USF CPT Replace Cooling Tower CT-5

Specifications

100% Construction Documents

USF PROJECT NO.: PD147018470102

AEI PROJECT NO.: 18182-00

August 27, 2018

AFFILIATED ENGINEERS INC. Tioga Town Center 12921 SW 1st Road, Suite 205 Newberry, FL 32669 Phone: (352) 376-5500

INTENTIONALLY BLANK PAGE UNIVERSITY OF SOUTH FLORIDA

CPT REPLACE COOLING TOWER CT-5

PREPARED BY

MECHANICAL ENGINEERING: SEAL By: ______Jack S. Neale P.E. No. 42678

ELECTRICAL ENGINEERING: SEAL By: ______Joshua Whitehead P.E. No. 68100

END OF LISTING

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Sign and Seal Page Date 08.27.2018 1

INTENTIONALLY BLANK PAGE TABLE OF CONTENTS

DIVISION 20 - MECHANICAL 20 0000 General Mechanical Requirements 20 0520 Excavation and Backfill

DIVISION 23 - HEATING VENTALATING AND AIR CONDITIONING 23 0514 Variable Frequency Motor Controllers 23 0594 Water Systems Test Adjust Balance 23 0901 Control Systems 23 2116 Pipe and Pipe Fittings 23 2118 Valves 23 2120 Piping Specialties 23 2123 Pumps 23 2514 Chemical Treatment Systems 23 6000 Primary Cooling Equipment

DIVISION 26 - ELECTRICAL 26 0000 General Electrical Requirements 26 0519 Conductors and Connectors 26 0526 Grounding and Bonding for Electrical Systems 26 0529 Supporting Devices 26 0533 Raceways and Fittings 26 0553 Electrical Identification 26 2200 Low-Voltage Transformers 26 2416 Panelboards 26 2416.16 Distribution Panelboards 26 2816 Enclosed Switches and Circuit Breakers 26 4313 Surge Protective Devices (SPD'S) for Low-Voltage Electrical Power Circuits

END OF TABLE OF CONTENTS

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Table of Contents Date 08.27.2018 1

INTENTIONALLY BLANK PAGE SECTION 20 0000 GENERAL MECHANICAL REQUIREMENTS

GENERAL

1.1 RELATED WORK

1.2 DESCRIPTION

A. Intent of drawings and Specifications is to obtain complete systems, tested, adjusted, and ready for operation.

B. Except as otherwise defined in greater detail, the terms "provide", "furnish" and "install" as used in Division 20 and 23 Contract Documents shall have the following meanings: 1. "Provide" or "provided" shall mean "furnish and install". 2. "Furnish" or "furnished" does not include installation. 3. "Install" or "installed" does not include furnishing.

C. Include incidental details not usually shown or specified, but necessary for proper installation and operation.

D. Check, verify and coordinate work with drawings and specifications prepared for other trades. Include modifications, relocations or adjustments necessary to complete work or to avoid interference with other trades.

E. Information given herein and on drawings is as exact as could be secured but is not guaranteed. Do not scale drawings for exact dimensions.

F. Where Architectural features govern location of work, refer to architectural drawings.

G. Contractor may install additional piping, fittings and valves, not shown on drawings, for testing purposes or for convenience of installation. Where such materials are installed, they shall comply with specifications and shall be sized to be compatible with system design. Remove such installed materials when they interfere with design conditions or as directed by Architect.

1.3 RELATED WORK

A. Utility Services: 1. Determine utility connection requirements and include in Base Bid all costs to Owner for utility service. 2. Include costs for temporary service, temporary routing of piping or any other requirements of a temporary nature associated with utility service.

B. Temporary Services: 1. Division 01 - Temporary Facilities and Controls.

C. Continuity of Service: 1. No service shall be interrupted or changed without permission from Architect and Owner. Obtain written permission before any work is started. 2. When interruption of services is required, Architect, Owner, and other concerned parties shall be notified and shall determine a time.

D. Demolition: 1. Division 02 - Selective Demolition.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents General Mechanical Requirements Date 08.27.2018 20 0000- 1 2. Perform demolition as required to accomplish new work. 3. Accomplish work in neat workmanlike manner to minimize interference, annoyance or inconvenience such work might impose on Owner or other Contractors. 4. Unless otherwise noted, remove from premises materials and equipment removed in demolition work. 5. Equipment noted to be removed and turned over to Owner, shall be delivered to Owner at place and time Owner designates. 6. Where materials are to be turned over to Owner or reused and installed by Contractor, it shall be Contractor's responsibility to maintain condition of materials and equipment equal to that existing before work began. Repair or replace damaged materials or equipment at no additional cost to Owner. 7. Where demolition work interferes with Owner's use of premises, schedule work through Architect, Owner and with other Contractors to minimize inconvenience to Owner. Architect must approve schedule before Contractor begins such Work.

E. Concrete Work: 1. Provide cast-in-place concrete as required by Contract Documents unless otherwise noted. 2. Provide anchor bolts, metal shapes and templates required to be cast in concrete or used to form concrete for support of mechanical equipment.

1.4 REQUIREMENTS OF REGULATORY AGENCIES

A. Rules and regulations of Federal, State and Local Authorities and utility companies, in force at time of execution of Contract shall become part of this specification.

1.5 REFERENCE STANDARDS

A. Agencies or publications referenced herein refer to the following: 1. AGA American Gas Association 2. AMCA Air Movement and Control Association 3. ANSI American National Standards Institute 4. AHRI Air-Conditioning, Heating and Refrigeration Institute 5. ASHRAE American Society of Heating Refrigerating and Air Conditioning Engineers 6. ASPE American Society of Plumbing Engineers 7. ASSE American Society of Sanitary Engineering 8. AWS American Welding Society 9. AWWA American Water Works Association 10. ASME American Society of Mechanical Engineers 11. ASTM American Society for Testing and Materials 12. CDA Copper Development Association 13. CISPI Cast Iron Soil Pipe Institute 14. FMG FM Global 15. FS Federal Specifications 16. IEEE Institute of Electrical and Electronics Engineers 17. MCA Mechanical Contractors Association 18. MSS Manufacturers Standardization Society 19. NEC National Electrical Code 20. NEMA National Electrical Manufacturers Association 21. NFPA National Fire Protection Association 22. NIST National Institute of Standards & Technology 23. NSF National Sanitation Foundation

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents General Mechanical Requirements Date 08.27.2018 20 0000- 2 24. NSPI National Spa and Pool Institute 25. OSHA Occupational Safety and Health Administration 26. PDI Plumbing and Drainage Institute 27. SMACNA Sheet Metal and Air Conditioning Contractors National Association 28. UL Underwriters Laboratories, Inc. 29. WQA Water Quality Association

B. Work shall be in accordance with latest edition of codes, standards or specifications unless noted otherwise.

1.6 SUBMITTALS

A. Shop Drawings (Product Data): 1. Refer to Division 01 - Submittal Procedures. 2. Note that for satisfying submittal requirements for Divisions 20, 21, 22 or 23, "Product Data" is usually more appropriate than true "Shop Drawings" as defined in Division 01. However, the expression "Shop Drawings" is generally used throughout Specification. 3. Submit shop drawings for equipment and systems as requested in the respective specification sections. Submittals that are not requested may not be reviewed. 4. Specifically mark general catalog sheets and drawings to indicate specific items submitted and its correlation to specific designation for product in drawings. 5. Specifically indicate proper identification of equipment by name and/or number, as indicated in specification and shown on drawings. 6. When manufacturer's reference numbers are different from those specified, provide correct cross-reference numbers for each item. Clearly mark and note submittals accordingly. 7. Submit complete record of required components when fixtures, equipment and items specified include accessories, parts and additional items under one designation. 8. Include composite wiring diagrams for electrically powered equipment and devices. 9. Submit equipment room layouts drawn to scale, including equipment, piping, accessories and clearance for maintenance. 10. Where submittals cover products containing non-metallic materials, include "Material Safety Data Sheet" (MSDS) from manufacturer stating physical and chemical properties of components and precautionary considerations required. 11. Submit shop drawings or product data as soon as practicable after signing contracts. Submittals must be approved before installation of materials and equipment. 12. Submittals that are not complete, not permanent or not properly checked by Contractor will be returned without review.

B. Certificates and Inspections: 1. Obtain and pay for inspections required by authorities having jurisdiction and deliver certificates approving installations to Owner unless otherwise directed.

C. Operation and Maintenance Manuals: 1. Refer to Division 01 - Operation and Maintenance Data. 2. Upon completion of Work but before final acceptance of system, submit to Architect for approval, 3 copies of operation and maintenance manuals in loose-leaf binders. If "one copy" is larger than 2" thick or consists of multiple volumes, submit only one set initially for review. After securing approval, submit 3 copies to Owner. 3. Organize manuals by specification section number and furnish table of contents and tabs for each piece of equipment or system. 4. Fire protection system shall be separately bound. 5. Manuals shall include the following:

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents General Mechanical Requirements Date 08.27.2018 20 0000- 3 a. Copies of Shop Drawings b. Manufacturer's operating and maintenance instructions. Include parts lists of items or equipment, with component exploded views and part numbers. Where manufacturer's data includes several types or models, designate applicable type or model. c. CD ROM's of O&M data with exploded parts lists where available d. Phone numbers and addresses of local parts suppliers and service companies e. Internet/WEB page addresses where applicable f. Wiring diagrams g. Startup and shutdown procedures h. Composite electrical diagrams i. Flow diagrams j. Lubrication instructions k. Factory and field test records (Refer to Test and Balancing in Part 3 of this section.) l. Air and water balance reports m. Valve identification charts as specified in Section 20 0553 - Mechanical System Identification n. Access panel identification charts as specified in Section 20 0553 - Mechanical System Identification o. Additional information, diagrams or explanations as designated under respective equipment or systems specification sections. 6. Instruct Owner's representative in operation and maintenance of equipment. Instruction shall include complete operating cycle on all apparatus. 7. Furnish O&M Manuals and instructions to Owner prior to request for final payment.

D. Record Documents: 1. Refer to General Conditions of Contract, and Division 01 - Project Record Documents. Prepare complete set of record drawings in accordance with Division 01. 2. Use designated set of prints of Contract Documents as prepared by Architect to mark-up for record drawing purposes.

1.7 JOB CONDITIONS

A. Building Access: 1. Arrange for necessary openings in building to allow for admittance of all apparatus.

B. Electrical Coordination: 1. Contractors for Divisions 20 and 23 shall provide the following items as specified under their respective Division(s) (Division 20 and 23): a. Motors b. Electrically powered equipment c. Electrically controlled equipment d. Starters, where specified e. Variable frequency drives, where specified f. Control devices, where specified g. Temperature Control wiring h. Wiring diagrams to Electrical Contractor for apparatus indicating external connection and internal controls. i. Disconnect devices furnished with units (VFDs, chillers, prepackaged control devices, etc.)

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents General Mechanical Requirements Date 08.27.2018 20 0000- 4 1). Devices shall have an interrupting rating not less than that of the upstream overcurrent device as shown on electrical drawings. 2). Equipment electrical connection points shall be labeled with listed electrical short circuit current rating (SCCR). SCCR shall not be less than interrupting rating of upstream overcurrent device as shown on electrical drawings. SCCR shall be marked on equipment control enclosure in accordance with UL508, or other acceptable, accredited third-party testing agency standards. 2. Electrical Contractor will provide the following devices required for control of motors or electrical equipment, unless noted otherwise. a. Starters b. Disconnect devices c. Control devices: 1). Pushbuttons 2). Pilot lights 3). Contacts d. Conduit, boxes and wiring for power wiring. e. Conduit, boxes and wiring for control wiring, except temperature control wiring. 3. Electrical Contractor will make connections, from power source to starter or variable frequency drive and from starter or variable frequency drive, where specified, to motor. 4. Where starters or other similar control devices are furnished by this contractor, they shall be installed by this contractor and wired by Electrical Contractor. 5. Should any change in size, kW(hp) rating, voltage, or means of control be made to any motor or other electrical equipment after Contracts are awarded, this contractor shall immediately notify Electrical Contractor of change. Additional costs due to these changes shall be responsibility of this contractor.

C. Cutting and Patching: 1. Refer to General Conditions of the Contract, and Division 01 - Cutting and Patching. 2. Perform cutting and patching required for complete installation of systems, unless otherwise noted. Patch and restore work cut or damaged to original condition. This includes openings remaining from removal or relocation of existing system components. 3. Provide materials required for patching unless otherwise noted. 4. Do not pierce beams or columns without permission of Architect and then only as directed. If openings are required through walls or floors where no sleeve has been provided, hole shall be core drilled to avoid unnecessary damage and structural weakening. 5. Where alterations disturb lawns, paving, walks, etc., replace, repair or refinish surfaces to condition existing prior to commencement of work. This may include areas beyond construction limits.

D. Housekeeping and Cleanup: 1. Refer to Division 01 - Closeout Procedures. 2. As work progresses and/or as directed by Architect, periodically remove waste materials from building and leave area of work broom clean. Upon completion of Work, remove tools, scaffolding, broken and waste materials, etc., from site.

1.8 WARRANTY

A. Refer to Division 01 for general warranty requirements.

B. Refer to technical sections for warranty requirement for each system. 1. Where no warranty requirements are called out, warrant equipment, materials, and workmanship to be free from defect for 1 year after acceptance by Owner.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents General Mechanical Requirements Date 08.27.2018 20 0000- 5 C. Warrant that systems will operate without objectionable noise, vibration and uncontrolled expansion.

D. Repair, replace or alter systems or parts of systems found defective at no extra cost to Owner.

E. In any case, wherein fulfilling requirements of any warranty, if this contractor disturbs any work warranted under another contract, this contractor shall restore such disturbed work to condition satisfactory to Architect and warranty such restored work to same extent as it was warranted under such other contract.

F. Warranty shall include labor, materials, and travel time.

PRODUCTS

2.1 PRODUCT SUBSTITUTIONS

A. Refer to Division 01 - Product Requirements.

EXECUTION

3.1 GENERAL

A. Verify elevations and dimensions prior to installation of materials.

3.2 DELIVERY, STORAGE, HANDLING, AND PROTECTION

A. Deliver products to the site under provisions of Division 01.

B. Store and protect products under provisions of Division 01.

C. Store in clean, dry space.

D. Maintain factory wrapping or provide cover to protect units from dirt, water, construction debris, and traffic.

E. Handle in accordance with manufacturer’s written instructions.

F. Handle carefully to avoid damage to components, enclosure, and finish. Lift only with lugs provided for the purpose.

G. Protect openings in equipment until connected to system to prevent entry of foreign materials.

3.3 EXCAVATION AND BACKFILL

A. Provide excavation and backfill for underground work unless otherwise indicated. Blasting is not allowed on this project without written permission of Architect and Owner.

B. Backfill trenches beneath concrete floor and stair slabs within building and beneath concrete slabs, walks, stairs and drives at exterior of building with gravel fill and compact to same density as surrounding area.

3.4 EQUIPMENT SHUTOFF VALVES

A. Provide shutoff valves at equipment connected to piping system. Refer to valve section or system section for requirements of valve type.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents General Mechanical Requirements Date 08.27.2018 20 0000- 6 3.5 EQUIPMENT ACCESS

A. Install piping, conduit and accessories to permit access to equipment for maintenance. Relocate piping, equipment or accessories to provide access at no additional cost to Owner.

B. Install equipment with sufficient maintenance space for removal, repair or changes to equipment. Provide ready accessibility to equipment without moving other future or installed equipment or system components.

3.6 EQUIPMENT SUPPORTS

A. Provide supporting steel not indicated on drawings as required for installation of equipment and materials including angles, channels, beams, hangers, etc.

3.7 EQUIPMENT GUARDS

A. Provide equipment guards over belt driven assemblies, pump shafts, exposed fans, and elsewhere as indicated in this Specification or required by Code.

B. Paint equipment guards bright yellow.

C. Equipment guards shall comply with OSHA requirements.

3.8 TEST AND BALANCING

A. Tests for equipment, ductwork and piping systems shall be performed as specified in their respective specification sections in accordance with technical requirements noted.

B. Provide equipment required for testing, including fittings for additional openings required for test apparatus.

C. All ductwork and piping inspections and testing shall be successfully completed and approved before application of covering materials.

D. When equipment or systems fail to meet minimum test requirements, replace or repair defective work or material as necessary and repeat inspection and test until equipment or systems meet test requirements. Make repairs with new materials. Caulking of holes or threaded joints is not allowed.

E. Contractor is responsible for certifying in writing equipment and system test results. Certification shall include identification of portion of system tested, date, time, test criteria, test medium and pressure used, duration of test and name and title of person signing test certification document.

F. Maintain copies of certified test results, including those for any failed tests, at project site. At completion of project, include copies of test records and certifications in O&M Manuals.

G. Balancing of various systems shall be in accordance with associated specification sections in addition to requirements noted herein.

3.9 START-UP

A. Systems and equipment shall be started, tested, adjusted and turned over to Owner ready for operation. This includes "Owner-Furnished, Contractor-Installed" (OFCI) and "Contractor- Furnished, Contractor-Installed" (CFCI) systems and equipment.

B. Follow manufacturer's pre-start-up check-out, start-up, trouble shooting and adjustment procedures.

C. Contractor shall provide services of technician/mechanic knowledgeable in start-up and check- out of types of systems and equipment on project.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents General Mechanical Requirements Date 08.27.2018 20 0000- 7 D. Provide start-up services by manufacturer's representative where specified or where Contractor does not have qualified personnel.

E. Coordinate start-up with all trades.

3.10 LUBRICATION

A. Upon completion of work and before turning over to Owner, clean and lubricate bearings except sealed and permanently lubricated bearings. Use only lubricant recommended by manufacturer.

B. Contractor is responsible for maintaining lubrication of mechanical equipment under this Contract until Work is accepted by Owner.

3.11 CLEANING

A. Clean systems after installation is complete.

B. Clean piping and ductwork both internally and externally to remove dirt, plaster dust or other foreign materials. When external surfaces of piping are rusted, clean and restore surface to original condition.

C. Clean pipeline strainers to restore them to original condition or replace with new strainer elements.

D. Clean equipment and plumbing fixtures as recommended by manufacturers.

E. Replace throwaway or replaceable media air filters used during construction period with new filters or new filter media after construction has been completed and before building is turned over to Owner. Filter replacement shall be as hereinafter specified.

F. Blow and clean dirt, plaster dust and other foreign matter from coils, terminal devices, diffusers, registers and grilles.

G. Thoroughly clean equipment of stains, paint spots, dirt and dust. Remove temporary labels not used for instruction or operation.

H. Provide additional cleaning of individual piping systems and apparatus as hereinafter specified.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents General Mechanical Requirements Date 08.27.2018 20 0000- 8 SECTION 20 0520 EXCAVATION AND BACKFILL

GENERAL

1.1 SUMMARY

A. This Section includes the following: 1. Excavating, trenching, backfilling, and compacting for utilities.

B. Related Sections include the following: 1. Division 20-23 Sections for installing underground mechanical utilities. 2. Division 26 Sections for installing underground electrical utilities.

1.2 DEFINITIONS

A. Backfill: Soil material or controlled low-strength material used to fill an excavation. 1. Initial Backfill: Backfill placed beside and over conduit or pipe in a trench, including haunches to support sides of conduit or pipe. 2. Final Backfill: Backfill placed over initial backfill to fill a trench.

B. Bedding Course: Course placed over the excavated subgrade in a trench before laying conduit or pipe.

C. Excavation: Removal of material encountered above subgrade elevations and to lines and dimensions indicated. 1. Unauthorized Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions without direction by Owner. Unauthorized excavation, as well as remedial work directed by Owner, shall be without additional compensation.

D. Structures: Buildings, footings, foundations, retaining walls, slabs, tanks, curbs, mechanical and electrical appurtenances, or other man-made stationary features constructed above or below the ground surface.

E. Subgrade: Surface or elevation remaining after completing excavation, or top surface of a fill or backfill immediately below subbase, drainage fill, or topsoil materials.

F. Utilities: On-site underground pipes, conduits, ducts, and cables, as well as underground services within buildings.

1.3 PROJECT CONDITIONS

A. Existing Utilities: Do not interrupt utilities serving facilities occupied by Owner or others unless permitted in writing by Owner and then only after arranging to provide temporary utility services according to requirements indicated. 1. Notify Owner not less than two days in advance of proposed utility interruptions. 2. Do not proceed with utility interruptions without Owner’s written permission. 3. Contact utility-locator service for area where Project is located before excavating.

B. Demolish and completely remove from site existing underground utilities indicated to be removed. Coordinate with utility companies to shut off services if lines are active.

PRODUCTS

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Excavation and Backfill Date 08.27.2018 20 0520- 1 2.1 SOIL MATERIALS

A. Satisfactory Soils: ASTM D 2487 Soil Classification Groups GW, GP, GM, SW, SP, and SM, or a combination of these groups; free of rock or gravel larger than 1.5-inches in any dimension, debris, waste, vegetation, and other deleterious matter.

B. Unsatisfactory Soils: Soil Classification Groups GC, SC, CL, ML, OL, CH, MH, OH, and PT according to ASTM D 2487, or a combination of these groups. 1. Unsatisfactory soils also include satisfactory soils not maintained within 2 percent of optimum moisture content at time of compaction.

C. Bedding Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; except with 100 percent passing a 1-inch sieve and not more than 8 percent passing a No. 200 sieve.

D. Sand: ASTM C 33; fine aggregate, natural, or manufactured sand. Sand shall be mortar grade.

E. Sand and gravel shall be clean; all backfill products shall be free from foreign matter.

EXECUTION

3.1 PREPARATION

A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earthwork operations.

B. Preparation of subgrade for earthwork operations including removal of vegetation, topsoil, debris, obstructions, and deleterious materials from ground surface.

C. Protect and maintain erosion and sedimentation controls, which are specified in Section 02500 Sitework for Utilities, during earthwork operations.

D. Strip existing sod from area to be trenched including area required for machinery operation during trenching and dispose of off the Owner’s property.

E. Strip suitable topsoil from area to be trenched and stockpile separately from other excavated soil materials.

F. Establish grade lines and locations of roadways and sidewalks. Provide necessary stakes and batterboards.

G. Verify elevations of existing utilities prior to excavation for new conduits.

3.2 DEWATERING

A. Prevent surface water and ground water from entering excavations.

B. Protect subgrades from softening, undermining, washout, and damage by rain or water accumulation. 1. Reroute surface water runoff away from excavated areas. Do not allow water to accumulate in excavations. Do not use excavated trenches as temporary drainage ditches.

3.3 EXPLOSIVES

A. Explosives: Do not use explosives.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Excavation and Backfill Date 08.27.2018 20 0520- 2 3.4 EXCAVATION, GENERAL

A. Provide excavation for underground work, including conduit penetrations, unless otherwise shown or specified. Intent is to lay conduit in open trench except when tunneling or directional boring is authorized.

B. Unclassified Excavation: Excavate to subgrade elevations regardless of the character of surface and subsurface conditions encountered. Unclassified excavated materials may include rock, soil materials, and obstructions. No changes in the Contract Sum or the Contract Time will be authorized for rock excavation or removal of obstructions. 1. If excavated materials intended for fill and backfill include unsatisfactory soil materials and rock, replace with satisfactory soil materials. 2. Remove rock to lines and grades indicated to permit installation of permanent construction without exceeding the following dimensions: a. 6 inches beneath pipe in trenches, and 12 inches wider than conduit or matching trench width.

C. Include necessary work such as sheet piling; shoring; underpinning; pumping; bailing, and transportation.

3.5 EXCAVATION FOR UTILITY TRENCHES

A. Excavate trenches to indicated gradients, lines, depths, and elevations.

B. Excavate trenches to uniform widths to provide the following clearance on each side of pipe or conduit. Excavate trench walls vertically from trench bottom to 12 inches higher than top of pipe or conduit, unless otherwise indicated. 1. Clearance: 12 inches each side of conduit.

C. Trench Bottoms: Excavate and shape trench bottoms to provide uniform bearing and support of pipes and conduit. Shape subgrade to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits. Remove projecting stones and sharp objects along trench subgrade. 1. For conduit less than 6 inches in nominal diameter and flat-bottomed, multiple-duct conduit units, hand-excavate trench bottoms and support pipe and conduit on an undisturbed subgrade. 2. For pipes and conduit 6 inches or larger in nominal diameter, shape bottom of trench to support bottom 90 degrees of pipe circumference. Fill depressions with tamped sand backfill. 3. Excavate trenches 6 inches deeper than elevation required in rock or other unyielding bearing material to allow for bedding course.

3.6 SUBGRADE INSPECTION

A. Notify Owner when excavations have reached required subgrade.

B. If Owner determines that unsatisfactory soil is present, continue excavation and replace with compacted backfill or fill material as directed.

C. Authorized additional excavation and replacement material will be paid for according to Contract provisions for changes in the Work.

D. Reconstruct subgrades damaged by rain, accumulated water, or construction activities, as directed by Owner, without additional compensation.

3.7 UNAUTHORIZED EXCAVATION

A. Fill unauthorized excavations under other construction or utility pipe as directed by Owner.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Excavation and Backfill Date 08.27.2018 20 0520- 3 3.8 STORAGE OF SOIL MATERIALS

A. Stockpile soil materials and excavated satisfactory soil materials without intermixing. Place, grade, and shape stockpiles to drain surface water. Cover to prevent windblown dust. 1. Stockpile soil materials away from edge of excavations. Do not store within drip line of remaining trees.

3.9 INSTALLATION

A. Keep underground conduit to proper line and grade and sealed to prevent entrance of animals or foreign matter.

B. Provide bracing and sheet piling as necessary to support trenches. Remove water to fully protect workers and adjacent structures to permit proper installation of conduit. Comply with local regulations, applicable provisions of OSHA regulations on trenching, or with provisions of "Manual of Accident Prevention in Construction" published by Associated General Contractors of America. Under no circumstances lay conduit in water. Keep trench free from water until conduit joint material has hardened and, if applicable, concrete encasement is in place. Presence of ground water in soil or necessity of sheet piling or bracing trenches shall not constitute condition for which any increase may be made in Contract price, except when sheet piling is left in place, on written order of Owner, Contract price shall be adjusted.

C. Cut off sheet piling left in place not less than 2 ft below new finished grade. Do not remove sheet piling until trench is substantially backfilled.

D. Place underground conduit on 4" compacted bedding course. Shape bedding for clearance for joints and fittings, tamped in place and graded evenly to ensure uniform bearing for the full length of conduit. Do not support conduit by blocking, planking, or mounding of bedding material. Bedding shall be installed to prevent beam failure of conduit and piping.

E. Install lines passing under foundations with minimum of 1-1/2" clearance to concrete and ensure there is no disturbance of bearing soil.

3.10 BACKFILL

A. All trenches and similar excavations shall be filled, compacted, and permanently resurfaced within, and not to exceed, 72 hours of completion of all work, testing, and inspections, unless exception is made by Owner.

B. Place backfill on subgrades free of mud.

C. Place and compact bedding course on trench bottoms and where indicated. Shape bedding course to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits.

D. Provide 4-inch- thick, concrete-base slab support for piping or conduit less than 30 inches below surface of roadways. After installing and testing, completely encase piping or conduit in a minimum of 4 inches of concrete before backfilling or placing roadway subbase.

E. Place and compact initial backfill of satisfactory soil, free of particles larger than 1 inch in any dimension, to a height of 12 inches over the utility pipe or conduit. 1. Carefully compact initial backfill under pipe haunches and compact evenly up on both sides and along the full length of utility conduit to avoid damage or displacement of conduit. Coordinate backfilling with utilities testing.

F. Backfill voids with satisfactory soil while installing and removing shoring and bracing.

G. Place and compact final backfill of satisfactory soil to final subgrade elevation.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Excavation and Backfill Date 08.27.2018 20 0520- 4 H. Install warning tape in accordance with drawing details and specifications.

3.11 SOIL MOISTURE CONTROL

A. Uniformly moisten or aerate subgrade and each subsequent fill or backfill soil layer before compaction to within 2 percent of optimum moisture content. 1. Do not place backfill or fill soil material on surfaces that are muddy. 2. Remove and replace, or scarify and air dry otherwise satisfactory soil material that exceeds optimum moisture content by 2 percent and is too wet to compact to specified dry unit weight.

3.12 COMPACTION OF SOIL BACKFILLS AND FILLS

A. Place backfill and fill soil materials in layers not more than 4 inches in loose depth for material compacted by hand-operated tampers.

B. Compact soil materials to not less than the following percentages of maximum dry unit weight according to ASTM D 1557: 1. For utility trenches, compact each layer of initial and final backfill soil material at 85 percent to subgrade line for topsoil.

3.13 GRADING

A. General: Uniformly grade areas to a smooth surface, free of irregular surface changes. Comply with compaction requirements and grade to cross sections, lines, and elevations indicated. 1. Provide a smooth transition between adjacent existing grades and new grades. 2. Cut out soft spots, fill low spots, and trim high spots to comply with required surface tolerances. 3. Site Grading: Slope grades to direct water away from trenches and to prevent ponding.

B. On completion of trenching and backfilling operations, restore grades to original elevation or to new subgrade elevation. When trenching is through existing areas or beyond constructions limits, replace surfaces to existing conditions.

C. Install lines passing under foundations with minimum of 1-1/2" clearance to concrete and ensure there is no disturbance of bearing soil.

3.14 FIELD QUALITY CONTROL

A. Testing Agency: Owner will engage a qualified independent geotechnical testing agency to perform field quality-control testing.

B. Coordinate and cooperate with Owner’s testing agency to facilitate field quality-control testing.

C. Allow testing agency to inspect and test subgrades and each fill or backfill layer. Proceed with subsequent earthwork only after test results for previously completed work comply with requirements.

D. Testing agency will test compaction of soils in place according to ASTM D 1556, ASTM D 2167, ASTM D 2922, and ASTM D 2937, as applicable. Tests will be performed at the following locations and frequencies: 1. Trench Backfill: At each compacted initial and final backfill layer, at least 1 test for each 150 feet or less of trench length, but no fewer than 2 tests.

E. When testing agency reports that subgrades, fills, or backfills have not achieved degree of compaction, remove and replace soil to depth required; recompact and retest until specified compaction is obtained.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Excavation and Backfill Date 08.27.2018 20 0520- 5 3.15 PROTECTION

A. PROTECTING GRADED AREAS: PROTECT NEWLY GRADED AREAS FROM TRAFFIC AND EROSION. KEEP FREE OF trash and debris.

B. Repair and reestablish grades to specified tolerances where completed or partially completed surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent construction operations or weather conditions. 1. Scarify or remove and replace soil material to depth as directed by Owner; reshape and recompact.

C. Where settling occurs before Project correction period elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing. 1. Restore appearance, quality, and condition of finished surfacing to match adjacent work, and eliminate evidence of restoration to greatest extent possible.

3.16 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Disposal: Remove surplus satisfactory soil and waste material, including unsatisfactory soil, trash, and debris, and legally dispose of it off Owner's property.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Excavation and Backfill Date 08.27.2018 20 0520- 6 SECTION 23 0514

VARIABLE FREQUENCY MOTOR CONTROLLERS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following: 1. VFDs for the 350hp vertical turbine pumps, only. 2. Cooling tower fan VFDs are not included in this section, but are specified in 23 6000 and are provided by the cooling tower manufacturer. 3. VFDs will be installed in NEMA 4X air-conditioned enclosures provided under Specification 260533.

B. Related Sections include the following: 1. Section 23 0594 - Water Systems Test Adjust Balance 2. Section 25 0901 - Control Systems 3. Section 26 0533 - Raceways and Boxes for Electrical Systems

1.2 SYSTEM DESCRIPTION

A. Provide Variable Frequency Drives (VFD) for each pump sized to accommodate motors shown on drawings or schedules. All VFD's shall be from same manufacturer.

B. VFD manufacturer shall review driven equipment and motors for VFD compatibility. Submit written statement from manufacturer of driven equipment along with VFD shop drawing submittals, indicating verification of compatibility.

C. Contractor shall verify distance from motors to VFD's. VFD manufacturer shall provide sufficient equipment to assure proper operation and to avoid premature motor failure.

D. VFD manufacturer shall provide filter equipment as necessary to limit voltage transient ring wave stress placed on stator windings to withstand rating value of motors supplied per Section 23 0513 - Common Motor Requirements for HVAC Equipment.

E. VFD shall vary speed of its respective fan motor in response to either 4-20 mA or 0-10 VDC control signal provided by Control Contractor.

F. VFD system shall consist of the following: 1. Variable frequency drive 2. UL listed disconnect device 3. Electrical noise attenuation device as required to meet electrical noise criteria 4. VFD system shall include motor space heater provisions.

1.3 QUALIFICATIONS

A. VFD system shall be furnished by a manufacturer with at least 5 years experience in design, construction and application of VFD.

1.4 SUBMITTALS

A. Shop drawings for each VFD system including, but not limited to, the following: 1. Manufacturer's name 2. Identification of system components

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Variable Frequency Motor Controllers Date 08.27.2018 Section 23 0514 - 1 3. Type of enclosure, front elevation and plan view, equipment weight, conduit access locations. 4. Capacities/ratings 5. Warranty 6. System wiring and block diagram showing system components 7. Performance, control and protection data with specified features clearly shown 8. Operating and monitoring devices with specified features clearly indicated 9. Start-up operation, maintenance, spare parts, and field tests 10. Manufacturer's installation instructions 11. Other appropriate data 12. Variations from this specification

B. Submit integration pointslist and coordinate requirements with Section 25 0901.

C. After quality assurance tests are complete, submit written certification that drive and components have passed factory quality assurance tests.

D. Submit calculations indicating conformance with electrical noise criteria specified. Refer to Electrical Documents for information regarding electrical building distribution system.

E. Submit product and performance data on electrical noise attenuation device if required to meet electrical noise criteria specified. Isolation transformer is not electrical noise attenuation device.

F. Submit printed list of settings for all items that require setting during startup or list of Factory Default Parameters.

1.5 HARMONIC CONTROL IN ELECTRICAL POWER SYSTEMS

A. Provide input line reactors for all VFDs.

B. Provide TCI HarmonicGuard Passive (HGP) filter for all VFDs

1.6 START-UP OPERATION AND MAINTENANCE DATA

A. Manufacturer shall provide services of factory trained engineer or technician to approve installation; start-up test and adjust for proper operation; and instruct and train Owner's representative in operation and maintenance of VFD systems.

B. Should drive be deficient, drive manufacturer shall be required to make changes necessary to bring units into compliance with specified performance requirements. Cost of changes and retest shall be borne by drive manufacturer.

C. Upon completion of this service, submit a report, signed by manufacturer's service representative, including start-up and test log.

D. Manufacturer shall include additional 1 year (total 2 years) warranty for VFD system, covering parts, labor and travel expenses.

PART 2 - PRODUCTS

2.1 VARIABLE FREQUENCY MOTOR CONTROLLERS

A. MANUFACTURERS 1. ABB, Yaskawa, or Danfoss. 2. Basis of Design: ABB.

B. HARMONIC MITIGATION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Variable Frequency Motor Controllers Date 08.27.2018 Section 23 0514 - 2 1. Drives 7-1/2 hp and larger shall incorporate one of the following harmonic mitigation features: a. Provide TCI HG7 filter for all VFDs

C. FABRICATION 1. VFD shall be variable torque, solid state, microprocessor based control, modular design for standard induction AC motor. 2. For units mounted indoors, VFD components shall be factory mounted and wired in NEMA 12 enclosure with lock. 3. Circuitry shall be plug-in, plug-out modular. Printed circuit boards shall have protective coating to reduce corrosion. 4. Unit shall conform to NEMA and NEC standards and be UL or ETL listed. Control circuitry shall be electrically isolated from power circuitry. Entire assembly panel shall have UL or equivalent panel sticker. 5. Inverter section shall be pulse width modulated (PWM) design and third generation insulated gate bipolar transistors (IGBTs).

D. PERFORMANCE REQUIREMENTS 1. Input: 460 (+ 10%, - 15%) VAC, 3-phase, 60 (± 2) Hz. 2. Output: 460 VAC, 3 phase, 10 to 60 Hz. 3. Operating Environment Conditions: Ambient 32°F to 104°F temperature, relative humidity up to 95% non-condensing. 4. Linear acceleration and deceleration adjustable from 5 to 60 seconds. Provide adjustable V/Hz ratio and low speed boost features. 5. Input harmonic distortion shall have true RMS (KW/RMSKVA) power factor greater than 90% at full load. 6. Output Current Rating: Continuous full load output current rating of drive shall not be less than that listed for motor of equivalent horsepower in NEC table 430-150. 7. Drive overload capacity to be minimum 110% of motor FLA based on NEC ratings for one minute. 8. Time to Shutdown: Inversely proportional to square of overload current (t = k/I2). 9. Motor Regeneration Protection: Unit shall have the capability of dissipating regeneration energy without damage to or shutdown of drive. Unit shall be capable of starting into rotating load. 10. Output Frequency Stability: ± 0.5% of base frequency in 24 hrs throughout range of rated operating conditions. 11. Output Voltage Regulation: ± 2% of maximum rated output voltage. 12. Output voltage rise time shall be no faster than 1000 V/micro second measured at the motor terminals. If power and control cable between VFD and motor is more than 100 ft, provide dv/dt output filter. 13. Power Loss Ride-Through: 3 cycles or 50 milliseconds. 14. Linearity (speed reference to output frequency): ± 1.0% 15. Input Power Factor: Minimum of 0.95 regardless of speed and load. 16. Minimum drive efficiency as percent of input power shall be as follows:

Frequency (Hz) Percent Load 60 50 30 15

100 97 96 95 90

E. CONTROL FEATURES 1. VFD speed control circuit shall accept either 4-20 mA DC or 0-10 VDC isolated ungrounded transmitter signal in automatic mode and from manual speed potentiometer in manual mode.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Variable Frequency Motor Controllers Date 08.27.2018 Section 23 0514 - 3 2. Provide adjustable minimum and maximum speed settings (0 - 100%) for both auto and manual mode. Initial minimum setting shall be 25%. 3. Provide adjustable automatic reset for fault trips, except short circuit type faults. After selected number of unsuccessful restart attempts, drive shall be shut down. Number of restart attempts and time interval between resets shall be selective. 4. When unit shuts down due to power outage, unit shall be capable of being restarted manually or automatically. 5. VFD shall be capable of starting into rotating loads spinning in any direction. 6. Provide critical frequency avoidance circuit with at least 3 field adjustable bands to avoid operation at speeds which cause excessive vibration in driven equipment. 7. Provide isolated ungrounded output signal to indicate drive percent of speed or drive frequency. 8. Provide control for automatically switching from VFD to by-pass line through adjustable time delay relay or equivalent protection whenever VFD shuts down automatically.

F. COORDINATION WITH BUILDING AUTOMATION SYSTEM (BAS) 1. Furnish each VFD with digital communication bus card for BAS use. Card shall communicate via BACnet MS/TP. 2. Provide contacts (1 NO and 1 NC contact) for remote control of start/stop function for VFD mode and second set for bypass mode if bypass is specified. 3. Provide contacts (1 NO and 1 NC contact) for remote indication of VFD fault condition. 4. Provide input from BAS for VFD speed control.

G. PROTECTION FEATURES 1. Power circuits shall be protected by electronic protection circuits. Electronic protection circuits shall provide orderly shutdown without blowing fuses and prevent component loss under the following abnormal conditions. a. Instantaneous overcurrent and over voltage trip of output. b. Solid state protective circuit shall provide NEC motor running overload protection tested in accordance with UL Standard 991. c. Power line overvoltage or undervoltage. d. Phase sequence detection or insensitivity to incoming power phase sequence. e. Single and 3 phase short circuit protection. f. Control circuit malfunction. g. Overtemperature. h. Ground fault for all 3 phases. 2. VFD shall protect itself from damage due to phase-to-phase or phase-to-ground faults without fuse blowing or use of isolation transformers. VFD’s, which require isolation transformers to provide ground fault protection, are not acceptable. 3. In addition, provide the following protection features. a. Input line-to-line and line-to-ground MOVs for transient protection up to 3000 volts. b. Control circuit transformer fusing. c. Grounded control chassis. d. Diagnostic indication. e. One set of spare fuses for each type used in drive for each VFD. 4. Interlock VFD control circuits with driven motor's disconnect switches where such motor disconnect switches are provided. Disconnecting on-line motor shall shut down VFD. VFD shall restart upon reconnection of motor. 5. VFD shall employ adjustable torque limit control, which shall override speed command and decrease frequency while maintaining correct volts/hertz ratio whenever load level surpasses VFD design level or set point.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Variable Frequency Motor Controllers Date 08.27.2018 Section 23 0514 - 4 H. OPERATING AND MONITORING DEVICES 1. The following functionality shall be provided and may be controlled via touchscreen/keypad: a. Door interlock to disconnect VFD input power. b. Manual stop/start device. c. Operating mode selector device marked "Manual-Off-Automatic". d. Manual speed control potentiometer. e. Power on indication. f. Drive run indication. g. Drive fault indication with testable feature. h. Fault reset device. 2. Speed indicating meter or digital indication (0 - 100%) calibrated in percent speed or frequency meter with 0 to 90 Hz scale to indicate motor speed. 3. Integral digital programming and operating display which shows Hz, Percent Output Current, Output Voltage, Percent Output Power, Operating Parameters and their values, and Diagnostic Fault Codes. In addition, Keypads shall be incorporated to facilitate digital programming of drive adjustments. Analog potentiometer adjustments are not acceptable. 4. Provision shall be included to provide selectable programming security by inhibiting program parameter changes with internal dip switch setting or with password security. 5. Control shall incorporate microprocessors for operator interface, diagnostics, and fault managements, and power management. 6. Optional DOS-based programming software, which includes provision for serial communication with drive, shall be available for shipment at time of equipment order placement. 7. Fault buffers to sequentially store last 4 faults. Parameter and fault information to be stored in non-volatile memory.

I. QUALITY ASSURANCE TESTS 1. Complete drive assembly shall be factory tested with actual AC induction motor, 100% load and temperature cycled within environment chamber at 104°F. Documentation of test shall be furnished to verify successful completion of test at Engineer's request.

J. DISCONNECT DEVICE 1. Provide integral switch to disconnect incoming electrical power to units. Disconnect device shall be UL listed device of the following: a. Motor circuit switch: horsepower rated. b. Enclosed molded case breaker; ampere rated and providing over current protection. c. Molded case switch; ampere rated enclosed switch with or without over current protection. d. Rotary switch: with or without fuse. 2. Unit shall have an interrupting rating not less than that of the upstream overcurrent device as shown on electrical drawings. 3. Disconnect shall be capable of being padlocked in OFF position and complying with OSHA requirements. Operating handle shall indicate whether switch is “ON” or “OFF”. 4. Switch shall have dual cover interlock to prevent unauthorized opening of switch door when handle is in “ON” position and to prevent closing of switch mechanism with door open. Provide defeater mechanism to defeat the interlock for user required access.

K. INPUT LINE REACTORS 1. Series line reactors shall be designed for harmonic filtering service and shall be UL component recognized. Construction shall be copper wire wound on steel cores. Inductors shall be 3- phase. Series line reactors shall be sized per harmonic analysis and appropriately for total connected load. Design maximum temperature rise for inductors shall be 115°C. 2. Inductors shall be air-gapped to avoid saturation. Inductance shall be measured under full load and shall be within ±5% of design value.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Variable Frequency Motor Controllers Date 08.27.2018 Section 23 0514 - 5 3. Line reactor shall be included integral to drive enclosure. a. Where mounting line reactor in VFD enclosure is not possible, enclosure shall be steel with enamel finish and no knockouts. Enclosure shall match construction of VFD enclosure and shall have hinged lockable cover. Screened openings shall be provided for enclosure ventilation. Enclosure shall be built with integral mounting brackets for platform or wall mounting. Coordinate location with other trades. Provide disconnect switch for line side filters. 4. Internal DC bus chokes are acceptable when providing equivalent performance to AC line reactors specified

L. PASSIVE HARMONIC FILTER 1. Tuned passive harmonic filter shall be designed to remove harmonics generated by a 6-pulse VFD in a power distribution system. The filter shall be designed to minimize the possibility of resonance and other system problems associated with power factor correction in the presence of harmonic distortion. 2. Inductive and capacitive elements shall be arranged in a series configuration and tuned to resonate just below the harmonic frequency for which it is designed to filter. The inductance internal to the filter combined with the series line reactor shall act to limit current surges between the capacitor and other plant electrical equipment, and shall minimize the possibility of equipment or capacitor damage due to such surges. 3. Capacitors shall be high-endurance cells with a voltage rating capable of handling the nominal system voltage plus 10% over voltage. Capacitors shall be contained in sealed metal cans. The RMS current in each capacitor cell at full load shall not exceed 150% of the current at no load to limit the stress on capacitors. 4. Both tuning inductors and series line reactors shall be designed for harmonic filtering service and for slowing the rate of rapid current changes. The core shall be made of laminated, magnetic steel. Windings shall consist of copper wire or copper foil. Completed inductors shall be impregnated using solid epoxy resin. 5. Filter shall be housed internal to drive enclosure. 6. Filter shall include contactor to disengage circuit capacitor if VFD is operating at 50% electrical power capacity or less. Set point shall be field programmable. Activation of contactor shall leave inductor in circuit for benefits of added circuit impedance. Relay required for this control shall be provided in VFD by VFD manufacturer.

PART 3 - EXECUTION

3.1 INSPECTION

A. Visually inspect equipment and components at time of delivery. Submit report to Engineer with list of items or deficiencies to be corrected.

3.2 PROTECTION

A. Until turned over to Owner, protect VFD cabinets from dust/dirt during storage, construction and operation. If VFDs are not furnished with internal air filter racks, provide temporary filter media to protect VFD cabinets and replace filter media as required. If VFDs are furnished with internal air filter racks, replace filter media with new prior to turning over VFD to Owner.

3.3 INSTALLATION

A. Install VFD system in accordance with details, approved shop drawings and manufacturer's instructions and recommendations.

B. Provide field low voltage wiring of VFD system components. Provide field interconnecting wiring between VFD and by-pass starter if bypass starter is specified and the wiring is not installed at

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Variable Frequency Motor Controllers Date 08.27.2018 Section 23 0514 - 6 factory. Install wiring in metal conduit and in accordance with Division 26 and applicable codes and standards.

C. Provide control wiring between interlocks in VFD control circuits and driven motor's disconnect switches, where such motor disconnect switches are provided.

D. Do not connect ground from one unit to another unit's cabinet.

E. Use separate conduits for incoming and outgoing power conductors from each unit.

F. Use separate conduit for control wiring for each unit. Control wiring shall not occupy same conduit as power wiring.

G. Use minimum 18 ga shielded wiring with ground for control wiring.

H. Install floor mounted drives, on minimum 3-1/2" high concrete housekeeping pad and minimum 3/4" thick neoprene pad similar to Mason Super W, 50 durometer.

3.4 START UP

A. Perform start-up of VFD in accordance with procedures as defined by manufacturer for proper operation.

B. Adjust critical frequency avoidance feature to step over frequencies which cause excessive vibration in driven equipment.

C. Adjust passive harmonic filter capacitor contactor setpoint to ensure drives do not present leading power factor to electrical systems during low-load conditions

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Variable Frequency Motor Controllers Date 08.27.2018 Section 23 0514 - 7

INTENTIONALLY BLANK PAGE SECTION 23 0594 WATER SYSTEMS TEST ADJUST BALANCE

GENERAL

1.1 REFERENCE

A. Work under this Section is subject to requirements of Contract Documents including General Conditions, Supplementary Conditions, and sections under Division 01 General Requirements.

1.2 DESCRIPTION

A. This Contractor shall be responsible for providing complete testing, adjusting and balancing (TAB) work of all HVAC hydronic systems including distribution systems and the equipment and apparatus connected.

B. Work required shall consist of setting volume (flow) and speed adjusting facilities provided or specified for systems, recording data, making tests and preparing reports, as hereinafter specified.

C. TAB work, shall be performed by separate, independent contractor who is certified by either National Environmental Balancing Bureau (NEBB), Associated Air Balance Council (AABC) or Testing, Adjusting and Balancing Bureau (TABB).

D. TAB work, may be performed by Mechanical Contractor with prior written approval by Architect/Engineer.

E. Upon direction of Architect/Engineer or TAB Contractor, Mechanical Contractor shall provide at no additional cost to Owner, any additional work and/or devices necessary to properly balance system, including calibrated balancing valves, gauge tapings, flow sensors, and thermometer wells. Mechanical Contractor shall also be responsible for trimming and balancing pump impellers as necessary to obtain design pump flow rates, or maximum pump efficiency.

1.3 PROCEDURES

A. Unless otherwise specified, test, adjust and balance water systems including all equipment, apparatus and distribution systems in accordance with the latest edition of NEBB, AABC or TABB Procedural Standards for Testing, Adjusting and Balancing of Environmental Systems.

1.4 INSTRUMENTS

A. Instruments used for measurements shall be accurate, and calibration histories for each instrument shall be available for examination. Calibration and maintenance of instruments shall be in accordance with requirements of NEBB, AABC or TABB.

B. Application of instruments and accuracy of measurements shall be in accordance with NEBB, AABC, or TABB Standards.

1.5 REPORTS

A. Submit 5 certified copies of Final Reports on applicable NEBB, AABC or TABB Reporting Forms for approval. Provide sortable electronic version as well as hard copy.

B. Each individual Final Report Form submitted, shall bear name of person who recorded data and seal of supervisor of TAB Contractor.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Water Systems Test Adjust Balance Date 08.27.2018 23 0594 - 1 C. Include identification of all types of instruments used and their latest dates of calibration with Final Reports.

D. Note any and all discrepancies in design flows on report forms.

E. Incomplete report forms will not be approved.

1.6 GUARANTEE

A. Guarantee that test, adjust and balance work be performed in accordance with standards and that water systems operate within plus or minus 10% of design flow rates as shown on plans and/or as scheduled.

PRODUCTS

2.1 (NOT APPLICABLE TO THIS SECTION)

EXECUTION

3.1 GENERAL

A. Test, adjust and balance water systems and associated components in accordance with procedures outlined in Standards.

B. Upon completion of TAB work, mark equipment settings, including valve indicators, and similar devices to indicate final settings in approved manner.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Water Systems Test Adjust Balance Date 08.27.2018 23 0594 - 2 SECTION 23 0901 CONTROL SYSTEMS

GENERAL

1.1 RELATED WORK

A. Section 23 2118 - Valves

B. Section 26 0519 - Low-Voltage Electrical Power Conductors and Cables

C. Section 26 0533 - Raceway and Boxes for Electrical Systems

D. Control Sequences: Refer to Drawings

1.2 DEFINITIONS

A. The following abbreviations, acronyms, and definitions are used in addition to those details found elsewhere in contract documents. 1. Actuator: Control device to provide motion of valve or damper in response to control signal 2. AI: Analog Input 3. AO: Analog Output 4. Analog: Continuously variable state over stated range of values 5. Auto-Tune: Software routine used to adjust tuning parameters based on historical data 6. BAS: Building Automation System 7. BMS Building Management System 8. DDC: Direct Digital Control 9. DDCP: Direct Digital Control Panel 10. Discrete: Binary or digital state 11. DI: Discrete Input (Sometimes referred to as Binary Input BI) 12. DO: Discrete Output (Sometimes referred to as Binary Output BO) 13. E/P: Voltage to pneumatic transducer (Often a solenoid valve is referred to as an E/P transducer) 14. FA Field Adjustable 15. FC: Fail Closed position of control device or actuator. Device moves to closed position on loss of control signal or energy source 16. FMS: Facility Management System linking two or more BAS 17. FO: Fail Open position of control device or actuator. Device moves to open position on loss of control signal or energy source 18. Instrument: Device used for sensing input parameters or used for actuation 19. Modulating: Movement of a control device through an entire range of values proportional to an infinitely variable input value 20. Motorized: Control device with actuator 21. NC: Normally Closed position of switch after control signal is removed 22. NO: Normally Open position of switch after control signal is removed 23. Node: DDCP, operator workstation, or other control device connected to communication's network 24. Operator: Same as actuator for motorized devices. Also refers to an individual who physically “operates” the facility

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 1 25. PC: Personal Computer 26. Peer-to-Peer: Mode of communication between controllers in which each device connected to network has equal status and each shares its database values with all other devices connected to network. 27. P: Proportional control, control mode with continuous linear relationship between observed input signal and final controlled output element. 28. PI: Proportional - Integral control, control mode with continuous proportional output plus additional change in output based on both amount and duration of change in controlled variable (Reset control). 29. PID: Proportional - Integral - Derivative control, control mode with continuous correction of final controlled output element versus input signal based on proportional error, its time history (reset), and rate at which its changing (derivative). 30. Point: Analog or discrete instrument with addressable database value 31. Self-Tune: Same as Auto-Tunesole 32. TCC: Temperature Control Contractor (Same as Control Contractor). 33. TCP: Temperature Control Panel

1.3 ACCEPTABLE CONTROL CONTRACTORS

A. Control Contractor shall have full service office within 100 miles of Project site. Full service office is defined as having complete parts inventory, having all required test and diagnostic equipment, and to be home office of Applications Engineers, Supervisors, and Field Technicians. Control Contractors shall be factory authorized agent or dealer of controllers and control hardware as manufactured by: 1. Trane Company 2. Alerton Technologies 3. KMC Controls

1.4 SYSTEMS DESCRIPTION

A. System shall be electric and/or electronic.

B. Control system shall be Direct Digital Control (DDC).

C. Valve actuators shall be electric type.

D. Provide modular designed stand-alone DDCP capable of future BAS architecture with low/medium speed communication networks. Upgrade to full BAS architecture shall not require removal of existing DDCP, sensors, actuators, etc.

1.5 SCOPE OF WORK

A. Provide all labor and materials for complete and fully functioning control systems in accordance with Contract Documents including this Section.

B. Engineering services shall be performed by factory-trained engineers. System shall be installed either by trained mechanics directly employed by Control Contractor or by subcontractors who are under direct supervision of Control Contractor's field representative.

C. Control Contractor shall be responsible for complete installation of all control devices, (except as noted), wiring, and pneumatic terminations at DDCP locations to accomplish control sequences specified in this project manual or on drawings. Power for field mounted devices that require 24 VAC, 60 Hz shall be powered from 120 to 24 VAC transformer panels provided by the Control Contractor. Control Contractor shall also be responsible for any additional instrumentation

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 2 described in point schedules found in Contract Documents, which may not be directly related to any specified control sequences.

D. Mechanical Contractor shall furnish and install all wells, taps, and other mechanical interfaces required for control equipment mounting into piping systems. Mechanical Contractor shall install all in-line mounted devices, such as valves, dampers, flow meters, static pressure probes, etc., furnished by Control Contractor. Control Contractor is responsible for installation of all other control devices, such as actuators, linkages, sensors, air terminal controllers, flow transducers, remote mounted control devices, control panels, control transformers, etc.

E. All electrical work required, as integral part of control work is responsibility of Control Contractor. Control Contractor is responsible for providing final control power connections including conduit, wire, and/or disconnect switches to all control devices from appropriate electrical distribution panels. 1. Electrical Contractor will provide circuit breakers required to provide electrical power to DDCP’s panels. 2. 120 to 24 VAC transformer panels shall be mounted adjacent to DDCP panels and powered from dedicated electrical circuit. 3. Should any change in number of DDCPs or addition of other electrical equipment after contracts are awarded, Control Contractor shall immediately notify Electrical Contractor of change. Additional costs due to these changes shall be responsibility of this Contractor. 4. Coordinate with Electrical Contractor for additional power requirements.

F. Materials shall be as specified unless approved through procedures for product substitution specified in Division 01. Control Contractor shall provide components not specifically indicated or specified, but necessary to make system function within the intent of specification.

G. All electrical products to be listed and labeled by UL and comply with NEMA Standards.

H. Provide weather protection cover or weatherproof control devices where required for control devices located outdoors.

1.6 SUBMITTALS

A. Shop Drawings: 1. Refer to Division 01 General Requirements. 2. Submit manufacturer's printed product data sheets for all control devices and all materials listed in bill of material in Control Contractor’s control drawings. Datasheets shall be submitted electronically in pdf format with bookmarks provided for each individual device and table of contents listing each device manufacturer and full model number with links to device pages. Organize sheets in order of model number, alphabetically, then numerically. 3. Submit data concerning type of signal wiring and installation methods including raceway types and grounding methods. a. Submit voltage drop calculations for all low voltage DDC circuits. Voltage drop to include number of devices and wiring run lengths, calculated voltage available at each device. 4. Submit control drawings including, but not limited to, the following: a. Front sheet index for projects with more than 10 control drawing sheets. b. Overall system/network architecture drawings: Provide block diagram showing relationship of each controller, control panel, or other network devices relative to each other, label room location of each device, number and indicate model number of each device, indicate network types, and general cabling routing. c. Control Drawings: Provide graphic representation of systems with all major inline components to properly locate all control devices. Identify controlled devices with their software designation on drawings, including unique valve and damper tag numbers.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 3 d. Detailed wiring and piping diagrams show point-to-point hookup details of all transducers, relays, outputs, inputs and subsystem components. Label all pneumatic lines and control wires with field ID numbers/colors. e. Bill of Materials: Identify actual product model number used for each control device for each schematic control drawing. 1). Bill of material shall be included on flow diagrams for each system and on panel layouts showing panel components. f. Sequence of operation: Provide written narrative describing each control sequence indicating method of control. Identify sensors, controllers, and actuators used with references to tag number of the controlled device. Include setpoints and offsets of each control loop. 5. Instrumentation submittals can be submitted as a separate submittal from control shop drawings but must be submitted at the same time as control shop drawings. 6. Submit valve schedules with shop drawings that indicate unique tag numbers for each device, equipment or system served, device model numbers, sizes, shutoff head required, actuator air pressure or force required to meet shutoff head, torque requirements for rotary valves, flow coefficients (Cv) for 10% and 100% valve stem travel, actual flow requirements based on equipment shop drawings, calculation of actual pressure drops, actuator model number, actuator torque capacities and pilot positioner locations.

B. Operation and Maintenance Manuals: 1. Refer to Division 01 - General Requirements. 2. Operation and maintenance manuals shall provide descriptions of maintenance on all system components, including sensors and controlled devices. These shall include inspection requirements, periodic preventative maintenance, fault diagnosis, and repair or replacement of defective components, calibration instructions, parts lists, and name, address, and phone number of manufacturers' representative.

C. Software Manual: 1. As part of operation and maintenance manuals, submit one software manual per workstation plus one extra copy for archive use. Software manuals shall be divided into separate parts with tabs for each part. 2. Software Manual parts shall include: a. Complete description of operating system including all commands, configuration programs, printouts, logs, database functions and passwords. Describe general operating procedures, starting with system overview and proceeding to detailed description of each software command feature with sample printed displays and system function description for each option. Include instructions on verifying errors, status, changing passwords and initiating or disabling control programs. b. Complete description of programming language including all commands, configuration programs, control loop functions and testing. Describe general programming procedures, starting with system overview and proceeding to detailed description of each software command feature. Include instructions on creating or modifying any control algorithm or parameter, debugging, etc. This shall include all control functions, algorithms, mathematic equations, variables, setpoints, time periods, messages, and other information necessary to load, alter, test and execute custom or pre-written programs. c. Software Backup: Upon successful completion of acceptance testing, submit to Owner 2 archive copies of all accepted versions of source code and compiled code for all application programs and data files, on CD ROM backup disks. All control software must be readily accessible by Owner using BAS workstation hardware and software.

D. Record Drawings: 1. Refer to Division 01 - General Requirements.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 4 2. Submit revised Shop Drawings indicating all changes made during project.

1.7 FCC COMPLIANCE

A. All digital equipment furnished under this contract shall have been tested and made to comply with limits for Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against interference when operated in commercial environment. All literature shall so note and all equipment shall be so labeled to show this compliance.

PRODUCTS

2.1 GENERAL

A. Pressure and temperature ratings of devices indicated in Part 2 are minimum required. All devices shall be designed to withstand maximum pressure and temperature encountered in the system.

2.2 CONTROL WIRING

A. Control wiring shall be in accordance with National Electric Code and local electrical codes. Final connection points at devices and panels shall be made at terminal blocks either integral to device or separate terminal blocks mounted inside of control panel enclosures. Use of wire nuts and crimped connections are not allowed for terminating control wiring unless approved by Engineer.

B. Refer to Division 26 for specification requirements for conduits and conductors, except as noted.

C. Signal and Power Conductors (24 V and Under): 1. No wire smaller than #18 AWG shall be used, except for manufacturer supplied instrument specific wire, or unless otherwise specified. Use 2 wire stranded twisted/shielded pair 24 VDC for analog and/or discrete input and 24 VAC/VDC output devices. For RTD signal wiring, use #18 AWG stranded, tinned copper twisted/shielded three lead conductor. 2. Conductors not concealed in raceway shall have UL listed plenum rated teflon insulation. 3. Communication Cable: Use control system manufacturer’s standard communications cable or #22 to #24 AWG twisted, shielded pairs, coaxial cable, or fiber optics for communications between remote control panels/devices. Provide 250 ohm, 5 watt, 0.1% tolerance dropping resistors in 4 – 20 mA circuits as required to generate 1 to 5 V signals in 24 VDC powered instrument loops. Provide isolated instrument grounding system per manufacturer's recommendations. 4. 24 VAC Power Conductors shall be #18 AWG, 2-wire twisted pair or larger. Provide Metal Oxide Varistors (MOVs) on 24 VAC/VDC discrete outputs connected to inductive loads to reduce noise levels (i.e., solenoid valves, motor contactors, relays, damper/valve electric actuators, etc.).

2.3 LOCAL CONTROL PANELS

A. Local control panels shall be constructed of steel or extruded aluminum with hinged door and keyed lock, with baked enamel finish of manufacturer's standard color. Construction shall comply with NEMA 1 Standards for interior panels, NEMA 4 for exterior panels.

B. Controlling instruments, temperature indicators, relays, switches and gauges shall be factory installed and permanently labeled. Devices shall be located inside or mounted on face of panel.

C. Unless otherwise indicated, mount control and adjusting switches, temperature indicators and other indicating or manually operated devices on front face of panel with black phenolic engraved nameplates.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 5 2.4 BUILDING LEVEL CONTROLLER

A. Manufacturers: Tridium Java Application Control Engine (JACE)

B. The Building Level Controller connects to high speed building level control network, serves as communications hub for local control units on BACnet MSTP, and has sufficient processor capabilities and RAM to store trending, alarms, configuration, graphics, reports as required.

C. The Building Level Controller shall hold all trending for the Local Control Units that are connected downstream. Trends stored in the building level controller shall be archived in the Building Controls System Server.

D. Include uninterrupted real time clocks capable of time of day, week, and year information to the system as needed to perform software functions. 1. Clocks in multiple Building Level Controllers shall be synchronized to automatically match Building Controls System Server. 2. Accuracy shall be within 1 second per day. 3. The Building Level Controllers shall have the ability to perform all of the following routines: a. Time-of-day scheduling b. Calendar-based scheduling c. Holiday scheduling d. Temporary schedule overrides e. Start-Stop Time Optimization f. Automatic Daylight Savings Time Switch-over g. Night setback control h. Peak demand limiting i. Alarm Management / Trending

E. Provide Flash Memory on board for database storage, trend storage and system software (Minimum 512 MB RAM)

F. Maintain volatile memory and real time clocks for a period of at least 72 hours during power failure. 1. Batteries shall have minimum life of 2 years. 2. Upon power restoration, the following occurs automatically: a. Orderly startup of controlled equipment (user defined) b. Continuation of control algorithms c. Database revision d. Logging of power interruption and restoration times e. Battery recharging 1). Provide local visual indication and system annunciation of low battery power for each battery.

G. The Building Level Controllers shall be able to execute custom, job-specific processes defined by the user, to automatically perform calculations and special control routines.

H. Support firmware upgrades without the need to replace hardware.

I. Include at a Minimum of (1)100 MB port

J. Communication: Provide communication interface cards and drivers as required by the project to support communication protocols, which may include serial RS-232 and RS-485, BACnet and Modbus.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 6 K. Communication Speed: Controllers shall communicate at a minimum of 10 – 100 MBps using Ethernet CAT5 cable.

2.5 DIRECT DIGITAL CONTROL PANEL (DDCP)

A. General: 1. Direct Digital Control Panels (DDCP) shall be microprocessor based, field programmable controllers, capable of performing control and energy management functions, and shall be UL Listed as Signaling Systems. Each DDCP shall include its own microprocessor, power supply, input/output modules, and termination modules as required to perform its intended function. 2. DDCP shall receive discrete electrical or analog electronic field input signals, convert signals for use by controller, perform control sequences, convert controller information into output signals, and provide control output signals to actuators and field control device. All inputs and outputs, including communication connections, shall be electrically or optically isolated from controller. 3. DDCP with analog input modules shall be capable of accepting any form of linear or non- linear voltage (0-5 VDC or 0-10 VDC), current (4-20 mA) or resistive input (0-1000 ohm). 4. DDCP with discrete input modules shall be capable of accepting discrete inputs from any device with isolated, dry-type contacts (no grounds or no voltage) of either normally open (NO) or normally closed (NC) configuration. Provide visible status lights (LEDs) to indicate input point status. 5. Provide input modules capable of interfacing with pulsed output type sensors as required. 6. DDCP with discrete output modules shall have isolated, dry-type contacts (no grounds or no voltage) of either normally open (NO) or normally closed (N.C.) configuration. 7. DDCP shall have capability to scale, offset, and display proper analog value without field hardware modification. DDCP shall convert analog input signals to digital values (A/D conversion) and convert digital values to analog outputs (D/A conversion) for modulating control purposes. 8. Failsafe hardware shall be provided such that BAS failures result in immediate return to local control. If DDCP uses database values from other DDCP and communication network fails or malfunctions, control loop outputs shall continue to function using last value received from BAS. 9. DDCP shall have ability to interface and communicate with central BAS through a dedicated network. DDCP shall be fully operable from and have all points and functions available to centrally alarm at any master DDCP or PC workstation connected to BAS network.

B. DDCP Operator's Interface: 1. Provide communications port to connect display device for operator access to all information and all operating system functions except database reports and graphics functions in each mechanical room. 2. Display keyboards to be alphanumeric with special dedicated keys for functions such as manual-auto, test, function, value, and enter. 3. Keyboard/display units shall be able to display analog variables, binary conditions, point values and condition, and other information required for analysis and adjustment. 4. Provide minimum of one permanent panel mounted keyboard and display for each mechanical equipment room. If manufacturer does not offer dedicated panel mounted keyboard and display unit, provide portable hand-held keyboard and display unit. If manufacturer does not offer dedicated hand-held keyboard and display unit, provide battery powered portable PC unit with proper software and hardware to interface with local DDCP.

2.6 DIRECT DIGITAL CONTROL SOFTWARE

A. DDCP control strategies shall be Owner definable from operator terminals or workstations.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 7 B. Software functions and algorithms shall be sufficient to enable implementation of control sequences as specified and able to maintain continuous control as intended.

C. Control functions shall include both mathematical and logical operators. Control algorithms shall include proportional, integral and derivative control (PID). Adaptive (self-tuning) PID loop parameters, if offered by DDCP manufacturer, shall not be used unless adaptive limits are used to adjust limit values based on system status; or written request is submitted and approved by Engineer.

D. Allow operator to assign unique identifiers of their choice to each connected point. Identifiers must have at least 8 alpha/numeric characters. All reference to these points in programs, reports and command messages shall be by these identifiers.

E. Provide access control (user defined passwords) for system operation. There shall be minimum of 3 access levels. First level shall allow system monitoring only. Second level shall allow monitoring and setpoint, and scheduling revision. Third level shall allow modification of control algorithms. System shall return to secured (monitoring only) mode after 5 minutes of inactive operation.

F. Each DDCP shall contain self-diagnostics that continuously monitor proper operation of panel.

G. If microprocessor malfunctions, control loop outputs shall continue to function using last value received from microprocessor.

2.7 NETWORK HARDWARE

A. Provide network interface hardware for each device connected to network. Each device shall have sufficient performance as not to degrade processing speed specified.

B. Provide network cabling with sufficient performance as not to degrade communication speed specified. Cabling shall be compatible with proposed system.

C. Provide other network support devices that are required for proper operation of network, such as file servers, signal repeaters, network hubs, etc.

2.8 SOFTWARE

A. Existing software is Tridum Niagara N4. Coordinate access to software with owner.

B. Graphics: 1. Develop graphics for Chiller # 9 in the Tridium Niagara N4 platform. 2. Each graphic shall include all control points, devices and user adjustable setpoints/parameters associated with the system. All points, as specified in points list table, shall be displayed and adjustable in graphics. 3. User adjustable points, displayed on any graphic page, shall be identifiable by highlighting (turn blue) upon mouse over. 4. Decimal precision. Unless indicated otherwise, point values shall use the following decimal precision. Temperatures and temperature setpoints: 1 decimal place. Water flow (GPM) and water flow setpoints: 1 decimal place. 5. All valve and damper output positions should be denoted as %OPEN 6. Provide consistency in measurement units. 7. Vendor names, logos, hyperlinks to vendor site, or other vendor identification or promotion, are not permitted on graphics. 8. Provide hyper-link to Chiller #9 controls submittal. 9. Use existing JAR files for graphics. Proprietary JAR files are not acceptable.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 8 2.9 CONTROL VALVES AND ACTUATORS

A. Butterfly Valves (High Performance): 1. Manufacturers: Belimo SHP series 2. Carbon steel body, ANSI Class 150 design, bidirectional bubble-tight shut off at 275 psi without downstream flange, threaded lug type, upper and lower body bearings with thrust bearings, stainless steel disc and shaft, double offset shaft, RPTFE seats. 3. Actuators: a. Manual Gear - totally enclosed, factory lubed, handwheel rotary actuator with external disc position indication. b. Electric 2-position – Belimo SY series, 120VAC, single phase, space heaters for condensation control, auxiliary switches for open/closed signals from chiller control panel, mechanical dial position indicators, declutchable handwheel drive. c. Electric Modulating – Belimo SY series with servo, 120V, single phase, space heater, potentiometer for continuous position feedback to BAS, fail open. d. Actuators installed outdoors shall be NEMA 4X or IP66 rated or shall be provided with weatherproof NEMA 4X stainless steel enclosures (Belimo ZS-300 or equal) that have removable covers that have clasps or machine screws (no sheet metal screws) and that do not require removing fasteners from the ductwork. e. Valves controlling makeup water or blow down water shall be slow acting actuator with a minimum of 120 sec stroke time.

B. Two-Position Ball Valves (Isolation Valves): 1. Manufacturers: Belimo 2. Valves shall be forged brass body, NPT threaded ends, 150 psi rating for 2” and smaller. 3. Valves shall be furnished with stainless steel ball and stem with fiberglass reinforced Teflon (RTFE) seats and Viton, EPDM or RTFE O-rings and seals. 4. Actuators shall be 120V, single phase, spring return type. 5. Actuators installed outdoors shall be NEMA 4X or IP66 rated or shall be provided with weatherproof NEMA 4X stainless steel enclosures (Belimo ZS-300 or equal) that have removable covers that have clasps or machine screws (no sheet metal screws) and that do not require removing fasteners from the ductwork. 6. Valves controlling makeup water or blow down water shall be slow acting actuator with a minimum of 120 sec stroke time.

2.10 GENERAL INSTRUMENTATION

A. General: 1. No devices containing mercury will be allowed under this specification.

B. Analog Electronic Instrument Indicators: 1. Electronic indicators, used for displaying sensor and/or output values as measured by current or voltage, shall be panel mount type and at least 2" square. Output may be analog needle type or digital with 1/2" high LED or backlit LCD displays. 2. Electronic indicators shall be marked in appropriate units (Degrees, psi, %RH, gpm, cfm, etc.) and with appropriate range of values. Panel mounted indicators shall have minimum accuracy of 1% of scale range. Digital units shall be scaled to show 3 digits plus 1 decimal point.

2.11 DISCRETE ELECTRIC INSTRUMENTATION

A. General:

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 9 1. Electrical devices, switches, and relays shall be UL listed and of type meeting current and voltage characteristics of the project. Terminal connections shall be made at terminal blocks inside of NEMA 1 enclosures unless otherwise specified. Outdoor units shall be NEMA 4 with concealed adjustment. 2. Ratings of normally open and closed contacts shall be adequate for applied load (Minimum 5 amps at 240 V). 3. Accuracy of devices shall be ± 1% of scale with adjustable offset unless otherwise specified.

B. Relays: 1. Equal to IDEC type RH2B-U, miniature 8 blade pilot relay with DPDT silver cadmium oxide contacts rated at 15A, 30 VDC, or 120 VAC. Coil shall match control circuit characteristics. DDC outputs shall be 24 VDC with maximum current burden of 50 milliamps. Rectangular base socket mount with blade type plug-in terminals and polycarbonate dust cover. 2. Provide DIN rail mountable (Snap type) mounting sockets equal to IDEC SH2B-05.

C. Current Switches - Constant Load, Constant Speed: 1. Manufacturers: Veris Industries, N-K Technologies, Absolute Process Instruments, Kele & Associates, R-K Electronics or approved equal 2. These shall be Induction type sensors clamped over single phase conductor of AC electrical power and shall be solid-state sensors with adjustable threshold and normally open contacts. Each current switch shall be selected for proper operating range of current. a. Output: Solid state relay or relay contacts b. Trip Setpoint: Adjustable by multi-turn potentiometer c. Operating Temperature: 0 to 55°C (32 to 131°F) d. Response Time: < 0.5 seconds

D. VS-1 VIBRATION SWITCH 1. Manufacturers: PMC/Beta or approved alternate 2. These shall be solid state type vibration systems mounted to monitored equipment so that measurement axis measurement is in plane perpendicular to and close to equipment center line of rotating shaft. Ensure mounting location vibration resonant frequency is not within vibration sensor's frequency range. 3. Function: Armature mechanism trips on high vibration and operates snap action switch(es) 4. Frequency Range: 0 to 36,000 rpm 5. Vibration Range: 2g, 5g, 10g 6. Set Point Adjustment: 0-100% of range, external 7. Reset: a. Local reset, plus optional remote reset electrical coil b. Reset coil and start up delay: 1). Range: 115 VAC, 230 VAC, 24 VDC, or 115 VDC 8. Start Delay: a. Applying reset coil voltage at start-up holds mechanism from tripping for 20-30 seconds. After which switch is auto-activated - requires electric reset option. 9. Temperature Limit: -40°C to 70°C(-40°F to 158°F) 10. Switch Contact Rating(s): a. 15A, 125 or 480 VAC b. 0.09 kW(1/8 hp), 125 VAC c. 0.18 kW(1/4 hp), 250 VAC d. 1/2 A, 125 VDC e. 1/4 A, 250 VDC

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 10 11. Minimum Enclosures Rating: NEMA 4 12. Hazardous Location Certifications: Div. 1 Class 1 Groups C and D and Div. 1 Class 2 Groups E, F, and G.

E. Position Switches (End Switches): 1. Manufacturers: Allen Bradley, Johnson Controls/Penn, Honeywell, Ruskin, Greystone Energy Systems, Reed National Air Products, NAMCO, Omron or Westlock 2. Provide damper position switches, as required to meet specified sequence. Rotary switches shall be cam action, lever, or proximity type. Provide damper brackets and connecting rods for connecting position switch actuation levers to damper blades or jackshafts. 3. "Tip Switches" or other position switches that contain mercury shall not be used for damper end switch applications.

2.12 ANALOG ELECTRONIC INSTRUMENTATION

A. Insertion Temperature Sensors: 1. Nickel or platinum RTD type, with the following minimum performance: a. Temperature Coefficient: .00385 ohm/ohm/°C b. Accuracy: ± 0.54°F + (0.005 X T) (Class B) c. Accuracy: ± 0.27°F) + (0.005 X T) (Class A) T = Temperature of interest d. Conformance: DIN-IEC 751 e. Operating Range: -50 to 170°F 0 to 99% rh 2. Install insertion sensors in stainless steel probes or wells.

2.13 OTHER CONTROL DEVICES

A. Water Level Controller: 1. Manufacturers: Accu-Trol model WLC-5 2. Inside tower mount style water level sensor with output relays for makeup water valve control and BAS notification. 3. Water level controller shall have (5) stainless steel probes and relay contacts to control makeup water valve and notify BAS of low or high water levels. 4. Provide water level controller with integral stilling chamber. 5. Performance: a. Supply Voltage: 120 VAC/60 Hz b. Minimum Enclosure Rating: NEMA 4X

EXECUTION

3.1 GENERAL

A. Install control equipment and wiring in neat and workmanlike manner to satisfaction of Architect and/or Engineer, and in accordance with manufacturer's recommendations. Maintain clearances, straight length distances, etc. required for proper operation of each device. Mark and detail exact location of inline devices, wells, and taps to be installed by Mechanical Contractor on Coordination Drawings.

B. Coordinate timely delivery of materials and supervise activities of other trade contractors to install inline devices such as immersion wells, pressure tappings, any associated shut-off valves, flow switches, level switches, flow meters, air flow stations, and other such items furnished by Control Contractor that are to be installed by Mechanical Contractor.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 11 C. Install control devices in accessible location.

D. Mount motor control devices within 5 ft of disconnect switch, or starting device furnished by Electrical Contractor unless noted otherwise. Maintain required NEC clearances.

3.2 CONTROL WIRING

A. Provide all electrical wiring required for complete functional control systems, including power circuit to control panels, both line and low voltage, in accordance with all applicable local codes, and the latest version of National Electric Code and NFPA when applicable. 1. Voltage drops for all low voltage circuits shall be calculated prior to installing low voltage circuits. Voltage drop calculations shall be made available to Engineer on demand.

B. Control panels serving equipment fed by emergency power shall also be served by emergency power. Equipment fed by emergency power is so indicated on mechanical equipment schedules and electrical motor schedules.

C. Control panels shall be powered by local UPS (Uninterruptible Power Supply) to ensure continued control of equipment powered by site standby power sources when primary power source is lost. Devices such as Operator Workstations, Floor Level and Building Level Controllers and other critical devices shall be provided with UPS power.

D. Power wiring to control compressors and dryers will be provided by Electrical Contractor. Provide field mounted starters to Electrical Contractor for installation and supervise installation.

E. Install control wiring in raceway system per Division 26 - Electrical, unless otherwise noted.

F. BAS Network Communication Cable: 1. Run communication cable in separate raceways or in cable trays with proper clearances. 2. Install special cable connectors in accordance with manufacturer's recommendations. 3. BAS network communication cable shall not be spliced.

3.3 LOCAL CONTROL PANELS

A. Provide local control panel for each system where more than one control device requires field mounting (air handling units, exhaust fans, miscellaneous control systems including pump controls, heat exchanger controls, etc.). Single devices may be exposed mounted on piping, wall or ductwork. Install local control panel where indicated on drawings or suitable location adjacent to system served.

B. Mount panel on wall with suitable brackets or on self-supporting stand. Mount top of panel no higher than 6 ft above floor. Install panels so front cover door can swing full open without interference.

C. Label all local control panels with its respective unique ID number per Section 20 0553 - Mechanical Systems Identification.

3.4 ADJUSTMENT AND COMPLETION CHECK LIST

A. After completion of installation, follow check standard list procedures defined by instrument vendors to adjust and calibrate all thermostats, control valves, control actuators, controllers, sensors, and other equipment provided in this Contract.

3.5 OWNER TRAINING

A. Provide minimum of 8 hrs of on-site training to Owner's representatives. Conduct training sessions during normal business hours after system start-up and acceptance by Owner. Scheduling of training session(s) will be established by Owner.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 12 3.6 OVERALL BAS ARCHITECTURE

A. Provide hardware/software to update database in less than 1 second for fast-acting control loops such as pressure control, air or water volume control, and air handling unit temperature control, or 10 seconds or less for all other control loops.

B. Control loop software algorithm for each analog control loop shall reside on the same controller as all inputs and outputs required for that specific control loop.

C. Networks that operate via polled response or other types of protocols that rely on central processors, file servers, or other such devices to maintain or manage peer-to-peer communications shall have redundant components to maintain network in the event of failure at central device. Provide automatic changeover to redundant device upon failure of any central type processor without operator intervention.

D. Network shall be multi-drop digital transmission network. Network shall provide communication link between operator's workstation and all remote DDCP and field panels.

E. Each multi-drop trunk shall be within manufacturer's allowable line lengths without signal degradation. All multi-drop trunks shall be interfaced to system via standard EIA or other industry recognized interfaces so that single failure does not disrupt or halt network.

F. Communications between DDCP's and operator's workstations shall allow multiple users to access and use system simultaneously with no loss of system performance.

G. Provide levels of connected networks to connect all DDCP, including terminal DDCP. Communications to terminal devices shall be similar to capabilities and functions of other DDCP and shall be transparent to operator.

H. Number of nodes (devices connected) on any one network shall not exceed 50 % of maximum node capacity published by equipment manufacturer. Provide additional hardware, DDCP, network controllers, etc.) to meet this requirement.

I. Alarm reports from DDCP shall not be impeded by use of either remote or local monitor, nor control stations on network either in access mode or programming mode.

3.7 DIRECT DIGITAL CONTROL PANELS

A. DDC Panel Usage: 1. Select DDCP to provide speed of response required for each control loop type. 2. Each DDCP shall have sufficient I/O capacity to perform specified control sequences and/or included points listed in any point schedules. If DDCP does not have sufficient capacity, provide additional panels to achieve required point count. 3. Analog and critical safety discrete control loops shall have inputs and outputs into/from the same DDCP. Analog control loops for major equipment (chilled water, hot water, convertors, air handling units, etc.) shall have PID control.

B. Cabinets: 1. Provide local control cabinets for all DDCP. DDCP cabinets may be used directly if enclosures are rated for NEMA 1. All cabinets shall utilize one masterkey. Provide 2 spare key sets to Owner.

3.8 SOFTWARE

A. Software from panels shall be permanently stored on CD ROM.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 13 B. Provide the latest version of all standard software, including, operating system and control software. Include any software updates for period of 1 yr coinciding with warranty period. No beta released software shall be used.

3.9 INITIAL PROGRAMMING

A. Control Contractor shall provide initial programming of all controllers to accomplish sequences specified.

B. Provide back-up documentation per software manual submittals for all programs in both written and magnetic media formats.

C. Provide programming of menus to assist new users in accessing screen displays of each point group. Point groups (user definable) shall be initially arranged by DDCP for major equipment and by floor and area for terminal devices. Terminal devices shall also be grouped by air handling system where applicable.

D. Program historical file for run-times and number of start/stops of all motor driven equipment and filters.

E. Program maintenance alarms based on run-times and number of start/stops for all motor driven equipment.

F. Program alarms using the following levels: 1. Level 1 - Maintenance alarm, requiring attention within one to 2 days. (Examples; 2-3°F temperature variance from setpoint, 15-25% relative humidity variance, etc.) 2. Level 2 - Low Level Alarm, requiring attention within 8 hours, preferably during the same shift. (Examples; 4°F or more variance from setpoint, 30% relative humidity or more variance from setpoints, etc., excess start/stops per day, etc.) 3. Level 3 - Critical Alarm, requiring immediate attention. (Examples; non-operation of primary equipment, H-O-A overrides.) 4. Level 1 and 2 alarms shall not interrupt current user operation but shall be logged into alarm summary file indicating status, acknowledgment, and by whom. Level 3 alarms shall interrupt user via audible and/or flashing warning until acknowledged without losing any work in progress. When alarms are acknowledged, the program shall display point group or appropriate graphic display. Level 3 alarms shall also be logged into alarm summary file similar to Level 1 and 2 alarms.

3.10 POINT LIST

A. Provide all points required to implement control sequences specified, whether or not they are listed in schedules. In addition to control points, provide additional monitoring points listed in point schedules or defined in Control Sequences.

B. All outputs, whether sequenced or not, shall have separate programmable hardware outputs. For air handling units, minimum outside air, maximum (economizer) outside air, return, relief air, smoke dampers, heating coil valves, cooling coil valves, humidifier valves, etc., shall each have separate output.

3.11 CONTROL VALVES

A. Furnish control valves as shown on the drawings and as required to perform control sequence specified. Provide supervision and coordination of installation by 232118 contractor.

B. Calibrate position feedback potentiometers where specified, with range and gain factors as required for proper operation per manufacturer's recommendations.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 14 3.12 GENERAL INSTRUMENTATION

A. Pressure Gauges (Pressure Indicators): 1. Pressure gauge tappings in piping will be installed by Mechanical Contractor.

B. Thermometers (Temperature Indicators): 1. Install thermometers to permit easy reading from floor or operating platform (within 3 ft of line of sight). 2. Thermometer wells in piping will be installed by Mechanical Contractor.

3.13 LOCAL CONTROL PANELS

A. Install remote mounted devices, controllers, I/O terminal blocks, power supplies, etc. inside of local control panels.

B. Locate panels as shown on drawings.

C. Locate panels adjacent to equipment served with a minimum of 3 ft clearance in front of the door. Provide sufficient clearances to allow full door swing and full access to all internal components. Submit proposed panel locations with shop drawings.

D. Mount top of panel between 5 and 6 ft above floor so gauges and indicators are at eye level.

3.14 DISCRETE AND ANALOG INSTRUMENTATION

A. Water Flow Meters and Flow Switches: 1. Install flow measuring devices with recommended straight pipe diameters upstream and downstream of elbows, tees, valves, or other fittings, that cause uneven turbulent flow conditions. 2. If no recommendations are given, provide straight pipe equal to 10 pipe diameters upstream and 5 pipe diameters downstream of flow measuring device.

B. Sensor Wells: 1. Mount sensor wells as shown on drawings as required by other contract documents. Wells mounted in pipe 3" and larger may be installed in horizontal or vertical lines provided element is always in flow (for condensate and other gravity return lines, install in bottom of pipe). Wells mounted in pipe 2-1/2" and smaller shall be installed at elbow tee fittings with well pointed upstream. Minimum of 2" pipe size for elbow tee installation.

C. Transmitters and Indicators: 1. Locate transmitters at sensing device or within 100 ft for remote mounted transmitters. For hot systems (150°F and higher) mount electronics on side of pipe or remotely mount. For indicating type instruments, locate indicating element with 6 ft of floor with readout easily visible from floor level. Provide remote readouts if necessary.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Control Systems Date 08.27.2018 23 0901 - 15

INTENTIONALLY BLANK PAGE SECTION 23 2116

PIPE AND PIPE FITTINGS

PART 1 - GENERAL

1.1 DESCRIPTION

A. This Section includes pipe and pipe fitting specifications and installation requirements for heating and cooling systems.

B. Specification of an item in this or any other sections shall not relieve Contractor from providing all items, articles, materials, operations, methods, labor, equipment and incidentals necessary for a complete and functional system.

C. Use only new material, free of defects, rust and scale, and guarantee for services intended.

D. Use material meeting the latest revision of ASTM specifications as listed in this specification.

E. Follow local codes if they require other types of pipe or joints.

F. Use only long radius elbows having centerline radius of 1.5 pipe diameters unless otherwise indicated.

G. Manufacturer, pressure class, size and heat code of each fitting and flange shall be permanently identified on its body in accordance with MSS SP-25.

H. Where size for a pipe segment is not indicated, the pipe segment size shall be equal to the largest pipe segment to which it is connected. Transition to smaller size shall occur on the side of fitting where smaller size is indicated.

I. Unless otherwise indicated, fittings and accessories connected to pipe shall be of the same material as the pipe.

J. Unless otherwise indicated, construct piping for highest pressures and temperatures in respective system in accordance with the latest revision of the applicable Sections of ASME Code for pressure piping, ASME B31 including the following: 1. B31.9 Building Services Piping

K. Non-metallic piping is acceptable only for services indicated. It is not acceptable in occupied spaces and ventilation plenum spaces.

1.2 SUBMITTALS

A. Shop Drawings for each piping system for all pipe sizes including, but not limited to, the following: 1. Name of system 2. Pipe; ASTM number, grade if known, type, wall thickness, material 3. Fittings; ASME number, grade if known, class, type, wall thickness, material 4. Joint type 5. Flanges; ASTM number, grade, class, type, material 6. Bolts and nuts; material 7. Thread joint sealants; material 8. Flange gaskets; material, rating 9. Unions; ASTM number, type, material, rating 10. Type of welding

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Pipe and Pipe Fittings Date 08.27.2018 23 2116 - 1 11. Welding Quality Control Program 12. Test pressure and media 13. Pipe flushing/cleaning plan 14. Pipe cleaning method 15. All other appropriate data

B. Submit pipe certification as specified under Pipe Certification in this Section.

C. Submit required documents as specified under Pipe Welding in this Section.

D. Provide Flushing and Cleaning Plan: 1. Submit pipe flushing/cleaning plan for water, fluid, steam and condensate systems for approval. Plan shall detail methods for compliance with requirements of this section, including: a. Size, power source, and connection points of contractor provided pumps that will be used for flushing and cleaning. b. Calculations, along with drawings or diagrams showing, sectioning or zoning of piping systems to achieve required velocities, location and means of temporary bypasses and returns. c. Flushing schedule and drawings or diagrams that will be used for inspection and sign off prior to and after procedure, at Owner’s option. 2. Submit documents showing verification of flushing/cleaning following specified requirements and results.

1.3 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Furnish pipe with plastic end-caps/plugs on each end of pipe. Maintain end-caps/plugs through shipping, storage and handling to prevent pipe-end damage and eliminate dirt and construction debris from accumulating inside of pipe.

B. Where possible, store materials inside and protect from weather. Where necessary to store outside, elevate well above grade and enclose with durable, waterproof wrapping.

C. Before shipping, all carbon steel piping shall be free of rust and scale, and furnished with plastic end caps/plugs on each end of pipe.

1.4 PIPE WELDING

A. Procedure and Welding Qualification Records: 1. Submit Welding Procedure Specifications (WPSs) and their supporting Procedure Qualification Records (PQRs) to be used on the work to Engineer for review and approval prior to performing any welding. These documents shall meet requirements of ASME B31.1 and B31.9, as applicable. 2. Unless otherwise indicated, welding shall be done using only the following processes: a. Shielded Metal Arc Welding (SMAW), also known as "stick" welding b. Gas Tungsten Arc Welding (GTAW), also known as TIG and Heliarc welding c. Gas Metal Arc Welding (GMAW), also known as MIG welding d. Flux-Cored Arc Welding (FCAW), a variation of GMAW e. Submerged Arc Welding (SAW) 3. Unless otherwise stated, fabrication, installation, inspection, examination and testing shall be in accordance with ASME B31.1 or B31.9, as applicable. 4. Backing rings (chill rings) or consumable inserts are not allowed, unless specifically requested by Owner or Engineer.

B. Quality Control Program:

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Pipe and Pipe Fittings Date 08.27.2018 23 2116 - 2 1. Submit written quality control program for review and approval prior to implementing any welding on this project. Quality control program shall include the following as minimum: a. Explanation of how Contractor will assure proper fitup for each weld. b. Explanation of how Contractor will document welds performed by individual welding operators for systems under ASME B31.1. c. Explanation of how Contractor will assure that proper welding procedure is being followed. d. Credentials of personnel responsible for required weld examinations.

C. Weld Inspection and Examination: 1. Provide examination services for all welding for this Project. Examination shall be in accordance with requirements of ASME B31.1, Table 136.4 or B31.9, as applicable. 2. Periodically, as welding progresses, submit report, signed by weld examiner, indicating status of project welding quality. 3. Arrange with Owner's Inspector for observation of fitup and welding methods prior to implementing any welds, including shop welds, on this Project. 4. In addition, Owner's Inspector will perform any additional observations deemed necessary before, during, or after fabrication to assure, to Owner's satisfaction, that proper welding is provided. Owner reserves the right to perform independent examination of welds. If Owner has any concern because of such examination Owner reserves the right to stop in progress welding work, without any cost to Owner, until resolution satisfactory to Owner is reached.

D. Welder Qualifications: 1. Each welder and welding operator must qualify by passing required procedure test before performing any project welds. Submit copy of Manufacturer's Record of Welder or Welding Operator Qualification Tests (WPQS) as required by Section IX of ASME Boiler and Pressure Vessel Code for all welding procedures to be performed by welding operator. 2. Welder qualifications must be current. If qualification test is more than 6 months old, provide record of welding continuity for each welder. 3. Record of welding continuity is intended to show that welder has performed welding at least every 6 months since the date that welder qualification test was passed for the submitted welding procedure specification. 4. Record of welding continuity shall include, at minimum, the following: a. Welder's employer name and address b. Date Welder Qualification Test was passed c. Dates indicating welding continuity 5. Welders shall be qualified as required by ASME B31.1 or B31.9, as applicable. In addition, there shall be an independent witness of welder tests. That witness shall be representative of independent testing laboratory, Authorized (Code) Inspector, Owner's or Engineer's Inspector or consultant approved by National Certified Pipe Welding Bureau. 6. Welder qualifications must cover all pipe sizes and wall thickness used on this project. Test segments or coupons shall be appropriately selected for qualification. Test position shall be arranged in "6G position."

1.5 PIPE CERTIFICATION

A. Certification is required for all pipe within scope of ASME B31.1. Submit certification papers, as outlined below, within 30 days of delivery of pipe to project site.

B. Type S Pipe: 1. Furnish manufacturer's mill certificates (material test report) including dimensions, heat numbers, chemical analysis and tensile test results for pipe shipped to project site.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Pipe and Pipe Fittings Date 08.27.2018 23 2116 - 3 PART 2 - PRODUCTS

2.1 CONDENSER WATER

A. 2-1/2" through 24": 1. Pipe: ASTM A53, Grade A or B, Type S, Grade B, standard weight, carbon steel 2. Fittings: ASTM A234, WP 91 tempered, standard weight, seamless, carbon steel weld 3. Flanges: a. ANSI Class 150, ASTM A105, ASME B16.5, welding neck 4. Bolts and Nuts: a. ASTM A193, Grade B7 or B16 with nuts conforming to ASTM A194, Grade 2H. 5. Gaskets a. ASME B16.21 and ASTM F104 flat ring type, asbestos-free, compressed inorganic fiber with nitrile binder. b. 2-1/2” thru 12” 1). Gasket thickness 1/16” 2). Maximum Seating Stress (y) 3050 psi 3). Minimum Gasket Factor (m) 4.2 c. 14” and larger: 1). Gasket thickness 1/8” 2). Maximum Seating Stress (y) 4400 psi 3). Minimum Gasket Factor (m) 5.2 d. Garlock, Klingersil or J.M. Clipper, similar to Garlock 3000.

2.2 EQUALIZER LINE

A. 30” Corrugated PE pipe and fittings. Installed per manufacturer’s recommendations.

B. Corrugated PE pipe and fittings, NPS 12 to NPS 60 (DN 300 to DN 1500); AASHTO M294, Type S with smooth waterway for coupling joints. Pipe shall be produced from PE certified by the resin producer as meeting the requirements of ASTM D3350, minimum cell class 335434C. 1. Water tight joints shall be made using a PVC or PE coupling and rubber gaskets as recommended by the pipe manufacturer. Rubber gaskets shall conform to ASTM F477.

2.3 CHEMICAL TREATMENT

A. Condenser Water System: 1. Chlorinated polyvinyl chloride (CPVC), Schedule 80, ASTM D1785 with fittings ASTM F439.

2.4 PRESSURE GAUGES AND TAPPINGS

A. Use pipe and pipe fittings as indicated for the system to which pressure gauge or tapping is connected. Use "Threadolets", "Sockolets" or tee fittings for tappings. Refer to Part 3 under General for use of "Threadolets" and "Sockolets".

B. Gauge pipe shall be 1/4" unless otherwise indicated.

2.5 CHLORINATED POLYVINYL CHLORIDE (CPVC) PIPING

A. All Sizes: 1. Pipe: CPVC Type IV, Grade I, with a cell classification of 3447 per ASTM D1784. CPVC Schedule 80 pipe shall meet the requirements of ASTM F441. 2. Fittings: All fitting materials shall be CPVC with a cell classification of 23447 per ASTM D1784. CPVC Schedule 80 fittings shall meet requirements of ASTM F439.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Pipe and Pipe Fittings Date 08.27.2018 23 2116 - 4 3. Joint: ASTM F493 CPVC heavy bodied solvent cement

2.6 UNDERGROUND PIPE WRAP

A. Use for all underground steel piping, which is not encased in conduit. Material to be Tapecoat 20, or approved equal, flexible polymer film with coal tar and synthetic elastomeric coating of 58 mil thickness. Primer shall be Tapecoat TC Omni-prime or approved equal.

PART 3 - EXECUTION

3.1 GENERAL

A. Remove foreign materials before erection. Ream ends of piping to remove burrs.

B. Install piping to allow adequate service space for equipment. Refer to drawings and/or manufacturer's recommendations. Install vertical piping plumb. Where interferences develop in field, offset or reroute piping as required to clear such interferences.

C. Mitered elbows, welded branch connections, notched tees and "orange peel" reducers are not allowed. Unless specifically indicated, reducing flanges and reducing bushings are not allowed. Reducing bushings may be used for air vents and instrumentation connections.

D. Unless otherwise indicated, use fittings as specified in Part 2 of this Section for elbows, tees, reducers, etc.

E. Slope pipe and install drains at the end of the above ground horizontal condenser water supply headers to facilitate draining of the pipe.

F. Do not install piping over electrical panelboards, switchgear, switchboards or motor control centers.

G. Install valves, control valves and piping specialties, including items furnished by others, as specified and/or detailed.

H. Make connections to all equipment installed by others where that equipment requires piping services indicated in this Section.

3.2 THREADED PIPE JOINTS

A. Threads of pipe and fittings shall conform to ASME B1.20.1.

B. Ream pipe ends after cutting and clean before erection. Apply thread sealants to cleaned male threads. Assemble joint to appropriate depth and remove any excess pipe joint compound from tightened joint.

3.3 FLANGED JOINTS

A. Clean flange surfaces and align them parallel. Bolt holes of gaskets shall be cut slightly larger than bolt diameter. Gasket ID shall be slightly larger than flange ID.

B. Position gasket concentrically so compression is equally distributed over entire gasket surface.

C. Lubricate bolts and run nuts down by hand.

D. By using torque wrench, tighten nuts in the proper sequence so gasket is compressed evenly, and to the appropriate torque specified by bolt manufacturer.

3.4 WELDED PIPE JOINTS

A. Inspect pipe and pipe fittings for roundness before they are fit-up or set in place.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Pipe and Pipe Fittings Date 08.27.2018 23 2116 - 5 B. Properly clean and prepare pipe base material before fit-up. Verify joint land and bevel.

C. Preheat pipe base material as required by welding procedure specification. Temperature of pipe material must be minimum of 32°F before welding.

D. Properly align and adjust joint as required by welding procedure and thickness of material. Verify tolerances after tacking sequence.

E. Use weld material diameter as procedurally required for type and thickness of work being done.

F. Use sufficient argon pre-purge and argon post-purge for GTAW processes. Post purge should be until weld is no longer glowing plus 5 seconds. Maintain purge for at least 2 layers of weld material.

G. Properly store welding materials.

H. Clean tacks before welding out. Remove slag after each pass by grinding to avoid slag inclusion.

I. Weld reinforcement shall not exceed limits established in Chapter V of ASME B31.1.

J. Brush each weld free of rust and paint with rust resistant product that matches piping surface color.

3.5 PLASTIC PIPE JOINTS

A. Use cleaning procedure and solvent cement as recommended by pipe and fitting manufacturers for material being used.

3.6 CHLORINATED POLYVINYL CHLORIDE (CPVC) PIPING

A. Install CPVC piping in strict accordance with pipe and fitting manufacturer's recommendations, including support spacing, compensation for thermal expansion and contraction and solvent cementing.

3.7 CHEMICAL TREATMENT

A. Install piping as indicated on drawings, as detailed, and as recommended by supplier of chemical treatment equipment.

3.8 UNDERGROUND PIPE WRAP

A. Remove dirt and other foreign material from exterior of pipe. Apply primer as recommended by manufacturer. Use spiral wrap process for applying tape to pipe. Repair any breaks in tap coating caused by installation process.

3.9 UNDERGROUND PIPING

A. Install underground piping as indicated on drawings, according to manufacturer's instructions and installation drawings and in accordance with AWWA C600.

B. Provide excavation as specified in Section 20 0520 - Excavation and Backfill. Install piping at elevations indicated on drawings. Provide 4” bed at bottom of trench, as specified in Section 20 0520 - Excavation and Backfill, for installation of piping. Excavation shall be maintained free of water at all times. Provide dewatering equipment as required.

C. Perform hydrostatic pressure test as herein specified for each underground piping system, except the equalizer line. Repair any leaks and retest until successful test has been completed. Contractor to drain all water used for hydrostatic test, to storm sewer.

D. Contractor to provide means for conducting drain water from underground piping to storm sewer, i.e. pumps, hoses, piping, etc.

E. Furnish all labor and equipment required to perform hydrostatic test and draining of piping.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Pipe and Pipe Fittings Date 08.27.2018 23 2116 - 6 F. After each piping system has been successfully hydrostatic tested, backfill that system as specified in Section 20 0520 - Excavation and Backfill. At Contractor's option, Contractor may backfill system prior to hydrostatic test. If system does not pass hydrostatic test, Contractor shall be responsible for all excavation and backfill required to repair leaks. Hydrostatic test shall be repeated until successful hydrostatic test has been completed.

3.10 UNIONS AND FLANGES

A. Install union or flange at each automatic control valve and at each piping specialty or piece of equipment that requires tube pull or removal for maintenance, repair or replacement. If required, provide additional unions or flanges to facilitate removal of piping sections that interfere with tube pulls or equipment removal. Where valve is located at piece of equipment, provide flange or union connection on equipment side of valve.

B. Concealed unions or flanges are not allowed.

3.11 PIPING SYSTEM PRESSURE TESTS

A. Owner and/or Owner's representative may elect to witness pressure test. Notify Owner and/or Owner's representative at least 3 days in advance.

B. Conduct pressure test prior to flushing and cleaning of piping systems.

C. Conduct hydrostatic (HYDRO) test in accordance with ASME B31.1 137.4. Test pressure shall be in accordance with ASME B31.1, but shall not be lower than the minimum test pressure listed below.

D. If leaks are found, repair with new materials and repeat test until leaks are eliminated. Caulking will not be acceptable.

E. No pressure drop shall occur during test period. Any pressure drop during test period indicates leakage.

F. Provide pumps, gauges, instruments, test equipment, temporary piping and personnel required for tests and provide removal of test equipment and draining of pipes after tests have been made.

G. For hydrostatic tests, remove air from piping being tested by means of air vents. Measure and record test pressure at high point in system.

H. Conduct pressure tests with parameters indicated below:

Minimum Remarks System Test Pressure Condenser water 100 psig HYDRO

3.12 FLUSHING CONDENSER WATER PIPING SYSTEMS

A. Contractor shall visually inspect internal portion of each pipe segment during installation. Remove all dirt and foreign matter prior to installing additional segments.

B. After piping has been installed, flush pipeline system clean. Flush pipeline at minimum velocity of 5 fps. Flushing shall continue until water draining out of pipe is clear and clean, as determined by Owner's representative. Cleaning water drained from piping shall be collected and conducted to storm sewer.

C. Contractor shall provide all water for flushing.

D. Contractor shall provide all temporary piping from water source to piping system and shall provide means for conducting cleaning water from underground piping system to storm sewer; i.e. pumps,

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Pipe and Pipe Fittings Date 08.27.2018 23 2116 - 7 piping, hoses, etc. Remove all temporary piping, pumps, hoses, etc. from site after flushing has been completed.

3.13 PIPE PAINTING

A. Exposed exterior carbon steel, black iron or other ferrous pipe and fittings shall be prepared and painted by qualified painters using corrosion inhibitive paints. Pipe shall be prepared in accordance with paint manufacturer's instructions and primed (2 coats) and finish painted (2 coats). Paint type shall be approved by Owner/Engineer. Color shall be approved by Owner.

B. Above ground CPVC pipe shall be prepared and painted with a light-colored acrylic or latex paint that is chemically compatible with the CPVC products. Compatibility information should be confirmed with the paint manufacturer. The use of oil based paints is not recommended.

C. Protect piping from weather and paint promptly to prevent corrosion.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Pipe and Pipe Fittings Date 08.27.2018 23 2116 - 8 SECTION 23 2118

VALVES

PART 1 - GENERAL

1.1 RELATED WORK

A. Section 23 2116 – Pipe and Pipe Fittings

B. Section 23 0901 – Control Systems

1.2 SUBMITTALS

A. Shop Drawings for each system for all sizes including, but not limited to, the following: 1. Name of system 2. Manufacturer's name 3. Type 4. Model number 5. Materials of construction 6. Temperature/pressure ratings 7. Manufacturer's data sheets clearly cross-referenced 8. All other appropriate data

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Gate valves, globe valves, check valves, and drain valves: Crane, Nibco, Stockham, Powell, Milwaukee, Hammond, or Grinnell equal to manufacturer's Figure number listed.

B. Provide valves of same make for these services.

C. End connections: 1. For Copper Tubing, NPS 2 and Smaller: Threaded ends. 2. For Copper Tubing, NPS 2-1/2 to NPS 4: Flanged ends. 3. For Steel Piping, NPS 2 and Smaller: Threaded ends. 4. For Steel Piping, NPS 2-1/2 and Larger: Flanged ends.

D. Provide valve stem extensions with sufficient length to allow for insulation where insulation is specified.

2.2 WATER SYSTEM VALVES

A. Ball Valves: 1. 2" and Smaller: ASTM B584 bronze body, chrome plated brass/bronze or stainless-steel ball, full port, Teflon seat rings, blowout-proof stem, 2-piece construction, 600 psi WOG, 150 psi SWP, Nibco Fig. T(S)-580-70, Apollo No. 70, Watts, Milwaukee BA-150, Hammond, Kitz or Anvil.

B. Shut-Off Valves: 1. 2" and Smaller: ball valves as specified in this Section 2. 2-1/2" and Larger: butterfly valves as specified in this Section

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Valves Date 08.27.2018 23 2118 - 1 C. Butterfly Valves: 1. Refer to 230901 – Control Systems for butterfly valves, both manual and actuated.

D. Slide Gates: 1. Manufacturers: Waterman SS-250 series or approved equal. 2. Type 304 Stainless Steel frame, yoke, cover, slide, stems, wall brackets, fasteners, and anchor bolts. 3. Neoprene seats and seals. 4. Install per manufacturer’s recommendations.

PART 3 - EXECUTION

3.1 GENERAL

A. Install valves as shown on plans, details and according to manufacturer's installation recommendations.

B. After piping systems have been pressure tested and put into service, but before final adjusting and balancing, inspect valves for leaks. Adjust, replace packing or replace valves to stop leaks.

C. Install control valves furnished under Control Systems. Provide reducing fittings as required.

D. Refer to Section 23 2116, Part 3 for reducing fittings requirement for valves smaller than pipe size.

3.2 SHUT-OFF VALVES

A. Provide shut-off valves at all equipment, at riser take-offs at each floor, and at each automatic valve for servicing.

3.3 GAUGE VALVES

A. Provide gauge ball valves at each pressure gauge as shown and at each pressure tapping where pressure sensing tubing is connected.

3.4 BUTTERFLY VALVES

A. Install butterfly valves provided under section 230901 – Control Systems.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Valves Date 08.27.2018 23 2118 - 2 SECTION 23 2120 PIPING SPECIALTIES

GENERAL

1.1 RELATED WORK

A. Section 23 0594 - Water Systems Test Adjust Balance

B. Section 23 2118 - Valves

1.2 SUBMITTALS

A. Shop Drawings for all items in this Section including, but not limited to, the following: 1. Manufacturer's name and model number 2. Identification as referenced in the Documents 3. Materials of construction 4. Dimensional data 5. Capacities/ranges 6. Temperature/pressure ratings 7. Pressure drop 8. All other appropriate data.

PRODUCTS

2.1 MATERIALS

A. Unless otherwise specified, select devices for highest pressures and temperatures existing in respective systems in accordance with ANSI Specifications.

B. Piping specialties in copper piping shall have bronze or brass body with solder ends.

2.2 PRESSURE GAUGES

A. Manufacturers: Ashcroft, U.S. Gauge, Marsh, Trerice, Miljoco, Marshalltown, Weksler, Winters or Weiss equal to Trerice 600 Series

B. Minimum 4-1/2" diameter die cast aluminum case, glass or acrylic plastic window, phosphor bronze bourdon tube with bronze bushed movement, recalibration from front of gauge dial and 1/4" NPT forged brass socket.

C. Gauge accuracy shall meet ANSI B40.100 Grade 1A (±1% full scale).

D. Select gauge range so that normal operating pressure is at midpoint of gauge.

E. Pressure Snubbers: 1. 1/4" or 1/2" size, matching gauge pipe size as specified in Section 23 2116 - Pipe and Pipe Fittings, 1000 psig WP. Brass for carbon steel pipe or copper pipe.

2.3 PRESSURE/TEMPERATURE TEST STATIONS

A. Pete's plugs made by Peterson Equipment Company, Sisco, Super Seal by Flow Design Inc. (FDI), or approved equal.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Piping Specialties Date 08.27.2018 23 2120 - 1 B. Test plugs shall be 1/4" or 1/2" NPT, brass body and cap, 1-1/2" length for non-insulated pipe and 3" length for insulated pipe, with Nordel self-closing valve cores, rated at 500 psig at 275°F, and shall receive either temperature or pressure probe with 1/8" OD.

2.4 PIPELINE STRAINERS

A. Manufacturers: Metraflex, Mueller Steam Specialty, Nibco, Hoffman, Eaton (formally Hayward), Sarco, Keckley, Armstrong, Wheatley, Conbraco, Titan, or Streamflo

B. Liquid System: 1. 2" and Smaller: full pipeline size, Y-type, with removable screen caps, cast iron, Class 250 (400 psi/150°F WOG), threaded ends for carbon steel piping and cast bronze, Class 125 (200 psi/150°F WOG), solder ends for copper piping. Screen caps shall have threaded blowdown connection. 2. 2-1/2" and Larger: full pipeline size, Y-type, Class 125(200 psi/150°F WOG), cast iron, flanged ends. Furnish strainer with bolted screen retainer and off-center blowdown connection. 3. Liquid Service Screens: stainless steel with screen perforation as indicated below. For strainers serving equipment where manufacturer requires specific screen perforation, provide per manufacturer requirements. Maximum pressure drop shall be 4 ft WG through clean strainer.

Pipe Size Closed System Open System 2" and smaller 1/32" (20 mesh) 1/8" 2-1/2" to 4” 1/16” 1/8" 5" and over 1/8" 1/8"

EXECUTION

3.1 GENERAL

A. Install piping specialties as indicated on plans, details and according to manufacturer's recommendations.

3.2 PRESSURE GAUGES

A. Install gauges for services other than steam with pressure snubbers and gauge valves.

3.3 PRESSURE GAUGE TAPPING

A. Install tappings with gauge valves at each point where sensing device is required under Control Systems and at gauge locations as shown.

B. Use threadolets or tee fittings to mount gauge tappings or test stations. Install fittings for side mounting to avoid collection of air or dirt.

3.4 PRESSURE/TEMPERATURE TEST STATIONS

A. Pete's plug may be used in lieu of thermometer test well and pressure gauge tappings.

B. Use threadolets or tee fittings to mount gauge tappings or test stations. Install fittings for side mounting to avoid collection of air or dirt.

3.5 PIPELINE STRAINERS

A. Provide drain valve at each strainer blowdown connection with hose threaded adapter and cap. Valve size shall be same as blowdown connection size.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Piping Specialties Date 08.27.2018 23 2120 - 2 B. Install strainers in water systems as indicated in piping hookup details.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Piping Specialties Date 08.27.2018 23 2120 - 3

INTENTIONALLY BLANK PAGE SECTION 23 2123 PUMPS

GENERAL

1.1 RELATED WORK

A. Section 20 0514 - Variable Frequency Motor Controller

1.2 SUBMITTALS

A. Shop Drawings including, but not limited to, the following: 1. Manufacturer's name and model number 2. Identification as referenced in the documents 3. Capacities/ratings 4. Pump curves with operating point clearly indicated 5. Seals 6. Materials of construction 7. Dimensions and weights 8. Manufacturer's installation instructions 9. All other appropriate data

1.3 DESIGN CRITERIA

A. Pump sizes, capacities, pressures and operating characteristics shall be as scheduled.

B. Pumps shall meet or exceed operating efficiencies scheduled.

C. Furnish pumps complete with motors, impellers, drive assemblies, bearings and accessories as hereinafter specified.

D. Select motor with sufficient kW(hp) rating for non-overloading operation over entire pump curve.

E. Furnish each pump and motor with nameplate giving manufacturer's name, serial number of pump, capacity in L/s(gpm) and head in meters(ft) at design condition, kW(hp), voltage, frequency, speed and full load current.

F. Test pumps hydraulically at 150% of rated pressure per Hydraulic Institute Standards, clean and paint before shipment. Manufacturer shall certify all pump ratings.

G. Pumps shall operate without objectionable noise or vibration.

1.4 FACTORY TESTING

A. Pump manufacturer shall conduct factory performance testing of completely assembled pump, drive line, motor, and frame base plate unit before shipment.

B. Factory performance testing shall be in accordance with Hydraulic Institute 14.6.

C. For pumps provided with variable speed drives, test shall include operating the assembled unit over the entire variable speed range, variable head, and variable flow performance range contained on submitted pump Shop Drawing performance curves performance window formed between minimum flow and maximum flow limitations established by submitted NPSHR curve. Test each pump at 50 rpm intervals between 100 rpm and maximum design performance rpm specified.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Pumps Date 08.27.2018 23 2123 - 1 D. After testing is complete and before pump is shipped, manufacturer shall submit to Engineer for final acceptance, 6 original test reports which present all measured test data. Each original report shall be signed by authorized factory pump Design/Pump Test Engineer.

E. Signed test reports shall include the following statement:

"Provided that the pump being furnished is operated within the entire window of operating points between the tested speeds, heads, and flows, manufacturer shall warranty the pump against any performance loss, rotating part damage, stationary part damage, or structural damage caused by mechanically induced or fluid induced vibration occurring within the pump or within the foot print of the pump frame base plate." This warranty includes all materials and labor to repair the pump for a period extending 12 months after final acceptance of the system.

PRODUCTS

2.1 VERTICAL TURBINE PUMPS

A. Manufacturers: Peerless, Floway, Goulds, Flowserve, Deming, Weinman, or Fairbanks Nijhuis.

B. Pumps shall be vertical mounted with fabricated steel discharge heads, ANSI Class 150 flanges, steel sole plates, flanged column construction, cast iron bowl units, bronze impellers, replaceable bronze wearing rings on bowls, suction bells, inlet strainers, and pressure gauge connection.

C. Pumps shall be designed and tested to Hydraulic Institute Standards

D. Pump shall be furnished with stainless steel pump shafts and carbon steel pump columns.

E. Motors: 1. Comply with the latest NEMA MG-1, Section IV, Part 31 2. Service factor not less than 1.15 at rated load. 3. Insulation shall be Class F or H. 4. WPII type enclosures 5. AEGIS Type SGR grounding rings 6. Insulated bearings 7. Vibration not to exceed .15” per second, unfiltered peak 8. Lifting eye lugs, safety factor 5 9. 95.8% minimum efficiency for 350hp, 1200rpm motor per NEMA MG 1-12.6C.

EXECUTION

3.1 INSTALLATION

A. Install pumps in strict accordance with manufacturer's instructions to avoid any stress and misalignment.

B. Fill under base plates of vertical turbine pumps with non-shrinking grout in accordance with manufacturer's recommendation and Hydraulic Institute Standards.

C. Where pump connection size and indicated line sizes are not identical, provide necessary concentric reducers/increasers for vertical piping at pump connection and eccentric reducers/increasers for horizontal piping at pump connection. Install eccentric reducers/increasers with top of pipe level. Valves and piping specialties shall be full line size as indicated on drawings.

D. Provide full size piping with ball valve from stuffing box to basin.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Pumps Date 08.27.2018 23 2123 - 2 3.2 STARTUP

A. Verify that piping system has been flushed, cleaned and filled.

B. Verify lubrication of motor and pump bearings and lubricate properly in accordance with manufacturer’s recommendation and Section 20 0000, Part 3, under LUBRICATION.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Pumps Date 08.27.2018 23 2123 - 3

INTENTIONALLY BLANK PAGE SECTION 23 2514 CHEMICAL TREATMENT SYSTEMS

GENERAL

1.1 RELATED WORK

A. Section 23 2116 - Pipe and Pipe Fittings

1.2 SUBMITTALS

A. Shop Drawings for each system including, but not limited to, the following: 1. Manufacturer's name and model number 2. Capacities/ratings 3. Chemicals; description of chemicals, its composition and function 4. Operating sequence 5. Composite wiring diagrams 6. Materials of construction 7. Dimensions and weights 8. Manufacturer's installation instructions 9. All other appropriate data

B. Submit overall installation diagram for each system locating chemical injecting points, bleed-off assemblies, water meters, number of tanks and pumps, and field piping.

C. Submit complete make-up water analysis.

D. Submit directly to Owner, Material Safety Data Sheets (MSDS) for all chemicals used in chemical treatment systems. Include with MSDS written notice of Owner's responsibility to notify its employees of the use of those chemicals.

1.3 OPERATION AND MAINTENANCE DATA

A. Provide for services of manufacturer's trained, representative to approve installation, and instruct Owner's representative in operation, testing and maintenance of each system.

B. Include data on chemical feed pumps, meters, and other equipment including spare parts lists, procedures, and treatment programs. Include step-by-step instructions on test and adjust procedures including target concentrations.

1.4 MAINTENANCE SERVICE

A. Provide service and maintenance of treatment systems for 1 yr from date of substantial completion.

B. Provide monthly technical service visits to perform field inspections and make water analysis on site. Detail findings in writing on proper practices, chemical treating requirements, and corrective actions needed. Submit 2 copies of field service report after each visit.

C. Provide laboratory and technical assistance services for warranty period.

D. Provide site inspection of equipment during scheduled shutdown to evaluate success of treatment program. Make recommendations in writing based on these inspections.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Chemical Treatment Systems Date 08.27.2018 23 2514 - 1 1.5 WATER ANALYSIS

A. Submit complete water analysis and results of performance test of each system signed by manufacturer's service representative.

B. Water analysis shall include the following: 1. Cooling Tower (Condenser) Water: a. Total hardness b. Calcium hardness c. "M" alkalinity d. pH e. Total dissolved solids (or conductivity) f. Scale inhibitor g. Microbio count h. Phosphate

1.6 DESIGN CRITERIA

A. Periodic test procedure and chemical shall be recommended for each system.

B. Chemicals shall be suitable for pipe material, fluid medium and intended treatment.

C. Materials of construction for equipment used shall be compatible with water treatment chemicals provided.

D. Treat the following systems: 1. Cooling Tower (Condenser) water

E. Provide initial chemical treatment and equipment for all systems based on complete system fluid analysis, including make-up water, prior to equipment installation.

F. Initial supply of chemicals for chemical treatment of each system shall be adequate for start up and testing period, for the time systems are being operated by Contractor for temporary heating and cooling, and for 1 yr after start-up of system.

G. Chemicals used in condenser water treatment system shall be liquid only and contain no chromates.

H. Provide electrical devices, wiring and conduit in accordance with the applicable sections of Division 26.

1.7 WATER QUALITY REQUIREMENTS

A. Minimum water quality requirements for cooling tower (condenser) water shall be as follows:

1. pH 6.0 to 8.5

2. Hardness as CaCO3 30 to 1000 mg/L(ppm)

3. Alkalinity as CaCO3 <500 mg/L(ppm) 4. TDS <2000 mg/L(ppm) 5. Chlorides <300 mg/L(ppm) 6. Sulfates <500 mg/L(ppm) 7. Total Anaerobic Bacteria Counts ≤ 10 cfu per mL. ≤10 cfu per mL

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Chemical Treatment Systems Date 08.27.2018 23 2514 - 2 PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: 1. Ecolab (formerly Nalco)

2.2 PIPING SYSTEM CLEANER

A. Use cleaning compound to remove organic soil, hydrocarbons, flux, pipe mill varnish, pipe compounds, iron oxide, and like deleterious substances, with or without inhibitor, suitable for system metals without deleterious effects. Cleaner shall not contain phosphate.

2.3 COOLING TOWER (CONDENSER) WATER CHEMICAL TREATMENT

A. Provide complete automatic condenser water chemical treatment system of blended type consisting of chemical feed pumps, water meters, timers, injection assembly, system controller, and automatic control valves, strainers and electrical work.

B. System and chemical treatment shall control scale, corrosion, total dissolved solids, and biological growths.

C. Unless otherwise stated, systems shall proportionately control chemical treatment based on amount of make-up water.

D. pH control system shall be provided if M alkalinity of make-up water exceeds 150 mg/L(ppm).

E. pH control system shall consist of pH sensor, container, acid feed pump, injection assembly and all necessary controls, tubing and accessories. Use non-acid chemicals.

F. Water Meters: 1. Water meters to be Carlon provided by Nalco to match the following sizes and application. a. Makeup water meter shall be sized for a 3” makeup water line. b. Blowdown water meter shall be sized for a 2” blow down line. 2. Bronze, magnetic driven positive displacement or turbine type with electric contacting register and totalization of water flow. 3. Water meter shall have output contact for monitoring by the chemical treatment system.

G. Timers: 1. Automatic reset, adjustable type and electrically operated suitable for 120 V current.

H. Piping and Control Enclosure: 1. Provide factory-wired, NEMA 4X controller in fully piped enclosure. Panel to be configured for ground mounting. Pre-wire controls to numbered terminal strips. Provide laminated plastic nameplates identifying switch function. Include the following with panel: a. Main disconnect switch and indicating lamp b. Corrosion Coupon Rack internal to the enclosure c. Transformer if devices provided require low voltage power 2. Provide all necessary field wiring including pump, make-up line water meter, bleed-off valve and container low level alarm connection. 3. Controller shall have a minimum of 30 day data collection. 4. Conductivity Control: a. Controller shall measure total dissolved solids or conductivity in system water. Conductivity sensor shall consist of epoxy insulated carbon electrodes and shall not require platinizing. Controller shall have meter with visual readout, set point adjustment

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Chemical Treatment Systems Date 08.27.2018 23 2514 - 3 with range between 200 micromhos/cm and 4000 micromhos/cm and red pilot light indicating water conductivity above setpoint. b. Control to open bleed-off solenoid valve when conductivity of cooling water rises above set point of controller. When conductivity falls below set point, valve shall close. 5. Communications interface: Controller shall communicate Modbus TCP IP or Serial RTU via RS485.

I. Miscellaneous: 1. Provide sufficient suction and discharge tubing for the application, 1 m(3’-0”) extended foot valve assembly for chemical container, check valve for discharge line, manual bleed-off line valve, and all valves and strainers as indicated. 2. Provide low-chemical container level alarm for each container.

J. Chemical Feed System: 1. Provide 3 feed pumps suitable to pump 3 types of independent chemicals directly from drum containers. Provide 7 day programmable timers for automatic feeding and alternate biocide feeding. 2. Feed pumps shall be manufacturer’s recommended dosing pumps with pump head, fittings and internal relief valve. Pump shall produce required flow rate at pressure encountered in system and shall be suitable for pumping directly from chemical shipping containers.

2.4 TEST CABINET AND EQUIPMENT

A. Provide complete chemical treatment test equipment and cabinet with appropriate reagent, burettes, and glassware to conduct all tests necessary for determination of proper treatment and blowdown.

B. Provide detailed, written test procedures for each system in manual with plastic protection cover for each page.

C. Test equipment shall include but not be limited to, the following: 1. Cooling Tower (Condenser) Water: a. Conductivity meter b. pH test kit c. Scale inhibitor test kit d. Total alkalinity test kit e. Total hardness test kit f. Calcium hardness test kit

EXECUTION

3.1 ELECTRICAL WIRING

A. Provide all field electrical wiring for system, in metal conduit and in accordance with Division 26 and all applicable Electric Codes.

3.2 APPLICATION OF CHEMICALS

A. Apply initial chemical treatment for each system after systems have been cleaned and flushed.

B. Add, adjust or modify treatment based on results of period tests until turned over to Owner.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Chemical Treatment Systems Date 08.27.2018 23 2514 - 4 3.3 PERFORMANCE TEST

A. Conduct performance test for each system to determine required capacity and performance of chemical treatment system. Refer to Part 1 for water analysis and water quality requirements.

B. Conduct water quality test in all systems weekly and submit test result reports to Mechanical Contractor and Owner until project is turned over to Owner.

C. Conduct water quality tests before and after new work tie-in to existing systems.

3.4 PIPE CLEANING

A. General: 1. Piping systems shall be cleaned before they are used for any purpose except pressure tests, which shall be conducted before cleaning. Add cleaner to closed systems at concentrations as recommended by cleaner manufacturer. Remove water filter elements from system before starting circulation. 2. Use neutralizer agents on recommendation of system cleaner supplier and approval of Architect/Engineer. 3. Remove, clean, and replace strainer screens or filters. 4. Inspect, remove sludge, and flush low points with clean water after cleaning process is completed. 5. New piping system shall not be connected to existing system for operation until flushing and cleaning have been completed. Obtain permission from Owner prior to opening up new work to existing system.

B. Water Systems: 1. Piping systems shall be filled, vented and circulated employing chemical cleaner solution for period of at least 24 hours or more in accordance with manufacturer's recommendations and job site chemical tests. Bring concentration to level, which raises M Alkalinity to manufacturer's recommended value above that for existing water used for fill. Conduct chemical tests to verify levels and submit results to Architect/Engineer. Flush detergent clear with continuous draining and make-up water fill for period of at least 12 hours or more until original M Alkalinity level is achieved (or until pH of system water is within 0.5 pH of make- up water). Conduct chemical tests to verify levels and submit results to Architect/Engineer. When cleaning process is complete, replace strainers or filters and reconnect permanent pumping apparatus.

3.5 COOLING TOWER (CONDENSER) WATER CHEMICAL SYSTEM

A. Mount equipment on wall or floor support. If floor mounted, provide housekeeping pad.

B. Install corporation stop and injection assembly for each chemical feed pump in location and manner indicated. Position nozzle to inject near center of main pipe. Connect piping from chemical container to pump to corporation stop and injection assembly.

C. Install water meter and associated valves in tower make-up line.

D. Install bleed-off solenoid valve or motorized ball valve and water meter if specified in bleed-off line.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Chemical Treatment Systems Date 08.27.2018 23 2514 - 5

INTENTIONALLY BLANK PAGE SECTION 23 6000 PRIMARY COOLING EQUIPMENT

GENERAL

1.1 REFERENCE

A. 26 0533 Raceways and Boxes for Electrical Systems

1.2 SUBMITTALS

A. Shop Drawings for all items in this Section including, but not limited to, the following: 1. Manufacturer's name and model number 2. Identification as referenced in the documents 3. Performance data 4. Sound ratings 5. Materials of construction 6. Dimensions and weights 7. Wiring and interlocking diagrams 8. Electrical short circuit current ratings (SCCR) 9. All other appropriate data

B. Submit with unit Shop Drawings, complete interlocking and line diagrams of all electrical wiring required between machine control panel, starter and temperature control devices.

C. Wiring and interlocking diagram shall include all components of system including, but not limited to chillers, cooling towers, system pumps, automatic valves, flow switches.

D. Prepare diagram specifically for this project. Any incomplete diagrams and shop drawings will be returned without review.

1.3 CERTIFICATES

A. Secure registration and installation permits required by the State and local authorities and complete these requirements before system is placed in operation.

1.4 COORDINATION

A. Intent of plans and Specifications is to provide for complete installation meeting all functional and applicable Code requirements. Design and drawings are based on one of acceptable manufacturers listed in this Specification.

B. Where requirements of equipment provided, differs from equipment on which design is based, this Contractor shall be responsible for coordinating requirements of equipment with other Contractors involved. This Contractor shall be responsible for any additional costs incurred due to such requirements.

C. Equipment manufacturer shall review control sequences and provide all necessary hardware and/or software required for proper operation of the equipment.

1.5 OPERATION AND MAINTENANCE DATA

A. Manufacturer shall provide for services of factory-trained service engineer to supervise and approve installation; start-up, test and adjust unit for proper operation. Manufacturer shall provide a minimum of 8 hours of instruction to Owner's representative in operation and

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Primary Cooling Equipment Date 08.27.2018 23 6000 - 1 maintenance of machine. This shall include furnishing start-up and test log showing all initial settings and readings; signed by manufacturer's service representative. Provide two additional 16 hours training sessions to be scheduled with Owner. Training shall be for up to 8 people.

B. Before acceptance by Owner, manufacturer shall approve, in writing, complete installation, including piping and wiring connections, and proper functioning of all operational and safety controls.

C. Equipment electrical connection points shall be labeled with Listed electrical short circuit current rating (SCCR shall not be less than interrupting rating of upstream overcurrent device as shown on electrical drawings). SCCR shall be marked on equipment control enclosure in accordance with UL508, or other acceptable, accredited third-party testing agency standards.

1.6 EXTENDED WARRANTY

A. Cooling tower manufacturer shall provide a 5-year comprehensive parts and labor warranty against defects in materials and workmanship.

PRODUCTS

2.1 COOLING TOWER (FACTORY-ASSEMBLED, INDUCED-DRAFT CROSSFLOW TYPE)

A. Provide factory-assembled induced draft, vertical discharge, crossflow type cooling towers where shown.

B. Manufacturers: Baltimore Air Coil or Marley with capacity and operating characteristics as scheduled.

C. Cooling tower thermal performance shall be certified by Cooling Tower Institute (CTI) in accordance with CTI Certification Standard STD-201.

D. Tower shall operate against no external static pressure.

E. Structure and Casing: 1. Steel panels and structural elements shall be constructed of 304 stainless steel of sufficient thickness. 2. The tower structure, anchorage, and all its components shall be designed by licensed professional engineers per the international building code. Wind loading and anchorage requirements shall meet the code requirements of an installation located in Tampa, FL 33620.

F. Fan Assemblies, Motors, VFDs: 1. Fan shall be propeller type with cast aluminum blades, cast aluminum or cast-iron hub. 2. VFD shall be provided by cooling tower manufacturer. 3. VFD shall be low harmonic type, UL Listed with PWM technology and IGBT switching in a NEMA 1 enclosure, with integral disconnect. Provide TCI HG7 filter for all VFDs. VFD’s shall be specifically designed for cooling tower service. VFD’s will be installed in NEMA 4X air-conditioned enclosures provided under Specification 26 0533 Raceways and Boxes for Electrical Systems. a. Furnish each VFD with digital communication bus card for BAS use. Card shall communicate via BACnet MS/TP. 4. Motor & Drives: a. Base Bid: Baltimore Air Coil cooling tower with direct drive fans.

G. Distribution Basin:

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Primary Cooling Equipment Date 08.27.2018 23 6000 - 2 1. Open gravity type with plastic diffusing type metering orifices. Furnish 304 stainless steel basin covers. 2. The water distribution system shall be equipped with a method to operate under variable flow conditions while maintaining uniform air-side pressure drop through the fill to maximize cooling efficiency and minimize the risk of scale formation. 3. Basin shall be constructed of heavy gauge 304 stainless steel.

H. Water Inlet Connection: 1. Single bottom flanged inlet connection per tower cell with balancing chamber to provide equal flow to distribution basins without flow balancing valves.

I. Collection Basins: 1. One piece welded or bolted design with bottom outlet. Outlet shall be offset from centerline on outboard cells to allow water to drain to concrete sump below. 2. An equalizing line will not be required. The multiple cells will discharge to a common concrete sump. 3. Basin shall be constructed of heavy gauge 304 stainless steel.

J. Fill and Drift Eliminators and Louvers: 1. Fill and drift eliminator shall be noncorrosive, nonferrous polyvinyl chloride (PVC). Fill shall be noncombustible with flame spread rating of no more than 25 per ASTM E84. Vertical sheet fill material shall be adequately reinforced to prevent sagging. 2. Construct drift eliminators of polyvinyl chloride (PVC) limiting drift loss to 0.005% of design flow rate. 3. Louvers to be fiberglass reinforced polyester (FRP) or PVC with stainless steel wire air inlet screens.

K. Access and Safety: 1. Furnish access doors at each end of tower assemblies for access to eliminator and plenum section. 2. Furnish heavy gauge, 304 stainless steel wire, grille type fan guard over each fan cylinder. 3. Furnish aluminum ladder, safety cage, and handrail system constructed in accordance with OSHA Standards. Ladders shall be located at opposite ends of the cooling tower system and be equipped with self-closing safety gates at the guardrail level of the ladder. 4. Refer to floor plan drawings for ladder locations. 5. Ladder shall have sufficient length for service. Provide a ladder extension for connection to the foot of the ladder attached to the tower casing. Contractor shall coordinate length required to extend to grade. 6. Furnish internal walkway which extends from one access door to the opposite access door. The supporting structure and walkway surface shall be 304 stainless steel with the top of the walkway at or above the cold water basin overflow level. The walkway shall be a minimum of 36” wide. 7. Furnish internal equipment access platform and ladder. Provide platform with an OSHA compliant guardrail system constructed of 304 stainless steel.

L. Hardware and Finish: 1. Tower hardware and steel shall be 304 stainless steel finish.

M. Accessory Equipment: 1. Furnish unit with vibration cutout switch mounted to fan support framework. Switch shall shut off fan motor when subject to excessive vibration.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Primary Cooling Equipment Date 08.27.2018 23 6000 - 3 EXECUTION

3.1 INSTALLATION

A. Install equipment as shown on drawings, and in accordance with manufacturer's installation instructions.

B. Install all necessary auxiliary water piping, control devices, and drain and vent piping as shown and required by units.

3.2 VIBRATION TEST

A. Vibration shall be measured on site by independent third party testing agency obtained by cooling tower manufacturer. Submit name of third party testing agency to Owner for review and comments. Measured vibration shall not be more than the following:

Fan Speed Maximum Vibration Maximum Vibration (rpm) Displacement Velocity 100 - 200 0.25 mm(10.0 mils) 2.03 mm(0.080”)/sec. 200 - 300 0.15 mm(6.0 mils) 2.03 mm(0.080”)/sec. 300 - 400 0.10 mm(4.0 mils) 2.03 mm(0.080”)/sec.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Primary Cooling Equipment Date 08.27.2018 23 6000 - 4 SECTION 26 0000 GENERAL ELECTRICAL REQUIREMENTS

PART 1 – GENERAL

1.1 SUMMARY

A. This Section includes general electrical requirements for all projects.

1.2 PERMITS AND INSPECTIONS

A. Follow USF Building Code Administrator (BCA) requirements for permitting and scheduling inspections. Coordinate with USF BCA department.

B. Minor Projects - Contractor is responsible for all permitting and inspecting fees.

1.3 COORDINATION

A. Visit the site included in the scope of work to ascertain existing conditions. Verify all dimensions and locations before proceeding with work in the area and prior to purchasing equipment.

B. Review and coordinate between all construction documents, all project specifications, and all sections in USF Design and Construction Guidelines. Notify USF Project Manager of conflicts or discrepancies prior to proceeding with work.

C. Locate all underground utilities required by the Sunshine Law prior to proceeding with work. Contact USF Project Manager to obtain latest USF Campus Utilities Map for the area in scope of work prior to proceeding.

1.4 SITE

A. All existing utilities shall remain in place unless otherwise noted on the contract documents.

B. Contractor shall restore back to original installation primary gear, primary feeders, utilities, irrigation, etc. damaged by the contractor in the area of demolition or construction.

C. Provide an erosion control plan addressing prevention, control, and abatement of water pollution to USF Project Manager for approval prior to proceeding with work.

D. Conduit trenches shall be backfilled completely to provide safe crossing by the end of work day or whenever the work zone becomes inactive.

E. Contractor shall develop site construction plan indicating all existing equipment and underground utilities using ground penetrating radar. All underground work, digging, and trenching shall be coordinated with USF Physical Plant Department prior to proceeding. Contractor shall not rely on multiple locates from USF Physical Plant Department once the site is disturbed by the site contractor or any sub-contractors.

F. Areas where work is performed shall be kept clean of debris and materials and shall be cleaned at the end of each work day. Contractor is responsible to secure all tools and materials at all times.

G. Adhere to USF Tagout Policy when servicing or working on electrical systems.

H. Abandoned Raceways: 1. Remove cables.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents General Electrical Requirements Date 08.27.2018 26 0000 - 1 2. Cut abandoned raceway at horizontal level (before turn up) and cap (do not use tape – use existing conduit type cap). 3. Paint cap red. 4. Indicate location on record (as-built) documents.

1.5 WARRANTY

A. Contractor shall provide minimum 1 year warranty for all labor and materials, whether included or not included by equipment manufacturers. Contractor shall replace defective materials during the first year of warranty without additional compensation from USF.

B. Manufacturer warranties greater than 1 year, or where lengthier warranties are required in the project documents, or in USF Design and Construction Guidelines shall extend the standard 1 year warranty.

C. Warranty period shall begin on date of substantial completion.

1.6 MISCELLANEOUS

A. Branch Circuits: No more than 6 current carrying conductors (3 circuits) shall be installed in any one raceway. 6 current carrying conductors shall consist of 3 circuit conductors and 3 neutral conductors. Provide dedicated neutrals for multiwire branch circuits for compliance with NEC 210.4.

1.7 PROJECT CLOSE OUT

A. Provide record documents (as-builts) per USF FPC requirements. Coordinate with USF Project Manager.

PART 2 -- PRODUCTS (Not Used)

PART 3 -- EXECUTION (Not Used)

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents General Electrical Requirements Date 08.27.2018 26 0000 - 2 SECTION 26 0519 LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS

PART 1 – GENERAL

1.1 SUMMARY

A. This Section includes the following: 1. Wires and cables rated 600 Volt and less. 2. Connectors, splices, and terminations rated 600 Volt and less.

1.2 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.

B. Comply with most recently adopted NFPA 70.

PART 2 – PRODUCTS

2.1 CONDUCTORS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. Alan Wire. 2. Encore Wire Corporation. 3. Okonite Company. 4. Southwire Company.

B. Conductors shall be Copper: Comply with NEMA WC 70. Aluminum conductors are not approved.

C. Conductor Insulation: Type THHN/THWN. Color coding shall be employed throughout entire length of conductor for all conductor sizes. Phase taping is not allowed.

D. Use of MC Cable is not approved. Exceptions shall be submitted for UFS Facilities Planning and Construction and USF Physical Plant Department approval.

2.2 CONNECTORS AND SPLICES

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. Hubbell Power Systems, Inc. 2. O-Z/Gedney; EGS Electrical Group LLC. 3. Polaris Electrical Connectors. 4. Ideal Wire Connectors. 5. ILSCO 6. Tyco Electronics 7. Raychem

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Low-Voltage Electrical Power Conductors Date 08.27.2018 26 0519 - 1 B. Description: Factory-fabricated connectors and splices of size, ampacity rating, material, type, and class for application and service indicated.

C. Connectors and splices in exterior in-ground handholes shall be Raychem GHFC H Frame weatherproof closures UL listed for the application. Ideal weatherproof connectors are acceptable for terminating single conductors, or for conductor sizes less than #6 AWG. Use RAYCHEM GHFC H Frame closures for two or more conductors larger than #8 AWG.

D. Provide lugs for terminating service entrance conductors to USF primary transformers. Lugs shall be multiple lug kit, dual rated, mechanical lugs, double screw on each conductor. Conductor range shall be 750 KCMIL – 1/0 AWG. Provide 2 spare lugs for each phase and neutral. Mounting hardware shall be stainless steel. Provide lock washer and flat washer at nut and flat washer at bolt head. Coordinate requirements with and submit lugs submittals to USF Project Manager and USF Physical Plant Department. Service entrance conductors for new services shall be no smaller than 1/0 AWG.

PART 3 – EXECUTION

3.1 CONDUCTOR MATERIAL APPLICATIONS

A. Feeders: Solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger. Coordinate minimum allowable feeder size for the intended installation with USF Project Manager prior to design.

B. Branch Circuits: Solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger. Minimum conductor size No. 12 AWG.

3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS AND WIRING METHODS

A. Feeders: Type THHN-THWN, single conductors in raceway.

B. Branch Circuits: Type THHN-THWN, single conductors in raceway.

3.3 INSTALLATION OF CONDUCTORS

A. Use manufacturer-approved pulling compound or lubricant where necessary; compound used must not deteriorate conductor or insulation. Do not exceed manufacturer's recommended maximum pulling tensions and sidewall pressure values.

B. Use pulling means such as fish tape, cable, rope, and basket-weave wire/cable grips that will not damage cables or raceway.

C. Identify and color-code conductors and cables according to Division 26 Section "Identification for Electrical Systems”.

D. Tighten electrical connectors and terminals according to manufacturer's published torque- tightening values. If manufacturer's torque values are not indicated, use those specified in UL 486A and UL 486B.

E. Make splices and taps that are compatible with conductor material and that possess equivalent or better mechanical strength and insulation ratings than unspliced conductors. Service entrance and panel feeders shall not be spliced.

F. Wiring at Outlets: Install conductors at each outlet, with at least 6 inches of slack.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Low-Voltage Electrical Power Conductors Date 08.27.2018 26 0519 - 2 SECTION 26 0526 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

GENERAL

1.1 SUMMARY

A. Section Includes: Grounding systems and equipment.

1.2 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70.

B. Comply with UL 467 for grounding and bonding materials and equipment.

PRODUCTS

2.1 CONDUCTORS

A. Insulated Conductors: Copper wire insulated for 600 Volt unless otherwise required by applicable code or authorities having jurisdiction.

B. Equipment Ground Conductors: Insulated with green colored insulation.

2.2 CONNECTORS

A. Listed and labeled by an NRTL acceptable to authorities having jurisdiction for applications in which used and for specific types, sizes, and combinations of conductors and other items connected.

B. Bolted Connectors for Pipes: Copper or copper alloy, U clamp type, sized for the pipe and conductor, with at least two bolts.

C. Bolted connectors below grade or in ground handholes. 1. Pipe and Rod Connectors: U clamp type, sized for pipe and conductor. Clamp shall be copper or brass and UL listed for direct burial.

2.3 GROUNDING ELECTRODES

A. Ground Rods: Copper-clad, sectional length; 3/4 inch diameter by 10 feet long each. Provide additional lengths in 10’ sections to achieve specified minimum resistance to ground, measured in ohms, at separately derived service grounding systems.

EXECUTION

3.1 APPLICATIONS

A. Conductors: Provide solid conductor for 4 AWG and smaller, and stranded conductors for 3 AWG and larger.

B. Underground Grounding Conductors: Provide copper conductor, size per code but not smaller than 1/0 AWG, bury at least 24 inches below grade.

C. Connections to Structural Steel: Welded connectors.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Grounding and Bonding for Electrical Systems Date 08.27.2018 26 0526 - 1 3.2 EQUIPMENT GROUNDING

A. Provide insulated equipment grounding conductors in all raceways.

B. Transformers: Bond XO to driven ground rod and metal underground condenser water pipe. Transformer XO bond grounding system shall be in accordance with NEC Handbook, Exhibit 250.13.

C. Transformer ground lug shall be multiple lug kit to accommodate the number of connections.

D. Double wire on lug is not acceptable.

E. All feeder metallic conduits and flexible metal conduits connections to panel cabinets, equipment cabinets, transformer enclosures, etc. shall be provided with grounding bushings.

3.3 INSTALLATION

A. Ground Rods: Drive rods until tops are 6” inches above bottom of inspection well.

B. Inspection Wells: Provide inspection well for the separately derived grounding system driven rod. 1. Subject to vehicular traffic including maintenance vehicles: Harger traffic rated, GAW121212HD with heavy duty top. 2. Color shall be gray or green and labeled “Ground”. 3. Bolts shall be stainless steel. 4. Provide gravel base, Stone 57 or similar. Crushed concrete or pea gravel is not acceptable. 5. Provide additional gravel inside inspection well to allow proper drainage. 6. Ground rod connection shall be above gravel base for easy inspection.

3.4 FIELD QUALITY CONTROL

A. Perform the following tests and inspections and prepare test reports: 1. After installing grounding system but before permanent electrical circuits have been energized, test for compliance with requirements. 2. Inspect physical and mechanical condition. Verify tightness of accessible, bolted, electrical connections with a calibrated torque wrench according to manufacturer's written instructions. 3. Test completed grounding system at each service enclosure grounding terminal, and at driven ground rods inspection wells. 4. Test shall be fall-of-potential method using megohmeter.

B. Report measured ground resistances that exceed 5 ohms.

C. Excessive Ground Resistance: If resistance to ground exceeds 5 ohms, provide additional driven grounding rods until the measured ground resistance does not exceed 5 ohms.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Grounding and Bonding for Electrical Systems Date 08.27.2018 26 0526 - 2 SECTION 26 0529 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

GENERAL

1.1 SUMMARY

A. Section includes: 1. Hangers and supports for electrical equipment and systems.

1.2 PERFORMANCE REQUIREMENTS

A. Design supports for multiple raceways capable of supporting combined weight of supported systems and its contents.

B. Design equipment supports capable of supporting combined operating weight of supported equipment and connected systems and components.

C. Rated Strength: Adequate in tension, shear, and pullout force to resist maximum loads calculated or imposed.

1.3 QUALITY ASSURANCE

A. Welding: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural Welding Code - Steel."

B. Comply with NFPA 70.

PRODUCTS

2.1 SUPPORT, ANCHORAGE, AND ATTACHMENT COMPONENTS

A. Stainless Steel Slotted Support Systems: Comply with MFMA-4, factory-fabricated components for field assembly. 1. Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. Allied Tube & Conduit. b. Cooper B-Line, Inc.; a division of Cooper Industries. c. ERICO International Corporation. d. GS Metals Corp. e. Thomas & Betts Corporation. f. Unistrut; Tyco International, Ltd. g. Wesanco, Inc. h. Kindorf. 2. 304 Stainless Steel 3. Channel Dimensions: Selected for applicable load criteria. 4. Exterior mounted channel: stainless steel or aluminum.

B. Raceway and Cable Supports: As described in NECA 1 and NECA 101.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Hangers and Supports for Electrical Systems Date 08.27.2018 26 0529 - 1 C. Conduit and Cable Support Devices: Stainless steel hangers, clamps, and associated fittings, designed for types and sizes of raceway or cable to be supported.

D. Stainless Steel for Fabricated Supports and Restraints: ASTM A 36/A 36M, plates, shapes, and bars.

E. Mounting, Anchoring, and Attachment Components: Items for fastening electrical items or their supports to concrete surfaces include the following: 1. Mechanical-Expansion Anchors: Insert-wedge-type, stainless steel, for use in hardened Portland cement concrete with tension, shear, and pullout capacities appropriate for supported loads and building materials in which used. a. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1). Cooper B-Line, Inc.; a division of Cooper Industries. 2). Empire Tool and Manufacturing Co., Inc. 3). Hilti Inc. 4). ITW Ramset/Red Head; a division of Illinois Tool Works, Inc. 5). MKT Fastening, LLC. 2. Concrete Inserts: Stainless Steel, slotted support system units similar to MSS Type 18; complying with MFMA-4 or MSS SP-58. 3. Clamps for Attachment to Stainless Steel Structural Elements: MSS SP-58, type suitable for attached structural element. 4. Through Bolts: Structural type, hex head, and high strength. Comply with ASTM A 325. 5. Toggle Bolts: Stainless steel springhead type. 6. Hanger Rods: Threaded stainless steel. 7. Mounting apparatus shall be stainless steel.

EXECUTION

3.1 APPLICATION

A. Comply with NECA 1 and NECA 101 for application of hangers and supports for electrical equipment and systems except if requirements in this Section are stricter.

B. Maximum Support Spacing and Minimum Hanger Rod Size for Raceway: Space supports for EMT, IMC, and RMC as required by NFPA 70. Minimum rod size shall be 1/4 inch in diameter.

C. Multiple Raceways or Cables: Install trapeze-type supports fabricated with stainless steel slotted support system, sized so capacity can be increased by at least 25 percent in future without exceeding specified design load limits. 1. Secure raceways and cables to these supports with two-bolt conduit clamps.

D. Spring-stainless steel clamps designed for supporting single conduits without bolts may be used for 1-1/2-inch and smaller raceways serving branch circuits and communication systems above suspended ceilings and for fastening raceways to trapeze supports.

3.2 SUPPORT INSTALLATION

A. Comply with NECA 1 and NECA 101 for installation requirements except as specified in this Article.

B. Strength of Support Assemblies: Where not indicated, select sizes of components so strength will be adequate to carry present and future static loads within specified loading limits. Minimum static design load used for strength determination shall be weight of supported components plus 200 lb.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Hangers and Supports for Electrical Systems Date 08.27.2018 26 0529 - 2 C. Mounting and Anchorage of Surface-Mounted Equipment and Components: Anchor and fasten electrical items and their supports to building structural elements by the following methods unless otherwise indicated by code: 1. To New Concrete: Bolt to concrete inserts. 2. To Masonry: Approved toggle-type bolts on hollow masonry units and expansion anchor fasteners on solid masonry units. 3. To Existing Concrete: Expansion anchor fasteners. 4. To Steel: Beam clamps (MSS Type 19, 21, 23, 25, or 27) complying with MSS SP-69. 5. To Light Steel: Stainless steel sheet metal screws.

D. Drill holes for expansion anchors in concrete at locations and to depths that avoid reinforcing bars.

E. Supporting raceways via other raceways is not approved.

3.3 EXTERIOR SUPPORTS FOR ELECTRIC PANELS, CABINETS AND EQUIPMENT:

A. Support post shall be concrete sized for the intended installation. Minimum size for mounting panels, disconnect switches, etc. shall be 6” x 6” x 10’ (4’ embedded).

B. Unistrut channel shall be stainless steel.

C. Mounting hardware shall be stainless steel.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Hangers and Supports for Electrical Systems Date 08.27.2018 26 0529 - 3

INTENTIONALLY BLANK PAGE SECTION 26 0533 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS

GENERAL

1.1 SUMMARY

A. Section Includes: 1. Metal conduits, tubing, and fittings. 2. Nonmetal conduits, tubing, and fittings. 3. Metal wireways and auxiliary gutters. 4. Boxes, enclosures, and cabinets.

PRODUCTS

2.1 METAL CONDUITS, TUBING, AND FITTINGS

A. Listing and Labeling: Metal conduits, tubing, and fittings shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

B. Rigid Steel Conduit (RSC): ANSI C80.1, UL 6; heavy wall galvanized steel

C. LFMC (Liquidtight Flexible Metal Conduit): Flexible steel conduit with PVC jacket and complying with UL 360.

D. Fittings (couplings, conduit bodies, connectors and bushings): NEMA FB 1, UL 514B; steel; threaded; connectors with double locknuts and steel insulating bushings, thermoplastic insulating bushings for conduits 2” and smaller; conduit bodies cover: cast steel, with stainless steel screws and neoprene gaskets.

E. Fittings Manufacturers: Cooper Crouse-Hinds; Carlon Electric Products/Prime Conduit Inc.; O- Z/Gedney; Appleton; Hubbell

2.2 NONMETALLIC CONDUITS, TUBING, AND FITTINGS

A. Listing and Labeling: Nonmetallic conduits, tubing, and fittings shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

B. RNC (Rigid Nonmetallic Conduit): Schedule 80 PVC, complying with NEMA TC 2 and UL 651 unless otherwise indicated.

C. Solvent cements and adhesive primers shall have a VOC content of 510 and 550 g/L or less, respectively, when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

2.3 BOXES, ENCLOSURES, AND CABINETS

A. General Requirements for Boxes, Enclosures, and Cabinets: Boxes, enclosures, and cabinets installed in wet locations shall be listed for use in wet locations.

B. Junction Boxes: 1. Manufacturer: Hoffman Catalog No. A606NFSS or approved equal. 2. Nominal Dimensions: 6”H x 6”W x 4”D 3. Shall be NEMA 4X, 16 gauge, 304 stainless steel with hinged cover and stainless steel screw down clamps.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Raceways and Boxes for Electrical Systems Date 08.27.2018 26 0533 - 1 4. Seams continuously welded and ground smooth. 5. Seamless foam-in-place gasket.

C. Cooling Tower Fan VFD and Condenser Water Pump VFD Enclosure with Air Conditioning Units: 1. Manufacturer: Hoffman Catalog No. WS747524SS or approved equal. 2. Free-standing enclosure shall be manufactured from 12 gauge Type 304 stainless steel with seams continuously welded and ground smooth. 3. Nominal dimensions: 74”H x 75”W x 24”D 4. Three point latching operated by Type 316L padlocking stainless steel handles. 5. Seamless foam-in-place one-piece gasket. 6. 20-degree sloped top and door edges. 7. Provide conductive back panel. 8. Air Conditioning Units (Provide two per Cooling Tower Fan VFD Enclosure) a. Manufacturer: SpectraCool Model G521246G102 or approved equal b. Outdoor model without heat package, stainless steel Type 4X. c. Nominal dimensions: 20”W x 54”H x 12”D d. Partially recessed mounting. e. Cooling Capacity: 12000 BTU/Hr (3516 Watts) f. Electrical: 460 Volts, 3.5 Amps, 3 phase

D. Cooling Tower Control Panel Enclosure with Air Conditioning Unit: 1. Manufacturer: Hoffman Catalog No. CSD483616SSST or approved equal. 2. Wall mounted enclosure shall be manufactured from 14 gauge Type 304 stainless steel with seams continuously welded and ground smooth. 3. Nominal dimensions: 48”H x 36”W x 16”D 4. Provide conductive back panel. 5. Stainless steel quarter-turn latches furnished with flush slotted insert. 6. Air Conditioning Unit a. Manufacturer: SpectraCool Model N280416G102 or approved equal. b. Outdoor model without heat package, stainless steel Type 4X. c. Nominal dimensions: 28”H x 12”W x 14”D d. Cooling Capacity: 4000 BTU/Hr (1172 Watts) e. Electrical: 115 Volts, 10 Amps, single phase

EXECUTION

3.1 RACEWAY APPLICATION

A. Outdoors: Apply raceway products as specified below unless otherwise indicated: 1. Exposed Conduit, Aboveground (subject to exposure to sunlight): Schedule 80 PVC. Coat with gray UV resistant paint. 2. Exposed Conduit, Aboveground (not subject to exposure to sunlight, i.e. within cooling tower basin under or within the cooling towers): Schedule 80 PVC. Coordinate with USF Project Manager. 3. Underground Conduit: RSC. Minimum size shall be ¾”. 4. Connection to Vibrating Equipment (Including Transformers, Electric Solenoid, or Motor- Driven Equipment): LFMC approved for the application and subject to USF Project Manager and USF Physical Plant Department approval.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Raceways and Boxes for Electrical Systems Date 08.27.2018 26 0533 - 2 5. Underground Raceways Warning Tapes – 6” wide by 0.004” thick polyethylene film with aluminum coil detectable tape with appropriate label: a. Tape color red with label “Caution – Electrical Line Below”

B. Minimum Raceway Size: 3/4-inch trade size.

C. Raceway Fittings: Compatible with raceways and suitable for use and location. 1. Rigid Steel Conduit: Use threaded rigid steel conduit fittings unless otherwise indicated. Comply with NEMA FB 2.10. 2. Flexible Conduit: Use only fittings listed for use with flexible conduit. Comply with NEMA FB 2.20.

D. Do not install nonmetallic conduit where ambient temperature exceeds 120 deg F.

3.2 INSTALLATION

A. Comply with NECA 1 and NECA 101 for installation requirements except where requirements on Drawings or in this article are stricter.

B. Comply with requirements in Division 26 Section "Hangers and Supports for Electrical Systems" for hangers and supports.

C. Arrange stub-ups so curved portions of bends are not visible above grade.

D. Install no more than the equivalent of three 90-degree bends in any conduit. Support within 12 inches of changes in direction.

E. Install conduits (concealed or exposed) parallel or perpendicular to major structural elements.

F. Support conduit within 12 inches of enclosures to which attached.

G. Threaded Conduit Joints, Exposed to Wet, Damp, Corrosive, or Outdoor Conditions: Apply listed compound to threads of raceway and fittings before making up joints. Follow compound manufacturer's written instructions.

H. Raceway Terminations at Locations Subject to Moisture or Vibration: Use insulating bushings to protect conductors including conductors smaller than No. 4 AWG.

I. Terminate threaded conduits into threaded hubs or with locknuts on inside and outside of boxes or cabinets. Install bushings on conduits 3/4 to 1-1/4-inch trade size and insulated throat metal bushings on 1-1/2-inch trade size and larger conduits terminated with locknuts.

J. Install pull wires in empty raceways. Use polypropylene or monofilament plastic line with not less than 200-lb tensile strength. Leave at least 24 inches of slack at each end of pull wire. Cap underground raceways designated as spare above grade alongside raceways in use. Label all spare conduits with origin.

K. Surface Raceways: 1. Install surface raceway with a minimum 2-inch radius control at bend points. 2. Secure surface raceway with screws or other anchor-type devices at intervals not exceeding 48 inches and with no less than two supports per straight raceway section. Support surface raceway according to manufacturer's written instructions. Tape and glue are not acceptable support methods.

L. Flexible Conduit Connections: Comply with NEMA RV 3. Use a maximum of 72 inches of flexible conduit for recessed and semi-recessed luminaires, equipment subject to vibration, noise transmission, or movement; and for transformers and motors.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Raceways and Boxes for Electrical Systems Date 08.27.2018 26 0533 - 3 3.3 INSTALLATION OF UNDERGROUND CONDUIT

A. Direct-Buried Conduit: 1. Excavate trench bottom to provide firm and uniform support for conduit. 2. After installing conduit, backfill and compact. Start at tie-in point, and work toward end of conduit run, leaving conduit at end of run free to move with expansion and contraction as temperature changes during this process. Firmly hand tamped backfill around conduit to provide maximum supporting strength. After placing controlled backfill to within 12 inches of finished grade, make final conduit connection at end of run and complete backfilling with normal compaction. 3. Underground Warning Tape: Provide underground warning tape 24” above raceway, or 12” below grade if conduit is buried 24” below grade. 4. Electrical branch circuit raceways shall have minimum of 36” cover (burial depth).

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Raceways and Boxes for Electrical Systems Date 08.27.2018 26 0533 - 4 SECTION 26 0553 IDENTIFICATION FOR ELECTRICAL SYSTEMS

GENERAL

1.1 SUMMARY

A. Section Includes: 1. Identification for raceways. 2. Identification for conductors. 3. Underground-line warning tape. 4. Warning labels and signs. 5. Instruction signs. 6. Equipment identification labels. 7. Miscellaneous identification products.

1.2 ACTION SUBMITTALS

A. Product Data: For each electrical identification product indicated.

B. Provide sample of each label for approval prior to ordering materials upon USF Project Manager request.

1.3 QUALITY ASSURANCE

A. Comply with ANSI A13.1.

B. Comply with NFPA 70.

C. Comply with 29 CFR 1910.144 and 29 CFR 1910.145.

D. Comply with ANSI Z535.4 for safety signs and labels.

E. Adhesive-attached labeling materials, including label stocks, laminating adhesives, and inks used by label printers, shall comply with UL 969.

PRODUCTS

2.1 CONDUCTOR IDENTIFICATION MATERIALS

A. Color-Coding for conductors shall be consistent throughout entire length. Phase tape color coding is not acceptable. Applies to feeders’ conductors and branch circuit conductors. Color coding shall be:

Voltage Phase A Phase B Phase C Neutral 277/480 Brown Orange Yellow Gray 120/208 Black Red Blue White

2.2 UNDERGROUND-LINE WARNING TAPE

A. Provide warning tape to identify and locate underground electrical utility lines. 1. Printing on tape shall be permanent and shall not be damaged by burial operations. 2. Tape material and ink shall be chemically inert, and not subject to degrading when exposed to acids, alkalis, and other destructive substances commonly found in soils.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Identification for Electrical Systems Date 08.27.2018 26 0553 - 1 B. Color and Printing: 1. Comply with ANSI Z535.1 through ANSI Z535.5.

C. Refer to Section 260533 3.1 A 6 for additional requirements.

2.3 EQUIPMENT IDENTIFICATION LABELS

A. Interiors - Self-Adhesive, Engraved, Laminated Acrylic or Melamine Label: Adhesive backed and pop rivet to enclosure, with white letters on a dark-gray background. Minimum letter height shall be ½ inch.

B. Outdoors - Stenciled Legend: In nonfading, waterproof. Adhesive backed and pop rivet to enclosure, seal penetrations with silicone. Minimum letter height shall be ½ inch.

C. Identifications: 1. 277/480 Volt – White background with black letters. 2. 120/208 (120/240) Volt – Black background with white letters. 3. Letters shall be 1/2” high. 4. Each panel shall be labeled with the panel designation, voltage and phase, and source feeding the panel including circuit numbers. 5. Each transformer shall be labeled with the transformer designation and primary source and secondary fed equipment designation. Coordinate with USF Project Manager for labels descriptions. 6. Each Cooling Tower VFD Enclosure shall be labeled with the equipment designation, voltage and phase, and source feeding the equipment including circuit numbers.

2.4 MISCELLANEOUS IDENTIFICATION PRODUCTS

A. Fasteners for Labels and Signs: Self-tapping, stainless-steel screws or stainless-steel machine screws with nuts and flat and lock washers.

EXECUTION

3.1 INSTALLATION

A. Location: Install identification materials and devices at locations for most convenient viewing without interference with operation and maintenance of equipment.

B. Self-Adhesive Identification Products: Clean surfaces before application, using materials and methods recommended by manufacturer of identification device.

C. Underground-Line Warning Tape: Use multiple tapes where width of multiple lines installed in a common trench exceeds 16 inches overall.

D. Label outlet boxes/junction boxes indicating circuits contained therein and source panel, neatly with black permanent marker.

E. Each branch circuit conductor shall be labeled with the panel circuit designated 1” from termination to the circuit breaker with self-adhesive vinyl labels: Preprinted, flexible label laminated with a clear, weather- and chemical-resistant coating and matching wraparound adhesive tape for securing ends of legend label.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Identification for Electrical Systems Date 08.27.2018 26 0553 - 2 SECTION 26 2200 LOW-VOLTAGE TRANSFORMERS

GENERAL

1.1 SUMMARY

A. This Section includes transformer in a NEMA 3R, stainless steel, non-ventilated enclosure.

1.2 ACTION SUBMITTALS

A. Product Data: For each product indicated.

B. Shop Drawings: Indicate dimensions and weights.

1.3 CLOSEOUT SUBMITTALS

A. Operation and maintenance data.

1.4 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.

B. Comply with IEEE C57.12.91, "Test Code for Dry-Type Distribution and Power Transformers."

PRODUCTS

2.1 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements, provide products by the following: 1. ACME Electric Corporation; Power Distribution Products Division. 2. Challenger Electrical Equipment Corp.; a division of Eaton Corp. 3. Eaton Electrical Inc.; Cutler-Hammer Products. 4. General Electric Company. 5. Magnetek Power Electronics Group. 6. Siemens Energy & Automation, Inc. 7. Sola/Hevi-Duty. 8. Square D; Schneider Electric.

2.2 GENERAL TRANSFORMER REQUIREMENTS

A. Description: Factory-assembled and tested, non-ventilated units for 60-Hz service.

B. Core and Coil Assembly: Epoxy-resin encapsulated

C. Coils: Continuous windings without splices except for taps. 1. Internal Coil Connections: Brazed or pressure type.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Low-Voltage Transformers Date 08.27.2018 26 2200 - 1 2. Coil Material: Copper.

2.3 TRANSFORMERS

A. Comply with NEMA ST 20, and list and label as complying with UL 1561.

B. Cores: One leg per phase.

C. Outdoor enclosure Non-ventilated #304 stainless steel, Type 3R. 1. Core and coil shall be encapsulated within resin compound, sealing out moisture and air.

D. Taps: One 5 percent tap above and one 5 percent tap below normal full capacity.

E. Insulation Class: 220 deg C, UL-component-recognized insulation system with a maximum of 150 deg C rise above 40 deg C ambient temperature.

2.4 IDENTIFICATION DEVICES

A. Nameplates: Engraved, laminated-plastic. Nameplates are specified in Division 26 Section "Identification for Electrical Systems”.

EXECUTION

3.1 INSTALLATION

A. Transformer shall be pad mounted: Mount level and plumb.

3.2 FIELD QUALITY CONTROL

A. Perform tests and inspections.

B. Tests and Inspections: 1. Test secondary phase, neutral, and ground to ensure the transformer is connected properly (no floating neutral).

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Low-Voltage Transformers Date 08.27.2018 26 2200 - 2 SECTION 26 2416 PANELBOARDS

GENERAL

1.1 SUMMARY

A. Section includes distribution panelboards and lighting and appliance branch-circuit panelboards.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product indicated.

B. Shop Drawings: For each panelboard and related equipment. 1. Include dimensioned plans, elevations, sections, and details. Show tabulations of installed devices, equipment features, and ratings. 2. Detail enclosure types and details. 3. Detail bus configuration, current, and voltage ratings. 4. Short-circuit current rating of panelboards and overcurrent protective devices. 5. Include evidence of NRTL listing for series rating of installed devices. 6. Detail features, characteristics, ratings, and factory settings of individual overcurrent protective devices and auxiliary components. 7. Include wiring diagrams for power, signal, and control wiring. 8. Include time-current coordination curves for each type and rating of overcurrent protective device included in panelboards.

C. Drawings submissions – provide panel schedules including load summary on the design documents. Panel schedules inserted into the specifications or book format are not acceptable.

1.3 INFORMATIONAL SUBMITTALS

A. Field quality-control reports.

B. Panelboard schedules for installation in panelboards.

1.4 CLOSEOUT SUBMITTALS

A. Operation and maintenance data.

1.5 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

B. Comply with NEMA PB 1.

C. Comply with NFPA 70.

1.6 WARRANTY

A. Manufacturer shall provide standard one- year warranty against defects in materials and workmanship for products specified in this section. Warranty period shall begin on date of substantial completion. Project contractor shall replace defective materials during the one- year warranty without additional compensation from USF.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Panelboards Date 08.27.2018 26 2416 - 1 PRODUCTS

2.1 GENERAL REQUIREMENTS FOR PANELBOARDS

A. Enclosures: - Rated for environmental conditions at installed location. 1. NEMA 3R, stainless steel.

B. Hinged Front Cover: Entire front trim hinged to box and with standard door within hinged trim cover.

C. Directory Card: Provide typewritten directory indicating areas, rooms, and loads being served by each circuit position inside panelboard door, mounted in transparent card holder. Update with new typewritten directory card for all renovations. Handwritten modifications are not acceptable.

D. Phase, Neutral, and Ground Buses: Copper or Tin-plated aluminum.

E. Conductor Connectors: Suitable for use with conductor material and sizes. 1. Material: Tin-plated aluminum. 2. Main and Neutral Lugs: Mechanical type. 3. Ground Lugs and Bus Configured Terminators: Mechanical type.

F. Exterior Located Panelboards: Provide door handles that are lockable with USF standard New Standard padlock. Coordinate with USF Project Manager and USF Physical Plant Department.

G. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. Square D; a brand of Schneider Electric. 2. Eaton Electrical Inc.; Cutler-Hammer Business Unit. 3. General Electric Company; GE Consumer & Industrial - Electrical Distribution. 4. Siemens Energy & Automation, Inc.

2.2 DISTIRBUTION PANELBOARDS

A. Basis of Design: Square D I-line

B. Panelboards: NEMA PB 1, UL 67, circuit breaker type panelboard

C. Copper bus and ground bus

D. Mains shall be circuit breaker construction.

E. Branch Overcurrent Protective Devices: Bolt-on type.

F. Gasketed hinged door, three point latching, secured with flush latch with tumbler lock; keyed alike.

2.3 BRANCH-CIRCUIT PANELBOARDS

A. Panelboards: NEMA PB 1, lighting and appliance branch-circuit type.

B. Mains shall be circuit breaker construction.

C. Branch Overcurrent Protective Devices: Bolt-on type.

D. Doors: Concealed hinges; secured with flush latch with tumbler lock; keyed alike.

2.4 DISCONNECTING AND OVERCURRENT PROTECTIVE DEVICES

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Panelboards Date 08.27.2018 26 2416 - 2 A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. Eaton Electrical Inc.; Cutler-Hammer Business Unit. 2. General Electric Company; GE Consumer & Industrial - Electrical Distribution. 3. Siemens Energy & Automation, Inc. 4. Square D; a brand of Schneider Electric.

B. Molded-Case Circuit Breaker (MCCB): Comply with UL 489 1. Thermal-Magnetic Circuit Breakers: Inverse time-current element for low-level overloads, and instantaneous magnetic trip element for short circuits. Adjustable magnetic trip setting for circuit-breaker frame sizes 250 A and larger. 2. Molded-Case Circuit-Breaker (MCCB) Features and Accessories: a. Standard frame sizes, trip ratings, and number of poles. b. Lugs: Mechanical style, suitable for number, size, trip ratings, and conductor materials. c. Handle Padlocking Device: Fixed attachment for locking circuit-breaker handle in on or off position. d. Handle Clamp: Loose attachment for holding circuit-breaker handle in on position.

C. Disconnecting and overcurrent protection devices shall have a UL Label, factory applied, indicating the device is listed for the service voltage.

2.5 SERVICE ENTRANCE

A. UL 869A 1. Panelboards labeled as suitable for use as service entrance equipment where applicable and must include connection for bonding and grounding of neutral conductor.

2.6 SHORT CIRCUIT CURRENT RATING

A. Each panelboard with minimum short circuit current rating as indicated on drawings.

B. Panelboards marked with their maximum short circuit current rating at supply voltage.

C. Panelboards: Fully rated

EXECUTION

3.1 INSTALLATION

A. Receive, inspect, handle, store and install panelboards and accessories according to NECA 40.

B. Mount top of trim 78 inches above grade.

C. Mount panelboard cabinet plumb and rigid without distortion of box.

D. Install filler plates in unused spaces.

E. Arrange conductors in gutters into groups and bundle and wrap with wire ties.

F. Comply with NECA 1.

3.2 IDENTIFICATION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Panelboards Date 08.27.2018 26 2416 - 3 A. Identify field-installed conductors, interconnecting wiring, and components; provide warning signs complying with Section 26 05 53 Identification for Electrical Systems.

B. Create a directory to indicate installed circuit loads. Obtain approval before installing. Use a computer or typewriter to create directory; handwritten directories are not acceptable.

C. Panelboard Nameplates: Label each panelboard with a nameplate complying with requirements for identification specified in Division 26 Section "Identification for Electrical Systems”.

D. Panelboard Nameplates: Label each panelboard with a factory applied nameplate indicating manufacturer’s name, drawing number, manufacturer location, section number, amperage, voltage, phase, number of wires, short-circuit rating, ampacity interrupting capacity rating, and

3.3 FIELD QUALITY CONTROL

A. Perform tests and inspections.

B. Acceptance Testing Preparation: 1. Test insulation resistance for each panelboard bus, component, connecting supply, feeder, and control circuit. 2. Test continuity of each circuit.

C. Tests and Inspections: 1. Perform each visual and mechanical inspection and electrical test stated in NETA Acceptance Testing Specification. Certify compliance with test parameters. 2. Correct malfunctioning units on-site, where possible, and retest to demonstrate compliance; otherwise, replace with new units and retest.

D. Panelboards will be considered defective if they do not pass tests and inspections.

E. Prepare test and inspection reports including a certified report that identifies panelboards included and that describes scanning results. Include notation of deficiencies detected, remedial action taken, and observations after remedial action. END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Panelboards Date 08.27.2018 26 2416 - 4 SECTION 26 2416.16

DISTRIBUTION PANELBOARDS

PART 1 - GENERAL

1.1 RELATED WORK

A. Section 26 0519 – Low-Voltage Electrical Power Conductors and Cables

B. Section 26 0526 – Grounding and Bonding for Electrical Systems

C. Section 26 0529 – Hangers and Supports for Electrical Systems

D. Section 26 0553 – Identification for Electrical Systems

E. Section 26 4313 – Surge Protective Devices

1.2 REFERENCE

A. Work under this Section is subject to requirements of Contract Documents including General Conditions, Supplementary Conditions, and sections under Division 01 General Requirements.

1.3 DESCRIPTION

A. Section includes circuit breaker type and fusible switch type power distribution panelboards as shown on drawings and as scheduled.

1.4 REFERENCE STANDARDS

A. NECA 407 - Recommended Practice for Installing and Maintaining Panelboards

B. NEMA 250 - Enclosures for Electrical Equipment (1000 Volts Maximum)

C. NEMA AB 1 - Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit Breaker Enclosures

D. NEMA FU 1 - Low-Voltage Cartridge Fuses

E. NEMA KS 1 - Enclosed and Miscellaneous Distribution Equipment Switches (600 Volts Maximum)

F. NEMA PB 1 - Panelboards

G. NEMA PB 1.1 - General Instructions for Proper Installation, Operation, and Maintenance of Panelboards Rated 600 Volts or Less

H. NFPA 70 - National Electrical Code

I. UL 50 - Enclosures for Electrical Equipment

J. UL 67 - Panelboards

K. UL 486A – 486B - Wire Connectors

L. UL 489 - Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit Breaker Enclosures

M. UL 512 - Fuseholders

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Distribution Panelboards Date 08.27.2018 26 2416.16 - 1 N. UL 869A - Reference Standard for Service Equipment

1.5 SUBMITTALS

A. Product Data: 1. Submit catalog data showing specified features of standard products. Eliminate extraneous catalog data.

B. Shop Drawings: 1. Submit for review prior to manufacture. Include complete description, front view, dimensions, voltage, main bus ampacity, circuit breaker [fusible switch] arrangement and sizes, short circuit current rating, and factory settings of individual protective devices. 2. Submit 1/4” scale electrical room floor plans with panelboard locations. 3. Submit UL listing for series rating of installed devices. 4. Submit features, characteristics, ratings, and factory settings of individual overcurrent protective devices and auxiliary components.

C. Partial Submittals: 1. Panelboards shall be submitted for review together. Partial submittals of panelboards are not acceptable and will be rejected.

D. Manufacturer’s Installation Instructions: 1. Indicate application conditions and limitations of use stipulated by product testing agency. Include instructions for storage, handling, protection, examination, preparation, installation, and starting of product.

E. Test Report: 1. Indicate field test and inspection procedures and interpret test results and corrective action taken for compliance with specification requirements.

F. Closeout Submittals: 1. Project Record Documents: a. Record actual locations of panelboards and record actual circuiting arrangements. 2. Operation and Maintenance Data: a. Include manufacturer’s recommended operating instructions, maintenance procedures and intervals, and preventive maintenance instructions. b. Include manufacturer’s written instructions for testing and adjusting overcurrent protective devices. c. Include time-current curves and selectable ranges for each type of overcurrent protective device. d. Include spare parts data listing, source, and current prices of replacement parts and supplies. e. Include manufacturer’s Seismic Qualification Certification and Installation Seismic Qualification Certification.

1.6 QUALITY ASSURANCE

A. Obtain panelboards, overcurrent protective devices, components, and accessories from one source and by a single manufacturer.

B. Regulatory Requirements: 1. Comply with NFPA 70. 2. Furnish products listed and classified by Underwriters Laboratories, Inc., as suitable for purpose specified and indicated.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Distribution Panelboards Date 08.27.2018 26 2416.16 - 2 C. Certifications: 1. Furnish Engineer with manufacturer’s Seismic Qualification Certification: Submit certification that panelboards, overcurrent protective devices, and components will remain [internally intact] [physically intact] to withstand seismic forces defined in Section 26 0548 – Vibration and Seismic Controls for Electrical Systems. Include the following: a. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculations. 2. [Furnish Engineer with Installation Seismic Qualification Certification: Submit certification that panelboards, overcurrent protective devices, accessories, and components will remain in place without separation of any parts when subjected to the seismic forces defined in Section 26 0548 – Vibration and Seismic Controls for Electrical Systems and will be fully operational after the seismic event. Include the following:] 3. [Furnish Engineer with Installation Seismic Qualification Certification: Submit certification that panelboards, overcurrent protective devices, accessories, and components will remain in place without separation of any parts when subjected to the seismic forces defined in Section 26 0548 – Vibration and Seismic Controls for Electrical Systems. Include the following:] a. Detailed description of panelboard anchorage devices and seismic restraints on which the certification is based, and their installation requirements. b. Certification shall bear the seal and signature of an Engineer registered and licensed in the State [Commonwealth] of [XXX].

1.7 DELIVERY, STORAGE, AND HANDLING

A. Store in clean, dry space. Maintain factory wrapping or provide additional canvas or plastic cover to protect from dirt, water, construction debris, and traffic.

B. Comply with NEMA PB 1.1 and manufacturer’s written instructions.

1.8 WARRANTY

A. Refer to Division 01 and Section 26 0000 – General Electrical Requirements for general warranty requirements.

B. Manufacturer shall provide standard 1 yr written warranty against defects in materials and workmanship for products specified in this Section. Warranty period shall begin on date of substantial completion.

1.9 MAINTENANCE

A. Extra Materials: 1. Furnish Owner with two keys per panelboard.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Square D

B. [Cooper Bussmann]

C. General Electric

D. Cutler Hammer

E. Siemens

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Distribution Panelboards Date 08.27.2018 26 2416.16 - 3 2.2 POWER DISTRIBUTION PANELBOARDS

A. NEMA PB 1, UL 67.

B. Fabrication: 1. Factory assembled 2. Individualized breaker [fusible switch] dead-front cover [without door] [with door] [door- in-door construction] 3. Incoming feeder lugs: [copper] [aluminum] conductors 4. Multiple lugs to match number of conductors per phase 5. Sub-feed (double) lugs, or feed-through lugs where indicated 6. Filler plates 7. Wiring terminals for field installed conductors: Pressure wire connectors, except wire-binding screws for #10 AWG or smaller conductors.

C. Panelboard Buses: 1. [Copper] [Aluminum] 2. Ampere rating as scheduled 3. Ground bus: uninsulated, bonded to panelboard cabinet 4. Insulated neutral bus where applicable: 100% [_____%] of phase bus rating

D. Molded-Case Circuit Breakers: 1. NEMA AB 1, UL 489 2. Bolt-on or I-line type, labeled for 75°C copper and aluminum conductors 3. Quick-make, quick-break, with [thermal-magnetic trip] and [electronic (solid-state microprocessor-based) trip]. 4. Equipped with individually insulated, braced, and protected connectors 5. Common internal trip on multi-pole breakers. Handle-ties are not permitted. 6. Ampere rating as scheduled 7. Front face flush with each other 8. Large, permanent, individual circuit numbers affixed to each breaker in uniform position 9. Tripped indication clearly shown by breaker handle taking position between “ON” and “OFF.” 10. Listed as Type HACR for air conditioning equipment circuits 11. Bussing, device mounting hardware, and steel knockouts in dead front where “space” is indicated 12. For 225A frame size and below: thermal-magnetic trip 13. For 250A frame size and above: electronic trip units interchangeable in the field within the frame size and field-adjustable [long time pick-up], [long time delay], [short time pick- up], [short time delay], and [instantaneous] current settings. Each adjustment shall have discrete settings and shall be independent of all other adjustments. 14. [Locks on trip handles where indicated]

E. [Ground Fault Protection of Essential Electrical Systems 1. Ground fault protection shall not be provided for any over current protective devices on load side of essential system transfer switches. 2. Ground fault protection shall not be provided for any over current protection devices between onsite generator units and essential system transfer switches.]

F. Fusible Switches: 1. NEMA KS1, NEMA FU1, UL 512 2. Labeled for 75°C conductors

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Distribution Panelboards Date 08.27.2018 26 2416.16 - 4 3. Quick-make quick-break with visible blades, externally operable handle and dual horsepower ratings. 4. Handles to physically indicate “ON” and “OFF” position. 5. Lockable only in “OFF” position and accept three industrial type heavy-duty padlocks. 6. Covers and handles be interlocked to prevent opening in “ON” position, with means to permit release of interlock. 7. Large permanent individual circuit numbers affixed to each fusible switch in uniform position. 8. Rejection clips for Class R fuses specified. 9. Provisions for Class J or Class L fuses, as applicable. 10. Fuses: Per requirements in Section 26 2813 – Fuses.

G. Cabinet 1. NEMA 250, UL 50 2. NEMA Type 1, Type 3R (outdoor locations) [Type 4X, stainless steel, kitchen areas, (______)] [Type 4, wet and damp indoor locations] [Type XXX, hazardous areas] [______] enclosure. 3. Four-piece front (trim) [flush] [surface] mounted [with door over the front, with concealed self-adjusting trim clamps, and complete with cylinder-type lock and catch except omit door in fusible switch panelboard] [without door with breakers exposed]. 4. Same height matching trim, where two cabinets are mounted adjacent to one another in finished areas. 5. All sections of panelboards have the same size, where oversize cabinets are required for one section of multi-section panelboard. 6. Boxes and fronts made of code-gauge galvanized steel 7. [Manufacturer’s standard gray enamel finish over prime coat] [Manufacturer’s prime coat finish for cabinets mounted in finished areas for field paint to match wall color by others and manufacturer standard gray enamel finish over prime coat for cabinets mounted in unfinished areas. For field painted panels, door hinges shall be concealed inside panel].

2.3 METERS

A. Provide separate metering compartments with digital meter in accordance with Section 26 2713 - Electrical Metering.

2.4 SERVICE ENTRANCE

A. UL 869A

B. Panelboards labeled as suitable for use as service entrance equipment where applicable and must include connection for bonding and grounding of neutral conductor.

C. [Barriers shall be placed such that no uninsulated, ungrounded service busbar or service terminal is exposed to inadvertent contact by persons or maintenance equipment while servicing load terminations.]

2.5 SHORT CIRCUIT CURRENT RATING

A. Each panelboard with minimum short circuit current rating as indicated [on drawings].

B. Panelboards marked with their maximum short circuit current rating at supply voltage.

C. Panelboards: [Fully rated] [Series-rated]. [Series-rated panelboards are not acceptable.]

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Distribution Panelboards Date 08.27.2018 26 2416.16 - 5 2.6 [SURGE PROTECTIVE DEVICES (SPD)

A. [By panelboard manufacturer.][Furnished under 26 4300 – Surge Protective Devices]

B. As indicated on drawings and as scheduled.

C. Per requirements in Section 26 4300 – Surge Protective Devices.]

PART 3 - EXECUTION

3.1 COORDINATION WITH MANUFACTURER

A. Instruct manufacturer about the location of additional wiring gutter space when required, i.e. top, bottom, right, left, or combination.

B. Instruct manufacturer about the location of main lugs or main circuit breaker (i.e., top or bottom feed based on incoming feeder entrance location).

C. Instruct manufacturer to provide multiple lugs where conductors in parallel or sub-feed (double) lugs or feed-through lugs are indicated.

D. Instruct manufacturer on the size of cross-connection cables for panelboards fed via sub-feed (double) lugs or feed-through lugs. Make cable size with ampacity equal to incoming feeder.

E. Verify that “touch-up” paint kit is available for repainting.

F. [Coordinate painting of cabinets in finished areas with work performed under Division 09 - Finishes.]

3.2 EXAMINATION

A. Verify that space indicated for panelboard mounting meets code-required working clearances and dedicated equipment space.

B. Notify Architect/Engineer of any discrepancies prior to submittal of product data and shop drawings.

3.3 INSTALLATION

A. Install panelboards in accordance with NECA 407 and NEMA PB 1.1.

B. Install panelboards plumb and rigid without distortion of box, in accordance with manufacturer's written instructions, and in compliance with recognized industry practices.

C. Panelboard mounting and seismic restraints: 1. Install panelboard anchorage devices and seismic restraints based on design by an Engineer registered and licensed in the State [Commonwealth] of [XXX], and to comply with Section 26 0548 – Vibration and Seismic Controls for Electrical Systems for seismic criteria. 2. Fasten panelboards firmly to walls and structural surfaces, ensuring they are permanently and mechanically anchored. 3. Anchor and fasten panelboards and their supports to building structural elements (wood, concrete, masonry, hollow walls and nonstructural building surfaces) by the methods described in Section 26 0529 – Hangers and Supports for Electrical Systems. 4. Install two rows of steel slotted channel, with a minimum of four attachment points, for each panelboard section. 5. When not located directly on wall, provide support frame of steel slotted channel anchored to floor and ceiling structure.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Distribution Panelboards Date 08.27.2018 26 2416.16 - 6 D. Install top breaker handle a maximum of 6’-7” above finished floor or working platform, with handle in its highest position.

E. Tighten electrical connectors and terminals according to equipment manufacturer's published torque tightening values. Where manufacturer’s torque values are not indicated, use those specified in UL 486A –486B.

F. Install as-built typewritten circuit directory in directory frame (to indicate installed circuit loads before completing load balancing) [affixed to outside cover of each panelboard] [mounted inside each panelboard door]. Include description of connected loads, room number, room name, area, or item served for each branch circuit. Indicate motor names and horsepower as applicable. Cover circuit directory with colorless plastic. [Coordinate with Owner and Architect to ensure that room numbers used in panel directory are final numbers assigned by Owner.]

G. Install engraved plastic nameplates under provisions of Section 26 0553 – Electrical Systems Identification. Attach nameplate to exterior of each panelboard using small, corrosion-resistant metal screws or rivets. Do not use contact adhesive. 1. Indicate panelboard name, amperage, voltage, phase, and number of wires.

H. Label spare circuits as SPARE. Leave spare breakers in OFF position.

I. Room numbers used shall be those used by Owner except as otherwise directed by Architect.

J. Install panelboard in dedicated electrical space per NFPA 70 and as shown on drawings. Coordinate with miscellaneous trades for equipment foreign to the electrical installation to be outside of dedicated electrical space.

K. Install filler plates in unused spaces.

L. Install fuses in fusible switches, per requirements in Section 26 2813 – Fuses.

3.4 CONNECTIONS

A. Ground panelboards according to Section 26 0526 – Grounding and Bonding for Electrical Systems.

B. Connect wiring according to Section 26 0519 – Low-Voltage Electrical Power Conductors and Cables.

3.5 FIELD QUALITY CONTROL

A. Inspect for physical damage, proper alignment, anchorage, and grounding.

B. Test circuit breakers per requirements in Sections 26 0812 – Power Distribution Acceptance Tests and 26 0813 – Power Distribution Acceptance Test Tables.

C. Interpret test results in writing and submit to Engineer.

D. [Check phase-to-phase and phase-to-ground insulation resistance levels prior to energizing panelboards.]

E. [Check panelboards for electrical continuity of circuits and for short-circuits prior to energizing.]

F. [Submit ammeter readings for all panelboard feeders indicating normal operating load and phase balance.]

G. [Balancing Loads: After Substantial Completion, but not more than 2 months after Final Acceptance, conduct load-balancing measurements and make circuit changes as follows:

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Distribution Panelboards Date 08.27.2018 26 2416.16 - 7 1. Perform measurements during period of normal working load as advised by Owner. 2. Perform load-balancing circuit changes outside normal occupancy/working schedule of the facility. Make special arrangements with Owner to avoid disrupting critical 24- hour services, such as fax machines and on-line data processing, computing, transmitting, and receiving equipment. 3. Recheck loads after circuit changes during normal load period. Record all load readings before and after changes and submit test records. 4. Tolerance: Difference exceeding 10% between phase loads, within a panelboard, is not acceptable. 5. Reconnect or redistribute circuits or [circuit breakers] [fusible switches] to achieve balanced condition. Revise circuit directory to reflect circuiting changes required to balance phase loads.]

3.6 REPAINTING

A. Remove paint splatters or other marks from surface of panelboards.

B. Touch-up chips, scratches, or marred finishes to match original finish, using manufacturer- supplied paint kit. Leave remaining paint to Owner.

3.7 ADJUSTING

A. Adjust fronts, covers, hinges, and locks.

B. Circuit Breakers: Set field-adjustable trip settings or change the trip settings recommended by the overcurrent protective device coordination study per Section 26 0573 – Power System Studies.

3.8 CLEANING

A. Clean panelboard interiors and exteriors prior to final inspection. Remove paint splatters and other spots, dirt and debris.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Distribution Panelboards Date 08.27.2018 26 2416.16 - 8 SECTION 26 2816

ENCLOSED SWITCHES AND CIRCUIT BREAKERS

PART 1 - GENERAL

1.1 RELATED WORK

A. Section 26 0519 – Low-Voltage Electrical Power Conductors and Cables

B. Section 26 0526 – Grounding and Bonding for Electrical Systems

C. Section 26 0529 – Hangers and Supports for Electrical Systems

D. Section 26 0553 – Electrical Systems Identification

1.2 DESCRIPTION

A. Section includes fusible and non-fusible disconnect switches and circuit breakers in individual enclosures.

1.3 REFERENCE STANDARDS

A. ANSI//NECA 1 - Standard Practices for Good Workmanship in Electrical Contracting

B. NEMA AB 1 - Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit Breakers Enclosures

C. NEMA KS 1 - Enclosed and Miscellaneous Distribution Equipment Switches (600 Volts Maximum)

D. NFPA 70 - National Electrical Code

E. UL 98 - Enclosed and Dead Front Switches

F. UL 486A - 468B - Wire Connectors

G. UL 489 - Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit Breaker Enclosures

H. UL 869A - Reference Standard for Service Equipment

1.4 SUBMITTALS

A. Product Data: 1. Submit catalog cut sheet indicating voltage, amperage, HP ratings, enclosure type, and dimension, fuse clip features, terminal lugs and all accessories including interlock devices, short circuit current ampere rating and factory settings of individual protective devices.

B. Manufacturer’s Installation Instructions: 1. Indicate application conditions and limitations of use stipulated by product testing agency. Include instructions for storage, handling, protection, examination, preparation, installation, and starting of product.

C. Test Reports: 1. Indicate field test and inspection procedures and interpret test results and corrective action taken for compliance with specification requirements.

D. Closeout Submittals:

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Enclosed Switches and Circuit Breakers Date 08.27.2018 26 2816 - 1 1. Project Record Documents: a. Record actual locations of disconnect switches and ratings of installed fuses. b. Record actual locations and continuous current ratings of enclosed circuit breakers. 2. Operation and Maintenance Data: a. Include manufacturer’s recommended operating instructions, maintenance procedures and intervals, and preventive maintenance instructions. b. Include spare parts data listing, source, and current prices of replacement parts and supplies. c. Include Manufacturer’s Seismic Qualification Certification and Installation Seismic Qualification Certification.

1.5 QUALITY ASSURANCE

A. Obtain disconnect switches and enclosed circuit breakers from one source and by single manufacturer.

B. Regulatory Requirements: 1. Comply with NFPA 70 for components and installation. 2. Furnish products listed and classified by Underwriters Laboratories, Inc., as suitable for purpose specified and indicated.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Store in clean, dry space. Maintain factory wrapping or provide additional canvas or plastic cover to protect from dirt, water, construction debris, and traffic.

B. Comply with manufacturer’s written instructions.

1.7 WARRANTY

A. Refer to Division 01 and Section 26 0000 – General Electrical Requirements for general warranty requirements.

B. Manufacturer shall provide standard 1 yr written warranty against defects in materials and workmanship for products specified in this Section. Warranty period shall begin on date of substantial completion.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Square D

B. General Electric

C. Eaton/Cutler-Hammer

D. Siemens

2.2 DISCONNECT SWITCHES

A. NEMA KS 1, UL 98

B. Load interrupter enclosed knife switch, heavy-duty type.

C. Fusible or non-fusible type as indicated.

D. Switch Interiors:

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Enclosed Switches and Circuit Breakers Date 08.27.2018 26 2816 - 2 1. Switch blades that are visible in "OFF" position when switch door is open. 2. Plated current carrying parts. 3. Removable arc suppressors to permit easy access to line side lugs.

E. Switch Mechanism: 1. Quick-make, quick-break, with visible blades and externally operable handle. 2. Lockable only in “OFF” position and accept three industrial type, heavy-duty padlocks. 3. Dual cover interlock to prevent unauthorized opening of switch door when handle is in "ON" position, and to prevent closing of switch mechanism with door open. 4. Defeater mechanism to bypass interlock. 5. Operating handle integral part of enclosure. 6. Handle to physically indicate "ON" and "OFF" position.

F. Ratings: 1. Ampacity as indicated on drawings. 2. Horsepower rated.

G. Fusible Switches: 1. Rejection clips for Class R fuses specified. 2. Provisions for Class J or Class L fuses, as applicable. 3. Fuses: Per requirements in Section 26 2813 – Fuses.

2.3 ENCLOSED CIRCUIT BREAKERS

A. NEMA AB 1, UL 489.

B. Enclosed molded-case circuit breakers: 1. Tripped indication clearly shown on breaker handle taking position between “ON” and “OFF”. 2. 225A frame size and below: thermal-magnetic trip. 3. 250A frame size and above: electronic (solid-state microprocessor-based) trip units interchangeable in the field within the frame size and field-adjustable long time pick-up, long time delay, short time pick-up, short time delay, and instantaneous current settings. Each adjustment shall have discrete settings and shall be independent of other adjustments. 4. Locks on trip handles where indicated. 5. Molded-case switch in lieu of thermal-magnetic molded-case circuit breaker, where indicated.

C. Breaker Mechanism: 1. Quick-make, quick-break.

D. Ratings: 1. Ampacity as indicated on drawings. 2. Listed as Type HACR for air conditioning equipment circuits. 3. Listed as Type SWD for lighting circuits.

2.4 LUGS

A. Front removable lugs.

B. Labeled for 75°C copper and aluminum conductors.

C. Multiple lugs to match number of conductors per phase.

D. Termination of field installed conductors: Pressure wire connectors, except wire-binding screws for #10 AWG or smaller conductors.

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Enclosed Switches and Circuit Breakers Date 08.27.2018 26 2816 - 3 2.5 ACCESSORIES:

A. Solid neutral assembly, where required.

B. Equipment ground kit.

C. Factory installed fuse puller on fused disconnect switches.

D. One set of normally open (NO) auxiliary contacts, where disconnect switch is installed at a remote motor served by variable frequency drive (VFD).

2.6 ENCLOSURES

A. NEMA KS 1, NEMA AB 1, UL 98, UL 489, as applicable.

B. Type 3R, 304 stainless steel enclosure.

C. Manufacturer’s standard gray enamel finish over prime coat.

D. Surface-mounted.

2.7 SERVICE ENTRANCE

A. UL 869A

B. Switches and circuit breakers identified for use as service entrance equipment are to be labeled for this application, provided with solid neutral assembly and equipment ground bar, and must include connection for bonding and grounding of neutral conductor.

2.8 SHORT CIRCUIT CURRENT RATING

A. Each circuit breaker shall have minimum short circuit current rating as indicated on drawings.

PART 3 - EXECUTION

3.1 COORDINATION WITH MANUFACTURER

A. Instruct manufacturer about the location of incoming lugs, i.e., top or bottom feed based on incoming feeder entrance location.

3.2 EXAMINATION

A. Examine areas and surface to receive disconnect switches and enclosed circuit breakers for compliance with requirements, installation tolerances, and other conditions affecting performance. Proceed with installation only after unsatisfactory conditions have been corrected.

B. Verify that space indicated for disconnect switches and enclosed circuit breakers mounting meets code-required working clearances.

C. Notify Architect/Engineer of any discrepancies prior to submittal of product data and shop drawings.

3.3 INSTALLATION

A. Install disconnect switches and/or enclosed circuit breakers in accordance with ANSI/NECA 1.

B. Install disconnect switches and/or enclosed circuit breakers level and plumb, in accordance with manufacturer’s written instruction.

C. Disconnect switches and enclosed circuit breakers mounting and seismic restraints:

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Enclosed Switches and Circuit Breakers Date 08.27.2018 26 2816 - 4 1. Install two rows of stainless steel slotted channel, with a minimum of four attachment points, for each disconnect switch and enclosed circuit breaker.

D. Do not support disconnect switches and/or enclosed circuit breakers by raceway.

E. Install top disconnect switch and/or enclosed circuit breaker handle a minimum of 3’-6” and maximum of 6’-6” above finished floor.

F. Tighten electrical connectors and terminals according to equipment manufacturer's published torque-tightening values. Where manufacturer’s torque values are not indicated, use those specified in UL 486A - 486B.

G. Install engraved plastic nameplates under provisions of Section 26 0553 – Electrical Systems Identification. Attach nameplate to exterior of each switch and/or enclosed circuit breaker using small stainless steel screws or rivets. 1. Include switch and/or enclosed circuit breaker name, amperage, voltage, phase, and number of wires.

H. Install fuses in fusible switches at job site per requirements in Section 26 2813 – Fuses.

3.4 CONNECTIONS

A. Ground equipment according to Section 26 0526 – Grounding and Bonding for Electrical Systems.

B. Connect wiring according to Section 26 0519 – Low-Voltage Electrical Power Conductors and Cables.

3.5 FIELD QUALITY CONTROL

A. Inspect for physical damage, proper alignment connections, anchorage, and grounding.

B. Correct malfunctioning units on-site and retest to demonstrate compliance. Remove and replace with new units and retest.

3.6 ADJUSTING

A. Circuit Breakers: Set field-adjustable trip settings as directed by engineer.

3.7 CLEANING

A. Vacuum dirt and construction debris from interior and exterior of equipment; do not use compressed air to assist in cleaning.

END OF SECTION

USF CPT Replace Cooling Tower CT-5 Project No. 18182-00 100% Construction Documents Enclosed Switches and Circuit Breakers Date 08.27.2018 26 2816 - 5

INTENTIONALLY BLANK PAGE SECTION 26 4313 SURGE PROTECTIVE DEVICES (SPD’S) FOR LOW-VOLTAGE ELECTRICAL POWER CIRCUITS

GENERAL

1.1 SUMMARY

A. Section includes field-mounted SPD for low-voltage (120 to 600 V) power distribution equipment.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product indicated. Include unit dimensions, rated capacities, operating weights, electrical characteristics, furnished specialties, and accessories.

1.3 INFORMATIONAL SUBMITTALS

A. Field quality-control reports.

B. Warranty information.

C. Drawings: Provide shop drawings indicating mounting provisions, installation instructions, and wiring diagrams.

1.4 CLOSEOUT SUBMITTALS

A. Operation and maintenance data.

1.5 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a testing agency, and marked for intended location and application.

B. Comply with IEEE C62.41.2 and test devices according to IEEE C62.45.

C. Comply with NEMA LS 1.

D. Comply with UL 1283 and UL 1449.

E. Comply with NFPA 70.

1.6 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of surge suppressors that fail in materials or workmanship within specified warranty period. 1. Warranty Period: Five years from date of Substantial Completion.

PRODUCTS

2.1 PANELBOARD SUPPRESSORS – Type 2.

Project No. 18182-00 USF CPT Replace Cooling Tower CT-5 Surge Protective Devices (SPD’s) 100% Construction Documents for Low-Voltage Electrical Power Circuits Date 08.27.2018 26 4313 - 1 A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. Advanced Protection Technologies Inc. (APT). 2. Current Technology Inc.; Danaher Power Solutions. 3. LEA International. 4. Leviton Mfg. Company Inc. 5. PQ Protection.

B. Surge Protection Devices: 1. LED indicator lights for power and protection status. 2. Fabrication using bolted compression lugs for internal wiring. 3. Redundant suppression circuits. 4. Distribution panels and panelboards shall be arranged with wire connections to phase buses, neutral bus, and ground bus via panel mounted 30 Amp, 3 Pole, circuit breaker. 5. Enclosed circuit breakers shall be arranged with wire connections to phase buses, neutral bus, and ground bus via lugs on load side of disconnect. 6. LED indicator lights for power and protection status.

C. Peak Single-Impulse Surge Current Rating: 100 kA per mode/200 kA per phase.

D. Protection modes and UL 1449 SVR for grounded wye circuits with 208Y/120V, 3- phase, 4-wire circuits shall be as follows: 1. Line to Neutral: 400V for 208Y/120V. 2. Line to Ground: 400V for 208Y/120V. 3. Neutral to Ground: 400V for 208Y/120 V.

E. Protection modes and UL 1449 SVR for 480 V, 3-phase, 3-wire, delta circuits shall be as follows: 1. Line to Line: 2000 V for 480 V. 2. Line to Ground: 1500 V for 480 V.

F. Units integral to panelboards are not allowed.

2.2 ENCLOSURES

A. Outdoor Enclosures: NEMA 250 Type 3R.

EXECUTION

3.1 INSTALLATION

A. Provide Type 2 TVSS devices for distribution panels, panelboards, and enclosed circuit breakers with conductors between suppressor and points of attachment as short and straight as possible. Do not exceed manufacturer's recommended lead length. 1. Provide multiple pole, 30-A circuit breaker as a dedicated disconnecting means for Type 2 TVSS as shown in panel schedules.

3.2 FIELD QUALITY CONTROL

Project No. 18182-00 USF CPT Replace Cooling Tower CT-5 Surge Protective Devices (SPD’s) 100% Construction Documents for Low-Voltage Electrical Power Circuits Date 08.27.2018 26 4313 - 2 A. Perform tests and inspections. 1. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect components, assemblies, and equipment installations, including connections, and to assist in testing.

B. Tests and Inspections: 1. Perform each visual and mechanical inspection and electrical test stated in NETA ATS, "Surge Arresters, Low-Voltage Surge Protection Devices" Section. Certify compliance with test parameters. 2. After installing TVSS devices but before electrical circuitry has been energized, test for compliance with requirements. 3. Complete startup checks according to manufacturer's written instructions.

C. TVSS device will be considered defective if it does not pass tests and inspections.

D. Prepare test and inspection reports.

3.3 STARTUP SERVICE

A. Do not energize or connect service entrance equipment or panelboards to their sources until TVSS devices are installed and connected.

B. Do not perform insulation resistance tests of the distribution wiring equipment with the TVSS installed. Disconnect before conducting insulation resistance tests, and reconnect immediately after the testing is over.

3.4 DEMONSTRATION

A. Engage a factory-authorized service representative to train USF Physical Plant Department maintenance personnel to maintain TVSS devices.

END OF SECTION

Project No. 18182-00 USF CPT Replace Cooling Tower CT-5 Surge Protective Devices (SPD’s) 100% Construction Documents for Low-Voltage Electrical Power Circuits Date 08.27.2018 26 4313 - 3

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