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Section 15500 Hydronic Systems and Equipment

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Section 15500 Hydronic Systems and Equipment PROJECT NO. ####### PROJECT TITLE CONTRACT TITLE SECTION 15500 HYDRONIC SYSTEMS AND EQUIPMENT PART I - GENERAL 1.01 WORK INCLUDED A. Types of hydronic specialties specified in this section include the following: 1. Vent Valves 2. Air Separators 3. Expansion Tanks 4. Chemical Feeders 5. Hydronic Piping 6. Water Relief Valves 1.02 QUALITY ASSURANCE A. Manufacturer's Qualifications: Firms regularly engaged in manufacture of hydronic piping products of types, materials, and sizes required, whose products have been in satisfactory use in similar service for not less than five (5) years. B. Codes and Standards: 1. ASME Compliance: Fabricate and install hydronic piping in accordance with ASME B31.9 "Building Services Piping." 2. CMC Compliance: Fabricate and install hydronic piping in accordance with IAPMO "Uniform Mechanical Code." 3. Welding materials and labor shall conform to ASME Code and applicable state labor regulations. 4. Welders shall be fully qualified and certified by a state approved welding bureau. Each welder shall identify his work with a marking stamped on each weld joint of pipe. 5. Copper brazing (including Medical Gas -Medical vacuum pipe and fittings: a. Certified yearly by P.I.P.E. or agency that meets AMS B2.2-85 brazing procedures, American Welding Society Standards. b. Show current brazing certificates upon request. Certification shall be copied and kept on file by Contractor for duration of the job and provided to University's Representative to be kept on file by University's Plant Operations and Maintenance Plumbing Supervisor. 15500 - 1 HYDRONIC SYSTEMS AND EQUIPMENT 07/2014 Edition PROJECT NO. ####### PROJECT TITLE CONTRACT TITLE 1.03 SUBMITTALS A. Product Data: Submit manufacturer's technical product data and installation instructions for each type of hydronic specialty. B. Record Drawings: At project closeout, submit Record Drawings of installed hydronic piping and piping products in accordance with requirements of Division 1. C. Maintenance Data: Submit maintenance data and parts lists for hydronic piping materials and products. Include this data, product data, Shop Drawings, and Record Drawings in maintenance manual in accordance with requirements of Division 1. PART II - PRODUCTS 2.01 MATERIALS A. Provide piping materials and factory-fabricated piping products of sizes, types, pressure ratings, temperature ratings, and capacities as indicated. Provide materials and products complying with ASME B31.9 Code for Building Services Piping where applicable, base pressure rating on hydronic piping systems maximum design pressures or as specified. Provide sizes and types matching piping and equipment connections; provide fittings of materials which match pipe materials used in hydronic piping systems. 2.02 BASIC PIPES AND PIPE FITTINGS A. Provide pipes and pipe fittings complying with Division 15 Basic Mechanical Materials and Methods section "Pipes and Pipe Fittings," in accordance with the following listing: 1. Chilled Water Piping: 2” and smaller, Copper tube; Type L, hard-drawn temper: wrought-copper fittings. Solder joints 1 ¼” and smaller, brazed joints 1 ½ and larger. Connections to threaded equipment, valves, etc. shall be copper threaded or flanged fittings. 2. Chilled Water Piping over 2” , ASTM A53 or ASTM A120 black steel, Schedule 40, with standard-weight, full-radius, butt-welding fittings and 150-lb, forged-steel, weld-neck type flanges. Connections to threaded equipment, valves, etc. shall be made with 150-lb, cast-iron, threaded fittings. Slip-on flanges will be permitted where space is limited with prior approval of the University's Representative. All slip-on flanges shall be back-welded. Piping over 2” can also be brazed copper, type L. 3. Heating Hot Water Piping: 2” and smaller, Copper tube Type L, hard-drawn temper: wrought copper fittings, brazed joints. Connections to threaded equipment, valves, etc. shall be copper threaded or flanged fittings. Connection to coils may be solder joints. 4. Heating Hot Water Piping: over 2”, ASTM A53 or ASTM A120 black steel Schedule 40. On pipe sizes 2” and smaller, 150-lb, malleable threaded fittings. On pipe sizes 2-½” and larger, standard-weight, full-radius, butt- welding fittings and weld neck flanges, except slip-on flanges as specified for chilled water piping. Connections to threaded equipment, valves, etc. shall be made with cast- iron, threaded fittings. Piping over 2” can also be brazed copper, type L 5. Condenser Water Piping: ASTM A53 or ASTM A120 black steel, Schedule 40, with standard-weight, full-radius, butt-welding fittings and weld neck flanges. 15500 - 2 HYDRONIC SYSTEMS AND EQUIPMENT 07/2014 Edition PROJECT NO. ####### PROJECT TITLE CONTRACT TITLE 6. Water and Drain Connections to Equipment or to Stubs by Plumbing Contractor: Schedule 40 steel pipe with 150-lb, malleable-iron fittings. Provide unions with 6” brass nipples if connections are to copper lines. Pipe and fittings shall be black or galvanized as required to match piping to which connected. 7. Air Vent Discharge Piping: Type-L, hard copper tubing with wrought copper solder joint fittings and 95% tin, 5% antimony solder. 8. Cooling Coil Condensate Drain Piping: ASTM A120 or ASTM A53 galvanized steel, Schedule 40 with 125-lb, galvanized, cast-iron fittings or 150-lb, galvanized, malleable-iron fittings. At Contractor's option, piping same as for air vent discharge piping may be used. Provide plugged tees or crosses at all changes in direction. Plugs shall utilize the same material as the primary piping or shall be equipped with unions with 6” brass nipples. 9. Relief Valve Discharge and Vapor Vent Piping: Same as specified for cooling coil condensate drain piping, except that plugged fittings will not be required. 2.03 AIR SEPARATORS A. Provide air separators pressure rated for 125 psi. Select capacity based on total system gpm. B. In-Line Air Separators: Provide in-line air separators as indicated. Construct sizes 1-½” and smaller of cast iron and sizes 2” and larger of steel complying with ASME Boiler and Pressure Vessel Code for 125 psig and stamped with "U" symbol. C. Manufacturers: Amtrol, Inc., Armstrong Pumps, Inc., Bell and Gossett ITT; Fluid Handling Division, or equal. 2.04 EXPANSION TANKS A. General: Provide expansion tanks of size and number as indicated. Construct of steel for 125 psi pressure rating complying with ASME Boiler and Pressure Vessel Code and stamped with "U" symbol. Furnish National Board Form U-1 denoting compliance. Provide tappings in bottom of tank for tank fitting; tappings in top and bottom of tank for gauge glass connections. Provide ¾”, full-length gauge glass, with gauge cocks and cleanouts. B. Tank Fittings: Provide tank fittings for expansion tanks as indicated, sized for tank diameter. Design tank fittings for 125 psi pressure rating and include manual vent to establish proper air volume in tank on initial fill. C. Manufacturers: Amtrol, Inc., Wilkins, or equal. 2.05 DIAPHRAGM-TYPE EXPANSION TANKS A. Provide diaphragm expansion tanks of size and number as indicated. Construct tank of welded steel, constructed, tested, and stamped in accordance with Section VIII of ASME Boiler and Pressure Vessel Code for working pressure of 125 psi. Furnish National Board Form U-1 denoting compliance. Support vertical tanks with steel legs or base; support horizontal tanks with steel saddles. Provide specially compounded flexible diaphragm securely sealed into tank to permanently separate air charge from system water, to maintain design expansion capacity. Provide pressure gauge and air-charging fitting and drain fitting. 15500 - 3 HYDRONIC SYSTEMS AND EQUIPMENT 07/2014 Edition PROJECT NO. ####### PROJECT TITLE CONTRACT TITLE B. Manufacturers: Amtrol, Inc., Wilkins, or equal. 2.06 CHILLED WATER AND HEATING WATER CHEMICAL FEEDERS A. Provide chemical feeders of 5-gal. capacity or otherwise as indicated, constructed of cast iron or steel, for introducing chemicals in closed hydronic system. Provide funnel and valve on top for loading, drain valve in bottom, and recirculating valves on side. Construct for pressure rating of 125 psi. B. Manufacturers: 1. Dearborn 2. Neptune Chemical Pump Company, Model DBF-5 3. J.L. Wingert Company, Model 5HD 4. Vulcan Laboratories, Subsidiary of Clow Corporation 5. Or equal 2.07 COOLING TOWER SYSTEM CHEMICAL TREATMENT A. Furnish and install an automatic feed and bleed system as diagramed on the Drawings. Equipment shall be as follows: B. Electronic feed and bleed controller shall be UOP, or equal, equipped with power relay with a conductance range of 1,000 to 9,000 micro ohms. C. Chemical pump shall be Precision Model 10611-321, or equal, with minimum capacity of 0.10 to 3.4 GPD at 75 psi. Provide with acrylic head and fittings and Hypalon diaphragm and valves. D. The chemical tank shall be the chemical shipping container. E. The solenoid valve shall be normally closed, slow opening and closing, Griswold Model 4160, or equal, with General Purpose (NEMA 1) enclosure. 2.08 BASIC VALVES A. Provide valves complying with Division 15, Section 15050 – Basic Mechanical Materials and Methods, in accordance with the following listing. B. Balance Valves: 1. Shall be Armstrong, Tour Anderson, or equal in design. Valve shall provide multi- turn, 360º adjustment with a micrometer type indicator located on valve hand wheel. Valve handwheel shall have hidden memory feature which will provide a means for locking the valve in position after the system is balanced. Plug design valves are not acceptable. 90º turn adjustable valves are not acceptable. 15500 - 4 HYDRONIC SYSTEMS AND EQUIPMENT 07/2014 Edition PROJECT NO. ####### PROJECT TITLE CONTRACT TITLE C. Air Vent Valves: 1. Manual air vents: At all high points, reheat coils, the air vent assemblies shall consist of a ½” IPS ball valve and ½” gooseneck pipe of same material as piping. Air vent valves shall be easily accessible within arms-reach at ceiling access. D. Isolation Valves: 1. Provide isolation valves on all Hydronic piping into and out of Mechanical Rooms. 2.09 WATER RELIEF VALVES A.
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