NOTE IF THE GUIDE SPECIFICATION CONVENTIONS PAGE DOES NOT APPEAR CLICK ON SHOW/HIDE ICON ON MENU BAR OR CHOOSE TOOLS ON MENU BAR, CLICK OPTIONS, VIEW TAB, UNDER FORMATTING MARKS, CHECK HIDDEN TEXT (delete this note before printing) SECTION 15870
POWER VENTILATORS
PART 1 - GENERAL
0.1 SUMMARY
0.1.1. Section Includes:
a. Power Roof Ventilators. b. Inline Fans. c. Upblast Fan. d. [Fly Fans] [Air Curtain]. e. Makeup Air Unit. f. Rooftop Filtered Supply Fan
0.1.2. Related Sections:
a. Section 01042 - Mechanical, Refrigeration, Food Service Equipment and Electrical Coordination. b. Section 01400 - Quality Control. c. Section 01720 – [Phased Turnover and] Project Closeout. d. Section 15140 - Supports and Anchors. e. Section 15170 - Motors. f. Section 15240 - Vibration Isolation and Seismic Restraints. g. Section 15890 - Ductwork. h. Section 15910 - Duct Accessories. i. Division 16 – Electrical.
0.2 QUALITY CONTROL
0.2.1. The following publications form a part of this specification to the extent they are applicable: a. Section 01400 – Quality Control. b. AMCA 99 - Standards Handbook. c. AMCA 210 - Laboratory Methods of Testing Fans for Rating Purposes. d. AMCA 261 - Directory of Products Licensed to Bear the AMCA Certified Ratings Seal. e. AMCA 300 - Test Code for Sound Rating Air Moving Devices. f. AMCA 301 - Method of Publishing Sound Ratings for Air Moving Devices. g. NEMA MG1 - Motors and Generators. h. NFPA 70 - National Electrical Code. i. UL 705 - Power Ventilators.
0.3.1. Submittals for Review:
a. Submit under provisions of Section 01400. b. Product Data: Provide data on fans and accessories including sound power levels at rated capacity, and electrical characteristics and connection requirements. c. Manufacturer's Installation Instructions. d. Operation and Maintenance data.
0.3.2. Submittals at Project Closeout:
a. Section 01720 – [Phased Turnover and] Project Closeout. b. Operation and Maintenance Data: Include manufacturers’ descriptive literature, instructions for lubrication, motor and drive replacement, spare parts list, and wiring diagrams. c. The Contractor shall submit all certifications and testing data as a supplement to previously submitted O & M manuals at contract closeout
PART 2 - PRODUCTS
0.1 ROOF VENTILATORS, PRV
a. Product Requirements:
(1) Performance Ratings: Conform to AMCA 210 and bear the AMCA Certified Rating Seal. (2) Sound Ratings: AMCA 301, tested to AMCA 300, and bear AMCA Certified Sound Rating Seal. (3) Fabrication: Conform to AMCA 99. (4) UL Compliance: UL listed and labeled, designed, manufactured, and tested in accordance with UL 705.
b. Fan Unit: V-belt or direct driven as indicated, with spun aluminum housing; resilient mounted motor; 1/2 inch (13 mm) mesh, 16 gage (2 mm) aluminum birdscreen; square base to suit roof curb with continuous curb gaskets. c. Roof Curb: See Section 15140 d. Disconnect Switch: Factory wired, non-fusible, in housing for thermal overload protected motor. e. Motorized Shutter: Motor actuated, aluminum multiple blade construction, felt edged with nylon bearings, factory wired line voltage motor. f. Sheaves: Cast iron or steel, dynamically balanced, bored to fit shafts and keyed; variable and adjustable pitch motor sheave selected so required rpm is obtained with sheaves set at mid-position; fan shaft with self aligning pre-lubricated ball bearings.
0.2 INLINE FANS
a. Centrifugal Fan Unit: V-belt or direct driven with galvanized steel housing , resilient mounted motor, gravity backdraft damper in discharge. b. Disconnect Switch: In housing for thermal overload protected motor . c. Sheaves: Cast iron or steel, dynamically balanced, bored to fit shafts and keyed; variable and adjustable pitch motor sheaves selected so required rpm is obtained with sheaves set at mid-position; fan shaft with self-aligning pre-lubricated ball bearings.
a. Product Requirements:
(1) Performance Ratings: Conform to AMCA 210 and bear the AMCA Certified Rating Seal. (2) Sound Ratings: AMCA 301, tested to AMCA 300, and bear AMCA Certified Sound Rating Seal. (3) Fabrication: Conform to AMCA 99. (4) UL Compliance: UL listed and labeled, designed, manufactured, and tested and installed in accordance with UL 705 and 96.
b. Fan Unit: V-belt or direct driven as indicated, with upblast spun aluminum housing with grease tray, resilient mounted motor; 2 inch (13 mm) mesh, 0.62 inch (1.6 mm) thick aluminum wire birdscreen; square base to suit roof curb with continuous curb gaskets. c. Roof Curb: Ventilated double wall, hinged curb adapter, and factory installed nailer strip. See 3.1, g. below. d. Disconnect Switch: Factory wired, non-fusible, in housing for thermal overload protected motor e. Sheaves: Cast iron or steel, dynamically balanced, bored to fit shafts and keyed; variable and adjustable pitch motor sheave selected so required rpm is obtained with sheaves set at mid-position; fan shaft with self-aligning pre-lubricated ball bearings.
0.4 [FLY FANS] [AIR CURTAINS] a. Complete factory assembled prewired units consisting of casing, split housing fan scrolls for easy access, centrifugal fans, inlet screen, discharge grille and motor specifically designed to provide a uniform velocity across the entire width of unit. b. Grease fittings located outside cabinet. c. Comply with USDA and NSFS standards. d. Unit casings shall be a minimum of 14 gauge steel and finished in epoxy enamel. e. Motors shall be 2-speed, permanently lubricated, totally enclosed, air over, equipped with heavy duty thrust bearings and double extended shafts requiring no outboard bearings. Belt driven units will not be acceptable. f. Fans shall be forward curved centrifugal type, double inlet, double width design with brazed hubs. g. Discharge grille shall be adjustable double deflection type with airfoil shaped extruded aluminum vanes. h. Furnish for outdoor weather exposed mounting, with water-proof junction boxes. i. Factory mounted, factory wired control panels including disconnect, motor starters, transformer for low voltage door switch and terminal strip for connection to power source. Mount and wire door switch. j. AMCA 220 certified.
0.5 MAKEUP AIR UNIT a. Unit shall consist of a filtered makeup air fan and indirect gas fired heater, in take duct, and turn down cabinet all factory mounted and wired on a common roof curb. b. The filtered makeup air unit shall have a resiliently mounted, belt driven, double width, double inlet centrifugal fan, with a permanently lubricated ball bearing motor and adjustable speed drive. The fan and turn down cabinets shall be constructed to be galvanized steel panels with 1: foil faced fiberglass insulation. The panels shall be removable for access to internal parts. Filters shall be UL classified aluminum mesh. c. Roof curb and roof mounting rails shall be in accord with Section 15140. d. The indirect as fired heater shall have a stainless steel heat exchanger, aluminized steel burners, gravity venting system, electric spark ignition pilot, gas pressure regulator, control transformer, modulation has valve, safety pilot, high limit switch, discharge thermostat to start and modulate the burner, and an enameled aluminized steel cabinet with 1” foil faced insulation. e. The prewired control panel shall include a disconnect switch, main fuse blocks and fuses, motor starterswitch thermal overloads, control transformer, all UL listed and mounted in a unified control panel for single point electrical connection.
0.6 ROOFTOP FILTERED SUPPLY FAN
a. Product Requirements:
(1) Performance Ratings: Conform to AMCA 210 and bear the AMCA Certified Rating Seal. (2) Sound Ratings: AMCA 301, tested to AMCA 300, and bear AMCA Certified Sound Rating Seal. (3) Fabrication: Conform to AMCA 99. (4) UL Compliance: UL listed and labeled, designed, manufactured, and tested in accordance with UL 705.
b. Fan Unit: V-belt driven, downblast forward curved fan, with galvanized steel housing; resilient mounted motor; 1/2 inch (13 mm) mesh, 16 gage (2 mm) aluminum birdscreen; permanent washable 1” aluminum filters, square base to suit roof curb with continuous curb gaskets. c. Roof Curb: See Section 15140 d. Disconnect Switch: Factory wired, non-fusible, in housing for thermal overload protected motor. e. Motorized Shutter: Motor actuated, aluminum multiple blade construction, felt edged with nylon bearings, factory wired line voltage motor. f. Sheaves: Cast iron or steel, dynamically balanced, bored to fit shafts and keyed; variable and adjustable pitch motor sheave selected so required rpm is obtained with sheaves set at mid-position; fan shaft with self aligning pre-lubricated ball bearings.
PART 3 - EXECUTION
0.1 INSTALLATION
a. Install in accordance with manufacturer's instructions. b. Secure roof exhausters with lag screws to roof curb structure. c. Extend ducts to roof exhausters into roof curb. d. Provide sheaves required for final air balance. e. Install dampers on inlet to roof exhausters. f. Do not operate fans for any purpose until ductwork is clean, filters in place, bearings lubricated, and fan has been test run under observation. g. Range hood exhaust fans shall discharge 40” or more above roof and 3’ above intakes within 10 horizontally.
END OF SECTION