A. General: Refer to paragraph entitled "SUBMITTAL" in Section Include the following data:
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1 SECTION FANS PART 1 - GENERAL 1.01 RELATED DOCUMENT A. Basic Requirements: Provisions of Section 15010, BASIC MECHANICAL REQUIREMENTS, and Section 15030, ELECTRICAL REQUIREMENTS FOR MECHANICAL EQUIPMENT, are a part of this Section SUMMARY A. General: Provide fans as specified herein and of size, type, capacity, and electrical characteristics indicated ADDITIONAL REQUIREMENTS A. Related Sections: Other Sections of Division 15 which relate to the requirements of this Section may include but are not limited to the following: , BASIC MECHANICAL MATERIALS AND METHODS , VIBRATION ISOLATION , AIR INTAKE AND RELIEF VENT , DUCTWORK , DUCTWORK SPECIALTIES , BUILDING CONTROL SYSTEM , PERFORMANCE VERIFICATION B. Related Divisions: Other Divisions of these specifications which relate to the requirements of this Section may include but are not limited to the following: 1.04 SUBMITTAL 1. Division 16, ELECTRICAL A. General: Refer to paragraph entitled "SUBMITTAL" in Section Include the following data: 1. Manufacturers Literature: a. Dimensional outline drawing for each of the specified fans including operating weight. b. Dimensional drawing of roof curbs. 2. Performance Data: FANS
2 a. Fan brake-horsepower (bhp)for each fan at scheduled static pressure including drive losses. b. Actual motor horsepower, voltage and phase for each fan. c. Fan curve for each fan indicating flow, static (or total) pressure developed, efficiency, and fan speed at the design point. d. Fan sound power levels for each fan at operating conditions. e. Vibration isolators for each fan located inside the building. 3. Installation Instructions: a. Manufacturer's printed instructions for the installation of each type of fan including copies shipped with the equipment. 4. Maintenance Instructions: 1.05 APPLICABLE STANDARDS a. Manufacturer's printed instructions for the maintenance of each type of fan provided. A. General: All equipment, material, accessories, methods of construction and reinforcement, finish quality, workmanship and installation shall be in compliance with the paragraph entitled "Code Compliance" in Section B. Comply: With the National Fire Protection Association (NFPA) Standards and other Codes and Standards as adopted by the Local Authority having Jurisdiction. C. Certification: AMCA certified as to both sound and performance ratings, and in compliance with the requirements of ARI Standard D. NFPA: Standard 90A, "Installation for the Installation of Air Conditioning and Ventilating Systems", 1993 Revision. E. NFPA: Standard 91, "Installation of Blower and Exhaust Systems for Dust, Stock and Vapor Removal of Conveying", 1992 Revision. F. NFPA: Standard 96, "Installation of Equipment for the Removal of Smoke and Grease-Laden Vapors from Commercial Cooking Equipment", 1994 Revision. PART 2 - PRODUCTS 2.01 MANUFACTURERS A. General: Refer to paragraph entitled "MANUFACTURERS" in Section FANS
3 2.02 GENERAL 1. Acme Engineering and Manufacturing Company 2. Greenheck Fan and Ventilator Corp. 3. Loren Cook Company 4. Penn Ventilator Company 5. Aerovent A. Roof Curb: All roof mounted supply and/or exhaust fans shall be mounted on a roof curb. Refer to paragraph entitled "ROOF CURB AND EQUIPMENT MOUNTING SUPPORTS" in Section B. Bird Screen: Provide removable bird screens, 1/2" mesh, 16 gauge aluminum or brass wire on each fan unless otherwise noted on the drawings. C. Backdraft Damper: Provide gravity-actuated louvered backdraft damper for each fan unless a motorized control damper is noted on the drawings. Damper blades shall be aluminum construction, with felt on the trailing edges to assure a tight closing seal. D. Vibration Isolation: Isolate the entire rotating assembly and motor of each fan to prevent the transmission of vibration into the structure. E. Fan Access: The hood covering the fan motor and drive shall be hinged to provide access and shall be equipped with an approved locking device to fasten hood in open and closed positions. F. Fan Motor: Refer to paragraph entitled "ELECTRIC MOTOR" in Section A disconnect switch inside the fan housing is not a requirement. Unless specifically indicated otherwise air handling unit fan motors shall be selected as follows: 1. Less than 5 HP; 135 percent of bhp 2. 5 Hp through 25 HP; 125 percent of bhp 3. Greater than 25 HP 115 percent of bhp G. V-Belt Drive: Refer to paragraph entitled "V-BELT DRIVE" in Section for requirements for all belt driven fans. H. Speed Control: Provide a solid-state speed controller for each direct drive motor. Speed controller shall enable full modulation of motor between % of nameplate capacity for fan balancing ROOF MOUNTED EXHAUST A. Centrifugal Type: FANS
4 A. Centrifugal Upblast Type: 1. Fan Hood, Housing, and Base: Weatherproof and constructed of heavy gauge aluminum. 2. Fan Wheel: Backward curved; non-overloading; aluminum; air foil blade type; statically and dynamically balanced; keyed and locked to shaft. 3. Drive Assembly: Motor and drive assembly shall be located out of exhaust air stream, cushioned mounted on multi-directional neoprene vibration isolators and positively ventilated. Supported by a structural frame independent of hood, housing, and curb base. See the fan schedule on the drawing for drive type. 1. Fan Hood, Housing, and Base: Weatherproof and constructed of aluminum; vertical discharge. 2. Fan Wheel: Backward curved; non-overloading; aluminum air foil type blade; statically and dynamically balanced; keyed and locked to shaft. 3. Motor and Drive Assembly: Motor and drive assembly located out of exhaust air stream; cushioned mounted on multi-directional neoprene vibration isolators; positive ventilation; supported by a structural frame independent of hood, housing, and curb base. See the fan schedule on the drawing for drive type. 4. Kitchen Hood Exhaust: Fans used for exhausting grease fumes from kitchen hood shall be arranged so that the fan discharge is a minimum of 40 inches above the roof. Curb caps shall incorporate drainable grease troughs except where such troughs are an integral part of the fan itself. Fans shall be Underwriters Laboratories listed for grease removal and shall have a thermal barrier to insulate wheel compartment from drive compartment SPECIAL APPLICATION A. Air Curtain: 1. Casing: Air curtain units shall be furnished as factory assembled, consisting of casing, split housing fan scrolls, centrifugal fans, inlet screen, discharge grille and motor. Air curtain unit shall provide a uniform velocity across the entire length of discharge area. 2. Units shall be furnished in single increments of sufficient structural strength to be supported from both ends without intermediate support. Multiple units shall not be permitted. Unit casings shall be a minimum of 14 gauge steel finished in duranodic acrylic, or one piece molded high density self-extinguishing polycarbonate. FANS
5 3. Fan: Forwarded curved centrifugal type, double inlet, double width design with brazed hubs. Tangential type blowers and coupling connections shall not be permitted. 4. Motor: Totally Enclosed Air Over (TEAO) equipped with regreasable, shielded ball bearings of equal size at each end of double extended shafts requiring no outboard bearings. 5. Discharge Grille: Individually adjustable directional air foil vanes. Each vane shall have set screw for locking in place. Adjustment in 5 degree increments (min. 90 degree range). 6. Other Requirements: a. Unit ratings to be certified per AMCA Air Curtain Test Procedure Standard No. 220; bear the AMCA seal; provided with factory mounted, factory wired control panels including a starter for each motor and terminal strip in a NEMA Type 1 enclosure; remote door limit switch to de-energize the unit whenever the door is open. 7. Manufacturer: a. Dynaforce Corporation b. Greenheck Fan Corporation c. Loren Cook Company d. Mars Sales PART 3 - EXECUTION 3.01 PLACEMENT AND MOUNTING A. Installation: Fan location shall be as indicated, however, actual placement shall be verified using field measurements and data relating to the equipment approved for actual installation. Mount fan and backdraft damper in strict accordance with manufacturer's instructions. B. Roof Mounted: Verify the location of the roof curb with the structural drawings. Coordinate the installation with the requirements of Division 7, THERMAL AND MOISTURE PROTECTION SOUND AND VIBRATION CONTROL A. Reference: Refer to paragraph entitled "FLEXIBLE DUCT EQUIPMENT CONNECTION in Section 15910, for air side duct connections and to Section 15240, VIBRATION ISOLATION, for vibration hangers. FANS
6 1. Curb Mounted Units: 3.03 OPERATING CONTROLS a. Connect inlet ducts to roof curb inlet flanges using flexible duct connectors. Support ductwork so that the connectors are not in tension and are aligned with ductwork. A. Control Interlock: Interlock the exhaust fans with their associated air handling units such that when the air handling unit is de-energized for any reason the exhaust fans are also de-energized; when the air handling unit starts, the associated exhaust fans shall also start TEST AND BALANCE A. Checkout: Operate all fans, adjust drive speeds to achieve design air flow, and perform other requirements as indicated in Section 15990, PERFORMANCE VERIFICATION. END OF SECTION FANS
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