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HomeMy WebLinkAboutM004 - MECHANICAL SPECIFICATIONSF: E. Set dam care tofu Ily open position before testing, adjusting, and balancing. F. Install test holes at fan inlets and outlets and elsewhere as indicated. G. Install fire dampers according to UL listing. H. Install duct access tloors on sides of ducts to allow for inspecting, adjusting, and maintaining accessories and equipment at the following locations: 1. Downstream from manual volume dampers, control dampers, backdraft dampers, and equipment. 2. Adjacent to and close enough to fire or smoke dampers, to reset or reinstall fusible links. Access tloors for access to fire or smoke dampers having fusible links shall be pressure relief access tloors and shall be outward operation for access tloors installed upstream from dampers and inward operation for access doors installed downstream from dampers. 3. Control devices requiring inspection. 4. Elsewhere as indicated. I. Install access doors with swing against dud static pressure. J. Access Door Sizes: 1. One -Hand or Inspection Access: 8 by 5 inches. 2. Two -Hand Access: 12 by 6 inches. 3. Head and Hand Access: 18 by 10 inches. 4. Head and Shoulders Access: 21 by 14 inches. 5. Body Access: 25 by 14 inches. 6. Body plus Ladder Access: 25 by 17 inches. K. Install duct test holes where required for testing and balancing purposes. END OF SECTION 233300 SECTION 233346 - FLEXIBLE DUCTS 1.1 ACTION SUBMITTALS A. Product Data: For each type of product. 1.2 ASSEMBLY DESCRIPTION A. Comply with NFPA 90A,"Installation of Air Conditioning and Ventilating Systems," and with NFPA 90B, "Installation of Warm Air Heating and Air Conditioning Systems." B. Comply with SMACNAS "HVAC Dud Construction Standards - Metal and Flexible" for acceptable materials, material thicknesses, and duct construction methods unless otherwise indicated. Sheet metal materials shall be free of pitting, seam marks, roller marks, stains, discolorations, and other imperfections. C. Comply with the Air Diffusion Council's "ADC Flexible Air Duct Test Code FD 72-R1." D. Comply with ASTM E 96/E 96M, "Test Methods for Water Vapor Transmission of Materials." 1.3 NON -INSULATED FLEXIBLE DUCTS A. Non -Insulated, Flexible Duct: UL 181, Class 1, black polymerfilm supported by helically wound, spring -steel wire. 1. Pressure Rating: 4-Inch wg positive and 0.5-inch wg negative. 2. Maximum Air Velocity: 4000 fpm. 3. Temperature Range: Minus 20 to plus 175 deg F. 1.4 INSULATED FLEXIBLE DUCTS A. Insulated, Flexible Dud: UL 181, Class 1, black polymerfilm supported by helically wound, spring -steel wire; fibrous -glass insulation; polyethylene vapor -barrier film. 1. Pressure Rating: 4-inch wg positive and 0.5-inch wg negative. 2. Maximu m Air Velocity: 4000 fpm. 3. Temperature Range: Minus 20 to plus 175 deg F. 4. Insulation R-Value: Comply with ASHRAE/IES 90.1. 1.5 FLEXIBLE DUCT CONNECTORS A. Clamps: Stainless -steel band with cadmium -plated hex screw to tighten band with a worm -gear action in sizes 3 through 18 inches, to suit duct size. 1.6 INSTALLATION A. Install flexible ducts according to applicable details in SMACNA's "HVAC Duct Construction Standards -Metal and Flexible" for metal ducts and in NAIMA AH 116, "Fibrous Glass Duct Construction Standards," for fibmus-glass duds. B. Install in indoor applications only. Flexible ductwork should not be exposed to UV lighting. C. Conned terminal units to supply ducts with maximum 12-inch lengths of flexible dud. Do not use flexible ducts to change directions. D. Connect diffusers or light troffer boots to ducts directly or with maximum 60-Inch lengths of flexible duct clamped or strapped in place. E. Con nect flexible ducts to metal ducts with draw bands. F. Install duct test holes where required for testing and balancing purposes. G. Installation: 1. Install ducts fully extended. 2. Do not bend ducts across sharp corners. 3. Bends at flexible ducting shall not exceed a minimum of one duct diameter. 4. Avoid contact with metal fixtu as, water lines, pipes, or mnduits. 5. Install flexible ducts in a direct line, without sags, twists, or turns. H. Supporting Flexible Ducts: 1. Suspend flexible ducts with bands 1-1/2 inches wide or wider and spaced a maximum of 48 inches aped. Maximum centerline sag between supports shall not exceed 1/2 inch per 12 inches. 2. Install extra so boons at bends placed approximately one duct diameter from center line of the bend. 3. Ducts may rest on ceiling joists or truss supports. Spacing between supports shall not exceed the maximum spacing per manufacturer's written installation instructions. 4. Vertically installed ducts shall be stabilized by support straps at a maximum of 72 inches O.C. SECTION 233423 - HVAC POWER VENTILATORS 1.1 ACTION SUBMITTALS A. Product Data: For each type of protluct indicated. Include rated capacities, operating characteristics, and furnished specialties and accessories. Also include the following: 1. Certified fan performance curves with system operating conditions indicated. 2. Certified fan sound -power ratings. 3. Motor ratings and electrical characteristics plus motor and electrical accessories. 4. Material thickness and finishes, including color charts. 5. Dampers, including housings, linkages, and operators. 6. Roof curbs. 7. Fan speed controllers. 1.2 COORDINATION A. Coordinate size and location of stmcturalsteel support members. B. Coordinate sizes and locations of roof curbs, equipment supports, and roof penetrations with actual equipment provided. RELEASED FOR CONSTRUCTION Subject to compliance with all regulations of State and meal Codes City of Camel DATE: 08/23/19 1.3 CENTRIFUGAL ROOF VENTILATORS A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. Games Company. 2. Greenback Fan Corporation. 3. Loren Cook Company. B. Housing: Removable, spun -aluminum, dome top and outlet baffle; square, one-piece, aluminum base with ventun inlet cone. 1. Upblast Units: Provide spun -aluminum discharge baffle to direct discharge air upward, with rain and snow drains. 2. Hinged Subbase: Galvanized -steel hinged arrangement permitting service and maintenance. C. Fan Wheels: Aluminum hub and wheel with backward -inclined blades. D. Belt Drives: 1. Resiliently mounted to housing. 2. Fan Shaft: Turned, ground, and polished steel; keyed to wheel hub. 3. Shaft Bearings: Permanently lubricated, permanently sealed, self -aligning ball bearings. 4. Pulleys: Cast-iron, adjustable -pitch motor pulley. 5. Fan and motor isolated from exhaust airstream. E. Accessories: 1. Dismnnect Switch: Nonfusible type, with thermal -overload protection mounted inside fan housing, factory wiretl through an internal aluminum motion. 2. Bird Screens: Removable, 1/2-inch mesh, aluminum or brass wire. 3. Dampers: Counterbalanced, parallel -blade, backdaft dampers mounted in curb base; factory set to close when fan stops. 4. Motorized Dampers: Parallel -blade dampers mounted in curb base with electric actuator; wiretl to close when fan stops. F. Roof Curbs: Galvanized steel; mitered and welded comers; 1-1/2-inch-Nick, rigid, fiberglass insulation adhered to inside walls; and 1-1/2-inch wood nailer. Size as required to suit roof opening and fan base. 1. Configuration: Built-in cant and mounting flange. 2. Overall Height: 16 inches. 3. Pitch Mounting: Manufacture curb for roof slope. 4. all Liner: Galvanized steel. 1.4 IN -LINE CENTRIFUGAL FANS A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. Games Company. 2. Greenback Fan Corporation. 3. Loren Cook Company. B. Housing:Split, spun aluminum with aluminum straightening vanes, inlet and outlet flanges, and support bracket adaptable to floor, side wall, or ceiling mounting. C. Direct -Dave Units: Motor mounted in airstream, facory wiretl to disconnect switch located on outside of fan housing. D. Belt-Dmen Units: Motor mounted on adjustable base, with adjustable sheaves, enclosure around bells within fan housing, and lubricating tubes from fan bearings extended to outside of fan housing. E. Fan Wheels Aluminum, airfoil blades welded to aluminum hub. F. Accessories: 1. Companion Flanges: For inlet and outlet dud connections. 2. Fan Guards: 1/2-by 1-inch mesh of galvanized steel in removable fame. Provide guard for inlet or outlet for units not connected to ductwork. 3. Motor and Drive Cover (Belt Guard): Epoxy -mated steel. PART 2 - EXECUTION 2.1 INSTALLATION A. Install mwerventilators level and plumb. B. Secure roof -mounted fans to roof curbs with cadmium -plated hardware. C. Support suspended units from structure using threaded steel rotls and sprang hangers having a static deflection of 1 inch. D. Install units with clearances for service and maintenance. 2.2 CONNECTIONS A. Drawings indicate general arrangement of ducts and duct accessories. B. Install ducts adjacent to power ventilators to allow service and maintenance. 2.3 ADJUSTING A. Adjust damper linkages for proper damper operation. B. Adjust belt tension. C. Comply with requirements in Section 230593'Testing, Adjusting, and Balancing for HVAC" for testing, adjusting, and balancing procedures. D. Replace fan and motor pulleys as required to achieve design airflow. E. Lubricate bearings. SP-NGA spin • strength • yoga A l. FOXFIEID CONSIRUIC ION LTD. oewxas oesoev¢ s �asnaa¢ VIRTUAL � ENERGY SOLUTIONS 6252 W 59th STREET, CHICAGO, IL 60638 312.583.7023 W W W.VESCHICAGO.COM #AA26003751 % N co m C) U CO C r � m � ~ U 03 Q UU r r L � U r ,x5111C1Ipsq 7'el, O GIST... Q0 l PEI]600637 '? STATE OF i ,¢ VIES project number: 190301 sheet title: MECHANICAL SPECIFICATIONS sheet number. M004 © 2018 Virtual Energy Solutions, Inc.