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Home My WebLink About15910.pdf BICKFORD OF CARMEL, IN 12/12/2012 DUCTWORK ACCESSORIES 15910-1 SECTION 15910 DUCTWORK ACCESSORIES PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division-1 Specification sections, apply to work of this section. 1.2 QUALITY ASSURANCE A. Comply with the following Codes and Standards 1. SMACNA Compliance Comply with applicable portions of SMACNA “HVAC Duct Construction Standards, Metal and Flexible”. 2. Industry Standards Comply with ASHRAE recommendations pertaining to construction of ductwork accessories, except as otherwise indicated. 3. UL Compliance Construct, test, and label fire, smoke, and combination fire/smoke dampers in accordance with the following UL Standards; a. Ceiling Fire Dampers UL555C b. Fire Dampers UL555 c. Smoke Dampers UL555S d. Combination Fire/Smoke Dampers UL555/UL555S e. Actuators UL555/UL555S 4. NFPA Compliance Comply with applicable provisions of NFPA 90A “Air Conditioning and Ventilating Systems”, pertaining to installation of ductwork accessories. 1.3 SUBMITTALS A. Product Data Submit manufacturer’s technical product data for each type of ductwork accessory, including dimensions, capacities, and materials of construction; and installation instructions. B. Test Reports Submit leak testing reports to the engineer for review upon completion of testing activities required under Part 3 Execution. C. Operating and Maintenance Manuals Submit Operating and Maintenance Manuals in accordance with Specification Section 15010 containing, but not limited too, all information required therein. PART 2 - PRODUCTS 2.1 DAMPERS A. Low Pressure Manual Dampers: Provide dampers of single blade type or multiblade type, constructed in accordance with SMACNA “HVAC Duct Construction Standards”. BICKFORD OF CARMEL, IN 12/12/2012 DUCTWORK ACCESSORIES 15910-2 A. Control Dampers: Provide dampers with opposed blades for manual control, and parallel blades for modulating control. Construct blades of 16-GA steel, provide heavy-duty molded self- lubricating nylon bearings, ½” diameter steel axles. Construct frame of steel channel. Provide galvanized steel finish with aluminum touch-up. Auto control dampers shall be low leak type, 3 CFM per square foot area at 1-inch water column. B. Manufacturer Subject to compliance with requirements, provide dampers of one of the following: Air Balance, Inc. Airguide Corp. American Warming & Ventilating, Inc. Louvers & Dampers, Inc. Penn Ventilator Co. Ruskin Mfg. Co. Arrow Louver & Damper; Div. of Arrow United Industries, Inc. 2.2 FIRE, SMOKE, CEILING FIRE AND COMBINATION FIRE/SMOKE DAMPERS A. Fire Dampers Provide fire dampers where indicated. Dampers shall meet the following specifications; Damper Type: Curtain Type. Blades out of Airstream Blade Material: 24 GA. galvanized steel Frame Material: 20 GA. galvanized steel Closure Spring: 301 Stainless Steel Constant Force Type Fusible Link: 165 deg. F. Mounting: Vertical or horizontal as required by Drawings. Fire Rating: 1-1/2 or 3 HR UL label as required by Drawings. B. Smoke Dampers Provide smoke dampers where indicated. Dampers shall meet the following specifications: Damper Type: Multiple Blade Blade Material: 16 GA. galvanized steel Frame Material: 16 GA. galvanized steel Linkage: Concealed in frame Bearings: Stainless Steel sleeve Blade Seals: Silicone Coated Fiberglass Fabric Jamb Seals: Silicone rubber with stainless steel cover. Max. Leakage Rate: 4 CFM/Sq. Ft. @ 1” W.G. Actuator: Electric C. Combination Fire and Smoke Damper Provide combination fire and smoke dampers where indicated. Dampers shall meet the following specifications: Damper Type: Multiple Blade Blade Material: 16 GA. galvanized steel Frame Material: 16 GA. galvanized steel Linkage: Concealed in frame Bearings: Stainless Steel sleeve Controlled Closure Device (Heat-Activated): 165 deg. F; automatic resettable after test smoke detection or power failure conditions. Mounting: Vertical or Horizontal as required by Drawings Blade Seals: Silicone coated fiber-glass fabric Jamb Seals: Silicone rubber with stainless steel cover Max. Leakage Rate: 4 CFM/ Sq. Ft @ 1” W. G. Fire Rating: 1-1/2 HR UL label Actuator: Electric BICKFORD OF CARMEL, IN 12/12/2012 DUCTWORK ACCESSORIES 15910-3 Operation: When smoke is detected, or during testing, or if power failure occurs, the damper will close and remain closed until the smoke signal ceases, the test is complete, or power is restored. The system will automatically remote reset the damper to the open position. When temperatures in excess of 165°F are detected, the damper will close and lock. At no time shall the damper be disengaged from the actuator. Upon cessation of the fire conditions, the damper can be re-opened by pressing the reset button located on the damper assembly. D. Ceiling Fire Damper Provide ceiling fire damper where indicated. Damper shall meet the following specifications; Damper Type: Rectangular or round Blade Material: 20 GA. galvanized steel (Up to 324 sq. inches - rectangular) Blade Insulation: U.L. Classified Frame Material: 20 GA. galvanized steel Fusible Link: 212 deg. F Fire Rating: 3 HR. U.L. label E. Manufacturer Subject to compliance with requirements, provide fire and smoke dampers of one of the following: Air Balance, Inc. American Warming & Ventilating, Inc. Louvers and Dampers, Inc. Penn Ventilator Co. Phillips-Aire. Ruskin Mfg. Co. Arrow Louver and Damper; Div. of Arrow United Industries Inc. 2.3 TURNING VANES A. Fabricated Turning Vanes Provide fabricated turning vanes and vane runners, constructed in accordance with SMACNA “HVAC Duct Construction Standards”. B. Manufactured Turning Vanes Provide turning vanes constructed of 1-1/2” wide curved blades set at ¾” o.c., supported with bars perpendicular to blades set at 2” o.c., and set into side strips suitable for mounting in ductwork. C. Manufacturer Subject to compliance with requirements, provide turning vanes of one of the following: Aero Dyne Co. Airsan Corp. Barber-Colman Co. Duro Dyne Corp. Hart & Cooley Mfg. Co. Environmental Elements Corp.; Subs. Koppers Co., Inc. Anemostat Products Div.; Dynamics Corp. of America. 2.4 DUCT HARDWARE A. Provide duct hardware, manufactured by one manufacturer for all items on project, for the following: 1. Quadrant Locks a. Provide for each damper, quadrant lock device on one end of shaft; and end bearing plate on other end for damper lengths over 12”. Provide extended quadrant locks and end extended bearing plates for externally insulated ductwork. BICKFORD OF CARMEL, IN 12/12/2012 DUCTWORK ACCESSORIES 15910-4 b. Subject to compliance with requirements, provide duct hardware of one of the following: Ventfabrics, Inc. Young Regulator Co. 2.5 DUCT ACCESS DOORS A. Provide where required, duct access doors of adequate size to serve function. 1. Construction Construct of same or greater gage as ductwork served, provide insulated doors for insulated ductwork. Provide flush frames for uninsulated ductwork, extended frames for externally insulated duct. Provide one size hinged, other side with one handle-type latch for doors 12” high and smaller, 2 handle-type latches for larger doors. 2. Manufacturer Subject to compliance with requirements, provide duct access doors of one of the following: Air Balance Inc. Duro Dyne Corp. Ruskin Mfg. Co. Ventfabrics, Inc. 2.6 FLEXIBLE CONNECTIONS A. Provide flexible duct connections wherever ductwork connects to vibration isolated equipment. Construct flexible connections of neoprene-coated flameproof fabric crimped into duct flanges for attachment to duct and equipment. Make airtight joint. Provide adequate joint flexibility to allow for thermal, axial, transverse, and torsional movement, and also capable of absorbing vibrations of connected equipment. B. Provide flexible round, insulated duct connections to air outlets (diffusers). Use 2 ft. maximum length. Do not run flexible ductwork through walls. C. Manufacturer Subject to compliance with requirements, provide flexible connections of one of the following: American/Elgen Co.; Energy Div. Duro Dyne Corp. Flexaust (The) Co. Ventfabrics, Inc. PART 3 - EXECUTION 3.1 INSTALLATION OF DUCTWORK ACCESSORIES A. Install ductwork accessories in accordance with manufacturer’s installation instructions, with applicable portions of details of construction as shown in SMACNA standards, and in accordance with recognized industry practices to ensure that products serve intended function. B. Install turning vanes in square or rectangular 90 deg. elbows in supply and exhaust air systems, and elsewhere as indicated. C. Install access doors to open against system air pressure, with latches operable from either side, except outside only where duct is too small for person to enter. D. Install volume dampers using “Quads”. Dampers in concealed ducts above drywall ceilings shall be provided with Ventlock No. 666 ceiling access operator. E. Install Fire and Fire/Smoke Dampers 1. Install dampers as indicated to meet the requirements of NFPA 90A, and as shown in SMACNA Fire Damper Guide. Install access doors of not less than 10 x 12 on the link side of dampers for inspection and checking of damper position. Doors in low-pressure ductwork BICKFORD OF CARMEL, IN 12/12/2012 DUCTWORK ACCESSORIES 15910-5 shall be Ventlok insulated doors or Airsan hinged duct ports with double glass. Access doors are not required at locations where inspection and access to the fire link is possible by removal of diffusers or grilles. F. Coordinate wiring of fire/smoke dampers and smoke dampers with electrical and fire alarm contractors. 3.2 ADJUSTING AND CLEANING A. Adjust ductwork accessories for proper settings, install fusible links in fire dampers and adjust for proper action. 3.3 FIELD QUALITY CONTROL A. Operate installed ductwork accessories to demonstrate compliance with requirements. Test for air leakage while system is operating. Repair or replace faulty accessories, as required to obtain proper operation and leak-proof performance. END OF SECTION