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OC Sportsplex Pool HVAC Unit Replacement <br />PDC Project 23022 Air Duct Accessories 23 33 00 - 3 <br />9.Or Approved Equal <br />B.Fabrication: Rigid and close fitting of galvanized steel with sealing gaskets and quick-fastening <br />locking devices.For insulated ducts,install minimum 1-inch thick insulation with sheet metal cover. <br />1.Up to 18 inches Square: Provide two hinges and two sash locks. <br />2.Up to 24 by 48 inches: Three hinges and two compression latches with outside and inside <br />handles. <br />C.Access doors with sheet metal screw fasteners are not acceptable. <br />D.Provide access doors of adequate size to allow easy access to the equipment that will require <br />maintenance.Provide insulated or acoustically lined doors to prevent condensation where <br />applicable. <br />E.Manufacturer shall provide a neoprene gasket around perimeter of access door for airtight seal. <br />F.Systems 2"w.g.or less shall use a hinged,cam,or hinged &cam square framed access door. <br />G.Systems 3"w.g.and above shall use a sandwich type access door.Construct doors in accordance <br />with Figure 7-3 of the 2005 SMACNA Manual,"HVAC Duct Construction Standards,Metal & <br />Flexible,"Third Edition.Doors shall be rated for +/-10"w.g. <br />2.05 DUCT TEST HOLES <br />A.Temporary Test Holes: Cut or drill in ducts as required.Cap with neat patches,neoprene plugs, <br />threaded plugs,or threaded or twist-on metal caps. <br />B.Permanent Test Holes: Factory fabricated,air tight flanged fittings with screw cap. Provide <br />extended neck fittings to clear insulation. <br />2.06 FLEXIBLE DUCT CONNECTORS <br />A.Manufacturers: <br />1.Carlisle HVAC Products​​ <br />2.Ductmate Industries,Inc,a DMI Company​​ <br />3.Elgen Manufacturing,Inc​​ <br />4.Durodyne <br />5.Or Approved Equal <br />B.Flexible duct connector shall be used where ductwork connects to fan apparatus or fan casings to <br />isolate vibration transfer. Connectors shall be attached in such a manner as to provide an airtight <br />and waterproof seal. <br />C.Connectors will comply with NFPA 90A,“Installation of Air Conditioning &Ventilation Systems”and <br />NFPA 90B,“Installation of Warm Air Heating &Air Conditioning Systems”. <br />D.Connector fabrics shall meet NFPA 701 (formerly UL 214.) <br />E.Connector fabrics shall be mildew resistant per ASTM G21. <br />F.Indoor installations shall be NFPA 701 listed,fire retardant Vinyl coated woven nylon or Neoprene <br />coated woven fiberglass fabric. Minimum density of Vinyl is 20 oz./sq.yd.and rated to 200F. <br />Minimum density of Neoprene 30 oz./sq.yard and rated to 200F. <br />G.Outdoor installations shall be NFPA 701 listed UV-resistant Hypalon coated woven fiberglass <br />fabric. Minimum density 24 oz./sq.yd.and rated to 250F. <br />H.High temperature applications shall be NFPA 701 listed,Silicone coated satin weave <br /> fiberglass fabric.Minimum density 17.5 oz./sq.yd.and rated to 500 F. <br />I.Chemical resistant applications shall be of Teflon coated woven fiberglass fabric.Minimum density <br />18 oz./sq.yd.and rated to 500 F. <br />J.Fabricate in accordance with SMACNA (DCS)and as indicated. <br />K.Flexible Duct Connections: Fabric crimped into metal edging strip. <br />2.07 VOLUME CONTROL DAMPERS <br />A.Manufacturers: <br />1.MKT Metal Manufacturing​​ <br />Docusign Envelope ID: D4F3B98E-0756-4A0C-A3AD-05AA32D39F1C