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OC Sportsplex Pool HVAC Unit Replacement <br />PDC Project 23022 Air Duct Accessories 23 33 00 - 5 <br />1)On insulated ducts,provide 2 inch standoff bracket <br />4.Manufacturers: <br />a.Greenheck MBD-10M <br />b.Ruskin <br />c.Nailor <br />F.Rectangular Multi-Blade Balancing Dampers:2 in w.g.and below <br />1.Pressure:Up to 4 in w.g. <br />2.Velocity:2,000 fpm <br />3.Temperature:180°F <br />4.Construction: <br />a.Frame Material -​​Galvanized Steel​​ <br />b.Frame Thickness:16 gauge <br />c.Blade Material:Galvanized Steel <br />d.Blade Thickness:16 gauge <br />e.Blade Type:3V <br />f.Blade Operation:Opposed <br />g.Axle Bearings:Synthetic sleeve type <br />h.Axle Material:​​Plated Steel​​ <br />i.Operaror:1/2 inch locking manual quandrant,1-1/2 inch long standoff bracket <br />j.Extension Pin:1/2 inch diagonal glass reinforced polymer extends 3-1/2 inch beyond <br />frame <br />5.Manufacturers: <br />a.Greenheck MBD-15 <br />b.Ruskin <br />c.Nailor <br />G.Quadrants: <br />1.Provide locking,indicating quadrant regulators on single and multi-blade dampers. <br />2.On insulated ducts mount quadrant regulators on stand-off mounting brackets,bases,or <br />adapters. <br />3.Where rod lengths exceed 30 inches provide regulator at both ends. <br />2.08 MISCELLANEOUS PRODUCTS <br />A.Internal Strut End Plugs: Combination end-mounting and sealing plugs for metal conduit used as <br />internal reinforcement struts for metal ducts;plug crimped inside conduit with outside gasketed <br />washer seal. <br />B.Duct Opening Closure Film: Mold-resistant,self-adhesive film to keep debris out of ducts during <br />construction. <br />1.Thickness: 2 mils. <br />2.High tack water based adhesive. <br />3.UV stable light blue color. <br />4.Elongation Before Break: 325 percent,minimum. <br />5.Manufacturers: <br />a.Carlisle HVAC Products​;Dynair Duct Protection Film​ <br />b.Surface Shields <br />c.Trimaco <br />d.Ductmate ProGuard <br />e.Or Approved Equal <br />PART 3 EXECUTION <br />3.01 INSTALLATION <br />A.Install accessories in accordance with manufacturer's instructions,NFPA 90A,and follow <br />SMACNA (DCS).See Section 23 31 00 for duct construction and pressure class. <br />B.Provide a pre-manufactured support at each diffuser to turn the flex duct into a 90°elbow. <br />Docusign Envelope ID: D4F3B98E-0756-4A0C-A3AD-05AA32D39F1C