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DocuSign Envelope ID: B94F2D40-3B3C-47A7-86C2-6F1 B4F92C62C <br /> Orange County Emergency Services Building Construction Documents <br /> 1. Nailor Industries Inc: www.nailor.com. <br /> 2. Ruskin Company: www.ruskin.com. <br /> 3. Greenheck <br /> 4. Pottorff <br /> 5. Johnson Controls <br /> 6. Air Balance, Inc. <br /> B. Fabricate in accordance with SMACNA(DCS)and as indicated. <br /> C. Single Blade Dampers: <br /> 1. Fabricate for duct sizes up to 6 by 30 inch. <br /> 2. Blade: 24 gage, 0.0239 inch, minimum. <br /> D. Multi-Blade Damper: Fabricate of opposed blade pattern with maximum blade sizes 8 by 72 inch. <br /> Assemble center and edge crimped blades in prime coated or galvanized channel frame with <br /> suitable hardware. <br /> 1. Blade: 18 gage, 0.0478 inch, minimum. <br /> E. End Bearings: Except in round ducts 12 inches and smaller, provide end bearings. On multiple <br /> blade dampers, provide oil-impregnated nylon, thermoplastic elastomer, or sintered bronze <br /> bearings. <br /> F. 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 /> 2.07 MISCELLANEOUS PRODUCTS <br /> A. 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. Manufacturers: <br /> a. Carlisle HVAC Products; Dynair Duct Protection Film: www.carlislehvac.com/. <br /> b. Surface Shields <br /> c. Trimaco <br /> PART 3 EXECUTION <br /> 3.01 INSTALLATION <br /> A. Install accessories in accordance with manufacturer's instructions, NFPA 90A, and follow SMACNA <br /> (DCS). Refer to Section 23 31 00 for duct construction and pressure class. <br /> B. Provide backdraft dampers on exhaust fans or exhaust ducts nearest to outside and where <br /> indicated. <br /> C. Provide duct access doors for inspection and cleaning before and after filters, coils, fans, automatic <br /> dampers, at fire dampers, combination fire and smoke dampers, and elsewhere as indicated. <br /> Provide for cleaning kitchen exhaust ducts in accordance with NFPA 96. Provide minimum 12 by <br /> 12 inch size for hand access, size for shoulder access, and as indicated. Provide 8 by 8 inch for <br /> balancing dampers only. Review locations prior to fabrication. <br /> D. Provide duct test holes where indicated and required for testing and balancing purposes. <br /> E. Provide fire dampers at locations indicated, where ducts and outlets pass through fire rated <br /> components. Install with required perimeter mounting angles, sleeves, breakaway duct <br /> connections, corrosion resistant springs, bearings, bushings and hinges. <br /> F. Demonstrate re-setting of fire dampers to Owner's representative. <br /> G. At fans and motorized equipment associated with ducts, provide flexible duct connections <br /> immediately adjacent to the equipment. <br /> H. At equipment supported by vibration isolators, provide flexible duct connections immediately <br /> adjacent to the equipment. <br /> PDC Project 18102 AIR DUCT ACCESSORIES 23 33 00 - 3 <br /> 12/17/2018 <br />