TED50GS (GENSET) Damper

Furnish and install, where shown on plans and/or as indicated in schedules thermally efficient control dampers meeting the following minimum specifications. Damper shall be Ruskin TED50GS. Damper frame shall be constructed of 6063T6 high yield extruded aluminum with a minimum wall thickness of .07” (2) and a yield stress of no less than 30,000psi. Low pressure drop aerodynamically shaped blades shall be constructed of 6063T6 high yield extruded aluminum with a minimum wall thickness of .07 (2) and a yield stress of no less than 30,000psi. Blades shall be filled with Polyurethane structural foam with a minimum density of 15 pcf. Insulated blades shall include a thermal break positioned between two blade seals to completely eliminate a thermal path from one side of the damper to the other. Thermal breaks on the blade edges shall not be visible when the damper is in the closed position. Damper assembly shall have a symmetrical design to ensure the resistance to airflow is identical from either direction. Axles shall be 1/2” (13) hexagonal plated steel material. Stainless steel axles shall be utilized when noted on the plans. Polycarbonate bearings shall be formed to the shape of the axle to reduce leakage through the frame. Bearings shall rotate inside an Acetal Copolymer outer bearing surface to reduce torque and promote a smooth operation throughout the stroke of the damper. Zero tolerance Swedgelock™ linkage arms shall be permanently and mechanically secured to each axle, eliminating future need for field adjustment of the linkage assembly. Linkage assembly shall be set to predetermined parameters ensuring leakage performance for the life of the product. Linkage shall be completely concealed within the damper frame, out of the airstream. Stainless steel linkage of the same design shall be used when specified on the plans. Blade edge seals shall be extruded Santoprene™ and shall be mechanically fastened to the blades. Jamb seals shall be low profile, light prohibiting, extruded Santoprene™ secured in extruded pockets of the damper frame. Stainless steel jamb seals creating a thermal path from one side of the blade to the other are not permitted. Damper shall be suitable for pressures up to 6 inches water gage (1.5kPa), velocities up to 4,000 fpm (20.3 m/s), standard air leakage of less than 8 cfm/ft2  at 4 inches water gage (2.44 cmm/m2  at 1 kPa), temperature range of -45°F to 185°F (-43°C to 85°C) and an R value no less than 2.16. All performance data shall be submitted to engineer of record for approval. Damper leakage, performance shall be in accordance with the latest edition of AMCA 500-D, and shall be tested and licensed in accordance with AMCA 511 for Air Performance and Air Leakage. Damper widths from 12” to 48” (305 to 1219) wide shall not leak any greater than 3 cfm/sq.ft. at 1” w.g. (15.2 l/s-m2  at .25 kPa). Damper shall be factory equipped with fast acting 8-second spring return electric actuator with 40,000 open/closed cycle testing and shall be equivalent in all respects to Ruskin Model TED50GS.