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Fabricante : Greenheck Fan
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The damper is opened by air pressure differential and closed by gravity. Standard models include adjustable counterbalance weights to assist closing. Ratings (See page 2 for specific limitations) Pressure: 2.5 in. wg (622 Pa) - differential pressure Velocity: 2000 fpm (10.2 m/s) Temperature: 180°F (82°C) Standard Construction Frame: 6063T5 extruded aluminum (0.063 in. [1.6mm] thickness) Blades: 6063T5 extruded aluminum. (0.050 in. [1.3mm] thickness) Axle Bearings: Synthetic polycarbonate sleeve type Linkage: V8 in. (3mm) aluminum Blade Seals: Vinyl Size Limitations Minimum Size: 6 in. W x 8 in. H (152mm x 203mm) Maximum Size: 40 in. W x 52 in. H (1016mm x 1321mm) Options and Accessories • 11/2 in. (38mm) flange on discharge: ES-41 • 11/2 in. (38mm) flange on intake: ES-42 • Pull Chain Actuator • Wing Nut Actuator *W & H dimensions furnished approximately 1/4 in. (6mm) under size. Ji_ 2" Max. 2" ~T~ 3" ES-40 No Flange 11/2" ► k-1V2" ES-41 Flange On Discharge ES-42 Flange On Intake Note: Counterbalance weights may require field adjustment. Instructions are available at Performance Data ES-40 Leakage Leakage testing was conducted in accordance with AMCA Standard 500-D and is expressed as CFM per sq. ft. of damper face area. All data has been corrected to represent standard air at 0.075 lb/ft3 (1.201 kg/m3). Pressure Drop Performance data results from testing a 36” x 36” damper in accordance with AMCA Standard 500-D using Figure 5.7A (no duct either side). All data has been corrected to represent standard air at 0.075 lb/ft3 (1.201 kg/m3). Leakage 36” x 36” Damper Pressure Drop 36” x 36” Damper