Application and Design The series is a general purpose, low leakage control damper intended for application in low pressure and velocity systems. atings Pressure: 2 in. wg (.5 kpa) - pressure differential. Velocity: 1500 fpm (7.6 m/s) Leakage: 6 cfm/ft 2 @ 4 in. wg (110 cmh/m 2 @ 1 kpa) 3 cfm/ft 2 @ 1 in. wg (55cmh/m 2 @.25 kpa Temperature: 180 F (82º C) Low Leakage control damper Model H* Construction Standard Optional Frame Material Galvanized - Steel Frame Thickness 16 ga. - Frame Type 5 in. x 1 in. - Channel Blade Material Galvanized - steel Blade Thickness 16 ga. - Blade Type 3V - Blade Operation Opposed Parallel Blade Seals TPE - Axle 1/2 in. dia. - Plated Steel Axle Bearings Synthetic Bronze, 304SS Linkage Material Plated Steel - Jamb Seal 304SS - Blade Operation 1 1 /4 in. max. (typical) W* * W&H dimension furnished approximately 1/4 in. (6mm) undersize. 1 1 /4 in. max. (typical) Size Limitations W x H Maximum Size Minimum Size Single Multiple Section Section Inches 6 x 6 48 x 60 84 x 60 mm 152 x 152 1219 x 1524 2134 x 1524 Features & Options Blade seals - pressure activated to produce tighter sealing. Linkage concealed in the frame Low profile head and sill are used on sizes less than 17 in. (432mm) Wide range of electric (120V, 24V, 240V) actuators, manual quadrant and pneumatic actuators available. Factory installation available. Sleeves available 5/8 in. - 2 in. (16mm - 51mm) flange available etaining angles 5 in. 5 in. Parallel Blades Opposed Blades of the AMCA Certified atings Programs. The AMCA Certified atings Seal applies to air performance Installation instructions available at www.greenheck.com.
Data This pressure drop testing was conducted in accordance with AMCA Standard 500-D using the three configurations shown. All data has been corrected to represent standard air at a density of.075 lb/ft 3 (1.201 kg/m 3 ). Actual pressure drop found in any HVAC system is a combination of many factors. This pressure drop information along with an analysis of other system influences should be used to estimate actual pressure losses for a damper installed in a given HVAC system. AMCA Test Figures Figure 5.3 Illustrates a fully ducted damper. This configuration has the lowest pressure drop of the three test configurations because entrance and exit losses are minimized by straight duct runs upstream and downstream of the damper. Figure 5.2 Illustrates a ducted damper exhausting air into an open area. This configuration has a lower pressure drop than Figure 5.5 because entrance losses are minimized by a straight duct run upstream of the damper. Figure 5.5 Illustrates a plenum mounted damper. This configuration has the highest pressure drop because of extremely high entrance and exit losses due to the sudden changes of area in the system. 6D D 4 (W) (H) 3.14
AMCA 5.2 Figure 5.2 * 12 in. x 12 in. (305mm x 305mm) 24 in. x 24 in. (610mm x 610mm) 36 in. x 36 in. (914mm x 914mm) 12 in. x 48 in. (305mm x 1219mm) 500 0.04 500 0.02 500 0.01 500 0.01 1000 0.14 1000 0.07 1000 0.04 1000 0.06 1500 0.31 1500 0.16 1500 0.09 1500 0.13 2000 0.55 2000 0.29 2000 0.16 2000 0.23 2500 0.86 2500 0.45 2500 0.25 2500 0.36 3000 1.24 3000 0.65 3000 0.36 3000 0.52 3500 1.69 3500 0.89 3500 0.49 3500 0.70 4000 2.20 4000 1.16 4000 0.64 4000 0.92 48 in. x 12 in. (1219mm x 305mm) 500 0.03 1000 0.10 1500 0.23 2000 0.41 2500 0.63 3000 0.91 3500 1.24 4000 1.62 of the AMCA Certified atings Programs. The AMCA Certified atings Seal applies to air performance
AMCA 5.3 6D Figure 5.3 12 in. x 12 in. (305mm x 305mm) 24 in. x 24 in. (610mm x 610mm) 36 in. x 36 in. (914mm x 914mm) 12 in. x 48 in. (305mm x 1219mm) 500 0.02 500 0.01 500 0.01 500 0.01 1000 0.09 1000 0.04 1000 0.03 1000 0.04 1500 0.20 1500 0.09 1500 0.06 1500 0.10 2000 0.36 2000 0.16 2000 0.11 2000 0.17 2500 0.56 2500 0.25 2500 0.17 2500 0.27 3000 0.81 3000 0.35 3000 0.24 3000 0.39 3500 1.10 3500 0.48 3500 0.33 3500 0.53 4000 1.44 4000 0.63 4000 0.42 4000 0.70 48 in. x 12 in. (1219mm x 305mm) 500 0.02 1000 0.07 1500 0.16 2000 0.29 2500 0.45 3000 0.64 3500 0.88 4000 1.14 of the AMCA Certified atings Programs. The AMCA Certified atings Seal applies to air performance
AMCA 5.5 12 in. x 12 in. (305mm x 305mm) 24 in. x 24 in. (610mm x 610mm) 36 in. x 36 in. (914mm x 914mm) 12 in. x 48 in. (305mm x 1219mm) 500 0.06 500 0.03 500 0.03 500 0.03 1000 0.22 1000 0.14 1000 0.12 1000 0.13 1500 0.50 1500 0.31 1500 0.26 1500 0.30 2000 0.89 2000 0.54 2000 0.46 2000 0.53 2500 1.39 2500 0.85 2500 0.73 2500 0.83 3000 2.00 3000 1.22 3000 1.05 3000 1.19 3500 2.72 3500 1.66 3500 1.42 3500 1.62 4000 3.55 4000 2.17 4000 1.86 4000 2.11 48 in. x 12 in. (1219mm x 305mm) 500 0.04 1000 0.17 1500 0.38 2000 0.67 2500 1.04 3000 1.50 3500 2.05 4000 2.67 of the AMCA Certified atings Programs. The AMCA Certified atings Seal applies to air performance
Leakage specifications Leakage Data Model is available with TPE blade seals and stainless steel jamb seals only. Leakage testing was conducted in accordance with AMCA Standard 500-D and is expressed as cfm/ft 2 of damper face area. All data has been corrected to represent standard air at a density of 0.075 lb/ft 3 (1.204 kg/m 3 ). Static Pressure Difference 8.5 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 150 Air Leakage (cfm/ft 2 ) Multi-Section Assembly Dampers larger than the maximum single section size, will be made up of a multiple of equal size sections. Multiple section dampers will be connected together (in the field) by a crossover bracket so that all sections operate together as shown. NOTE: Dampers larger than 48 in. x 60 in. (1219mm x 1524mm) are not intended to be structurally self supporting. Additional horizontal bracing is recommended to support the weight of the damper and vertical bracing should be installed as required to hold against system pressure. NOTE: Temperatures in excess of 180 F (82ºC) require special consideration. Specifications Control dampers meeting the following specifications shall be furnished and installed where shown on plans and/or as described in schedules. Damper blades shall be 16 ga. (1.5mm) galvanized steel 3 Vee type with three longitudinal grooves for reinforcement. Blades shall be completely symmetrical relative to their axle pivot point, presenting identical resistance to airflow and operation in either direction through the damper (blades that are non-symmetrical relative to their axle pivot point or utilize blade stops larger than 1/2 in. [13mm] are unacceptable). Blade seals shall be TPE. Linkage shall be blade-toblade concealed in jamb (out of the airstream) to protect linkage and reduce pressure drop and noise. Damper frame shall be 16 ga. (1.5mm) galvanized steel formed into a structural hat channel shape with reinforced corners. Bearings shall be corrosion resistant, permanently lubricated, synthetic (acetal) sleeve type rotating in extruded holes in the damper frame for maximum service. Axles shall be square and positively locked into the damper blade. Jamb seals shall be stainless steel compression type to prevent leakage between blade end and damper frame. The Damper Manufacturer s submittal data shall certify all air performance pressure drop data is licensed in accordance with the AMCA Certified atings Program for Test Figures 5.2, 5.3 and 5.5. Damper air performance data shall be developed in accordance with the latest edition of AMCA Standard 500-D. Damper manufacturer's printed application and performance data including pressure, velocity and temperature limitations shall be submitted for approval showing damper suitable for pressures to 2 in. wg (.5 kpa), velocities to 1500 fpm (7.6 m/s) and temperatures to 180 F (82ºC). Testing and ratings to be in accordance with AMCA Standard 500-D. Basis of design is Greenheck model. Copyright 2010 Greenheck Fan Corporation ev. 8 May 2010