Greenheck Fan dimensions Pressure Drop Data OFSD-312, Amca Test Figures

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Pressure Drop Data

OFSD-312

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/ft3 (1.201 kg/m3).

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.

5D

Figure 5.3

5D

6D

D4 (W) (H)

3.14

Figure 5.2

Figure 5.5

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Contents Model OFSD-312 Out of Wall Combination Fire Smoke DampersPressure Drop Data OFSD-312 Amca Test FiguresAmca 5.2 Pressure Drop OFSD-312 In. wgAmca 5.3 Pressure Drop OFSD-312 Amca 5.5 Pressure Drop OFSD-312 Actuator Space Envelopes SpecificationsApplication Data OFSD-312 Sleeve Information