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Performance Data
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/ft
36" x 36" Damper
15
10
9
8
7
6
5
4
3
2
1.0
.9
.8
.7
.6
.5
.4
.3
.2
1
2
3
4
5
Air Leakage in CFM/Sq. Ft.
Specifications
Backdraft dampers meeting the following specifications
shall be furnished and installed where shown on plans and/
or as described in schedules. Dampers shall consist of:
6063T5 extruded aluminum channel frame (0.063 in. [1.6mm]
thick) with 2 in. (51mm) depth; blades from 0.050 in. (1.3mm)
6063T5 extruded aluminum; synthetic polycarbonate axle
bearings; damper shall be equipped with extruded vinyl blade
seals; and internal
1
/
in. (3mm) aluminum linkage. Damper
8
3
(1.201 kg/m
).
3
Leakage
ES
6 7 8 9 10
20
30
40
50 60 70 80 90 100
Operational Data
Blades Start to Open
Blades Fully Open
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/ft
10
9
8
7
6
5
4
3
2
1.0
.9
.8
.7
.6
.5
.4
.3
.2
.10
.09
.08
.07
.06
.05
.04
.03
.02
150
1
2
3
4
5 6 7 8 9 10
x 10
ÆP in. wg
Velocity
(Pa)
fpm (m/s)
0.075 (18.7)
110 (.56)
0.30 (74.7)
1150 (5.8)
manufacturer's printed application and performance data
including pressure, velocity and temperature limitations
shall be submitted for approval showing damper suitable
for pressures to 2.5 in. wg (623 Pa), velocities to 2000 fpm
(10.2m/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 ES-40.
Copyright © 2008 Greenheck Fan Corporation
ES-40
3
(1.201 kg/m
).
3
Pressure Drop
36" x 36" Damper
2
3
4
5 6 7 8 9 10
2
3
x 100
Velocity (fpm)
ES-40 Rev 3 Aug 2008
4
5 6 7 8 9 10
x 1000
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