Greenheck ES-40 Series User manual

Application and Design
The ES-40 series is a horizontally mounted backdraft damper
that is designed to allow vertical airflow down and prevent
reverse airflow. 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 (82ºC)
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: 1
/8in. (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 /2in. (38mm) flange on discharge: ES-41
 • 11 /2in. (38mm) flange on intake: ES-42
 • PullChainActuator
 • WingNutActuator
ES-40 SERIES
Horizontal Mount Vertical Airflow Down
*W & H dimensions furnished approximately 1 /4in. (6mm) under size.
Extruded BACKDRAFT DAMPER
W* H*
ES-40
NoFlange
ES-41
Flange On Discharge ES-42
Flange On Intake
2"
1 1 /2"
2"
1 1 /2"
3"
2" Max.
2"
3" 2" Max.
2"
2"
1 1 /2"
2"
1 1 /2"
3"
2" Max.
2"
3" 2" Max.
2"
2"
1 1 /2"
2"
1 1 /2"
3"
2" Max.
2"
3" 2" Max.
2"
2"
1 1 /2"
2"
1 1 /2"
3"
2" Max.
2"
3" 2" Max.
2"
Note:Counterbalanceweightsmayrequireeldadjustment.Instructionsareavailableatwww.greenheck.com.

ÆP in. wg Velocity
Operational Data (Pa) fpm (m/s)
Blades Start to Open 0.075 (18.7) 110 (.56)
Blades Fully Open 0.30 (74.7) 1150 (5.8)
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 /8in. (3mm) aluminum linkage. Damper
Velocity (fpm)
1
x 10
Pressure Loss ( In. w.g.)
10
9
8
7
6
5
4
3
2
2 3 4 5 6 7 8 910
1.0
.9
.8
.7
.6
.5
.4
.3
.2
.10
.09
.08
.07
.06
.05
.04
.03
.02
x 100
2 3 4 5 6 7 8 910
x 1000
2 3 4 5 6 7 8 910
Pressure Drop
36” x 36” Damper
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).
Leakage
36” x 36” 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 2.5 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.
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 Pressure Drop
Copyright © 2008 Greenheck Fan Corporation
ES-40Rev3Aug2008
Performance Data ES-40
1.0
.9
.8
.7
.6
.5
.4
.3
.2
15
10
9
8
7
6
5
4
3
2
Air Leakage in CFM/Sq. Ft.
1 2 3 4 5 6 7 8 910 20 30 40 50 60 70 80 90 100 150
ES
Static Pressure Difference (in. wg)