Application and Design
The ES-30 series is a vertical mounted backdraft damper that is
designed to allow horizontal airflow and prevent reverse airflow.
The damper is opened by air pressure differential and closed by
gravity.
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
/
8
in. (3mm) aluminum.
Blade Seals:
Vinyl.
Size Limitations
Minimum Size
(without weights)
:
4 in.W x 4 in. H
(102mm x 102mm)
Minimum Size
(with weights)
:
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
•
1
1
/
2
in. (38mm) Flange On Discharge: ES-31
•
1
1
/
2
in. (38mm) Flange On Intake:
ES-32
• Counterbalance Weights
• Pull Chain Actuator
• Wing Nut Actuator
DAMPERS AND LOUVERS
*W & H dimensions furnished approximately
1
/
4
in. (6mm) under size.
ES-30 SERIES
Vertical Mount - Horizontal Airflow
Extruded
BACKDRAFT DAMPER
W*
H*
3"
2" Max.
2"
3"
2" Max.
2"
3"
2" Max.
2"
3"
2" Max.
2"
ES-30
No Flange
3"
2" Max.
2"
ES-32
Flange On Intake
3"
2" Max.
2"
ES-31
Flange On Discharge
1
1
/
2
"
1
1
/
2
"
3"
2" Max.
2"
3"
2" Max.
2"
3"
2" Max.
2"
3"
2" Max.
2"
ES-30
No Flange
3"
2" Max.
2"
ES-32
Flange On Intake
3"
2" Max.
2"
ES-31
Flange On Discharge
1
1
/
2
"
1
1
/
2
"
ES-30
ES-31
ES-32
No Flange
Flange on Discharge
Flange on Intake
NOTE: Optional counterbalance weights shown.
Note: Counterbalance weights may require field adjustment. Instructions are available at www.greenheck.com.
