Product Overview

Model RSD is a round single blade damper constructed from heavy (24) gauge galvanized steel.
The 24 volt motor actuator is direct coupled to the drive shaft. It is power closed/spring open
(standard). The damper can be field reversed to a power open/spring closed model. The RSD
damper may be used with either flexible or rigid ductwork. The RSD has a double layered blade
design with an integrated cellular foam gasket to provide a seal when the damper is in the closed
position. The RSD also has a Travel Limiter to prevent the damper from closing 100% if your
application requires.
4.0”
5.0”
6.0”
7.0”
8.0”
9.0”
10.0”
11.0”
12.0”
13.0”
14.0”
15.0”
16.0”
18.0”
20.0”
12.00”
12.00”
12.00”
12.00”
12.00”
12.00”
12.00”
14.00”
14.00”
16.00”
16.00”
20.00”
20.00”
20.00”
20.00”
Forced Air Zone Controls
Model RSD
Round Spring-Return Damper
SUBMITTAL SHEET
385 Hwy. 33 Englishtown, NJ 07726
Ph: 800-446-3110 - Fx: 732-446-5362
CONTROLS INC.
Excellence Without Compromise
P/N 090377A0123 REV. C Copyright © EWC Controls 2006-2007 All Rights Reserved
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DIMENSIONS
MODEL # A B
TRAVEL LIMIT
50% 75% 100%
RSD
14”
EWC
CONTROLS INC.
385 HIGHWAY 33, ENGLISHTOWN, NJ 07726
[phone] * FAX: [phone]
CAUTION
Do not operate
Damper manually,
doing so may
damage motor
EWC Controls, Inc.
385 Highway 33
Englishtown, N.J. 07726
1-800-446-3110
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REV. A
MODEL
MOTOR
MA-RSD
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B
A
RSD-4
RSD-5
RSD-6
RSD-7
RSD-8
RSD-9
RSD-10
RSD-11
RSD-12
RSD-13
RSD-14
RSD-15
RSD-16
RSD-18
RSD-20
TRAVEL LIMIT
50% 75% 100%
TRAVEL LIMIT ADJUSTMENT
-LOOSEN BOLT
-SLIDE BOLT TO DESIRED LOCATION
-TIGHTEN BOLT
3.04”