Brochure
Table Of Contents
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14
Motorized Dampers
Model URD & RSD
Round Dampers
Model URD and RSD are round, single blade dampers
with a shutoff seal that gives the damper a 98% closure.
The motor for the URD has no moving switches or parts
to burn out. The actuator possesses 17 in. lbs. of torque,
manual gear release and powered open/powered close
operations. The URD features “fail safe” LED’s that will
indicate the position of the blade without the need to cut
holes or remove the damper from the ductwork.
MODEL URD
MODEL RSD
The positional LED’s will only illuminate when the blade is in the
full open or full closed position. The RSD is a spring return motor.
The damper is field reversible from power closed/spring open to
power open/spring closed. The motor posesses 5” lbs. of torque.
The 18” and 20” RSD’s have a motor with 18” lbs. of torque.
MODEL SID
The Retrofit Solution
The SID (Slip-In-Damper) is the most user friendly
retrofit damper available. The 1.5VA actuator allows
up to 20 SID’s on one EWC Controls zone panel
with a 40va transformer. With a single cut the SID
can be installed in seconds. The optional S1A (see
page 17) end switch allows for increased flexibility.
Size List Price
4” $148.00
5” $148.00
6” $149.00
7” $153.00
8” $161.00
9” $177.00
10” $195.00
PRICING FOR BOTH URD & RSD
Size List Price Size List Price
4 URD $200.00 12 URD 222.00
6 URD 203.00 14 URD 255.00
7 URD 203.00 16 URD 295.00
8 URD 207.00 18 URD 356.00
9 URD 209.00 20 URD 400.00
10 URD 212.00
18 RSD 577.00
20 RSD 600.00
RESTRICTING HAND DAMPERS
The hand damper are used to restrict airflow
through the by-pass trunk during by-pass
operation.
Size List Price
8 RD-HD $113.00
10 RD-HD 119.00
12 RD-HD 127.00
14 RD-HD 160.00
16 RD-HD 166.00
18 RD-HD 190.00
Size List Price
12x8 ND-HD $145.00
12x10 ND-HD 160.00
12x12 ND-HD 167.00
20x8 ND-HD 168.00
20x10 ND-HD 180.00
20x12 ND-HD 188.00
RD-HD
ND-HD
Options:
URD-LF24 24 Volt - 35 in LBS - Spring Return Add $385.00
URD-LF120 120 Volt - 35 in LBS - Spring Return Add $395.00
URD-LM24SR-T Modulating Motor Add $250.00
URD-SRE 24V Spring Return w/ end switch Add $200.00
URD-SRE120 120V Spring Return w end switch Add $200.00
S1A End Switch for URD List $115.00
URD-L Round Damper with NO motor - 5/8” round shaft Deduct $30.00