The Modulating Round Damper, Model PCRDM, is a 24 Volt
AC, power open, power closed modulating damper. The
damper is constructed of 22 gauge galvanized steel formed
as a rigid spiral pipe and has a circular blade, that closes
tightly against a neoprene gasket seal.
The PCRDM can be used for zone control, fresh air intake,
ventilation or as the motorized damper for by-pass air when
controlled by the Static Pressure Switch, Model SPS or
Static Pressure Control, Model SPC. It is also designed to
also handle high velocity air conditioning systems up to
2”S.P.
The simple 3 wire motor has two light emitting diodes (LEDs)
to indicate the damper position. The RED LED is lit when the
damper is Closed and the Green is lit when the damper is
open. The MDM also has adjustable minimum and maximum
position stops inside the motor cover. This motor’s energy
saving design uses end switches to break power to the
motor once the motor reaches the end travel position. This
lengthens the motor life and conserves energy. The MDM
has been factory tested to over 500,000 cycles.
The PCRDM is available in 5”, 6”, 7”, 8”, 9”, 10”, 12”, 14”,
16”, 18” and 20” diameters.
Model MDM Motor with Position LEDs.
The MDM Actuator delivers up to 34 in/lbs of torque that
powers the PCRDM open and closed. This powerful motor
allows the damper to handle higher static pressures and can
be modulates using the SPS or SPC Static Pressure Switch
or similar type control.
The MDM is a reversible motor that powers the damper both
open and closed. It also has adjustable stops for minimum
and maximum damper position settings.
Modulating Round Damper
Model PCRDM
DIME
NSIONAL DRAWING –
All dimensions are nominal.
Damp
er Specifications
Construction – 22 Ga. Galvanized Steel
Linkage
– Di
rect Drive
Sizes
– 5”,
6”, 7”, 8”, 9”, 10”, 12”, 14”, 16”, 18”,
20”
M
otor Voltage
– 24 V
olts AC, 50/60 Hz, 0.16A
Motor Torque
– 34 i
n-lbs.
Temperature Rating – - 0nF to 120nF Operating, -20nF to 140nF
Storage
Humidity
– 5% t
o 95% Non-Condensing
Damper Timing
– Nom
inal 15 Sec. Powered
Connection: Screw Terminals
Duct Pressure –
Ma
ximum 4.0” W.C.
WIRING DIAGRAM
2”
10”
Listed
Diameter
7/8”
7/8”
6”
4
”
Closed/M6
24 Volt AC
Control
Common/M1
O
p
en/ M4
Specifications and illustrations subject to change without notice and without incurring
obligations. Printed in U.S.A. (03/11) 697D-0311
© Nortek Global HVAC LLC 2015. All Rights Reserved.
-
1
Ask a question and I''ll find the answer in the document
Finding information in a document is now easier with AI
Other documents
-
Trane S*HK*90-130 W*HB Troubleshooting Manual
-
-
-
Braeburn Power Open, Power Close Round Damper User manual
-
Hach SC200 User manual
-
-
SPC DERVDX Installation, Operating And Maintenance Instructions
-
-
-
York YPAL Series 100 Unit User guide