Model URD Round Damper Forced Air Zone Controls with MA ... - EWC
?
Forced Air Zone Controls
SUBMITTAL SHEET
Model URD Round Damper
with MA-ND5 Actuator
The URD series of round motorized dampers are a double layered blade design with an integrated
Poron? sealing gasket. The superior design insures long life and zero maintenance. URD dampers
are easy to install, easy to wire up, and come with a 5 year warranty. The URD damper is constructed
of heavy 24 gauge galvanized steel with factory rolled stiffening beads. The nylon bearings and
ThermoTuff? drive shafts insure smooth, quiet operation and provide a thermal barrier to the motor.
The URD is designed to operate reliably at static pressures up to 1.5¡± w.c. The UL Listed MA-ND5
Actuator is a 24vac 3 wire power open / power close type rated at 18 ¡° lbs. of torque. It includes an
integrated wiring terminal block, and a NEMA1 rated housing. The MA-ND5 motor features bright
Green and Red LED's which correspond to the OPEN and CLOSED position of the blade. The motor
also includes adjustable End-Stops for Min/Max blade position, that allows for field balancing of the
full or minimum CFM flow, into a particular zone or area. The Position LED¡¯s will illuminate regardless
of the End Stop positions.
NOMINAL DIMENSIONS
MODEL #
2.75¡±
A
B
0
1
A
B
URD - 4
4.00¡±
10.00¡±
40 CFM
URD - 5
5.00¡±
10.00¡±
70 CFM
URD - 6
6.00¡±
12.00¡± 110 CFM
URD - 7
7.00¡±
12.00¡± 160 CFM
URD - 8
8.00¡±
12.00¡± 230 CFM
URD - 9
9.00¡±
12.00¡± 310 CFM
URD - 10
10.00¡±
12.00¡± 410 CFM
URD - 12
12.00¡±
14.00¡± 650 CFM
URD - 14
14.00¡±
16.00¡± 1000 CFM
URD - 16
16.00¡±
20.00¡± 1400 CFM
URD - 18
18.00¡±
20.00¡± 2000 CFM
URD - 20
20.00¡±
20.00¡± 2500 CFM
END STOP ADJUSTMENT
Excellence Without Comprimise
EwC
-LOOSEN PHILIPS
HEAD SCREW
-MOVE END-STOP
TO DESIRED POSITION
-TIGHTEN PHILIPS
HEAD SCREW
CONTROLS INC.
MA-ND5
24 VAC 50/60Hz
18 in-lb (2Nm)
MANUAL
GEAR
RELEASE
!
1.5VA 1W
35s
Class2
Supply
OPEN
COM
PO
PC
1
4
6
Excellence Without Compromise
EWC
CONTROLS INC.
.1¡± WC
0
CLOSED
385 Hwy. 33
Englishtown, NJ 07726
Ph: 800-446-3110
Fx: 732-446-5362
SUBMITTAL FORM
SUBMITTED BY:
JOB:
ARCHITECT:
ENGINEER:
CONTRACTOR:
LOCATION:
P/N 090377A0068 REV. Y 05.07.20
Copyright ? 2000 EWC Controls Inc., All Rights Reserved.
1
?
Forced Air Zone Controls
SUBMITTAL SHEET
Model URD Round Damper
with MA-ND5 Actuator
WIRING SOLUTIONS
Motor Actuator Terminals
DESCRIPTION
24v Common
24v Power to Open
24v Power to Close
TERMINAL
1 / COM
4 / PO
6 / PC
Wiring a Thermostat to Control a Single Damper
MA-ND5
COM
1
PO
PC
4
6
C
MODEL
T40-VA
TO
PRIMARY
R
24VAC 40VA
TRANSFORMER
OR
EQUIVALENT
Wiring to a Zone Control Panel
MA-ND5
ZONE CONTROL
DAMPER OUTPUT
PC M6
M6
PO M4
COM M1
M4
M2
JUMPER
Y
W
R
G
EWT THERMOSTAT
1 HEAT / 1 COOL
OR
EQUIVALENT
M1
Wiring in Parallel
ZONE CONTROL
DAMPER OUTPUT
M6
M4
M2
M1
MA-ND5
MA-ND5
MA-ND5
PC M6
PC M6
PC M6
PO M4
COM M1
PO M4
COM M1
PO M4
COM M1
Excellence Without Compromise
EWC
CONTROLS INC.
385 Hwy. 33 Englishtown, NJ 07726
Ph: 800-446-3110 - Fx: 732-446-5362
P/N 090377A0068 REV. Y 05.07.20
Copyright ? 2000 EWC Controls Inc., All Rights Reserved.
................
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