User Guide

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MODEL ND Series Dampers
Construction-
Heavy Duty extruded aluminum.
Nylon Bearings for quiet operation.
Overlapping parallel blades for low leakage.
Power open/Power closed.
Designed to operate at static pressures up to 1.5”
w/ less than 5% Leakage.
UL Listed Motor Actuator is a 24vac 3 wire power
open/ power close type rated at 18”lbs. of torque.
NEMA1 Rated Housing.
End-Stops for Min/Max Travel Adjustments.
LED’s Indicate damper position.
Available in 8" x 6" thru 30" x 30" in one inch
increments. Custom Sizes can be manufactured,
contact EWC Controls Inc.
Listed Size Less 3/16
DIMENSIONAL
DRAWINGS
Listed Size Less 3/16
4"
6"
Positional Indicator
not attached for clarity
COM
PO
PC
Excellence Without Comprimise
wC
E
CONTROLS INC.
MA-ND4
24 VAC 50/60Hz 1.5VA 1W
18 in-lb (2Nm) 35s
MANUAL
GEAR
!
Class2
Supply
CLOSED
OPEN
0 1
PC
PO
COM
1 4 6
Model ND
w/ MA-ND4 Actuator
385 Hwy. 33
Englishtown, NJ 07726
Ph: 800-446-3110
Fx: 732-446-5362
SUBMITTAL SHEET
P/N 090377A0071 REV. L
CONTROLS INC.
E
W
Excellence Without Compromis
e
Forced Air Zone Controls
Copyright © EWC Controls 2005-2008 All Rights Reserved
SUBMITTAL FORM
SUBMITTED BY:
JOB:
ARCHITECT:
ENGINEER:
CONTRACTOR:
LOCATION:
®
0 1
END STOP ADJUSTMENT
-LOOSEN PHILIPS
HEAD SCREW
-MOVE END-STOP
TO DESIRED POSITION
-TIGHTEN PHILIPS
HEAD SCREW