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Honeywell M847D Installation Instructions

Direct drive damper actuator
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Direct Drive Damper Actuator
M847D
APPLICATION
The M847D is a two position, 24 Vac spring return damper
actuator designed to operate directly driven zone dampers,
used to control air flow in ducts. The synchronous motor
actuator can be driven open (or closed) using any 24 volt
rated two position switch - e.g. a wall switch or a thermostat
subbase switch.
The M847D replaces the RDMH and RDMZ damper actuators
for use on Trol-A-Temp® ARD and ZD dampers.
SPECIFICATIONS
Electrical Rating: 24 Vac 60 Hz 0.32 Amp., 8 VA
Electrical Connection: 1/2" conduit
Nominal Angular Rotation: 90° (max. 105°)
Torque: Min. 423 mNm* (60 in. oz) output torque available
when motor is energized and device is at the spring
returned initial start position.
Nominal Motor Timing: ( @ 25° C ambient)
Energized at rated load - 30 seconds.
De-energized (spring return) - 10 seconds.
Ambient Temperature Rating: 5 to 60° C (+40 to 140° F)
Finish: zinc plated steel, anodized aluminium
Direction of Shaft Rotation: clockwise, when energized and
viewed from the base or shaft end.
Mounting Means: direct connection to damper shaft.
Mounting Position: Multi-poise.
Dimensions: See Figure 1.
*mNm = milli newton meter.
INSTALLATION INSTRUCTIONS
Table 1. Nominal Device Dimension
A
B
mm
60
84.5
in
2-3/8
3-3/8
G
H
mm
15.8
58.6
in
5/8
2-5/16
1-3/16
C
D
E
88
8.2
31.5
3-1/2
5/16
1-1/4
J
K
L
29.3
33.5
6.4
1-5/16
1/4
1-9/16
Put Bar Code Here
95C-10905-02
F
19.3
3/4
M
40.4

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  Summary of Contents for Honeywell M847D

  • Page 1 M847D INSTALLATION INSTRUCTIONS APPLICATION The M847D is a two position, 24 Vac spring return damper actuator designed to operate directly driven zone dampers, used to control air flow in ducts. The synchronous motor actuator can be driven open (or closed) using any 24 volt rated two position switch - e.g.
  • Page 2 ALTERNATE MOUNTING (For 7/16” dia. coupling style dampers) 1. Read these instructions carefully. Failure to follow them Before installing the M847D actuator to a damper with a 7/16” could cause a hazardous condition. coupling, insert the drive shaft extension into the drive shaft 2.
  • Page 3 1. When viewed on end, the lower lever is normally posi- tioned to the extreme left (See Fig. 4). This position See Figure 3 for typical wiring hook-ups of the M847D. allows the damper to fully open 90° when de-energized.
  • Page 4 DIRECT DRIVE DAMPER ACTUATOR M847D Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North ® U.S. Registered Trademark Golden Valley, MN 55422 © 2010 Honeywell International Inc. 95C-10905—02 T.D. Rev. 12-10 customer.honeywell.com Printed in U.S.A.