Honeywell Automobile Parts M847D User Manual

Direct Drive Damper Actuator  
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. 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.  
Table 1. Nominal Device Dimension  
Ambient Temperature Rating: 5 to 60° C (+40 to 140° F)  
Finish: zinc plated steel, anodized aluminium  
A
60  
B
C
88  
D
E
F
84.5  
3-3/8  
8.2  
31.5  
1-1/4  
19.3  
3/4  
mm  
in  
Direction of Shaft Rotation: clockwise, when energized and  
2-3/8  
3-1/2  
5/16  
viewed from the base or shaft end.  
Mounting Means: direct connection to damper shaft.  
Mounting Position: Multi-poise.  
Dimensions: See Figure 1.  
G
H
J
K
L
M
15.8  
5/8  
58.6  
29.3  
33.5  
6.4  
1/4  
40.4  
mm  
in  
2-5/16  
1-3/16  
1-5/16  
1-9/16  
*mNm = milli newton meter.  
95C-10905-02  
 
DIRECT DRIVE DAMPER ACTUATOR M847D  
1. When viewed on end, the lower lever is normally posi-  
tioned to the extreme left (See Fig. 4). This position  
allows the damper to fully open 90° when de-energized.  
2. To restrict the air flow in the open position, loosen (do  
not removed) the wing nut and move the lower lever to  
the right until the desired position is reached. Tighten  
the wing nut. In the extreme right position the damper  
should open approx. 50° with the power off.  
3. The upper lever is normally positioned to the right to  
provide complete shut off when the actuator is ener-  
gized (See Fig. 4).  
4. If desired, to prevent complete closure of the damper,  
loosen (do not remove) the wing nut on the bottom of  
the unit and move the upper lever to the left until the  
desired position is achieved. Tighten the wing nut. In the  
extreme left position the damper should close to approx.  
40° with the power on.  
Wiring  
See Figure 3 for typical wiring hook-ups of the M847D.  
ZONING SWITCH  
ORANGE  
YELLOW  
1
2
24 VAC  
60 HZ  
OPERATOR  
MOTOR  
1
2
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.  
NOMINAL CURRENT 0.32 AMP.  
M32381  
Fig. 3. Typical M847D Hookup.  
5. If additional rotation is required beyond 90°, an addi-  
tional 15° may be obtained by removing the Upper  
Lever. To do this, first remove the actuator from the  
damper. Remove the wing nut and retaining ring then  
remove the levers. Reassemble and install.  
CHECKOUT  
After completing the installation, check that the equipment  
operates correctly as follows:  
1. When 24 Vac is applied to the motor leads, the motor  
powers to the closed or open position.  
2. When power is removed, the motor releases and spring  
returns to the normal position.  
If full opening and closing is not achieved, check the lower  
adjustment lever is to the extreme left and the upper lever is to  
the extreme right. See Fig. 4 (Air Flow Adjustments).  
Air Flow Adjustments  
NOTE: The following describes the adjustments available  
with the actuator installed in the power closed  
mode. If the damper you are installing is to operate in  
the power open mode, the function of the upper and  
lower levers is reversed.  
Fig. 4. Air Flow Adjustment  
3
95C-10905—02  
 
DIRECT DRIVE DAMPER ACTUATOR M847D  
Automation and Control Solutions  
Honeywell International Inc.  
1985 Douglas Drive North  
Golden Valley, MN 55422  
customer.honeywell.com  
® U.S. Registered Trademark  
© 2010 Honeywell International Inc.  
95C-10905—02 T.D. Rev. 12-10  
Printed in U.S.A.  
 

Grizzly Planer G1017 User Manual
Haier Air Conditioner HWR05XCJ User Manual
Honeywell Security Camera HD3VC4SAX User Manual
Hotpoint Dishwasher FDD 914 User Manual
Hotpoint Washer WF840 User Manual
HP Hewlett Packard Laptop ze2300 User Manual
HP Hewlett Packard Tablet 2760p User Manual
Huey Chiao Headphones HCB12 User Manual
Hypertec Carrying Case N7048PHY User Manual
Image Car Speaker IMGE 5 User Manual