Submittal Sheet
Table Of Contents
35 AND 70 LB-IN. NON-SPRING RETURN DIRECT COUPLED ACTUATORS
5 63-2209—9
CAUTION
Equipment Damage Hazard.
Mounting actuator unevenly with damper housing 
can damage actuator.
Mount actuator flush with damper housing or add 
spacer between mounting tab and damper box housing 
(see Fig. 2).
Fig. 2. Mounting actuator to VAV box when 
actuator is not flush with box.
Preparation
Before mounting the actuator onto the shaft, determine the 
following:
1. Size of the shaft [3/8 in. to 1/2 in. (10 mm to 13 mm)].
2. Direction the shaft rotates to open the device (cw or 
ccw). See Fig. 4.
3. Degrees of actuator stroke for opening device (45°, 60°, 
or 90°).
If the shaft is 3/8 in. (10 mm) round or square, use part number 
201391 Shaft Adapter provided inside the bag assembly 
shipped with the actuator. Place the adapter opposite the 
setscrews (see Fig. 3).
Fig. 3. Using shaft adapter for 3/8 in. (10 mm) shafts.
Fig. 4. Determining direction damper 
shaft rotates when opening.
Manual Operation (Declutch)
CAUTION
Product Damage Hazard.
Do not use manual declutch without supporting the 
load.
Support actuator load independently immediately 
before and during use of manual declutch lever.
Manual declutch capability is available on some actuators. Use 
the manual declutch lever to manually adjust the actuator 
setting. Fig. 5 shows the location of the manual declutch lever. 
To operate, push the lever in the direction of the arrow on the 
lever cover.
Fig. 5. Location of manual declutch lever.
ADD SPACER BETWEEN
DAMPER BOX AND TAB
DAMPER
SHAFT
ML6161
ML6174
VAV BOX HOUSING
M11624A
SHAFT ADAPTER
M2064
A
IR 
FLOW
A
IR 
FLOW
CW TO OPEN, CCW TO CLOSE
CCW TO OPEN, CW TO CLOSE
M2067B
TYPE A DAMPER
TYPE B DAMPER
M10076B
MANUAL 
DECLUTCH
LEVER
ROTATION
REVERSAL SWITCH
60 
60 










