Data Sheet for Product

OpenAir™ Non-Spring Return, 24 Vac, Floating Control, Rotary, Electric Damper Actuator Technical Instructions
Document No. 155-188P25
May 22, 2014
Siemens Industry, Inc. Page 7
Mounting and
Installation
You must place the actuator on the damper shaft so that the front of the actuator is
accessible. The label is on the front side.
The minimum damper drive shaft length is 3/4-inch (20 mm).
1/2-inch Ø Guide
Factory Installed
3/8-inch Ø
Use shaft insert supplied
for any 3/8-in (8 - 10 mm)
diameter shaft
5/8-inch Ø
NOTE: For all damper shafts with the exception of the 1/2-inch round shaft:
Remove 1/2-inch Ø guide before installation.
Figure 15. Damper Shaft Sizes.
• A mounting bracket is included with the actuator.
• Observe the service envelope around the actuator as shown in
XFigure 25X.
• Detailed mounting instructions are included with each actuator.
Manual override
To move the damper blades and lock the
position with no power present:
1. Slide the red manual override knob
toward the back of the actuator.
2. Make adjustments to the damper
position.
3. Slide the red manual override knob
toward the front of the actuator.
Once power is restored, the actuator returns
to automated control
.
Figure 16. Manual Override.
Mechanical range
adjustment
1. Loosen the stop set
screw.
2. Move the screw along
the track to the desired
position, and fasten it in
place.
Figure 17. Moving the Mechanical Range Stop.
1
2