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Determining Damper Shaft Direction of Rotation
Before mounting the actuator onto the shaft, users will need to determine the direction the shaft rotates in
order to open the damper (clockwise/cw or counter-clockwise/ccw). By default, the
is configured to open the damper in a clockwise/cw rotation. To change the rotation, digital set point
DampReverse (D230)
Damper Adaption (CBV-2U4-3T only)
Damper Adaption is a process whereby the actuator will drive one full cycle to its mechanical end-stop, after
which the actuator's working range will be adapted to the actual mechanical angle of rotation. This can be
initiated by either
1.
toggling
DamperAdaption(D225)
2.
pressing the manual override button on the actuator once.
In the VAV actuator block in the Strategy, the
...
based on a CW/CCW switch. The integrated actuator in
0
100
so this
damper synchronization
DamperAdaption(D225)
Mounting controller to VAV box
Use the following steps for mounting the
1.
The controller is designed for two-point mounting, with one point being the damper shaft. Attach the
CBV-2U4-3T(-N)
containing the "U" mounting bracket.
Do NOT tighten it to the shaft at this time.
Note:
2.
The controller has a mounting tab to the right side of controller. Ensure that the controller is positioned
correctly and is in its final position. When positioned correctly, finish fastening the controller to the VAV
box by screwing in the supplied screw through the mounting tab into the VAV box.
3.
Before tightening the controller to the damper shaft, rotate the VAV damper blade to the closed
position.
4.
While pushing in the Damper Manual Override button (located on the front of actuator), rotate the hub
to the full closed position.
5.
Tighten the "U" mounting bracket to the damper shaft.
6.
Using Polyethylene plenum-rated pneumatic tubing (not supplied), connect the airflow sensor on the
CBV-2U4-3T(-N)
side of the
CBV-2U4-3T(-N)
pressure/P2" side of the
connection of the VAV box.
An inline filter should be installed between the "high pressure/P1" input and the high pressure of the airflow
Note:
device.
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R/W will need to be set to on (default off).
to
then
ON
damper synchronization
option simply cycles the damper from
binary point will accomplish the same thing.
CBV-2U4-3T(-N)
to the shaft of the VAV damper by slipping the damper shaft through the round hole
to the velocity pickup station on the VAV box. Be sure to connect the "high pressure/P1"
to the "High" or "Total Pressure" connection of the VAV box. The "low
CBV-2U4-3T(-N)
Installation Overview
CBV-2U4-3T(-N) |
, or
OFF
option will also modulate the damper from
CBV-2U4-3T
on the VAV box.
needs to be connected to the "Low" or "Static Pressure"
CBV-2U4-3T(-N)
controller
does not have a CW/CCW switch,
to
. Toggling the
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9
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