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DAMPER SHAFT
ROTATES
CLOCKWISE
TO OPEN
Fig. 2. Damper with 90 degree CW rotation to open.
Before Mounting Actuator onto Damper Shaft
(CP-VL0000AS, CP-VL4022AS, and CP-VL6436AS)
Tools required:
— Phillips #2 screwdriver - end-limit set screw adjustment
— 8 mm wrench - centering clamp
Before mounting the actuator onto the VAV box damper shaft,
determine the following:
1. Determine the damper shaft diameter. It must be
between 3/8 in. and 1/2 in. (10 to 13 mm).
2. Determine the length of the damper shaft. If the length
of the VAV box damper shaft is less than 1-9/16 in.
(40 mm), the actuator cannot be used.
3. Determine the direction the damper shaft rotates to
open the damper (CW or CCW) (see Fig. 3). Typically,
there is an etched line on the end of the damper shaft
that indicates the position of the damper. In Fig. 2, the
indicator shows the damper open in a CW direction.
4. Determine the damper full opening angle (45, 60, or 90
degrees). In Fig. 2, the damper is open to its full open
position of 90 degrees.
TYPE A DAMPER
AIR
FLOW
CW TO OPEN, CCW TO CLOSE
TYPE B DAMPER
AIR
FLOW
CCW TO OPEN, CW TO CLOSE
M2067B
Fig. 3. Determining the rotation direction (CW or CCW)
for damper opening.
COMFORTPOINT PROGRAMMABLE LON, VAV/UNITARY CONTROLLERS
Mounting Actuator onto Damper Shaft
(CP-VL0000AS, CP-VL4022AS, and CP-VL6436AS )
DAMPER
The unit is shipped with the actuator set to rotate open in the
clockwise (CW) direction to a full 95 degrees. The extra 5
degrees ensures a full opening range for a 90 degree damper.
The installation procedure varies depending on the damper
opening direction and angle:
1. If the damper rotates clockwise (CW) to open, and the
2. If the damper rotates clockwise (CW) to open, and the
M23569
3. If the damper rotates counterclockwise (CCW) to open,
4. If the damper rotates counterclockwise (CCW) to open,
3
angle of the damper open-to-closed is 90 degrees:
a. Manually open the damper fully (rotate clockwise).
b. Using the Declutch button, rotate the universal shaft
adapter fully clockwise.
c. Mount the actuator to the VAV damper box and shaft.
d. Tighten the two bolts on the centering clamp
(8 mm wrench; 70.8–88.5 lb-in. [8–10 Nm] torque).
When the actuator closes, the damper rotates CCW
90 degrees to fully close.
angle of the damper open-to-closed is 45 or 60 degrees:
a. Manually open the damper fully (rotate clockwise).
b. The actuator is shipped with the mechanical
end-limits set at 95 degrees. Adjust the two
mechanical end-limit set screws to provide the
desired amount of rotation. Adjust the two set
screws closer together to reduce the rotation travel.
c. Tighten the two mechanical end-limit screws
(Phillips #2 screwdriver; (26.5–31 lb-in. [3.0–3.5
Nm] torque).
d. Using the Declutch button, rotate the universal shaft
adapter fully clockwise.
e. Mount the actuator to the VAV damper box and shaft.
f.
Tighten the two bolts on the centering clamp
(8 mm wrench; 70.8–88.5 lb-in. [8–10 Nm] torque).
g. When the actuator closes, the damper rotates CCW
either 45 or 60 degrees to fully close.
and the angle of the damper open-to-closed is 90 degrees:
a. Manually open the damper fully (rotate counter-
clockwise).
b. Using the Declutch button, rotate the universal shaft
adapter fully counterclockwise.
c. Mount the actuator to the damper box and shaft.
d. Tighten the two bolts on the centering clamp (8 mm
wrench; 70.8–88.5 lb-in. [8–10 Nm] torque). When
the actuator closes, the damper rotates CW
90 degrees to fully close.
and the angle of the damper open-to-closed is 45 or
60 degrees:
a. Manually open the damper fully (rotate counter-
clockwise).
b. The actuator is shipped with the mechanical
end-limits set at 95 degrees. Adjust the two
mechanical end-limit set screws to provide the
desired amount of rotation. Adjust the two set
screws closer together to reduce the rotation travel.
c. Tighten the two mechanical end-limit screws
(Phillips #2 screwdriver; (26.5–31 lb-in. [3.0–3.5
Nm] torque).
d. Using the Declutch button, rotate the universal shaft
adapter fully counter-clockwise.
e. Mount the actuator to the VAV damper box and shaft.
f.
Tighten the two bolts on the centering clamp
(8 mm wrench; 70.8–88.5 lb-in. [8–10 Nm] torque).
g. When the actuator closes, the damper rotates CW
either 45 or 60 degrees to fully close.
62-0288—03
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