SPYDER® BACNET® PROGRAMMABLE, VAV/UNITARY CONTROLLERS
3 62-0310—01
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. to 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 indi-
cates 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.
Fig. 3. Determining the rotation direction (CW or CCW) 
for damper opening.
Mounting Actuator Onto Damper Shaft (PVB6436AS)
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 
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. 
2. If the damper rotates clockwise (CW) to open, and the 
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.
3.
If the damper rotates counterclockwise (CCW) to open, 
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.
4.
If the damper rotates counterclockwise to open, 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.
Mount Controller
NOTE: The controller may be wired before mounting to a 
panel or DIN rail.
Terminal blocks are used to make all wiring connections to the 
controller. Attach all wiring to the appropriate terminal blocks 
(see “Wiring” on page 5).
See Fig. 4–Fig. 5 for panel mounting dimensions. See Fig. 6 
on page 4 for DIN rail mounting.
Fig. 4. Panel mounting - controller and actuator 
dimensions in inches (mm) for PVB6436AS only.
AIR 
FLOW
AIR 
FLOW
CW TO OPEN, CCW TO CLOSE
CCW TO OPEN, CW TO CLOSE
M2067B
TYPE A DAMPER
TYPE B DAMPER
1
2
3456
78
109 234567
11 111111
1
2
34
5
6
78
0
9
2
22
22
2
2
22
3
3
1
2
34
5
6
78
0
9
3
3
3
33
33
34
5-3/4
(146)
10-5/16 (262)
NOTE:  CONTROLLER CAN BE MOUNTED IN ANY ORIENTATION.
PANEL MOUNTING HOLE
(4X) 3/16 IN. (4.5)
M29329
5-3/64
(128)
8-5/16 (211)
6-29/64 (164)
1-55/64 
(47)
6-17/64
(159)
7/16
(11)
DEPTH IS 
2-1/ 4 (57)