Titus Alpha BAC-8001/BAC-8201 Cooling Only - Manual (Page 10)

BAC-8001 and BAC-8201 VAV Controllers Installing the controllers
Mounting
10
Mounting
Mount the controller inside of a metal enclosure. To maintain RF emissions
specifications, use either shielded connecting cables or enclose all cables in
conduit.
Mount the controller directly over the damper shaft. A minimum shaft length of
2.0 inch (51 mm) is required.
Note
.
Mount the controller close enough to the pitot tubes to keep the tubing length to
a minimum. In typical installations the controller’s inputs and sensors are within
24 inches of each other.
Mount the controller as follows:
1. Loosen the nuts on the U-bolt until the shaft can fit through the collar.
2. Place the controller on the damper shaft in the approximate final position.
Position the controller loosely against the mounting surface so that the
mounting bushing can float freely in the mounting tab.
3. Center the mounting bushing in the slot of the mounting tab and secure it
using a #8 self-tapping screw.
4. Manually position the damper in the full open position.
5. Adjust the drive hub as follows:
a. If the damper rotates counter clockwise to close, depress the gear
disengagement button and rotate the drive hub to the full clockwise
position then release the button.
b. If the damper rotates clockwise to close, depress the gear disengagement
button and rotate the drive hub to the full counter clockwise position
then release the button.
6. Lock the hub to the shaft by evenly tightening the V-bolt nuts to 30 to 35
in-lbs.
Illustration 2-2 Controls and indicators
Mounting tab
Gear disengagement button
Airflow sensor inputs
Drive hub
and V-bolt
Status LEDs
Mounting bushing
The controller is designed to directly mount to 3/8 to 5/8 inch (9.5 to 16mm)
round or 3/8 to 7/16 (9.5 to 11mm) square damper shafts.