Delta Controls
Document Edition 1.2
Page 3 of 16
Mounting the VAV Termination Board
The actuator on one end of the housing fits over the damper shaft on the VAV box. The other end of the
plastic housing is secured to the VAV box with a sheet metal screw (through the mounting slots and brass
bushing provided). It is recommended that the screw be positioned near the center of the slot (triangle mark in
the plastic). After positioning the damper and the actuator to accommodate proper movement, the actuator
bracket is tightened securely.
Steps to mounting the VAV
1.
According to the Damper Shaft sizes as
indicated above, ensure that the shaft insert
is correct for the size of the damper shaft.
2.
Determine whether the damper will rotate
clockwise or counterclockwise to open.
3.
Ensure that the damper is fully closed. The
indicator on the end of the damper shaft
should be vertical (up-down).
4.
Slide the controller over the damper shaft.
5.
Secure the right end of the plastic housing
to the VAV box with a sheet metal screw
(through the mounting slots and brass
bushing provided). It is recommended that
the screw be positioned near the center of
the slot (triangle mark in the plastic).
6.
Move the actuator clamp to the fully closed
position. If the damper rotates clockwise to
open, slide the manual override switch to
manual, and move the adjustment lever to
the far left. Return the switch to automatic.
7.
Confirm again that the damper is fully
closed.
8.
Tighten the adjustment lever. (3mm allen-
screw, onto the damper shaft, torque 55 -
60 lb-in (6.5-7 Nm)).
9.
To ensure proper functionality of the
damper, depress the clutch, and stroke the
damper fully in both directions.
Warnings and Cautions
Personal injury/loss of life may occur if a procedure is not performed as specified.
Equipment damage or loss of data may occur if the user does not follow a
procedure as specified.
Open
Damper
Damper Shaft
Closed
Damper
Position for sheet
metal screw
Adjustment
Lever
VAV mounted
on
Closed
Damper