2
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Fig. 2 -- Damper Hood Panels
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Fig. 3 -- Damper and Hood Panel Installation
6. Adjust the actuator limiter to limit the maximum open
position of the damper to the amount of desired ventilation
air from step 2. The adjustment is made by setting the set
screw on the end of the actuator to the desired position.
Tighten screw firmly to hold in place. (See Fig. 5--7.)
Adjustments can be made after the assembly is installed, by
removing rooftop unit’s horizontal return panel and
accessing the actuator.
7. Lift damper assembly and set in place over the top of the
bottom panel, per Fig. 3. Secure the damper assembly in
place with provided screws.
8. Remove the jumper plug shipped attached to the
economizer harness in the HVAC unit. DO NOT
DISCARD. Connect the plug from the damper actuator
assembly to the economizer plug in the HVAC unit. Set the
jumper plug aside in case it is determined at a later date that
the two position damper is no longer required, at which
time the jumper plug can be reinstalled.
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Fig. 4 -- Filter Installation
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Fig. 5 -- Actuator Limit Screw
9. Install the assembled outside--air hood onto the HVAC unit,
covering the damper assembly. Screw in place.
10. Install the provided aluminum filter into the hood. Lock in
place with top filter clips. (See Fig. 4.)
11. Replace the top filter access panel.
12. Remove lockout tag and restore base unit to operation.
