INSTALLATION – DAMPER BOX
Position the 2.5/2.5e damper enclosure on top of the joists so that the damper doors are aligned with
the framed rough opening, being sure that there is easy access to the electrical box located on the
side of the unit (
Figure 6
).
The actuator end of the damper box has two “key holes” which are used to attach the damper box to
the joists. Mark the location of the “key holes” on the joists by placing the damper box over the rough
opening. Remove the damper box and fasten two of the provided wood screws so that the screw head
is slightly above the joist. Position the damper box over the “key holes” and slide to lock into position.
Use the remaining screws to attach the opposite side of the damper box.
Use a good quality latex caulk to seal all wood-to-wood and wood-to-metal joints to create an airtight
enclosure. This is important to ensure that all air drawn in by the fan will be from inside the house.
Attach the interior grille to the joists with the included wood screws.
FIGURE 6 – 2.5/2.5e WHF Damper Enclosure Installed
INSTALLATION – DAMPER COLLAR
•
Remove the two screws that hold the damper collar in place for shipping.
•
Position elliptical collar over damper box opening.
•
Secure 2 screws (
Figure 7, step 1
).
•
Stretch the collar until the 2 holes line up with the holes on the damper box body. Fasten with two
screws (
Figure 7, step 2.1
).
•
Fasten all remaining screws, including the 2 original screws (
Figure 7, step 2.2
).
AirScape 2.5/2.5e WHF Installation Manual 02-11 Page
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