5
Sidewall Propeller Fans • 45° and 90° Weatherhood Accessory
®
Damper Installation
To install an optional damper, refer to Figure 21.
Using a pneumatic or electric drill, run the self-
drilling screws through the holes provided in the
side and bottom damper flanges into the wall
housing. Check damper for freedom of movement.
If an optional damper guard or weatherhood is to
be installed, refer to the next section.
Damper Guard or Weatherhood
Installation
To install the damper guard, center guard over
damper and fasten to wall housing using the self-
drilling screws. Refer to Figure 22.
To install the weatherhood, slide the top flange of
weatherhood under the flange of wall housing, see
Figure 21, and fasten with self-drilling screws.
Wall Housing Guard Installation
Attach wall housing guard to wall housing using
the 1/4-20 x 3/4 thread cutting screw with washer.
Refer to Figure 23.
Fit for Sidewall Propeller Fan
Accessories
Figure 24 reveals the correct fit for sidewall
propeller fans after all optional accessories have
been assembled and installed.
Figure 23
Figure 22
Weatherhood
Damper Guard
Wall Housing
Figure 24:
Sidewall Propeller Fan Accessories
Figure 21
Wall Housing
Damper
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Weatherhood
(Optional)
Damper Installed Inside
Weatherhood
(Optional)
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Wall Housing
Damper
Damper Installed Outside
