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If you are installing external
blower on a flat roof:
2 x 4 framing
recommended
33-1/2"
(85.1 cm)
discharge side
of blower
2"
27"
(5.1 cm)
(68.6 cm)
Locate the 11" (27.9 cm) dia. hole
between rafters.
Build a sloping base that will mount the
exterior blower at a minimum pitch of
2-1/2" (6.4 cm). Weatherproof the base
as required.
Locate the base so that the exterior
blower's vent aligns with the 11"
(27.9 cm) dia. hole and the blower sits
evenly on the base with no gaps. Note:
Make sure that the discharge end of the
exterior blower faces away from the
direction of prevailing winds.
Use dimensions from either FIGURE 1
or 2 (Page 3) to locate the 1-1/4"
(3.0 cm) dia. wiring hole.
6.
Remove roofing nails from the
upper two-thirds of the shingles to allow
the back flashing sheet on the exterior
blower housing to fit under them.
7.
Center the exterior blower ring in
the 11" (27.9 cm) diameter hole, making
sure that the 1-1/4" (or 3.0 cm) diameter
electrical wiring hole lines up with the
hole in the wiring box.
8.
Attach the exterior blower to roof
or frame using screws appropriate for
your installation. All four holes in the
back panel must be filled to prevent
moisture that may get inside the remote
blower housing from leaking into the
home.
9.
Seal all the shingles around the
exterior blower housing, flashing sheet,
and mounting screw heads or frame with
Page 4
roofing cement.
Top and side flanges of the back plate
may be covered with trim. It is
recommended that electrical connection
be made and checked first. Do not block
7"
the vent grill opening at the bottom of
(17.8 cm)
the trim. Doing so will decrease blower
performance.
11" (27.9 cm)
dia. hole
Making electrical
and vent
connections
Electrical Shock Hazard
Disconnect power before
making electrical connections.
Connect the ground wire to
green ground screw in wiring
box.
Failure to do so can result in
death or electrical shock.
wiring
box
cover
white
wires
WARNING
green ground
wires
120 VAC
black
line in
wires
FIGURE 3
1.
Remove the cover from the exterior
blower. Then remove the wiring box cover.
2.
Pull electrical wiring through the
hole in the blower base and secure it
according to local codes.
3.
Attach the black plastic vent collar
to the exterior blower with the four screws
provided. Connect the vent system to this
collar and seal the connection securely
with duct tape.
4.
Make the electrical connections.
(See FIGURE 3 and wiring diagram.)
Connect the white and black wires of the
power supply cable wire to the white and
black wires in the wiring box with twist-on
connector.
Connect the green power supply ground
wire to the green ground screw.
5.
Replace the wiring box cover and
screws taking care not to pinch the wiring
under the wiring box cover.
6.
Turn on power (See Use and Care
Guide that came with your vent hood
system). Check operation of blower and
make sure damper is opening freely.
7.
Reinstall exterior blower housing.
BLK
PUSH
BUTTON
N.O.
BLU
GEAR
MOTOR
WHT
M
~
WHT
BLK
REMOTE
BLOWER
WHT
BLK
LINE IN
120 VAC
WIRING
60 Hz
BOX
SWITCH
FAN N.O.
BLK
SWITCH
FILTER N.O.
BLK
BLK
WHT
BLK
WIRING
DIAGRAM
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