Broan-NuTone 331H Manual Del Usuario página 3

INSTALL THE BLOWER
ROOF INSTALLATIONS
1. Remove roofing nails from the upper 2/3 of the
shingles around the cutout area and carefully lift the
shingles to allow the back flashing sheet on the
blower housing to fit under them.
2. Center the blower ring in the 11" diameter hole,
making sure that the 1-1/4" diameter electrical
wiring hole aligns with the hole in the wiring box.
3. Attach the blower to the roof with the six screws
provided. All six holes in the back panel must be
filled, or any moisture that may get inside the
housing could leak into the house.
4. Using a good grade of roofing cement, seal all of the
shingles around the housing and flashing sheet as
well as the mounting screw heads.
5. Bring electrical wiring through the hole in the wiring
box and secure it according to local codes.
Figure 4
BLACK
TO
BLACK
120 VAC
LINE IN
6. Make the electrical connections with the proper
connector for the type of wiring being used. Con-
nect white to white, black to black, and the green or
bare wire to green. See Figure 4.
7. Replace wiring box cover and screws. Do not pinch
wiring under the cover.
8. Check for free movement of the damper before
installing housing cover and screws.
9. Turn on power and check operation of the blower.
WHITE
GREEN
TO
TO
WHITE
GREEN
INSTALL THE BLOWER
WALL INSTALLATIONS
1. Place a large bead of caulk on the back side of the
housing along the outer edge.
2. Center the blower ring in the 11" diameter hole,
making sure that the 1-1/4" diameter electrical
wiring hole aligns with the hole in the wiring box.
3. Attach blower to the wall with the six screws
provided. All six holes in the back panel must be
filled, or any moisture that may get inside the
housing could leak into the house.
4. Using a good grade of caulk, seal all around the
mounting screw heads.
5. Bring electrical wiring through the hole in the wiring
box and secure it according to local codes.
6. Make the electrical connections with the proper
connector for the type of wire being used. Connect
white to white, black to black, and green or bare
wire to green. See Figure 4.
7. Replace wiring box cover and screws. Do not
pinch wiring under cover.
8. Check for free movement of the damper before
installing housing cover and screws.
9. Turn on power and check operation of the blower.
10.Top and side flanges of the back plate may be
covered with trim strips. Do not block grille opening
at bottom with trim. It will adversely affect perfor-
mance of the blower.
USE AND CARE
Disconnect electrical power supply and lock out ser-
vice panel before cleaning or servicing this unit.
CLEANING
Remove cover and carefully vacuum blower and
inside of housing. Be careful not to bend or otherwise
damage blower wheel.
MOTOR LUBRICATION
The motor is permanently lubricated. Do not oil or
disassemble motor.
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