Plan The Installation - Broan 744SFL Instructions Manual

PLAN THE INSTALLATION

POWER
CABLE
CEILING
JOIST
FINISHED CEILING
Typical Installation
The unit can be installed anywhere between ceiling joists using
mounting brackets provided. Install in a flat ceiling only.
INSULATION*
(Place around and
over Fan Housing.)
FAN
HOUSING
POWER
CABLE*
Seal gaps
around
Housing.
4-IN. ROUND
DUCT*
Seal duct
joints with
4-IN.
*Purchase
tape.
ROUND
separately.
ELBOWS*
The ducting from this fan to the outside of the building has a strong
effect on the air flow, noise and energy use of the fan. Use the
shortest, straightest duct routing possible for best performance,
and avoid installing the fan with smaller ducts than recommended.
Insulation around the ducts can reduce energy loss and inhibit
mold growth. Fans installed with existing ducts may not achieve
their rated airflow.
Use a roof cap or wall cap that has a built-in damper to reduce
backdrafts.
Plan to supply the unit with proper line voltage and appropriate
power cable.
COOKING AREA
Do not install above or
inside this area.
o
45
NOT FOR USE IN
A COOKING AREA.
Do not install in a cooking area.
The unit must not be installed above or inside the cooking area shown.
4" ROUND
DAMPER/DUCT
CONNECTOR &
4" ROUND
HOUSING
DUCTWORK
MOUNTING
BRACKET
TRIM RING / BAFFLE
OR
WALL CAP*
(with built-in
damper)
o
45
Cooking
Equipment
Floor
INSTALLATION
1. Install mounting brackets.
Slide the adjustable mounting brackets into the bracket channels
on the housing.
Bend the tabs on the cardboard protector and insert protector
into opening in housing.
NOTE: The cardboard protector shields the inside of the housing
ROOF CAP*
from drywall spray and construction dust. Do not remove it until
(with built-in
damper)
after construction is completed.
Keep duct
runs short.
2. Mark mounting location.
Position unit between joists and extend mounting brackets.
IMPORTANT: Position brackets so there will be an 1/8" gap
between bottom of housing and ceiling material. Mark the top
of keyhole slot on all four mounting brackets.
3. Pound in nails.
Remove unit temporarily, and pound nails partially into joists at
all four marked locations.
CARDBOARD PROTECTOR
MODEL 744SFL
Page 2
1/8" GAP