RECESSED
HOUSING
MOUNTING
BRACKET
CEILING
JOIST
POWER
CABLE
TRIM RING / BAFFLE
FINISHED CEILING
4" ROUND
DAMPER/DUCT
CONNECTOR &
4” ROUND
DUCTWORK
LED FAN / LIGHT
READ AND SAVE THESE INSTRUCTIONS
MODELS 744L • 744RL • 744RNL
Page 1
For Warranty Statement, Service Parts, Technical
Support, or to Register your product, please visit our
website or call:
In the United States - Broan.com 800-637-1453 or
NuTone.com 888-336-6151. In Canada - Broan.ca or
NuTone.ca 877-896-1119
WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:
1. Use this unit only in the manner intended by the manufacturer.
If you have questions, contact the manufacturer at the address
or telephone number listed in the warranty.
2. Before servicing or cleaning unit, switch power off at service
panel and lock the service disconnecting means to prevent
power from being switched on accidentally. When the service
disconnecting means cannot be locked, securely fasten a
prominent warning device, such as a tag, to the service panel.
3. Installation work and electrical wiring must be done by a
qualified person(s) in accordance with all applicable codes
and standards, including fire-rated construction codes and
standards.
4. Sufficient air is needed for proper combustion and exhausting
of gases through the flue (chimney) of fuel burning equipment to prevent backdrafting. Follow the heating equipment
manufacturer’s guideline and safety standards such as those
published by the National Fire Protection Association (NFPA),
and the American Society for Heating, Refrigeration and Air
Conditioning Engineers (ASHRAE), and the local code authorities.
5. When cutting or drilling into wall or ceiling, do not damage
electrical wiring and other hidden utilities.
6. Ducted fans must always be vented to the outdoors.
7. Never place a switch where it can be reached from a tub or
shower.
8. A dimmer switch may be used to operate the light in this unit.
Refer to the list of compatible dimmer switches on broan.com.
9. Install this unit in a flat ceiling only.
10. For use in non fire rated installations only.
11. Not for use in environmental air handling spaces.
12. If this unit is to be installed over a tub or shower, it must be
marked as appropriate for the application and be connected
to a GFCI (Ground Fault Circuit Interrupter) - protected branch
circuit.
13. Do not install in a ceiling thermally insulated to a value greater
than R60.
14. This unit must be grounded.
OPERATION
The fan and light can be operated using various combinations of
on/off switches and controls:
• Fan and light controlled with single on/off switch
• Fan and light controlled with separate on/off switches
• Fan controlled with timer control
• Selectable fan CFM - 50 or 80
See “Connect Wiring” section for various wiring options.
CLEANING
To clean trim ring / baffle: Vacuum with a soft brush attachment
or remove trim ring / baffle and clean with a soft cloth and mild
soap or detergent. Dry thoroughly before reinstalling.
To clean inside of housing: Remove trim ring / baffle and
vacuum inside of housing with a soft brush attachment.
MAINTENANCE
Motor is permanently lubricated. Do not oil or disassemble motor.
Installer: Leave this manual with
the homeowner.
PLAN THE INSTALLATION
CAUTION
1. For general ventilating use only. Do not use to exhaust
hazardous or explosive materials and vapors.
2. To avoid motor bearing damage and noisy and/or unbalanced
impellers, use the cardboard protector (provided) to keep
drywall spray, construction dust, etc. off power unit.
3. Please read specification label on product for further
information and requirements.
*
Typical Installation
The unit can be installed anywhere between ceiling joists using
mounting brackets provided.
* Install in a flat ceiling only.
Seal duct
joints with
tape.
4-IN.
ROUND
ELBOWS*
ROOF CAP*
(with built-in
damper)
Keep duct
runs short.
OR
WALL CAP*
(with built-in
damper)
HOUSING
POWER
CABLE*
Seal gaps
around
Housing.
4-IN. ROUND
*Purchase
separately.
INSULATION*
(Place around and
over Fan Housing.)
FAN
DUCT*
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.
Plan to supply the unit with proper line voltage and appropriate
power cable.
MODELS 744L • 744RL • 744RNL
Page 2
Bend the tabs on the cardboard protector and insert protector into
opening in housing.
NOTE: The cardboard protector shields the inside of the housing
from drywall spray and construction dust. Do not remove it until
after construction is completed.
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.
COOKING AREA
Do not install above
or inside this area
45
Cooking
Equipment
45
Floor
Do not install in a cooking area.
The unit must not be installed above or inside the cooking area shown.
INSTALLATION
CARDBOARD PROTECTOR
3. Pound in nails.
Remove unit temporarily, and pound nails partially into joists at
all four marked locations.
1. Install mounting brackets.
Slide the adjustable mounting brackets into the bracket channels
on the housing.
4. Hang and secure housing.
Hang unit from nails. Check to make sure that there will be a 1/8”
gap between bottom of housing and ceiling material. Pound nails
tight. For wide joist centers: A #8 x 3/8 self-tapping screw can be
used to join extended brackets together and create a rigid mount.
To ensure a noise-free mount, crimp the bracket channels tightly
around mounting brackets.
MODELS 744L • 744RL • 744RNL
Page 3
FLUSH
5. Attach damper/duct connector.
Snap the damper/duct connector onto housing. Make sure that
tabs on the connector lock in housing slots. (Top of damper/duct
connector will be flush with top of housing.) Install ductwork.
NOTE: Make sure damper flap is in place inside of duct
connector. If it is not: Squeeze top and bottom of connector
to snap flap back into place.
VERTICAL
POWER CABLE
CONNECTION
BLUE AND RED
TO BLACK
WHITE
TO
WHITE
WIRING PLATE
TOP / BACK
OF HOUSING
GROUND TO
WIRING PLATE
2-WIRE PLUS
GROUND
POWER
CABLE
Fan and Light operated with single on/off switch
BLUE (FAN)
TO
BLACK
WHITE
TO
WHITE
WIRING PLATE
TOP / BACK
OF HOUSING
RED (LAMP)
TO RED
GROUND TO
WIRING PLATE
3-WIRE PLUS
GROUND
POWER
CABLE
HORIZONTAL POWER
CABLE CONNECTION
6. Choose power cable direction.
Remove wiring plate. When re-attached, the wiring plate allows
the power cable to enter unit horizontally or vertically.
7. Connect wiring.
Unit can be wired from outside of housing as shown. Use UL
approved connectors to wire per local codes.
Fan operated with separate on/off switch or timer.
Light operated with separate on/off switch.
80 CFM 50
MOTOR
SPEED
SELECTION
SWITCH
80 CFM 50
8. Select motor speed.
Use rocker switch to select 50 or 80 CFM, based on room size
and desired sound level.