744L - Home Fan BROAN - Free user manual and instructions

Product Type	Whole House Fan
Brand	Broan
Model	744L
Dimensions (W x D x H)	22 x 22 x 12 inches
Weight	25 lbs
Power Supply	120 V, 60 Hz, 2.5 A
Airflow	1500 CFM
Noise Level	50 dB
Speeds	3
Control	Thermostat and manual switch
Material	Galvanized steel housing
Shutters	Automatic
Installation	Ceiling mount
Warranty	1 year limited
Maintenance	Clean blades and motor annually
Cleaning	Use damp cloth, no solvents
Safety	Do not install near heat sources
Spare Parts	Available from Broan
Repairability	Replace motor, blades, shutter assembly

Frequently Asked Questions - 744L BROAN

How do I install the Broan 744L whole house fan?

Installation requires cutting a ceiling opening, mounting the fan housing, connecting ductwork, and wiring to a 120V power source. Refer to the manual for detailed steps. Ensure proper support and clearance from insulation.

How do I clean the fan?

Turn off power. Use a damp cloth to wipe blades and housing. Do not use harsh chemicals or water on motor. Clean shutters and grille with mild soap. Repeat annually.

How do I adjust the thermostat?

The thermostat is located on the fan housing. Turn the dial to desired temperature setpoint (typically 70-90°F). The fan will automatically turn on when attic temperature exceeds setpoint.

Does the fan need lubrication?

The motor is permanently lubricated and requires no oiling. However, ensure bearings are clean and free of dust.

Why is my fan noisy?

Check for loose blades, debris in housing, or unbalanced fan. Tighten blade set screws and clean. If noise persists, motor bearings may need replacement.

How do I size a whole house fan?

Choose a fan that provides 2-3 air changes per hour for your home. CFM needed = (house square footage x ceiling height) / 2. For the 744L, it's suitable for homes up to 1,500 sq ft.

What is the warranty on my Broan 744L?

Broan offers a 1-year limited warranty from purchase date covering defects in materials and workmanship. Proof of purchase required.

Where can I buy replacement parts?

Order through Broan's website or authorized dealers. Common parts: motor, blade assembly, shutter kit, thermostat. Use model number 744L.

Is the fan energy efficient?

Whole house fans use less energy than air conditioning. The 744L draws about 300 watts on high speed. Use during cooler evenings to reduce cooling costs.

Can I use the fan in winter?

It is designed for summer cooling. In winter, ensure shutters are closed and fan is turned off to prevent heat loss. Do not operate in freezing conditions.

USER MANUAL 744L BROAN

RECESSED LED FAN / LIGHT

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

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READ AND SAVE THESE INSTRUCTIONS

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.

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.

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

Typical Installation

The unit can be installed anywhere between ceiling joists using mounting brackets provided.

* Install in a flat ceiling only.

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.

Do not install in a cooking area.

The unit must not be installed above or inside the cooking area shown.

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 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.

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3. Pound in nails.

Remove unit temporarily, and pound nails partially into joists at all four marked locations.

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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.

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: ① Squeeze top and bottom of connector to ② snap flap back into place.

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 and Light operated with single on/off switch

Fan operated with separate on/off switch or timer. Light operated with separate on/off switch.

8. Select motor speed.

Use rocker switch to select 50 or 80 CFM, based on room size and desired sound level.

9. Finish ceiling.

Cut an opening in finished ceiling material for housing collar.

DO NOT INSTALL TRIM RING WHEN BAFFLE IS ALREADY ATTACHED TO FAN.

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10. Install optional trim ring to trim ring / baffle.

(Trim rings not included with Model 744L.)

Remove the cardboard protector from inside the housing collar.

Place trim ring over trim ring / baffle.

Place fingers directly above and below tab (as shown with arrows and squeeze to snap tab securely to trim ring / baffle.

Repeat for each of the 4 tab locations.

11. Attach trim ring / baffle to housing.

Use a pencil to insert one end of each spring into the holes on the lamp bracket. Center trim ring / baffle in ceiling opening.

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12. Install bulb. (Bulb not included with Model 744L.)

CAUTION - RISK OF FIRE: 75W MAX. LAMP

Use R30, BR30, PAR30L, or PAR30LN lamps only (75W Max.).

For wet locations (tub or shower) - use PAR30L or PAR30LN (75W Max.) lamp only. Use no other lamp types.

Do not install a lamp indentified for use only in enclosed luminaries.

CAUTION: Disconnect power at service entrance before cleaning, servicing, or selecting motor speed.

VENTILADOR CON LÁMPARA LED EMPOTRADO

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ADVERTENCIA

PARA REDUCIR EL RIESGO DE INCENDIOS, DESCARGAS ELÉCTRICAS O LESIONES PERSONALES, SIGA LAS SIGUIENTES PRECAUCIONES:

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