Broan 778WH - Manual

Page 1

MODEL 778WH

VENTILATION FAN

WITH LIGHT

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. This unit must be grounded.
8. This unit is U.L. listed. Type I.C. inherently protected.

CAUTION

1. For general ventilating use only. Do not use to exhaust

hazardous or explosive materials and vapors.

2. This product is designed for installation in FLAT CEILINGS

ONLY. Do not mount this product in a wall.

3. The light fixture assembly must be mounted to the fan

housing assembly included with this product. Do not

mount the light fixture assembly to a wiring outlet box.

4. To avoid motor bearing damage and noisy and/or

unbalanced impellers, keep drywall spray, construction

dust, etc. off power unit.

5. Please read specification label on product for further

information and requirements.

TYPICAL INSTALLATIONS

HOUSING

CEILING

JOIST

CEILING

MATERIAL

POWER CABLE

MOUNTING
BRACKETS

GLASS

LIGHT

SHADE

16”-ON-CENTER

CEILING JOISTS

HOUSING

CEILING

JOIST

CEILING

MATERIAL

POWER CABLE

MOUNTING
BRACKETS

For a rigid mount:

Brackets can be joined

together with

a #8 x 3/8

self-tapping

screw

GLASS

LIGHT SHADE

24”-ON-CENTER

CEILING JOISTS

Installer:

Leave this manual with the

homeowner.
Homeowner:

Use and Care information on page 4.

SUSPENDED CEILINGS

Housing hung with wires -

3-point mount.

MOUNTING

TAB

SUSPENDED

CEILING MATERIAL

POWER

CABLE

4" ROUND

DUCT

HOUSING

GLASS

LIGHT SHADE

PLAN THE INSTALLATION

The unit will operate

most quietly and

efficiently when

located where the

shortest possible

duct run and

minimum number

of elbows will be

needed.
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.

ROOF

CAP

*

4-IN. ROUND

ELBOW(S)

*

4-IN.

ROUND

DUCT

*

WALL CAP

*

*

Purchase

separately

INSULATION

(Can be placed

around and over

fan housing.)

FAN

HOUSING