Nutone WF37 - Manual

INSTALLATION INSTRUCTIONS

READ & SAVE THESE INSTRUCTIONS!

BRICK CONSTRUCTION

Refer to Figure 1.

1. Select a location for the fan in the center of the gable. Prepare a

17

3

⁄

4

" square opening.

2. Insert fan into opening from the outside of the home and secure in

place with eight mounting screws through the flange.

3.

Caulk all exposed edges of the mounting flange to prevent water
seepage between fan and building.

Louvered Gable Fan

MODEL: WF37, WF57NR

FIGURE 1

FIGURE 2

BLOCK OFF
LOUVER IF ON
COMMON WALL
WITH FAN

BLOCK OFF
LOUVER IF ON
COMMON WALL
WITH FAN

17

3

⁄

4

"

Square

16

3

⁄

4

" DIA.

10

1

⁄

2

" DEEP

20

3

⁄

4

"

21

3

⁄

4

"

17

3

⁄

4

"

18

3

⁄

4

"

IMPORTANT SAFETY INSTRUCTIONS

WARNING: TO REDUCE THE RISK OF FIRE. ELECTRIC SHOCK, OR

INJURY TO PERSONS, OBSERVE THE FOLLOWING:

A. To reduce the risk of fire or electric shock, do not use this fan with

any solid-state speed control device.

B. Use this unit only in the manner intended by the manufacturer. If you

have questions, contact the manufacturer.

C. Before servicing or cleaning unit, switch power off at service panel and

lock service panel 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.

CAUTION:

For general ventilating use only. Do not use to exhaust hazardous or

explosive materials and vapors.

CAUTION:

This unit has an unguarded impeller. Do not use in locations readily

accessible to people or animals.

WARNING: TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR

INJURY TO PERSONS, OBSERVE THE FOLLOWING:

A. Installation work and electrical wiring must be done by qualified person(s)

in accordance with all applicable codes and standards, including fire-
rated construction.

B. Sufficient air is needed for proper combustion and exhausting of

gases through the flue (chimney) of fuel burning equipment to
prevent back drafting. 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.

C. When cutting or drilling into wall or ceiling, do not damage electrical

wiring and other hidden utilities.

D. Ducted fans must always be vented to the outdoors.
E. If this unit is to be installed over a tub or shower, it must be marked as

appropriate for the application.

F. NEVER place a switch where it can be reached from a tub or shower.

FRAME CONSTRUCTION

Refer to Figure 2.

1. Select a location for the fan in the center of the gable. Prepare a

18

3

⁄

4

" high by 17

3

⁄

4

" wide opening and a support frame as illustrated

in Figure 2.

2. Insert fan into opening and secure in place with eight mounting

screws through the flange.

3.

Caulk all exposed edges of the mounting flange to prevent water
seepage between fan and building.

MOUNTING THE FAN

• IMPORTANT: If fan is to be mounted on a wall that has an

existing louver, the louver must be blocked off to allow for
proper air circulation.

• For efficient operation, mount the fan as high as possible -

keeping the top of fan louvers below house trim board.

• This unit must be securely mounted with screws.
• Seven (7) square feet of inlet area is required for WF-57NR.
• Five (5) square feet of inlet area is required for WF-37.
• Fan flange must be mounted to exterior surface of building.

OPTIONAL ACCESSORY

(Sold separately)

Model AHS-200 Automatic Heat Sensor will automatically shut
down the Attic Fan if, for any reason, the temperature in the
attic reaches 200°F.