NuTone WHV-20 User Manual

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NuTone WHV-20 User Manual

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INSTALLATION INSTRUCTIONS

READ & SAVE THESE INSTRUCTIONS!

Whole House Ventilator

MODEL WHV-20

IMPORTANT SAFETY INSTRUCTIONS

WARNING: TO REDUCE THE RISK OF FIRE. ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:

A.Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer.

B.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.

INSTALLATION INSTRUCTIONS

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.

WARNING: To reduce the risk of fire or electric shock, use only NuTone specified solid-state speed control as indicated on this products data label.

Designed for installation between 24" OC ceiling joist with no framing necessary. If the building structure has 16" OC joist, this unit will require framing.

Discharge opening requires one (1) square foot for every 750 CFM of fan rating.

221/2"

261/2"

 

 

CUTOUT

 

FIGURE 1

223/8"

263/8"

101/4"

 

MOUNTING

 

CLIPS

 

2" x 6" JOIST

 

2" x 4" JOIST

FIGURE 2

FAN INSTALLATION

1.Select location for fan in ceiling.

2.Locate ceiling joists.

3.Refer to Figure 1. Using a right angle square to mark location of cutout for unit size 221/2" x 261/2" long.

4.Refer to Figure 2. Cutout in ceiling must be directly in line with the inside face of joists.

5.Refer to Figure 2. The mounting clips on this unit are mounted for 2" x 4" construction. After determining size of joist, relocate the mounting clips if necessary and reassemble securely.

6.Refer to Figure 3. Push fan housing into ceiling cutout. Support clips will hold housing in place on joists.

7.Push fan housing flush to ceiling and drill mounting holes in joists through holes in housing and secure in place with screws provided (No. 12 x 1" wood screw.)

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