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INSTALLATION INSTRUCTIONS

READ & SAVE THESE INSTRUCTIONS!

Belt Driven Whole House Ventilator

MODELS: WHV-30BD & WHV-36BD

For use with louver models: WHL-30 & WHL-36

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 shock, do not use

with solid state speed controls. This fan is intended for
installation facing an unoccupied space only.

IMPORTANT:

Read each step completely before beginning

your installation.

FIGURE 1

INSTALLATION

Refer to Figure 1.

1. Decide upon desired location in central hallway.
2. Remove attic insulation from area where the Whole-House

Ventilator will be installed. Make sure the attic floor is free
of electrical wiring or plumbing pipes. There should be
approximately 36" of clearance between the top of ceiling
joists and the roof. This will prevent back pressure which
can reduce efficiency and increase noise level.

3. 

Using the template provided on the louver carton,

determine the desired location and orientation of the
louver. Drive a small nail up through the ceiling at one
corner of the template.

4. Locate nail from above. Using this point as a reference,

layout louver cutout.

WHL-36

34

1

4

" x 36"

WHL-30

34

1

4

" X 29"

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