Nutone 8490 - Manual

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INSTALLATION INSTRUCTIONS

10" Round Ceiling Fan

MODEL: 8490 SERIES

TYPICAL INSTALLATION IN
EXISTING CONSTRUCTION

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.

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 combusition 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.

•

Do not mount over tub or in shower stall enclosure.

•

Suitable for use with solid-state speed control.

•

CAUTION: To reduce risk of fire and to properly exhaust air,
be certain the unit is ducted to the outside. Do not vent
exhaust air into spaces within walls or ceiling or into attics,
crawl spaces or garages.

• WARNING: Disconnect power before servicing.

INSTALLATION
IN EXISTING CONSTRUCTION

PREPARING THE INSTALLATION SITE

IMPORTANT: 18" minimum clearance space above ceiling
is required.

1. Cut 11" diameter opening in ceiling adjacent to ceiling joist.

Install header so that housing can be supported on two sides.

If opening cannot be located adjacent to joist, install two

headers for proper housing support.

2. Disconnect power at circuit breaker. Run house wiring

(with ground) from wall switch to fan location.

IMPORTANT:

Be certain all wiring complies with electrical

codes and the unit is properly grounded.

ROOF CAP
(SOLD SEPARATELY)

ADJUSTABLE
MOUNTING
BRACKET

MODEL 854 FILTER
(SOLD SEPARATELY)

GRILLE

GRILLE SCREW

OUTLET BOX

8" DUCT
(PURCHASE LOCALLY)

MOUNTING THE HOUSING

NOTE: The mounting brackets and hanger bars included with
the unit will not be used for installation in existing construction.

1. Remove grille screw, motor bracket assembly and outlet box from

the unit.

2. Remove tape from louvers and be certain both damper sections

operate freely.

3. Position housing into the cutout. Feed house wiring through

the outlet box opening.

NOTE:

The housing must be positioned so that the joist

or header will not interfere with installation of the outlet box.

4. Using screws or nails, secure the housing to the joist/header(s)

through the keyhole slots provided in sides of housing. Be
certain plaster flange is against finished ceiling.

5. Connect 8" ductwork.