NuTone 8663RF Installation Instructions

Bathroom Exhaust
Fan/Fluorescent
Light Combination
MODEL: 8663RF
Suitable for use in shower or tub enclosure when used
with GFCI protected branch circuit.
The exhaust fan consists of the housing, power unit/blower
assembly (motor, wheel, mounting plate,) grille/lens assembly,
reflector/lamp plug assembly (lamps not furnished,) and duct collar.
• WARNING: To reduce the risk of shock, do not use this fan with
any solid-state speed control device.
• Acceptable for use over tub or shower when installed on a GFCI
protected branch circuit.
• Not for use in kitchens.
Do not install in a ceiling insulated to a value greater than R-40.

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 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.
®
READ & SAVE THESE INSTRUCTIONS!
INSTALLATION INSTRUCTIONS
9"
6"
Slots
Power/Blower
Unit
Wing Nut
Grille/Lens
Assembly

FOR BEST RESULTS

When installing the Exhaust Fan/Light in a new construction site,
install housing during the rough-in construction of the building. The
blower unit, reflector and grille should be installed after the finished
ceiling is in place.
PLANNING DUCTWORK AND WIRING
DUCTWORK
1. Use 4" round duct.
2. Plan duct run from discharge opening of fan to the outside. For
best fan performance, make duct run as short as possible and use
minimum number of elbows.
3. Use optional NuTone ducting accessories as needed.
WIRING
Plan to run 120vAC house wiring (with ground) from power source,
through wall switch, to junction box in housing. For separate control of
fan and light use an optional NuTone switch.
IMPORTANT: Use wire suitable for 90
9"
Housing
Scroll
Reflector
Assembly
Mounting
Springs (2)
1
/
14 " DIA.
FIGURE 1
8
o C.
Wiring
Knockouts