NuTone 668RP User Manual

MODEL 668RP
Page 1
WARNING
CAUTION
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR IN-
JURY TO PERSONS, OBSERVE THE FOLLOWING:
1. Use this unit only in the manner intended by the manufac-
turer. If you have questions, contact the manufacturer at the
address or telephone number listed in the warranty.
2. Before servicing or cleaning unit, switch power off at service
panel and lock the service disconnecting means to prevent
power from being switched on accidentally. When the ser-
vice disconnecting means cannot be locked, securely fasten
a prominent warning device, such as a tag, to the service
panel.
3. Installation work and electrical wiring must be done by a
qualified person(s) in accordance with all applicable codes
and standards, including fire-rated construction codes and
standards.
4. Sufficient air is needed for proper combustion and exhaust-
ing of gases through the flue (chimney) of fuel burning equip-
ment to prevent backdrafting. 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 au-
thorities.
5. When cutting or drilling into wall or ceiling, do not damage
electrical wiring and other hidden utilities.
6. Ducted fans must always be vented to the outdoors.
7. Acceptable for use over bathtub or shower when installed in
a GFCI protected branch circuit.
8. If this unit is to be installed over a tub of shower, it must be
marked as appropriate for the application and be connected
to a GFCI (Ground Fault Circuit Interrupter) protected branch
circuit.
9. Do not use this fan with any solid-state speed control device.
10. Never place a switch where it can be reached from a tub or
shower.
11. Use this unit only in the manner intended by the manufac-
turer. If you have questions, contact the manufacturer.
12. This unit must be grounded.
FAN / LIGHT
READ AND SAVE THESE INSTRUCTIONS
1. Provide a separate 15 AMP circuit. Use 14 GA. power cable
of type which meets code.
2. This product is designed for ceiling installation only. This prod-
uct is designed for installation in ceilings up to a 12/12 pitch.
Ductwork must point up. DO NOT MOUNT THIS PRODUCT
IN A WALL.
3. Install in ceiling only, at least 6” from any wall.
4. For general ventilating use only. Do not use to exhaust haz-
ardous or explosive materials and vapors.
5. To avoid motor bearing damage and noisy and/or unbal-
anced impellers, keep drywall spray, construction dust, etc.,
off power unit.
6. Please read specification label on product for further infor-
mation and requirements.
DISCONNECT ELECTRIC POWER SUPPLY BEFORE
CLEANING OR SERVICING THIS UNIT.
TO REPLACE BULB:
Remove lens by gently depressing sides and pull down. Use
bulb rated up to 100 watts only.
TO CLEAN LENS AND GRILLE:
Remove lens as explained above. Remove bulb. Remove acorn
nut in center of light reflector and lower assembly. Unplug light.
CAUTION: Grille and reflector are separate units.
Plastic parts can be cleaned with mild, soapy water and dried
with a soft cloth. DO NOT USE ABRASIVE CLOTHS, STEEL
WOOL PADS, OR SCOURING POWDERS.
TO CLEAN FAN ASSEMBLY:
Unplug fan motor. Remove retaining screws.
CAUTION: Fan assembly will swing downward when screws are
removed. Support the fan assembly with a free hand while re-
moving retaining screws.
Gently vacuum fan, motor and interior of housing. Motor is per-
manently lubricated and never needs oiling.
METAL AND ELECTRICAL PARTS SHOULD NEVER BE IM-
MERSED IN WATER.
TO REASSEMBLE ALL ABOVE PARTS:
Reverse all procedures explained above. Assemblies should not
be disassembled any further than explained above.
USE AND CARE
To register this product, visit:
www.nutone.com

NuTone 668RP Specifications

General

Model Number	668RP
Number of Speeds	2
Width	30 inches
Filter Type	Aluminum
Duct Size	7 inches Round
Voltage	120V

Summary

General Safety Warnings

TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS

Observe safety instructions for fire, electric shock, or injury risks during operation and installation.

Before Servicing or Cleaning

Turn off power at the service panel and lock it to prevent accidental activation during maintenance.

Installation and Electrical Wiring

Installation and wiring must be performed by qualified persons following all applicable codes and standards.

Proper Combustion Air

Ensure sufficient air for combustion and venting of fuel-burning equipment, following NFPA and ASHRAE standards.

Protecting Utilities

Avoid damaging electrical wiring and other hidden utilities when cutting or drilling into walls or ceilings.

Venting and GFCI Protection

Ducted fans must vent outdoors. Unit is acceptable over bathtubs/showers when protected by a GFCI circuit.

Speed Control and Switch Placement

Do not use solid-state speed controls. Never place a switch within reach of a tub or shower.

Installation Precautions

Circuit Requirements

Use a separate 15 AMP circuit and 14 GA power cable that meets code.

Mounting Location

Install only in ceilings, at least 6" from any wall, with ductwork pointing up.

Ventilation Use

For general ventilation only. Do not use for hazardous or explosive materials.

Preventing Motor Damage

Keep drywall spray, construction dust, etc., away from the power unit to prevent motor damage.

Use and Care Instructions

Disconnect Power

Always disconnect electric power supply before cleaning or servicing the unit.

Replacing Light Bulb

Remove lens by depressing sides, pull down. Use bulb rated up to 100 watts.

Cleaning Lens and Grille

Clean plastic parts with mild, soapy water. Do not use abrasive cloths or scouring powders.

Cleaning Fan Assembly

Support fan assembly when removing screws. Vacuum gently. Motor is permanently lubricated.

Reassembly

Reverse all procedures for reassembly. Do not disassemble further than explained.

Prepare the Unit

Remove Lamp Holder Assembly

Step 1: Remove the lamp holder assembly from the unit.

Remove Fan Assembly

Step 2: Remove fan assembly retaining screws and lift out the fan assembly.

Install Hanger Bars

Step 3: Slide 4 hanger bars into slots on each end of the housing.

Install the Unit

Position Unit and Mark

Step 1: Position unit between joists, extend brackets, mark keyhole slots flush with ceiling.

Pound Nails

Step 2: Remove unit, pound nails partially into joists at marked locations.

Hang Unit and Secure

Step 3: Hang unit on nails, pound tight. Use screws for wide joists and crimp channels for noise-free mount.

Remove Electrical Knockouts

Step 4: Use a flat-bladed screwdriver to remove proper electrical knockouts.

Connect Electrical Wiring

Step 5: Connect electrical wiring as shown in the diagram.

Replace Fan Assembly

Step 6: Replace fan assembly and plug into receptacle. Direct wires away from blower inlets.

Install Grille and Light Reflector

Step 7: Install grille and reflector, plug in light, tighten acorn nut. Install 100W bulb.

Install Light Lens

Step 8: Gently squeeze tabs on light lens and insert into slots in the grille.

Service Parts and Warranty

Service Parts List

List of numbered parts with part numbers and descriptions for the unit.

Limited Warranty

Details the one-year warranty, exclusions, disclaimers, and remedy for product defects.

How to Obtain Warranty Service

Instructions on how to contact the company for warranty service, including required information.