NuTone 656 User manual
COMBINATION UNITS
MODEL 656 HEATER/LIGHT
MODEL 658 HEATER/FAN
656F AND 658F FINISH PACKS FOR USE
WITH 654H HOUSING PACKS.
READ AND SAVE
THESE INSTRUCTIONS
IMPORTANT INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE
INSTALLING OR USING THIS
HEATER.
To reduce the risk of fire, electric shock, or injury to persons,
observe the following:
1. Use this unit only in the manner intended by the manufacturer. 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 service 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. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
5. This heater is hot when in use. To avoid burns, do not let bare skin touch hot surfaces. Keep combustible materials, such as furniture, pillows, bedding, papers, clothes,
etc. and curtains at least 3 feet (0.9 m) from the front of the heater.
6. Extreme caution is necessary when any heater is used by or near children or invalids and whenever the heater is left operating and unattended.
7. Do not operate any heater after it malfunctions. Disconnect power at service panel and have heater inspected by a reputable electrician before reusing.
8. Do not use outdoors.
9. To disconnect heater, turn controls to off, and turn off power to heater circuit at main disconnect panel (or operate internal disconnect switch, if provided).
10. Do not insert or allow foreign objects to enter any ventilation or exhaust opening, as this may cause an electric shock or fire, or damage the heater.
11. To prevent a possible fire, do not block air intakes or exhaust in any manner.
12. A heater has hot and arcing or sparking parts inside. Do not use it in areas where gasoline, paint, or flammable vapors or liquids are used or stored.
13. Use this heater only as described in this manual. Any other use not recommended by the manufacturer may cause fire, electric shock, or injury to persons.
14. To avoid electrical shock: Do not install unit in a tub or shower enclosure or any location where it may come in contact with water. Never place a switch where it
can be reached from a tub or shower.
15. Do not connect heater to dimmer switch or speed control.
16. Provide a separate 15 AMP circuit. Use 14 GA. power cable of type which meets code.
17. This product is designed for ceiling installation only. This product is designed for installation in ceilings up to a12/12 pitch. Ductwork must point up. DO NOT MOUNT
THIS PRODUCT IN A WALL.
18. Install in ceiling only, at least 6" from any wall.
19. The product must be grounded.
SAVE THESE INSTRUCTIONS
TOOLS AND
MATERIALS REQUIRED
• Straight-blade & Phillips screwdrivers
• Saber or Keyhole Saw
• Hammer
• Pliers or Nut Driver
MODEL 658 ONLY
• 4” round duct and elbows (as needed)
• Roof or wall cap
• Duct tape
• Electrical supplies (to comply with codes)
PREPARATION
1. Unplug the heater assembly from the RED recep-
tacle.
2. Loosen the two retaining screws on the inside of the
heater discharge opening.
Place a screwdriver tip between the outer wall of
the discharge opening and the fan housing. Gently
pry outward until the exhaust discharge slips off the
support lip on the outer housing. (FIG. 1)
3. Unhook hinge pins and lift heater assembly out of
housing. (FIG. 2)
CAUTION: Remove the shipping ring from the heater
blower inlet before operating the heater.
STEPS 4 & 5 - MODEL 658 ONLY
4. Unplug the fan assembly from the BLACK recep-
tacle. Remove the plastic bag and set it aside.
5. Remove the mounting screw and carefully lift the
fan assembly out of the housing. (FIG. 3)
6. Refer to the wiring diagram of your unit on the next
page. Remove appropriate knockout(s) by inserting
a screwdriver blade into slots and bending it back
and forth to break tabs. (FIG. 4)
7. Insert the adjustable mounting brackets into the
bracket channels on the housing. (FIG. 5)
FIG. 1
RETAINING
SCREWS
FIG. 2
HINGE PINS
FIG. 3
FIG. 4
FIG. 5
KNOCKOUTS
WIRING OPENING RELEASE SLOT
INSTALLATION
WARNING:To reduce the risk of fire, do not store or
use gasoline or other flammable vapors and liquids
in the vicinity of the heater.
CAUTION: High temperature, risk of fire, keep
electrical cords, drapery, furnishings, and other
combustibles at least 3 feet (0.9 m) from the front of
the heater and away from the side and rear.
STEP 8 - MODEL 658 ONLY
8. For best results, choose a location which allows
fan to be vented outside with the shortest possible
duct run and the fewest number of elbows.
9. Position unit between joists and extend mounting
brackets. Position brackets such that bottom edge
of housing will be flush with finished ceiling. Mark
the top of keyhole slot on all four mounting brackets.
(FIG. 6)
10. Remove unit temporarily, and pound nails partially
into joists at all four marked locations. (FIG. 7)
11. Hang unit from nails and use embossed measuring
guides to check if unit will be flush with finished
ceiling. Pound nails tight. For wide joist centers:
A #8 x 3/8 self-tapping screw can be used to join
extended brackets together and create a rigid mount.
To ensure a noise-free mount, crimp the bracket
channels tightly around mounting brackets. (FIG. 8)
STEP 12 - MODEL 658 ONLY
12. Snap the damper/duct connector onto housing.
Make sure that tabs on the connector lock in
housing slots. (Top of damper/duct connector
will be flush with top of housing.) (FIG. 9)
NOTE: Make sure damper flap is in place inside
of duct connector. If it is not: Squeeze top and
bottom of connector to snap flap back into place.
(FIG. 10)
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.
13. Wire unit according to appropriate diagram. (FIG.11
or FIG.12)
NOTE
If the switch has not been wired properly and wires
need to be moved:
1. Each wire opening has a release slot.
2. Push a small nail or screwdriver into release slot
while gently removing wire.
3. DO NOT pull any wire out of the switch without
using the release slot. The switch may be dam-
aged.
14. Replace heater assembly removed in STEP 3 and
plug it into RED receptacle. Direct wires away from
blower inlet.
FIG. 6
FIG. 7
FIG. 8
FIG. 9
EMBOSSED
MEASURING
GUIDES
FLUSH
NIVEL
FIG. 10
HEAT
LIGHT
RED
BLK
BLK 120 VAC LINE IN
WHT
GRD
WHT
BLUE
RED
RED
GRD
MODEL
656 MODEL
658
STEP 15 - MODEL 658 ONLY
15. Replace fan assembly removed in
STEP 5 and plug it into BLACK recep-
tacle.
STEPS 16 & 17 - MODEL 656 ONLY
CAUTION: To avoid the possibility of
overheating and/or fire, the grille must
be installed as shown in Fig. 13.Acorn
nut and tooth washer must attach to
threaded rod through proper hole in
light reflector.
16. Slide the light reflector into opening in
grille and plug into WHITE receptacle.
Use acorn nut and tooth washer from
plastic bag to attach grille/reflector
assembly to threaded rod on housing.
Tighten securely using pliers or nut
driver. Install a light bulb 100 Watt
maximum. (FIG. 13)
17. Install light lens by (1) hooking one
of its tabs into notch in grille/reflector
assembly; (2) apply light pressure to
other tab with fingertips and (3) snap
into place. (FIG. 14)
STEP 18 - MODEL 658 ONLY
18. Fasten grille with single grille screw.
Snap grille button into place over screw.
(FIG.15)
FIG. 13
FIG. 14
3
FIG. 15
BLK
NEGRO
WHT
RED
RED
GRD
RED
ROJO WHT
GRD
120 VAC LINE IN
BLK
HEAT
FAN
FIG. 11 FIG. 12
1
2
3
LIGHT
REFLECTOR
ACORN NUT
USE THIS HOLE
BOTTOM VIEW
GRILLE
THREADED ROD
TOOTH
WASHER
OPERATION
Before using heater, make sure heater has been properly
installed according to installation steps beginning with the
"PREPARATION" section.
MAINTENANCE
TO REPLACE BULB - Remove lens by gently depressing
sides and pull down. Use bulb rated up to 100 watts only.
LUBRICATION
The heater is permanently lubricated and never needs
oiling or disassembly.
CLEANING
Clean heater once a month as follows:
1. Turn off power at service panel.
2. Make sure heating element is cool.
3. Use a soft brush attachment to gently vacuum grille
openings or wipe grille clean with a soft cloth.
4. Restore power.
CAUTION: METAL AND ELECTRICAL PARTS SHOULD
NEVER BE IMMERSED IN WATER.
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