NuTone 9192NT, 9198NT, 9194NT User Manual
Wall Heater
MODELS: 9192NT, 9194NT, 9198NT
INSTALLATION INSTRUCTIONS
READ & SAVE THESE INSTRUCTIONS!
IMPORTANT SAFETY INSTRUCTIONS
WARNING – TO REDUCE THE RISK OF FIRE, ELECTRIC
SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:
1. All electrical work must be done in accordance with local or
national electrical code as applicable. For safety, this product
must be grounded. If you are unfamiliar with methods of installing electrical wiring, secure the services of a qualified electrician.
2. When wiring, servicing or cleaning this unit, turn off power and
lock out service panel. Failure to do so could allow others or
thermostat to turn on power unexpectedly which may cause
fatal electrical shock.
3. To avoid electrical shock:
• Do not install unit in a tub or shower enclosure or any loca-
tion where it may come in contact with water.
• Never place a switch where it can be reached from a tub or
shower.
4. Do not install this unit in an area where chemicals and other
flammables are stored or used. Explosion and fire may result.
CAUTION
1. This product may ONLY be installed in a wall. Do not mount in
any other position.
2. Install heater at least 12" from floor or any adjacent vertical
surface.
3. Do not locate heater behind a door, furniture, drapes, etc.,
where the air flow to the unit would be restricted.
4. Provide heater with an appropriately-rated electrical circuit to
prevent tripped breakers or blown fuses.
5. Do not connect heater to dimmer switch or speed control.
6. To avoid motor bearing damage and noisy and/or unbalanced
impellers, keep drywall spray, construction dust, etc., off power
unit.
7. Please read specification label on product for further information and requirement.
PLAN THE INSTALLATION
This heater is intended to be used to supply supplemental heat
from a wall location in new or existing construction.
Choose a location where edge of heater will be at least 12" from
the floor or any adjacent vertical surface.
The heater can be operated using its built-in thermostat or a remote thermostat (Choose either the Model 86W Line-Voltage thermostat or use the Model 82 Transfomer/Relay with an appropriate
low-voltage thermostat.). The Model 85NT Kit is available for surface-mount applications. Purchase these accessories separately.
Plan to supply the heater with proper line voltage and appropriate
power cable.
NOTE: Power can be tapped from a nearby circuit depending on
the heater wattage required and the amperage rating of the circuit.
Heater can be converted to half-wattage to avoid overloading such
circuits.
MODEL VOLTS AMPS WATTS BTU/HR
9192NT 240 8.33/4.17 2000/1000 6827/3413
9194NT 240 12.50/6.25 3000/1500 10240/5120
9198NT 240 16.67/8.33 4000/2000 13653/6827
Bold ratings are factory wired.
See “OPTIONAL WIRING CONVERSIONS” section for wattage
conversion instructions.
Refer to FIGURE 1
Follow these basic steps when installing this heater:
1) Nail housing to studs.
2) Connect power cable.
3) Fasten heater assembly and grille to housing.
DRYWALL
THERMAL
OVERLOAD
GRILLE
BUILT-IN
THERMOSTAT
1
HEATER HOUSING
POWER CABLE
FIGURE 1
INSTALL THE HEATER
Refer to FIGURE 2
1. Remove heater assembly from housing. Take out the four (4)
screws shown and set heater assembly aside.
Refer to FIGURE 3
2. Attach housing to wall studs.
NOTE: Locate housing at least 12" from floor on any adjacent
walls.
Use the measuring guides on the sides of housing to position
housing so that it will be flush with finished wall. Nail the housing
to studs through the hole and slot on both sides of housing.
NOTE: In 24"-on-center stud construction, framing in between studs
is necessary.
WIRE THE HEATER
Refer to FIGURE 4
1. Connect power cable to housing. Attach electrical power cable
to housing using appropriate connector. Allow 6" of wire inside
housing. Secure ground wire to housing with grounding clip,
as shown.
Refer to FIGURE 5 and FIGURE 6
2. Wire the heater assembly. Connect wires from heater assembly to power cable wires. Follow wiring diagram.
If heater is wired direct, use the built-in thermostat for temperature control.
OPTIONAL WIRING CONVERSIONS
THERMAL
OVERLOAD
“RESET”
BUTTON
HEATER
ASSEMBLY
MOUNTING
SCREWS
THERMOSTAT
FIGURE 2
NAIL HERE –
BOTH SIDES
MEASURING
GUIDES
When using a separate wall control, simply turn the heater's builtin thermostat to its highest setting. There is no need to disconnect
the built-in thermostat:
a) Turn built-in thermostat to highest setting.
b) Remove knob.
c) Fasten security cover to grille.
LINE-VOLTAGE THERMOSTAT
Refer to FIGURE 7
If wall-mounted control is desired, use the Model 86W Line-Voltage Thermostat. Purchase thermostat separately.
Cut blue wire. Strip ½” of insulation from each end. Connect wires
from wall control to each stripped wire.
LOW-VOLTAGE THERMOSTAT
If wall-mounted control is desired, use a Model 82 Transfomer/
Relay with an appropriate low-voltage thermostat (purchase separately). Follow the mounting and wiring instructions packed with
the controls.
HALF-WATTAGE CONVERSION
Refer to FIGURE 8
The heater will produce less heat and use less electricity if converted to half-wattage. Remove the black jumper wire from the
heating element and discard wire.
FIGURE 3
GROUNDING CLIP DETAIL
FIGURE 4
FIGURE 5
2
COMPLETE THE INSTALLATION
1. Install housing mask. A housing mask has been provided to
keep construction dust, drywall spray, paint, etc., from damaging the heater. Bend the flap on the mask and push it into the
heater housing.
NOTE: Mask can be put into place before or after heater assembly
is reinstalled. Remove mask before operation.
2. Reinstall heater assembly. Secure heater assembly to housing with four (4) screws. Check thermal overload button marked
"RESET". Heater will not operate unless this button is
de-
pressed.
Refer to FIGURE 9
3. Install grille. Place grille over heater and attach with four (4)
screws. Push knob onto thermostat stem.
4. Attach security cover to grille (optional). When heater is installed in a public area without a separate wall control, it is
recommended that:
a) Built-in thermostat be set to desired temperature level.
b) Thermostat knob be removed.
c) Security cover be attached to grille with two (2) screws, pro-
vided.
5. Check operation. Turn on power at service entrance. Turn thermostat to its highest setting and make sure heating element
and blower come on. Then turn it to its lowest setting and make
sure element and blower shut off.
NOTE: The fan delay prevents the fan from coming on until the
element is hot. Likewise, it keeps the fan running until the element
cools down.
USE AND CARE
CAUTION – DISCONNECT POWER AT SERVICE ENTRANCE
AND LOCK OUT PANEL BEFORE CLEANING OR SERVICING
UNIT.
Thermal Overload Protector
Your heater is equipped with a manual-reset thermal overload protector. If heater fails to operate when thermostat is turned to its
highest setting:
1) Turn off power at service entrance.
2) Remove knob and grille.
3) Press button marked "RESET".
This type of device is particularly useful (compared to automatic
reset devices) because it encourages the user to find and correct
the cause of overheating unit when resetting the protector.
To avoid property damage when using this heater to prevent freezeups:
Make sure heater functions properly before leaving unattended. A
tripped protector will prevent the heater from operating.
Cleaning
Clean the heater using the round brush tool on your vacuum cleaner.
Remove large accumulatoins of dust, lint, etc., that might impede
the flow of air through the heater. Such blockage will lower its efficiency and create a possible overheating condition.
To clean grille, use a soft cloth which has been moistened with
household window cleaner.
CAUTION – METAL AND ELECTRICAL PARTS SHOULD NEVER
BE IMMERSED IN WATER.
BLACK JUMPER
T1 T2
HEATING ELEMENT
THERMAL
OVERLOAD
BLK
THERMOSTAT
BLK
BLU
FACTORY-
WIRED
HEATER
BLACK JUMPER
T1 T2
HEATING ELEMENT
THERMAL
OVERLOAD
BLK
THERMOSTAT
BLK
BLU
FACTORY-
WIRED
HEATER
REMOVE THIS
JUMPER WIRE
HEATER CONVERTED TO HALF-WATTAGE
BLK
RED
BLK
CUT WIRE
RED
FOR
REMOTE
THERMOSTAT
➙
MOTOR
FAN
DELAY
BLK
240/208 VAC
LINE IN
MOTOR
FAN
DELAY
BLK
240/208 VAC
LINE IN
BLK
FIGURE 6
BLK
FIGURE 7
TOP / FRONT
OF HEATER
FIGURE 8
3
FIGURE 9
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