FIG. 9
FIG. 12
BLK
BLK
BLK
DISCONNECT FOR HALF-
WATTAGE
THERMAL
OVERLOAD
BLK
BLK
THERMOSTAT
WHT
WHT
WHT
BLK
BLK
BLK
BLK
M
WHT
WHT
WHT
WHT
THERMOSTAT
THERMAL
OVERLOAD
WHT
FIG. 13
HEATING
ELEMENT
M
BLK
FACTORY-WIRED
HEATER (FULL
WATTAGE)
LINE IN LINEA
HEATING
ELEMENT
BLK
CONVERTED 240 VAC
HEATER
OPTIONAL WIRING
CONVERSIONS
1.
Conversion to half-wattage.
(FIGS. 9 & 10)
The heater will produce less heat and use less
electricity if converted to half-wattage.
Disconnect ONE of the two (2) black wires (with
insulated terminals) from the motor.
2.
120 VAC to 240 VAC Conversion (FIGS. 11 & 12)
(Factory-wired 120 VAC Models 170 and 174 ONLY)
These heaters can be converted to operate on
240 VAC.
1) Disconnect ONE of the two (2) black wires (with
insulated terminals) from the motor.
2) Disconnect the two (2) white wires (with insu-
lated terminals) from each other. Do not remove
the white wire from beneath plastic wire tie.
3) Connect the black wire to the white wire.
NOTE
: When heater is converted from 120 VAC to
240 VAC, half-wattage conversion is not possible.
COMPLETE
INSTALLATION
(
NEW CONSTRUCTION)
1. A housing mask has been provided to keep
construction dust, drywall spray, paint, etc.
from damaging heater.
Bend the flaps on the mask and push it into
the heater housing.
NOTE
: Mask can be put in place before or
after heater assembly is re-installed.
2. Remove mask before operation.
(ALL INSTALLATIONS)
3. Secure heater assembly with retaining screw
and plug wiring harness into receptacle.
4. Fasten grille to heater with two (2) screws
provided. (FIG. 13)
5. Push knob onto thermostat stem.
6. Turn on power at service entrance. Turn
thermostat to its highest setting and make
sure heating element and blower come on.
Then make sure element and blower shut off
at lowest thermostat setting.
FIG. 10 - HALF-WATTAGE CONVERSION
(2) BLACK WIRES (connected to motor)
MOTOR
FIG. 11 - 120VAC TO 240VAC CONVERSION
BLACK WIRE (from motor)
WHITE WIRES
MOTOR
GROUND
GROUND
240 VAC LINE IN
OPERATION
Before using heater, make sure heater has been
properly installed according to installation steps
beginning with the "PLANNING" section on page 1.
MAINTENANCE
THERMAL OVERLOAD PROTECTOR
If heater fails to operate when thermostat is turned
to its highest setting: Turn power off at service en-
trance. Remove knob and grille and press button
marked “RESET”.
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.
