UC
With inbuilt single pole thermostat
Wiring Diagram
Part Two
Operation
and
Maintenance
How to operate your heater
1. Once installation in complete and power has
been restored turn the thermostat knob fully
clockwise.
2. When the room reaches your comfort level, turn
the thermostat knob counterclockwise until the
heater turns off. The heater will automatically
cycle around this preset temperature.
3. To reduce the room temperature, turn the
knob counterclockwise. To increase the room
temperature, turn the knob clockwise.
Maintenance
As needed, or every six months minimum.
1. WARNING! Before removing grill, turn the
electrical power off at the electrical panel
board (circuit breaker or fuse box). Lock or tag
the panel board door to prevent someone from
accidentally turning the power on while you
are working on the heater. Failure to do so
could result in serious electrical shock, burns,
or possible death.
2. It is important that you verify power has been
turned off and no power is going to the heater
before proceeding. Circuit breakers are often
not marked correctly and turning the wrong
breaker off could mean electricity is flowing to
the heater, even if the heater does not appear
to be working. If you are uncomfortable working
with electrical appliances, unable to follow
these guidelines, or do not have the necessary
equipment, consult a qualified electrician.
3. Once you verify the power has been turned
off correctly, proceed to the next step.
4. Remove thermostat knob, if equipped.
Remove the screws and take off grill.
5. Wash grill with hot, soapy water and dry
immediately.
6. If present, remove the screws securing the
heater assembly to the opening, then pull
heater out of opening.
7. Remove the four screws securing the lid to the
top of the heater assembly, remove lid.
8. Thoroughly vacuum accumulated dust, lint
or other debris from blower wheel and heater
outlet. Important: Be careful not to damage
the blower wheel, and do not allow the blower
wheel to spin freely when vacuuming.
9. Install lid and slide heater assembly back into
opening. Secure heater assembly to opening,
then install grill and thermostat knob (if equipped).
10. Restore power to heater at circuit breaker
panel or fuse box, then test heater operation
by turning thermostat on and/or adjusting
to a higher temperature.
About the Manual Reset Temperature Limit Control
The heater is protected by a temperature-limit
control. The manual reset temperature limit control
is designed to open the heater circuit when
excessive operating temperatures are detected.
The problem must be assessed and the limit must
be reset to resume operation.
Resetting the Manual Reset Temperature
Limit Control
If the manual reset limit control has opened
the heater circuit due to excessive operating
temperatures, the heater will not work until
the manual reset limit button is pressed. After
allowing the unit to cool for at least 15 minutes
and resolving the problem causing the limit to trip
(typically heater is blocked or needs cleaning),
use a narrow object such as a ball-point pen
to access the manual reset button through the
heater grill. Press FIRMLY, and be sure to listen
and feel for a click, indicating it has been reset.
3
WARNING
Risk of Electrical
Shock. Connect
grounding lead to
grounding wire
provided. Keep all
foreign objects out
of heater.
WARNING
Risk of Fire.
Heater must be
kept clear of all
obstructions: a
minimum of 3 feet
in front; 6 inches
on both sides.
Heaters must be
kept clean of lint,
dirt and debris.
WARNING
Turn the electrical
power off at the
electrical panel
board (circuit
breaker or fuse
box) and lock or
tag the panel board
door to prevent
someone from
turning on power
while you are
working on the
heater. Failure to
do so could result
in serious
electrical shock,
burns, or possible
death.