King Electric Model KT - Manual (Page 3)

Table 3
This heater is equipped with a thermal overload
called Smart Limit Protection. It disconnects ele-
ments and motor in the event normal operating
temperatures are exceeded. If the thermal overload
trips due to abnormal operating temperatures, the ther-
mal overload will remain open until manually reset by
turning the heater OFF for fifteen minutes. Inspect for
any objects on or adjacent to the heater that may cause
high temperatures. After inspecting the heater, keep
the power to the heater off for 10 minutes to reset the
SLP thermal protector. If the SLP thermal protector
shuts the heater off again, immediately turn the heater
OFF at the circuit breaker and inspect the heater for
possible fan motor failure or dirt and lint on the heating
element. Repeat the starting procedure.
General information and Guidelines:
This heater must be properly installed before it is used.
DO NOT tamper with or change the operating of this
heater. All service should be preformed by a authorized
service representative. Only replace components with
King approved replacement parts.
Operation:
OPERATING INSTRUCTIONS
KT and MKT Toe Space Heater
3
SAVE THESE INSTRUCTIONS
1. After the electric heater has been completely in-
stalled, all thermostats should be turned to LOW or
NO HEAT. Turn ON breakers, wait 3 to 5 minutes and
check to see that the heaters are not operating. If
operating, disconnect power and check for improper
wiring. If none are operating then turn thermostats
to highest position and wait 3 to 5 minutes. Check to
see that all heaters are operating. Should any not be
operating, disconnect power and check wiring.
2. Allow entire system to operate steadily for 1/2 hour.
This should remove oily residue from manufacturing.
(Some smoking may occur).
3. Select the setting for comfort on all thermostats.
4. A safety limit control is provided to turn off the
heater automatically if it is blocked or otherwise
overheats due to an abnormal condition. DO NOT
bypass or remove this safety device from the electri-
cal circuit-see Warning Figure 3 on page 2. During
normal use, this safety control should not operate. If
you find that this control is operating, make sure the
heater is not being blocked. If it continues to cycle
the heater off, disconnect power to heater and have
it checked and repaired by a qualified electrician.
Troubleshooting Chart for Electric Heaters
SYMPTOM PROBLEM SOLUTION
Breaker Trips 1. Short Circuit
2. Overloaded Circuit
3. Improper Voltage
1. Find source of short. Trace heater circuit and verify the heater is wire properly.
2. Reduce wattage in circuit. Refer to circuit sizing table for maximum wattage.
3. Verify the heater voltage matches the supply voltage.
Heater not working 1. No Power
2. Loose Connections
3. Defective Limit
1. Turn Breaker ON, turn thermostat ON, check that the breaker is position
properly on panel bus-bar. A 2-Pole breaker must be connected to both bus-
bars (A&B phase) to produce 240V power.
2. Tighten wire connections.
3. By-pass the limit to test. If heater works, replace the limit.
Heater Smokes 1. Oil on Element
2. Needs Cleaning
1. It is normal for the element to burn off some light finishing oil used in the
manufacturing process when first energized. Open windows and allow room
to vent until it stops, usually within a few minutes.
2. Remove any dust or dirt accumulations.
Room Temperature
does not match
thermostat setting 1. Thermostat affected
by another heat
source.
2. Improper calibration
1. Sunlight or other heat sources can affect the thermostat. Move the thermo
stat to another location or remove the heat source.
2. Remove cover and adjust calibration screw.
Room Temperature
swings from too hot
to too cold 1. Defective or low
quality thermostat
1. Replace with a better quality thermostat. Anticipated thermostats are
fairly accurate; an electronic thermostat is best.