OPERATING INSTRUCTIONS
WHF Series Heater
3
This heater is equipped with a thermal overload
Smart Limit Protection which disconnects ele-
ments and motor in the event normal operating
temperatures are exceeded. If thermal overload trips
due to abnormal operating temperatures, thermal over-
load shall remain open until manually reset by turning
the heater OFF for fifteen minutes. Inspect for any ob-
jects 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 ele-
ment. Repeat the starting procedure.
DO NOT TAMPER
OR REMOVE THIS THIS DEVICE.
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.
Warning
: Clean Heater annually. Wait for heater to
cool before removing grill. Use only a soft brush or vacu-
um on blow to clean heater. Re-attach grill before re-
applying power.
Troubleshooting Table
SYMPTOM
PROBLEM
SOLUTION
Breaker Trips
1. Short Circuit
2. Overloaded Circuit
3. Improper Voltage
1.
2.
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 fair-
ly accurate; an electronic thermostat is best.
SAVE THESE INSTRUCTIONS
Operation:
1. This heater must be properly installed in accordance
with the National Electrical Codes (NEC) & local
electrical codes before it is used.
2. 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.
3. Allow entire system to operate steadily for 1/2 hour.
This should remove oily residue from manufacturing.
(Some smoking may occur).
4. Select the setting for comfort on all thermostats.
5.
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.
