Page 1
IMPORTANT INSTRUCTIONS
KT and MKT Series Toe Space Heater
DANGER
!
!
ELECTRIC SHOCK OR FIRE HAZARD
Figure 1
Covers all KT & MKT models
!
WARNING
Read Carefully - These instructions are written in an effort to prevent potential difficulties that might arise during
installation. Studying the instructions first may save you considerable time and money later. Observing the following
procedures will keep installation time to a minimum. Save these instructions for future use.
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IMPORTANT INSTRUCTIONS
When using electrical heating appliances, basic precautions should always be followed to
reduce the risk of fire, electric shock and injury to persons, including the following:
1. Read all instructions before wiring or using this
heater.
!
2. WARNING: This heater is hot when in use. To
avoid burns, do not let bare skin touch hot surfaces. Keep combustible materials, such as furniture, pillows, bedding, papers, clothes, boxes,
etc., and curtains at least 3 ft (.9 m) from the
front of the heater and keep them away from the
sides and rear.
!
3. CAUTION: Extreme caution is necessary when any
heater is used by or near children or invalids and
whenever the heater is left operating and unattended.
4. Do not operate any heater after it malfunctions.
Disconnect power at service panel and have
heater inspected by qualified electrician for repair before reusing.
5. Do not use outdoors.
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6. WARNING: To disconnect heater, turn controls to
OFF, and turn OFF power to heater
circuit at main disconnect panel.
7. WARNING: Do not insert or allow
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foreign objects to enter any ventilation or exhaust opening as this
may cause an electric shock, fire,
Figure 2
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or damage to the heater.
8. To prevent a possible of fire, do not block air intakes or exhaust in any manner.
9. A heater has hot and arching or sparking parts
inside. Do not use it in areas where gasoline,
paint, or flammable vapors or liquids are used or
stored.
10. WARNING: Use this heater only as described in this
manual. Any other use is not recommended by the
manufacturer and may cause fire, electric shock,
explosion or injury to people and or property.
11. Heater is not intended for use in bathrooms, laundry areas or similar indoor locations. Never locate
heater where it may fall into a bathtub or other
water container.
VISUAL ALARM
This heater may include a visual alarm to warn that
parts of the heater are getting excessively hot. If the
alarm illuminates, immediately turn the heater off
and inspect for any objects on or adjacent to the
heater that may have blocked the airflow or otherwise caused high temperatures to have occurred. DO
NOT OPERATE THE HEATER WITH THE ALARM ILUMINATING.
SAVE THESE INSTRUCTIONS
King Electrical Mfg. Co. 9131 10th Ave So. Seattle, WA 98108 206-762-0400 www.king-electric.com
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KT & MKT INSTALLATION INSTRUCTIONS
CAUTION!
Turn OFF all electrical power
to install heater
Figure 2
DANGER
!
!
ELECTRIC SHOCK OR FIRE HAZARD
Figure 3
Selecting A Location For Your Heater:
This heater has been designed to allow it to be recessed at
floor level in the toe space of cabinets or under counters or
at the base of walls. When selecting the location, be sure
the materials that will be located in the air heated by this
heater (such as floor coverings) will not distort or discolor
at temperatures above 139°F (60ºC). DO NOT select a location directly beneath sinks or other work areas where people are likely to stand for extended periods of time. DO
NOT install less than 6” (15cm) from vertical side walls or
open edge of door. This heater must have an unrestricted
airflow. DO NOT select a location where it is likely to be
blocked by furniture, throw rugs, etc. Be sure the location
selected allows sufficient space for the heater as shown by
Table 2. DO NOT locate this heater in an area where combustible vapors, gases liquids, or excessive lint, dust or
moisture is present.
Minimum Clearances
when placed in toe space
of a cabinet
Front Top
9 in 0 in 0 in 6 in
23 cm 0 cm 0 cm 15 cm
Bottom
Sides
Depth of
Space
KT Heater
The heater is intended for a toe space installation. Other
grilles are available for a flush surface mount installation
that will trim out the wall can. The heater is designed to be
installed in the toe-space of a cabinet with a minimum of
2” overhang to maximum 7” of overhang. Shorter overhangs
may overheat the floor where longer than 7” overhangs
may overheat the cabinet door area.
The wire and breaker sizing chart will give a general rule of
installation size. Consult an electrician if you are not
knowledgeable about wiring codes.
Wire and Breaker Sizing: Table 2
Total Amps
0 thru 12 #14 15 amp
12.1 thru 16 #12 20 amp
16.1 thru 24 #10 30 amp
Minimum AWG. Wire Size
(Copper
Circuit Breaker or Fuse
Table 1
Min 2”
Max 7”
Cabinet
Overhang
Floor
Size
Rating Label Location
Figure 4
WIRING: Branch Circuit Connection
1. Connect heater only to the voltage, amperage and frequency specified on the nameplate.
2. Wiring procedures and connections shall be in accordance with all National and local codes having jurisdiction.
3. Remove the two screws holding the grille in place & set
grille aside retaining the screws.
4. Removing the two screws holding the cover in place on
each side of the heater will allow you access to the
wiring compartment.
5. A knockout of 1/2 inch conduit size (7/8 inch / 2.2cm)
is provided in the back and side of the heater for power
to enter. Provide proper conduit connectors for your
flexible connections.
6. Attach ground to the green wire attached to wall case
with a wire nut.
7. Assemble all covers on electrical and apply power. Test
unit by turning thermostat up past room temperat ure.
You will see a puff of smoke as the elements are energized and the fan turns on. This is a normal burn off of
manufacturing lubricants and will dissipate in 5 minutes.
8. Heater will continue to run until the room temperature
you set is reached and then turn itself off until the
temperature drops again.
CAUTION - High temperature. Risk of fire
, keep electrical
cords, drapery, furnishings, and other combustibles at least
3 feet (0.9 m) from the front of the heater as well as away
from the side and rear. To reduce the risk of fire, do not
store or use gasoline or other flammable vapors and liquids
in the vicinity of the heater.
Wiring Diagram Figure 5
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OPERATING INSTRUCTIONS
KT and MKT Toe Space Heater
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 thermal 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:
Table 3
Troubleshooting Chart for Electric Heaters
1. After the electric heater has been completely installed, 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 electrical 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.
SYMPTOM PROBLEM SOLUTION
Breaker Trips 1. Short Circuit
2. Overloaded Circuit
3. Improper Voltage
Heater not working 1. No Power
2. Loose Connections
3. Defective Limit
Heater Smokes 1. Oil on Element
2. Needs Cleaning
Room Temperature
does not match
thermostat setting
Room Temperature
swings from too hot
to too cold
1. Thermostat affected
by another heat
source.
2. Improper calibration
1. Defective or low
quality thermostat
Find source of short. Trace heater circu it and verify th e hea ter is wire p rop erly.
1.
2.
Reduce wattage in circuit. Refer to circuit sizing table for maximum wattage.
3. Verify the heater voltage matches the supply voltage.
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 busbars (A&B phase) to produce 240V power.
2. Tighten wire connections.
3. By-pass the limit to test. If heater works, replace the limit.
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.
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.
1. Replace with a better quality thermostat. Anticipated thermostats are
fairly accurate; an electronic thermostat is best.
SAVE THESE INSTRUCTIONS
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Maintenance & Warranty
Maintenance & Cleaning: Basic maintenance is listed below. All other servicing should be performed by qualified
service personnel. Your heater will give you years of service and comfort with o nly minimum care. To assure efficient operation clean the unit via the simple instructions below. Cleaning should be preformed annually.
WARNING: Turn the electrical power OFF at the electrical panel board (circuit breaker or fuse box) and
lock or tag this panel board door to prevent someone from turning on power while you are working on
this heater. Failure to do so could result in serious electrical shock, burns, or possible death.
Before cleaning this heater, the heating element of the heater must be cool.
1. Before removing grille, turn the electrical power OFF. 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. Once you verify the power is off completely,
proceed to the next step.
2. Remove screws and take off grille. Wash grille with hot soapy water and dry immediately
3. Using a hair dryer or vacuum on blow cycle, blow debris back through the element. Do not touch element.
Vacuum lose debris without touching the elements. The fan motor does not require lubrication.
4. Replace grille and secure with screws.
5. Turn thermostat to desired setting.
6. Turn power back ON at the electrical panel board.
WARNING: All other servicing shoul d be performed by an authorized service personnel.
Figure 2
R emote Wall Thermostat
Figure 6
Connection Diagram for Wall Mounted Single Pole Thermostat
1. Red thermostat wire to black power supply wire.
2. Black thermostat wire to black heater wire.
3. White power supply wire to white heater wire.
4. Connect all bare ground wires together.
Connection Diagram for Wall Mounted Double Pole Thermostat
1. Connect the two red thermostat wires to the black
and white power supply wires.
2. Connect the two black thermostat wires to the black
and white heater wires.
3. Connect all the bare ground wires together.
Warranty Information
King Electrical Manufacturing Company will repair or replace, without charge to the original owner, any KT Series
Toe Space heater found to be defective or malfunctioning within 1 year of installation. If the product becomes
defective, contact King at 206-762-0400 for instructions on how to replace heater. Do not return the heater to
the store. All returned goods require a Returned Goods Authorization. This warranty requires the owner or his
agent install the heater in accordance with these instruction, the National Electrical Code and any other applicable heating or electrical codes. It further requires that reasonable and necessary maintenance be performed on
the unit. The company is not liable for abuse or misuse of product. King Electrical Manufacturing Company is not
responsible for replacement of discolored flooring material due to hot air from this heater. Suitable installation
and placement selection for this heater is the responsibility of the installer and the end user.
King Electrical Mfg. Co. 9131 10th Ave So. Seattle, WA 98108 206-762-0400 www.king-electric.com
Kt_install_2012.pub
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