KING KF User Manual
SAVE THESE INSTRUCTIONS
KF and KFS Series Electric Furnaces
Installation Instructions
“WARNING: RISK OF ELECTRIC SHOCK. CAN CAUSE
INJURY OR DEATH. DISCONNECT ALL REMOTE ELECTRIC POWER SUPPLIES BEFORE SERVICING.”
CAUTION: Turn off power source supplying the heater before attempting installation, maintenance or repairs. Lock or tag circuit
breaker or fuse panel door. Failure to do so could result in serious electrical shock, burns, or possible death.
It is extremely important to verify the electrical power supply is the same voltage as the heater being installed. 240 and 480 Volt heaters are
not interchangeable! Powering a 480 Volt unit with 240 Volt supply wires will reduce the heater output by approximately 75% resulting in no motor
power. Powering a 240 Volt unit with 480 Volt supply wires will destroy the heater and voids all warranties.
CHECK: Ensure blower wheel is free-turning and that element assemblies are in place. Be sure filter is in proper position and not torn or dam-
aged. Check that blower housing and motor have not separated from element compartment.
FIELD WIRING: King furnaces come equipped with 60 Amp circuit breakers installed for protection of the furnace internal wiring only. They also
serve as a disconnection means when required. A 240 Volt single phase circuit must be brought to each circuit breaker in the furnace as shown in the
wiring diagram. The terminals are identified as L1-L2, L3-L4, L5-L6 and L7-L8. The kW size of the furnace determines how many circuits are required.
The furnace power and electrical rating table indicates how many circuits each model furnace requires, the size of the branch circuit protection at the
distribution panel and the wire size required from distribution panel to the furnace. Consult your local and national electric codes for answers to any
questions. All wiring used must be approved for a minimum of 75°C. NOTE: No wire may have more than 120 VAC potential to ground. This must
be checked on installation to avoid motor damage. Unit must be grounded by connection of groundwire from the distribution panel to the terminal
provided in furnace. When the line voltage terminal block option is specified for single strike see wiring diagram for wire size and circuit protection
requriements.
King furnaces can be installed with a minimum of 1 inch clearance for compact, space-saving installations in either vertical upflow, downflow or
horizontal position. When installed in the downflow position the combustible floor base accessory must be used.
NOTE: The attached Underwriters Labratories label pertains to the furnace only. It does not cover any air cooler, condensing unit or air cleaner,
which may be used with the furnace. The optional QOU cabinets are designed for slip-in addition of an evaporator coil at a later date. Approval of the
complete air conditioning system requires compliance with local codes.
DIMENSIONAL CLEARANCE
Cabinet sides
Cabinet front
Exhaust duct within
3 feet of furnace
Return air plenum
1 inch
0 inches
1 inch
0 inches
typical horizontal installation typical downflow installation typical upflow installation
King Electrical Mfg. Company • 9131 10th Avenue South Seattle WA 98108 • (206) 762-0400 fax (206) 763-7738
2007 KF-KFS.indd : 10/07
1
ITEM PART NUMBER DESCRIPTION
Heating Element 5 kW / 240V
Heating Element 5 kW / 208V
Heating Element 5 kW / 480V
Heating Element 5.75 kW / 240V
Heating Element 5.75 kW / 240V
Heating Element 4 kW / 240V
Heating Element 4 kW / 480V
Heating Element - 3 Ph 5 kW / 240V
Heating Element - 3 Ph 5 kW / 480V
Auto. Limit Control - 60T11
Circuit Breaker 60 Amp - 1 Ph Square D
Circuit Breaker 60 Amp - 1 Ph Square D
Input Terminal Block - 1 Ph, 2P, 240V
Input Terminal Block - 1 Ph, 2P, 480V
Input Terminal Block - 3 Ph, 3P, 240V
Input Terminal Block - 3 Ph, 3P, 480V
Low Volt Transformer 240 / 208
Low Volt Transformer 277 / 24
Low Volt Transformer 480 / 24
1
2
3
4
4000-09-E07K999
5
4000-03-E07J999
21-2405-00
21-2405-07
21-2405-9
21-2405-2
21-2405-12
21-2405-1
21-2405-6
21-3413-00
21-3413-01
60T11-201936
QOU260
QOU360
EB-200
ED-2
ERB-201
ED-3
4000-04-E07K999
R8330
15SH22-30956
6
R8229A
R8246A
60T25-330976
7
8
9
10
10935H3
9100233Q999
ELD-5-034
CA4SP
5KSP39FGW057AS
5KSP39FGW244AS
5KCP39MGE250AS
11
5KSP39FGG136S
4M207G
5KCP39M6J185S
DAO-3GJ005
DAO-3GJ007.5
12
DAO-3GJ010
FURNACE BLOWER SMALL
FURNACE BLOWER LARGE
13
Sequencer (used prior to 1981)
Sequencer (used after 1981)
Relay 28 Amp
Relay 46 Amp
Manual Reset Limit
Manual Reset Button
Dual Speed Fan Relay
Low Voltage Terminal Block
Ground Lug
1/5 HP 240V Motor
1/5 HP 480V Motor
1/3 HP 240V Motor
1/3 HP 480V Motor
1/2 HP 240V Motor
1/2 HP 480V Motor
Capacitor 3MP 370V
Capacitor 7.5MF 370V
Capacitor 10MF 370V
Blower Small for 1/5 HP Motors
Blower Large for 1/3, 1/2 HP Motors
120-8T-DD-.50PP Blower X-Large for 1/2 HP Motors
14
Air Filter 1" x 16" x 20"
2
2007 KF-KFS.indd : 10/07
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