Instruction manual

a. Nonprotected heaters
(1.) The 10-kw heater can be wired for single supply only. Supply circuits connect to heater pigtail leads.
(2.) The 10-kw heaters can use separate field-installed, factory-authorized disconnect kit Part No. KFADK0101DSC which installs in
fan coil.
b. Fused heater
(1.) The 15- and 20-kw heaters can be wired for single- or dual-supply circuits.
(2.) Single supply circuit wiring requires a factory-authorized, single point adapter kit Part No. KFASP0101SPK.
Table 5—Fan Motor Speed Taps
UNIT MOTOR SPEED COOL SPEED
FA4A018-036 2 High
FA4A042-070 3 Medium
FB4A, FC4B, FX4A (All Sizes) 3 Medium
9. Ground Connections
WARNING: According to NEC, ANSI/NFPA 70, and local codes, the cabinet must have an uninterrupted or unbroken
ground to minimize personal injury if an electrical fault should occur. The ground may consist of electrical wire or metal
conduit when installed in accordance with existing electrical codes. (See Ground/Conduit Note below.) Failure to follow this
warning could result in electrical shock, fire, or death.
NOTE: Use UL-listed conduit and conduit connector for connecting supply wire(s) to unit to obtain proper grounding. If conduit connection uses
reducing washers, a separate ground wire must be used. Grounding may also be accomplished by using grounding lugs provided in control box.
a. For non-protected or single-circuit heaters, 1 equipment ground connection is provided on fan coil units. (See Fig. 1.)
Fig. 3—System Wiring Diagram Using A Typical Indoor Thermostat, With No Outdoor Thermostat
A94128
R
C
Y
G
O
W2D
W2T
W3
Y
0
R
C
Y
G
O
E
W2
L
R
C
O
W2
Y
L
TYPICAL
HEAT PUMP
THERMOSTAT
INDOOR
CONTROL
BOARD
OUTDOOR
SPLICE
JW1
SINGLE-SPEED HEAT
PUMP DEFROST BOARD
Table 4—Color Code For Motor Lead Wires
MOTOR SPEED TAP WIRE COLOR
Common Yellow
High Black
Medium Blue (3-speed only)
Low Red (Blue — 2-speed motors)
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