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Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
GC R
HEAT PUMP UNIT WITH OPTIONAL HEAT KITS OF 15 kW AND ABOVE
C
W1
W2
Y2
Y1
O
G
R
TB
#18 GA. 7 WIRE
O
YC
W2
R Y O
W2
E
RD
GR
BL
OR
YL
YL
BL
OR
WH
BR
WH
BL
WH
WH
RD
BR
RD
WH
GR
YL
OR
OR
RD
OR
NOTES:
1) OUTDOOR THERMOSTAT (OT-1) SHOULD BE THE
FIRST TO CLOSE AND THE LAST TO OPEN.
2) JUMPER W1 AND W2 TOGETHER IF OT-2 IS NOT
USED.
3) REMOVE WIRE WHEN USING OUTDOOR THERMO-
STAT.
NOMENCLATURE:
OT - OUTDOOR THERMOSTAT (OPTIONAL)
EHR - EMERGENCY HEAT RELAY (OPTIONAL)
COLOR CODES
RD - RED
YL - YELLOW
BL - BLUE
BR - BROWN
OR - ORANGE
WH - WHITE