16
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 SE RVICING.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNI NG
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
OYC
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