15
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
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
YGW
W2
R

COOLING UNIT WITH OPTIONAL HEAT KITS OF 15 kW AND ABOVE

AND ROOM THERMOSTAT WITH TWO STAGES OF HEAT

C
W1
W2
Y2
Y1
O
G
R
TB
YL
BL
CONDENSING UNIT
24V CONNECTION BL
YL
GR
RD
#18 GA. 5 WIRES WITH COOLING
4 WIRES WITHOUT
WH
YL
BRBR
BR YL
GC R
HEAT PUMP UNIT WITH OPTIONAL HEAT KITS OF 10 kW AND BELOW
C
W1
W2
Y2
Y1
O
G
R
TB
#18 GA. 7 WIRE
OYC
W2
R Y O
W2
E
RD
BR
GR
BR
BL
WH
OR
YL
YL
YL
YL
RD
BL
WH
WH
OR
BL BL
WH
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