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WIRING DIAGRAMS
OUTDOOR THERMOSTAT #2
(IF USED, SEE NOTE 1)
R
BL
2
1
OUTDOOR THERMOSTAT #1
CLOSE ON TEMPERATURE FALL
For outdoor temperatures below 0° F with 50% or higher relative humidity,
set outdoor thermostat at 0° F
NOTE 1: OT18 #2 CAN BE CONNECTED BETWEEN W2 OF THERMOSTAT AND BROWN WIRE IF DESIRED.
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
PACKAGE SYSTEM WIRING DIAGRAM - HEAT PUMPS ONLY!
TWO-STAGE ELECTRIC HEAT ABOVE 10 kW
TYPICAL H/P
ROOM THERMOSTAT
W2
Y
O
Y
3
BL
2
1
OT18-60A OUTDOOR THERMOSTAT
C
W1
G
R
E
W
BL
#18 GAUGE 8 WIRE
PACKAGE HEAT PUMP
RED
R
R
YELLOW
Y
Y
G
G
GREEN
O
O
ORANGE
W
WHITE
BR
BROWN
BR
BL
BLUE
LOW VOLTAGE
JUNCTION BOX
COLOR CODES
R --RED
Y --YELLOW
BL-BLUE
BR-BROWN
O --ORANGE
W -WHITE
G --GREEN
53
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