WIRING DIAGRAMS
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
32
R
W2
C
R
Y
O
W1 G
E
TYPICAL H/P
ROOM THERMOSTAT
1
2
PACKAGE HEAT PUMP
LOW VOLTAGE
JUNCTION BOX
BLUE
BROWN
WHITE
ORANGE
GREEN
YELLOW
RED
#18 GAUGE 8 WIRE
R
Y
G
O
O
Y
G
R
BL
BL
BR
W
BR
W
3
BL
Y
PACKAGE SYSTEM WIRING DIAGRAM - HEAT PUMPS ONLY!
TWO-STAGE ELECTRIC HEAT ABOVE 10 kW
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.
COLOR CODES
R --RED
Y --YELLOW
BR-BROWN
O --ORANGE
W -WHITE
G --GREEN
BL-BLUE
OUTDOOR THERMOSTAT #1
CLOSE ON TEMPERATURE FALL
BL
1
2
OUTDOOR THERMOSTAT #2
(IF USED, SEE NOTE 1)
OT18-60A Outdoor Thermostat
