53
WIRING DIAGRAMS
HIGH VOL
T
A
G
E
!
DIS
C
ONNECT
AL
L
POW
E
R BEF
O
RE
SERVICI
NG OR IN
S
T
A
L
L
IN
G
T
H
IS
UNIT
.
M
U
L
T
IPL
E
PO
W
E
R SO
UR
CES M
A
Y BE P
R
ESEN
T
.
F
A
IL
URE
T
O
DO
SO
M
A
Y CAUS
E PRO
P
ERTY DAM
A
G
E
,
PERSO
NAL
I
N
J
U
R
Y
O
R
DE
A
T
H
.
OT18-60A OUTDOOR THERMOSTAT
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)
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
