All outdoor wiring must be
weatherproof. Use copper
conductors only.
POWER WIRING
208/230-1-60
C ON TA C TOR
G RD .
S C RE W
M 2
T 1
L 1
L 2
OUTDOOR UNIT
T 2
C ON TA C TOR
M 1
T 1
L 1
L 2
T 2
TYPICAL
TWO STAGE
COOLING
THERMOSTAT
MUST BE
USED
POWER
CONTROL
FACTORY
WIRE NUT
BRN
YEL
BLU
BLK
I N DO O R
VARIABLE SPE ED AIR
HA NDL E R / F URN ACE
T ERMI NA L B OAR D
RED
W1
G
W2
C
R
Y2
Y1
Y
G
W2
BK
X
O
C
R
Y2
Y1
C
R
Y2
Y1
Y2 OUT
W/W1
DE-HUMIDIFICATION
CONTROL CONNECTION
(JUMPER MUST BE REMOVED)
FOR ELECTRIC HEAT ONLY
(CLASS 2 WIRING)
(CLASS 1 WIRING)
FIGURE 8 - TYPICAL FIELD WIRING
POWER
WIRING
CONTROL
WIRING
COOLING
WITH
DE-HUMIDIFICATION
CONTROL
FIGURE 9 - TYPICAL FIELD WIRING WITH
POWER WIRING
208/230-1-60
C ON TA C TOR
G RD .
S C RE W
M 2
T 1
L 1
L 2
OUTDOOR UNIT
T 2
C ON TA C TOR
M 1
T 1
L 1
L 2
T 2
TYPICAL
TWO STAGE
COOLING
THERMOSTAT
MUST BE
USED
POWER
CONTROL
FACTORY
WIRE NUT
BRN
YEL
BLU
BLK
I N DO O R
VA RIAB LE SPEED AIR
HA NDL ER / FUR NACE
T ERMI NAL BOA RD
RED
W1
G
W2
C
R
Y2
Y1
Y
G
W2
BK
X
O
C
R
Y2
Y1
C
R
Y2
Y1
Y2 OUT
W/W1
FOR ELECTRIC HEAT ONLY
(CLASS 2 WIRING)
(CLASS 1 WIRING)
COOLING
ONLY
ALL FIELD WIRING TO BE IN ACCORDANCE WITH NATIONAL ELECTRICAL CODE (NEC) AND/OR LOCAL CODES.
DE-HUMIDIFICATION CONTROL
550.37-N1Y
Central Environmental Systems
7
