INSTALLATION INSTRUCTIONS
R
−
410A Split System Heat Pump
428 01 5301 05
9
Specifications subject to change without notice.
Figure 10
Typical Thermostat (Control Circuit) Connections
LEGEND
24
−
V FACTORY WIRING
24
−
V FIELD WIRING
FIELD SPLICE CONNECTION
OUTDOOR THERMOSTAT
EMERGENCY HEAT RELAY
SUPPLEMENTAL HEAT RELAY
SHR
EHR
C
W
2
L
G
Y
E
O
R
C
W
2
L
G
Y
E
O
R
ODT
EHR
ODT
ODT
REMOVE WIRES FROM CRIMP NUT IN INDOOR FAN COIL WHEN INSTALLING OUTDOOR THERMOSTATS.
SYSTEMS WITH ONE OUTDOOR THERMOSTAT
G
R
W
3
C
O
R
G
R
W
3
C
E
C
W
2
Y
W
2
O
R
C
W
2
Y
W
2
C
L
G
Y
E
O
R
SYSTEMS WITHOUT OUTDOOR THERMOSTATS
C
G
R
W
2
C
Y
O
R
W
2
SUBBASE
THERMOSTAT
CONNECTION
SPLICE
INDOOR
CONNECTION
SPLICE
OUTDOOR
BOARD
DEFROST
SUBBASE
THERMOSTAT
CONNECTION
SPLICE
INDOOR
CONNECTION
SPLICE
OUTDOOR
BOARD
DEFROST
SUBBASE
THERMOSTAT
CONNECTION
SPLICE
INDOOR
CONNECTION
SPLICE
OUTDOOR
BOARD
DEFROST
SYSTEMS WITH TWO OUTDOOR THERMOSTATS
NOTE:
WHEN USING OUTDOOR THERMOSTATS, W
2
MUST BE ENERGIZED WHEN REQUESTING SUPPLEMENTAL HEAT.
W
2
E
SHR
SHR
