21
Figure 13. Typical Heat Pump Thermostat Connections
6
7
8
9
2
3
4
5
1
INDOOR
TERMINAL
THER
MOSTAT
DEFROST
BOARD
*HUD
Outdoor
Thermostat
BROWN
ORANGE
ACCESSORY
HEAT PLUG
W2 OUT
W2 IN
**Optional 2nd Stage
Outdoor Thermostat
(Field Supplied)
6
7
8
9
2
3
4
5
1
BROWN
ORANGE
Typical Wiring for 1-Stage Cool / Heat, 1 Stage Electric Heat
Typical Wiring for 1-Stage Cool / Heat, Optional 2-Stage Electric Heat
NOTE 1: Optional 2nd stage outdoor thermostat is field supplied.
NOTE 2: HUD outdoor thermostat is not factory installed in all models.
For HUD applications
Remove white wire
between terminal W2
and W2 IN terminal
C
G
O
W2
Y1
E
R
Y2
For HUD applications move the white jumper wire
from W2 terminal and connect to W2 IN terminal
INDOOR
TERMINAL
THER
MOSTAT
DEFROST
BOARD
*HUD
Outdoor
Thermostat
ACCESSORY
HEAT PLUG
W2 OUT
W2 IN
For HUD applications
Remove white wire
between terminal W2
and W2 IN terminal
C
G
O
W2
Y1
E
R
Y2
For HUD applications move the white jumper wire
from W2 terminal and connect to W2 IN terminal
JUMPER
JUMPER
