Heat Pump Wiring Diagrams - Trane NEXIA XR724 User's Manual And Installation Instructions

Heat Pump Wiring Diagrams

Heat Pump Diagram 1: 1 or 2 Stage Heat Pump w/TAM7 Model Variable Speed Air Handler
One or Two stage
Heat Pump
B
R
X2
O
Y1
Y2
Notes:
1. Cut/remove the factory installed "BK" jumper
at the indoor unit
2. Jumper "W2" to "W3" if three stages of indoor heat
are available
3. "YI" and "YO" connections must be made as show
for freeze protection and internally mounted
condensate overflow circuits to work properly
4. If 3rd party condensate overflow switches are
installed, they should be wired between "Y1" of the
thermostat and "YI" of the airflow control board
Heat Pump Diagram 2: 1 Stage Heat Pump w/GAM5A & TAM4 Model Air Handler
One stage
Heat Pump
B
R
X2
O
Y
Notes:
1. Jumper "W2" to "W3" if three stages of indoor heat
are available
2. "YI" and "YO" connections must be made as shown
for freeze protection and internally mounted conden-
sate overflow circuits to work properly.
3. If 3rd party condensate overflow switches are
installed, they should be wired between "Y" of the
thermostat and "YI" of the airflow control board.
28
XR724 INSTALLER'S GUIDE
Variable Speed Air
Handler & Electric Heat
B/C
R
W1
W2
W3
(Note 2)
O
G
YI (In)
(Note 4)
YO
(Note 3)
Y2
BK
(Note 1)
Variable Speed Air
Handler & Electric Heat
B/C
R
W1
W2
W3
(Note 1)
O
G
YO
(Note 2)
YI
(Note 3)
Thermostat Connection
BK
C
RS
R
RS
W1
W2 ODT
ODT
O/B
NO
G
C
Y1
NC
Y2
Remote Temperature Sensor Connections and Operation:
Sensor Options in the Installer Settings/Sensor Settings menu
Remote Sensor (connect to the RS terminals)
- None
- Replaces internal sensor
- Average with internal sensor
Outdoor Temp Sensor (connect to the ODT terminals)
- None
- Outdoor
Caution: Do not run sensor wires in the same bundle with HVAC
wires. Keep away from high voltage wiring to avoid interference.
Thermostat Connection
BK
C
RS
R
RS
W1
W2
ODT
ODT
O/B
NO
G
C
Y1
NC
Y2
Remote Temperature Sensor Connections and Operation:
Sensor Options in the Installer Settings/Sensor Settings menu
Remote Sensor (connect to the RS terminals)
- None
- Replaces internal sensor
- Average with internal sensor
Outdoor Temp Sensor (connect to the ODT terminals)
- None
- Outdoor
Caution: Do not run sensor wires in the same bundle with HVAC
wires. Keep away from high voltage wiring to avoid interference.
Remote
Sensor
Outdoor
Sensor
Aux relay
outputs
Remote
Sensor
Outdoor
Sensor
Aux relay
outputs
18-HD82D1-1B-EN