Trane NEXIA XR724 User's Manual And Installation Instructions page 33

Heat Pump Wiring Diagrams
Heat Pump Diagram 11: Package Single or Multi-stage Heat Pump with Variable Speed Blower
Package Unit
B/C
R
W1
W2
/X2
O
G
Y1
Y2
BK
Notes:
1. Cut/remove the factory installed "BK" jumper on the ECM fan
control board
2. For non-Trane/American Standard indoor units "BK" is not
connected
Heat Pump Diagram 12: Package Heat Pump with non-Variable Speed Blower
Package Unit
B/C
W2
/X2
18-HD82D1-1B-EN
XR724 INSTALLER'S GUIDE
(Note 1)
(Note 2)
R
W1
O
G
Y
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
C
R
W1
W2
O/B
G
Y1
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
BK
RS
Remote
Sensor
RS
ODT
Outdoor
Sensor
ODT
NO
C
Aux relay
outputs
NC
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