Trane NEXIA XR724 User's Manual And Installation Instructions page 25

Heat/Cool Wiring Diagrams
Heat/Cool Diagram 11: 1 Stage Cooling w/non-Variable Speed Gas Furnace
One Stage
Cooling Only
B
Y
Heat/Cool Diagram 12: 1 or 2 Stage Cooling w/Variable Speed Gas Furnace
One or Two stage
Cooling Only
B
R
Y 1
Y2
Notes:
1. Cut/remove the factory installed "BK" jumper at the indoor unit
2. "Y2" & "R" connections at outdoor are only required for two
stage units
3. For non-Trane/American Standard Indoor units "BK" is not
connected and "Y1"/"Y2" must be connected at indoor unit.
18-HD82D1-1B-EN
XR724 INSTALLER'S GUIDE
One or Two Stage
Gas Furnace
B/C
R
W1
W2
G
Y
Two Stage VS
Gas Furnace
B/C
R
(Note 2)
W1
W2
G
Y1
(Note 3)
(Note 2)
Y2
BK
(Note 1)
Thermostat Connection
C
R
W1
W2
ODT
ODT
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.
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.
BK
RS
Remote
Sensor
RS
Outdoor
Sensor
NO
C
Aux relay
outputs
NC
Remote
Sensor
Outdoor
Sensor
Aux relay
outputs
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