Trane NEXIA XR724 User's Manual And Installation Instructions page 21

Heat/Cool Wiring Diagrams
Heat/Cool Diagram 3: 1 Stage Cooling w/"GAM5B" Model Air Handler
One Stage
Cooling Only
B
Y
Notes:
1. Jumper "W2" to "W3" if three stages of indoor heat is available
2. "Y" terminal must be connected at indoor unit for high stage
airflow.
Heat/Cool Diagram 4: 2 Stage Cooling w/GAM5B Model Air Handler
Two Stage
Cooling Only
B
R
(Note 2)
Y 1
Y2
Notes:
1. Jumper "W2" to "W3" if three stages of
2. "Y" must be connected at indoor unit
18-HD82D1-1B-EN
XR724 INSTALLER'S GUIDE
Non-VS
Air Handler &
Electric Heat
B/C
R
W1
W2
W3
(Note 1)
O
G
Y
(Note 2)
Non-VS
Air Handler &
Electric Heat
B/C
R
W1
W2
W3
(Note 1)
G
(Note 2)
Y
Y2
indoor heat are available
for cooling airflow
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
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