Trane NEXIA XR724 - Dual Fuel Wiring Diagrams

34
18-HD82D1-1B-EN
Two Stage Variable
Speed Gas Furnace
Dual Fuel Diagram 1: 1 or 2 Stage Heat Pump w/Variable Speed Gas Furnace
G
W1
Y1
R
B/C
Y2
BK
W2
One or Two stage
Heat Pump
Y 1
R
B
Y2
Notes:
1. Cut/remove the factory installed “BK” jumper at the indoor unit
2. For non-Trane/American Standard Indoor units “BK” is not
connected and “Y1”/”Y2” must be connected at indoor unit.
3. Outdoor Sensor required for dual fuel restricted mode.
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 Temperature Sensor Connections and Operation:
Aux relay
outputs
RS
C
RS
R
ODT
W1
W2
BK
ODT
NO
C
Y1
NC
Y2
O/B
G
Thermostat Connection
Outdoor
Sensor
Remote
Sensor
O
O
X2
(Note 1)
(Note 2)
(Note 3)
Non-VS One or Two
Stage Gas Furnace
Dual Fuel Diagram 2: 1 Stage Heat Pump w/non-Variable Speed Gas Furnace
G
W1
Y
R
B/C
W2
Single Stage
Heat Pump
Y
R
B
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 Temperature Sensor Connections and Operation:
Aux relay
outputs
RS
C
RS
R
ODT
W1
W2
BK
ODT
NO
C
Y1
NC
Y2
O/B
G
Thermostat Connection
Outdoor
Sensor
Remote
Sensor
O
X2
Note:
1. Outdoor Sensor required for dual fuel restricted mode.
(Note 1)
Dual Fuel Wiring Diagrams
XR724 INSTALLER’S GUIDE