Trane 7CONT624AS42DA User's Manual And Installation Instructions page 26

Dual Fuel Wiring Diagrams
Dual Fuel Diagram 1: 1 or 2 Stage Heat Pump w/Variable Speed Gas Furnace
One or Two stage
Notes:
1. Cut/remove the factory installed "BK" jumper at the indoor unit
2. For non-Trane/American Standard Indoor units "BK" is not
3. Outdoor Sensor required for dual fuel restricted mode.
Dual Fuel Diagram 2: 1 Stage Heat Pump w/non-Variable Speed Gas Furnace
Single Stage
Heat Pump
B
R
X2
O
Y
Note:
1. Outdoor Sensor required for dual fuel restricted mode.
26
Two Stage Variable
Heat Pump
Speed Gas Furnace
B
B/C
R
R
W1
X2 W2
O O
G
Y1
Y 1
(Note 2)
Y2
Y2
BK
(Note 1)
connected and "Y1"/"Y2" must be connected at indoor unit.
Non-VS One or Two
Stage Gas Furnace
B/C
R
W1
W2
G
Y
Installer's Guide
Thermostat Connection
C
R
W1
W2
O/B
G
Y1
Y2
Remote Tempurature 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 Tempurature 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
ODT
Outdoor
Sensor
ODT
NO
(Note 3)
C
Aux relay
outputs
NC
BK
RS
Remote
Sensor
RS
ODT
Outdoor
Sensor
ODT
NO (Note 1)
C
Aux relay
outputs
NC