Trane 7CONT624AS42DA User's Manual And Installation Instructions page 18

Heat/Cool Wiring Diagrams
Heat/Cool Diagram 13: 1 Stage Cooling w/non-Variable Speed Oil Furnace
One Stage
Cooling Only
B
Y
Notes:
1. BT (Bonnet Thermostat) model THT1248
(BAYSEN03ATEMPAA) required for dual fuel, oil furnace
applications.
2. Field supplied relay (R1) required for oil burner primary
Heat/Cool Diagram 14: 1 or 2 Stage Cooling w/Variable Speed Oil 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 unit are only required for 2
stage systems
3. For non-Trane/American Standard Indoor units "BK" is not
connected and "Y1"/"Y2" must be connected at indoor unit.
4. BT (Bonnet Thermostat) model THT1248 BAYSEN03ATEMPAA)
required for dual fuel, oil furnace applications
5. Field supplied relay (R1) required for oil burner primary
18
Non-VS
Oil Furnace
B/C
R
BT
W1
R1
W2
(Note 2)
G
Y
Oil Burner Primary
T
R1
T
(Note 2)
Variable Speed
Oil Furnace
B/C
R
(Note 2)
W1
R1
W2
(Note 5)
O
G
Y1
(Note 3)
(Note 2)
Y2
BK
(Note 1)
(Note 5)
Installer's Guide
Thermostat Connection
C
R
W1
(Note 1)
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 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
BT
W1
(Note 4)
W2
O/B
G
Y1
Y2
Oil Burner Primary
Remote Tempurature Sensor Connections and Operation:
T
Sensor Options in the Installer Settings/Sensor Settings menu
R1
T 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
RS Sensor
ODT
Outdoor
Sensor
ODT
NO
C
Aux relay
outputs
NC
BK
RS
Remote
Sensor
RS
ODT
Outdoor
Sensor
ODT
NO
C
Aux relay
outputs
NC