Installer Guide 4
1 HEAT / 1 COOL Single or Dual Transformer
Set System Type to
11CONV
Rh
24 Volt AC Power (heating transformer)
[note 2]
Rc
24 Volt AC Power (cooling transformer)
[note 2]
W1
Heat Relay
Y1
Compressor Relay
G
Fan Relay
C
24 Volt AC Transformer Common
[note 1, 3]
NOTES - Conventional Systems
[1]
Optional 24 Volt AC common connection
(required for Wi-Fi).
[2]
Remove factory installed jumper for dual
transformer systems.
[3]
In dual transformer systems, transformer
common must come from cooling transformer.
[4]
If needed for system.
Provide disconnect and overload protection
as required.
2 HEAT / 2 COOL Single or Dual transformer
Set System Type to
22CONV
Rh
24 Volt AC Power (heating transformer)
[note 2]
Rc
24 Volt AC Power (cooling transformer)
[note 2]
W1
Heat Relay Stage 1
W2
Heat Relay Stage 2
Y1
Compressor Relay Stage 1
Y2
Compressor Relay Stage 2
[note 4]
G
Fan Relay
C
24 Volt AC Transformer Common
[note 1, 3]
Typical Wiring Configurations
NOTE:
The “System Type” option will be configured in the Installer Settings section.
Conventional Systems
Heat Only
Set System Type to
11CONV
Rh
24 Volt AC Power
W1
Heat Relay
G
Fan Relay
[note 4]
C
24 Volt AC Transformer Common
[note 1]