5 Installer Guide
1 HEAT / 1 COOL - No Auxiliary Heat
Set System Type to
11HP
Rh
24 Volt AC Power
Rc
Connected to Rh with supplied Jumper Wire
O/B
Changeover Valve
[note 2]
Y1
Compressor Relay
G
Fan Relay
C
24 Volt AC Transformer Common
[note 1]
3 HEAT / 2 COOL – Including Auxiliary Heat
Set System Type to
32HP
Rh
24 Volt AC Power
Rc
Connected to Rh with supplied Jumper Wire
O/B
Changeover Valve
[note 2]
Y1
Compressor 1 Relay (1st stage heating/cooling)
Y2
Compressor 2 Relay (2nd stage heating/cooling)
AUX
Auxiliary Heat Relay (3rd stage heating)
[note 3]
E
Emergency Heat Relay
[note 3]
G
Fan Relay
C
24 Volt AC Transformer Common
[note 1]
L
Optional System Fault Monitor
[note 4]
2 HEAT / 1 COOL - Including Auxiliary Heat
Set System Type to
22HP
Rh
24 Volt AC Power
Rc
Connected to Rh with supplied Jumper Wire
O/B
Changeover Valve
[note 2]
Y1
Compressor Relay (1st stage heating/cooling)
W2
Auxiliary Heat Relay (2nd stage heating)
[note 3]
E
Emergency Heat Relay
[note 3]
G
Fan Relay
C
24 Volt AC Transformer Common
[note 1]
L
Optional System Fault Monitor
[note 4]
2 HEAT / 2 COOL - No Auxiliary Heat
Set System Type to
32HP
Rh
24 Volt AC Power
Rc
Connected to Rh with supplied Jumper Wire
O/B
Changeover Valve
[note 2]
Y1
Compressor 1 Relay (1st stage heating/cooling)
Y2
Compressor 2 Relay (2nd stage heating/cooling)
G
Fan Relay
C
24 Volt AC Transformer Common
[note 1]
L
Optional System Fault Monitor
[note 4]
NOTES - Heat Pump Systems
[1]
Optional 24 Volt AC common connection
(required for Wi-Fi).
[2]
O (cool active) or B (heat active) is selected in
the Installer Settings menu.
[3]
Install a field supplied jumper between the
W2/AUX and W1/E terminals if there is
no separate emergency heat relay installed.
[4]
If the L terminal is used, the 24 Volt AC common
must be connected (C terminal).
Provide disconnect and overload protection as required.
Typical Wiring Configurations
NOTE:
The “System Type” option will be configured in the Installer Settings section.
Heat Pump Systems