2.8.8 Wiring two-stage heat pump (2-stage
thermostat)
Required if the boiler or the combi boiler does not have control of the pump
Optional: 'G' for fan-only operation and 'C' for t-stat common
The reversing valve operation is selectable with the AHU app: default setting energizes O/B
terminal during cooling
Required: outdoor sensor for balance point control of backup heat source is available
separately as IBC outdoor sensor P-9067.
Required: sensors for cooling applications are available separately as IBC A/C sensor kit P-
1015
Figure 43 Two-stage heat pump (2-stage thermostat) wiring
Settings in the IBCconnect app
1.
Tap (menu icon), and select Basic Settings.
2. Set Heat Mode to Stg 2 HP.
3. Set Cool Mode to 2 Stage HP.
4. Set Boiler Heating to None.
5.
Tap (SAVE).
2.8.8 Wiring two-stage heat pump (2-stage thermostat)