IBC AHU 800 User Manual

2.8.5 Wiring single-stage heat
pump with a boiler or combi
boiler as backup
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
Dry contact from the air handler to the boiler or combi boiler that enables a call for heat
The reversing valve operation is selectable with the AHU app: the default setting energizes
the O/B terminal during cooling
Required: the outdoor sensor for balance point control of backup heat source is available
separately as IBC outdoor sensor kit P-9067.
Required: sensors for cooling applications are available separately as IBC A/C sensor kit P-
1015
Figure 40 Single-stage heat pump with a boiler or combi boiler as backup wiring
Settings in the IBCconnect app
1.
Tap (menu icon), and select Basic Settings.
2. Set Heat Mode to Stg 1 HP, Stg 2 Aux.
3. Set Cool Mode to 1 Stage HP.
4. Set Boiler Heating to Boiler Backup.
41
2.8.5 Wiring single-stage heat pump with a boiler or combi boiler as backup

IBC AHU 800 Specifications

General

Brand	IBC
Model	AHU 800
Category	Air Handlers
Language	English