9.5 Charge circuit settings
The settings can be found in the service menu, under Device settings ► Charge circuit.
Charge temperature difference
Sp.dT determines the condenser temperature difference (dt) between the supply and the return water sensors. Values from 4 to 15 K are allowed (factory setting = 5.0 K). Example values are listed in the table.
| Form of heating | Example value |
|---|---|
| Underfloor heating | 5 K |
| Radiator heating | 7–10 K |
| Accumulator charge | 7–10 K |
Charge pump speed
You can set the minimum and maximum speed values for the condenser circulator pump, within which the speed will remain during charging.
Values from 20 to 60 % are allowed for the minimum speed (factory setting = 40 %), and values from 70 to 100 % are allowed for the maximum speed (factory setting = 100 %).