9.7 Collector frost protection settings
If necessary, set the collector frost protection on in the service menu, under Device settings ► El. heater.
Operating mode indicates the operating mode of the electric heater.
Collector’s temperature limit for electric heater operation
Under Src.temp limit, you can set a limit value for the collector’s incoming water temperature (sensor B91); at this temperature the electric heater starts to heat the charge circuit supply water alongside the compressor.
Set the value based on the application in question. The factory setting is –4 °C.
Power sequence settings
You can set the start and hysteresis values for up to three power sequences. Moreover, you can set the P value and integral time for capacity calculation.