The expansion card is an accessory, which, when connected to the heat pump, provides the following extra functions.
The heat pump can be used to produce cooling in summer. Either by passive cooling (cold retrieved from the borehole) or a combination of passive and active cooling (cooling produced by the heat pump compressor). Heat pump can produce cooling only in “heat stop mode“.
Used when the heating system needs to settle into a second temperature level, eg when you combine radiators with wet floor heating or when a shunt group is controlled by a separate heating curve (curve 2).
- Swimming pool
Used to control the temperature in a swimming pool. Temperature controlled by a separate sensor regardless of the heating system and hot water.
- Power limiter
Allows reducing the auxiliary heater to a power corresponding to the maximum available start current. (To use the function power monitor as needed refer to 3 the piece toroidal transformers.)