The IsoTherm mixing module is designed to maintain a constant supply temperature in low-temperature heating systems (e.g. underfloor heating) and allows stepless adjustment of the supply temperature in the range from 27 to 42 °C.

It is used in systems in which high-temperature heating (eg Radiators) combined with low temperature. Since the surface temperature of the underfloor heating must not exceed 29°C in the living area and 35°C in the edge zone, the flow temperature must be kept lower than the boiler flow temperature.