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Accessories for complete hot-water heating systems

To start up a complete hot-water underfloor heating system, various regulators are required, e.g. heating circuit manifolds, distribution cabinets, room thermostat, actuator and switching logic unit. The appropriate accessories guarantee proper operation. The different regulators are used to connect the underfloor heater to the heating system, distribute the heated water and regulate the temperature.

Return temperature limiter

The return temperature limiter is a self-operating proportional regulator that regulates the water temperature in the return line of the underfloor heating system. This regulator is absolutely essential in a hot-water underfloor temperature control system. It closes if the set target temperature is exceeded in the return flow, and opens if it is not reached. The adjustment range is between 20°C – 50°C. Flush-mounted return temperature limiters are also available.

Return temperature limiters in the online shop

Heating circuit manifold

The heating circuit manifold distributes the heat to the individual rooms. With this type of regulator, an underfloor heating system’s heating circuits (tube loops) each with a supply flow and a return flow are connected to the heating circuit manifold using compression fittings. The heating circuit manifold allows each individual heating circuit to be balanced hydraulically by means of a valve. Even distribution of heat is only possible when the flow conditions in all heating circuits are at an equally high level.

Heating circuit manifolds in the online shop

Distribution cabinet

The distribution cabinet accommodates the heating circuit manifold and other regulators of the underfloor heating system such as actuators and switching logic units.

Distribution cabinets in the online shop


This underfloor heating regulator automatically controls the valves of the heating circuit manifold. An electrical signal sent by the room thermostat opens or closes the relevant valve of the heating circuit manifold.

Actuator in the online shop

Room thermostat

The room thermostat of an underfloor heating system controls the energy supplied to the room. It is fitted in the area to be heated (for example living space). The thermostat sends an electrical signal to the actuator, which then opens or closes the relevant valve of the heating circuit manifold.

Room thermostat in the online shop

Switching logic unit – Terminal block for regulating individual rooms

The switching logic unit is a wiring aid. This underfloor heating regulator makes it easier to wire the individual components such as the actuator and room thermostat.

Switching logic unit in the online shop