Room thermostats for heat pumps

RDX.. – room thermostats

Room thermostat

The controller acquires the room temperature via its integrated sensor or external room temperature sensor or via an external return air temperature sensor and maintains the setpoint by delivering 2-position control commands.

Typical use

  • Control of heat pump systems (water-to-water or air-to-water heat pumps)

  • Control of actuating devices in heating or cooling systems


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RDF.. – room thermostats

Room thermostat

The digital RDF room thermostats are tailored for 2-pipe, 2-pipe plus electric heater and 4-pipe fan coil applications with automatic heat/cool changeover. The desired room temperature is selected via push buttons on the front of the thermostat.

Typical use

  • For control of the room temperature in individual rooms that are heated or cooled with 2-pipe fan coil units

  • For the control of rooms that are cooled with DX type equipment

  • For opening or closing a valve and for switching a 3-speed fan


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RDG.. – room thermostats

Room thermostat

The RDG.. room thermostats are very versatile. Thanks to their large display and intuitive operating concept with setting knob and large buttons, the units are extremely user-friendly and the backlit display even allows the unit to be operated in the dark. The required application can simply be selected via DIP switches before mounting the unit. The RDG.. uses for the room temperature control either a 2-position, P, or PI algorithm. 

Typical use

  • Control of chilled or heated ceiling with electrical heater, radiator, or floor heating

  • 2-stage heating or cooling applications

  • Additional function like remote temperature sensing for return air control, operating mode switchover to command energy saving mode, floor temperature limitation, dew point monitoring etc.


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