Thermostats for heating and cooling

RAA.. – analogue room thermostat

Analog room thermostat

The RAA.. room thermostats are tailored to maintain the required room temperature for both heating and cooling systems. They offer 2-position control with a 2-wire connection and acquire the room temperature by means of a gas expansion diaphragm.

Typical use

  • Public buildings, schools

  • Residential buildings

  • Light industrial buildings


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RCU.. – digital room thermostat without display

Digital room thermostat without display

The thermostats are tailored to control the room temperature in individual rooms of ventilation or air conditioning plants that are heated or cooled with radiators, chilled ceilings, etc.

Typical use

  • Electric heaters

  • Thermic or electric valve actuators

  • Damper actuators


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RDX.. – room temperature controller with LCD

Room temperature controller with LCD

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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RDU3.. – room temperature controller

Room temperature controller

The room temperature controller is tailored to control the room temperature in individual rooms of ventilation or air conditioning plants that are heated or cooled as well for valves and damper actuators with 0-10 V or ON/OFF demand controls.

Typical use

  • Control of 3-position valve or damper acuators


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RDD.. – room temperature controllers with LCD

Room temperature controllers with LCD

The controller acquires the room temperature with its integrated sensor and maintains the setpoint by delivering control commands. It controls the room temperature in heating systems.

Typical use

  • Control of thermic valves or zone valves

  • Gas or oil burners

  • Fans

  • Pumps


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RDH.. – room temperature controller with large LCD

Room temperature controller with large LCD

The battery powered electronic room temperature controller is independent and communicates via 2-position output. The required temperature is adjusted with the large setting knob on the front of the unit.

Typical use

  • Control of thermal valves or zone valves

  • Combi boilers

  • Gas or oil burners

  • Fans

  • Pumps


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RAV.. – self-learning room temperature controller

Self-learning room temperature controller

The RAV.. room thermostat is ideal for customers looking for an analogue design combined with the very best in comfort and energy saving. The patented self-learning two-position algorithm providing PID control has the flexibility to operate in the most demanding temperature control applications.

Typical use

  • Solenoid valves of instantaneous water heaters

  • Solenoid valves of atmospheric gas burners

  • Forced draught gas and oil burners

  • Circulating pumps in heating systems

  • Electric direct heating

  • Fans of electric storage heaters

  • Zone valves (normally closed)


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RDJ.. – room thermostat controller with 24-hour time switch and large LCD

Room thermostat controller with 24-hour time switch and large LCD

The RDJ.. is used to control the room temperature in heating systems. The controller has preprogrammed functions like Automatic, Comfort, Energy Saving and Frost Protection.

Typical use

  • Control of thermal valves or zone valves

  • Combi boilers

  • Gas or oil burners

  • Fans

  • Pumps


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RDE.. – room thermostat controller

Room thermostat controller

The RDE.. is used for the control of the room temperature in heating systems. The controller acquires the room temperature with its integrated sensor.

Typical use

  • Control of thermic valves or zone valves

  • Gas or oil burners

  • Fans

  • Pumps


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REV.. – room thermostat controller

Room thermostat controller

The REV.. is used for the control of the room temperature and works mains independant. The patented self-learning 2-position algorithm providing PID control has the flexibility to operate in the most demanding temperature control applications.

Typical use

  • Control of solenoid valves of instantaneous water heaters

  • solenoid valves of atmospheric gas burners

  • Heating circulating pumps, zone valves (normally closed)

  • Electric direct heating systems or fans of electric storage heaters


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RDG.. – room thermostat controller

Room thermostat controller

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 switch-over to command energy saving mode, floor temperature limitation, dew point monitoring etc.


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