Electronic surface-mounted climate controller for heating/cooling control in 2- and 4-pipe systems for hotels, residential and business premises. Up to 5 valve drives (24V~, normally closed or normally open) can be controlled per output. The switch can be used to choose between the operating modes Off/Comfort/ECO. Particularly suitable for cooling ceiling control due to the option of dew point monitoring via optional external dew point sensors. In order to compensate for the inertia of control systems with cooling ceilings, the device has a temperature sensor input for connecting an external radiation sensor (optional). The factory-set zero point of approx. 21°C can be adjusted by +/- 5K in the device. The setting knob can be used to adjust the target temperature in the range of +/- 3K around the set zero point. As a government variant where the controller should be inaccessible to unauthorized persons, the external sensor can also be designed as a room sensor (optional). An internal potentiometer can be used to select the use of the internal, external or both sensors with an adjustable weighting. Contact inputs for ECO function and OFF (frost protection).
