ALRE Climate controller

Electronic surface-mounted climate controller for heating and cooling regulation in 2-pipe and 4-pipe systems for hotels, residential, and commercial spaces. Up to 5 valve actuators (24V~, normally closed or normally open) can be controlled per output. The switch allows selection between the operating modes Off, Comfort, and ECO. Particularly suitable for controlling chilled ceilings due to the possibility of dew point monitoring via optional external dew point sensors. To compensate for the inertia of control loops with chilled ceilings, the device features a temperature sensor input for connecting an external radiation sensor (optional). The factory-set zero point of approximately 21°C can be adjusted within the device by +/- 5K. The setting knob allows the desired temperature to be adjusted in the range of +/- 3K around the set zero point. As a variant for authorities, where the controller should be inaccessible to unauthorized persons, the external sensor can also be configured as a room sensor (optional). An internal potentiometer allows the selection of using the internal sensor, the external sensor, or both sensors with adjustable weighting. Contact inputs for ECO function and Off (frost protection).