The room temperature controller CRK24-B1 is precisely designed for the regulation of heated / chilled ceilings. The output sequence of the controller is calibrated to the new 6-way ball valve EXT-K3B2-..-.. with LR24A-MP / LR24A-SR actuator. This controller should therefore only be utilised in the actuator in combination with the 6-way ball valve.
Energy hold off(EHO) In energy saving mode, the room temperature is regulated to the building protection level, i.e. the heating setpoint is significantly reduced or the cooling setpoint is significantly increased, for instance in a room with an open window.
Pre-comfort The room temperature is reduced to stand-by level, i.e. the heating setpoint is slightly reduced and/or the cooling setpoint is slightly increased, for instance in a room that is temporarily unoccupied.
Frost If the current room temperature falls below 10°C, then the frost function will be activated.
Dew point limitation If the optional connectable dew point limiter responds, then the valve is moved into neutral position.
External temperature sensor An external temperature sensor can be connected at analogue input ai1.
External setpoint shift An external DC 0 ... 10 V signal at the analogue input ai2 can be used to shift the basic setpoint by 0 ... 10 K, e.g. for summer/winter compensation.The functions are described in detail on pages 9 to 13.