REGELEINRICHTUNG

The invention relates to a regulation device having a controller (12, 12') which is connected to at least one actual value transmitter (7, 30, 36), a desired value transmitter (40) and an actuator (14/15/17) and a control path. In order to improve the control behaviour, it is provided that a fuzzy controller (10, 10') is arranged in the desired value path (43) of the controller (12, 12'). In a method for regulating the process water discharge temperature of a circulating water heater, it is for example ensured, by means of a fuzzy controller acting as logical coupling element, that before changing over the circulating water heater from hot water to process water tapping operation at high forward flow temperature, the output signal of the logical coupling element is kept small, or vice versa.