The device is assembled of a coolant container (2) with an inlet (2a) and an outlet (2b) located on top of the radiator (3) comprising several ducts held with their upper ends in a bottom element (11) at the container (2). An additional heating unit (5) wi...

The heat exchanger (3) and/or the unit accommodating the second medium is/are in thermal contact with the heater (2) and the heat exchanger is in thermal contact with the unit (4) to accommodating the second medium.