| 摘要 |
Service water heating for hot water supply and for heating a building, in which a device for measuring the amount of heat (26) is provided, which, on the one hand, determines and displays both the amounts of heat removed from the heat exchangers (25) for room heating as well as the amounts of heat removed with the tapped hot service water. In order to take into consideration the different conditions, the amounts of heat removed with the room heating are determined from the amount of water supplied and the difference between the flow temperature and the return temperature of the room heating section and the amounts of heat removed with the hot water are determined from the amount of water removed and the difference between the flow temperature and the temperature of the supplied cold water. <IMAGE>
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