| 摘要 |
PURPOSE:To provide one boiler two circuit type hot water supplying apparatus in which a temperature adjustment of a circuit preferentially operated can be carried out positively not only in the case that each of the circuits is independently operated but also in the case that the two circuits are concurrently operated and further to prevent an excessive thermal stress from being applied to the heat exchanger in the preferential circuit. CONSTITUTION:There is provided one boiler two circuit type hot water feeder having a heat exchanger 21 of a hot water feeder circuit 20 and another heat exchanger 31 of another circulating and heating circuit 30 within one combustion boiler 10, wherein in the case the hot water temperature in the preferential circuit 20 does not reach the set temperature during the concurrent operation of the circuits 20 and 30, a flow rate of the other circuit 30 is automatically reduced. |
