| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the wasteful use of thermal energy in a reheating operation of bathtub hot water. <P>SOLUTION: A heat source device is provided in which a liquid circulation passage for air heating which circulates liquid in a heating device and a reheating circulation passage connected to a bathtub are thermally connected, and the liquid in the liquid circulation passage for air heating is circulated while being heated by a heat exchanger for air heating, and the bathtub hot water is circulated through the reheating circulation passage to carry out a reheating operation of the bathtub hot water. The heat source device is provided with an reheating liquid circulation mode switching means 64 functioning in such a manner that, when reheating the bathtub hot water when the presence of a bather is determined by a bather presence determination means 63, the heat source device is operated in a high-temperature liquid circulation mode in which the liquid to be fed in the liquid circulation passage for air heating is circulated as a preliminarily determined high setting temperature, and when reheating the bathtub hot water when the absence of a bather is determined, the heat source device is operated in a low-temperature liquid circulation mode in which the liquid to be fed to the liquid circulation passage for air heating is circulated as a preliminarily determined low setting temperature that is lower than the high setting temperature. <P>COPYRIGHT: (C)2012,JPO&INPIT |
