| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hot water storage type hot water supply system capable of preventing freezing of a circulation passage between a hot water storage tank and a heat source while saving energy necessary for preventing freezing. <P>SOLUTION: In this hot water storage type hot water supply system performing an antifreezing operation by circulating the water to a circulation passage 128 between the hot water storage tank 20 and a power generating unit 110 when an outside air temperature is lower than a prescribed temperature, the water is circulated in the circulation passage 128 through the hot water storage tank 20, when the water temperature inside of the hot water storage tank 20 detected by a hot water storage tank thermistor 35a is lower than a reference temperature based on a hot water supply set temperature set by a remote controller 23, and the water is circulated in the circulation passage 128 through a bypass passage 41 when the water temperature inside of the hot water storage tank 20 is higher than the reference temperature. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
