| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To assure a tapping flow rate same as that of a case when a burner of a hot-water supply unit is operated, even when the burner of the hot-water supply unit is not operated, in a hot-water supply system supplying the hot-water by utilizing the preheated hot-water generated by an auxiliary heat source. <P>SOLUTION: This hot-water supply system comprises a water heater utilizing solar heat 10 having a heat storage tank 13 storing the preheated hot-water produced by solar heat, and a water heater 20 having a mixing adjustment valve 21 for supplying the preheated hot-water sent from the heat storage tank 14 and the hot-water of low temperature to a heat exchanger 22 while mixing them according to the necessity. The tapping temperature is controlled by a bypass valve 24a mounted on a bypass channel 24 bypassing the heat exchanger 22 in the water heater 20. The bypass valve 24a is kept at a predetermined opening corresponding to a valve opening in controlling the tapping temperature during the combustion of the burner, when the hot water of a water supply set temperature is supplied without operating the burner. <P>COPYRIGHT: (C)2004,JPO</p> |
