| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hot water supply system capable of hot water supply operation to the utmost even when any trouble happens in a hot water supply connection unit, and further of preventing without fail hot water from being outputted dangerously. SOLUTION: There are provided a heat storage tank 1 for storing warm water produced with a solar heat utilization warm water unit 10, and a hot water supply connection unit 20 including a mixing adjusting valve 21 mounted thereon for sending warm water at an objective temperature (hot water supply set temperature or fixed temperature) to the hot water supplier 30 by mixing supply water into warm water sent from the heat storage tank 14 at need. When any trouble happens in the hot water supply connection unit 20, the hot water supply connection unit 20 achieves safe operation. When the trouble of the hot water supply connection unit 20 happens in the mixing adjusting valve 21 itself, the hot water supply connection unit 20 fails to properly execute the safe operation with the fear of outputting high temperature hot water, so that hot water supply operation in an operation mode associated with automatic pouring of hot water into a bathtub is limited.</p> |
