| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hot water supply system capable of hot water supply by effectively making use of warm water stored in a heat storage tank even when supply water temperature is relatively high. SOLUTION: When warm water at a hot water supply set temperature or higher is sent to a hot water supply connection unit 20 from a heat storage tank 14, the hot water supply connection unit 20 performs hot water supply set temperature control for producing warm water at the hot water supply set temperature by mixing supply water. When warm water lower than the hot water supply set temperature is sent to the hot water supply connection unit 20 from the heat storage tank 14, the hot water supply connection unit 20 performs fixed temperature control for producing warm water at a predetermined fixed temperature by mixing the supply water. When the warm water lower than the hot water supply set temperature is sent to the hot water supply connection unit 20 lower than the hot water supply set temperature from the heat storage tank 14, and only when the temperature of the supply water is higher than the fixed temperature, the hot water supply connection unit 20 forcedly performs the hot water supply set temperature control after passage of 5 seconds since the starting of the hot water supply.</p> |
