| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent temperature from being lowered during hot water supply by preventing water from being supplied anew to a solar heat warm water heater body until it is detected by a detection means that the amount of water storage in the solar heat warm water heater body is a predetermined amount. SOLUTION: When a level detector 24 detects a predetermined low level, water is automatically supplied through a three-way valve 12. Hot water is supplied from a solar heat warm water heater body 11, and water supply is started after the elapse of a predetermined time since the hot water supply, and further the water supply is continued until a water level sensor 24 detects a predetermined high level. In contrast, after the water supply is once started, heated hot water is supplied through the three-way valve 12 via a hot water supply piping 17 until the water sensor 24 detects a predetermined low level. Water supply is not performed anew until the amount of hot water stored in a heat storage tank 13 becomes a predetermined value or lower after the water supply is once started in such a manner, so that heated hot water and supply water are prevented from being mixed unlike the prior art. Accordingly, temperature is prevented from being lowered during the hot water supply.</p> |
