| 摘要 |
<p>PURPOSE:To stably supply hot-water even with variations of the need of the hot-water by connecting the upper portion of a hot-water storage tank with a water tank through a first piping, connecting a water supply outlet of a hot-water heater with the hot-water storage tank through a second piping, and a water inlet of the hot-water heater with the hot-water tank through a third piping via a circulation pump. CONSTITUTION:Since a water tank 4 and a hot-water storage tank 3 are connected through a first piping 8, water in the water tank 4 flows into the hot-water storage tank 3 via the first piping 8 and hence is stored in the hot-water tank 3 and the water tank 4. A hot-water supply inlet 9 and the influent water port 11 are connected with the hot-water storage tank 3 via third pipings 10, 13 and a circulation pump 12 is provided en route with the third piping 13, provided joint portions between the hot-water storage tank 3 and the second and third pipings are disposed at the upper and lower portions of the hot-water storage tank 3, relatively low temperature water is stored below the hot-water storage tank 3 which water is then fed into the hot-water heater 2 through the third piping 13 where it is heated into hot-water. The resultant hot-water is returned to the upper of the hot-water storage tank 3 through the second piping 10. Hereby, the stable amount of hot-water supply can be maintained.</p> |
