| 摘要 |
<p>PURPOSE:To limit the air supply quantity for an accumulator within only the required quantity by a method wherein the air supply quantity for the accumulator is supplied with the air pushed out from the inside of an air passage by the action of a part of discharged hot-water from a hot-water pump. CONSTITUTION:One end 25a of an air passage 25 is opened to the open air side in a hot-water storage tank 1, other end 25b of the air passage is opened to a hot-water passage between the vicinity of the inlet of a hot-water supply pipe 9 and a hot-water supply pump 15, and the hot-water passage is connected to the discharging side of the hot-water supply pump 15. At the initial phase of the operation of the hot-water supply pump 15, the air inside of the air passage 25 is made to be pushed out, and the air is sucked into the hot-water supply pipe 9 by a part (w) of the discharged hot-water, accordingly, the air supply quantity for an accumulator 16 can be limited within the required quantity.</p> |
