| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot water supply system capable of surely performing air-bleeding of a circulation passage for boiling-up and a heat exchanger and a pump of a heat pump unit disposed in the circulation passage for boiling-up only by supplying the water from a water supply passage 18 without needing special air-bleeding work. <P>SOLUTION: In this hot water supply system, the water supply passage 18 and the circulation passage 24 for boiling-up are connected through a connection passage 38 by a switch valve 37 in a state that a hot water storage tank 17 is empty, and the water is supplied to the hot water storage tank 17 from the water supply passage 18 through the circulation passage 24 for boiling-up and the heat exchanger 32 and the pump 33 of the heat pump unit 31 disposed in the circulation passage 24 for boiling-up. The connection of the water supply passage 18 and the circulation passage 24 for boiling-up through the connection passage 38 is blocked by the switch valve 37 in a state that the hot water storage tank 17 is filled with the water, and the water is supplied from the water supply pipe 18 to a lower portion of the hot water storage tank 17. Accordingly, the special air-bleeding work is unnecessary, and the air-bleeding of the circulation passage 24 for boiling-up and the heat exchanger 32 and the pump 33 of the heat pump unit 31 disposed in the circulation passage 24 for boiling-up can be performed only by supplying the water from the water supply passage 18. <P>COPYRIGHT: (C)2008,JPO&INPIT |
