| 摘要 |
PROBLEM TO BE SOLVED: To prevent generation of water hammer in stopping a cascading hot water operation and to stop cascading hot water with high responsiveness, in a cascading hot water device including a cascading hot water nozzle 41 for making the warm water heated by a heat exchanger 51 for hot water supply, of a heat source machine 5 fall into a bathtub. SOLUTION: This cascading hot water device includes a cascading hot water solenoid valve 46 disposed in a cascading hot water pathway 42 for supplying the warm water from the heat exchanger 51 for hot water supply to the cascading hot water nozzle 41, a water amount adjustment valve 44 disposed on a part of the cascading hot water pathway 42 at an upstream side with respect to the cascading hot water solenoid valve 46, a draining pathway 47 branched from a part of the cascading hot water pathway 42 between both valves 44, 46, and a draining solenoid valve 48 disposed in a draining pathway 47. In stopping the cascading hot water operation, the cascading hot water solenoid valve 46 is closed after opening the draining solenoid valve 48, and then the draining solenoid valve 48 is closed after decreasing the water amount by the water amount adjustment valve 44. COPYRIGHT: (C)2010,JPO&INPIT
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