| 摘要 |
PROBLEM TO BE SOLVED: To stabilize a hot water supply temperature and to improve convenience of a user, in a constitution for acquiring a desired hot water supply temperature by selecting one of high temperature water and medium temperature water.SOLUTION: A hot water storage type heat pump water heater 35 includes an HP unit 7, a hot water storage tank 8, a water supply pipe 9, a heat exchanger 20 for bath, a hot water introducing pipe 20a, a first hot water pipe 21a, a first hot water supply mixing valve 22, a mixing valve 23 for bath, a control unit 36, a second hot water supply mixing valve 78 and a medium temperature pipe 79. The control unit 36, during execution of a hot water storage operation or a heating operation, when executing a hot water supply operation, controls the first hot water supply mixing valve 22 and the second hot water supply mixing valve 78 in a state where the use of the hot water taken out from the medium temperature pipe 79 is prohibited. Thereby, even when the temperature of the hot water taken out from the medium temperature pipe 79 is likely to fluctuate, the hot water supply temperature can be stabilized.SELECTED DRAWING: Figure 5 |
