| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump water heater that enables an energy-efficient hot water filling operation, etc. <P>SOLUTION: If feed water temperature is less than an upper limit feed water temperature that is a predetermined temperature corresponding to fresh air temperature, a hot water filling operation using both the operation of supplying water from a hot water storage tank 6 and a heat-pump cycle operation is performed. Mixed water of the water supplied from the hot water storage tank and water heated by a water-refrigerant heat exchanger is supplied via a hot water filling mixing valve. The tapping temperature from the water-refrigerant heat exchanger in the hot water filling operation is made lower than a tapping temperature in a hot water storing operation. <P>COPYRIGHT: (C)2013,JPO&INPIT |
