| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat pump type hydronic heater capable of sufficiently increasing a temperature of warm water for hot water supply in a hot water storage tank, even when an operation is executed by using the hot water storage tank including an existing heat exchanger for hot water supply.SOLUTION: A heat pump type hydronic heater includes a heat pump type heat source 1, a water-refrigerant heat exchanger 4 exchanging heat between a refrigerant heated by the heat pump type heat source 1 and water, a circulation pump 6 circulating warm water for circulation heated by the water-refrigerant heat exchanger 4, a hot water storage tank 3 for storing warm water for hot water supply, a heat exchanger 5 for hot water supply, exchanging heat between the warm water for circulation and the warm water for hot water supply, and a control means. The control means repeats operations of the heat pump type heat source 1 several times to heat the warm water for hot water supply. |
