| 摘要 |
PROBLEM TO BE SOLVED: To provide a storage type hot water supply system capable of enhancing efficiency of a heat pump when the heat pump and an auxiliary heat source machine are operated together to supply hot water.SOLUTION: A storage type hot water supply system includes a second hot water storage control part 122 for performing second boiling operation which prohibits performance of first boiling operation by a first hot water storage control part 121 for heating water in a hot water storage tank 11 to a boiling temperature by a heat pump unit 50 when second hot water supply operation involving operation of a water heater 87 is performed, heats water at a lower part in the hot water storage tank by the heat pump unit 50 to a second boiling temperature lower than the first boiling temperature, and returns the water to an upper part of the hot water storage tank 11. |
