| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat pump heating system capable of controlling heat radiation amount from a heating terminal stably.SOLUTION: A heating control part 151, in a heating operation of floor heating machines 200a and 200b, maintains a heating circulation pump 111 and a heat pump 51 in an operation state, and executes a control cycle comprising an ON-duty period in which heating capability of the heat pump 51 is made to be first heating capability, and an OFF-duty period in which the heating capability of the heat pump 51 is made to be second heating capability, the OFF-duty period being lower than the first heating capability, repeatedly. By changing the ratio between the ON-duty period and the OFF-duty period in each control cycle, the heat radiation amount from the floor heating machines 200a and 200b is adjusted. |
