| 摘要 |
PROBLEM TO BE SOLVED: To provide a heating system including both a heat pump unit and a burner unit as heat sources and capable of performing an appropriate heating operation.SOLUTION: A hot water supply heating system 2 includes a heater 76, a heat pump 50, a burner heating device 82, a heating water circulation passage 71, a thermistor 78 and a control device 100. The control device 100 operates the burner heating device 82 in the case that a detected temperature T1 of the thermistor 78 is equal to or less than a heating set temperature -TA or in the case that a state in which the detected temperature T1 of the thermistor 78 is equal to or less than a heating set temperature -TB (TB is lower than TA) continues for a prescribed period. In addition, the control device 100 stops an operation of the burner heating device 82 in the case that the detected temperature T1 of the thermistor 78 is equal to or more than a heating set temperature +TC. |
