| 摘要 |
PURPOSE:To carry out automatic hot water supply and, when a hot water supply capacity is exceeded, hot water is supplied automatically by opening an additional combustion electromagnetic valve and automatically stop supplying the hot water at the same time by providing a hot water supply electromagnetic valve and an additional combustion electromagnetic valve, thermistor for hot water supply, thermistor for additional combustion, hot water supply flow rate control valve, water supply detection element and control circuit. CONSTITUTION:Hot water in a large amount is automatically supplied to a bath tub from a heat exchanger 1 for hot water supply by opening a hot water supply flow rate control valve 24 during automatic hot water supply, and the hot water temperature is controlled by operating a proportional control valve 13 with an output calculated in a control circuit by a signal from a thermistor 18 for hot water supply to control the amount of combustion in the burner for hot water supply. Further, when the hot water supply capacity is exceeded, an additional combustion electromagnetic valve 15 is opened by a signal from the control circuit and a burner 16 for additional combustion is performed at the same time, and, further, hot water is supplied automatically to the bath tub by additional combustion operation with a pump 3 being operated. |
