| 摘要 |
PURPOSE:To stabilize the hot water temperature, reduce cost, and improve construction work with freedom in installation by firing also a burner for room heating and opening an additional burning temperature adjusting valve and supplying automatically hot water to a bath tube with hot water recycled in a bath tub heater when a hot water supply device's hot water supplying capability is exceeded during automatic hot water supply and closing a supply hot water flow rate control valve at an arbitrary set value by a supply water detection element to stop automatic hot water supply. CONSTITUTION:A comparator 40 perform a comparison operation to find the signal of a thermistor 23 is lower than a set value of an automatic supply hot water temperature and the difference between the hot water temperature and a desired bath temperature is large, and when it is judged that the situation exceeds the hot water supply capability, a room heating operation control section 46 is actuated and an electromagnetic valve 20 for room heating is opened, a room heating burner 21 is fired at the same time and a pump 3 is driven, opening an additional burning temperature adjusting valve 37 to recycle the hot water to a bath heater 9, supplying hot water automatically so as to give a desired bath temperature and controlling stably the bath tub hot water temperature. The amount of automatically supplied hot water is integrated up to a set value by a water supply detection element 22, and when it reaches the set value, a supply hot water flow rate control valve 35 is closed to stop automatic hot water supply. |
