| 摘要 |
PURPOSE:To facilitate the temperature setting and to reduce the temperature nonuniformity by providing a heating temperature control circuit and a supply water temperature control circuit both controled by a temperature sensor of a heating water circulation circuit, and driving a fuel supply valve using said temperature control circuits. CONSTITUTION:The combination of the hot water supplier and the room heater, which includes an indirect heating type heat exchanger having a supply water heating coil in the heating water circulation circuit (not shown), is provided with the control temperature sensor 14 to the heating water circulation circuit, and the heating temperature control circuit 15 and the supply water temperature control circuit 17 both of whose temperature controls are effected by the temperature sensor 14, and the temperature control circuits 15, 17 drive the fuel supply valve 18 for control ling the temperatures. In consequence, by the single temperature sensor 14, the heating temperature and the supply water temperature can be optionally and respectively set and controlled, and since the temperature hysteresis width can be set narrowed, the heating temperature nonuniformity can be obviated. |
