| 摘要 |
PURPOSE:To provide a hot water heater by effectually utilizing the output of a burner by providing connection means for connecting pipe lines. CONSTITUTION:There are provided a closed pipe passage leading from an inlet end 8a to an inlet end 8a after passage through a heat exchanger 5a, a hot water temperature detector 10a, a structure 6a, a circulation pump 7a, an outlet end 9a, and two high temperature loads A, and a closed pipe passage leading from an inlet end 8b to the same inlet 8b after passage through a heat exchanger 5b, a hot water temperature detector 10b, a cistern 6b, a circulation pump 7b, an outlet end 9b, and a high temperature load A. There are provided opening/closing valves 11a, 11b between the one circulation pump 7a and the outlet end 9a and between the other inlet end 8b and the heat exchanger 5b, and further provided control valves 12a, 12b, 12c between the one inlet end 8a and the other inlet end 8b, between the one outlet end 9a and the other outlet end 9b and between an intermediate portion between the one circulation pump 7a and the opening/closing valve 11a and an intermediate portion between the other heat exchanger 5b and the opening/closing valve 11b. |
