| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat source device of high usability capable of achieving sufficient hot water supplying and air-heating capacities even though it is compact.SOLUTION: A combined heat exchanger 1 for hot water supply and air-heating is configured by arranging a one-kind pipe conduit arrangement portion 111 in which only a liquid circulation pipe conduit 13 for hot-water supply is disposed, and a two-kind pipe conduit arrangement portion 112 in which the liquid circulation pipe conduit 13 for hot-water supply is disposed in a state of being vertically held by liquid circulation pipe conduits 12 for air-heating, in adjacent to each other. A burner device 2 for hot-water supply is disposed at a lower part of the one-kind pipe conduit arrangement portion 111 and a burner device 5 for air-heating is disposed at a lower side of the two-kind pipe conduit arrangement portion 112. When a hot water supply requirement capacity is larger than a combustion face switching reference capacity in a simultaneous operation for hot-water supply and air-heating, combustion of the burner device 5 for air-heating or the burner devices 2, 5 for hot-water supply and air-heating is controlled corresponding to the hot water supply requirement capacity, and when the hot water supply requirement capacity is lower than the combustion face switching reference capacity, only the combustion of the burner device 2 for hot-water supply is controlled while stopping the burner device 5 for air-heating.SELECTED DRAWING: Figure 1 |
