| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat source device capable of achieving sufficient hot water supply and heating capacities though it is compact.SOLUTION: An output side of a heat exchanger for main heating disposed in a heating circuit 7 and a hot water supply heat exchanger 4 for recovering latent heat disposed in a hot water supply circuit 45 are thermally connected by a liquid-water heat exchanger 33 for hot water supply-heating connection. A latent heat heat-exchange bypass passage 108 for circulating a heat medium circulation passage of the heating circuit 7 without passing through the heating heat exchanger 6 for recovering latent heat by driving a circulation pump 9 for heating, is disposed, and a flow rate of the liquid-water heat exchanger 33 for hot water supply-heating connection is increased by switching from a bypass route for circulating the heat medium through the passage 108, the liquid-water heat exchanger 33 for hot water supply-heating connection and a heat exchanger for main heating, to a latent heat heat-exchange route for circulating the heat medium through both of the bypass passage 108 and the heating heat exchanger 6 for recovering latent heat, and hot water supply capacity compensation capacity by heat movement from a heating circuit 7 side to a hot water supply circuit 45 side is improved.SELECTED DRAWING: Figure 1 |
