| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat source device capable of sufficiently obtaining hot water supply and air-heating performances even though it is compact, and suppressing dew condensation on a heat exchanger.SOLUTION: A heat source device is provided with a hot water supply circuit 5 having a main hot water supply heat exchanger 3 and a hot water supply heat exchanger 4 for recovering latent heat, and an air-heating liquid circulation circuit 8 having a function for circulating a liquid heat medium supplied to a heater, and a heat exchanger 11 for heating of the air-heating liquid circulation circuit 8, and the main hot water supply heat exchanger 3 are heated by a burner 2 as an integrated single-can and two-water channel type heat exchanger 1. There are further provided a liquid-water heat exchanger 33 having a configuration that a water conduit 13 of the main hot water supply heat exchanger 3 is held while kept into contact with a liquid circulation conduit 12 of the air-heating heat exchanger 11 at its upper and lower portions, and thermally connecting, for example, a circulation conduit of water introduced from the hot water supply heat exchanger 4 for recovering latent heat to the main hot water supply heat exchanger 3, and a liquid circulation conduit of the air-heating liquid circulation circuit 8, and a bypass passage 34 for circulating the liquid of the air-heating liquid circulation circuit 8 without passing through the liquid-water heat exchanger 33. |
