| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent imbalance in exhausting even if a hot water supply-side latent-heat heat exchanger is disposed, in a combined heat source unit comprising a hot water supply-side heating passage 12 provided with a hot water supply burner 61 and a first sensible-heat heat exchanger 62, and a second heating passage 13 provided with a second burner 21 and a second sensible-heat heat exchanger 22 in such a state that both heating passages 12, 13 are formed in a common can body 3 in parallel with each other, and further provided with a fan 41 for supplying combustion air to the hot water supply burner 61 and the second burner 21. <P>SOLUTION: A hot water supply-side exhaust passage 43 and a second exhaust passage 48 extending from downstream ends of the hot water supply-side heating passage 12 and the second heating passage 13, respectively, are formed in parallel with each other in a second can body 30 connected with the can body 3, the latent-heat heat exchanger 60 is disposed in the hot water supply-side exhaust passage 43, and an exhaust resistor body 47 for properly setting an exhaust flow rate in the second heating passage 13 is disposed in the second exhaust passage 43. <P>COPYRIGHT: (C)2008,JPO&INPIT |
