| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately control drainage, in a combustion device in which condensate water generated in a heat exchanger for recovering latent heat, is drained. <P>SOLUTION: A condensate water draining means 40 includes a collection tray 41 disposed below a sub-heat exchanger 8 for recovering latent heat to collect the condensate water dropping from the sub-heat exchanger 8, a draining circuit 42 connected between the collection tray 41 and a bathtub hot water supply circuit 75, a drain tank 44 disposed in the draining circuit 42, and a drain level detecting means 50 detecting a level of the condensate water in the drain tank in stages. The control means 60 calculates an integrated combustion heat quantity in a burner 4a after the detection of a prescribed level by the drain level detecting means 50 in a process of increasing the level of the condensate water in the drain tank 44, as a value corresponding to an accumulation amount of the condensate water accumulated in the drain tank 44, and stops the combustion of the burner 4a, displays warning on a remote controller 65, and drain the condensate water in the drain tank to a bathtub, when it is determined that a calculated value indicating the integrated combustion heat quantity or the converted accumulation amount of the condensate water reaches a prescribed value. <P>COPYRIGHT: (C)2013,JPO&INPIT |
