| 摘要 |
A vent hole 12 is provided in the upper part of a front panel 1e of an outer case 1. Air in a room having passed through a section in which a main heat exchanger 6 is arranged is led to the vent hole 12 through a space between an upper plate 1b of an outer case 1 and an upper wall 2d of a combustion housing 2. A drain dish 18 is arranged on the upper face of the upper wall 2d of the combustion housing 2.
|
