| 摘要 |
<p>First and second floor heating panels (31, 32) and a heat exchanger (42) for ventilation are connected in parallel to a water heat exchanger (21). The heat exchanger (42) for ventilation is disposed upstream of a ventilation device (41) in the direction of flow of intake outside air. As a result of this configuration, the unwanted heat loss of warm water can be prevented and the freezing of the ventilation device (41) can be reliably prevented.</p> |
