| 摘要 |
<p>An apparatus for air heating systems, e.g. for residences, including a circulation unit (2) for recycling of air as well as an air heating unit for the heating air before its supply to the residential living areas. At least two ducts (8, 10) lead from the circulation unit for air transport to different zones of the residence. The air heating unit includes individually controlled radiators (12, 14) for each of the ducts. A ventilation unit with valve means for the supply of ventilation air is coupled to each of the ducts between the circulation unit and the radiators.</p> |
