| 摘要 |
Apparatus for ventilating a room has a high throughput extractor duct (12) and/or intake duct (14) and a lower throughput sampling duct (16). Sensor (30) used by control means (38) to control extractor fan (12) and/or intake fan (34) with an order of priority according to the levels of different contaminants (humidity, smoke, carbon monoxide, radon), which require different ventilation responses. |
