Main parts
R model in the figure. In the L model, the parts are mirrored.
| No. | Part | No. | Part |
|---|---|---|---|
| 2a | Heat recovery cell | 6a | Post-heating resistor |
| 3a | Extract air fan | 7a | Safety switch |
| 3c | Supply air fan | 10a | Control panel |
| 4a | Fine filter for supply air | 11a | Internal carbon dioxide and humidity sensor |
| 4b | Coarse filter for supply air | 11c | Carbon dioxide sensor (optional) |
| 4c | Coarse filter for extract air | 11d | Humidity sensor (optional) |
| 5a | Bypass damper of the HR cell | 11e | VOC sensor (optional) |