Main parts
R model in the figure. In the L model, the parts are mirrored.
| No. | Part | No. | Part |
|---|---|---|---|
| 1 | Extract air fan | 8 | Post-heating resistor |
| 2 | Supply air fan | 9 | Safety switch |
| 3 | Fine filter for supply air | 10 | Internal carbon dioxide and humidity sensor |
| 4 | Heat recovery cell | 11 | Control panel |
| 5 | Bypass damper of the HR cell | 12 | Carbon dioxide sensor (optional) |
| 6 | Coarse filter for supply air | 13 | Humidity sensor (optional) |
| 7 | Coarse filter for extract air | 14 | VOC sensor (optional) |