Fan
- Unpack unit and take off cover.

- To release the cover’s locking hook, unlock using a screwdriver.
- Remove internal combination sensor.

5
Internal combination sensor
6
Electronics cover
- Remove the electronics cover. Unlock locking hook (arrow) with screwdriver.
- Fit supplied sealing strip centred in socket.

- Fit supplied foam strip centred in socket.
The foam strip must be fitted on the unit so that the units do not draw in any unwanted air from outside.