Fan
- Unpack unit and take off cover.
- To release the cover, push the catch upwards.
![](../Images/png/72151435__Web.png)
- Fit supplied foam strip centred in socket.
![](../Images/png/73295883__Web.png)
The foam strip must be fitted to the ECA 150 ipro H and KH, so that the units do not draw in any infiltration air from outside.
- For an electrical surface-mounted connection, drill the housing segment [2.1] (→ following figure) (Ø 11 mm).