Unpack the unit. Dispose of packaging material (→ Disposal chapter).
Lay the power cable to the installation site.
Use ELR elastic fixing cuffs to avoid transmission of vibrations to the duct system.
Screw the EHD roof socket only onto a suitable, level substructure to prevent leakage. For direct mounting of the fan on the ventilation duct, dismantle the EHD roof socket (remove 3 tapping screws).
Use suitable insulation, sound-absorbing and installation material between the fan and roof socket.
In the case of a free inlet, fit an SGR protective grille in front of the fan housing.
Fit a service switch at the installation site to be able to disconnect the fan from the power supply at all poles during cleaning, maintenance or repair work on site.