Unlock and remove the housing cover with a screwdriver.
Attach the fixing holes to the arrow positions. When installing in the wall, align the housing and note the installation position (TOP).
Affix the supplied sealing strip all the way around the housing connections so that the internal shutter does not draw in unwanted air.
Cut off the cap of the cable grommet so that it tightly encloses the power cable. Cut off at least 5 mm of the cap (the power cable can be bent better and the electronics cover can be fitted correctly).
Guide the power cable through the cable grommet.
Insert the cable grommet with the power cable into the housing. If necessary, seal the cable grommet.
Insert the housing into the wall sleeve/wall breakthrough and screw it in place. For wall installation, observe installation position TOP.