CONTINENTAL EDISON CEH6052BVB1 Guide D'utilisation page 42

Step 4.Screw the lower chimney bracket on the
lower chimney by using 2 screws(ST4x8mm).
Step 5.Install the lower chimney on the appliance,
and mark the holes position on the wall.
Step 6.Remove the lower chimney, then drill holes
in the wall: hole with diameter Φ4 mm screw.
42