If the outlet for the extract air of a extractor hood is not available on site, a core hole is the solution. That sounds more complicated than it actually is. Our notes lead you to your destination.
Mounting the wall conduct in a core hole
The minimum diameter of the core hole depends on the diameter of the wall conduct:
100 mm at least 103 mm
125 mm at least 132 mm
150 mm at least 162 mm
The minimum and maximum length of the wall conduct are to be observed. Exhaust air wall conducts are usually telescopic and can be shortened.
Carry out the core drilling and remove any masonry residue and drilling dust.
Adjust the telescopic pipe to the wall thickness and secure either with silicone or a no-pressure polyurethane foam. Do not use PU foam, as this expands until it is fully hardened and may deform the tube.
Clean inside of the pipe of dust and grease.
Wrap the THERMOBOX with the sealing tape provided and insert it by hand into the opening. Make sure that the axis of the THERMOBOX is exactly vertical.
Mount external blind and internal connection.