Guideline for extraction paths
Use round pipes with a 150 mm diameter or rectangular extraction chan-
nels with a cross section of 90 x 220 mm.
You should use the following schematic diagrams as a guide for the extracti-
on paths:
Extraction path through the walls
Here a telescope wall chock which can be adjusted to different wall thick-
nesses is built into the wall. The exhaust pipe should bend outwards slightly
so that the condensation water can flow away easily.
Extraction through the kitchen ceiling and roof
The height of the exhaust pipe must not exceed 2.5 m. The pipe must be
heat insulated or an air-trap seal must be installed.
Extraction into an existing exhaust shaft
The exhaust air must only be introduced into an existing exhaust shaft if
this is insulated against damp and is not already used for fuel purposes.
Have the chimney sweep responsible approve the use of the shaft.
Please note:
If the extraction channel is led through cold rooms, condensation may
form.
If the extraction channel has several bends, is very long or has a very
small diameter, the suction power can be considerably reduced. The mo-
tor may become loud and irregular.
The crucial factor is the correct transition of the exhaust channel into
the chimney:
WRONG!
Correct
Best solution
18
KD 934.1 / KD 634.1
