Maico WS 170 L, Manual, Page: 53 / 122

6. Installation
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UK
51
6.5.2 Insulating the ventilation channels
1. Insulate the channels (diffusion resistant)
from outside as far as the ventilation unit,
in order to avoid the build-up of
condensate on the outside of the outgoing
air and outside air channels.
2. The duct insulation must be carried out
according to the recognised rules of
technology.
3. Mask the joints well and decouple the wall
and roof outlets with strips of insulation.
4. Insulate the supply and exhaust air ducts
outside the thermal building envelope if
the ducts pass through a cold area.
Figure: WS 170 in left-hand version "L",
right-hand versions are mirrored