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2. Align the flat duct (6) horizontally or with a minimal gradient to the duct adapter (8) and fix the duct adapter (8) in
the long hole of the fixing clip (1) with suitable fixing material.
3. Press a flat duct gasket (5) blank into the duct connections of the direction-change adapter (3) and the duct adapter
(8).
Always start pressing in the profile gasket blank at the top of the duct connection so that the
surrounding flat duct gasket (5) closes at the top.
It may be necessary to loosen the duct adapter (8) fastening in order to make it easier to insert the round profile
gasket on the side facing the wall.
4. Then carry out the same installation steps for the upper flat duct (6).
5. Shorten the length of the four flat duct insulating elements (7) to dimension x of the visible area of the flat duct (6).
If you have selected installation variants 3 or 4, shorten the flat duct insulating elements (7) in pairs according to
the visible areas of the flat ducts (6).
6. First attach the inner U-channels of the flat duct insulation by pushing them in between the shell wall and the flat
duct (6) from above or below. Then clip the outer U-channels of the flat duct insulation onto the inner U-channels
using the tongue and groove system.
