Airflow 90001742 Installationshandbuch - Seite 3

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1.
To minimise cracking, drill a pilot hole and then core
drill from both sides into the cavity.
NOTE: Horizontal ducting, including ducting in walls should
be arranged to slope slightly downwards away from the
internal grille to prevent backflow of any moisture into the
property.
Use a 102mm dia. Core drill for Airflow 100mm Wallvent.
Use a 127mm dia. Core drill for Airflow 125mm Wallvent.
1.
Measure the wall thickness and cut the duct to length.
2.
The tube should be flush to the inside and outside
surfaces.
80001286 – Issue 1 01/23
Fig.1
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