getAir SmartFan - Core-Drilling a Hole through the Wall

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EN SmartFan
5.1.2 Core-drilling a hole through the wall
Core-drill a hole in the outside wall using a 162 mm bit. The hole must have a gradient of
1–3°,allowinganycondensatetoowoutwards.Itisbesttodrilltheholefrominsideto
outside.
WHEN CORE DRILLING, PLEASE MAKE SURE THAT THERE IS ADEQUATE
PROTECTION FROM FALLING MASONRY ON THE OUTSIDE OF THE BUILDING,
ENSURING THAT NO PERSON OR MATERIAL WILL BE HARMED/DAMAGED.
Inside Outside
1 - 3°