page no. 18 of 36
Vision Maxi
User Instructions Doc Ref M609 issue 1.0 June 2021.
Wall drilling for ducts
A
Side of the wall towards the interior
B
Side of the wall towards the exterior
1.
Perimeter wall
2.
Unit
3.
Return and expulsion grilles
4.
Outside air ducts
A
1
2
3
4
B
– position the paper template
Respect the distances indicated in chapter
"Installation
minimum distances"
.
– mark the positions of the holes for the ducts
– use a drill
– drill a pilot hole
– use a core drill
– drill the through hole into the wall
– keep a downward inclination toward the external side
The maximum length of the holes is 1 meter.
Curves are prohibited.
To prevent the creation of large quantities of dust and
debris in the room it is recommended to couple the core
drill to a vacuum system.
Proceed with caution in the vicinity of the outer wall in
order to avoid the breakage of plaster around the hole.
Take precautions so that the drilled material does not fall
on persons and objects below.
Positioning the ducts
A
Plastic sheet for ducts
A
– measure the depth of the holes drilled in the wall
– subtract 5 mm from the measurement
– cut the plastic sheets supplied to size
– roll the plastic sheet
– insert the rolled sheet into the hole
– position so that the edges of the sheet are 2 mm inside
both ends of the hole