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3 Cut the duct pipes
NOTICE
Make sure if you cut the duct pipes, the part you want to keep has a lip.
To cut the duct pipes, do the following:
1.
Remove the EPP covers.
2.
Cut the upper duct pipe (input fresh air) to the total width of the
wall (D1) + 15 mm.
Tip: Use a wide tape or two paper sheets taped together to mark the duct pipes and get a
perpendicular cut.
3.
Cut the lower duct pipe (output stale air) to the total width of the
wall(s) (D1) + 55 mm.
4.
Deburr the duct pipes. Use a deburring tool, such as a file.
D1
fig. 7
Determine D1
10
fig. 8
Make the duct pipes to the correct size
D1 + 15 mm
D1 + 55 mm
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