OBO Bettermann EI30, Mounting Instructions, Page: 21 / 64

21 | EN Mounting instructions, PYROLINE
®
Con PLC fire protection duct
Mounting PYROLINE® Con D PLC on a wall/ceiling
7 3 2 90° external corner
1
K1
K2
A
A
A
Fig 11: 90° external corner duct trough mounting
1. Shorten the duct trough
K1
to the necessary dimension, so that they
end flush to the wall corner. Take the maximum 3 mm joint with the
sealing strip into account.
2. Stick the sealing strip
1
on the shortened front side.
3. Mount the duct trough
K1
flush with the wall corner.
4. Notch out the duct base of the duct trough
K2
, which is supposed to
continue at a 90° angle, by dimension A (inner height of duct walls).
5. Mount the duct trough
K2
in such a way that it ends flush with the
other duct trough
K1
.