Viessmann Flue gas system Installation Instructions Manual page 16

Routing through a duct (cont.)
Installation
1. Drill a ø 12 mm hole centrally into the
rear duct wall to secure support rail
2. Insert support rail
and secure with screws or mortar on the
front duct wall.
3. Position support bend
the pin in a hole in the support rail.
4. Secure installation rope
the lowest vertical pipe section.
1
into the drilled hole,
1
and secure with
2
externally on
3
.
15