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Vitodens Rigid and Flex Venting Systems Installation
Direct Venting (Two-pipe System)
Component Parts of the PP(s) Venting System
Legend
A
Combustion air intake
B
Flue gas outlet
1
Boiler vent pipe adaptor
2
Double pipe adaptor
3
Air intake adaptor (PVC, CPVC, ABS)
4
PP(s) adaptor (WB2B 80, 105 and
B2HA 80, 88, 100, 112, 150 only with
M&G
system).
5
90º elbows
6
Combustion air intake straight pipe
7
Straight vent pipe
8
Pipe support system
9
Bird screen
qP
Wall strap with locking band at each joint,
as supplied by manufacturer.
For PP(s) systems, all exhaust vent and air intake piping
and elbows exposed outside, must be UV resistant
polypropylene (supplied by the vent manufacturer).
Vertical pipe system
Always include vent termination length in calculations.
IMPORTANT