Vent And Combustion Air Pipe Lengths - Bosch Greenstar combi 100 p Installation And Service Instructions For Contractors

30 | Notes on installation and operation
X
Y
1
Fig. 32 Vertical venting system (sealed combustion)
[1] Intake
[2] Exhaust
X Greater than 12 inches (305 mm)
Y Greater than 12 inches (305 mm)
1 2
Fig. 33 PolyPro Flex chimney cap (PP) flue gas routing (sealed
combustion)
[1] Intake
[2] Exhaust
6720872361 (2017/04)
X
2
6 720 641 933-08.1O
0010004964-001
X
Y
Fig. 34 Horizontal venting system (telescopic concentric vent kit)
6.7.3

Vent and combustion air pipe lengths

With Flex Pipe the maximum length is reduced by 50%.
3" (76 mm) Vent and combustion air pipe
For all installation situations and for all appliances the maximum vent
and combustion air pipe length is 100 feet each, with no more than
8 elbows each.
1/4" per foot
(50 mm per meter)
6 720 641 933-78.1O
Greenstar combi 100 p / 151 p