Bosch Greenstar FS Series - 6.9.3 Vent and combustion pipe lengths

Installation
45
Greenstar FS/Combi FS – 6 720 810 590 (2020/04)
Fig. 39 Vertical venting system (sealed combustion)
[1] Intake
[2] Exhaust
X >12” (305mm)
Y 12” (305mm) above maximum snow level or at least 24”
(610mm) whichever is greater
The transitions from rigid to corrugated pipe must conform to the S636
standard - Plastic vent pipe for gas fired appliances
Fig. 40 PolyPro Flex Chimney Cap (PP) vertical venting system (sealed
combustion)
[1] Intake
[2] Exhaust
Fig. 41 Horizontal venting system (telescopic concentric vent kit)
2
6 720 810 590-26.1Wo
Y
X
1
Y
X
X
6 720 806 922-08.2O
1 2
5/8" per foot
(52 mm per metre)
6 720 810 590-27.1Wo