Bosch SSB255 - Connecting Flue Gas Systems; Installation of the Exhaust and Air Intake System

SSB 6720818454 (2016/02) US
Installation | 25
4.7.2 Connecting ue gas systems
Optional vent systems are:
• Twin pipe, concentric pipe and 1 pipe using room air
• Approved materials PVC, CPVC, Stainless Steel, PP and PP-Flex
(M&G Duravent PolyPro and Centrotherm InnoFlue)
• Sealed combustion or room air intake
• Terminations can be either horizontal or vertical
• The diameters of the ue outlet and combustion air intake inlet are
designed to t standard PP, PVC, CPVC and stainless steel pipes.
The following table gives the diameter of the ue adapter on the
boiler.
Boiler SSB255 SSB399 SSB512
Diameters 3” - 80mm 4” - 100mm 4” - 100mm
Tab. 3
Insert the exhaust pipe and the air intake pipe as shown in the following
gure:
Fig. 26
Insert the ue exhaust pipe “A” completely into the adapter and tighten
the clamp “B” present in the ue exhaust adapter.
Insert the air intake pipe “C” completely into the adapter and tighten the
clamp “D” present in the air intake adapter.
The correct ow direction into two pipes is shown in Fig. 27.
Fig. 27
4.7.3 Installation of the exhaust and air intake system
NOTICE: Do not extend exposed vent pipe outside the
building beyond recommended distance of 39” or 1 meter.
Condensate could freeze and block vent pipe
Vent should terminate at least 3 feet (915 mm) away from adjacent walls,
inside corners and 5 feet (1525 mm) below roof overhang ( [X2], [X4], see
Fig. 28)
C
A
B
D