Two-Pipe Vertical Venting; Concentric Roof Venting - Bosch Singular 4000 Installation Instructions Manual

6.5.6 Two-Pipe Vertical Venting

Exhaust gas
12" (300 mm) min.
From any obstruction
(above, below, left,
or right)
Figure 43
WARNING:
 Maintain 12" (300 mm) min. (18" (450 mm) min. for
Canada) clearance above highest-anticipated snow level.
Maximum of 24" (600 mm) above roof.
NOTICE:
 Install a bird screen at the end of the intake air pipe and
exhaust pipe.
I ntake and exhaust pipes do not have to terminate in the same area.
Singular Combi Boiler - BTC 439003301 B (2021/07)
36" (900 mm) min.
Intake air

6.5.7 Concentric Roof Venting

Vent
Combustion air
Vent
Figure 44
Installation Instructions
Maintain 12" (300 mm) min.
Combustion air
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