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6.9.2
Approved examples of horizontal and vertical venting
installations
NOTICE:
▶ Place pipe supports every 5 feet (1525 mm) of horizontal and
vertical run, beginning with support near boiler.
▶ The condensate must be disposed of in accordance with applicable
rules.
▶ Periodic cleaning of the vent terminal and air-intake screens is
mandatory.
▶ Avoid locating vent terminals near equipment or building features
which can be subject to degradation from exhaust gases.
▶ If multiple boilers are installed in a row, allow at least 1 foot (305 mm)
clearance between the vent termination of one and the combustion
air intake of the other.
1
2
Fig. 32 Horizontal venting system (room air only)
2
1
Fig. 33 Horizontal venting system (room air only)
Key to fig. 32 and fig. 33:
[1]
Intake
[2]
Exhaust
Greenstar FS/Combi FS – 6 720 810 590 (2020/04)
Fig. 34 Horizontal venting system (sealed combustion)
2
6 720 810 590-19.1Wo
2
≥ 4"
(102 mm)
Fig. 35 Horizontal venting system (sealed combustion)
Key to fig. 34 and fig. 35:
6 720 810 590-20.1Wo
[1]
[2]
[3]
≥ 4"
(102 mm)
2
1
2
1
3
2
1
6 720 810 590 - 22.1Wo
Intake, behind exhaust
Exhaust
Wall termination
Installation
6 720 810 590-21.1Wo
43
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