Buderus Logamax plus GB162-L.B. 80 kW Installation Instructions Manual page 20

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Installation
Below are approved examples of vertical and horizontal venting
installation
NOTICE
▶ Place pipe supports every 5 ft. (1,525 mm) of
horizontal and vertical run, beginning with support
near boiler.
▶ The condensate must be drained in accordance with
the applicable rules ( § 6.5, page 16).
▶ Periodic cleaning of the vent terminal and air-intake
screens is mandatory.
▶ Avoid locating vent terminals near equipment or
construction which can be subject to degradation
from exhaust gases.
Fig. 25 Horizontal venting system (sealed combustion)
[1] exhaust 4" (100 mm)
[2] intake 4" (100 mm)
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6720645916-23.1TD
Fig. 26 Concentric horizontal venting system (sealed combustion)
[1] concentric adaptor 4" (100 mm) / 6" (150 mm)
[2] exhaust 4" (100 mm) / intake 6" (150 mm)
[3] place the air intake cap
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Fig. 27 Horizontal venting system (sealed combustion)
[1] exhaust 4" (100 mm)
[2] intake 4" (100 mm)
Logamax plus GB162-L.B. 80 kW / 100 kW – 6720645916 (2014/10)
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7746800103-05.1TD
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6 720 645 916-29.2TD