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Installation instructions
Greentherm T9800 SE 160/199 – 6 720 816 815 (2022/01)
28
4.6.4 Recommended Vent Configuration Examples
Below are approved examples of vertical and horizontal venting
installations.
NOTICE:
Using a single pipe vent in cold climates puts the water heater
at risk of freezing, as negative air pressure is common in
buildings during cold weather. This situation will pull cold air
through the heat exchanger and can lead to damage and a water
leak and is not covered by the product's warranty. In the event
of negative air pressure causing back drafting contact Bosch for
information.
Fig. 12 Horizontal venting system (concentric vent)
[1] Exhaust
[2] Air intake
[3] Concentric Vent kit
[4] Exhaust pipe
[5] Air Intake pipe
[LA] Minimum 1"
Fig. 13 Vertical venting system
[1] Exhaust
[2] Intake
[A] 12 inches (305 mm) (18 in. for Canada) above maximum
snow level or at least 24 inches (610 mm), whichever is
greater.
[B] 12 inches (305 mm)
[C] 12 inches (305 mm) minimum above air intake opening
Fig. 14 Horizontal parallel venting system (twin pipe)
[A] 3ft minimum
Vent terminals are at the same height.
6720816815-37.1V
A
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