Rooftop Vent Termination - IBC SL Series Installation & Operating Manual

3.7.5 Rooftop vent termination

Warning
Condensate can cause corrosion of metal roofing components and other roofing
materials. Check with the builder or roofing contractor to ensure that materials are
resistant to acidic condensate. pH levels can be as low as 3.0.
a. Rooftop vents must terminate as follows:
The exhaust pipe can terminate in an open vertical orientation without concern
about rain infiltration; rain will drain away through the condensate trap.
Optional bird screen may be placed in a termination fitting. Leave unglued, and hold
in place with a short nipple. This permits easy access for cleaning.
Do not exhaust vent into a common venting system.
b. For rooftop direct vent systems:
Rooftop, two pipe, direct vent configurations, including typical clearance
requirements are shown below in the following images.
Figure 12
configurations
Rooftop vent terminal
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3.7.5 Rooftop vent termination
Figure 13 Rooftop vent termination with
sidewall combustion air