Rooftop Vent Termination - IBC EX Series Installation & Operating Manual

3.5.6 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 13
configurations
Rooftop vent terminal
25
3.5.6 Rooftop vent termination
Figure 14 Rooftop vent termination
with sidewall combustion air