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
Rooftop vent terminal
configurations
Figure 14
Rooftop vent termination
with sidewall combustion air
25
3.5.6 Rooftop vent termination
Summary of Contents for EX Series
Page 62: ...Intentionally left empty...
Page 80: ...Intentionally left empty...
Page 121: ...Appendices Wiring diagrams Figure 73 Controller electrical diagram 119 Appendices...
Page 122: ...Figure 74 Internal wiring diagram EX 400 and EX 500 models 120 Section Appendices...
Page 123: ...Figure 75 Internal wiring diagram EX 700 and EX 850 models 121 Wiring diagrams...
Page 124: ...Figure 76 Sequence of Operation 122 Section Appendices...
Page 126: ...Intentionally left empty...
Page 128: ...126 Boiler parts diagram EX 400 and EX 500...
