
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 8
Rooftop vent terminal configurations
Figure 9
Rooftop vent termination
with sidewall combustion air
30
Section: Installation
Содержание CX Series
Страница 6: ...Boiler part diagrams CX 150 CX 199 118 Installation Commissioning Report 122 6 Section Contents...
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Страница 13: ...Figure 2 Top and bottom view CX 150 CX 199 dimensions Figure 3 Front and side view CX 199 13 CX 199 dimensions...
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Страница 114: ...Appendices Wiring diagrams Figure 48 Controller electrical diagram 114 Section Troubleshooting...
Страница 115: ...Figure 49 Internal wiring diagram 115 Wiring diagrams...
Страница 116: ...Figure 50 Sequence of Operation 116 Section Troubleshooting...
Страница 117: ...8 4 Exploded views of the CX 150 CX 199 appliance 117 8 4 Exploded views of the CX 150 CX 199 appliance...
Страница 119: ...119 Boiler part diagrams CX 150 CX 199...