Weil-McLain CGI-4E Boiler User Manual


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Part Number 550-110-711/1108
17
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CGi-4E Gas-Fired Water Boiler — Boiler Manual
Follow instructions on this page
when determining vent location to
avoid possibility of severe personal
injury, death or substantial property
damage.
1. Locate the boiler and vent penetration through the
wall so all requirements on this page and in Fig-
ure 12 will be met. Also follow vent manufacturer’s
instructions.
2. Gaseswillformwhiteplumeinwinter.Plumecould
obstruct window view.
3. Prevailing winds could cause freezing of condensate
and water/ice buildup on vent termination, building,
plants or roof. Ice buildup on vent termination can
cause boiler shutdown and building freeze-up.
4. Winds over 40 mph can cause nuisance boiler shut-
down if boiler is sidewall vented. This could result
in loss of heat to building, causing freeze-up.
5. Locate or guard vent termination to prevent con-
densate from damaging exterior surfaces.
6. Locate the vent termination well away from trees,
shrubs, and decorative items.
7. Locate or guard vent to prevent accidental contact
by people or pets.
8. Donotterminateventinwindowwell,stairwell,
alcove, courtyard, or other recessed areas.
9. Donotwraporinsulateventpipeorttings.
10.Donotterminateventaboveanydoororwindow.
Condensatecanfreeze,causingiceformations.
11.Donotconnect:
• Anyotherappliancetoventpipe.
• Multipleboilerstoacommonventpipe.
Figure 12 Vent termination minimum clearances
12.Canadianinstallations—See B149.1or B149.2
Installation Code.Terminateventnoless than6
feet from another combustion air inlet, 3 feet from
any other building opening, and 3 feet from any gas
service regulator.
13.See
Figure 12, showing that the vent must termi-
nate:
• morethan4feetbelowortosideofalldoors
or windows.
• morethan1footabovegradeoranticipated
snow line.
• atleast7feetabovepublicwalkway.
• 3feetaboveanyforcedairintakewithin10
feet.
14.Ventmustalsoterminate:
• atleast6feetawayfromadjacentwalls.
• nocloserthan5feetbelowroofoverhang.
• atleast4feethorizontally(andinnocase
above or below unless a 4 foot horizontal
distance is maintained) from electric meters,
gas meters, regulators, relief valves, and other
equipment.
15.Siteconditionsmaydictategreaterclearances.
16.Donotextendexposedventpipeoutsideofbuilding.
Condensatecouldfreezeandblockventpipe.
A gas vent extending through an
exterior wall shall not terminate ad-
jacent to the wall or below building
extensions such as eaves, parapets,
balconies or decks. Failure to com-
ply could result in severe personal
injury, death or substantial property
damage.
Venting — direct exhaust — termination3e
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