Weil-McLain GOLD CGt Manual page 17

GOLD CGt Gas-Fired Water Boiler — Boiler Manual
3e
Venting — direct exhaust — vent termination
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 Figure
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 freezeup.
4. Winds over 40 mph can cause nuisance boiler
shutdown if boiler is sidewall vented. This could
result in loss of heat to building, causing freezeup.
5. Locate or guard vent termination to prevent
condensate 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 fittings.
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
Part Number 550-110-290/0501
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 , showing that the vent must terminate:
Figure 12
• 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
adjacent to the wall or below
building extensions such as eaves,
parapets, balconies or decks. Failure
to comply could result in severe
personal injury, death or substantial
property damage.
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