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Part Number 550-110-268/0699
3
StaR-34 Venting Supplement
Vent termination
Venting method definitions
Direct vent — Uses outside combustion air with combustion
air connector piping sealed at all joints and seams. Also known as
“sealed combustion”.
Non-Direct vent — Uses inside combustion air with no
combustion air connector piping.
Figure 1 Vent termination locations
26807
Snow
1 foot
1 ft
1 ft
1 ft
Properly locate vent termination
Follow instructions on this page when
determining vent location to avoid possibility
of severe personal injury, death or substantial
property damage.
1. When using direct vent method — Refer to separate
instructions packed with Weil-McLain direct vent termination
kit and vent pipe manufacturer's instructions for additional
locations.
2. For location of non-direct vent vertical termination, see vent
pipe manufacturer's instructions.
3. Gases will form white plume in winter. Plume could obstruct
window view.
4. Prevailing winds could cause freezing of condensate and
water/ice buildup on building, plants or roof.
5. Locate or guard vent to prevent accidental contact by people
or pets.
6. Do not terminate vent in window well, stairwell, alcove,
courtyard, or other recessed areas.
7. Non-Direct vent installations only — Vent must terminate
more than 1 foot below or to side of all doors or windows.
See
Figure 1.
8. Vent must terminate more than 1 foot above grade or
anticipated snow line. In addition, vent termination must be
at least 7 feet above public walkway and 3 feet above any forced
air intake within 10 feet. Stay well away from trees, shrubs,
and decorative items. Site conditions may dictate greater
clearances. See Figure 1.
9. Vent must terminate 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.
10. Locate or guard vent to prevent condensate from damaging
exterior finishes.
11. Do not extend exposed vent pipe outside of building.
Condensate could freeze and block vent pipe.
12. Vent must terminate at least 6 feet away from adjacent walls.
13. Do not terminate vent closer than 5 feet below roof overhang.
14. Do not terminate vent above any door or window. Condensate
can freeze, causing ice formations.
15. Do not use existing chimney as raceway if another appliance
or fireplace is vented into or through chimney.
16. Do not connect:
• Any other appliance to vent pipe.
• Multiple boilers to a common vent pipe.
17. Do not wrap or insulate vent pipe and fittings.
18. Canadian installations — See CAN/CGA B149.1 or B149.2
Installation Code.
19. 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.
26808
Forced
air intake
Public Walkway
3 feet
If within 10 feet
7 feet