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Part number 550-110-266/0601
3
GOLD GV Series 3 & 4 — Z-Vent II 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.
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 4 feet below or to side of all doors or windows.
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 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.
Figure 1 Vent termination locations
26607
Forced
air intake
Public Walkway
3 feet
If within 10 feet
7 feet
26608
Snow
1 foot
1 ft
1 ft
1 ft