Dunkirk Helix VX Vertical Laser Tube Wall Hung Stainless Steel Modulating Condensing Boiler - Manual (Page 28)

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FIGURE 6-10 Flue on Sidewall, Combustion Air on Roof
FIGURE 6-11 Flue on Sidewall, Inside Combustion Air
Combustion
Air
Vent
12" (305mm)
Minimum anticipated
snow line
6 - COMBUSTION AIR AND VENT PIPING
NOTICE
Configurations of single pipe vent with flue on
sidewall, requires tee as vent terminal. See figures
6-10 and 6-11.
Maintain 12"(305mm) US
(18"(457mm) Canada)
minimum clearance
above highest anticipated
snow level 24" (610mm)
maximum above roof
Ground Level
12" (305mm)
Minimum
anticipated snow
line
Vent
Combustion
Air
Ground Level