Dunkirk Helix VLT Vertical Laser Tube, Wall Hung Modulating Condensing Boiler - Manual (Page 27)

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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)
Anticipated
Snow Line
6 - COMBUSTION AIR AND VENT PIPING
NOTICE
Configurations of single pipe vent with flue on the
sidewall, requires a tee as the vent terminal. See
figures 6-10 and 6-11.
Maintain 12"(305mm) US
(18"(457mm) Canada)
clearance above highest
anticipated snow level 24"
(610mm) above roof
Ground Level
12" (305mm)
Anticipated
Snow Line
Vent
Combustion
Air
Ground Level