Dunkirk DMG-240 Installation, Operation & Maintenance Manual page 28

FIGURE 6-12 Flue on Roof, Indoor Combustion Air
Maintain 12"(305mm) US
(18"(457mm) Canada)
minimum clearance
above highest anticipated
snow level maximum 24"
(610mm) above roof
24" (610mm)
* Minimum Length
FIGURE 6-13 Flue on Sidewall, Inside Combustion Air
18" Vertical
Clearance to
ventilated soffit
Vent
Maintain
12"(305mm) US
(18"(457mm)
Canada) clearance
above highest
anticipated snow
line
Snow line
Ground Level
6 - COMBUSTION AIR AND VENT PIPING
Vent
Combustion
Air
(Combustion
Air - Outer
Ring)
Combustion air and Vent Piping Length Page 23.
Combustion air and Vent Piping Length Page 22.
Configurations of single pipe vent with flue on
sidewall, requires tee as vent terminal. See figures
6-21 and 6-23.
28
NOTICE
P/N 240011656, Rev. E [07/30/2018]