28
FIGURE 6-10 Flue on Sidewall, Combustion Air on Roof
FIGURE 6-11 Flue on Sidewall, Inside Combustion Air
Combustion
Air
Vent
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.
FIGURE 6-12 Two Pipe Side Wall with 45° Vent
FIGURE 6-13 Side Wall Concentric Terminal w/Accelerator
NOTICE
If separation in Fig. 6-2 or Fig 6-12 is not large
enough to prevent cross flow contamination
between flue gas and fresh air use T-Terminal as
shown in Fig. 6-14. Use of T-Teminal for vent as
shown in Fig. 6-14 does not have a max. separation
requirement between flue gas and fresh air.
FIGURE 6-14 Side Wall Venting Terminal w/T-Terminal
Combustion
Air
Vent w/
Accelerator
1" (25.4mm) Max.
Separation
Vent w/T-
Termina
l
12" (305mm) Min.
Separation of Combustion Air and Vent
shall be maintained.
No Maximum separation is required
when using T-Terminal for vent.
See Snow & Ice
Page 29
See Snow & Ice
Page 29
Vent
45° Elbow
Upward
12" (205mm) Min.
24" (610mm) Max.
Separation
See Snow & Ice
Page 29
Combustion Air, 90°
Elbow Downward
12" (205mm) Min.
24" (610mm) Max.
Separation
Opening
Separation
24" Min.
Snow line
PN 240011342 Rev. E [05/31/2018]
Maintain 12"(305mm) US
(18"(457mm) Canada)
minimum clearance
above highest anticipated
snow level 24" (610mm)
maximum above roof
Ground Level
Vent
Combustion
Air
Ground Level
Snow line
Maintain
12"(305mm) US
(18"(457mm)
Canada) clearance
above highest
anticipated snow
line
Maintain
12"(305mm) US
(18"(457mm)
Canada) clearance
above highest
anticipated snow
line
