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Concentric Vent and Combustion- -
Figure 26
Air Sidewall Termination
Combustion Air
Exhaust
Vent
Dimension "A" is touching or 2" maximum separation.
Sidewall Inlet Vent and Exhaust- -
Figure 27
Air Termination
Exhaust
"A"
Inlet
12" Min. Grade or
Snow Level
Dimension "A" is touching or 2" maximum separation.
Sidewall Inlet Vent and Exhaust- -Air
Figure 28
Termination with Exterior Risers
18" Min. for Cold Climates
(Sustained temperatures 0° F
and below for 24 or more con-
secutive hours)
8" Min.
20' Max.
Exhaust
"A"
Dimension "A" is touching or 2" maximum separation.
5. Concentric Termination
WARNING
!
CARBON MONOXIDE POISONING, FIRE AND
EXPLOSION HAZARD.
Failure to follow this warning could result in
personal injury, death and/or property damage.
Inlet and outlet pipes may NOT be vented directly
above each other (standard vent terminals).
30
1" Maximum
(TYP.)
Vent
"A"
25--22--02d
"A"
8" Min.
8" Min.
20' Max.
18" Min. for
Cold Climates
(Sustained temperatures 0° F
and below for 24 or more con-
secutive hours)
8" Min.
12" Min.
Grade or
Inlet
Snow Level
"A"
Specifications are subject to change without notice
Rooftop Inlet Vent and Exhaust- -
Figure 29
Air Termination
18" Min. for Cold Climates
(Sustained temperatures
0° F and below for 24 or
more consecutive hours)
Inlet
12" Min.
Grade or Snow
Level
Recommended Alternate Installation
Figure 30
for Sustained Cold Weather (
below for 24 or more consecutive hours
EXHAUST
12" MIN.
90°
FRONT VIEW
Same Joist
Space
Vent Termination Clearances
1.
Determine termination locations based on clearances
specified in following steps and as shown in Figure 8,
Figure 31 through Figure 36.
2.
The vent termination must be located at least 12" above
ground or normally expected snow accumulation levels.
8" Min.
20' Max.
Exhaust
25--22--43
- -0° F &
)
OVERHANG
INLET
12" MIN. Ground Level
OR Snow Level
SIDE VIEW
12"
25- 23- 73
440 01 1024 01
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