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Concentric Vent and Combustion-
Air Sidewall Termination
J jJ
1"Maximum
Exhaust
25-22-02d
Dimension "A" is touching or 2" maximum separation.
Sidewall Inlet Vent and Exhaust-
Air Termination
8"Min.
20'Max.
18" Min.for
Cold Climates
(Sustained Below0° F)
12"Min.Gradeor
Snow Level
_mension "A" is touching or 2" maximum separation.
Sidewall Inlet Vent and Exhaust-Air
Termination with Exterior Risers
18"Min.for Cold Climates
(SustainedBelow 0° F)
J
8"Min.
12" Min.
Grade or Snow
Inlet Level
Dimension "A" is touching or 2" maximum separation.
Rooftop Inlet Vent and Exhaust-
Air Termination
18"Min.for Cold Climates _
:) 8" Min. \
Inlet 20'Max.
12" Min.
Level
/
Exhaust
25-22-43
_e;i_271 Recommended Alternate
Installation for Sustained Cold
Weather (-O° F & below)
EXH_T
INLET
_J
12" MIN.Ground Level
-- _'_ ORSnow Level
FRONT VIEW
l Same Joist _
Space
12"
SIDE VIEW
12"
25-23-73
44001 1114O0 [_