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3-90-08101R23_06/13
Requirements for Terminating the Venting
WARNING:Ventingterminalsmustnotberecessedintoa
wallorsiding.
NOTE:OnlyPLventpipewallpass-throughsandrestops
shouldbeusedwhenventingthroughcombustiblematerials.
NOTE:Always take into consideration the effect the
prevailingwind directionor other windcurrents will cause
withyashand/orsmokewhenplacingthetermination.
In addition, the following must be observed:
A. Theclearanceabovegrademustbeaminimumof18”.
B. Theclearancetoawindowordoorthatmaybeopened
must be a minimum of 48” to the side, 48” below the
window/door,and12”abovethewindow/door.
C.A 12” clearance to a permanently closed window is
recommendedtopreventcondensationonthewindow.
D.`Theverticalclearancetoaventilatedsoftlocatedabove
theterminalwithinahorizontaldistanceof2feet(60cm)
fromthecenter-lineoftheterminalmustbeaminimum
of18”.
E. Theclearancetoanunventilatedsoftmustbeaminimum
of12”.
F. Theclearancetoanoutsidecorneris11”fromcenterof
pipe.
G.Theclearancetoaninsidecorneris12”.
H.Aventmustnotbeinstalledwithin3feet(90cm)above
agasmeter/regulatorassemblywhenmeasuredfromthe
horizontalcenter-lineoftheregulator.
I. Theclearancetoserviceregulatorventoutletmustbea
minimumof6feet.
J. Theclearancetoanon-mechanicalairsupplyinlettothe
buildingorthecombustionairinlettoanyotherappliance
mustbeaminimumof48”.
K. Theclearancetoamechanicalairsupplyinletmustbea
minimumof10feet.
L. The clearance above a paved sidewalk or a paved
drivewaylocatedonpublicpropertymustbeaminimum
of7feet.
M.Theclearanceunderaveranda,porch,deckorbalcony
mustbeaminimumof12inches.
(see B also)
NOTE: The clearance to vegetation and other exterior
combustiblessuchasmulchis36”as measuredfromthe
centeroftheoutletorcap.This36”radiuscontinuestograde
oraminimumof7feetbelowtheoutlet.
CertainCanadianandorLocalcodesorregulationsmay
requiredifferentclearances.
A vent shall not terminate directly above a side-walk or
paveddrivewaywhichislocatedbetweentwosinglefamily
dwellingsandservesbothdwellings.
Onlypermitted ifveranda, porch, deck,or balcony isfully
openonaminimumof2sidesbeneaththeoor.
NOTE: Where passage through a wall, or partition of
combustible construction is desired, the installation
shall conform to CAN/CSA-B365. (if in Canada)
V
=Vent Terminal
A
=Air Supply Inlet
=Area where termination is mot permitted
Door
Sidewalk
Fixed
Closed
Openable
Openable
Fixed
Closed
Inside Corner
Detail
Porch or
Openable
Deck
or Fixed
Venting