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requirements for Terminating the venting
WARNING: Venting terminals must not be recessed into a
wall or siding.
NOTE: Only "pellet" vent pipe wall pass-throughs and fire
stops should be used when venting through combustible
materials.
NOTE: Always take into consideration the effect the
prevailing wind direction or other wind currents will cause
with flyash and/or smoke when placing the termination.
In addition, the following must be observed:
A. The clearance above grade must be a minimum of 12".
B. The clearance to a window or door that may be opened
must be a minimum of 48" to the side and 48" below the
window/door, and 12" above the window/door.
with outside air installed, the clearances are 18" to the
side and below and 9" above.
C. A 12" clearance to a permanently closed window is
recommended to prevent condensation on the window.
D. The vertical clearance to a ventilated soffit located above
the terminal within a horizontal distance of 2 feet (60 cm)
from the center-line of the terminal must be a minimum
of 18".
E. The clearance to an unventilated soffit must be a minimum
of 12".
F. The clearance to an outside corner is 11" from center of
pipe.
G. The clearance to an inside corner is 12".
Sidewalk
V
=Vent Terminal
19
venting
Inside Corner
Detail
Fixed
Closed
Openable
Fixed
Closed
Openable
A
=Air Supply Inlet
H. A vent must not be installed within 3 feet (90cm) above
a gas meter/regulator assembly when measured from the
horizontal center-line of the regulator.
I. The clearance to service regulator vent outlet must be a
minimum of 6 feet.
J. The clearance to a non-mechanical air supply inlet to the
building or the combustion air inlet to any other appliance
must be a minimum of 48".
K. The clearance to a mechanical air supply inlet must be a
minimum of 10 feet.
(with outside air installed, 6 feet )
L. The clearance above a paved sidewalk or a paved
driveway located on public property must be a minimum
of 7 feet.
M. The clearance under a veranda, porch, deck or balcony
must be a minimum of 12 inches. (b Also Applies)
NOTE: The clearance to vegetation and other exterior
combustibles such as mulch is 36" as measured from the
center of the outlet or cap. This 36" radius continues to grade
or a minimum of 7 feet below the outlet.
Certain Canadian and or Local codes or regulations may
require different clearances.
A vent shall not terminate directly above a side-walk or
paved driveway which is located between two single family
dwellings and serves both dwellings.
Only permitted if veranda, porch, deck, or balcony is fully
open on a minimum of 2 sides beneath the floor.
NOTE: where passage through a wall, or partition of
combustible construction is desired, the installation
shall conform to CAN/CSA-b365. (if in Canada)
=Area where termination is not permitted
Porch or
Deck
Openable
or Fixed
1-90-09730R29_02/14
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