Venting
Requirements for Terminating the
Venting
WARNING: Venting terminals must not be re- cessed into a wall or siding.
NOTE: Only PL vent pipe wall
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 ter- mination.
In addition, the following must be observed: A. The clearance above grade must be a mini-
mum of 18".1
B. The clearance to a window or door that may be opened must be a minimum of 48" to the side, 48" below the window/door, and 12" above the window/ door.1
( with outside air installed, 18” )
C. A 12" clearance to a permanently closed win- dow is recommended to prevent condensation on the window.
D. The vertical clearance to a ventilated soffit lo- cated above the terminal within a horizontal distance of 2 feet (60 cm) from the
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".
H.A vent must not be installed within 3 feet (90 cm) above a gas meter/regulator assembly when mea- sured from the horizontal
I. The clearance to service regulator vent outlet must be a minimum of 6 feet.1
J. The clearance to a
ply inlet to the building or the combustion air inlet to any other appliance must be a minimum of 48”.1
K. The clearance to a mechanical air supply inlet must be a minimum of 10 feet.1
(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.1,2
M. The clearance under a veranda, porch, deck or balcony must be a minimum of 12 inches.1,3
NOTE: The clearance to vegetation and other exterior combustibles such as mulch is 36” as mea- sured from the center of the outlet or cap. This 36”
radius continues to grade or a minimum of 7 feet below the outlet.
1Certain Canadian and or Local codes or regu- lations may require different clearances.
2A vent shall not terminate directly above a side- walk or paved driveway which is located between two single family dwellings and serves both dwell- ings.
3Only permitted if veranda, porch, deck, or bal- cony 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 conformto
I nsid e
Co rn er
De ta il
Fixed |
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Closed | Openable | Fixed |
Openable |
| Closed |
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V |
= Vent terminal
A = Air supply inlet | = Area where terminal is not permitted |
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