32
Vent Termination
Horizontal Termination Clearance Diagram
Location Country
Minimum Clearance
Description
A
US &
Canada
12 inches
Clearance above grade, veranda, porch, deck, or balcony.
NOTE: On private property where termination is less than 7 feet above a sidewalk, driveway,
deck, porch, veranda, or balcony, use of a listed cap shield is suggested.
B
US
≤
50,000 BTU: 9 inches
> 50,000 BTU: 12 inches Clearance to an operable window or door.
NOTE: Zero clearance to an inoperable window or door.
Canada
12 inches
C
US &
Canada
24 inches
Vertical clearance to a
ventilated
soffit located above the vent termination.
18 inches
Vertical clearance to an
unventilated
soffit located above the vent termination.
42 inches
Vertical clearance to vinyl clad soffits and below electrical service.
D
US &
Canada
9 inches
Clearance to an outside corner.
E
US &
Canada
6 inches
Clearance to an inside corner.
F
US
N/A
Not to be installed above a gas meter/regulator assembly within 3 feet (90 cm) horizontally
from the center-line of the regulator.
Canada
3 feet
G
US &
Canada
3 feet
Clearance to gas service regulator vent outlet.
H
US
9 inches
Clearance to a non-mechanical air supply inlet to the building or the combustion air inlet to
any other appliance.
NOTE: Termination in a covered alcove space (spaces open only on one side and with an
overhang) are permitted with the dimensions specified for vinyl or non
-
vinyl siding and soffits.
1. There must be 3 feet minimum between termination caps. 2. All mechanical air intakes
within 10 feet of a termination cap must be a minimum of 3 feet below the termination cap.
3. All gravity air intakes within 3 feet of a termination cap must be a minimum of 1 foot below
the termination cap.
Canada
12 inches
I
US
3 feet
Clearance to a mechanical (powered) air supply inlet.
NOTE: Termination in a covered alcove space (spaces open only on one side and with an
overhang) are
permitted with the dimensions specified for vinyl or non
-
vinyl siding and soffits.
1. There must be 3 feet minimum between termination caps. 2. All mechanical air intakes
within 10 feet of a termination cap must be a minimum of 3 feet below the termination cap.
3. All gravity air intakes within 3 feet of a termination cap must be a minimum of 1 foot below
the termination cap.
Canada
6 feet
J*
US &
Canada
7 feet
Clearance above paved sidewalk or a paved driveway located on
public
property.
NOTE: On private property where termination is less than 7 feet above a sidewalk, driveway,
deck, porch, veranda, or balcony, use of a listed cap shield is suggested.
*a vent shall not terminate directly above a sidewalk or paved driveway which is located
between two single family dwellings and serves both dwellings.
K
US &
Canada
6 inches
Clearance from sides of electrical service.
NOTE: Location of the vent termination must not interfere with access to the electrical
service.
L
US &
Canada
12 inches
Clearance above electrical service.
NOTE: Location of the vent termination must not interfere with access to the electrical
service.
