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INSTALLATION
PAGE 11
HORIZONTAL VENT TERMINATION REQUIREMENTS
The venting terminals should not be recessed into a wall or siding.
A = 2” Clearances above grade, veranda, porch, deck or
balcony.
B = 12” Clearance to window or door that may be
opened.
C = 9” (USA) Clearance to permanently closed win-
dow.12” (CAN)
D = 24” Vertical clearance to ventilated soffit located
above the terminal within a horizontal distance of
2 feet (60 cm) from the center-line of the termi-
nal.
E = 12” Clearance to unventilated soffit.
F = 9” Clearance to outside corner.
G = 6” Clearance to inside corner.
H = 3 ft. (USA) Not to be installed above a me-
ter/regulator assembly within 3 feet (90 cm) hori-
zontally from the center-line of the regulator.
I = 3 ft. (USA) Clearance to service regulator vent out-
let.
6 ft. (CAN)
J = 9” (USA) Clearance to non-mechanical air supply
inlet to building or the combustion air inlet to 12“
(CAN) any other appliance.
K = 3 ft. (USA) Clearance to a mechanical air supply
inlet.
6 ft. (CAN)
L* = 7 ft. (USA) Clearance above paved side-walk or a
paved driveway located on public property.
M**= 12” Clearance under veranda, porch, deck or bal-
cony
* A vent shall not terminate directly above a side-walk
or paved driveway which is located between two sin-
gle 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: Local Codes or Regulations may require differ-
ent clearances.