33
Horizontal Vent Termination Location
• The vent terminal must be located on an outside
wall or through the roof.
• This direct vent appliance is designed to operate
when an undisturbed air
ȵ
ow hits the outside vent
terminal from any direction.
• The minimum clearances from this terminal that
must be maintained when located on an outside
wall are shown in
ȴ
gure below. Any reduction in
these clearances could result in a disruption of the
KEY VENT TERMINAL LOCATIONS - MINIMUM DISTANCES
Measured from the center of vent
MINIMUM
CLEARANCE
Inches
Cm
A
Clearance above grade, verandah, porch, deck or balcony
12
30
B
Clearance to window or door that may be opened
12
30
C
Clearance to permanently closed window (recommended to prevent condensation on window)
12
30
D
Vertical clearance to ventilated so
ɝ
t located above the terminal within a horizontal distance of 2 feet (60 cm)
from the center-line of the terminal
18
46
E
Clearance to unventilated so
ɝ
t
12
30
F
Clearance to outside corner
12
30
G
Clearance to inside corner
12
30
H
Horizontal clearance to center-line of meter/regulator assembly located within 15 feet (4.6
b
m) below the
terminal
36
90
I
Clearance to service regulator vent outlet
36
90
J
Clearance to non-mechanical air supply inlet to the building or the combustion air inlet to any other appliance
12
30
K
Clearance to a mechanical air supply inlet
72
180
L
Clearance above paved sidewalk or a paved driveway located on public property
Note:
A vent must not terminate directly above a sidewalk or paved driveway, which is located between two single-
family dwellings and serves both dwellings.
THIS DOES NOT APPLY to direct vent, non-consdensing appliances in
the Province of Ontario.
84
210
M
Clearance under a verandah, porch, deck or balcony
Only permitted if veranda, porch, deck or balcony is fully open on a minimum of 2 sides beneath the
ȵ
oor
12
30
Note:
Local codes and regulations may require di
erent clearances.
V
G
A
Min. 72”
Max. 72”
Alcove detail
(open on one
side) Normal
ceiling/so
ɝ
t
clearances
apply.
air
ȵ
ow or a safety hazard. Local codes or regulations
may require greater clearances.
• The vent terminal must not be recessed into a wall
or siding.
• The vent terminal should be positioned where any
snowdrifts will not cover it.
• Sidewall vent terminations require a terminal guard
such as 658TG or 845TG when accessible—within 7’
of ground.
Horizontal Vent Termination Location
Venting
Co-axial
