19
Vent Termination
• 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
fl
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 the
fi
gure below. Any reduction
in these clearances could result in a disruption
of the air
fl
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 it will
not be covered by snowdrifts.
• Sidewall vent terminations within 7’ of grade require
a terminal guard.
Co-Axial Venting
V
G
A
Min. 72”
Max. 72”
Alcove detail
(open on one
side) Normal
ceiling/soffi t
clearances
apply.
KEY
VENT TERMINAL LOCATIONS - MINIMUM DISTANCES
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 sof
fi
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 sof
fi
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 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
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 fl oor
12
30
Note:
Local codes and regulations may require different clearances.
INSTALLATION
