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4
Vent Information
A. Venting Termination Minimum Requirements
O
Figure 9.1
All minimum clearances are listed with an Outside Air Kit (OAK) installed, unless otherwise noted in table below.
A
12 in.
Above Finish Grade (the grade surface
must be a non-combustible material
B
48 in. no OAK
Open door or window: below or to the side
B
12 in.
Open door or window: above
C
6 in.
Permanently closed window: above, below
or to the side
D
36 in. no OAK
Vertical clearance to a ventilated soffi t
located above the terminal within a hori-
zontal distance of 2 ft from the center-line
of the terminal
E
12 in.
Clearance to unventilated soffi t
F
12 in.
Clearance to outside corner
G
12 in.
Clearance to inside corner
H
36 in.
Above gas meter/regulator measured from
horizontal center-line of regulator
I
36 in. USA
Clearance to service regulator vent outlet
72 in. Canada
J
48 in. no OAK
Clearance to non-mechanical air supply
inlet to the building or the combustions air
inlet to any other appliance
K
10 ft horizontal
Clearance to mechanical air supply
3 ft vertical
L
7 ft.
Above paved sidewalk, paved driveway
located on public property
M
12 in.
Under an open veranda, porch, deck or
balcony
N
See Note
Electric service: above, below or to the
below*
side (location must not obstruct or interfere
with access)
O
24 in.
Adjacent building, fences and protruding
parts of the structure
P
12 in.
Clearance above roof line for vertical
terminations
*NOTE: Consult local building, fi re offi cials or authorities having jurisdic-
tion. Local codes or regulations may require different clearances.
7/9/2104
D
E
L
C
B
V
FIXED
CLOSED
OPEN
F
V
B
V
Termination Cap
Inside Corner
G
V
A
FIXED
OPEN
CLOSED
V
B
V
A
B
G
Air Supply Inlet
X
Gas Meter
24 in.
Above grass, top of plants, wood or any other com-
bustible
36 in. no OAK
Clearance from any forced air intake of other appli-
ance
12 in.
Clearance horizontally from combustible wall
15 in.
Vented directly through a wall, minimum length of
horizontal pipe
6 in. horizontal
Minimum horizontal or vertical terminations must
12 in. vertical
protrude from wall
NOTICE:
Do NOT Terminate Vent:
• In any location that will allow fl ue gases or soot from en-
tering or staining the building
• In any location which could create a nuisance or hazard
• In any enclosed or semi-enclosed area such as a carport,
garage, attic, crawl space, under a sun deck or porch,
narrow walkway
• Closely fenced area, or any location that can build up
a concentration of fumes such as a stairwell, covered
breezeway, etc.
NOTICE:
Termination must exhaust above air inlet elevation.
•
It is recommended that at least 60 inches (1.52m) of vertical
pipe be installed when appliance is vented directly through a
wall. This will create a natural draft, which will help prevent
the possibility of smoke or odor venting into the home during
a power outage.
•
It will also keep exhaust from causing a nuisance or hazard
by exposing people or shrubs to high temperatures.
•
The safest and preferred venting method is to extend the vent
vertically through the roof or above the roof.
7021-154A
CASTILE FREESTANDING
V
N
N
N
Electrical
V
V
Service
N
V
H
P
G
M
I
V
X
J or K
Restricted Area
9
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