4
W415-0682 / D / 02.06.12
INSTALLATIONS
CANADA
U.S.A.
A
12”
12”
Clearance above grade, veranda porch, deck or balcony.
B
12”
Δ
9”
Δ
Clearance to windows or doors that open.
C
12” *
12” *
Clearance to permanently closed windows.
D
18” **
18” **
Vertical clearance to ventilated sof
fi
ts located above the terminal within a horizontal distance of 2’ from
the center line of the terminal.
E
12” **
12” **
Clearance to unventilated sof
fi
t.
F
0”
0”
Clearance to an outside corner wall.
G
0”
0”
Clearance to an inside
non
-combustible corner wall or protruding
non
-combustible obstructions (chimney, etc.).
2”
2”
Clearance to an inside combustible corner wall or protruding combustible obstructions (vent chase, etc.).
H
3’
3’ ***
Clearance to each side of the center line extended above the meter / regulator assembly to a maximum
vertical distance of 15’.
I
3’
3’ ***
Clearance to a service regulator vent outlet.
J
12”
9”
Clearance to a non-mechanical air supply inlet to the building or a combustion air inlet to any other appliance.
K
6’
3’
Clearance to a mechanical air supply inlet.
L
7’ ‡
7’ ***
Clearance above a paved sidewalk or paved driveway located on public property.
M
12” ††
12” ***
Clearance under a veranda, porch or deck.
N
12”
12”
Clearance above the roof.
O
2’ †*
2’ †*
Clearance from an adjacent wall including neighbouring buildings.
P
8’
8’
Roof must be
non
-combustible without openings.
Q
3’
3’
See chart for wider wall dimensions.
R
6’
6’
See chart for deeper wall dimensions. The terminal shall not be installed on any wall that has an open-
ing between the terminal and the open side of the structure.
S
12”
12”
Clearance under a covered balcony
Δ
The terminal shall not be located less than 6 feet under a window that opens on a horizontal plane in a structure with three walls and a roof.
*
Recommended to prevent condensation on windows and thermal breakage
**
It is recommended to maximize the distance to vinyl clad sof
fi
ts.
***
This is a recommended distance. For additional requirements check local codes.
‡
A vent shall not terminate where it may cause hazardous frost or ice accumulations on adjacent property surfaces..
††
Permitted only if the veranda, porch, or deck is fully open on a minimum of two sides beneath the
fl
oor.
†*
Recommended to prevent recirculation of exhaust products. For additional requirements check local codes.
††*
Permitted only if the balcony is fully open on a minimum of one side.
12.2C
R
Q
S
G
P
COVERED BALCONY APPLICATIONS
††*
Q
MIN
R
MAX
MAX
R
= 3 feet
= 2 x
feet
Q
ACTUAL
1.2 VENT TERMINAL CLEARANCES
