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6
AIR TERMINAL INSTALLATIONS
FIGURE 2
INSTALLATIONS
CANADIAN
A
12 INCHES
B
12 INCHES
C
12 INCHES*
D
32 INCHES**
E
32 INCHES**
F
0 INCHES
0 INCHES***
G
2 INCHES***
H
3 FEET
I
3 FEET
J
12 INCHES
K
6 FEET
L
7 FEET‡
M
32 INCHES††
N
16 INCHES
O
2 FEET†*
*
Recommended to prevent condensation on windows and thermal breakage
**
Using a Napoleon soffit heat shield, W585-0096, or equivalent, the distance may be reduced to a minimum of
18". It is recommended to maximize the distance to vinyl clad soffits.
***
The periscope GD-401 requires a minimum 18 inches clearance from an inside corner.
**** This is a recommended distance. For additional requirements check local codes.
†
Three feet above if within 10 feet horizontally.
‡
A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family
dwellings and serves both dwellings.
††
Permitted only if the veranda, porch or deck is fully open on a minimum of two sides beneath the floor.
†*
Recommenced to prevent recirculation of exhaust products. For additional requirements check local codes.
W415-0381 / C / 05.13.04
U.S.A.
12 INCHES
Clearance above grade, veranda porch, deck or balcony.
9 INCHES
Clearance to windows or doors that open.
Clearance to permanently closed windows.
12 INCHES*
Vertical clearance to ventilated soffit located above the terminal within
32 INCHES**
a horizontal distance of 2 feet from the centerline of the terminal.
32 INCHES**
Clearance to unventilated soffit.
0 INCHES
Clearance to an outside corner wall.
Clearance to an inside non-combustible corner wall or protruding
0 INCHES***
non-combustible obstructions (chimney, etc.).
Clearance to an inside combustible corner wall or protruding com-
2 INCHES***
bustible obstructions ( vent chase, etc.).
Clearance to each side of the centerline extended above the meter
3 FEET****
/ regulator assembly to a maximum vertical distance of 15ft.
Clearance to a service regulator vent outlet.
3 FEET****
Clearance to a non-mechanical air supply inlet to the building or a
9 INCHES
combustion air inlet to any other appliance.
Clearance to a mechanical air supply inlet.
3 FEET†
Clearance above a paved sidewalk or paved driveway located on
7 FEET****
public property unless fitted with a heat shield kit GD-301.
Clearance under a veranda, porch, deck or balcony.
32 INCHES****
Clearance above the roof.
16 INCHES
Clearance from an adjacent wall including neighbouring buildings.
2 FEET†*
**
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