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Terminal Clearances
TABLE 1: Minimum air terminal clearances (Canada / U.S.A)
G
INSTALLATIONS
CANADA
12" (30.5cm)
A
12" (30.5cm)
B
Δ
C
12" (30.5cm)*
D
SEE TABLE 2
E
F
G
0" (0mm)
H
SEE TABLE 2
I
3'(0.9m)
3' (0.9m)
J
K
12" (30.5cm)
L
6' (1.8m)
M
7' (2.1m) ‡
N
2' (0.6m)†*
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 use a heat shield and to maximize the distance to vinyl clad soffi ts.
***
The periscope requires a minimum 18 inches clearance from an inside corner.
****
This is a recommended distance. For additional requirements, check local codes.
†
3 feet above if within 10 feet horizontally.
‡
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.
note:
Clearances are to be in accordance with local installation codes and the requirements of the gas supplier. In their absence, clearances are to
be as listed above and are based on national codes.
For applications where the terminal is situated in an accessible location, a guard MUST be installed.
Wolf Steel Ltd., 24 Napoleon Rd., Barrie, ON L4M 0G8 Canada
C
I
I
A
J
B
U.S.A.
Clearance above grade, veranda porch, deck or balcony.
9" (229mm)
Clearance to windows or doors that open.
Δ
Clearance to permanently closed windows.
Vertical clearance to ventilated soffi ts located above the terminal within a horizontal distance of 2' (0.6m)
from the center line of the terminal.
Vertical clearance to unventilated soffi ts located above the terminal within a horizontal distance of 2'
(0.6m) from the center line of the terminal.
Maximum soffi t length (ventilated or unventilated).
Clearance to an outside corner wall.
Clearance to an inside combustible or non-combustible corner wall or protruding combustible or non-com-
bustible obstructions (chimney, vent chase, etc.).
Clearance to each side of the center line extended above the meter / regulator assembly to a maximum
3'(0.9m)****
vertical distance of 15' (4.6m).
3' (0.9m)****
Clearance to a service regulator vent outlet.
9" (229mm)
Clearance to a non-mechanical air supply inlet to the building or a combustion air inlet to any other appliance.
3' (0.9m) †
Clearance to a mechanical air supply inlet.
7' (2.1m) ****
Clearance above a paved sidewalk or paved driveway located on public property.
Clearance from an adjacent wall including neighbouring buildings.
D E
B
K
L
H
note:
Wall terminals are for illustration purposes only. Size and
shapes may vary.
N
M
1(866)820-8686
www.napoleon.com
W415-2868 / A / 10.07.20
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