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7
W415-0689 / 06.25.08
G
G
J
I
K
A
C
D
E
F
H
B
B
INSTALLATIONS
CANADA U.S.A.
A 8 INCHES 8 INCHES Clearance above grade, veranda porch, deck or balcony.
B 12 INCHES 9 INCHES Clearance to windows or doors that open.
C 12 INCHES* 12 INCHES* Clearance to permanently closed windows.
D 18 INCHES** 18 INCHES** Vertical clearance to ventilated soffi t.
E 12 INCHES** 12 INCHES** Vertical clearance to an unventilated soffi t.
F 1 INCH 1 INCH
Clearance to an inside combustible corner wall or protruding
combustible obstructions. (vent chase, etc.)
G 3 FEET 3 FEET***
Clearance to each side of the centre line extended above the metre/
regulator assembly to a maximum vertical distance of 15 ft.
H 3 FEET 3 FEET*** Clearance to a service regulator vent outlet.
I 12 INCHES 9 INCHES
Clearance to a non-mechanical air supply inlet to the building or a
combustion air inlet to any other appliance.
J 6 FEET 3 FEET**** Clearance to a mechanical air supply inlet.
K 12 INCHES† 12 INCHES*** Clearance under a veranda, porch, deck or balcony.
* 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.
*** This is a recommended distance. For additional requirements check local codes.
**** Three feet above if within 10 feet horizontally.
† Permitted only if the veranda, porch, or deck is fully open on a minimum of two sides beneath the fl oor.
FIGURE 5