31
OCTOBER / OCTOBRE 2015
Canadian installations1 US installations2
J Clearance to nonmechanical air
supply inlet to building or the
combustion air inlet to any other
appliance
12 in (30 cm) 9 in (23 cm)
K Clearance to a mechanical air
supply inlet
6 ft (1.83 m) 3 ft (91 cm) above if within 10 ft (3
m) horizontally
L Clearance above paved sidewalk or
paved driveway located on public
property
7 ft (2.13 m)† 7 ft (2.13 m)†
M Clearance under veranda, porch
deck, or balcony
12 in (30 cm)‡ 12 in (30 cm)‡
Notes:
1) In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code.
2) In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
* For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1.
“Clearance in accordance with local installation codes and the requirements of the gas supplier.”
† 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 veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
NOTE: Stûv is not responsible for warping, discoloration or damage to siding, soffit or any other surface of the house.
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