17
Bell
fi res
Installation instructions
VENT INSTALLATION
Canadian Installations
1
US Installations
2
G=Clearance to inside
20 in (50.8 cm)
20 in (50.8 cm)
corner
H= Clearance to each inside 3 ft (91 cm) within a height 3 ft (91 cm) within a height
of center line extended
15 ft (4.5m) above the
15 ft (4.5m) above the
above meter/regulator
meter/regulator assembly
meter/regulator assembly
assembly
I = Clearance to service
3 ft (91 cm)
3 ft (91 cm)
regulator vent outlet
J= Clearance to non-
6 in (15 cm) for appliances 6 in (15 cm) for appliances
mechanical air supply
≤ 10,000 Btuh (3 kW), 12
≤ 10,000 Btuh (3 kW), 9 in
inlet to building or the
in (30 cm) for appliances > (23 cm) for appliances >
combustion air inlet to
10,000 Btuh (3 kW) and ≤
10,000 Btuh (3 kW) and ≤
any other appliance
100,000 Btuh (30 kW), 36
50,000 Btuh (15 kW), 12
in (91 cm) for appliances > in (30 cm) for appliances >
100,000 Btuh (30 kW)
50,000 Btuh (15 kW)
K= Clearance to a mechani- 6 ft (1.83 m)
3 ft (91 cm) above if within
cal air supply inlet
10 ft (3 m) horizontally
L= Clearance above paved 7 ft (2.13 m) †
7 ft (2.13 m) †
sidewalk or paved drive-
way located on public
property
M= Clearance under veranda, 20 in (51 cm) ‡
20 in (51 cm) ‡
porch, deck or balcony
1 In accordance with the current CSA-B149 Installation Codes.
2 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Codes.
† 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 fl oor.
NOTE: Local codes or regulations may require different clearances. Interfocos
assumes no responsibility for the improper performance of the appliance when
the venting system does not meet these requirements.
