Publicité
Installation
Description
Clearance above grade, veranda,
A =
porch, deck, or balcony
Clearance to window or door that
B =
may be opened
Clearance to permanently closed
C =
window
Vertical clearance to ventilated
soffit located above the terminal
D =
within a horizontal distance of 2 ft
(61 cm)from the center line of the
terminal
E =
Clearance to unventilated soffit
F =
Clearance to outside corner
G =
Clearance to inside corner
Clearance to each side of cente*
H =
line extended above meter/
regulator assembly
Clearance to service regulator vent
I =
outlet
Clearance to nonmechanical air
supply inlet to building or the
J =
combustion air inlet to any other
appliance
Clearance to a mechanical air
K =
supply inlet
Clearance above paved sidewalk
L =
or paved driveway located on
public property
Clearance under veranda, porch
M =
deck, or balcony
[1] A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single
family dwellings and serves both dwellings.
[2] Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
20
Canadian installations
12 in (30 cm)
6 in (15 cm) for appliances ≤ 10,000
Btu/h (3 kW), 12 in (30 cm) for
appliances >10,000 Btu/h (3 kW) and ≤
100,000 Btu/h (30 kW), 36 in(91 cm) for
appliances >100,000 Btu/h (30 kW)
*
*
*
*
*
*
Above a regulator within 3 ft (91 cm)
horizontally of the vertical center line
of the regulator vent outlet to a
maximum vertical distance of 15 ft
(4.5m)
6 in (15 cm) for appliances ≤ 10,000
Btu/h (3 kW), 12 in (30 cm) for
appliances >10,000 Btuh (3 kW) and ≤
100,000 Btu/h (30 kW), 36 in (91 cm)
for appliances >100,000 Btu/h (30 kW)
6 ft (1.83 m)
7 ft (2.13m) [1]
12 in (30 cm) [2]
2
US installations
12 in (30 cm)
4 ft (1.2 m) below or to
side of opening; 1 ft
(300 mm) above
opening
*
*
*
*
*
*
*
4 ft (1.2 m) below or to
side of opening; 1 ft
(300 mm) above
opening
3 ft (91 cm) above if
within 10 ft (3 m)
horizontally
*
*
Publicité
