Installation / Operation Instruction Manual

7
Venting
Figure 1 - Vent Terminal Clearances
Canadian Installations
1
US
Installations
2
A=
Clearance above grade, veranda,
porch, deck or balcony
12 inches
(30 cm)
12 inches
(30 cm)
B=
Clearance to window or door that
may be opened
6 in (15cm) for appliances ≤10,000 Btuh
(3kW); 12 in (30 cm) for appliances
>10,000 Btuh (3kW) and ≤100,000 Btuh
(30kW); 36 in (91 cm) for appliances
>100,000 Btuh (30 kW)
4 feet (1.2 m)
below or to
the side of
opening; 12
inches (30
cm) above
opening
C=
Clearance to permanently closed
window
*b
*b
D=
Vertical clearance to ventilated soffit
located above the terminal within a
horizontal distance of 2 feet (.6 m)
from the center line of the terminal
*b
*b
E=
Clearance to unventilated soffit
*b
*b
F=
Clearance to outside corner
*b
*b
G=
Clearance to inside corner
*b
*b
H=
Clearance to each side of center line
extended above meter/regulator
assembly
3 feet (.9 m) within a height 15 feet (4.6 m)
above the meter/regulator assembly
*b
I=
Clearance to service regulator vent
outlet or oil tank vent
3 feet (.9 m)
*b
J=
Clearance to non-mechanical air
supply inlet to building or the
combustion air inlet to any other
appliance
6 in (15cm) for appliances ≤10,000 Btuh
(3kW); 12 in (30 cm) for appliances
>10,000 Btuh (3kW) and ≤100,000 Btuh
(30kW); 36 in (91 cm) for appliances
>100,000 Btuh (30 kW)
4 feet (1.2m)
below or to
side of
opening;
12 inches (30
cm) above
opening.
K=
Clearance to a mechanical air supply
inlet
6 feet
(1.83 m)
3 feet (91
cm) above if
within 10 feet
(3.1 m)
horizontally
L=
Clearance above paved sidewalk or
paved driveway located on public
property
7 feet
(2.13 m) †
7 feet
(2.13 m) †