Installation / Operation Instruction Manual

8
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 (61 cm)
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 (91 cm) 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
36 inches
(91 cm)
*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) †
M=
Clearance under a veranda, porch,
deck, or balcony
12 inches
(30 cm) ‡
*b