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