7
INSTALLATION INSTRUCTIONS
AREA WHERE TERMINAL
IS NOT PERMITTED
OPER
ABLE
FIXED
CLOS
ED
OPER
ABLE
FIXED
CLOS
ED
AIR SUPPLY
INLET
INSIDE
CORN
ER
DETAIL
C
K
B
B
I
B
L
M
F
E
B
B
B
A
J
H
G
D
VENT
TERMINAL
NONMECHANICAL
AIR SUPPLY
MECHANICAL
AIR SUPPLY
Figure 4
*
Clearance in accordance with local installation codes and the requirements of the gas supplier.
For Canadian and US installations, the vent shall not terminate above a paved driveway that is located between two (2) single family dwellings and serves both dwellings.
** The veranda, porch, or deck is fully open on a minimum of two (2) sides beneath the floor.
*** Nine (9) inches (23 cm) for appliances with 10,000 to 50,000 Btu/hr inputs and twelve (12) inches (30 cm) for appliances greater than 50,000 Btu/hr.
**** The vent terminal must terminate at least three (3) feet (91 cm) above any forced air inlet duct located within ten (10) feet (3.05 m).
The Vent Termination must have a:
Canadian Installations
U.S. Installations
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.
12 inches (30 cm)
9 inches (23 cm) or
12 inches (30 cm) * * *
C
)
Clearance to outside corner.
*
*
D
)
Clearance to inside corner.
*
3 feet (91 cm)
E
)
Clearance to service regulator vent outlet.
3 feet (91 cm)
3 feet (91 cm)
F
)
Clearance to each side of center line extended
above meter/regulator assembly.
3 feet (91 cm) within a height of
15 feet (4.57 m) above the
meter/regulator assembly
3 feet (91 cm) within a height of
15 feet (4.57 m) above the
meter/regulator assembly
G
)
Clearance to non-mechanical air supply inlet to building
or the combustion air inlet to any other appliance.
12 inches (30 cm)
9 inches (23 cm) or
12 inches (30 cm) * * *
H
)
Clearance to a mechanical air supply inlet.
6 feet (1.82 m)
* * * *
I
)
Clearance above paved sidewalk or paved driveway
located on public property.
7 feet (2.13 m)
7 feet (2.13 m)
J
)
Clearance under veranda, porch, deck, or balcony.
12 inches (30 cm)**
12 inches (30 cm)**
K
)
Clearance to permanently closed window.
* *
L
)
Vertical clearance to ventilated soffit located above the
terminal within a horizontal distance of two (2) feet (61 cm)
from the centerline of the terminal.
*
*
M
) Clearance to unventilated soffit.
*
*
