Vent Termination Clearances - Allied Air A95DF2V Installation Instructions Manual

D
E
B
L
A = Clearance above grade, veranda,
porch, deck or balcony
B = Clearance to window or
door that may be opened
C = Clearance to permanently
closed window
D = Vertical clearance to ventilated soffit
located above the terminal within a
horizontal distance of 2 feet (mm)
from the center line of the terminal
E = Clearance to unventilated soffit
F = Clearance to outside corner
G = Clearance to inside corner
H = Clearance to each side of center line ex-
tended above meter / regulator assembly
I = Clearance to service regulator
vent outlet
J = Clearance to non−mechanical air
supply inlet to building or the com-
bustion air inlet to any other ap-
K = Clearance to mechanical air sup-
L = Clearance above paved sidewalk or
paved driveway located on public property
M = Clearance under veranda, porch,
deck or balcony
1
In accordance with the current ANSI Z223.1/NFPA 54 Natural Fuel Gas Code
2
In accordance with the current CSA B149.1, Natura l Gas and Propane Installation Code
between two single family dwellings and serves both dwellings.
sides beneath the floor. Lennox recommends avoiding this location if possible.
Page 18 of 49

Vent Termination Clearances

For Direct Vent installations in the USA and Canada
C
Fixed
Closed
F
Operable
B
VENT TERMINAL
6 inches (152 mm) for appliances <10,000
3 feet (.9 m) within a height 15 feet (4.5 m)
6 inches (152 mm) for appliances <10,000
pliance
ply inlet
INSIDE CORNER
DETAIL
G
A
B
Operable
B
A
AIR SUPPLY INLET
1
US Installations
12 inches (305 mm) or 12 in. 305 mm)
above average snow accumulation.
Btuh (3kw), 9 inches (mm) for appliances
> 10,000 Btuh (3kw) and <50,000 Btuh
(15 kw), 12 inches (305 mm) for ap-
pliances > 50,000 Btuh (15kw)
* 12"
* Equal to or greater than soffit depth
* Equal to or greater than soffit depth
* No minimum to outside corner
*
above the meter / regulator assembly
* 3 feet (.9 m)
Btuh (3kw), 9 inches (mm) for appliances
> 10,000 Btuh (3kw) and <50,000 Btuh
(15 kw), 12 inches (305 mm) for ap-
pliances > 50,000 Btuh (15kw)
3 feet (.9 m) above if within 10 feet
(3 m) horizontally
* 7 feet (2.1m)
*For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, clear-
ance will be in accordance with local installation codes and the requirements
of the gas supplier and these installation instructions."
Figure 18
Issue 1130
H
B
I
Fixed
Closed
J
AREA WHERE TERMINAL
IS NOT PERMITTED
Canadian Installations
12 inches (305 mm) or 12 in. 305 mm)
above average snow accumulation.
6 inches (152 mm) for appliances <10,000
Btuh (3kw), 12 inches (305 mm) for
appliances > 10,000 Btuh (3kw) and
<100,000 Btuh (30kw), 36 inches (.9m)
for appliances > 100,000 Btuh (30kw)
* Equal to or greater than soffit depth * Equal to or greater than soffit depth
* Equal to or greater than soffit depth
* No minimum to outside corner
3 feet (.9 m) within a height 15 feet (4.5 m)
above the meter / regulator assembly
3 feet (.9 m)
6 inches (152 mm) for appliances <10,000
Btuh (3kw), 12 inches (305 mm) for
appliances > 10,000 Btuh (3kw) and
<100,000 Btuh (30kw), 36 inches (.9m)
for appliances > 100,000 Btuh (30kw)
6 feet (1.8 m)
M
K
2
* 12"
*
506788-01