Lennox Bella Installation And Operation Manual page 13

Vent Termination Locations
Air Supply Inlet
Vent Terminal
Area Where Terminal Is Not Permitted
(From Eave)
24"
(610mm)
D
E
M
A = Clearance above grade, veranda, porch, deck, or bal-
cony (min. 12"/30cm).
B = Clearance to window or door that may be opened (min.
12"/30cm above - 48"/1.2m below and to the side).
C = Clearance to permanently closed window *(min.
12"/30cm).
D = Vertical clearance to ventilated soffit located above
the terminal within a horizontal distance of *(min.
24"/60cm) from the centerline of the terminal (min.
22"/55cm) check with local code.
E = Clearance to unventilated soffit *(min. 12"/30cm).
F = Clearance to outside corner *(min. 12"/30cm).
G = Clearance to inside corner *(min. 12"/30cm).
H = Not to be installed above a meter/regulator assembly
within *(min. 36"/90cm) horizontally from the center-
line of the regulator.
J = Clearance to service regulator vent outlet *(min.
72"/1.8m).
K = Clearance to non-mechanical air supply inlet to build-
ing or the combustion air inlet to any other appliance
*(min. 48"/1.2m).
Figure 15
Vertical Terminal
H
B
F
J
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE
Vertical Terminal
G
A
Fixed Closed
B
C
K
A
B
Able To Open
L = Clearance to a mechanical air supply inlet *(min.
120"/3.1m).
M = **Clearance above paved sidewalk or a paved driveway
located on public property *(min. 84"/2.1m).
N = ***Clearance under veranda, porch, deck, or balcony
(min. 12"/30cm).
Notes:
* Local codes or regulations may require different clear-
ances.
** A vent shall not terminate directly above a sidewalk or
paved driveway which is located between two single
family dwellings and serves both dwellings.
*** Only permitted if veranda, porch, deck, or balcony is
fully open on a minimum of two sides beneath the
floor.
24"
(610mm)
B
N
L
B
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