Lennox Hearth MODEL MONTAGE 32FS - Manual (Page 11)

11
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE
Vent Termination Locations
A = Clearance above grade, veranda, porch, deck, or balcony (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 center-
line 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 centerline of the regulator.
J = Clearance to service regulator vent outlet *(min. 72”/1.8m)
K = Clearance to non-mechanical air supply inlet to building or the
combustion air inlet to any other appliance *(min. 48”/1.2m)
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)
Note:
* Local codes or regulations may require different clearances.
** 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.
Vent Terminal
Area Where Terminal Is Not Permitted
(From Eave)
Vertical Terminal
Vertical Terminal
Fixed Closed
Able To Open
A
A
B
B
B
B
C
D
E
F
G
H
J
K
L M
N
24”
(610mm)
B
Air Supply Inlet
24”
(610mm)
Figure 9
E. The distance from the bottom of termination to grade is 12” (305 mm)
minimum. This is conditional upon plants and nature of grade surface: Be
careful to choose a location for the vent termination which does not expose
people or shrubs to high heat from the exhaust gases. The exhaust gases
are not hot enough to ignite grass, plants and shrubs located in the vicinity
of the termination although they should be a minimum of 3 feet (.92 m)
away. The grade surface under the termination must not be a lawn.
F. Since sparks may escape from the exhaust pipe of any stove, use
caution when positioning the vent pipe. Refer to pipe manufacturer’s
instructions when installing and terminating the exhaust. The vent pipe
should be horizontal and never run the pipe in a downward direction
(recommend a 1/4” [7 mm] rise per foot horizontal).
B. Not less than 4 feet (1.2 m) below, 4 feet (1.2 m) horizontally from or
1 foot (3.1 m) above any gravity air inlet (door, window, etc.) which
flue gases could reenter the dwelling.
C. Not less than 2 feet (.6 m) from combustible materials such as an
adjacent buildings, fences, protruding parts of the structure, roof
overhang, plants and shrubs, etc. and not less than 7 feet (2.1 m)
above grade when located adjacent to the public sidewalks (access).
The final termination of the exhaust system must be configured so that
flue gases do not jeopardize the safety of people passing by, overheat
combustible portions of nearby structures or enter the dwelling.
D. Not less than 3 feet (.92 m) below an eave (maximum overhang of 3
feet (.92 m) or any construction that projects more than 2” (51 mm)
from the plane of the wall.