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Figure 18
OUTSIDE CONNECTION
Figure 19
Aluminum Tape
Aluminum Tape
Fireplace
Connection
Plastic
Cover
Insulation
Flexible Pipe
Fireplace
5. All chimney installations must include at least one support. Re-
ducing the amount of chimney weight on the fireplace will help avoid
the noise created when the fireplace expands. This can be achieved
by having the chimney supported by the supports. The maximum
chimney length that can be supported by the fireplace is nine (9) feet
(2.75m)forS-2100+/HT6000+,twelve(12)feet(3.7m)forASHT+
/HT6103+and26feet(8m)forACchimney.
6. The chimney must extend at least three (3) feet (915 mm) above its point
of contact with the roof and at least two (2) feet (610 mm) higher than
any wall, roof or building within ten (10) feet (3m) of it (Figure 20).
7. If the chimney extends higher than five (5) feet (1,500 mm) above its point
of contact with the roof, it must be secured using a roof brace.
8. A rain cap must be installed on top of the chimney. Failure to install
a rain cap may cause corrosion problems.
9. Cut and frame square holes in all floors, ceilings, and roof that the
chimneywillgothroughtoprovidea2”(50mm)clearancebetween
thechimneyandanycombustiblematerials.Donotllthis2”space
with insulation or any other combustible material.
10. Portions of the chimney which may extend through accessible spaces
must be enclosed to avoid contact with combustible materials or
damage to the chimney.
11.When offsets are used, the pipe may not penetrate a ceiling or floor
unless it is running vertical (no 30° offsets).
Outside
Intake
Screw
Opening
Facing
Down
Wall
Aluminum Tape
Plastic Cover
Insulation
Flexible Pipe
Aluminum Tape
Note: 2" clearance to combustibles around chimney components re-
quired.
Note: Blown or fill type insulation materials must not be in contact with the
fireplace or in the enclosure frame as described in ‘’Enclosure’’ section.
Note: Local codes may not require firestopping at the ceiling levels for
outside chase installations. However, it is recommended for safety and
the reduction of heat loss.
THE CHIMNEY SYSTEM
Chimney Installation Notes
1. If possible, install an interior chimney as it will provide better perfor-
mance. In areas with continuous temperatures below -18° C (0° F),
the use of an exterior chimney increases the likelihood of operating
problems such as low draft, high rate of creosoting, and poor start-up
characteristics. Exterior chimneys are also prone to down-with dry and
flow reversal. Installations, which are located on lower floors in the
house, such as in a basement, in combination with outside chimney,
are especially prone to flow reversal.
2. The Lennox Hearth Products fireplace model MONTE may be installed
onlywithSecurityChimneysInternational6”diameterchimneysys-
tems.
3. A chimney venting a fireplace shall not vent any other appliance.
4. The minimum chimney height is twelve (12) feet (3.7 m). In altitude,
add18”(450mm)tothechimneyforevery2,000feet(600m)above
sea level.
Figure 20
two (2) feet Min.
three (3) feet Min.
ten (10) feet
12