Harman TLC 2000 - AN APPROVED CANADIAN WALL PASS-THROUGH; AN APPROVED U.S. WALL PASS-THROUGH; The Chimney; The 3-foot, 2-foot, 10 foot rule

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The NFPA (National Fire Protection Association)
permits four methods for passing through a combustible
wall. A commonly used method to pass through a wall
directly to a masonry chimney is to clear a minimum
12"(300 mm) around the entire chimney connector, and
ll it with brick masonry which is at least 3.5"(90 mm)
thick. A reclay liner, minimum 3/8" (9 mm) wall thick-
ness must run through the brick wall to the chimney liner
(but not beyond the inner surface of the liner). It must be
cemented in place with refractory cement. This method
is illustrated. For details on the other three options,
refer to the most recent edition of the NFPA 211 code.
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The TLC 2000 must be installed into a chimney ap-
proved for use with solid-fuel appliances. In the U.S.,
the TLC 2000 must be connected to (1) a prefabricated
chimney complying with the requirements for Type HT
chimneys in the Standard for Chimneys, Factory-Built,
Residential Type and Building Heating Appliances, UL
103, or (2) a code-approved masonry chimney with
a ue liner. In Canada, the TLC 2000 is listed for use
with prefabricated chimneys tested and listed to the
high temperature (650 degrees C) chimney standard,
ULC S-629, or with a code approved masonry chimney.
The minimum recommended height for any chimney
is 16 ft (4.8 m) above ue collar height. A round ue
(either masonry or approved prefabricated), of either 6"
(150 mm), 7" (180 mm) or 8" (200 mm) may be used.
For square or rectangular masonry chimneys, nominal
sizes of 8" x 8"or 8"x 12" (200 mm x 200 mm, 200 mm
x 300 mm) may be used.
AN APPROVED CANADIAN
WALL PASS-THROUGH
Hole with a minimum
clearance of 18" (450 mm)
between connector and
wall.
Non-combustible cover,
one side only. If two
covers are used, each
must be mounted on
non-combustible spacers
at least 7/8" (21mm) away
from the wall.
1" (25mm)
Clearance
AN APPROVED U.S.
WALL PASS-THROUGH
Closest
Combustible
Material
Minimum 2" (50mm)
Clearance to Brick
Minimum 12"
(300mm) to Brick
Liner
Fire Clay
Thimble
Chimney
Connector
Chimney Flue
Masonry Chimney Built to
NFPA 211 Specications.
Minimum 12" (300mm)
to Combustibles
More Than 10 ft. (3m)
10 ft. (3m)
Ridge
Chimney
2 ft. (0.6m) min.
Height Necessary
Above Any Roof
Surface Within
10ft. (3m)
3ft. (0.9m)
minimum
above
exit
point
The 3-foot, 2-foot, 10 foot rule
Codes require that solid-fuel chimneys extend 3 ft
(0.9 m) above the point at which they exit from the roof,
provided that no part of any structure is within the top
of the chimney, then the chimney must extend 2 ft (6
m) above the highest point with the 10 ft (3 m) radius
top height. If there is not ten feet of clearance from the
top of the chimney, then the chimney must extend 2 ft
(6m) above the highest point with the 10 ft (3m) radius.
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