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139262 Rev_H
9 / 11 / 2012
Common Method:
See fig. 78 Remove all combustible materials from the pass-
through area ( around the chimney connector), a minimum
12” (30.5 cm). A 6” (15.2 cm) diameter connector will require a
31” x 31” (78.7 x 78.7 cm) square opening.
The opening must be filled with at least 12” (30.5 cm) of
brick around a fireclay liner. The liner must be ASTM C35 or
equivalent, having a minimum wall thickness of 5/8” (16 mm).
The Pass-through must be at least 18” (45.7 cm) from
combustible ceiling materials.
It will be necessary to cut wall studs, install headers, and
construct a sill frame to maintain the proper dimensions
and to support the weight of the brick.
The bricks must be solid brick with a minimum of 3 inches
thick (nominal 4”/ 102 mm).
Figure 7.
Chimney Height
Requirement.
10’
305 cm
2’
61 cm
3’
91.5 cm
2.2 Prefabricated Chimneys
A prefabricated metal chimney must be tested and
listed for use with solid fuel burning appliances. High
Temperature (HT) Chimney Standard UL 103 for the U.S. and
High Temperature Standard ULC S-629 for Canada.
The manufacturer’s installation instructions must be
followed precisely. Always maintain the proper clearance to
combustibles as established by the pipe manufacturer. This
clearance is usually a minimum of 2”, although it may vary
by manufacturer or for certain chimney components.
2.3 Chimney Height
The chimney must be at least 3 feet (92 cm) higher than
the highest point where it passes through the roof and at
least 2 feet (61 cm) higher than the highest part of the roof
or structure that is within 10 feet (3.05 m) of the chimney,
measured horizontally.
Chimneys shorter than 14 feet (4.27 m) may not provide
adequate draft. Inadequate draft can result in smoke
spillage when loading the stove, or when the door is open.
Poor draft can also cause back puffing (ignition of gas
build-up inside the firebox) and sluggish performance.
The minimum height does not, in itself, guarantee proper
chimney performance. Optimum draft force should be in
the .05 - .10 in. w.c. range measured by a Magnahelic gauge.
Draft at .07 w.c. is ideal.
Excessive chimney height can promote over-strong draft
resulting in high stove temperatures and short burn times.
Excessive draft can be corrected by installing a butterfly
damper. Your Jøtul dealer is an expert resource to consult
regarding draft issues or other performance-related
questions.
2.4 Wall Pass-Throughs
Note: In addition to the methods described here, any listed,
prefabricated wall pass-through components available
from chimney manufacurers may be used.
In the U.S.
The National Fire Protection Association’s publication,
NFPA 211,
Standard for Chimneys, Fireplaces, Vents and Solid
Fuel Burning Appliances
permits four methods for passing
through a combustible wall. Before proceeding with any
method be sure to consult with your local building officials
to discuss any local code requirements.
2” clearance between wall
stud and chimney
Header
Pass-through
construction:
12” brick from
thimble to
chimney
Thimble: 5/8”
Fireclay Liner or
equivalent
Sill/Support
12”
30,5 cm
12”
30,5 cm
Flue Liner
Figure 8.
Masonry Wall Pass-through.
