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• Brick or modular block must be a minimum of 4” (10 cm)
nominal thickness. Stone construction must be at least
12” (30 cm) thick.
• A newly-built chimney must conform to local codes, or,
in their absence, must comply with national regulations.
• An existing chimney must be inspected by a professional
licensed chimney sweep, fire official, or code officer to
ensure that the chimney is in proper working order.
• No other appliance may be vented into the same flue.
• An airtight clean-out door should be located at the base
of the chimney.
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.
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. See figure 3.
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.
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.
Wall Pass-Throughs
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.
Common Method:
• See figures 4 and 5. 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 ½
inches thick (nominal 4” / 102 mm).
• Refractory mortar must be used at the junction of the
chimney and the pass-through liner. The pass-through
liner must not penetrate the chimney liner beyond the
inner surface of the chimney liner. Use extreme care
when constructing the hole in the chimney liner as the
tiles can shatter easily.
In Canada
The installation must conform to CAN/CSA-B365,
Installation Code for Solid Fuel Burning Appliances and
Equipment. Before proceeding be sure to consult your local
building inspector.
Common Method:
• This method requires the removal of all combustible
materials from at least 18” (45.7 cm) around the chimney
connector’s proposed location. A 6” round liner requires
a minimum opening 43” x 43” (109.2 x 109.2) square.
• Locate the pass-through at least 18” from combustible
ceiling materials.
• The space that is cleared of combustible materials must
remain empty. Sheet metal panels can be used to cover
the area. However, when using a panel on both sides of
the wall, each cover must be installed on
noncombustible spacers at least 1” from the wall. If one
panel of sheet metal is to be used it may be installed
flush to the wall.
See section
5.3.1 and 5.3.2 of CAN/CSA - B365-M91.
Consult
your local building inspector, authorized Jøtul Dealer, NFPA
211 in the U.S. or CAN/CSA-B635 in Canada for other
approved wall pass-through methods.
USA / Canada