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Intrepid 1640 Woodburning Stove
30000830
Masonry Chimneys, cont'd.
• Unused openings in an existing masonry chimney
must be sealed with masonry to the thickness of the
chimney wall, and the chimney liner should be
repaired. Openings sealed with pie plates or wallpa-
per are a hazard and should be sealed with mortar or
refractory cement. In the event of a chimney fire,
flames and smoke may be forced out of these
unused thimbles.
• The chimney should be thoroughly cleaned before use.
• A newly-built masonry chimney must conform to the
standards of local building code, or, in the absence
of a local code, to a recognized national code.
Masonry chimneys must be lined, either with code-
approved masonry or precast refractory tiles, stain-
less steel pipe, or a code-approved, "poured-in-
place" liner. The chimney clean-out door must seal
tightly to ensure a good draft.
Prefabricated Chimneys
A prefabricated metal chimney must be one that is
tested and listed for use with solid-fuel burning appli-
ances to the High-Temperature (H.T.) Chimney Stan-
dard UL-103-1985 (2100°F.) for the United States, and
High Temperature (650°C) Standard ULC S-629 for
Canada.
Chimney Size
This stove is approved for venting into a masonry chim-
ney with a nominal flue size of 8" x 8" (203 x 203mm),
and into a round flue size of 8" (203mm) or 6" (152mm).
It may be vented into larger chimneys as well. How-
ever, chimneys with liners larger than 8" x 12" (203 x
305mm) may experience rapid cooling of smoke and
reduction in draft, especially if they are located outside
the home. Such large chimneys may need to be
insulated or have the flue relined for proper stove
performance.
Ask your dealer about components available for con-
necting the stove to a steel chimney liner.
Chimney Connector Guidelines
A chimney connector is the double-wall or single-wall
pipe that connects the stove to the chimney. The
chimney itself is a masonry or prefabricated structure
that encloses the flue. Chimney connectors are used
only to make the connection from the stove to the
chimney. They are for interior use only.
Double-wall connectors must be tested and listed for
use with solid-fuel burning appliances. Single-wall
connectors should be made of 24 gauge or heavier
steel, and should be 6" (152mm) in diameter. Do not
use galvanized chimney connector; it cannot withstand
the high temperatures that can be reached by smoke
and exhaust gases, and may release toxic fumes under
high heat.
If possible, do not pass
the chimney connector
through a combustible
wall or ceiling. If
passage through a
combustible wall is
unavoidable, refer to
the recommendations
in the section following
on Wall Pass-throughs.
Do not pass the
connector through an
attic, a closet or any
similar concealed
space. The whole
chimney connector should be exposed and accessible
for inspection and cleaning.
Install the single wall chimney connector not less than
18" (457mm) from the ceiling. Keep it as short and
direct as possible, with no more than two 90° turns. If
possible, use 45° elbows. Slope horizontal runs of
connectors upward 1/4" per foot (20 mm per meter)
going from the stove toward the chimney. The recom-
mended maximum length of a horizontal run is 3 feet (1
meter), and the total length of chimney connector
should be no longer than 8’ (2.4meters).
In cathedral ceiling installations, extend the prefabri-
cated chimney downward to within 8’ (2.4m) of the
stove.
SAFETY NOTE: ALWAYS WEAR GLOVES AND
PROTECTIVE EYEWEAR WHEN DRILLING,
CUTTING OR JOINING CHIMNEY CONNECTOR
SECTIONS .
Flue gas
direction
Toward
stove
Fig. 4. Chimney connector.
Do not connect this unit to a chimney flue
serving another appliance.
Note: Do not vent this stove into a factory-built
(zero-clearance) fireplace. This stove has not
been tested and listed for that type of installa-
tion. Factory-built fireplaces and their chim-
neys are specifically designed as a unit for use
as fireplaces. It may void the listing or be
hazardous to adapt them for any other use.
Do not connect the STOVE to any air distribu-
tion duct or system.