16
Save These Instructions
Vermont Castings • Aspen 1920 Owner's Manual_R32 • 08/17
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" (152 mm) 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"
(457 mm) from the ceiling.
Keep it as short and direct
as possible, with no more
than two 90 degree 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 recommended
maximum length of a horizontal run is 3' (914 mm), and the
total length of chimney connector should be no longer than
8' (2.5 meters).
In cathedral ceiling installations, extend the prefabricated
chimney downward to within 8 feet (2.4m) of the stove.
SAFETY NOTE: Always wear gloves and protective
eyewear when drilling, cutting or joining chimney
connector sections .
Double-wall Chimney Connectors:
The Aspen is approved for installation in the U.S. and Canada
with double-wall chimney connectors that have been tested
and listed for use with solid-fuel burning appliances by a
recognized testing laboratory.
Follow the instructions for assembling and installing double-
wall connectors provided by the manufacturer of the double-
wall chimney. To ease assembly and help assure safety, use
chimney components manufactured by a single source.
NOTE: For installations using double-wall connectors,
minimum clearances must conform to those listed in the
clearance chart in Section B -
Figure 4.2
.
ST242
Chimney connector
12/13/99 djt
Flue gas
direction
Toward
stove
Figure 5.3 -
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 installation. Factory-built
fireplaces and their chimneys 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 distribution duct
or system.
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 wallpaper 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, stainless 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 appliances to the
High-Temperature (H.T.) Chimney Standard 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 chimney
with a nominal flue size of 8" x 8" (203 x 203 mm), and into
a round flue size of 8" (203 mm) or 6" (152 mm).
It may be vented into larger chimneys as well. However,
chimneys with liners larger than 8" x 12" (203 x 305 mm)
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 connecting
the stove to a steel chimney liner.
