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Vermont Castings Madison
30001453
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. Ma-
sonry chimneys must be lined, either with code-ap-
proved 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 test-
ed 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 Madison is approved for venting into a masonry
chimney 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, however, 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 relined for proper stove performance.
Chimney Connector Guidelines
A chimney connector is the double-wall or single-wall
pipe that connects the stove to the chimney. The chim-
ney 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 con-
nectors should be made of 24 gauge or heavier steel,
and should be 6” (150mm) 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 recommen-
dations in the sec-
tion following on Wall
Pass-throughs. Do
not pass the connec-
tor through an attic, a
closet or any similar
concealed space. The
whole chimney con-
nector should be ex-
posed and accessible
for inspection and cleaning.
Install the single wall chimney connector not less than
23” (585mm) from the ceiling. Keep it as short and
direct as possible, with no more than two 90 degree
turns. If possible, use 45 degree elbows. Slope horizon-
tal runs of connectors upward 1/4” per foot (20mm per
meter) going from the stove toward the chimney. The
recommended maximum length of a horizontal run is 3
feet (1 meter), and the total length of chimney connec-
tor should be no longer than 8’ (2.5m).
In cathedral ceiling installations, extend the prefabricat-
ed chimney downward to within 8’ (2.5m) of the stove.
SAFETY NOTE: ALWAYS WEAR GLOVES AND PRO
-
TECTIVE EYEWEAR WHEN DRILLING, CUTTING OR
JOINING CHIMNEY CONNECTOR SECTIONS .
ST242
Chimney connector
12/13/99 djt
Flue gas
direction
Toward
stove
Fig. 4 Chimney connector.
ST242
DO NOT CONNECT THIS UNIT TO A CHIMNEY
FLUE SERVING ANOTHER APPLIANCE.
NOTE: DO NOT VENT THIS STOVE INTO A FAC
-
TORY-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.