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3.0 Connection to the
Chimney
Masonry Chimneys
When connecting to a masonry chimney, the chimney
connector must slide completely inside the chimney
thimble (or breach) to the inner surface of flue liner, make
sure the connector does not protrude past the inside of
the flue liner as that will reduce the flow area available
for the smoke and ultimately cause problems with your
chimney system. The chimney connector should be sealed
into the thimble with refractory cement and the connector
should also be mechanically fastened to the chimney.
See fig. 6, page 23.
Prefabricated Chimneys
Always follow the chimney manufacturer's instructions
and use all the components required by the manufacturer.
Do not take shortcuts or use make shift methods for
securing the chimney connector to the chimney.
Note: The clearances expressed in inches are those
approved for installations in the United States. The
clearances in parentheses that are expressed in centimeters
are those approved for installations in Canada. Different
test standards for the respective countries may result in
differences in the clearance requirements.
6
4.0 Clearances to
Combustibles
4.1 Floor Protection
A bottom heat shield is required in all installations.In
addition, the stove must be placed on a non-combustible
surface that extends 8" beyond the sides and back of the
stove. In the U.S., protection must extend 16" from the
front of the stove. In Canada, it must extend 18" from the
stove front. Floor protection must also be used under the
stove pipe and must extend 2" beyond either side of the
pipe (fig. 7, page 23).
The floor protection must have a minimum R value of .47.
Warning! Never put any type of floor protection on top
of carpeting.
4.2 Alternate Floor Protection
All floor protection materials must be non-combustible
(i.e., metals, brick, stone, mineral fiber boards, etc.). Any
organic materials (i.e., plastics, wood, paper products, etc.)
are combustible and must not be used. The floor protector
specified may include some form of thermal designation
such as R-value (thermal resistance), k-factor (thermal
conductivity), or C-factor (thermal conductance).
The easiest means of determining if a proposed alternate
floor material meets requirements listed in the appliance
manual is to follow the procedure: See page 27.
4.3 Clearance to Adjacent Combustible
Materials
The diagrams in figures 8-9-10 - page 23, give the
required clearances you must maintain from unprotected
combustible materials or objects.
A combustible is anything that can burn, and in the case
of stove installations, these combustibles may not be
visible. lf you are not sure of the combustible nature of any
material in the vicinity of your planned stove installation,
you should check with your local fire off icials. Remember
that "fire resistant" materials are considered combustible;
they are difficult to ignite, but they will burn.
lf you have recently purchased a home that has a stove
hearth in it that you plan to use, it is extremely important
that the entire system be examined for safety. Many older
homes may have faulty chimneys, or previous owners may
have covered combustible walls or studs with brick veneers.
Heat is conducted readily through brick and could ignite
unseen combustibles behind it.
Contact local building or fire official about restrictions and
installation requirements in your area.
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