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INSTALLATION APPLICATIONS
Illustration 1-b
Chimney Connector Systems and Clearances
from Combustible Walls for Residential Heating
Appliances
A
Minimum 3.5-in thick brick mansory all framed into
combustible wall with a minimum of 12-in brick
separation from clay liner to combustibles. The
fireclay liner shall run from outer surface of brick wall
to, but not beyond, the inner surface of chimney flue
liner and shall be firmly cemented in place.
B
Solid-insulated, listed factory-built chimney length of
the same inside diameter as the chimney connector
and having 1-in or more of insulation with a minimum
9-in. air space between the outer wall of the chimney
length and combustibles.
C
Sheet steel chimney connector, minimum 24 gauge
in thickness, with a ventilated thimble, minimum 24
gauge in thickness, having two 1-in. air channels,
separated from combustibles by a minimum of 6-in.
of glass fiber insulation.
Opening shall be covered, and thimble supported
with a sheet steel support, minimum 24 gauge in
thickness.
Solid insulated, listed factory-built chimney length
D
with an inside diameter 2-in. larger than the chimney
connector and having 1-in. or more of insulation,
serving as a pass-through for a single wall sheet steel
chimney connector of minimum 24 gauge thickness,
with a minimum 2-in. air space between the outer
wall of chimney section and combustibles. Minimum
length of chimney section shall be 12-in. chimney
section spaced 1-in. away from connector using sheet
steel support plates on both ends of chimney section.
Opening shall be covered, and chimney section
supported on both sides with sheet steel supports
securely fastened to wall surfaces of minimum 24
gauge thickness. Fasteners used to secure chimney
section shall not penetrate chimney flue liner.
6
Pre-Manufactured Flue System:
In the past few years pre-manufactured flue systems
have become very popular, because this type system
is easily installed and, when done correctly, is very
safe. There are many pre-manufactured flue systems
on the market, and when making your choice it should
be U.L., B.O.C.A. or I.C.B.O. approved. Any of these
systems are constructed of the proper materials and
meet the proper safety standards. Your local dealer
normally handles an approved brand of flue pipe.
There are two very popular methods for installation
of this type system.
The first, most popular and least expensive is through
the ceiling and out the roof. This is the most direct
route and creates a good draw because it requires
less pipe. It is less expensive because insulated pipe
is needed only from the ceiling to the roof and above
-- single wall chimney connect, 24 gauge or thicker
is used from the unit to the ceiling; maintain 10.5"
clearance between single wall chimney connector
and any combustibles.
The second method for installing a pre-manufactured
system is to exit through the wall and run the system
vertically up the outside of the structure. This method
is more expensive because more insulated pipe is
required -- you must use insulated pipe through the
wall and up the outside of the structure. In either
installation, proper clearances to combustibles should
be maintained. Your flue pipe manufacturer furnishes
a wall thimble or ceiling support box and, when
installed properly, the correct clearances are achieved.
If you are unable to install this type system your
local dealer may be able to recommend a qualified
contractor for this installation. It is the customer's
responsibility to ensure that his system is installed
properly and is in good operating condition.
FLOOR AND WALL
PROTECTION
1. Floor Protection
You will not need any floor protection if your floor is
constructed of a non-combustible material such as
brick or concrete. If your floor is constructed with a
combustible material such as hardwood, carpet or
linoleum, you must place protection between the
stove and the combustible material.
There are many floor and wall board manufacturers,
and you should be very cautious in choosing the
proper protection. The type board you choose should
be U.L. rated and listed. After examining the area you
plan to place your stove and determining it requires
a board, the next step is to select the proper size. The
stove you choose will determine the size board that
is required. The approved protector board should be
large enough to provide a minimum of eight inches
(8") behind the unit, eight inches (8") on either side
and sixteen inches (16") in the front where the door is
located. Floor protection should also exist under the
chimney connector, and should extend two inches (50
mm) beyond each side of the chimney connector.
The type of board you choose must have an R-value
of 0.84 or equivalent.
Illustration 2
Installation on a Concrete Floor
An appliance mounted on a concrete floor does not
require floor protection.
Carpeting and any other combustible material must
not cover the Floor Protector.
If a combustible surface is applied to the concrete
floor, a clearance must be maintained equivalent to
the area reserved for the floor protector.
7
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