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© 2021 United States Stove Company
9
Many prefabricated replaces are of the “zero clearance
replace” category. These consist of multi layered metal
construction. They are designed with enough insulation
and/or air cooling on the base, back and sides so they can
be safely installed in direct contact with combustible oors
and walls. Although many prefabricated replaces carry
endorsements from nationally recognized organizations
for use as replaces, they have not been tested for
connection to coal stove heaters. Connecting a stove
to such a device will void the manufacturer’s warranty.
Venting a stove directly into a replace does not meet
code and should not be attempted. The stove warranty will
be void with such an installation. Do not create a hazard in
your home by connecting in this manner.
FIREPLACE INSTALLATION
Directly connecting the stove-pipe into the existing
masonry chimney (“Type A” Fireplace Conversion) of the
replace is the ONLY approved method of installation. If
the chimney is behind a combustible wall, you must use
an approved wall pass-through system to gain access to
the chimney. This is a complicated and involved process
and to ensure safety should only be done by a qualied
installer.
1. An entry hole must be cut through the masonry and
tile liner with minimal damage to the liner. At least
8” of liner must remain below the entry position.
When locating the stove and stove-pipe, all minimum
clearances must be observed from combustible
surfaces including mantels, combustible trim work,
ceilings and walls. Positioning the center of the stove
pipe entry into the chimney 24˝ below the ceiling
should ensure proper clearance for a 6˝ stove-pipe.
2. Install a re clay (5/8˝ minimum thickness) thimble.
Make sure the thimble is ush with the inner surface
of the chimney liner and does not protrude into the
ue.
3. Secure the thimble with refractory mortar. The thimble
should be surrounded by 12˝ of solid unit masonry
brickwork or 24˝ of stone.
4. Install the stove-pipe into the thimble as far as possible
without extending past the ue lining.
5. A small airspace (about 1/2˝) should remain between
the stove-pipe and thimble to allow for expansion of
the pipe. Seal this airspace with high temperature
caulking or ceramic wool.
6. Secure and seal the damper in the closed position
using high-temp caulking, ceramic wool, or furnace
cement. Also check to see if the chimney has a clean-
out. If it does, make sure it is closed and sealed as well.
A leaky clean-out will greatly reduce draft eciency.
STOVEPIPE CONNECTOR
SEALED AT THIMBLE
5/8” FIRECLAY
FLUE LINER
CHIMNEY
LINER EXTEND A
MINIMUM OF 8”
BELOW PIPE
CONNECTION
TO CHIMNEY
DAMPER
THROAT CLOSED
AND SEALED
HORIZONTAL 6” BLACK STOVEPIPE
(24 GA.) WITH 1/4”RISE PER FOOT
6” BLACK STOVEPIPE ELBOW
6” BLACK STOVEPIPE
USE HREE SHEET METAL
SCREWS PER JOINT
OF STOVEPIPE
LISTED FLOOR
PROTECTOR
COMBUSTIBLE WALL CHIMNEY CONNECTOR
PASS-THROUGHS
Method A. 12” (304.8 mm) Clearance to Combustible
Wall Member: Using a minimum thickness 3.5” (89 mm)
brick and a 5/8” (15.9 mm) minimum wall thickness clay
liner, construct a wall pass-through. The clay liner must
conform to ASTM C315 (Standard Specication for Clay
Fire Linings) or its equivalent. Keep a minimum of 12”
(304.8 mm) of brick masonry between the clay liner and
wall combustibles. The clay liner shall run from the brick
masonry outer surface to the inner surface of the chimney
ue liner but not past the inner surface. Firmly grout or
cement the clay liner in place to the chimney ue liner.
Method B. 9” (228.6 mm) Clearance to Combustible Wall
Member: Using a 6” (152.4 mm) inside diameter, listed,
factory-built Solid-Pak chimney section with insulation
of 1” (25.4 mm) or more, build a wall pass-through with a
minimum 9” (228.6 mm) air space between the outer wall
of the chimney length and wall combustibles. Use sheet
INSTALLATION
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