Alternate Heating COAL GUN S1000, Installation And Operator'S Manual, Page: 12 / 64

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is very large, than a chimney that is protected
from outside temperature extremes.
The chimney must be sufficiently tall (at least
20 feet for masonry chimneys) and should
extend at least three feet above the highest part
of the roof to prevent downdrafts. The chimney
must be leak-free from the standpoint of air
entering through cracks or other chimney
defects or through loose stovepipe fittings.
If the chimney must go through a combustible
wall, be sure to use a metal thimble specially
designed for this purpose. The proper way to
install a thimble is to cut an oversize hole in the
sheetrock about 6 or 7 inches larger than the
thimble (refer to Figure 2). However, be sure to
follow the manufacturer’s directions that come
with the thimble. A metal ring shield is used to
cover the hole. This way air can circulate and
cool the area around the passageway.
Never decrease the cross-sectional area of the
stovepipe/chimney because the velocity of the
exhaust will increase thus increasing the
likelihood of particle discharge in the exhaust.
Technical Aspects
of Chimney Performance
A device called a manometer is used in
describing the technical performance of a
chimney. A manometer is an instrument used
for measuring the pressure of liquids and gases.
An analog manometer consists of a glass tube
filled with a liquid and mounted in front of a
measuring scale against which the liquid level
can be measured. If a manometer were
connected to a leak-free chimney with a leak-
free connection, then the draft in the chimney
should exert enough pressure (or pull) against
the water in the manometer to cause it to move
at least 0.04 inches in the tube.
A barometric damper or draft regulator must be
installed in the smoke pipe or flue connector
when installing the coal boiler. Manually
operated dampers must not be used! The draft
regulator should be adjusted to maintain a draft
of .04
″
to .06
″
during operation.
CAUTION:
SUFFOCATION HAZARD
The airflow through the
system and out the chimney
means that oxygen is leaving
the home and will create an
oxygen deficit if this air is
not replaced.
The airflow through the system and out the
chimney means that oxygen is leaving the home
and will create an oxygen deficit if this air is not
replaced. There is usually sufficient leakage in
older homes, but in well-insulated homes it may
be necessary to provide additional outside air
into the home.
STOVEPIPE
Use only 22-24 gauge single wall stove pipe in
open areas no closer than 18 inches from walls
or ceiling. If the stovepipe must be closer than
18 inches from the nearest wall or ceiling, or if
it must go through walls, closets, or boxed in
areas, then U.L. listed insulated stovepipe must
be used. Stovepipe that runs along the outside
walls of a building must also be U.L. listed
insulated pipe, even if it runs along a non-
combustible outside wall. This requirement is
in place in order to prevent cooling of the
stovepipe, which in turn cools the rising smoke
and causes creosote to form quickly (however,
this provision does not apply to the Coal Gun
because there is not sufficient gas generated in
the exhaust to cause creosote).
PROPER CHIMNEY CONNECTION
The boiler must be connected to a class ”A”
chimney (22 gauge preferred, stainless steel is
recommended).