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Your Supplemental Furnace is designed to be
a supplemental or central heating source for
your home. This solid fuel furnace may be
installed in conjunction with a properly operating
central furnace that is listed or certified in
accordance with nationally recognized safety
standards and equipped with the required
controls and other safety features and which has
been installed with appropriate standards of
National Fire Protection Association with
installation clearances specified in the furnace
nameplate marking. The installation must be
accomplished by a qualified agency (one who is
engaged in, and is responsible for, or is thor-
oughly familiar with the installation and operation
of the gas, oil, and solid fuel burning heating
appliances, who is experienced in such work,
familiar with all precautions required, and has
complied with all the requirements of the
authority having jurisdiction.) The installation
shall be in strict accordance with the
manufacturer's installation instructions furnished
with the solid fuel furnace.
The chimney connector of the furnace is to
be installed to provide clearances to combus-
tible material not less than specified in the
individual classifications and marked on the
furnace. The chimney connector must be
connected to a chimney suitable for use with
residential type or building heating appliances
which burn solid fuel.
The furnace is designed to operate in either
parallel or series air flow arrangement with the
central furnace or as a central furnace.
PARALLEL INSTALLATION: The design is such
that when the blower comes on,
the blower on the central system also comes on.
The blower will only come on when the tempera-
ture in the plenum has reached the setting on
the blower control. This is to insure that there is
sufficient warm air in the system to make it
efficient for the unit to operate. When the central
system thermostat calls for heat, the central
system will operate by the burner igniting and
the blower coming on. It is possible that both
systems will operate simultaneously. It is
recommended that for the most efficient use of
your Supplemental Furnace, that it be fired as
much as possible in order to reduce the demand
on your existing central heating system. This
unit has an optional motorized natural draft kit
that operates from a wall thermostat. When the
temperature falls below the setting on the wall
thermostat, the motorized natural draft will open
to increase heat.
The warm air supply outlet of the supplemen-
tary furnace shall not be connected to the cold
air return inlet of the central furnace because the
possibility exists of components of the central
furnace overheating and causing the central
furnace to operate other than is intended.
SERIES INSTALLATION: This type of installa-
tion uses only the blowers of the existing central
furnace. The solid fuel fan/limit control must
also control the functions of the existing fur-
nace. All electrical power must come from a
single branch circuit (see Fig. 15).
CENTRAL FURNACE INSTALLATION: As a
central furnace, the unit functions independently
of any other system. The blower will come on
when the plenum temperature reaches the
setting on the blower control.
HOW THE FURNACE FUNCTIONS
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