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Your HOTBLAST 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 cer-
tified in accordance with nationally recog-
nized safety standards and equipped with the
required controls and other safety features
and which has been installed in accordance
with appropriate standards of the National
Fire Protection Association with installation
clearances specified in the furnace name-
plate marking. The installation must be ac-
complished by a qualified agency (one who is
engaged in, and is responsible for, or is thor-
oughly familiar with the installation and op-
eration of the gas, oil, and solid fuel burning
heating appliances, who is experienced in
such work, familiar with all the requirements of
the authority having jurisdiction.) The instal-
lation shall be in strict accordance with the
manufacturer's installation instructions fur-
nished with the solid fuel furnace.
The chimney connector of the furnace is
to be installed to provide clearances to com-
bustible 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 fur-
nace.
CENTRAL FURNACE INSTALLATION: As
a central furnace, the unit functions indepen-
dently of any other system. The blower will
come on when the plenum temperature
reaches the setting on the blower control.
PARALLEL INSTALLATION:
(See Optional Wiring Diagram, Page 13, Fig.
13) 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 temperature 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 HOTBLAST Fur-
nace, that it be fired as much as possible in
order to reduce the demand on your existing
central heating system. This unit has an op-
tional forced draft kit that operates from a wall
thermostat. When the temperature falls below
the setting on the wall thermostat, the forced
draft will come on (U.S. Stove Option 11/DIKL)
The warm air supply outlet of the
HOTBLAST Furnace shall not be connected
to the cold air return of the central furnace,
because the possibility exists of components
of the central furnace overheating and caus-
ing the central furnace to operate other than is
intended.
SERIES INSTALLATION:
This type of installation uses only the blowers
of the existing central furnace. The solid fuel
fan/limit control must also control the functions
of the existing furnace. All electrical power
must come from a single branch circuit (See
Fig. 14).
HOW THE FURNACE FUNCTIONS