United States Stove Company Hot Blast HB1520 Owner’s Instruction And Operation Manual page 17

OPERATION
your stoves efficiency and leads to accelerated
creosote buildup in your chimney. Be considerate of the
environment and only burn dry wood.
CAUTION:
DO NOT LEAVE APPLIANCE UNATTENDED WITH
THE DOOR OPEN.
WARNINGS:
• NEVER OVERFIRE YOUR STOVE. IF ANY PART
OF THE STOVE STARTS TO GLOW RED, OVER
FIRING IS HAPPENING. READJUST THE AIR
INTAKE CONTROL AT A LOWER SETTING.
• THE INSTALLATION OF A LOG CRADLE OR
GRATES IS NOT RECOMMENDED IN YOUR WOOD
STOVE. BUILD FIRE DIRECTLY ON FIREBRICK.
• NEVER PUT WOOD ABOVE THE FIREBRICK
LINING OF THE FIREBOX.
• ATTEMPTS TO
RATES THAT EXCEED
SPECIFICATIONS CAN RESULT IN PERMANENT
DAMAGE TO THE FURNACE.
GENERAL FURNACE OPERATION
Honeywell Limit Control
This device, mounted in the ductwork, just above the air
discharge atop the furnace, works in conjunction with
a wall thermostat, operating the distribution blowers
and the combustion fan on the rear of the furnace. The
factory settings are 100/150/200. The wall thermostat
setting operates the ON time of the combustion fan. If the
temperature is below the setting on the wall thermostat,
the combustion fan will come ON. (Recommended
setting at 5 to 10 degrees higher than other heating
thermostats.) The first two set points on the limit control
operates the distribution blowers. When the furnace
plenum temperature reaches the second set point on the
limit control, the distribution blowers will come on. If the
temperature falls to the first set point, the distribution
blower will shut-off. When the furnace reaches the
third set point on the limit control, the combustion fan
will shut-off. Once the temperature falls below that set
point and the wall thermostat is still calling for heat, the
combustion fan will turn back ON. The 200° is a Factory
Preset Limit for the combustion fan and should never
be changed. Doing so could result in excessive firebox
temperatures and could permanently damage your
firebox.
ACHIEVE HEAT OUTPUT
FURNACE DESIGN
FURNACE LOADING PROCEDURE
Starting your Furnace
• When lighting the furnace, the wall thermostat should
be set to its MAX setting so that the combustion fan is
ON. Start the fire with approximately 12 lbs. of kindling,
which will be several small strips of wood, 1-1/2 to
2-1/2 inches wide, approximately 12 to 15 inches deep
in the bottom of the firebox. Leave the fuel loading door
slightly open to ensure good ignition of the kindling.
Make sure the combustion fan is ON and its damper is
closed, then pull the knob/loop on the front of the unit
to prop open the barometric dampers.
• Once the kindling is fully ignited, add another 12 to 15
lbs. of kindling, which will be around the same amount
as the initial load.
• Leave the door slightly open for three to five minutes
(3-5 min) to ensure full ignition of the second kindling
load.
• After the second load of kindling is fully ignited, you
can close the door and push the knob/loop on the front
of the unit back in to allow the barometric dampers to
function freely. After 15 minutes, fully open the damper
on the combustion fan.
• Once the kindling burns down to about 8 lbs., which
should be to the point that the kindling will break up
into a full bed of coals, the preload can be added into
the firebox. The preload should consist of around 40
pounds of properly seasoned cord wood, which should
be about 6 to 8 pieces of wood.
• After loading the preload, close the door, and make
certain the combustion fan is ON.
• Allow about one hour (1hr) for the preload to burn down
to around 10-12 lbs. or when all the preload wood will
break up into coals. You should now have a coal bed
that is several inches deep in the bottom of the firebox.
• The purpose of the preload burn is to establish a proper
coal bed prior to inserting the main load of wood. Having
a proper coal bed is the key to a complete ignition of
the main wood load and to maintain the correct firebox
temperatures to get the best emissions and efficiency
output of the furnace.
• After you have completed the preload burn, you may
insert your main firewood load.
• The main load should be the same size or amount as
the preload, approximately 40 pounds of cord wood, 6
to 8 pieces.
• Try to keep gaps between the pieces of wood to help
with the ignition and maintain a good fire.
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