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Outside Combustion air may be necessary for an indoor installation if:
• The solid-fuel-fired appliance does not draw steadily, smells, experiences smoke rollout, burns poorly, or back-drafts whether
or not there is combustion present. Opening a window slightly on a calm day alleviates these symptoms.
• The house is equipped with a well-sealed vapor barrier and tight fitting windows, and/or has any powered devices, which
exhaust house air.
• There is excessive condensation on windows in the winter.
• A ventilation system is installed in the house.
CAUTION: HOT SURFACES. KEEP CHILDREN AWAY. DO NOT TOUCH DURING OPERATION.
BURN WOOD AND COAL ONLY!
General
Operation:
First Wood Fire:
Set the wall thermostat to 90°F. Check to make sure the spin draft is wide open to allow oxygen into the firebox. Make sure the switch for
draft blower is in the ON position. Adjust slide cover on draft blower to an opening of approximately ⅜ inches.
Place several crumpled newspapers on the grate with some dry kindling layered on top of the papers, then ignite the newspaper. When
the kindling is burning, add several small pieces of wood, allow wood to fully ignite. After about 20 minutes the fire should be established,
allowing you to add more wood – do not overload which would smother the fire. Add more wood slowly, so the flames have time to engulf
the fresh wood. Once the fire is burning and there is a glowing ember bed, adjust the draft to achieve desired burn pattern. Learning
how to adjust the draft to maintain the desired temperature for your home may take several days. After a short time you will know which
settings and adjustments work best for your home. Set the wall thermostat to the desired home temperature.
Do not over-fire the furnace. Over-firing by overloading/over fueling the furnace causes the metal to superheat and expand, then cool
rapidly, which causes cracking, therefore voiding the warranty. Over-firing or abuse can easily be determined upon inspection.
It will take about 40 minutes to establish a bed of hot embers. Once you have achieved the hot ember bed, add larger pieces of firewood
and push the bypass rod all the way in. Within 30 to 40 minutes, adjust the spin draft to obtain optimum performance. Finally adjust the
wall thermostat and draft blower cover to a comfortable setting. See diagram on page 16 (spin draft). Ash pan must remain out of furnace
during operation.
NOTE: Your new Shelter Furnace is capable of producing a very high output of BTUs. Do not fuel your furnace to capacity upon initial
firing. It’s recommended that you become thoroughly familiar with your Shelter Furnace before operating at full capacity.
The new steel and metal components of the furnace have a protective coating or paint on the surface which could produce an odor during
the break in period. Adequate ventilation within the home and furnace room or area is recommended during the initial firing and break
in period to accommodate this possibility. Your new Shelter Furnace is classified as having airtight construction. This type of design
should enable you to experience an average burn time between 6 and 8 hours per full load of fuel (dry, seasoned hardwood). However,
abnormally cold weather may reduce the burn time somewhat, but if your burn cycle is significantly less, for instance, 2 to 4 hours, you
are over-firing your furnace. This type of occurrence is usually symptomatic of heat demands in excess of furnace capacity. Contact an
authorized professional to determine if your Shelter Furnace has been improperly sized for your home.
Loading Wood:
When opening the fuel door during operation, always pull the bypass rod all the way out before opening the fuel door, wait 10 seconds
after releasing the first latch, then open the door the rest of the way. The dual latch system has been incorporated as a safety feature,
designed to reduce the possibility of gaseous ignition. Laboratory testing has determined that when incomplete combustion occurs
the partially spent fuel sometimes concentrates large amounts of potentially hazardous gases within the fire chamber. If the door is
opened suddenly under these conditions, the oxygen may combine with these gases and cause ignition referred to as “back flash.” Use
EXTREME CAUTION when opening the fuel door.
When reloading the furnace, spread embers evenly over the grate. Place smaller pieces of wood or coal on the hot embers and layer
larger pieces on top of them. Finally, due to the wide variety of temperature ranges during the winter, you may experience periods when
it is not necessary to fully load the fire chamber in order to maintain an overnight burn. Your Shelter Furnace will operate at the highest
