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USSC 5
Fuel Considerations
SHELLED CORN (Dry, preferably corn with 11% or less moisture content)
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Optimum moisture content of corn should be 11% or less. Wet corn will rapidly deteriorate furnace components,
reduce efficiency and void all warranties. Purchase a moisture tester if in doubt.
Corn must be clean and free from debris. Never burn corn right from the field. Damage caused by dirty corn is not
covered by the product warranty. Ask for clean filtered bagged corn only. Stalk parts, excessive fines and cob
remnants will clog the auger.
NEVER BURN SEED CORN IN YOUR FURNACE. Seed corn is treated with chemical pesticides that are harmful or
fatal if swallowed, therefore, seed corn is dangerous to have in the house, especially where children can reach it.
Never burn “Deer Corn.” It frequently contains molasses/sugars.
Store your corn supply in a dry place and keep bags or container sealed to prevent your corn from absorbing excess
moisture. Test the moisture content periodically to ensure the proper dryness.
There are many varieties of corn grown around the world. Each variety has unique characteristics including the
shape and size of the kernel. Your furnace will burn more consistently with a small to midsize kernel corn. If the
kernel size of the corn varies greatly or if you switch sources frequently, you will get a less consistent burn. Therefore,
purchasing corn from the same source will help achieve a more consistent burn. DO NOT USE CORN WITH A HIGH
WAX CONTENT!
Oyster shell is highly recommended for best burn operations and to reduce clinker build-up
WOOD PELLETS
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As with corn, be consistent in your pellet supplier. Pellets will vary in content and burn characteristics from supplier to
supplier. A consistent supply of pellets will result in a more consistant and efficient burn.
Check your pellets for foreign objects. Your furnace warranty will not cover damage done to your furnace due to
foreign objects in the fuel supply.
Store your pellets in a dry place to prevent them from absorbing added moisture.
To decrease sawdust buildup, the hopper will need to be vacuumed out after every 6-8 bags of pellets or more often
if the pellets are poor quality. You may have to screen each bag of pellets if sawdust becomes a problem.
Wood Pellets vary in size and ash content from less than 1% to 3% or more. Your furnace will burn more efficiently
with small to midsize pellets. Low ash content pellets will allow you to burn the furnace longer between cleanings.
Only wood pellets manufactured to the Association of Pellet Fuel Industries (A.P.F.I.) standard for residential pellet
fuels are recommended. Performance will suffer if nonstandard pellets are used. Consult your local American Har-
vest reseller for more information on approved wood pellet fuel.
CAUTION: DO NOT PLACE SUCH FUELS WITHIN THE SPACE HEATER’S INSTALLATION
CLEARANCES OR WITHIN THE SPACE REQUIRED FOR CHARGING AND ASH REMOVAL.