United States Stove Company 7700 Manual page 29

• Ignition problems
• Low energy yield
• Incomplete log combustion
Smaller pieces of wood will dry faster. All logs exceeding 6" in diameter should be split. The wood should not be stored directly on
the ground. Air should circulate through the cord. A 24" to 48" air space should be left between each row of logs, which should be placed
in the sunniest location possible. The upper layer of wood should be protected from the elements but not the sides.
TESTING YOUR WOOD
When the furnace is thoroughly warmed, place one piece of split wood (about five inches in diameter) parallel to the door on the bed
of red embers.Keep the air control full open by pulling on it and close the door. If ignition of the piece is accomplished within 90 seconds
from the time if was placed in the oven, your wood is correctly dried. If ignition takes longer, your wood is damp.
If your wood hisses and water or vapor escapes at the ends of the piece, your wood is soaked or freshly cut. Do not use this wood in
your furnace. Large amounts of creosote could be deposited in your chimney, creating potential conditions for a chimney fire.
To minimize the risk of smoke spillage when opening the door with a fire in your furnace, crack the door open no more
than 1" and wait for at least 10 seconds before opening it more to allow pressure stabilization inside the furnace.
THE FIRST FIRES
The fresh paint on your furnace needs to be cured to preserve its quality. Once the fuel charge is properly ignited, only burn small
fires in your furnace for the first four hours of operation. Never open the air control more than necessary to achieve a medium burn rate.
Make sure that there's enough air circulation while curing the furnace. DO NOT connect your furnace to the ductwork during this
curing process. The odors could be smelled during the 3 or 4 first fires. Never start your furnace outside. You will not be able to see if
you are over heating.
LIGHTING YOUR WOOD FURNACE
1) Make sure that your furnace has been installed as per the instructions outlined in this manual and the proper power is supplied to it.
2) Open the fuel loading door.
Note: If there already is a bed of hot/glowing coals in the combustion chamber, proceed directly to the Preheating step.
3) Place several pieces of small dry kindling in the front of the combustion chamber directly on the firebricks.
4) Lay a few twists of newspaper over the kindling.
5) Lay more dry kindling (crisscrossing) on top of the previous layers and possibly a few more twists of newspaper if needed.
6) Light the lowest newspaper in the stack.
Note: In some draft situation you may be required to leave the door cracked no more than ½" only till a fire is established in the stack
PREHEATING YOUR WOOD FURNACE
1) Once the kindling is burning well or the glowing coal bed is stirred up, lay 2 or 3 pieces of well-seasoned cordwood down so that
the flame from the kindling fire can circulate around the logs and close the door.
Note: You may need to add more kindling to help ignite the cordwood.
2) Before loading your furnace fully you will want a well-established fire in the combustion chamber. This typically takes 15-20 minutes.
HEATING WITH YOUR WOOD FURNACE
1) Spread the fire and coals evenly towards the center of the combustion chamber before loading your furnace fully or adding more wood.
2) Avoid overfilling the combustion chamber. Air must be allowed to circulate freely through the upper portion of the combustion
chamber for the stove to perform best. Typically this would mean not to load your furnace more than ¾ of the way up the door opening.
OPERATION
Controlled combustion is the most efficient technique for wood heating because it enables you to select the type of combustion you
want for each given situation. The wood will burn slowly if the wood furnace air intake control is adjusted to reduce the oxygen supply
in the combustion chamber to a minimum. On the other hand, wood will burn quickly if the air control is adjusted to admit a larger
quantity of oxygen in the combustion chamber. Real operating conditions may give very different results than those obtained during
testing according to the species of wood used, its moisture content, the size and density of the pieces, the length of the chimney, altitude
and outside temperature.
CAUTION: Never alter the damper slide or the adjustment range to increase firing for any reason. Doing so could result in
OPERATION
• Creosote build-up causing chimney fires
• Blackened windows
NOTICE:
heater damage and will void your warranty.
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