United States Stove 1500 Furnace User Manual


 
13
2" MIN. AIR SPACE
REQUIRED BY CODE
18" MIN.
CENTRAL
FURNACE
PLENUM
TO
CEILING
6" MIN.
Figure 12
Operating Instructions
FUEL, Models 1500 & 1537G
Egg size (1-3/16" or larger) bituminous coal for residential furnaces, or any of the specially packed fireplace
coals can be used. Coal with a low ash content (2% to 6%) is recommended.
Hardwood, 18" to 26" should be split and air dried (seasoned) for 6 months.
LIGHTING
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Set the thermostat on "HIGH" for maximum draft.
Open the feed door and place paper and kindling on the grate for starting the fire.
Light the fire and close the feed door.
Add wood or about 15 lbs. of coal (depending on which model) after fire is burning briskly. Set thermostat
for desired temperature.
"MEDIUM" setting is normally satisfactory. Set higher or lower for your comfort.
ADDING FUEL
When starting a fire, add small amounts of fuel instead of adding large quantities of fuel. This will give more
complete combustion and less build-up of tars or soot in the chimney.
Set thermostat to HIGH before opening feed door.
Wood fire: Add wood to a convenient level.
Coal Fire:
Never smother the fire when adding coal (See Caution). Gas accumulation and a mild smoky explosion
will occur. Add fresh kindling if the bed of coals has cooled.
Add up to 20 lbs. of coal per loading. Never add coal above the bottom of feed door opening.
Stir the coal and watch the fire. Be sure the new coal is burning briskly before you close the doors and
turn the thermostat down.
Shake grates vigorously 1/2" left to right to spill ashes into the ash pan. Do this at least once every 12
hours of operation. Empty ash pan regularly. Do not allow ashes to build-up to grate as grate will warp
and burnout, and you might spill the ashes when removing the pan. Dispose of hot ashes properly (See
note 12 on page 4).
Rotation of the handle (5 o'clock to 7 o'clock) position will agitate coals and spill ashes into ash pan.
It is advisable for you to get familiar with the shaker grate operation before firing.
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