Jack SUPER SJ125, Owner'S Manual

Page: 36 / 56

HELPFUL HINTS
Set the draft to proper setting. The chimney, hook-ups, and
kinds of wood will be a factor.
Open the disc on the side of the Draft Inducer Motor (sup-
plied with your Jack furnace) to allow air into the furnace for
combustion. (For Coal) While lighting the coal fire, open disc
all the way. Once a good fire is established, adjust the disc
back to a point where you are achieving the desired amount
of heat and burn times.
Your Jack is capable of holding very large logs. DO NOT try
to add a log that is larger than what you can easily place in
the furnace. You will get best efficiency when you add only
the amount of wood needed for a 4 to 6 hour burn.
In the spring and in the fall when the weather is mild, burning
large loads of wood for long periods may cause creosote.
Stack (chimney) temperature should be 300º for good burn-
ing. Again, depending on the weather, you may not need a
full load of wood for a good overnight burn. You will get the
best efficiency when you add only small amounts of wood.
Let the thermostat and draft inducer blower do their jobs.
They should cause a “high burn - low burn” cycle. Do not let
the wood smolder.
You can use wood of various shapes, diameters and lengths,
but not to exceed the maximum recommended loading
height.
Always try to place the logs so air has free flow between
them, increasing combustion.
CAUTION:
DO NOT LOAD WOOD OR COAL HIGHER
THAN THE TOP OF THE FIREBRICKS.
Failure or damage to the firebox could result.
Operating Instructions
36