21
Do Not Burn Wet Coal!
Super-Magnum Coal Stoker Stove
3-90-02702R4_08/12
a. Feed Rate Adjustment
The Circuit board runs on a one minute timer cycle.
Each minute, the board is thinking ahead to what it
needs to do for the next minute to maintain or achieve
the demanded temperature. What you are setting on
the feed adjuster dial is the maximum amount of feed
time, per minute, that you'll allow. The circuit board
will make its own determination of how long to run the
feeder, UP TO the maximum as set on the dial. For
instance, a number 4 setting on the feed adjuster will
allow a maximum of 40 seconds per minute of feed. If
the room temperature is satisfied, with only feeding 20
seconds, then that is all the circuit board will run the
feeder. In most tested scenarios, the number 4 setting
is adequate, however, fuel quality may dictate a higher
or lower setting. If you see un-burned or burning coal
being pushed off of the grate during a high demand
period, the feed rate is set too high. Ideally, you'll want
to see about an inch of ashes in front of the burning
coal during a peak demand period. Setting the feed
rate too low may not allow the demand temperature to
be met. Keeping the setting at #4 or above will work
with most batches of coal. Allow a minimum of one
hour between adjustments.
Note: Since the circuit board is feeding as needed,
only adjust the feed rate while maximum demand
is occurring. (Stove Temp Mode, with a temp dial
setting of #7 will create maximum demand.)
b. Mode Selection
Room-Temp mode is the ideal mode of operation if
you wish to maintain a comfortable temperature in
the room. As the outdoor temperature fluctuates, the
Super Magnum will adjust the feed rate to maintain
the desired temperature setting in the room. For best
results, be sure the room sensor is located outside of
any drafty areas and not positioned on the floor or near
an exterior wall.
Stove-Temp mode is more of a manual method of
operation. The stove will run at a constant heat output,
regardless of outside air temperature. Note that on the
coldest days, your indoor heated space will be cooler
than on the warmer days. The only real benefit to this
mode of operation is that you'll be able to know exactly
how long a hopper full of coal will last, because the
consumption is going to stay relatively the same.
c. Temperature Dial
The temperature dial is a dual purpose dial. In Room-
Temp mode, you select the room temperature you want
the stove to maintain at the room sensor probe. This
is marked in fahrenheit scale from 50 to 90 degrees.
In Stove-Temp mode, you select a temperature setting
based on the #1 - 7 with 1 being a minimum burn and
7 being a maximum burn rate.
d. Blower Speed Adjustment
The mode selector is also marked with a L to H scale,
in each mode. This is a variable speed control for the
distribution blower.
L
is the low setting, and
H
is the
high setting. It is important to note that the blower will
not come on until the ESP reaches a high enough
temperature to ensure that cold air is not being blown
out into the room. Also, the speed of the blower, when
set on lower speeds, will automatically increase as the
temperature of the stove increases.
Keep Hopper Lid, Ash Pan, and Fire viewing doors
closed while in operation. Maintain all door seals
and gaskets in good condition. Replace gaskets
when necessary using parts obtianed through
your Harman dealer.
Burning with one or more of the unit doors open
will lead to overfiring which could damage the
appliance, chimney, or connector, or could cause
a house fire.
