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2. Second Stage
The next stage of burning, the secondary stage, is the
period when the wood gives off flammable gases which
burn above the fuel with bright flames. During this stage of
burning it is very important that the flames be maintained
and not allowed to go out. This will ensure the cleanest
possible fire. If the flames tend to go out, it is set too low for
your burning conditions. The air control located at the upper
right hand corner is used to adjust for burn rates. This is
called the Burn Rate Air Control (Figure 11.1).
3. Final Stage
The final stage of burning is the charcoal stage. This occurs
when the flammable gases have been mostly burned and
only charcoal remains. This is a naturally clean portion of
the burn. The coals burn with hot blue flames.
It is very important to reload your appliance while enough
lively hot coals remain in order to provide the amount of
heat needed to dry and rekindle the next load of wood. It
is best to open the Burn Rate Air and Start-Up Air Controls
before reloading. This livens up the coal bed and reduces
excessive emissions (opacity/smoke). Open door slowly so
that ash or smoke does not exit appliance through opening.
You should also break up any large chunks and distribute
the coals so that the new wood is laid on hot coals.
Air quality is important to all of us, and if we choose to
use wood to heat our homes we should do so responsibly.
To do this we need to learn to burn our appliances in the
cleanest way possible. Doing this will allow us to continue
using our wood appliances for many years to come.
D. Air Controls
Users will need to find their preferred setting between
high and low based on desired heat output, installation
configuration, and fuel type.
1. Burn Rate Air Control
This air supply enters at the upper front of the firebox, near
the top of the glass door. This preheated air supplies the
necessary fresh oxygen to mix with the unburned gases,
helping to create second, third and fourth combustions.
This air is regulated by the Burn Rate Air Control. When
the control is moved all the way up it is on the High setting
and when moved all the way down it is on the Low setting
(Figure 11.1).
2. Automatic Combustion Control System (ACC)
To engage the Automatic Combustion Control (ACC) timer
system push the lever towards the back of the appliance to
the "HI" position, then pull forwards towards the front of the
appliance until the knob stops. The timer will slowly close in
about 25 minutes. Use this feature when reloading fuel or if
you want more air supplied to the fire (Figure 11.3).
August 13, 2018
E. Using Burn Rate Air Control & ACC System
1. Start up and Reloading Fuel
Open both Burn Rate Air Control and ACC systems fully. To
do this with the Burn Rate Air Controls push spring handle
up to high. For the ACC timer system push knob towards
back of appliance until the knob is located under the high
position (Figure 11.1).
2. Maximize Heat with The ACC System
To maximize heat output with the ACC timer System or also
known as high burn push the ACC Air Control lever towards
the back of the appliance and leave. This combined with
having the main burn rate control lever pushed up will
deliver the most amount of air needed to achieve the
highest amount of heat output (Figure 11.1).
3. Manual Timer Over-Ride
If you need to shut the ACC system off before it goes
through the cycle of shutting itself off; 25 minutes, reach
towards the back of the appliance on the right side and pull
the lever towards the front of the appliance (Figure 11.2).
Injury Risk.
•
Gloves recommended
Burn Rate
Air Control
Start-Up
Air Control
Figure 11.1
Timer (ACC)
Pull Forward
Shut Down
to Shut Down
Figure 11.2
7038-227C
CAUTION
HIGH
MED
LOW
Manual
Figure 11.3
57ST-ACC-C
11
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