Ashby-MF Insert
34
Initial damper settings for burning with Corn, Wheat, Rye, Cherry Pits & distiller’s Grain.
Heat level 1: Slide lever back until it stops.
Heat level 2: Open damper to 1/16 of an inch.
Heat level 3: Open damper to 1/8 of an inch.
Heat level 4: Open damper to 3/16 of an inch.
Heat level 5: Open damper to 3/16 of an inch.
Observe the flame and if more air is needed based
on variations in the installation and adjust the
damper from these positions if needed. Adjust the
damper 1/16 of an inch at a time and wait 5
minutes between adjustments to allow the pot to
balance out.
Figure 20
Units connected to a
Horizontal Vent
system by using the “Zero Clearance Cabinet as shown in
figure 7 or vented as shown in figure 14 will require the damper to be open further, start by
opening the damper an additional 1/16” to compensate for any restriction due to venting
horizontally.
Procedure for adjusting the damper for burning Grains and Cherry Pits -
When burning
Corn, wheat, rye & Distiller’s Grain the burn pot should be
“Balanced
”. This means the fuel that
is being fed into the burn pot rapidly turns into glowing coals. If you see a lot of unburned fuel in
the pot, an adjustment may be needed. In an unbalanced pot, the corn, wheat or rye will quickly
stick together and prevent the proper flow of combustion air. The pot will overload and the fire
will go out.
Conditions indicating Inadequate or Excessive Draft
When burning Corn, Wheat, Rye or Distiller’s grain the effects of inadequate and excessive draft
will be the same. The pot will overload (see point 3 below) and the fire will go out. The rule of
thumb is to make small adjustment to open the damper if the vent is horizontal and to make small
adjustments to close the damper if the vent terminates above the roof.
1.
Balanced
burn pot. This means the fuel rapidly turns into red-hot coals once it is in the pot.
2.
Lag time
. This is the time it takes for the corn to start burning and the burn pot to become
balanced. Corn will tend to stick together in a clump in the burn pot if the corn feeds in faster
than it’s burning.
3.
Overloaded
burn pot. If the corn forms a clump in the burn pot it chokes off the airflow
and the pot will overload and slowly the fire will die out.
