10
Operation
Automatic Draft Control
The heat output is regulated by the automatic
draft control on the bottom door. The electric
motor (a) opens and closes the apper door (B).
Opening and closing the apper door regulates
the air ow into the rebox.
The maximum air ow can be adjusted by turning
the adjusting bolt (C). Turn counter-clockwise for
more air, and clockwise for less air. adjust this
bolt only while the apper door is in the closed
position. Otherwise, motor damage could occur.
The idle air adjuster (D) controls the minimum
amount of air that enters the rebox. adjustment
is made by turning the adjuster vertical for zero
idle air, or horizontal for maximum idle air. It is
best to start out with a medium setting as shown
in Figure 9.

FIG.8

FIG.9

Starting a Wood Fire
Make sure the boiler and all piping is full of water
and that all air has been purged from the system.

Never start a re without water in the

system. An explosion will occur.

Turn on electrical power to the boiler. This should
cause the automatic draft control to open.
Open the ash pan door to allow free air
movement. With the rebox door open, crumble
approximately 8 sheets of newspaper and place
on the grates. lay some small kindling on top of
the newspaper. Be sure this kindling is dry and no
more than 3/4 in. in diameter. layer the kindling in
a criss-cross type pattern, to allow maximum air
ow. next lay some larger pieces of wood on top of
the kindling (approximately 2 in. diameter). Using
a match or lighter, light the paper just inside the
door. Close and latch the rebox door and allow
the re to burn a few minutes. after about ve
minutes, close the ash pan door and re-open the
rebox door an inch or two, to allow the smoke to
clear. add 4 or 5 larger logs (about 4 in. diameter)
to the well established re and close the rebox
door. leave the ash pan door open for about ve
minutes only. now open the rebox door using the
same method as before, always closing the ash
pan door before opening the rebox door. now
you can load the rebox to the desired level. You
may load wood to the top of the rebox. Close and
latch the door. The ash pan door may again be
opened to speed the ignition process.
Do not leave the boiler unattended with any
door open.
after the wood is burning well, close the ash pan
door. The automatic draft control will now regulate
the re, based on temperature demand.
The idle air adjuster must be tuned to where the
re doesn’t go out during long periods with no
demand. Experience will dictate the best setting
for your installation. normally, the two manual
draft controls on the rebox door are kept closed
while burning wood.