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Eastwood 1800 Installation and Operation Manual
5.3.5 Turning Down the Air Supply
Once the firewood, firebox and chimney are hot, you can begin to reduce the air supply for
a steady burn.
As you reduce the air supply to the fire, two important things happen. First, the firing rate
slows down to spread the heat energy in the fuel over a longer period of time. Second, the
flow rate of exhaust through the stove and flue pipe slows down, which gives more time for
the transfer of heat from the exhaust. You will notice that as you reduce the air setting, the
flames slow down. This is your indication that the stove is burning at its peak efficiency.
If the flames get small and almost disappear when you turn down the air, you have turned
down the air too early, or your firewood is wetter than it should be. With good fuel and
correct air control use, the flames should slow down, but should stay large and steady,
even as the air supply is reduced.
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