Myriad II Installation and Operation Manual
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4.3.5 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.
4.3.6 Use of the bypass damper
Your stove is equipped with a bypass damper. This feature should be used, if needed,
upon start-up of the stove to help heat-up the chimney faster. The bypass damper should
be closed as soon as there is a fire going inside the firebox and smoke is moving upward
through the exhaust system. The bypass damper should also be used upon reloading to
avoid smoke spillage into the room. Before reloading your stove, open the primary air
intake control completely and then, open the bypass damper. Wait for approximately 10 to
15 seconds and open the stove door. Close the bypass damper when you are finished
reloading. Never leave the bypass damper open under any condition unless you are
building a fire or reloading the unit. To open the by-pass damper, insert the removable
handle into the small rod extension located on the left-end side of the unit. Turn the
handle clockwise to open the damper. Turn the handle counter clockwise to close the
damper.
