Adjusting The Combustion Air - RAIS Q-Tee II USA User Manual

Adjusting the combustion air

All RAIS stoves are equipped with an easy-to-use handle for adjusting the air control.
For the various positions of the control please see the following illustrations. To en-
sure proper combustion process it is very important to supply the correct quantity
of air at the right time and place. The adjustment range made from factory may not
be altered for increasing firing for any reason.
Primary air is defined as combustion air for burning the mass of wood and stimulates
production of volatile gases.
Secondary air is used to burn off the gases at high temperatures (above
1,000°F/540°C) and to keep the glass free of soot. The secondary air is let through
the air control beneath the combustion chamber and is heated through the side
channels, which is then directed to the glass. The warm air runs along the glass,
keeping it free of soot.
At the very back of the combustion chamber there is a tertiary channel at the top
that helps to combust the remaining gases.
When positioning the air control between Pos. 1 and 2 optimum utilization of the en-
ergy contents of the wood is obtained, because of sufficient oxygen for combustion.
When the flames burn bright and yellow, the control has been adjusted correctly.
Finding the correct position takes some trial and error, but is easy to find.
Never close the air control completely when using the stove. A typical error is to
close the control too soon, because the heat gets too intense. This results in the
appearance of a dark cloud of smoke from the chimney and that means the energy
value of the wood is not being used properly.
It is important for proper control of the fire that the instructions in the manual are
followed and the stove door normally is kept closed. It is also necessary to keep the
seals in a good condition.
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