© EUROHEAT DISTRIBUTORS (H.B.S) LTD. June. 2010
Instructions Part Number IN1180 Ed.D1
21
Wood releases its volatile gasses when heated, if insufficient air is available,
or the temperature is below the ignition temperature of these gasses,
they will deposit themselves as tar and other undesirable substances on
the insert body, glass and in the flue. Filling the insert with wood and
restricting the air supply may be the only option available to many who
want to keep the insert warm for extended periods but it is not necessary
for you to adopt this ant-social practice.
Your insert has been designed to burn all the gasses from the wood as a
priority, leaving the charcoal to burn later. Good quality charcoal, which
is what the insert will produce, has the ability to burn slowly and cleanly
with a restricted air supply, and by allowing the charcoal to build up in
the insert it will provide many hours of clean gentle heat. The amount of
charcoal needed to burn for any length of time is surprisingly small but the
quantities can be increased by putting new loading of wood to the front of the insert.
Of great importance is that the insert’s air is not reduced to a very low setting if flames are still visible; reducing
the air to a minimum will extinguish any flames and cause tar and smoke to be produced. Always wait until no
more flames are evident before you can safely turn the air volume to a minimum setting with no fear of staining
the glass. The actual setting needed will depend upon the performance of your flue setting, and by raking the
ashes through the grate in the morning will reveal either no charcoal remains which means the setting was too
high, or a cold insert and an abundance of charcoal indicating the setting was too low. If any charcoal remains
never assume it not to be burning. If you rake any charcoal over the grate, close the insert door and set the
air controls to their lighting position it will almost always begin to glow even when it gave no sign of burning.
Placing wood, whose size is in proportion to the amount of charcoal remaining, over the burning charcoal will
rapidly produce a good fire because the insert and flue will have retained some residual heat. This technique of
using only the charcoal to burn should be used whenever the insert is to be left unattended for long periods.
If you have managed to run your insert overnight, without staining the glass, you have achieved the highest
achievement possible as a insert operator and you should award yourself an enormous gold star.
Slow, Overnight Burning
