Nordpeis Havanna Manuel D'installation page 7

Choice of Fuel
All types of wood, such as birch, beech, oak, elm, ash
and fruit trees, can be used as fuel in the fireplace.
Wood species have different degrees of hardness - the
higher the hardness of the wood, the higher the energy
value. Beech, oak and birch have the highest degree of
hardness.
NB! We do not recommend the use of fuel briquettes /
compact wood in our combustion chambers, as these
products may develop significantly higher temperature
than the combustion chamber can withstand. Burning
briquettes / compact wood is at your own risk and can
cause invalidity of the warranty.
Warning:
NEVER use impregnated wood, painted wood,
plywood, chipboard, rubbish, milk cartons,
printed material or similar. If any of these items
are used as fuel the warranty is invalid.
Common to these materials is that they during
combustion can form hydrochloric acid and
heavy metals that are harmful to the environment,
you and the fireplace. Hydrochloric acid can also
corrode the steel in the chimney or masonry in
a masonry chimney. Also, avoid firing with bark,
sawdust or other extremely fine wood, apart from
when lighting a fire. This form of fuel can easily
cause a flashover that can lead to temperatures
that are too high.
Warning: Make sure the fireplace is not
overheated - it can cause irreparable damage to
the product. Such damage is not covered by the
warranty.
Source: "Håndbok, effektiv og miljøvennlig vedfyring" by Edvard
Karlsvik SINTEF Energy Research AS and Heikki Oravainen, VTT.
http://www.eufirewood.info
GB
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