GB
11
CHOICE OF FUEL
All sorts of logs, such as birch,
beech, oak, elm, ash, conifers and
fruit trees can be used as fuel in
the stove. Different types of wood
have different density, the higher
the density the higher the energy
value. Oak, beech and birch have
the highest density.
The wood’s moisture
content
Fresh wood is about 50 per
cent water. Some of the water
circulates freely between the
fibres and some of the water is bound in the cells. The wood must
always be dried so that the free water evaporates. The timber is
ready for use when the moisture content has fallen below 20 %.
If wood with a higher moisture content is lit, a large part of the
energy content of the wood is used boiling off the water. If the
wood is damp, the combustion is also poor, layers of soot and tar
build up in the chimney and could, at worst, lead to a chimney fire.
In addition, it causes the glass of the tiled stove to soot and may
cause discomfort to those living nearby.
To ensure thoroughly dry wood, the wood should be cut in the
winter and stored, well aired, under a roof. Never cover the wood
pile with a tarpaulin to the ground. The tarpaulin will then act as a
sealed cover and the wood will be prevented from drying. Always
store a small amount of wood indoors for several days before use,
so that the surface moisture has time to evaporate.
You must NOT burn the following
Under no circumstances may pressure impregnated wood, painted
or glued wood, chipboard, plastic or colour brochures be used as
fuel. All these materials can create hydrochloric acid and heavy
metals that are damaging both to the environment and the stove.
Hydrochloric acid can also attack the steel in the chimney or the
mortar in a stone built chimney.
WHAT DOES THE SWAN MARK MEAN?
• A Swan marked stove affects the environment considerably
less than other stoves.
• A Swan marked stove has proven efficient combustion and the
whole production process from raw material to waste is taken
into consideration.
• The Swan mark places stringent requirements on, among other
things, the efficiency and emissions of particles, hydrocarbons
and carbon monoxide.
• A fire in an environmentally adapted stove with high efficiency
also means lower wood consumption to heat the home.
• The Swan mark makes it easy for you to be part of building a
sustainable future.
378
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378
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STOVE MAINTENANCE
The glass may be come sooty with use, even if the fire is lit with dry
wood with a moisture content of 15 – 20%. Wiping with dry paper is
often sufficient when cleaning regularly. If the soot has been on the
glass for longer it can be removed using cleaning agent or a specific
soot removal agent. These cleaning agents can be purchased at your
local supermarket or your local stove dealer.
Never use cleaning agents that contain any abrasives, these can damage
the glass.
Ensure that no embers remain when removing ash from the stove. The
ash must be stored in a fireproof container with a lid for for at least a
week before being disposed of.
Soapstone can be cleaned using washing-up liquid or wiped with pure
acetone. Do not place flammable objects or candles on the soapstone.
The grate and other cast iron components can be cleaned using a
wirebrush.
It is important that the gaskets are checked from a combustion point of
view, because worn gaskets reduce combustion because the stove draws
additional air.
Painted parts of the stove can be cleaned with a damp cloth and, if
necessary, a little washing-up liquid. Damage, such as scratches, to
painted parts can be repaired using Contura touch up paint. Contact
your dealer.
Because there is a constant flow of air though the stove, cold room air
is drawn in and hot air released, dust can gather behind and under the
stove. Therefore, one should regularly clean under and behind the stove.
The fire should not be too big. Large fires are uneconomic and
also produce high smoke temperatures that can damage the
stove and the chimney. The recommended amount of wood is
1.5 kg/hour and the maximum permitted is 2.2 kg/hour and
then refers to burning split birch or other broadleaf wood
with 18% moisture content.
When lighting the same weight
of conifer wood, significantly
higher stove temperatures
are reached. Maximum fire for
long periods reduces the life
of the stove and exceeding the
permitted wood amounts can
lead to damage to parts of the
stove and the warranty being
invalidated.
AVOID TOO LARGE A FIRE