User manual

INSTALLATION AND USE MANUAL
Chapter 6
page 23
Technical service – Dimplex - all rights reserved - Reproduction prohibited
5.2. CHOICE OF FUEL
To obtain the maximum performance from your Dimplex stove, it is of
primary importance to use wood with suitable characteristics.
It is advisable to use wood for heating such as beech, birch, oak
or ash with good calorific energy, or logs of pressed wood that do not
have resin. These have a high calorific power and must be used
with caution to avoid overheating which could damage the
stove.
It is less advisable to use fuels such as poplar, pine, lime tree, or
chestnut which have low calorific power, since they are soft wood and
also they do not burn for a long time.
Avoid using fuels such as pine or fir as they contain a high degree of
resin and their combustion may substantially soil the fire mouth and the
ceramic glass; also, they do not have a high calorific value.
Even when using the recommended wood types the calorific
energy they contain will be affected by their moisture content.
Only use fully seasoned timber that has been allowed to dry for
a period of at least 12 months.
Do not use treated fuels (such as painted or
varnished wood, or particle board) or unsuitable
materials (such as plastics and derivatives), which
could release toxic or polluting substances. Do not
burn rubbish.
The gases produced by combustion due the use of
unsuitable fuels cause damage to the fireplace stove
and the chimney, they cause pollution and can
compromise your health.
A high percentage of moisture in the wood produces
condensation in the smoke duct and causes an alteration in
the draught. The smoke generated from damp wood can
cause a significant deposit of soot on the glass of the door
and in the flue pipe with a possible risk of a chimney fire
later on.
5.3. FIRST LIGHTING
It is advisable to approach the first lighting with caution, using
good-quality, well-seasoned wood.
The primary air inlet must be fully open. Do not use alcohol,
petrol, or other volatile flammable substances. On first lighting,
fumes and unpleasant smells may be given off, caused by curing of the
paint; this is not hazardous to the health, and it is sufficient to ventilate
the room adequately. Once combustion has started, pieces of wood of
normal size may be added.
The flame must have as far as possible a smooth and laminar flow. On
the various occasions when the stove needs reloading, the
door should be opened slowly, to avoid blowbacks of smoke
into the room.
Wood drying
time (e.g. beech)
%
moisture
Heat
power
Kcal/h
Freshly cut 50 /
3 months 40 2410
6 months 35 2700
9 months 30 2900
12 months 25 3150
15 months 20 3400
18 months 15 3710
21 months 10 3980
Figure 13 – Calorific energy (e.g. beech) in
relation to moisture contained.
Figure 14 – Air register