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Fuel and heating power
The fuelling has been optimised from a
technical point of view, both with regard
to the conception of the hearth and the
respective air power supply, and with regard
to the emissions. We invite you to support
our commitment in favour of a clean
environment by observing the following
indications with regard to the use of
fuelling materials which do not contain, nor
produce, noxious substances.
Only use natural and seasoned wood, or
wood briquettes, as fuel. Damp wood,
freshly cut or stored incorrectly, has a high
water content and therefore does not burn
well, produces smoke but very little heat.
Only use burning wood with minimum
two years seasoning in an airy and dry
room. In such case, the water content will
result lower than 20% of the weight. In this
way you will save on fuelling material, as
the seasoned wood has a higher heating
power.
Never use liquid fuel such as petrol, alcohol
or similar. Do not burn waste.
water content
g/kg of wood
Very seasoned
2 years of seasoning
1 year of seasoning
Freshly cut wood
Comparison:
The seasoned wood has a heating power of about 4 kWh/kg, whereas fresh wood has a
heating power of only 2 kWh/kg. Therefore, to obtain the same heating power, double the
fuel is required.
ATTENTION:
If the hearth is powered with an excessive amount of fuel or
with inadequate fuel, the risk of over-heating may be incurred.
USE INSTRUCTIONS
Safety indications
Initial start-up
The paint of the hearth is subject to the so
called ageing until the working temperature
is reached for the first time. This may
cause unpleasant odours. In such case,
adequately air the room where the hearth is
installed.
Danger of burns
The external surfaces of the DOUBLE
hearth, in particular the glassceramic
panels, heat up. Do not touch - danger
of burns! Children should be particularly
warned. Children must be kept away from
the ignited hearth.
Remove the ash only after it has cooled
down and before disposing of it, leave it to
cool down completely for at least 24 hours,
in a non fuelling container.
Heating power
kWh/kg
100
4,5
200
4
350
3
500
2,1
Air grills
Careful not to close or obstruct the hot air
outlets. This causes danger of overheating
inside the covering.
Hearth functioning with panel open
In case of functioning with panel open, the
hearth will have to be constantly kept under
control. Very hot coal may be projected
outside the hearth.
Fundamental indications
Addition of fuel
The use of a protective glove is suggested
to "add wood", in that, in case of
prolonged use, the handle may heat up.
Slowly open the panel. In this way, the
forming of a vortex of leaking smoke is
avoided. When is it time to add wood?
When the fuel has almost turned to coal.
Functioning in mid-seasons
To suck the air for fuelling and to discharge
smoke, the DOUBLE hearth requires
draught from the chimney/flue. With the
increase of the external temperatures, the
draught decreases. Verify the chimney
draught before lighting the fire, in case
external temperatures are higher than
10°C. If the draught is weak, initially ignite
a "starting" fire using small sized igniting
material. Once the correct chimney draught
Higher wood
is restored, you can introduce the fuel.
consumption in %
0
Air flow in the room where the
15
hearth is installed
The DOUBLE hearth is able to work
71
regularly only if in the room where it is
153
installed there if sufficient air flow for the
fuelling. Provide a sufficient air flow before
igniting the chimney. Should the plant be
equipped with it, open the external air inlet
valve and leave it open the whole time the
chimney is in function. The air power supply
devices for the fuelling must not be altered.
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