Fuel Requirements - Jøtul I 520 Handbuch

• Fuel overloading: The maximum amount of fuel specified
in this manual should not be exceeded, overloading can
cause exess smoke
• Operating with door left open: Operation with the door
open can cause excess smoke. This appliance must not
be operated with the appliance door left open except as
directed in the instructions.
• Dampers left open: Operation with the air controls or
apploance dampers can excess smoke. The appliance must
not be operated with air controls, appliance dampers or door
left open exept as directed in the instructions.
Warning against overheating
Never overheat the fireplace
The fireplace has been designed and tested for use at a nominal
output of 7 kW. This corresponds to a combustion rate of about
2.3 kg of wood per hour.
The maximum amount each time is 3.4 kg per hour (3-4 logs at
a time).
Important!
• Never have a fire burning with the ignition vent fully open
for any length of time. A sure sign of overheating is when
parts of the stove glow red. If this happens, reduce the air
vent opening immediately.
• Seek professional advice if you suspect that the chimney is
not drawing properly (too much/too little draught).
Odours when using the fireplace for the first
time
When the fireplace is used for the first time, it may emit an
irritating gas which may smell slightly. This is because the paint
on the outside is drying. The gas is not toxic but you should open
some windows to ensure the room is thoroughly ventilated. Let
the fire burn with a high draught until all traces of the gas have
disappeared and no smoke or odours can be detected.

5.4 Fuel requirements

Wood quality
Chopping and storing wood
• You can use any type of wood as firewood. However, harder
types such as beech and ash are generally better as they burn
more evenly and create less ash. Other wood types, like maple,
birch and spruce, also make excellent firewood.
• Firewood is best if you fell the tree and saw and split the
wood before May 1st.
• Remember to cut the logs to the size of your stove's
combustion chamber. We recommend a diameter of 6 to
10 cm and the length should be about 10 - 20 mm shorter
than the combustion chamber, to leave enough space for air
to circulate. Logs with a larger diameter than this will need
splitting before use. Split wood dries faster.
• Sawn and split logs should be stored in a dry place for 1 to 2
years before they are sufficiently dry to use.
• It's a good idea to bring logs in to stand at room temperature
for a few days before using them.
Moisture
To avoid environmental problems and to ensure optimum
burning efficiency, the wood must be completely dry before it
is used as firewood:
• The moisture content should not be more than 20%.
• A moisture content of between 15% and 18% yields best
results. An easy way to check if wood is dry is to knock two
logs together. If the wood is damp, the logs will sound dull
when knocked together.
• If the wood used is too damp, most of the heat it produces
will be used to evaporate the water. The stove does not heat
up and does not heat the room. This is not economical. It also
causes soot to build up on the glass, in the burn chamber and
in the chimney. Burning damp wood also causes pollution.
Be especially careful never to use the following materials as fuel
in your fireplace:
• Household rubbish, plastic bags, etc.
• Painted or impregnated timber (which is extremely toxic).
• Laminated wooden planks.
• Driftwood
These may harm the product and are also pollutants.
NB: Never use petrol, paraffin, methylated spirit or similar liquids
to light the fire. You may cause serious injury to yourself and
damage to the product.
5.5 Wood consumption
Wood consumption, at nominal heat output: Approx. 2.3 kg/h.
The size of the logs should be:
Kindling (finely split wood):
Length: 30 - 50 cm
Diameter: 6 - 10 cm
Quantity for kindling: 3 logs weighing 0.6-0.8 kg each and 10 to
12 sticks weighing about 1 kg in total.
Stoking the fire:
Wood (split wood):
Length: 30 - 50 cm
Quantity required each time: 2 or 3 logs weighing 0.7 kg each, i.e.
1.5-2.0 kg each time.
Stoking frequency: Approx. 50 minutes
Nominal heat output is achieved when the air vent is open
approximately 40% to 70% and the ignition vent is open 0% to
50%.
When testing in accordance with the EN 13229 standard, the
amount used is 3 pieces of 1.7 kg.
Vent setting: 50% opening of the ignition vent and 50% opening
of the air vent.
ENGLISH
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