22
UNILUX-6 40
Instructions for use
6.2
HEAT RADIATION
The table below shows the temperatures which can theoretically be achieved by
burning wood.
Heat radiation
Sort of fuel
kWh/kg
Dry wood (
average
)
4.3
Briquettes (
average
)
5.0
The heating value of wood (18.7 MJ/kg at 0% humidity) is not affected by the sort of
wood. What does make a difference is the relative humidity of the wood (15.6 MJ/kg
at 15% humidity).
Burning one layer of wood can lead to varying outputs. When used correctly, one load
will burn in around 45 minutes. Putting in too much wood at once can lead to the
appliance being overloaded and can cause excess smoke.
Each appliance is constructed for a certain maximum amount of fuel.
Remember that the more fuel you put into your appliance, the hotter it will become and
overheating may even occur. If this happens, there is a risk of fi re. It may also damage
your appliance and chimney.
BARBAS will not assume liability for damage caused by overheating.
ê
Per fi lling:
Approx. burning time
Wood:
2 blocks each around 0.6 kg
45 minutes
Briquettes:
2 blocks each around 0.5 kg
45 minutes
Coal / briquetted
1 kg per load
1 hour
smokeless fuel *):
Dimensions wood block: c. 15 cm long and 25 cm perimeter .
The maximum burning load is based on a nominal capacity of 5 kW and a
effi ciency of 76%.
*) To burn coal or briquetted smokeless fuels the appliance must be equipped with a
multi-fuel kit
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