25
UNILUX-6 70
Instructions for use
8
FREQUENTLY ASKED QUESTIONS
How often should I have my chimney swept?
At least once a year. If you use your appliance more than three times a week on average,
have your chimney swept more often. Have the chimney swept by a recognised
company
. Your fi re insurance policy may make this a condition and ask for proof.
Does a closed appliance have better output than an open appliance?
Yes, a closed appliance has between 8 and 10 times the effi ciency of an open
appliance. (See also Chapter 5.7.)
What is the difference between net capacity, gross capacity and effi ciency?
Net capacity (= Nominal output) represents the net amount of heat that the appliance
generates.
The total heat content of the fuel is the so called gross capacity.
Effi ciency is the percentage of fuel converted into useful heat.
It is the ratio of net capacity and gross capacity.
How can I keep the glass clean?
By making a point of using dry, clean wood in the appliance.
Wood that is too damp immediately gives off lots of ash.
Make sure the seals are in good working order. Any air seeping out around the glass
part of the door will cool the air, resulting in the appliance not burning cleanly.
How much wood will I use?
That depends entirely on how you heat your room, what sort of appliance you have and
the size of the room you are heating. As a general rule, an appliance used in accordance
with our guidelines (no air under the fuel, topped up once an hour) each kg wood produces
an output of about 3 kW.
In an averagely-insulated house, the general rule is that in a room of 80 m
3
, you need an
appliance with an output of around 7 kW. For each subsequent 10 m
3
, add on 0.6 kW.
In a relatively well-insulated house, the general rule is that in a room of 80 m
3
, an
appliance of 5.5 kW is adequate, and for each subsequent 10 m
3
, you need to add a
further 0.4 kW.
Can a wood-burning appliance/fi replace insert be connected to a central heating
installation?
The Barbas range does not have any appliances that can be connected to central
heating installations. W
e do not advise attempting it!!
Summary of Contents for UNILUX-6 70
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