For the user
Värmebaronen Viking Bio 200
25
Draught damper
The draught is affected by temperature, weather
and wind. As the combustion is affected by the
draught, stable draught conditions should be the
objective. The hatch lets boiler room air into the flue.
The advantages of this are:
• more stable draught and flue gas temperature
• reduced stoppage losses
• ventilation of the flue
• drier flue gases, which reduces the risk of
condensation
Efficiency
The aim is to achieve high efficiency, which means
extracting as much heat as possible from the pellets.
In fact, this involves reducing losses. The losses that
should be minimised are:
Flue gas loss:
The heat in the flue gases that
escape via the chimney.
Stoppage losses:
While the burner is not operating,
the chimney draught sucks cold
air through the boiler, thus cooling
it. This loss can be reduced by
means of a draught damper.
Insulation losses:
Heat leakage via the boiler's
insulation. A small part of this
is recovered by the combustion
air being heated. In some cases,
some of it benefits the building.
Power mode
The burner can be set to two power levels. It is a good
idea not to use higher power than necessary but not so
low that the indoor temperature or temperature of hot
water is too low. A lower power for the burner results
in a longer operating time and lower stoppage losses,
which produces higher boiler efficiency.
Seasonal changes mean that it can often
be a good idea to change the power mode
several times a year.
Temperature control via the burner
The temperature sensor (accessory) must be connected
to the burner and activated in the menu.
The burner's temperature control controls the
temperature with adjustable start and stop
temperatures.
When it is idle, the burner senses a rapid decrease in
temperature, which may occur in an 'exchanger boiler',
for example, when hot water is drawn off. The burner
then starts before the temperature has fallen to the set
start temperature.
The temperature control is also suitable when the
burner has been installed in a boiler which works with
an accumulator tank.
Smoke in boiler room
Smoke can escape into the boiler room following a
downblast in the chimney or negative pressure in the
boiler room. The cause may also be leaky hatches
and dampers and defects in the chimney or the join
between the chimney and the boiler.
A smoke detector is a good way of discovering whether
flue gases are leaking out into the boiler room.
The boiler hatches must be closed when the burner is
in operation.
Safety
From the point of view of fire safety, it is important for
the boiler room to be clean and free of dust.
Flammable substances must not be stored in the boiler
room.
The door to the boiler room must be closed.
In the event of fire or any other hazard,
cut the power to the burner and take the
necessary action.
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