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11.03
Vedolux 30
Illustrations may differ from the actual product
Allowing for printing errors and errors on proofs
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RESET
ALARM
MAIN
SWITCH
FAN
START
FAN
STOP
20
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25
26
27
28
20. Main switch.
21. Thermostat for fan and charging pump.
22. Fan start when the boiler is cold.
25. Overheating protection.
26. Indicator showing triggered overheat-
ing protection.
27. Thermometer, displays the boiler
temperature.
28. Pressure gauge showing the water
pressure in the heating system.
8
Firewood.as.a.fuel
Opening for
gas lighter
First.burning.cycle
First check that the combustion tunnel is firmly seated and that the
air control pipe, 34a, has not moved during transport.
The first fire to be lit should be started carefully so that any remain-
ing moisture in the ceramic can vaporise slowly. Lighting a fierce fire
may crack the ceramic Only light a small fire the first time. Once the
ceramic parts are dry, you can light a full-size fire. The ceramic does
not take on moisture when the boiler is being used.
Lighting.a.fire.without.gas
• Move the main switch to the green position. Set the thermostat to
250°F (120°C).
• Arrange kindling on top of crumpled newspaper. Push some of the
paper down into the hole in the ceramic. Close the firewood hatch.
• Press “FAN START”, the fan starts. Open the bypass damper. Open
the ash hatch and light the paper.
• The wood must be properly ignited (flue gas temperature approx.
250°F). Leave it to burn until there is a layer of vigorous embers.
Open the ash hatch and the bypass damper.
Lighting.a.fire.with.the.gas.lighter
• Move the main switch to the green position. Set the thermostat to
250°F (120°C).
• Arrange medium size blocks of wood over a layer of kindling, then
fill the rest of the combustion chamber with firewood.
• Press “FAN START”, the fan starts.
• Open the bypass damper and ash hatch. You can leave the fire-
wood hatch open until you can see the flames.
• Ignite the gas lighter and insert it into the nozzle in the opening
(see the diagram below). After around 1-2 minutes the firewood
should be lit.
• Remove the gas lighter, close the ash
hatch, close the firewood hatch, close
the bypass damper. Check that you can
see flames in the inspection glass.
Adding.wood
To prevent smoke and flames entering the
room when adding wood, you must open
the bypass damper before opening the
firewood hatch.
Only add more firewood when all that
is left of the previous load is a layer of
embers.
Constantly “topping up” with the occa-
sional log reduces efficiency significantly.
Even out the layer of embers. Add more
firewood. The amount of firewood depends
on the temperature in the accumula-
tor – do not allow the temperature to get too high. Filling the boiler
with firewood increases the temperature of the boiler and a 400 gal.
accumulator by 110- 120°F. Stack the wood carefully.
Close the firewood hatch and then the bypass damper. If the flue gas
temperature increases, you know that the firewood has ignited.
When the firewood has burnt and the flue gas temperature has fallen
to below 250°F, the fan and charging pump to the accumulator stop
running.
Bypass.damper
The boiler’s bypass damper must only be used for adding wood dur-
ing a burning cycle, in order to prevent smoke entering the room.
When the bypass damper is open, the boiler works like an updraught
burner with shorter flue gas paths. This increases the flue gas tem-
perature and reduces efficiency.
Do not forget to close the damper after adding firewood.
Controlling.combustion
Air is supplied to the boiler partly through the primary damper, which
is hidden behind the cover plate on the front, and partly through the
secondary damper in the lower ash hatch. Combustion is control-
led by the draught created by the fan, and by the addition of oxygen
through these dampers. To optimise combustion and efficiency, the
flue gas temperature should be 350- 400°F.
The secondary damper can be
adjusted so that the flame is light
yellow.
The soot indicates the quality of
combustion. If it is very dark or
black, the combustion process is not
receiving enough air. In this case,
the damper should be opened more.
Efficient combustion gives the soot a
grey-brown colour.
RISK OF BURNS
Do not open the boiler hatches if the fan is not running
and a fire is burning in the boiler. If you are not sure
whether a fire is burning in the boiler, first open the
bypass damper then open the firewood hatch a couple
of centimetres very carefully.
There is a risk of flames exiting through the hatch, so
take the greatest possible care!
