20
Värmebaronen Vedolux 55
The most common problems associated with wood firing usually result in the boiler not achieving a sufficiently
high temperatures. The boiler doesn't really get going. It is also common for the heat not to be transferred to the
accumulator tanks although the boiler is burning well.
Boiler burns poorly
Damp wood.
A ceramic boiler requires a high combustion temperature.
To achieve this, the wood must be dry with a moisture
content of 8-24%.
Incorrect handling.
Read the manual.
The wood is not adapted
to the boiler.
Its length should be 20 in. Its thickness should be such
that three pieces of wood have room on the width of the
grate.
Shaped wood, studs.
If evenly shaped pieces of wood are stacked on top of
each other, they form a solid lump of wood with little
surface for the fire to gain a hold on. Insert the wood so
that there is air between the pieces.
The wood gets stuck.
This occurs when the wood is bent and not adapted to
the combustion chamber. Adapt the wood to the boiler.
Insufficient supply air.
The supply air duct for the boiler room must have at least
the same area as the flue. Check that the supply air valve
is open.
Secondary air damper open
too far.
If the damper is open too far, the distribution between
primary and secondary air is incorrect. Start by having
the secondary air damper completely closed. It normally
never needs to be open more than a few millimetres (the
glass).
The chimney duct continues
downwards from the
connection to the boiler.
The turbulence formed takes away part of the draught.
Fill the underlying part with sand or similar.
No accumulator control.
A ceramic boiler burns best when the ceramics have
become warm. Therefore, it is necessary to increase the
temperature in the boiler fast before it is loaded. Add a
controller.
Ceramics incorrectly
inserted.
On a new boiler, check that the ceramics have not been
displaced during transportation. There is no reason to
remove the ceramics, not even for cleaning. However,
if they are removed, they must be replaced correctly.
Pay attention to the seal with the combustion chamber
wall.
High flue gas temperature. Tar and soot in the tubes.
Caused by incorrect combustion. Check the wood,
the draught, the supply air and the operation. Sweep
the boiler.
Bypass damper open.
Close the damper. The bypass damper must only be open
when wood is being added.
Flue gas thermometer
broken.
The thermometer may have been damaged during
sweeping or by long-term supercombustion.
Firing problems
