PELLET STOKER KMP PX22
6G>I:GBHL:9:C67
Installation Instructions -
2010.06.22 - 4/16
Pellet hopper and pellet transportation
Ariterm has several different solutions for bulk and weekly supplies as well as
transportation augers. Each model is designed to work with Ariterm burners,
and provide the best possible conditions for trouble-free operation. The burner’s
function is not guaranteed in combination with other solutions. For long distances
between hoppers and burners a horizontal auger transporter is available that
can be combined to create very long lengths.
The combustion chamber
Clearance between the top of the stoker and the inside of the combustion
chamber is to be minimum 50 mm, and at least 200 mm in front of the aperture.
An adapter plate with an extenson is optional extra (the burner need not slide into
the flange completely). Minimum clearance beneath the stoker is depending on the
type of boiler, there has to be space for ashes generated during at least one week
of operation.
The Chimney
The burner must be installed in such a way that variations in the draft conditions
do not affect the burner’s performance. This is most easily achieved by installing
a correctly dimensioned draft inhibitor.
If the flue gas temperature is too low there is a risk of condensation, wich may
cause seizing or frost erosion of the upper part of the chimney.
Try to attain a flue temperature of minimum 180˚C after the boiler. A more accurate
method is to measure the temperature circa one metre down from the top of the
chimney. If temperature exceeds 60˚C there is little risk of condensation.
If lower temperature, measures have to be taken. Also look for signs of dampness
in the lower parts of the chimney. If so, the flue gas temperature has to be rizen.
If there is only a small amount of moisture in the upper part, installation of a
draught pass might be sufficient. Alternatively the stoker can be run only in full
power mode.
If large amounts of moisture appears, installation of a stainless steel insert tube
is the best solution.
If the draught in the chimney (burner reacently stopped) is graeter than 20 Pa,
you have to install a draught pass. This should be set to 12-15 Pa.
Is the boiler suitable
The PX22 stoker can successfully be installed in virtually any boiler on the market.
It´s important that the cumbustion room is big enough to accomodate the flame
without it touching any watercooled areas. There also has to be ample room for
the ashes produced by the stoker. The flue tubes has to be sufficently big not to
be blocked by ashes.
Wood boilers have the advantage of being roomy inside, and is often easier to
clean, but most oil boilers are also suitable for PX22. If the stoker is to be installed
in a combined wood and oil boiler, first find out if there is a big difference in stated
output between oil and wood. If the difference is less than 10 kW the stoker
should be placed in the wood hatchet if it can be opened with the stoker in situ.
Small kitchen boilers are often too small to be suitable.
Installation in a boiler with high output (>40 kW) can result in too low flue
temperature (see section Chimney).
Keep an alternative source of energy (electricity, wood or oil) in parallel
with the pellet stoker.
