ARITERM SWEDEN AB Installation, Operation & Maintenance - 2009.02.18- 22/32
Pellet fuel can be manufactured from several dierent biologically derived raw materi-
als. Most common is wood, but today there are several alternative materials available
on the market that are suitable for pellets manufacture.
ese raw materials have various characteristics that can be advantageous or disadvan-
tageous for pelletised fuel. Important factors that can be assessed are energy content,
size, amount of nes, moisture content and, last but not least, the price. We recom-
mend that you choose the fuel that has the lowest cost per energy unit after checking
how the fuel performs in the burner. Study carefully the fuel performance after new
delivery. In case of doubt, please contact us at Ariterm.
Most of the problems that arise on account of inferior fuel quality are the result of
inadequate handling and storage before the fuel reaches the end customer.
If the fuel has high nes content the problem is usually due to separation
during storage or loading. e formation of sintered ash is due to silicate contami-
nants (sand). eses cannot be discovered before they are used. If you get pellets that
produce sintered ash, a claim must immediately be sent to the pellet supplier.
ATTENTION! If sintered ash is formed, the burn pot must be continuously cleaned of
sintered material (with a table spoon for example).
Damp pellets can be the result of inadequate handling and transport. If possible,
inspect the pellets before they are unloaded to make sure that you get clean and dry
pellets and no nes.
ATTENTION! Damp pellets must be rejected immediately.
ADVICE ABOUT FUEL PELLETS
FUEL RECOMMENDATION
Raw material Chemically untreated barkless wood
Diameter 8 mm
Length 15 to 32 mm
Volume weight over 600 kg/m
3
Moisture content less than 10 %
Ash content less than 0.7 weight %
Fine material content max 4 weight %
Melting temperature of ash
>
1100 °C
Energy content
>
4,75 kWh/kg
is boiler manufactured by Ariterm AB is guaranteed to be free of defects in work-
manship and materials for a period of 24 months (2 years) from the date of installa-
tion. e manufacturer shall not be held liable for faults caused by incorrect installa-
tion, incorrect use, freezing, over-temperature or over-pressure. Any attempts made
to repair the product without the manufacturer’s permission or if the guarantee card
has not been returned to the manufacturer, will invalidate the guarantee. e manu-
facturer shall not be held liable for any possible indirect damage and/or nancial loss
caused by the burner.
Ariterm AB reserves the right to decide the method how a possible guarantee repair is
carried out. Ariterm AB is not liable for damages occurred after the expiration of the
guarantee period, but compensation for such incidents may be agreed upon separately
case by case.
Storage planning
When planning the pellet store you should keep in mind that you cannot use the
same feeding system for a store designed for a day’s or a week’s supply as for a store
designed for bulk deliveries. A common way is to start with a small and simple pellet
store which is a quick and simple solution. It demands a bit of handling however, both
when you pick up the pellets from your supplier and when you ll them into your
store. For this kind of store, pellets can be acquired in small sacks (normally between
6-20 kg) or large sacks (normally between 500-1000 kg).
e very best solution for a convenient and simple handling of pellets however is
to install a pellet store designed to accommodate pellets delivered by bulk tanker. is
delivery method will demand a store of some 6 m
3
to accommodate 3 tons which is
the normal volume at bulk deliveries.
e pellet store should be designed to eliminate the risk of contamination and
moisture penetration. Take special care to avoid damp penetration through the walls
and oor. It is also important that pellets are not exposed to direct contact with water
in the form of rain or condensation. Pellets do not however absorb moisture from
surrounding moist air and can therefore be stored outdoors as long as they are under
cover. e fuel store should be planned according to your estimated consumption so
that relling and handling takes place at convenient intervals.
GUARANTEE / STORAGE PLANNING
To Next Page
Loading...
