ARITERM AB
•
ARITERM OY
Installation and operating instruction • Version 2.0 • 12.04.2017
28/32
5P01781-A / 5P01781-B
Wood pellets are renewable bioenergy and provide fuel in a compact and uniform form,
which is easy to handle. The moisture content is less than 10%, which means that the pellets
do not freeze or become mouldy. No chemical substances are used in the manufacturing
process. Instead, the binding agent is the lignin of the wood.
The pellet diameter normally range from 6 to 8 mm and the length from 10 to 30 mm.
Due to their small size, the pellets move freely in the feeding augers.
NOTE!
The Ariterm Bi series boilers are suitable for burning pellets of diameters
ranging from 6 mm through to 8 mm. The burner is factory set for 6 mm wood pellet.
Most of the disturbances that occur as a result of bad fuel quality are caused by incorrect
handling and intermediate storage of the pellets prior to that it is delivered to the customer.
Large contents of fine materials in the pellet supply may be due to insufficient sifting.
Ash sintering is often caused by silicate impurities (sand). These materials cannot be
detected before burning.
NOTE!
If the ash is sintered, all sintered material must be continuously removed from the
burner head.
Fuel storage
Optional to the B 20
i
/40
i
is a close coupled 450l storage. Due to the internal feeding
system of the B 20
i
/40
i
it is also possible feed the direct from a bulk storage.
The storage can be placed either inside or in a separate building outside the house.
Generally, the shorter the transport distance from the storage to the burner, the better
the feeding system will function. Local building and fire regulations must be taken into
consideration when designing the boiler room and the storage area.
The entire storage must be insulated with extreme caution in order to prevent dust from
spreading.
Pellet delivery methods is recommended to be taken into account when deciding on
storage size. In general, pellets can be obtained in small bags (app. 20 kg), large bags
(app. 500 kg) or by bulk delivery, blown into the storage. One ton of pellet requires
about 1.6 cubic meter of storage space.
NOTE!
Pellet should be stored in a dry place.
WOOD PELLETS AS FUEL
Fuel recommendation
Raw material
Chemically untreated, barkless wood
Diameter
6-8 mm
Length
10-30 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 %
Ash melting temperature
> 1,100 ˚C
Energy content
>4.75 kWh/kg
