PV 20a
Fuel
PV 20a uses premium wooden pellets as fuel. Wood pellets are concentrated and homogenized fuel
made from sawdust and cutter shavings. Pellets are pressed with high temperature. No extra
materials are added, pellets are held together by a natural ingredient found in wood – lignin. Pellets
are CO2-neutral, renewable fuel. Pellets must be stored in a dry and ventilated room. It is
recommended to wear a respirator when handling pellets.
Only premium class pellets can be used with PV 20a. Refilling must be carried out before the storage
runs empty. In case it happened, burner has to be restarted and the loading time can be up to 20
minutes that external auger has enough time to refill itself.
Table 2 Pellet properties
Raw material sawdust and cutter shavings
Calorific value 4700-5100 kWh/ton
Volume weight ca 650-670 kg/m
3
Volume of 1 ton 1.5-1.6 m
3
Diameter 6-10 mm
Length 3-5 x diameter
Water content 8-10 %
Ash content Ca 0.5%
To replace 1000 l light oil ca 2 tons or 3 m
3
Installation
You will need the following tools in order to install the burner:
• Spanner no. 13 for fixing the flange of the burner to the boiler
• Spanner no. 10 for connecting the body of the burner with the burning camber
• Cross-head screwdriver for fixing the cover of the burner
• 4 mm hex wrench for fixating the boiler to the flange
In order to install the burner, the boiler must correspond to the following requirements:
• The door of the boiler must have a 90 mm opening (placement opening for the oil burner).
• The thickness of the boiler door must be less than 100mm
• The construction of the boiler must make it possible to open the door of the boiler with the
burner connected and removing ash from the furnace. If the door of the boiler is too narrow
for opening it with the burner, then extra hinges must be installed.
• If there is not sufficient (less than 5Pa) negative pressure in the furnace, a draught fan should
be installed for the exhaust gases.
• The boiler room where the burner is installed must fulfill all rules and recommendations
given by authorities.
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