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For the correct operation and efficient working of your wood pellet boiler system
TR Engineering Ltd recommend that only pellets that conform to European-wide CEN TS
14961 standard are used with their products. The system settings are for the use of 6mm
pellets only.
It is the responsibility of the Customer to ensure that only a quality grade pellet is used for
the appliance.
Issues arising for poor quality pellet and which necessitates a visit by a Technician is not
covered under warranty and a call out charge will apply.
If you change your fuel brand or supplier contact your local servicing / commissioning
engineer (or TR Engineering Ltd) for guidance on whether the burner needs to be adjusted.
Pellets must be stored in a dry and well ventilated storage area free from moisture.
Incorrect storage of pellets may degrade the pellet quality and may affect the performance
of the burner.
In cases where the pellets appear to have a high fines/dust content the auger system may
need to be cleaned periodically to maintain the correct feed rate of pellets to the system.
Some pellet brands may require the burner to be cleaned at regular intervals to remove
any residues which may be left behind.
Wood fuels that conform to the European-wide CEN standard means that the product is of
the highest quality and that the consumer can have every confidence in choosing wood
heating. CEN, the European Committee for Standardisation, established a Technical
Committee to define standards for solid biofuels.
Recommended Specification for Wood Pellets for Domestic Heating:
Origin: Chemically untreated wood without bark
Moisture content: ≤10 %
Dimensions: ≤ 6 mm ± 0.5 mm and L ≤ 5 x Diameter or ≤ 8 mm ± 0.5 mm, and L ≤ 4 x
Diameter
Ash content: ≤ 0.7%
Sulphur content: ≤ 0.05 %
Mechanical durability: 97.5% after testing
Amount of fines: ≤ 2.0 %
Additives: < 2 w-% of dry basis
Energy density: Min. 4.7 kWh/kg.
EU Standards : CEN TS 14961
Austria: ÖNORM M1735
Sweden: SS 187120 and SS 187121
Germany: DIN 51731
12. Fuel
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