5. Maintenance of the heating system incl. boiler
The water in the heating system must be check and if necessary refilled at least once in 14 days. If the
boiler is out of operation during the winter, the water in the system could freeze. Therefore it is better to
drain the water off or to fill the heating system with an antifreezing solution. The water should be drained
off only if necessary and just for a very short time. When the heating season ends, the boiler must be
cleaned properly and damaged part are to change.
Twice a year dismantle the ventilator and clean the ventilator runner and the air chamber.
6. Fuel
The specified fuel is: dry wood billets and blocks with a diameter between 80 – 150 mm minimal
2 years old. The moisture 12 - 20 %. The length od the billets should be 330 – 1000 mm and the caloric
value 15 – 17 MJ.kg. The fuel dimenstions are stated in the article 2 „Technical data“. It is also possible
to burn large waste wood pieces together with wood billets.
7. Chimney
The connection of the boiler to the chimney flue must be carried out with agreement of an authorized
chimney-sweeping firm. The draught of the chimney must be for all operation types sufficient to draw off
the combustion gases into the free atmosphere.
It it necessary for the proper boiler function, that the chimney hole has the right dimension, because
the combustion, power output and boiler durability depend on the chimney draught. The chimney
draught depends directly on the section, high and on the surface roughness of the inside chimney wall.
It is not allowed to connect another appliances into the chimney used for the boiler.
The chimney diameter cannot be smaller as the flue hole on the boiler.
Recommended dimensions of the chimney:
20 x 20 cm min. high 7 m
diameter 20 cm min. high 8 m
15 x 15 cm min. high 11 m
diameter 16 cm min. high 12 m
The exact chimney dimension are stated in the standard DIN 1056.
The specified chimney draught is stated in the article 2 „Technical data“.
8
Maximum amount of ash is up to the level of the roof upper edge!
ASH
CERAMICS
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