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with the gap of 2–4 cm and lay splinters or wood wool and paper on it. Continue with 2 layers of
thin dry wood and complete it with the standard firewood. Turn the exhaust fan on and after the
wood is ignited, let the feeding door open for approximately 15 mm. Use the output regulator to
set the required water temperature (80–90 °C). When the fire is strong enough (after
approximately 10 minutes), close the feeding door. Set the flue gas thermostat to the operating
temperature (white mark upwards, approximately 90° to the right from the zero position – it
depends on the flue gas temperature required to stop the boiler after the fuel burns out).
WARNING: The pull rod of the heat up flap has to be pushed backwards to close the
heat up flap. Otherwise the fan could get damaged.
For wood gasification in the boiler it is necessary to keep the reduction layer during the
operation (the layer of wood coal on the nozzle in the feeding chamber). Therefore it is
necessary to burn dry wood of a suitable size. When the wet wood is burned, the boiler does not
work as a wood gasifying boiler, the wood consumption rises, the output is not sufficient and
service life of the boiler and of the chimney is shortened.
When there is a prescribed chimney draught, the boiler works up to 70 % of its output even
without the fan.
Electromechanical boiler regulation
The boiler is regulated by the boiler thermostat placed on a boiler panel which controls the fan
according to the adjusted output temperature of water. The required operating boiler
temperature should be set on the boiler thermostat. The flue gas thermostat placed on a panel
serves to stop the fan after the fuel burns out. Set the flue gas thermostat to “0 °C” when heating
up. When the fire is sufficient, set it to the operating position to let the fan run and to stop it after
the fuel burns out. The optimal position of the flue gas thermostat has to be found by
experience, adequately to the fuel used, chimney draught and other conditions. The output
temperature of water is indicated on thermo-manometer. The irreversible safety thermostat is
also placed on the front panel (the STANDARD and LAMBDA version).
Refilling the fuel
When refilling the fuel, open the feeding door. The heat up flap is opened at the same time. Do
not stop the fan. Always keep the feeding chamber full when heating up. Not to let the smoke
flow into the boiler room, refill the fuel after it is burned to approximately 1/3 of the feeding
chamber. Cover the glowing coal with a wide wood log and refill the fuel normally. Do not press
the fuel on the nozzle, otherwise it could get clogged and the parameters of burning would be
worse.