The boiler must be operated in accordance with these instructions to ensure the quality and the secu-
re function of the boiler. The boilers are allowed to be attended only by adult persons.
During the assembly lay under the rear boiler part to 10 mm.
NOTICE
During the first firing up a condesation and a condensate outflow appears – it is no default.
In case of combustion of small waste wood the waste gas temperature must be checked – it is not
allowed to exceed 320 °C – this can cause a boiler damage.
The appearance of the tars and condensates on the fuel hopper is a normal process that accompa-
nies the wood gasification.
Firing-up and operation
Before the firing-up the firing safety valve must be opened pulling out the pull rod /17/. Set waste gas
thermostat on zero.
Through the upper door /2/ put dry small firewood on the fire resistant shaped pieces /5/ perpendicu-
lar to the channel /12/ with a gap 2 - 4 mm between the fuel and the channel because of the flue gases
passage. Then paper or woody wool and small firewood again, after this bigger amount of dry wood.
After firing-up wait for max. 8 min., then switch on the ventilator /4/ and close the firing safety valve via
its pull rod /17/. On the power regulator /22/ set the required warm water temperature. After the firing-up
fill the fuel container with wood. Set the thermostat on 100-150 °C (on the point).
For the gasification it is necessary to establish and to keep a reduction zone of glowing charcoul on
the ceramic shaped pieces in the fuel container. This condition can be reached burning dry wood of ade-
quate dimensions. If using wet wood, the boiler does not operate as a gasification boiler, the wood con-
sumption is much higher, the required power output cannot be reached and the durability of boiler and
chimney will be reduced. The specified draught of the chimney ensures the boiler nominal power 70 %
even without a ventilator.
Power regulation – electrical-mechanical
The power output is controlled with a safety valve /8/ operated with the power regulator FR 124 /22/,
which automatically opens or closes the safety valve according to a set output temperature of the water
(80 – 90 °C). When setting the power regulator, much attention should be paidn to this activity, because
the regulator has another funtion else than power regulation – it also secures the boiler against overhe-
ating.
When setting this regulator HONEYWELL type FR 124, the enclosed installation and setting-up
instructions should be followed. The protection against overheating and the regulator function should be
checked at the water temperature 90 °C. In this stage the regulating safety valve /8/ must be nearly clo-
sed. The set point of the power regulator must be checked. The valve position can be seen at the back
of the ventilator. A controlling thermostat on the boiler control panel regulates the ventilator according to
the set temperature. A temperature on the controlling thermostat is to be set by 5 °C lower than that on
the power regulator FR 124. (A point marked on the thermostat scale). The working temperature of
water must be checked on a thermometer installed on the control panel.
Filling of wood
When filling the wood into the fuel container, following steps must be done: first open the valve /13/
with its pull rod /17/ (do not switch off the exhaust ventilator). Wait ca. 10 sec. and then open slowly the
filling door /2/ in such a way, that the cumulated gases flow into the gas flue. After this the filling door can
be fully opened. The fuel container shoul be filled completely. To eleminate the smoke escape, the filling
up should be performed after the wood is burned out at least to a third. Put a large billet on the glowing
charcoal and then fill up normally to minimize immediate burning out and production of the combustion
waste products. During the heating the firing safety valve /13/ must be closed – otherwise the ventilator
can be damaged.
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