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A boiler room with solid fuel automatic boiler requires periodic supervision.
During boiler operation certain daily activities must be performed, to prevent
emergency situations.
When fuel is loaded into the hopper, it should be ensured that the fuel does
not contain any large pieces of coal, and in particular stones, which may block
the feeder!
The controller settings must be adjusted according to current temperatures
outside and quality of burned fuel. Setting parameters should be selected (moni-
toring fire condition and appearance in the furnace).
In the automated mode the controller measures the temperature of water in
the boiler, and uses the results to control work of the fuel feeder and the blower
fan according to previously selected settings optimum for a given fuel type. De-
pending on the weather conditions, burning intensity and the boiler heat output
should be adjusted according to changing conditions, regulating a temperature
of water leaving the boiler (or, when the three- or four-way valve is installed, by
changing settings of the control shutter).
At the same time the controller controls operation of pumps: central heating,
domestic hot water, floor and circulation (if the heating system is equipped with
pumps).
Regularly - at least once a day - open the furnace door and check the flame
condition (furnace appearance). When any deviations are noticed, adjust the bo-
iler operation (see Chapter 11 "Statuses of incorrect boiler work").
In the central heating system, the heat demand changes with changes in the
external conditions, i.e., time of the day and changes in the temperature outside.
The temperature of water leaving the boiler also depends on the building energy
performance, i.e., on construction materials, particularly insulation, used for its
construction.
When the fire in the boiler is extinguished, clean the furnace and air the boiler
ducts during firing, and restart firing.
During firing smoke can penetrate into the boiler room or retting (sweating)
of the boiler. When the boiler and the flue pipe are warmed these adverse effects
should be reversed.
The boiler can stop when there is no fuel in the hopper or the feeder is blocked
with undesirable hard objects, stones, etc.
For economic fuel consumption and to obtain declared boiler output and heat
effectiveness, it is necessary to maintain required cleanness of the burner furnace
space and the exchanger convection ducts.
The convection ducts, in which air-born ash is deposited, should be regularly
cleaned, every 3÷7 days. Relevant tools delivered with the boiler should be used
8.3. BOILER CLEANING
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