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Operation and Maintenance Manual - EN
After the second unsuccessful attempt for ignition with fuel supply the burner will proceed to the
third attempt during which the fuel is not supplied any longer, but only the ignition spiral is active.
After this unsuccessful attempt the burner will be put out of operation as the system has probably
run out of pellets or a fault has occurred.
In case of a short-term interruption of power supply to the burner, the burner will automatically
renew its operation after performing diagnostic checks, complete burning out of pellets and a
new start.
Setting the selector switch into the position for pellets with initiate the burner DIAGNOSTICS
to determine the existing boiler status (waste gas temperature, boiler temperature, temperature
inside the buffer tank).
In case the preconditions for immediate burner launch are not met, that means the boiler is at the
wood firing or burnout stage, when the magazine still contains sufficient quantity of wood,
the burner will be set into standby. The exhaust fan on the boiler will remain in operation
(provided the parameter S6 = 11, 4 has been set) to ensure proper burnout of wood.
The burner display will show the AUTOSTART message at this stage.
If the AUTOSTART message keeps flashing slowly, the precondition defined for particular
function (S34 = 1 or S34 = 2) has not been met – the wood burnout is still in progress.
If the AUTOSTART is flashing fast (wood burnout is completed), the precondition defined by
the particular function has not been met (S15 = 2), which means that the temperature TV on the
accumulation (buffer) tank has not dropped below the set value given by the parameter S16 (the
energy from the accumulation tank has not been exhausted). This condition may also occur, if the
control thermostat on boiler has not been activated or if the end limit switch on the top stoking
doors has not been pushed (no star symbol lit up at the thermostat symbol in the burner display).
Once all the preconditions for burner launch have been met (wood burnt out, accumulation tank
exhausted), it will be commissioned. The exhaust fan will not be in use during regular pellet
firing process (parameter S6 = 11).
If chimneys draught is bad, you can activate operation of the boiler‘s extraction fan together with
the pellet burner by setting parameter S6 = 4.
CAUTION - never forget to push limit switch with a push-button!
CAUTION - When you change this, you have to reset opening of the burner‘s fan flap.
INFO - This sequence has been set intentionally to ensure safe and trouble-free operation
of the burner.
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