This example shows a sequence that begins with natural gas, then switches to natural gas/biogas simultaneous firing and then switches to biogas single operation.
Operation modes
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[M1] Natural gas
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[M2] Biogas
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[M5] Natural gas/biogas
Sequence
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It is always started in "Natural gas".
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As soon as the burner exceeds the capacity of 20%, the switch to "Natural gas/biogas" is released.
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The switch to "Natural gas/biogas" is completed as soon as the "Biogas pressure" exceeds 150 mbar.
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If "Biogas pressure" falls below 100 mbar during simultaneous firing, the system switches back to natural gas.
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If "Biogas pressure" exceeds 220 mbar during simultaneous firing, the system switches to "Biogas".
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If "Biogas pressure" falls below 180 mbar during "Biogas", the system switches back to "Natural gas/biogas" simultaneous firing.