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3 For Your Safety
3.6.3 Checking Burner Sequencer Part
Check the following:
• Correct setting of time parameters (especially safety and pre-ventilation periods).
• Whether an ionisation flame sensor or a corresponding flame scanner is used since only
these are capable of running in continuous operation.
• Functioning of flame sensor in case of flame blow-off during operation, parasitic light being
present during pre-ventilation period and missing flame formation at the end of the safety-
period.
• Check the performance of all available and/or essential incomming signals, such as for:
– Air pressure
– Gas pressure - min/oil pressure - min
– Safety interlock chain (e.g. STB)
• Activated Leakage control function for gas valves if required for application purposes.
– If necessary, ensure a correct leakage quantification.
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