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Contents
6.5.4 Number of resettable start-ups......................................................................................................................................38
6.5.5 Total number of start-ups ..............................................................................................................................................39
6.5.6 End of the Info level.......................................................................................................................................................39
6.6 Service level ..................................................................................................................................................................40
6.6.1 Displaying the Service values .......................................................................................................................................41
6.7 Parameters level ...........................................................................................................................................................42
6.7.1 Entering the password...................................................................................................................................................43
6.7.2 Backup ..........................................................................................................................................................................44
6.7.3 Restore..........................................................................................................................................................................45
6.8 Parameter modes of operation......................................................................................................................................47
6.8.1 Parameters without index, with direct display ...............................................................................................................47
6.8.2 Parameters without index, without direct display ..........................................................................................................48
6.8.3 Parameters with index, with or without direct display....................................................................................................50
7 Start-up, calibration and operation of the burner ..................................................................................................................52
7.1 Notes on safety for the first start-up ..............................................................................................................................52
7.2 Adjustments prior to ignition ..........................................................................................................................................52
7.3 Fan adjustment..............................................................................................................................................................52
7.4 Pre-setting of the points P0 (ignition), P1 (minimum) and P2 (maximum).....................................................................53
7.5 Burner start-up ..............................................................................................................................................................54
7.5.1 First burner start-up (manual operation)........................................................................................................................54
7.5.2 Checking the modulating operation (automatic operation)............................................................................................55
7.6 Combustion head ..........................................................................................................................................................56
7.7 Burner adjustment .........................................................................................................................................................57
7.7.1 Indicative calibration values ..........................................................................................................................................57
7.8 Switching off the burner.................................................................................................................................................57
7.9 Load controller inputs ....................................................................................................................................................57
7.10 Final checks (with burner operating) .............................................................................................................................58
8 Maintenance ..............................................................................................................................................................................59
8.1 Notes on safety for the maintenance.............................................................................................................................59
8.2 Maintenance programme ..............................................................................................................................................59
8.2.1 Maintenance frequency.................................................................................................................................................59
8.2.2 Safety test - with gas ball valve closed..........................................................................................................................59
8.2.3 Checking and cleaning ..................................................................................................................................................59
8.2.4 Safety components........................................................................................................................................................60
8.3 Opening and closing the burner ....................................................................................................................................60
8.4 Recommended preventive maintenance programme ...................................................................................................61
9 Operation, indications, diagnostic ..........................................................................................................................................62
9.1 Control sequence in the event of a fault........................................................................................................................62
9.2 List of error codes with operation using AZL21... Display ...................................................................
..........................63
9.3 Resetting of burner control ............................................................................................................................................64
9.3.1 Diagnostics of the cause of the fault .............................................................................................................................64
9.3.2 Before starting with a new program module or when the program module is replaced.................................................65
9.4 Manual reset..................................................................................................................................................................66
9.4.1 Error during the reset process.......................................................................................................................................67
9.4.2 Reset.............................................................................................................................................................................67
10 List of parameters PME71.901... ..............................................................................................................................................68
A Appendix - Accessories ...........................................................................................................................................................71
B Appendix - Electrical panel layout...........................................................................................................................................72