Riello RS 68/EV O2 BLU Installation, Use And Maintenance Instructions page 4

6.4 Burner adjustment......................................................................................................................................................33
6.4.1 Firing output ...............................................................................................................................................................33
6.4.2 Maximum output ........................................................................................................................................................33
6.4.3 Minimum output .........................................................................................................................................................33
6.5 Final calibration of the pressure switches ..................................................................................................................34
6.5.1 Air pressure switch.....................................................................................................................................................34
6.5.2 Maximum gas pressure switch...................................................................................................................................34
6.5.3 Minimum gas pressure switch....................................................................................................................................35
6.5.4 PVP pressure switch kit .............................................................................................................................................35
6.6 Steady-state operation ...............................................................................................................................................35
6.7 Ignition failure.............................................................................................................................................................35
6.8 Burner flame goes out during operation.....................................................................................................................35
6.9 Stopping of the burner ...............................................................................................................................................36
6.10 Final checks (with burner operating) ..........................................................................................................................36
6.11 Description of O2 trim control (optional) ...................................................................................................................37
6.11.1 Operating principle of O2 trim control ........................................................................................................................37
7 Maintenance ..............................................................................................................................................................................38
7.1 Notes on safety for the maintenance .........................................................................................................................38
7.2 Maintenance programme ...........................................................................................................................................38
7.2.1 Maintenance frequency..............................................................................................................................................38
7.2.2 Safety test - with gas feeding closed .........................................................................................................................38
7.2.3 Checking and cleaning...............................................................................................................................................38
7.2.4 Measuring the ionisation current ................................................................................................................................39
7.2.5 Checking the air and gas pressure on the combustion head .....................................................................................39
7.2.6 Safety components ....................................................................................................................................................39
7.3 Opening the burner ....................................................................................................................................................40
7.4 Closing the burner......................................................................................................................................................40
A Appendix - Accessories ...........................................................................................................................................................41
B Appendix - Electrical panel layout...........................................................................................................................................43
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