Riello RRS 68/E O2 BLU Installation, Use And Maintenance Instructions page 4

6.4.2 Maximum output ........................................................................................................................................................30
6.4.3 Minimum output .........................................................................................................................................................30
6.5 Final calibration of the pressure switches ..................................................................................................................31
6.5.1 Air pressure switch.....................................................................................................................................................31
6.5.2 Maximum gas pressure switch...................................................................................................................................31
6.5.3 Minimum gas pressure switch....................................................................................................................................32
6.5.4 PVP pressure switch kit .............................................................................................................................................32
6.6 Steady-state operation ...............................................................................................................................................32
6.7 Ignition failure.............................................................................................................................................................32
6.8 Burner flame goes out during operation.....................................................................................................................32
6.9 Stopping of the burner ...............................................................................................................................................33
6.10 Final checks (with burner operating) ..........................................................................................................................33
6.11 Description of O2 trim control (optional) ...................................................................................................................34
6.11.1 Operating principle of O2 trim control ........................................................................................................................34
7 Maintenance ..............................................................................................................................................................................35
7.1 Notes on safety for the maintenance .........................................................................................................................35
7.2 Maintenance programme ...........................................................................................................................................35
7.2.1 Maintenance frequency..............................................................................................................................................35
7.2.2 Safety test - with gas feeding closed .........................................................................................................................35
7.2.3 Checking and cleaning...............................................................................................................................................35
7.2.4 Measuring the ionisation current ................................................................................................................................36
7.2.5 Checking the air and gas pressure on the combustion head .....................................................................................36
7.2.6 Safety components ....................................................................................................................................................36
7.3 Opening the burner ....................................................................................................................................................37
7.4 Closing the burner......................................................................................................................................................37
A Appendix - Accessories ...........................................................................................................................................................38
B Appendix - Electrical panel layout...........................................................................................................................................40
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