Riello DB 4 SE FGR Installation, Use And Maintenance Instructions page 38

5.7 Combustion air adjustment ........................................................................................................................................26
5.8 Air / gas adjustment and output modulation...............................................................................................................26
5.9 FGR commissioning...................................................................................................................................................27
5.10 Pressure switch adjustment .......................................................................................................................................28
5.10.1 Air pressure switch.....................................................................................................................................................28
5.10.2 Maximum gas pressure switch...................................................................................................................................28
5.10.3 Minimum gas pressure switch....................................................................................................................................28
5.11 Final checks (with burner operating) ..........................................................................................................................29
6 Maintenance ..............................................................................................................................................................................30
6.1 Notes on safety for the maintenance .........................................................................................................................30
6.2 Maintenance programme ...........................................................................................................................................30
6.2.1 Maintenance frequency..............................................................................................................................................30
6.2.2 Safety test - with gas ball valve closed ......................................................................................................................30
6.2.3 Checking and cleaning...............................................................................................................................................30
6.2.4 Dismantling the flame sensor.....................................................................................................................................31
6.2.5 Safety components ....................................................................................................................................................31
6.3 Opening the burner ....................................................................................................................................................31
6.4 Closing the burner......................................................................................................................................................31
7 Faults - Possible causes - Solutions.......................................................................................................................................32
A Appendix - Electrical panel layout...........................................................................................................................................34
20169009
Contents
2
GB