Riello DB9 LSE C13 TC FS1 A0 Installation, Use And Maintenance Instructions page 36

5.3 Pressure switches adjustment
As the reference pressure levels cannot yet be established, before beginning setting operations, the following must be carried out
(with the burner turned off):
• open the manual valves upstream from the gas train;
• adjust the minimum gas pressure switch (Fig. 18) on the gas train, at the start of the scale;
• adjust the maximum gas pressure switch (Fig. 19), on the butterfly valve, at the end of the scale;
• adjust the air pressure switch (Fig. 20) on the burner air box, at the start of the scale.
Minimum gas pressure switch
D2214
Fig. 18
14
CHAPTER
Maximum gas pressure switch
D2213
Fig. 19
5
Preparation for start up
Air pressure switch
D2215
Fig. 20