Riello DB 16 SM C01 TC A0 FS1 T250 Installation, Use And Maintenance Instructions page 31

4.2 General gas supply layout (example)
Fig. 14
D3897
Key
BP Pilot burner
C Anti-vibration joint
GF Gas filter
HPG High gas pressure regulator
LPG Low gas pressure regulator
MM Pressure gauge
PA Minimum air pressure switch
PCV Gas pressure regulator
PGM Maximum gas pressure switch
4
CHAPTER
PGm Minimum gas pressure switch
RG Gas butterfly valve
SRV Pressure limiting valve with outlet into the environment
VE Fan
VP Pilot solenoid valves
VPS Leak detection control device
VR Gas pressure regulator solenoid valve
VS Gas safety solenoid valve
Fuel supply
max. 500 mbar
0,5 ÷ 4 bar
11