Riello DB 3 SM C01 TC A180 FS1 T250 Installation, Use And Maintenance Instructions page 32

Industrial gas burners
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4
Fuel supply
4.1
General gas supply layout (example)
20064734
Fig. 15
Key to lay-out
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
12
PGm Minimum gas pressure switch
RG
Gas butterfly valve
RGm Methane gas butterfly valve
SRV
Pressure limiting valve with outlet into the environment
VE
Fan
VP
Pilot valve
VPS
Leak detection control device
VR
Gas pressure regulator solenoid valve
VS
Gas safety solenoid valve
max. 500 mbar
max. 500 mbar

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