Gas Supply; Gas Feeding Line - Riello GAS 8 P/M Installation, Use And Maintenance Instructions

5.8

Gas supply

Explosion danger due to fuel leaks in the pres-
ence of a flammable source.
Precautions: avoid knocking, attrition, sparks and
heat.
Make sure the fuel shut-off valve is closed before
performing any operation on the burner.
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
WARNING
5.8.1

Gas feeding line

Key (Fig. 17 - Fig. 18 - Fig. 19 - Fig. 20)
1 Gas input pipe
2 Manual valve
3 Vibration damping joint
4 Pressure gauge with button cock
5 Filter
6A Includes:
– filter
– working valve
– safety valve
– pressure adjuster
6B Includes:
– working valve
– safety valve
– pressure adjuster
6C Includes:
– safety valve
– working valve
6D Includes:
– safety valve
– working valve
7 Minimum gas pressure switch
8 Leak detection control, supplied as an accessory or built-in,
based on the gas train code. In compliance with the EN 676
standard, gas valve leak detection control devices are com-
pulsory for burners with maximum outputs over 1200 kW.
9 Gasket, for "flanged" versions only
10 Pressure adjuster
The train-burner adaptor is supplied separately
P2 Pressure upstream of valves/adjuster
P3 Pressure upstream of the filter
L Gas train, supplied separately
L1 Responsibility of the installer
Installation
MBC "threaded"
1 2
D11854
MBC "flanged"-VGD
20065706
DMV "flanged or threaded"
20065609
CB "flanged or threaded"
20065707
21 GB
7
8
4
P 2
3
6A
P 3
L1 L
Fig. 17
Fig. 18
Fig. 19
Fig. 20
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