Gas Supply; Gas Feeding Line - Riello RLS 70 Manual

5.12

Gas supply

Explosion danger due to fuel leaks in the
presence 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.
ATTENTION

5.12.1 Gas feeding line

Key (Fig. 24 - Fig. 25 - Fig. 26 - Fig. 27)
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
compulsory for burners with maximum outputs over 1200
kW.
9 Gasket, for "flanged" versions only
10 Pressure adjuster
11 Train-burner adaptor, 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
4
1 2 3
P 3
L1
DMV "flanged or threaded"
1 2 3
L1
CB "flanged or threaded"
3
1 2
L1
25 GB
7
8
4
P 2
3
6A
P 3
L1 L
7
8
P 2 6B
5
L
8
7
P 2
5
10
L
8
7
P 2
5
10
L
Fig. 24
11
9
D11855
Fig. 25
6C
11
9
D11856
Fig. 26
6D
11
9
D11857
Fig. 27
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