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5.9
Gas feeding
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 interception tap is closed be-
fore performing any operation on the burner.
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
WARNING
5.9.1
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 pushbutton 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
– pressure adjuster
– filter
7
Minimum gas pressure switch
8
Leak detection control, provided as an accessory or integrat-
ed, based on the gas train code. In compliance with the
EN 676 standard, the leak detection control is 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 Upline pressure of valves/adjuster
P3 Upstream pressure of the filter
L
Gas train, supplied separately
L1 The responsibility of the installer
Installation
MBC "threaded"
2
1
D11854
MBC "flanged"
4
1
2
3
P 3
L1
DMV "flanged or threaded"
1
2
3
L1
CB "flanged or threaded"
1
2
3
L1
19
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. 17
11
9
D11855
Fig. 18
6C
11
9
D11856
Fig. 19
6D
11
9
D11857
Fig. 20
20054100
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