Riello 1311 T2, Modulating Operation, Page: 26 / 60

20040170
24
GB
Installation
5.13 Gas feeding
5.13.1 Gas feeding line
Key (Fig. 21 - Fig. 22 - Fig. 23 - Fig. 24)
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 responsability of the installer
Explosion danger due to fuel leaks in the pres-
ence of a flammable source.
Precautions: avoid knocking, attrition, sparks and
heat.
Make sure that the fuel interception tap is closed
before performing any operation on the burner.
WARNING
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
L1 L
6A
P2
7
4
P3
3 2 1
8
Fig. 21
D11854
MBC “threaded”
L L1
P2
6B
7
9
8
4
P3
3 2 1 5
11
Fig. 22
D11855
MBC “flanged”
L L1
5
6C
P2
7
3 2
1
8
10
11
9
Fig. 23
D11856
DMV “flanged or threaded”
L L1
5
6D
P2
7
3 2 1
8
10
11
9
Fig. 24
D11857
CB “flanged or threaded”