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Installation
4
4.7
Assembly of the gas train
The gas train is type-approved according to standard EN 676 and is sup-
plied separately from the burner, with the code indicated in Appendix B.
The gas train can enter the burner from the right or left side, depending
on which is the most convenient, see Fig. 19.
The gas train must be connected to the gas attachment 1)(Fig. 19) with
the flange 2), the gasket 3) and the screws 4) supplied with the burner.
The gas solenoids must be as close as possible to the burner, to ensure
that the gas reaches the combustion head within the safety time of 3s.
Ensure that the maximum pressure to the burner is within the calibration
range of the pressure regulator.
See the accompanying instructions for the adjustment of
the gas train.
WARNING
4
1
2
3
L1
D3791
Fig. 20
The losses of load along the gas supply line are indicated in Appendix C.
9
6
7
P2
5
L
1 - Gas input pipe
2 - Manual valve
3 - Vibration damping joint
4 - Pressure gauge with pushbutton cock
P1
5 - Multibloc, including:
10
6 - Minimum gas pressure switch
8
7 - Valve leak detection control device.
11
8 - Gasket
9 - Gas adjustment butterfly valve
10 - Maximum gas pressure switch (accessory)
11 - Gas train/burner adaptor
P1- Pressure at combustion head
P2- Upstream pressure of valves/adjuster
L - Gas train supplied separately with the code
L1 - The responsibility of the installer
17
GB
- filter (replaceable)
- working valve
- pressure adjuster
In accordance with the standard EN 676, leak
detection is compulsory for burners with max-
imum outputs of more than 1200 kW.
indicated in the table on page 55.
D3839
Fig. 19
6372
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