ASSEMBLING THE GAS TRAIN
The EN 676 approved gas train is sold separately from the burner.
The gas train can be assembled in different ways: A and B. Choose
the most rational position for the set-up of the boiler room and the
position in which the gas pipe arrives.
Diagram iLLUsTraTing gas Train PrinCiPLe
Install a manual on/off valve upstream of the gas valve
according to the layout shown in the diagram illustrating the
gas train principle.
To ensure optimal functioning of the pressure control, it should
be applied to the horizontal pipe after the filter. The gas pressure
regulator must be adjusted while operating at the maximum flow
effectively used by the burner. The outgoing pressure must be
adjusted to a value slightly below the maximum possible value
(the value obtained by screwing in the adjustment screw almost
completely); in this case, the outgoing regulator pressure increases
as the adjustment screw is tightened, and decreases as it is
slackened.
BasiC Diagram Of BUrner sUPPLY Line
TO BE MADE BY
THE INSTALLER
GAS TRAIN SUPPLIED BY THE MANUFACTURER
1
Air regulation servomotor
2
Air pressure switch
3
Maximum gas pressure switch
4
Gas supply modulating control butterfly valve
5
Gas valves for main flame with pressure regulator
6
Valve seal control device (integrated in the equipment)
7
Safety gas valve
8
Minimum pressure switch and gas leak control.
9
Gas filter
10 Vibration-proof joint (not included in supply)
11 Manual shut-off valve (not included in supply)
12 Air/gas adjustment servomotor
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