24
GAS TRAIN CONNECTIONS
This paragraph shows the gas train components which are included in the delivery and those which must be fitted by the customer. The
diagram complies with regulations in force
Key
1 Burner
2 Butterfly valve
4 High gas pressure switch (option*)
5 Low gas pressure switch
7 Bellows unit
8 Manual cutoff valve
9 Dungs MB-DLE valves group
16 Gas leakage pressure switch
* Note: the maximum gas pressure switch can be mounted either upstream or downstream the gas valve but upstream the butterfly
gas valve (see item no.4 in the scheme above).
To mount the gas train, proceed as follows:
1)
in case of threaded joints: use proper seals according to the gas used;
2)
fasten all the items by means of screws, according to the next diagrams, observing the mounting direction for each item.
NOTE:
the bellow joint, the manual cock and the gaskets are not part of the standard supply.
The procedures of installation fo the gas valves are showed in the next paragraph.
ATTENTION:
BEFORE EXECUTING THE CONNECTIONS TO THE GAS PIPE NETWORK, BE SURE THAT THE
MANUAL CUTOFF VALVES ARE CLOSED. READ CAREFULLY THE “WARNINGS” CHAPTER AT THE BEGINNING
OF THIS MANUAL.
Gas train with valves group MB-DLE (2 gas pressure governor) + VPS504 gas proving system
ATTENTION:
once the gas train is mounted according to the diagram, the gas proving test mus be performed, according to
the procedure set by the laws in force.
ATTENTION:
it is recommended to mount filter and gas valves to avoid that extraneous material drops inside the valves,
during maintenance and cleaning operation of the filters (both the filters outside the valves group and the ones built-in the
gas valves).
1
2
5
7
8
9
4
16
4
MANUFACTURER
INSTALLER
