Unigas R91, Руководство по установке

Страница: 17 / 120

PART II: INSTALLATION
17
3.0 GAS TRAIN CONNECTIONS
The diagrams show the components of the gas trai included in the delivery and which must be fitted by the installer.The diagrams are in
compliance with the current laws.
Key
3.1 Assembling the gas train
Fig. 6 - Example of gas train
To mount the gas train, proceed as follows:
1-a) in case of threaded joints: use proper seals according to the gas used;
1-b) in case of flanged joints: place a gasket (no. 1A..1E - Fig. 6) between the elements
2)
fasten all the items by means of screws, according to the diagrams showed, observing the mounting direction for each item;
NOTE: the bellows unit, the manual cutoff valve and the gaskets are not part of the standard supply.
WARNING: BEFORE EXECUTING THE CONNECTIONS TO THE GAS PIPE NETWORK, BE SURE THAT THE
MANUAL CUTOFF VALVES ARE CLOSED.
Gas train with valves group VGD with built-in gas pressure go gas leakage pressure switch (PGCP)
1 Filter 6 Butterfly valve
2 Pressure switch - PGMIN 8 Main burner
3 Safety valve with built in gas governor 9 Bellows unit(*optional)
4 Proving system pressure switch - PGCP 10 Manual valve(*optional)
5 Pressure switch - PGMAX(*optional)
ATTENTION: once the gas train is mounted according to the diagram on Fig. 6, the gas proving test mus be per-
formed, according to the procedure set by the laws in force.
GAS INLET
SUPPLIED BY BURNER
CONSTRUCTOR
BY OTHERS
1A
5
1B
4 1C
2 1D
1E
3
Keys
1A..1E Gasket
2 Gas filter
3 Gas valves group
4 Bellows unit
5 Manual valve
”direction” arrows for installation
gas supply network