Unigas HTP2000 Installation Manual page 17

GAS TRAIN CONNECTIONS
Referring to the P&ID of the burner, execute the connection.
WARNING: BEFORE EXECUTING THE CONNECTIONS TO THE GAS PIPE NETWORK, BE SURE THAT THE
MANUAL CUTOFF VALVES ARE CLOSED.
Assembling the gas train
"direction" arrows for installation
3
1E
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. 7) 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.
ATTENTION: once the gas train is mounted according to the diagram on Fig. 7, the gas proving test mus be per-
formed, 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).
The pilot gas train is already installed to the burner, the following connections must be executed:
connection from the filter with stabiliser to the gas supply network

1B
4
1C
2
1D
Fig. 7 - Example of gas train
17
gas supply network
1A
5
Keys
1A..1E Gasket
2 Gas filter
3 Gas valves group
4 Bellows unit
5 Manual valve
PART II: INSTALLATION