Unigas TLX2020 Installation Manual page 20

PART II: INSTALLATION
Once the train is installed, connect the gas valves group and pressure switches plugs.
Pilot gas train (if provided)
The connection to the pilot gas train must be done according to the following scheme, valid for LPG. In case of natural gas, connect the
pressure goveror (pos. 3) to the natural gas line (maximum input pressure = 1 bar).
1 1
The pilot gas train is already installed into the burner, the connection from the filter with stabiliser to the gas supply network must be
carried out.
Once the gas train in installed, execute the electrical connections for all its items (gas valves group, pressure switch).
DANGER! Incorrect motor rotation can seriously damage property and injure people.ATTENTION: once the gas
train is mounted according to the diagram on Fig. 3, the gas proving test mus be performed, according to the pro-
cedure set by the laws in force.
MANUFACTURER INSTALLER
2 3
4
6
5
7
L.P.G.
Fig. 3
20
Key
(1) Gas valves
(2) Minimum gas pressure switch
(3) Gas pressure governor with filter
(4) Bellow joint (*)
(5) Manual cutoff valve (*)
(6) Pressure governor (*)
(7) Tank (*)
(*) = Not supplied
Connection to the gas
supply network - 1/2"