C.I.B. UNIGAS
- M03956CR
18
Once the train is installed, connect the gas valves group and pressure switches plugs.
Electrical connections
z
Remove the cover of the burner electrical board.
z
Execute the electrical connections to the supply terminal board as shown in Fig. 21, check the direction of the fan motor (see rela-
ted paragraph) and refit the panel cover.
Wiring diagram keys on page 42.
Note on elecrtical supply
If the power supply to the burner is 230V three-phase or 230V phase-phase (without a neutral), with the Siemens LME2... control box,
between the terminal 2 on the board and the earth terminal, an RC Siemens RC466890660 filter must be inserted.
Key
C - Capacitor (22nF/250V)
LME - Siemens control box
R - Resistor (1Mohm)
RC466890660 - RC Siemens filter
Fig. 19
ATTENTION:
once the gas train is mounted according to the diagrams shown in the previous pages, the gas proving test
mus be performed, according to the procedure set by the laws in force.
Respect the basic safety rules. make sure of the connection to the earthing system. do not reverse the phase and
neutral connections. fit a differential thermal magnet switch adequate for connection to the mains.
ATTENTION: before executing the electrical connections, pay attention to turn the plant’s switch to OFF and be
sure that the burner’s main switch is in 0 position (OFF) too. Read carefully the chapter “WARNINGS”, and the
“Electrical connections” section.
WARNING: The burner is provided with a jumper between terminals 6 and 7; in the event of connecting the high/
low flame thermostat remove this jumper before connecting the thermostat.
IMPORTANT: while connecting electric supply wires to burner’s teminal block be sure that ground wire should be
longer than phase and neutral ones.
WARNING: if the cable that connects the thermostats and the control box should be longer than 3 meters, insert a
sectioning relay following the attached electrical wiring diagram.
