Unigas C70N US Manual Of Installation - Use - Maintenance page 22

ELECTRICAL CONNECTIONS
Any cable connection or hook-up to the grid must be carried out by qualified, informed and trained personnel, directly coor-
dinated and authorized by Technical Service. Always check in advance that the system electrical interlock is fitted with a
safety circuit breaker.The installation must be built in accordance with the regulations in force and comply with basic safety
rules.
See the wiring diagram for more information.
WARNING: It is possible that some components are still live despite being disconnected from the mains and can cause
electric shocks.
WARNING: ! 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.
Note on electrical supply
WARNING:
The implant must have / in the implant there must be:
Have earthing connected to the burner; always check the connection, functionality and health and safety compliance of

the earthing cable beforehand. If in doubt, request a thorough check by qualified technical personnel.
Do not use foreign masses (e.g. fuel lines, metal structures...) to connect the burner to earth.

When connecting the power wires to the burner's MA terminal block, ensure that the earth wire is longer than the phase

and neutral wires.
Do not reverse the phase and neutral connections.

Provide an omnipolar switch-disconnector and a residual current circuit breaker, circuit breaker or fuses on the electrical

supply line to the burner.
Always check the protection of the mains system against overcurrents and electromagnetic interference as a preventive

measure.
Check that the voltage for which the system and the burner motors are designed corresponds to the mains voltage (+/-

10%).
Before carrying out any work on the machine's electrical panel, open the system's omnipolar switch disconnector and

turn the switch on the burner's electrical panel OFF.
In any case:
Provide adequately protected and safe mains supply and mains/burner tracing cables, with flame-proof electric cable of a

cross-section suitable for the installed power;
Absolutely avoid the use of extension cords, adapters or power strips;

In the case where the power supply of the AUXILIARIES of the phase-phase burner (without a neutral), for the flame detection it is ne-
cessary to connect the RC circuit Siemens between the terminal 2 (terminal X3-04-4 in case of LMV2x, LMV3x, LMV5x, LME7x) of the
base and the earth terminal, RC466890660. For LMV5 control box, please refer to the clabeling recommendations avaible on the Sie-
mens CD attached to the burner
Key
C - Capacitor (22 nF , 250 V)
LME / LMV - Siemens control box
R - Resistor (1 MΩ)
M: Terminal 2 (LGB, LME), Terminal X3-04-4 ( LMV2x, LMV3x,
LMV5, LME7x)
RC466890660 - RC Siemens filter
PART III: INSTALLATION
LMV2/3... - LMV5...
M
22