PART II: INSTALLATION
19
ELECTRICAL CONNECTIONS
To execute the electrical connections, proceed as follows:
1
execute the electrical connections to the supply terminal board as shown in the attached wiring diagrams;
2
check the direction of the fan motor (see next paragraph);
3
do not reverse phase with neutral
4
ensure burner is properly earthed
5
refer to the attached document “RECOMMENDATIONS FOR LMV5x CONNECTIONS”
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 control box, between
the terminal 2 (terminal X3-04-4 in case of LMV2x, LMV3x, LMV5x, LME7x) on the board and the earth terminal, an RC Siemens
RC466890660 filter must be inserted.
For LMV5 control box, please refer to the clabeling recommendations avaible on the Siemens CD attached to the burner
WARNING! 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.
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.
ATTENTION: Connecting electrical supply wires to the burner teminal block MA, be sure that the ground wire is
longer than phase and neutral ones.
Key
C - Capacitor (22nF/250V)
LME / LMV - Siemens control box
R - Resistor (1M
Ω
)
M - Terminal 2 (LGB,LMC,LME), terminal X3-04-4 ( LMV2x,
LMV3x, LMV5, LME7x)
RC466890660 - RC Siemens filter
LMV2/3.. - LMV5..
M
Summary of Contents for URB40
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