Bentone LME23.331C2, Installation And Maintenance Instruction

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4.2.1 List of components
A1 Gas burner control S4 Temperature limiter
A3 Leakage control VPS 504 S7 Main switch
B1 Ionisation electrode S8 Air pressure switch
U2 UV-detector QRC S9 Gas pressure switch, min
F1 Fuse T1 Ignition Transformer
H1 Operating lamp Y1 Solenoid valve
M1 Motor X3 Plug-in contact, burner
P1 Timer total operating time X4 Plug-in contact, boiler
S3 Control thermostat
4.3 Function LME...
1. Operating switch ON-Thermostat ON-Gas pressure switch ON
A check that the air pressure switch does not indicate fan pressure is
carried out.
2. Burner motor starts
A check that the air pressure switch indicates sufficient fan pressure is
carried out.
3. The ignition spark is created
4. The gas solenoid valve is open
The gas is ignited. The ionisation electrode now indicates a flame.
5. The safety time expires
The ignition spark ceases. The safety period ceases. If the spark is missing
or it disappears after this time limit, the gas burner control is blocked.
6. Operating position
7. Stop
The operation of the burner can now be stopped with the control switch or
thermostat.
If the gas burner control is blocked
Red light in the gas burner control is lit. The burner is restarted by pushing
the reset button.
! Mains connection and
fuse in accordance
with local regulations.
4.3.1 Technical data
LME23.331C2
3 s
30 s
2.5 s
< 3 s
< 1 s
< 1 s
5 µA
20 µA
160303-324
Preiginition time
Prepurge time
Postignition time
Safety lockout time
Reset time after lockout
Reaction time on fl ame failure
Min. ionisation current at fl ame
Max. ionisation current