Function Lme - Bentone BG 550 M LN Installation And Maintenance Instruction

3.2.1 Components
A1 Burner control
A2 Power control
B1 Ionization electrode
F1 Operating fuse
F2 Operation fuse
F3 Operation fuse
H1 Operating lamp
K1 Contactor + Overload protection
M1 Motor
M2 Damper motor
Q1 Signal amplifier AGQ (accessory)
R1 UV-detector (accessory)
3.3

Function LME

1. Operating switch ON-Thermostat ON-Gas pressure switch ON-Air
damper closed.
Check that the air pressure switch does not indicate fan pressure,
then the motor starts.
2. Damper motor opens.
The damper motor opens the damper to the maximum load position.
Check that the air pressure switch indicates sufficient fan pressure.
3. Damper motor closes.
The damper motor closes to the minimum load position, then the
ignition spark is produced.
4. Main and safety valves open.
The gas ignites and the ionisation electrode indicates flame.
5.
The safety time ends.
Ignition spark and safety time cease. If the spark is missing or it
disappears after this time limit, the gas burner control is blocked.
6. Operating position.
The burner is in operating mode and can now switch to the capacity
controlled by the controller.
7. Stop.
The burner operation can be stopped with the operating switch or the
thermostat.
If the gas burner control is blocked
The red light in the gas burner control comes on. The burner is restarted by
pressing the reset button.
3.2.2 Technical data
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
12 Bentone
S1 Operating switch
S3 Control thermostat
S4 Temperature limiter
S5 Safety switch for hinged door
S7 Main switch
S8 Air pressure switch
S9 Gas pressure switch, min
S11 Change-over switch, Man-Auto
S12 Change-over switch, Increase-
Decrease
S15 Control thermostat, 3-pole (only
for 2-stage sliding)
S20 Main switch 1-phase
LME22.232C2E
3 s
20 s
2.5 s
< 3 s
< 1 s
< 1 s
5 µA
20 µA
T1 Ignition transformer
X1 Connection terminal board
X2 Earth terminal
X3 Plug-in contact, burner
X4 Plug-in contact, boiler
X7 Plug-in contact, 3-phase, burner
X8 Plug-in contact, 3-phase, boiler
X15 Plug-in contact, power
controller, burner
X16 Plug-in contact, power controller
Y1 Solenoid valve 1
Y3 Solenoid valve 3
Mains connection and
!
fuse in accordance with
local regulations.