Enertech Bentone B70-2.3H, Installation And Maintenance Instruction

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171 425 77 16-01
2(2)
ELECTRIC EQUIPMENT
Oil burner control: LMO24.255
List of components
A1 Oil burner control
B1 Photoresistor
F1
Operating fuse
F2 Fuse
F3 Fuse
H1
Lamp, low capacity
H2 Lamp, high capacity
K1 Thermal overload protection
M1 Burner motor
S1 Operating switch
S2 Operating switch, high/low capacity
S3 Control thermostat
S4 Temperature limiter
S5 Micro switch for hinged door
Function
1. Switch on operating switch and twin thermostat
The burner motor starts, an ignition spark is formed, the prepurge goes
on till the prepurge period expires and the solenoid valve 1 opens (2).
2. Solenoid valve 1 opens
Oil mist is formed and ignited. The photocell indicates a lame.
3. The safety time expires
a. If no lame is established before this time limit the control cuts out.
b. If for some reasons the lame disappears after this time limit,
the burner will make an attempt to re-start.
4. Full load thermostat ON
The burner is in operating position and can now change between high
and low capacity.
4-5. Operating position
If the burner operation is interrupted by means of the main switch or the
thermostat, a new start takes place when the conditions in accordance
with point 1 are fulilled.
The oil burner control cuts out
A red lamp in the control is lit. Press the reset button and the burner
re-starts.
S6 Control thermostat, high/low capacity
S7 Main switch
S20 Main switch
T1
Ignition transformer
X1 Connection terminal board
X2 Earth terminal
X3 Plug-in contact "Euro", burner
X4 Plug-in contact "Euro", boiler
X5 Plug-in contact "Euro", high/low burner
X6 Plug-in contact "Euro", high/low boiler
X7 Plug-in contact "Euro" 3-phase, burner
X8 Plug-in contact "Euro", 3-phase, boiler
Y0 Solenoid valve start
Y1 Solenoid valve 1
Y2 Solenoid valve 2
Technical data
Pre-ignition time: 25 s
Pre-purge time: 25 s
Post-ignition time: 5 s
Safety lock-out time: 5 s
Reaction time on lame failure: max. 1 s
Ambient temperature: from - 20 to +60°C
Min. current with lame established: 30 µ A
Max. photo current at start: 5,5 µ A
Enclosure: IP 40
Control of photo current
Current through photo unit is measured with a d.c. ammeter (a moving coil
instrument connected in series with the photo unit).
Mains connection and fuse in accordance with local regulations.
Max loading K1
Connection A1,A2 / 95, 96 / 97, 98 Max 0,2A/15W