28
Bentone
7.2 List of components
A1 Oil burner control
A2 Twin thermostat
F1 Fuse, max. 10A
H1 Alarm lamp
H2 Signal lamp (optional)
M1 Burner motor
P1 Time meter (optional)
R1 Flame detector
S3 Main switch
T1 Ignition transformer
Y1 Solenoid valve
X1 Plug-in contact, burner
X2 Plug-in contact, boiler
Mains connection and fuse in
accordance with local regulations
7.2.1 Function LMO14/24
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
opens.
2.
Solenoid valve opens
Oil mist is formed and ignited. The photocell indicates a flame. The
ignition spark goes out after flame indication (See Technical data oil
burner control).
3.
a
b
The safety time expires
If no flame is established before this time limit the control cuts out.
If for some reasons the flame disappears after this time limit, the
burner will make an attempt to re-start.
3-4
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 fulfilled.
The oil burner control cuts out
A red lamp in the control is lit. Press the reset button and the
burner re-starts.
Technical data oil burner control
LMO14.113...
LMO24.255...
Pre-ignition time:
15 s
25 s
Pre-purge time:
16 s
26 s
Post-ignition time:
3 s
5 s
Safety lock-out time:
< 10 s
< 5 s
Reset time after lockout:
< 1 s
< 1 s
Reaction time on flame failure:
< 1 s
< 1 s
Ambient temperature:
-5 +60°C
-20 - +60°C
Min. current with flame established:
45 µA dc
45 µA dc
Max. photo current at start:
5,5 µA dc
5,5 µA dc
Summary of Contents for BENTOFLEX ST 146 B30A
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