171 435 42 16-01
ELECTRIC EQUIPMENT
Oil burner control: LOA2..
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 opens (2).
2.
Solenoid valve opens
Oil mist is formed and ignited. The photocell indicates a lame. The ignition
spark goes out after lame indication (See Technical data oil burner control).
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.
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 fulilled.
The oil burner control cuts out
A red lamp in the control is lit. Press the reset button and the burner
re-starts.
LOA2...
Pre-ignition time:
13 s
Pre-purge time:
13 s
Post-ignition time:
15 s
Safety lock-out time:
< 10 s
Reset time after lockout:
< 50 s
Reaction time on lame failure:
< 1 s
Ambient temperature:
-20 - +60°C
Min. current with lame established:
65 µA
Max. photo current at start:
5 µA
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).
Technical data oil burner control
2(2)
