Enertech Bentone ST 133 K, Installation And Maintenance Instruction

171 435 25  16-01

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.

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.

The safety time expires 

a.  If no flame is established before this time limit the control cuts out.

b.  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.

ELECTRIC EQUIPMENT

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

45 µA

Max. photo current at start:

5,5 µA

5,5 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).

2(3)