Description

Siemens LFL1.333 – Gas burner control, t1=31s, TSA=3s, t9=3s, AC230V

Gas Burner Controls LFL1…

For gas, oil or dual-fuel forced draft burners of medium to high capacity
for multistage or modulating burners in intermittent operation; for safety rea-sons, at least one controlled shutdown must take place every 24 hours
with checked air damper control
flame supervision – with UV detectors QRA… – with ionization probe

SIEMENS LME22.331C2BC burner control

Use

The difference between 01 series and 02 series is the duration of the safety time for the pilot burner of burners equipped with pilot gas valves. For atmospheric burners of high capacity, LFL1.638 is the type to be employed. For burner controls for use with burners in continuous operation, refer to Data Sheet 7785 (LGK16…)

Control and supervision of forced draft burners of expanding flame and interrupted pilot construction
For medium to high capacity
For intermittent operation (at least one controlled shutdown every 24 hours)
Universally applicable for multistage or modulating burners
For use with dual-fuel burners
For use with stationary air heaters

Feature

Undervoltage detection
Air pressure supervision with functional check of the air pressure switch during startup and operation
Electrical remote reset facility
Multicolor indication of fault status and operational status messages
Limitation of the number of repetitions
Accurate control sequence thanks to digital signal handling
Controlled intermittent operation after 24 hours of continuous operation

Engineering Notes

When used in connection with actuators, there is no position feedback signal from the actuator to the burner control
When used in connection with actuators, the requirements of applicable norms and regulations must be observed
The running times of the actuators must match the burner control’s program. An additional safety check of the burner control together with the actuators is required
When substituting burner controls type LGB… or LMG… by LME…, the AGQ1… or AGQ2… ancillary unit must be replaced by the AGQ3…A27

Electrical connection of flame detectors

It is important to achieve practically disturbance- and loss-free signal transmission:

Never run detector cables together with other cables
– Line capacitance reduces the magnitude of the flame signal
– Use a separate cable
Observe the permissible length of the detector cables
The ionization probe and ignition electrode are not protected against electric shock hazard
Locate the ignition electrode and the ionization probe such that the ignition spark cannot arc over to the ionization probe (risk of electrical overloads) and that it cannot adversely affect the supervision of ionization
Insulation resistance
– Must be a minimum of 50 MΩ between ionization probe and ground
– Soiled detector holders reduce the insulation resistance, thus supporting creepage currents
Earth the burner in compliance with the relevant regulations, earthing the boiler alone does not suffice

More types

LME11.230C2 / LME11.330C2 / LME21.130C1 / LME21.130C2 / LME21.230C2 / LME21.330C1
LME21.330C2 / LME21.350C1 / LME21.350C2 / LME21.550C2 / LME22.131C2 / LME22.231C2
LME22.232C2 / LME22.233C2 / LME22.331C1 / LME22.331C2 /(LME22.331C2BC) / LME23.331C2
LME23.351C2 / LME41.051C2 / LME41.052C2 / LME41.053C2 / LME41.054C2 / LME41.071C2 / LME41.091C2 / LME41.092C2 / LME44.056C2 / LME44.057C1 / LME44.057C2

SIEMENS LFL1.333 Gas burner control, AC230V