Siemens LME21.330C2 Control Box
240v
Burner controls for the supervision of 1 or 2-stage gas or gas/oil burners of small to medium capacity, with or without fan in intermittent operation.

LME… are used for the startup and supervision of 1 or 2-stage gas or gas/oil burners in intermittent operation. The flame is supervised by an ionization probe or flame detector QRA… with ancillary unit AGQ3…A27 for gas/oil forced draft burners or blueburning flames with blue-flame detectors QRC...

In terms of housing dimensions, the LME... are identical with the burner control LGB… and LMG… burner controls (refer to Type summary).

• For gas burners with or without fan to EN 298: 2003
• For gas forced draft burners to EN 676
• For oil burners to EN 230: 2005-10

• Features
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