LME22 for Gas Burner Control Box 220V Burner Program Controller LME22 331C2

Burners & HeatersPin 1: Ion detection signal line Pin 2: Power supply Zero line Pin 3: Power supply for ignition fan and also the common terminal for the wind pressure detection switch Pin 6: Normally closed terminal of the wind pressure detection switch Pin 11: Normally open terminal of the wind pressure detection switch Pin 4: Power supply for the first-stage solenoid valve Pin 5: Power supply for the second-stage solenoid valve Pin 7: Power supply for the ignition Pin 8: Reset signal Pin 9: Only available in LME22 (power supply for the main burner air door purge actuator) Pin 10: Fault output Pin 12: Power supply Fire line Additionally,Pin 1 is the ion detection signal line. If a UV probe is needed, an additional UV probe module AGQ3 is required to achieve it. Startup sequence for LME21 controller: After the start switch is closed (pins 2 and 12 receive power), the controller's yellow light turns on, and simultaneously pin 3 outputs a signal. The fan starts running, and during the purge time, the wind pressure switch is checked. Pin 11 changes from normally open to normally closed, and pin 6 changes from normally closed to normally open. If the wind pressure switch check is successful, the fan continues purging. After the purge time ends, the yellow light starts flashing. Pin 7 outputs a signal to activate the ignition , and simultaneously pin 4 outputs a signal to open the solenoid valve for ignition. Additionally, pin 1 is used for flame detection. If no flame is detected within 3 seconds, the controller's red light turns on to indicate a fault output. If a flame is detected, the controller's light turns green, indicating successful ignition.

• Burners & Heaters
• LME22 For Gas Burner Control Box 220V Burner Program Controller LME22 331C2