LenxTi LGA52.150B17 Burner Control Instruction Manual

1. Product Overview

The LenxTi LGA52.150B17 is a burner control unit designed for the automatic supervision of gas burners. It serves as a replacement for SIEMENS program controllers, ensuring safe and reliable operation of combustion systems. This unit is compliant with EN 298:2012 standards.

Figure 1: Front view of the LenxTi LGA52.150B17 Burner Control, showing the product label with specifications.

2. Safety Information

• Installation, commissioning, and maintenance must be carried out by qualified personnel only.
• Always disconnect power before performing any work on the unit or associated wiring.
• Ensure proper grounding to prevent electrical shock.
• Verify that the supply voltage matches the unit's specifications (110-120V~, 50-60Hz).
• Do not operate the unit if it appears damaged.

3. Setup and Installation

The LGA52.150B17 burner control unit is designed for integration into industrial control systems. Proper installation is crucial for safe and reliable operation.

3.1 Mounting

Mount the burner control unit securely within a suitable control panel or enclosure, ensuring adequate ventilation and protection from environmental factors such as excessive heat, moisture, and dust. Refer to Figure 3 for an example of an installed unit.

Figure 2: LenxTi LGA52.150B17 burner control installed in a control box.

3.2 Wiring Connections

The unit features multiple terminals for electrical connections. Refer to the rear view diagram (Figure 3) for terminal identification. All wiring should comply with local electrical codes and safety regulations.

Figure 3: Rear view of the LenxTi LGA52.150B17 Burner Control, showing numbered connection terminals.

General Terminal Functions (Consult specific burner system diagrams for exact connections):

• Terminals 1-11: These terminals are used for connecting to various components of the burner system, including power supply, flame sensor, ignition transformer, fuel valves, and safety interlocks. A qualified technician should refer to the specific wiring diagram of the burner system for correct connections.
• Power Supply: Connect the 110-120V~ AC, 50-60Hz power supply to the designated terminals.
• Flame Sensor: Connect the flame sensor (e.g., UV sensor or ionization probe) to its respective terminals for flame supervision.
• Ignition: Connect the ignition transformer to the appropriate terminals for burner ignition.
• Fuel Valves: Connect the main and pilot fuel valves to the control outputs.

After all connections are made, double-check wiring for correctness and security before applying power.

4. Operation

The LenxTi LGA52.150B17 burner control unit operates automatically to manage the ignition sequence and supervise the flame of gas burners. Once correctly installed and powered, it will initiate the burner startup sequence upon receiving a call for heat.

• Startup Sequence: Upon activation, the control unit performs a self-check, then initiates pre-purge, ignition, and main flame establishment.
• Flame Supervision: During operation, the unit continuously monitors the flame signal via the connected flame sensor. If the flame is lost or not established within the specified Trial for Ignition Safety Time (TSA), the unit will safely shut down the burner.
• Safety Times: The unit incorporates safety timing, including a Trial for Ignition Safety Time (TSA) of ≤ 5 seconds, with a maximum TSA of ≤ 10 seconds, to ensure safe ignition and operation.
• Lockout: In case of a fault (e.g., no flame detected, internal error), the unit will enter a lockout state, requiring manual reset after the fault condition has been addressed.

5. Maintenance

Regular maintenance helps ensure the longevity and reliable operation of your burner control unit. Always disconnect power before performing any maintenance.

• Visual Inspection: Periodically inspect the unit for any signs of physical damage, corrosion, or loose connections.
• Cleaning: Keep the unit clean and free from dust and debris. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
• Connection Checks: Ensure all electrical connections are tight and secure.
• Environmental Conditions: Verify that the operating environment remains within specified temperature and humidity ranges.

6. Troubleshooting

If the burner system fails to operate correctly, consider the following basic troubleshooting steps. For complex issues, always consult a qualified service technician.

• No Power: Check the main power supply to the unit and the burner system. Ensure circuit breakers are not tripped.
• Burner Fails to Ignite:
  • Verify fuel supply is open and at correct pressure.
  • Check ignition electrode and transformer for proper function and spark.
  • Inspect flame sensor for cleanliness and correct positioning.
• Unit in Lockout: If the unit is in a lockout state (often indicated by an LED or specific behavior), identify the cause of the fault (e.g., no flame, air pressure switch fault). Rectify the fault and then perform a manual reset as per your burner system's instructions.
• Loose Connections: Inspect all wiring connections for tightness and proper contact.

If the problem persists after basic checks, contact a professional for diagnosis and repair.

7. Specifications

8. Warranty and Support

8.1 Warranty Information

This LenxTi LGA52.150B17 burner control unit comes with a 1-year warranty period from the date of receipt. The warranty type is a seller warranty. During this period, if any problems arise that are not due to human error, spare parts will be provided free of charge.

8.2 Technical Support

For any questions, technical assistance, or warranty claims, please contact the seller or authorized service provider. Ensure you have your product model number and purchase details ready when seeking support.

9. User Tips

While no specific user tips were provided from reviews or Q&A for this product, general best practices for industrial control components include:

• Professional Installation: Always ensure installation is performed by a certified technician to guarantee safety and compliance.
• Regular System Checks: Incorporate the burner control unit into your regular burner system maintenance schedule.
• Documentation: Keep this manual and any system-specific wiring diagrams readily accessible for future reference.