Weil McLain 511-330-192 Flame Sensor

Installing a genuine Weil-McLain 511-330-192 Flame Sensor is the only way to ensure the combustion control circuit on your high-efficiency boiler remains reliable. As a critical safety component, this Weil-McLain OEM flame sensor provides the necessary microamp signal to the White Rodgers ignition control, confirming the presence of the main burner flame. Without an accurate signal, the system will trigger a safety lockout, often resulting in common boiler short cycling or no-heat scenarios familiar to field technicians.

Specifically engineered for use in Weil-McLain HE, HE II, and VHE boilers, this sensor features a high-grade Kanthal alloy rod and a durable ceramic insulator designed to withstand the rigorous thermal stresses within the burner chamber. Unlike universal aftermarket sensors that may cause signal drift or fitment issues, the 511-330-192 provides consistent flame rectification. Integrating this OEM part ensures your hydronic heating system operates at peak efficiency while maintaining critical safety protocols.

Key Benefits for Technicians:

• OEM Compatibility: Precision-fit for Weil-McLain HE Series 1-3 and VHE gas boilers using hot surface ignition (HSI) systems.
• High-Temperature Durability: Engineered with premium heat-resistant materials to prevent rod warping and ceramic cracking in high-efficiency heat exchangers.
• Reliable Flame Sensing: Delivers a consistent signal to White Rodgers 50E47-871 and similar HVAC control modules to prevent nuisance lockouts.
• Safety First: Essential for preventing unburned gas accumulation by ensuring the gas valve only remains open when a flame is physically detected.

Common Technical Questions:

How do I know if the Weil-McLain 511-330-192 needs replacement?
If the boiler ignites but shuts down within 2 to 5 seconds, the flame sensor is likely failing to send a rectification signal. Always check for soot buildup or a cracked insulator before replacing.

Can I use an aftermarket sensor instead of the 511-330-192?
Using a genuine Weil-McLain part is recommended to ensure correct rod length and positioning within the flame path, which is vital for maintaining the manufacturer's specified microamp threshold.

What causes these sensors to fail in high-efficiency boilers?
Failure is typically caused by silica or carbon buildup on the metal rod or microscopic cracks in the ceramic housing, both of which degrade the sensor's ability to ground the circuit properly.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.