Weil McLain 511-330-197 Burner Assembly

The Weil McLain 511-330-197 is a mission-critical standing pilot burner assembly designed for high-performance gas-fired boilers. As a thermally supervised safety pilot, this unit provides the constant burning flame necessary for reliable ignition in Weil McLain CG boilers and EG boilers (specifically sizes 30 through 75). Engineered for precision and durability, the 511-330-197 pilot assembly includes the pilot burner, a high-response thermocouple, and a heavy-duty mounting bracket to ensure stable flame sensing and immediate gas shut-off should the pilot extinguish.

For service technicians and contractors, this OEM Weil McLain replacement part (often cross-referenced as Sales Reference 10C189 or Beckett E38A1) maintains the original factory combustion specifications. It is compatible with both natural gas and propane configurations when paired with the correct manifold orifices. By utilizing this genuine boiler burner assembly, you ensure consistent terminal performance and eliminate the flame-lifting issues common with lower-quality universal replacements. This assembly is the standard professional choice for restoring safe, reliable operation to aging hydronic systems.

Key Benefits

• Universal Compatibility: Fits Weil McLain CG and EG Series boilers in multiple sizes, supporting a broad range of residential and commercial standing pilot applications.
• Enhanced Safety: The thermally supervised design features a reactive thermocouple that triggers a rapid safety shut-off if the pilot flame is lost.
• Reliable Ignition: Engineered for constant burning, ensuring the main burner cycles smoothly without ignition delays or lockout errors.
• Precision OEM Construction: Manufactured to OEM specifications, ensuring the mounting bracket and pilot burner line up perfectly with existing manifold tappings for a clean install.

Common Questions

Which Weil McLain models use the 511-330-197?
This assembly is primarily designed for the Weil McLain CG and EG/EGA series, including models CG-30 through CG-75 and various EG Series 2 configurations. Always verify your specific series or Beckett cross-reference before installation.

Does this assembly work for both Natural Gas and Propane?
The 511-330-197 itself is a pilot assembly that can be used in systems running both fuels; however, you must ensure your manifold orifices and pilot orifice are correctly sized for the specific gas type according to the manufacturer's manual.

What is included with this burner assembly?
The kit typically includes the safety pilot burner, a thermocouple, and the integrated mounting bracket required for direct installation into the combustion chamber.

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.