Weil McLain 512-200-077 Main Burner

The Weil-McLain 512-200-077 Main Burner is a critical combustion component engineered for high-performance gas delivery and flame stability in hydronic heating systems. As a veteran-grade Weil-McLain burner replacement, this tubular stainless steel unit is designed specifically for boiler maintenance in AHE, CG, and CGa series models. Its high-grade stainless steel burner tube construction resists the corrosive effects of localized high-temperature combustion and condensation, ensuring long-term structural integrity and consistent thermal output. For service technicians, this OEM boiler part ensures an exact fit, maintaining the precise venturi alignment required for optimal air-to-fuel ratios and preventing soot accumulation or irregular flame patterns. Integrating this gas boiler burner during routine service calls late in the season helps restore factory-spec combustion efficiency and system reliability. Each unit is manufactured to handle the rigorous duty cycles of residential and light commercial cast-iron boilers, facilitating a uniform burner flame across the entire heat exchanger surface for maximum heat transfer.

• Direct OEM Match: Designed for seamless integration into Weil-McLain AHE, CG, and CGa series boiler burner manifolds.
• Corrosion Resistance: High-grade stainless steel construction prevents premature oxidation and orifice clogging.
• Combustion Precision: Engineered as a regular burner to provide stable flame characteristics and low-noise operation.
• Reliable Ignition: Features a consistent port design to support fast light-offs and smooth crossovers across the burner tray.

Common Questions

Is this burner compatible with all CG series boilers?
The 512-200-077 is designed for AHE, CG, and CGa series units. It is classed as a 'regular' burner; for models requiring a pilot bracket or specific ignition mounts, you should verify if part numbers 512-200-078 or 512-200-079 are required for your specific manifold configuration.

Will this burner work for Propane (LP) conversions?
While the burner tube is physically compatible with both natural gas and liquid propane, the specific orifice size and manifold pressure settings must be adjusted according to the manufacturer's conversion specifications for the boiler model in question.

How many burners are required for a complete manifold replacement?
This varies by the boiler's BTU rating. For example, an AHE-45 typically utilizes three burners, while an AHE-60 requires four. Always consult the specific boiler's Rating Plate or Service Manual to determine the correct quantity for the full assembly.

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.