Weil McLain 511-330-081 Pilot Assembly

The Weil McLain 511-330-081 Pilot Assembly is a specialized OEM LP pilot kit engineered for precise ignition control in high-efficiency Weil-McLain CGi, CGT, and CGs series boilers. As a technician, you know that managing liquid propane (LP) boiler ignition requires exact orifice sizing and gas flow regulation to prevent pilot outage and lockout codes. This factory-authorized assembly replaces worn or corroded pilot burners, ensuring the thermopile or thermocouple generates the millivoltage necessary for reliable gas valve actuation. Built to strict Weil-McLain boiler parts specifications, the kit includes the correct LP orifice and pre-bent aluminum pilot gas tubing to streamline field installation and restore consistent flame rectification.

Key Technician Benefits

• OEM Precision: Eliminates the seating and alignment issues common with third-party boiler pilot burner replacements.
• Optimized LP Orifice: Specifically calibrated for liquid propane to maintain consistent pilot flame performance and fuel efficiency.
• Complete Replacement Solution: Includes rugged aluminum pilot gas tubing and the necessary orifice for a comprehensive Weil-McLain CGi repair.
• Operational Safety: Ensures proper pilot-to-main burner ignition transfer, critical for maintaining safe combustion cycles.

Common Questions

Is the 511-330-081 compatible with Natural Gas boilers?
No, this specific assembly is configured strictly for LP (Liquid Propane) gas. For Natural Gas (NG) applications, a different orifice and assembly are required to match the lower BTU density and different pressure requirements.

What is included in this Weil-McLain pilot kit?
This LP pilot assembly kit comes with the pilot burner, the factory-drilled LP orifice, and the aluminum pilot gas supply tubing.

Does this assembly work across all CG series boilers?
It is engineered specifically for the CGi, CGT, and CGs series. Always check the boiler rating plate and the individual parts list for your specific Series (e.g., Series 1, 2, or 3) to ensure a precise match.

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.