Weil McLain 511-330-163 Pilot Assembly

The Weil McLain 511-330-163 Pilot Assembly is a specialized OEM field replacement engineered for intermittent pilot ignition systems. As a veteran-grade natural gas pilot assembly, this kit integrates a high-output spark electrode and a precise flame sensing probe to ensure consistent ignition cycles in high-demand residential and commercial applications. Designed for seamless integration with Weil McLain EGH boilers (all sizes) and CGM Series 7-10 units, this assembly features a dedicated natural gas orifice and factory-terminated ignition and sensor leads. By maintaining the correct pilot-to-main burner relationship, it prevents delayed ignition and optimizes combustion efficiency. For technicians service-managing older hydronic systems, utilizing this genuine HVAC replacement part is critical for maintaining the safety integrity of the Johnson Controls internal pilot hardware. The assembly includes the primary ignition electrode, lead cable, and sensing wire, providing a comprehensive solution for troubleshooting ignition failures and recurring lockout conditions in gravity or forced circulation systems.

• OEM Compatibility: Specifically engineered for Weil McLain CGM and EGH series gas-fired boilers, ensuring proper fitment and flame signal strength.
• Integrated Spark Technology: Features a factory-aligned spark electrode for reliable arc-to-ground ignition under varying manifold pressures.
• Enhanced Flame Sensing: Includes a high-grade sensing probe to provide immediate feedback to the ignition module, reducing startup delays.
• Technical Build: Constructed with durable materials to withstand high-temperature combustion environments without fouling or warping.

Is this pilot assembly compatible with Propane (LP) systems?
No, the 511-330-163 is configured strictly for natural gas applications. Using this assembly with LP gas without a proper orifice conversion can lead to unsafe combustion and equipment damage.

Does this unit include the ignition lead and sensor wires?
Yes, it comes equipped with the necessary ignition lead cable and sensing probe lead wire for direct connection to your existing ignition control module.

What boiler models does the 511-330-163 support?
It is the standard replacement for Weil McLain EGH (all sizes) and CGM Series 7 through 10 boilers using intermittent pilot ignition.

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.