Weil McLain 511-330-099 Ignition Control

The Weil-McLain 511-330-099 Ignition Control is a critical electronic component engineered for intermittent pilot ignition systems in gas-fired hydronic boilers. Designed specifically for the Weil-McLain CGi series (Series 1 through Series 4) and compatible with select CGs and CGt models, this 120V AC module manages the full ignition sequence, including spark generation, flame rectification, and safety shutoff protocols. For technicians troubleshooting "no heat" calls, this direct-fit replacement ensures reliable integration without the need for field modifications or wiring harness adapters. The module features integrated flame sensing and safety logic to prevent gas buildup by terminating the sequence if a stable flame is not detected within the designated trial-for-ignition period. Built with rugged solid-state circuitry, the 511-330-099 provides the precise timing and voltage regulation required to maintain boiler efficiency and prevent nuisance lockouts in residential and light commercial heating applications.

• OEM Compatibility: Precision-engineered for Weil-McLain CGi boilers, ensuring drop-in replacement and seamless electrical connectivity.
• Enhanced Safety: Features automatic safety shutoff and lockout logic to protect against flame failure and unburned gas accumulation.
• Optimized Performance: Maintains a consistent ignition sequence for stable combustion and improved fuel recovery.
• Contractor Grade: Durable construction reduces callbacks by providing dependable pilot-to-main-burner transitions under high-demand cycles.

Is the 511-330-099 compatible with LP gas systems?
Yes, this ignition control is suitable for both natural gas and propane (LP) configurations, provided the boiler is equipped with the correct gas valve and pilot orifice.

Does this module replace older Fenwal or United Technologies controls in Weil-McLain units?
This part is the designated replacement for several older boiler control boards in the CGi series. Always verify the part number on your existing module or the boiler's service manual before installation.

What are the symptoms of a failing 511-330-099?
Common indicators include intermittent sparking, failure to energize the main gas valve after pilot ignition, or frequent control lockouts that require a manual power reset.

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.