Weil McLain 511-330-097 Ignition Module

The Weil McLain 511-330-097 Ignition Module is a critical intermittent pilot ignition control engineered for precision in Weil McLain gas boilers. Designed to operate on a 24V circuit, this module serves as the primary electronic ignition controller for a range of atmospheric and sealed combustion units, including the EG, EGH, LGB Series 2, and PFG models. Built by United Technologies (UTEC) under the part number 1003-511 or 1003-611A, it provides dependable pilot proving and spark generation to ensure safe, consistent burner cycles in both residential and light commercial hydronic systems. This particular variation is supplied without a Molex connector, making it the direct professional replacement for older 10C482 series controls. By maintaining tight flame sensing parameters, the 511-330-097 ignition board prevents gas buildup during failed ignition attempts, ensuring the boiler remains compliant with modern safety protocols.

• OEM Compatibility: Specifically calibrated for Weil McLain EG and EGH boilers, ensuring drop-in mechanical fit and electrical alignment.
• Intermittent Pilot Logic: Minimizes fuel waste by only activating the boiler pilot light during a call for heat, improving overall seasonal efficiency.
• Heavy-Duty Construction: Built with industrial-grade circuitry to withstand the high-temperature environment of a gas boiler cabinet.
• Precision Flame Proving: Features advanced flame rectification technology for rapid detection of pilot presence, preventing nuisance lockouts.

• Can this module be used with Propane (LP) systems? This specific Weil McLain ignition module is generally rated for Natural Gas applications; always verify the pilot burner orifice and gas valve configuration before installation on LP units.
• Does this replace modules with a Molex plug? No, this is the hardwired version (without Molex). If your current module uses a multi-pin plastic plug, you may require part number 511-330-095 or a conversion kit.
• What does a flashing LED or lockout indicate? Most boiler ignition failures are caused by a fouled flame sensor, grounding issues, or a cracked ceramic insulator on the pilot assembly.

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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.