Weil McLain 511-330-085 Module

The Weil McLain 511-330-085 Flame Proving Module (U-T# 1003-60) is an essential flame safety accessory engineered specifically for Weil McLain LGB boilers. As a veteran technician knows, maintaining a stable flame signal is critical for preventing gas accumulation and ensuring hazardous combustion conditions do not occur. This genuine OEM flame proving module operates on a 24 VAC power supply at 50/60 HZ, consuming a nominal 150 MA for the control circuit. It functions by continuously monitoring the flame's presence and quality, providing instantaneous shutdown of the gas valve if the signal is lost or the pilot fails. Replacing a faulty or intermittent control with the U-T 1003-60 factory replacement ensures the precise timing and voltage thresholds required by the LGB series control logic. Its compact design allows for direct integration into existing control cabinets without modifying hardwired safety loops.

• System Compatibility: Purpose-built for Weil McLain LGB boilers, ensuring accurate signal communication with the primary control board.
• Safety Compliance: Provides critical flame rectification and monitoring to prevent dangerous "no-flame" gas flow scenarios.
• Industrial Grade Reliability: Designed to withstand the thermal and electrical demands of commercial boiler rooms.
• Precise Electrical Specs: Operates on standard 24 VAC, pulling only 150 MA, making it a low-draw but high-impact safety component.

Is the 511-330-085 compatible with Ultra or SlimFit series boilers?
No, this specific flame proving module is engineered for the LGB series. Always verify the part number against your boiler's technical data sheet to ensure the safety sequence matches.

What are the symptoms of a failing U-T# 1003-60 module?
Technicians often report short-cycling, "flame failure" error codes, or a burner that ignites briefly and then drops out if the module cannot "prove" the flame signal accurately back to the circuit board.

Can I use a universal flame sensor instead?
While sensors are part of the circuit, this Weil McLain 511-330-085 is the processing module itself. Using a generic substitute risks bypassing factory-set safety timings and is not recommended.

This item is not eligible for free shipping.

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.