Weil McLain 511-724-274 Flame Sensor Els PW 17895 Key Benefits for the Contractor:

Key Benefits for the Contractor: Reduced Flow Resistance: The long radius 90-degree design facilitates smoother fluid transition compared to standard elbows

While jump-testing can confirm a faulty switch

ensuring broad compatibility with existing HVAC compressor fittings and Rotalock-style systems

As an auto-reset temperature switch

Weil McLain 511-724-274 Flame Sensor Els PW 17895 Key Benefits for the Contractor:The Weil McLain 511 724 274 Main Flame Sensor is a critical OEM replacement part engineered for precise flame rectification in high efficiency boiler systems. As a veteran technician knows, a fouled or oxidized HVAC flame sensor is the primary culprit behind intermittent ignition failure and short cycling. This genuine Weil McLain replacement part is designed to withstand high combustion temperatures, providing a reliable microamp signal to the boiler