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or the White/Black and White/Yellow wires for 120VAC signals
providing a seamless retrofit into existing piping layouts
making it compatible with most standard 208V
making it an ideal solution for older 4-wire installs where pulling a C-wire is labor-intensive or restricted by site conditions
ideal for sensitive HVACR control circuits
Weil McLain 511-724-274 Flame Sensor Els PW 17895 or the White/Black and White/YellowThe 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
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