this sensor ensures the control board receives accurate resistance feedback

Common indicators include a weak/lazy pilot flame

2-inch port specifications

This SPST (Single Pole Single Throw) control is factory-calibrated to open the electrical circuit at 400 degrees Fahrenheit and features an automatic reset that closes once the temperature drops to 360 degrees Fahrenheit

Always verify the temperature stamps on your existing switch to ensure it matches the 47L19 specifications before installation

Trane BRD4874 Board 322838-752 this sensor ensures the controlThe Trane BRD4874 Dual Hi Voltage Binary Input Board (MPN: BRD4874, also identified as X13650734060) is a critical interface module for Trane chiller controls, specifically engineered for Tracer CH530 and Tracer TD7 automation platforms. This OEM board acts as a precise signal translator, converting high voltage binary inputs from external field devicessuch as pressure switches and safety relaysinto digital data the HVAC control module can process.