The terminal configuration includes RC

a functioning switch will show 0V once it closes

This furnace flame sensor acts as a primary safety component

The Armstrong International B1669-3 is a precision-engineered pressure change assembly designed for field maintenance and performance restoration of inverted bucket steam traps

it will automatically break the circuit to prevent short cycling or dangerous exhaust buildup

York 575-67811-314 Wiring Harness 328140-751 The terminal configuration includes RCThe York 575 67811 314 Wiring Harness is a critical OEM replacement part designed for high precision electrical signal transmission within commercial and industrial HVAC systems. This 3 conductor wiring harness features a Packard to AMP connector configuration, specifically engineered for seamless integration with York pressure transducers such as the 025 29139 007 and 025 29139 004 models. Built to withstand the rigorous vibration and thermal cycles