Replacing a drifting or open-circuit sensor with this authentic Carrier part restores system reliability and maintains peak performance in demanding commercial or residential environments

A complete assembly requires two flanges and one Sure-Flex Plus sleeve (EPDM

serving as a critical safety or process feature

making it suitable for standard hot water heating and chilled water cooling cycles

this assembly facilitates the removal of flue gases through the heat exchanger

Trane CNT7679 Control Board 322056-301 Replacing a drifting or open-circuitThe Trane CNT7679 Control Board is a critical OEM 120v HSI 1 stage replacement engineered for high performance gas furnaces. Designed to manage the ignition sequence and blower timing, this integrated furnace control board provides precise regulation for hot surface ignition systems. As a veteran spec part, the CNT7679 replaces a wide range of legacy components including CNT7979, CNT3799, and CNT2183, ensuring backward compatibility with furnaces