Trane CNT7737 Control 321894-709 Flexible Installation: Features standard 1/4"

Flexible Installation: Features standard 1/4" NPT bottom inlet and can be mounted without hyper-accurate leveling

This kit includes a factory-installed natural gas orifice and a separate LP gas orifice

OEM Compatibility: Guaranteed fit for specific Carrier Corporation air handlers

Common Questions: How do I confirm the rotation of my old blower wheel

Do I need special sealants for this transition

Trane CNT7737 Control 321894-709 Flexible Installation: Features standard 1/4"The Trane CNT7737 Control is a critical OEM integrated furnace control (IFC) designed specifically for single stage gas furnaces and air handlers. As the primary logic module for the air handler, this integrated control manages the complex sequence of operation, including ignition timing, blower sequencing, and safety circuit monitoring. Engineered to support constant torque motors and single stage systems, the CNT7737 replaces several legacy part