Trane WIR2957 Wire 321894-709 Built on a 56Y frame

Built on a 56Y frame

This direct HVAC replacement part ensures the mechanical integrity of the blower housing

critical for maintaining the correct airflow direction in specific Carrier condenser stacks

Installers should note that this Viessmann replacement control unit requires specific parameter programming based on the boiler's serial number and gas type—natural gas or LPG—via the internal "SERV" menu

Trane WIR2957 Wire 321894-709 Built on a 56Y frameTransitioning to integrated control systems requires precise connectivity, and the Trane WIR2957 (also identified as WIR02957) is the specified 5 pin wire harness for interfacing with ICM motor assemblies. This genuine OEM component is engineered to facilitate reliable communication between the system control board and the condenser fan motor, ensuring the high voltage signals required for varying motor speeds are delivered without impedance. Designed