Trane MOT4518 Motor 320788-703 this valve features a 1/4"

this valve features a 1/4" x 1/4" NPT connection

Most modern smart thermostats require more conductors (such as 18/5 or 18/8) to provide a common "C" wire and individual cooling/fan controls

you must use the onboard push button to enter programming mode and select the correct lead code as specified in the installation instructions

For low-pressure cutout functionality

Trane MOT4518 Motor 320788-703 this valve features a 1/4"The Trane MOT4518 motor is a purpose built, direct drive blower motor designed for high static air handling applications in commercial and residential HVACR environments. This 1 3 HP motor operates on a 277V single phase power supply, making it a critical component for systems utilizing higher line voltages. Engineered with a 48 frame, it features a 3 speed configuration (1075 RPM base) to allow for precise airflow balancing and staging, ensuring