ensure you are utilizing the correct heater circuit or an external step-down transformer as per the wiring diagram

this is an OEM Lennox rollout switch

Rated for high-cycle industrial use

Measuring 45 inches in length

Trane WHL2344 Blower Wheel R-410A ensure you are utilizing theWhen you are dealing with a vibration or airflow issue in a large scale commercial air handler, the Trane WHL2344 Blower Wheel is the direct OEM solution designed to restore system static pressure and efficiency. This CW blower wheel features precise 5" x 41. 16" dimensions, engineered specifically for high capacity Trane units where balanced rotation is non negotiable. As a veteran technician knows, using a generic alternative on a 41 inch shaft