rooftop units (RTUs)

and rooftop units under varied load conditions

The adjustable port opening allows for "fast venting" settings

By utilizing an authentic Trane replacement part

Recycle models automatically reset once pressure returns to the set range

Trane KIT17858 HSI Control Els PW 17895 rooftop units (RTUs)The Trane KIT17858 is a critical 24V 2 stage HSI control board designed for high performance furnace platforms requiring precise ignition sequencing and blower motor management. This integrated furnace control manages the hot surface igniter, gas valve timing, and multi speed inducer motors to ensure optimal combustion efficiency. Engineered as a direct OEM replacement kit, it provides seamless compatibility for technicians sourcing a Trane ignition