Enhanced Durability: The integrated metal enclosure protects the sensitive bellows and electrical contacts from harsh mechanical room environments

which ensures reliable opening even under low pressure differential conditions

and rooftop units under varied load conditions

allowing for seamless field upgrades

Recycle models automatically reset once pressure returns to the set range

Trane KIT17858 HSI Control Els PW 17895 Enhanced Durability: The integrated metalThe 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