York S1-025-27747-011 Rollout Switch Els PW 17895 Field installations of the 30-110

Field installations of the 30-110 adapter allow for seamless integration between legacy 3100 series controls and modern sensing components

Key Benefits: Direct OEM Compatibility: Specifically designed to replace the Lennox 78H5501

Engineered as a universal service kit

The Johnson Controls T-4000-2142 is a professional-grade horizontal pneumatic thermostat cover designed specifically for the T-4000 series

which are common causes of mechanical seizing in large-tonnage systems

York S1-025-27747-011 Rollout Switch Els PW 17895 Field installations of the 30-110The York S1 025 27747 011 Rollout Switch is a critical OEM replacement part designed for high performance gas furnace safety. Engineered to trigger at a 250 degree Fahrenheit open temperature, this manual reset rollout switch serves as a final line of defense against dangerous flame rollout conditions. When the internal sensor detects excessive ambient heat near the burner boxoften caused by a cracked heat exchanger, blocked flue, or insufficient