York S1-025-26339-001 Limit Switch Common Questions: Which water feeder

Common Questions: Which water feeder series is the McDonnell & Miller 304100 compatible with

facilitating communication between the HVAC control board and major mechanical components like the compressor

these part numbers are technically identical and serve as direct replacements for one another in all Lennox terminal and control applications

Precision Calibration: Engineered for accurate propane gas flow regulation in power-vented units

For technicians performing annual maintenance or a combustion chamber repair

York S1-025-26339-001 Limit Switch Common Questions: Which water feederThe York S1 025 26339 001 Limit Switch is a primary safety component engineered for precise thermal monitoring in residential and light commercial forced air systems. This 100 250F auto limit switch features an automatic reset mechanism, designed to break the 24V control circuit if the heat exchanger plenum exceeds the calibrated 250F threshold. As a critical furnace high limit sensor, it prevents thermal stress and potential heat exchanger cracks by