Internal Durability: Engineered with a linear flow characteristic to prevent water hammer and provide stable modulation under varying pressure differentials

What damper size is this actuator rated for

Accurate Signal: Maintains a consistent millivolt output for precise temperature sensing and control

Ensuring the high limit control is calibrated to the exact L250F specification is essential for maintaining equipment performance and safety

ensuring high-resolution signal output and long-term stability with minimal drift

Lennox Y8848 Control 321702-401 Internal Durability: Engineered with aThe Lennox Y8848 Fan and Limit Control is a critical OEM replacement component designed for precise thermal regulation in residential and commercial gas furnaces. Featuring a 3 inch insert length, this control is the direct functional equivalent to the Honeywell F558, providing seamless integration into existing Lennox air handlers and heating units. As a technical professional, you understand the necessity of accurate high limit protection; this unit