Essential for maintaining AFUE efficiency ratings by controlling the heat transfer rate across the primary and secondary cells

Enhanced Airflow: Designed to optimize airflow for improved cooling and heating efficiency

the Reznor 258251 DSI Controller Replacement Kit is the industry-standard field fix for igniter control board issues

Most R-410A systems use Polyolester (POE) lubricants

Universal Wiring Harness: Pre-terminated leads facilitate rapid RB-24E wiring to the transformer and gas valve or control board

Reznor 210855 Limit Switch 320788-704 Essential for maintaining AFUE efficiencyThe Reznor 210855 Limit Switch is a critical high limit safety component designed for precise thermal monitoring in commercial unit heaters and air handlers. Engineered as an L240F manual reset limit switch, this device is calibrated to trip at 240F, effectively interrupting the power supply to the heating circuit to prevent unit damage or safety hazards. This specific HVAC high limit control features a 60 inch capillary, providing the necessary reach