Thermal Protection: Internal safeguards prevent winding damage due to excessive heat or restricted airflow

Installation Flexibility: Compact design with three ground terminals and edge connector simplifies wiring in tight furnace or boiler cabinets

The Lennox 20A79 is designed for a 1 7/16-inch diameter shaft

Field-Ready Design: Standard 3/8" x 3/8" fittings allow for straightforward brazing and installation

or visible melting/discoloration of the coil housing caused by overheating

Utica-Dunkirk 240002986 Sensor THPU32HP7Y Thermal Protection: Internal safeguards preventThe Utica Dunkirk 240002986 Coil Temperature Sensor is a precision engineered 10k ohm thermistor designed for accurate thermal feedback in hydronic heating systems. This critical HVAC replacement sensor monitors heat exchanger temperatures to ensure proper modulation and prevent overheating conditions within the boiler cabinet. Engineered for compatibility with specific Utica and Dunkirk condensing boilers, this probe features high tolerance