If the hot surface ignitor serves as a flame sensor (flame rectification)

Key Benefits Precision Averaging: The 8-foot copper element ensures accurate temperature sensing across the entire duct profile

not primary shut-off valves

Nema 1 Enclosure

York S1-363-90016-702 Heat Exchanger 30067439-890 If the hot surface ignitorThe York S1 363 90016 702 Heat Exchanger is an essential OEM replacement component engineered for high efficiency thermal transfer in York gas furnaces and packaged HVAC units. This 5 tube heat exchanger assembly is constructed from heavy duty aluminized steel to resist oxidation and thermal fatigue, ensuring long term structural integrity under high demand cycles. As a veteran grade HVAC replacement part, it utilizes a precision engineered tubular