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3" WC for low-fire and 3
It indicates the adjustable overload range
This specific control is optimized for Series 2 systems
You must purchase a 48 cubic inch replacement core separately based on your specific filtration needs
the sensor must be positioned in the direct path of the airflow as specified by the furnace design to accurately monitor the plenum temperature and respond immediately to potential overheat conditions
York S1-1474-0051 Ignition Module 340155-7026 3" WC for low-fire andThe York S1 1474 0051 Ignition Module is a critical OEM component designed to manage the ignition sequence and gas valve control in residential and light commercial furnaces. As a high performance Hot Surface Igniter (HSI) control, this module ensures precise timing for burner startup while continuously monitoring flame rectification to prevent unsafe legal gas accumulation. Engineered to handle 24V 120V control voltage, this part is a direct furnace