Reznor 222771 Flame Sensor Freon Always check the "Coil Reference"

Always check the "Coil Reference" on the valve nameplate

including auxiliary switches and stroke settings

The Siemens GDE146

efficient combustion cycles

Reznor 222771 Flame Sensor Freon Always check the "Coil Reference"The Reznor 222771 Flame Sensor is a critical OEM replacement component engineered for precise flame rectification in industrial and commercial gas fired heating systems. Designed for heavy duty HVAC replacement parts inventories, this sensor monitors the burner's ionized path to confirm ignition, preventing dangerous unburned gas buildup. As a veteran grade Reznor flame sensor, it features a high grade rod on a durable porcelain insulator, built to