Trane SWT3019 Reverse Flow Switch F Open F Close Boiler Safety Controls & Aquastats - 95 85

The Trane SWT3019 is a reverse flow switch that opens at 95° and closes at 85°. This safety device is installed on the return air side of the heat exchanger and serves as a critical temperature monitoring component for gas furnaces.

Key Safety Function:

This device shuts down the burner and vent motor once the temperature exceeds the set point, protecting your furnace from potentially dangerous overheating conditions. The reverse flow switch helps detect abnormal temperature conditions that could indicate improper venting or restricted airflow, ensuring safe furnace operation.

Features:

• Temperature set points: Opens at 95°F, Closes at 85°F
• Genuine OEM Trane replacement part
• Identical to part number 47-17359-23
• Simple two-wire electrical connection
• Installed on return air side of heat exchanger

This switch is designed for use with Trane gas furnaces and is an essential safety component that should be replaced if faulty. Regular inspection and proper maintenance of limit switches ensures reliable furnace operation and home safety.