Weil McLain 511-724-296 Temperature Sensor

The Weil McLain 511-724-296 Inlet/Outlet Temperature Sensor is a brass-threaded temperature sensor with a white two-pin connector. It is catalogued under the description Temp Sensor, Inlet/Outlet, which describes the job it does: measuring the temperature of the water at a boiler's inlet or outlet connection and sending that reading to the control. The brass thread lets it screw into the boiler fitting directly, and the two-pin connector plugs into the matching harness.

Boiler controls rely on temperature sensors to decide when to fire, when to modulate and when to shut down. If an inlet or outlet sensor drifts out of range or fails open or shorted, the control can show an error, hold the burner off or run it at the wrong temperature. Replacing the sensor with the same part number restores the reading the control expects and clears the fault that was tied to the old sensor.

Before you order, compare the old sensor with the product photo. Look for the brass threaded body and the white two-pin connector, and check that the thread and connector match what you are replacing. The catalog description gives the sensor type and location but does not name a boiler model, so the safest approach is to match the part number, 511-724-296, against the sensor you are removing, or send us the boiler model and serial number so our team can help confirm. When you install the new sensor, let the boiler cool and relieve any pressure first, and follow the boiler manual for sealing the thread.

Key Benefits

• Inlet and Outlet Sensing: Catalogued as a temperature sensor for the inlet or outlet connection.
• Brass Threaded Body: Screws directly into the boiler fitting for a direct water temperature reading.
• Two-Pin White Connector: A plug-in connection that is easy to match against the old sensor.
• Restores Control Readings: Replaces a drifting or failed sensor so the control reads the actual water temperature.

Common Questions

• What is the 511-724-296? It is a Weil McLain inlet/outlet temperature sensor with a brass threaded body and a white two-pin connector.
• Which boiler does it fit? The catalog description does not list a boiler model. Match the part number against your old sensor, or send us the boiler model and serial number and our team will confirm before you buy.
• What happens when this sensor fails? The control may display an error, hold the burner off or run at the wrong temperature, depending on how the sensor fails.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.