Weil McLain 511-330-089 Sensor & Clamp

The Weil McLain 511-330-089 Sensor & Clamp is a critical OEM replacement water temperature sensor engineered for precise thermal monitoring in high-efficiency hydronic systems. This thermistor-style temperature sensor is primarily utilized as a water return sensor or inlet sensor for Weil McLain GV series boilers, including the GV90, GV90+, and GV-3 Trim models. By delivering accurate resistance-based signals to the Integrated Boiler Control (IBC), this component ensures the system maintains optimal firing rates and prevents rapid short cycling or overheat conditions. The assembly includes a robust mounting clamp and 12-inch electrical leads for a secure, direct-mount installation to the return piping, facilitating consistent heat transfer and responsive data logging for the control logic. Utilizing genuine Weil McLain boiler parts like this 511-330-089 kit maintains the integrity of the original design parameters and provides the reliable performance required for demanding residential heating applications.

• Precise Thermal Feedback: Engineered to provide the high-accuracy resistance data required by the boiler control module for efficient burner modulation.
• Direct-Mount Design: The included stainless steel clamp ensures a tight, high-conductivity connection to the piping for immediate temperature response.
• GV Series Compatibility: Purpose-built for Weil McLain GV90, GV90+, and GV-3 boilers, ensuring seamless electrical and mechanical integration.
• Complete Solution: Features 12-inch lead wires to streamline the connection process to the wiring harness without the need for additional splicing.

• How do I know if my sensor is failing? Symptoms often include fluctuating water temperatures, frequent error codes related to sensor limit faults, or the boiler staying "stuck" in a specific firing state.
• Is this sensor compatible with all Weil McLain models? No, this is a specific model-dependent part. While common on GV series boilers, you must verify against your specific serial number and parts list.
• Does this include the clamp? Yes, the 511-330-089 kit is a combined sensor and clamp assembly for immediate installation.

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.