Weil-McLain 383500300 Return/Supply Sensor Kit, Ultra 310

Weil-McLain Return/Supply Sensor Kit – Precision Monitoring for Ultra Gas Boilers

The Weil-McLain 383-500-300 Return/Supply Sensor Kit is a direct replacement component engineered for accurate water temperature monitoring in Ultra Series Gas Boilers, specifically the size 310 model. By maintaining correct supply and return temperature readings, this sensor supports consistent operation, system safety, and overall energy efficiency.

Key Features

• Application-Specific Fit: Designed for Weil-McLain Ultra 310 boilers to ensure full compatibility and reliable performance.
• Accurate Monitoring: Provides precise supply and return water temperature readings for proper boiler control and modulation.
• Durable Build: Manufactured with high-quality materials to withstand demanding hydronic heating environments.
• Maintains Efficiency: Helps the boiler maintain optimal combustion and heat transfer by ensuring accurate system feedback.

Technical Specifications

• Part Number: 383-500-300
• Function: Return/Supply water temperature sensor
• Compatible Models: Weil-McLain Ultra Gas Boiler (size 310)
• Included: One sensor assembly

Installation Guidance

This sensor is designed for straightforward replacement; however, proper installation is critical to ensure accurate readings and compliance with boiler operation requirements. Installation should be carried out by a licensed HVAC technician or plumber familiar with Weil-McLain Ultra Series boilers. Proper sensor placement and secure electrical connections are essential for optimal performance.

Professional Notes

For Contractors: The kit provides an exact-fit solution that reduces downtime on service calls. Reliable sensor feedback ensures proper modulation and limits nuisance lockouts, supporting both performance and customer satisfaction.

For Maintenance Teams: If replacing in-house, confirm boiler power is disconnected before service. Inspect wiring and harness connections to verify secure contact after installation.

Summary

The Weil-McLain 383-500-300 Return/Supply Sensor Kit is a precision replacement part designed to keep Ultra 310 boilers operating efficiently and reliably. With accurate monitoring, durable construction, and OEM-specific compatibility, it’s the right choice for maintaining system integrity and performance in demanding heating applications.