Weil-mclain wm383500125 Outdoor Temperature Sensor Replacement 383-500-125

Product Description

The Weil-McLain wm383500125 Outdoor Temperature Sensor is a direct replacement part designed for use with Weil-McLain boiler systems that rely on outdoor reset controls. This sensor monitors the outside air temperature and sends that data to the boiler control board, allowing the system to adjust water temperature based on actual outdoor conditions. This process is known as outdoor reset, and it helps boilers operate more efficiently by matching heat output to the current heating load. HVAC technicians and heating system installers working on Weil-McLain boilers will recognize this sensor as a critical component for maintaining accurate and efficient system operation. When the outdoor temperature sensor fails or reads incorrectly, the boiler may not modulate properly, leading to comfort complaints, excess fuel use, or system faults. Replacing a faulty sensor with the correct OEM part restores accurate temperature measurement and proper boiler control. The wm383500125 is the manufacturer part number used to source this sensor directly from Weil-McLain, and it corresponds to the alternate part number 383-500-125. This sensor weighs approximately 0.54 pounds, making it a compact and lightweight component that is easy to handle during installation. Outdoor temperature sensors of this type are typically mounted on an exterior wall away from direct sunlight, vents, and other heat sources to ensure accurate ambient readings. Proper sensor placement and wiring are essential for the outdoor reset function to work as intended. This replacement part is built to Weil-McLain specifications and is intended for professional installation by licensed heating contractors and HVAC technicians. Using the correct OEM replacement ensures compatibility with existing control boards and wiring harnesses in Weil-McLain heating systems.

• Monitors outdoor air temperature to support outdoor reset boiler control strategies
• Direct OEM replacement for Weil-McLain boiler systems, part number 383-500-125
• Lightweight at approximately 0.54 pounds for easy handling and installation

Product Highlights

The Weil-McLain wm383500125 Outdoor Temperature Sensor restores accurate outdoor air monitoring to Weil-McLain boiler systems, enabling proper outdoor reset operation and efficient heating performance. It is an OEM-spec replacement part suited for professional HVAC service and installation.

Product Information

Standard Information

• Brand: WEIL-MCLAIN
• Manufacturer Part Number: wm383500125

Technical Specifications

• Alternate Part Number: 383-500-125
• UPC / GTIN: 672619157606
• Item Type: Parts
• Weight: 0.54 pounds