Description
The Weil McLain 383-700-210 is a Negative Temperature Coefficient (NTC) temperature sensor engineered as a genuine OEM replacement for compatible Weil McLain boiler systems. Designed to deliver accurate, real-time temperature data to your boiler’s control system, this sensor helps maintain efficient and safe hydronic heating operation.
Product Overview
As a critical component in your Weil McLain boiler, the NTC temperature sensor continuously monitors water or system temperatures and feeds that data to the boiler control board. NTC sensors decrease in electrical resistance as temperature rises, providing a reliable and responsive signal that allows the control system to modulate burner operation, protect against overheating, and optimize overall system efficiency.
Key Features
- Genuine Weil McLain OEM replacement part (SKU: 383-700-210)
- Negative Temperature Coefficient (NTC) sensing technology for accurate, responsive temperature measurement
- Designed for seamless integration with compatible Weil McLain boiler control systems
- Supports precise boiler modulation and efficient hydronic system performance
- Helps protect boiler components by providing accurate temperature feedback to the control board
- Direct drop-in replacement minimizes installation time and complexity
Applications
- Residential and light commercial Weil McLain hydronic boiler systems
- Hot water heating systems requiring accurate supply or return temperature monitoring
- Replacement of failed or degraded NTC sensors to restore proper boiler control
Why Choose a Genuine OEM Sensor?
Using a genuine Weil McLain replacement sensor ensures compatibility with your boiler’s control board and maintains the accuracy required for safe, efficient operation. Aftermarket sensors may not match the exact resistance curve of the original, potentially causing erratic boiler behavior or fault codes. The 383-700-210 is the correct factory-specified part for your Weil McLain system.







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