Description
The Utica-Dunkirk 240008225 is an OEM outdoor temperature sensor engineered for use with compatible Utica-Dunkirk boiler systems. Utilizing a 12K NTC (Negative Temperature Coefficient) thermistor with a tight 3% resistance tolerance, this sensor delivers accurate, reliable outdoor temperature readings that allow your boiler control system to optimize heating output based on real-time ambient conditions — a process known as outdoor reset control.
Proper outdoor reset operation reduces fuel consumption, improves comfort, and extends equipment life by modulating boiler water temperature in response to changing outdoor conditions. Replacing a failed or degraded outdoor sensor with a genuine OEM part ensures your system continues to perform as designed.
Key Features
- OEM Utica-Dunkirk replacement outdoor temperature sensor
- 12K NTC thermistor for accurate, responsive temperature measurement
- 3% resistance tolerance for precise control signal accuracy
- Designed for outdoor reset and boiler modulation applications
- Direct OEM replacement — no modifications required
Specifications
- SKU: 240008225
- Sensor Type: NTC (Negative Temperature Coefficient) Thermistor
- Resistance Value: 12K Ohm
- Tolerance: 3%
- Application: Outdoor ambient temperature sensing
- Brand: Utica-Dunkirk
Application
This sensor is intended for installation on an exterior wall or other outdoor location where it can accurately measure ambient air temperature. It connects to the boiler control board to enable outdoor reset functionality, helping the system deliver the right amount of heat based on how cold it is outside. Always consult your Utica-Dunkirk installation and service documentation to confirm compatibility with your specific boiler model before installation.
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