Description
The NTI Boiler 6000084039 is an OEM replacement flue sensor engineered for use with NTI’s Lx500-800 and TFT series condensing boilers. This critical safety and performance component continuously monitors flue gas temperature, providing real-time data to the boiler’s control system to ensure safe combustion, proper venting, and efficient operation. Replacing a worn or failed flue sensor with a genuine NTI part helps maintain system accuracy, protects against overtemperature conditions, and keeps your boiler running within manufacturer specifications.
Key Features
- OEM replacement flue sensor designed specifically for NTI condensing boilers
- Compatible with NTI Lx500-800 and TFT series boiler models
- Monitors flue gas temperature to support safe and efficient combustion
- Integrates directly with the boiler’s onboard control system
- Helps prevent overtemperature faults and nuisance shutdowns
- Ensures continued compliance with manufacturer performance standards
Compatibility
- NTI Lx500, Lx600, Lx700, Lx800 series condensing boilers
- NTI TFT series condensing boilers
Why Choose a Genuine NTI Replacement Part?
Using genuine OEM components like the NTI 6000084039 flue sensor ensures a precise fit and reliable performance. Third-party substitutes may not meet the exact calibration or electrical specifications required by NTI’s control system, potentially leading to inaccurate readings, fault codes, or voided warranties. Trust NTI OEM parts to restore your boiler to peak operating condition.







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