NTI Boiler 65118667 Smoke Probe 10K Thermistor D4X39

Description

NTI Boiler Smoke Probe 10K D4X39 — OEM Flue Gas Temperature Sensor

The NTI Boiler 65118667 Smoke Probe is a factory-specified replacement temperature sensing probe engineered for use in NTI condensing boiler systems. Utilizing a 10K NTC (Negative Temperature Coefficient) thermistor, this probe continuously monitors flue gas and exhaust temperatures, providing the boiler control board with accurate real-time data to maintain safe and efficient operation. Replacing a faulty or degraded smoke probe restores proper combustion monitoring and helps prevent unsafe flue temperature conditions.

Key Features

• OEM NTI replacement part — ensures full compatibility with NTI boiler models
• 10K NTC thermistor design for accurate, responsive flue/exhaust temperature sensing
• Monitors smoke and flue gas temperatures to support boiler safety controls
• Direct drop-in replacement — no modifications required
• Manufactured to NTI quality standards for long-term reliability
• Part number D4X39 for precise cross-referencing and ordering

Application

This smoke probe is designed for installation in NTI condensing boilers where flue gas temperature monitoring is required by the boiler’s integrated control system. It interfaces directly with the boiler control board, enabling the system to detect abnormal exhaust temperatures and respond accordingly to protect equipment and occupants.

Specifications

• Manufacturer: NTI Boiler
• SKU / Part Number: 65118667
• Model Code: D4X39
• Sensor Type: 10K NTC Thermistor
• Function: Flue / Smoke Gas Temperature Sensing
• Application: NTI Condensing Boiler Systems