Nti 84781 Outlet Sensor Clip on Tx Models Replacement 64980457

Product Description

The NTI 84781 is a clip-on outlet sensor designed as a direct replacement part for NTI Tx model boilers. This sensor mounts directly onto the outlet pipe of the boiler and measures the temperature of the water leaving the heat exchanger. Accurate outlet temperature readings are critical for proper boiler operation, efficiency, and safety. The control board relies on this sensor to regulate firing cycles, modulate the burner, and protect the system from overheating. Without a functioning outlet sensor, the boiler cannot accurately manage water temperature, which can lead to short cycling, fault codes, or system lockout. HVAC technicians and hydronic heating professionals rely on OEM-grade replacement sensors like the NTI 84781 to restore full system function quickly and reliably. The clip-on design makes installation straightforward, reducing labor time during a service call. This sensor is compatible with NTI Tx series condensing boilers, which are commonly found in residential and light commercial hydronic heating systems. When diagnosing a boiler that displays outlet temperature errors, sensor fault codes, or erratic temperature readings, replacing this sensor is a standard first step. Using the correct OEM part number ensures proper resistance values, accurate calibration, and compatibility with the existing control board. This unit is sold individually and ships as a single replacement part. It carries the alternate part reference number 64980457, which is the NTI catalog number used to identify this sensor across service documentation and parts lists. Stocking this part is recommended for service companies that regularly work on NTI boiler systems.

• Clip-on design for fast, tool-free installation on outlet piping
• Direct OEM replacement for NTI Tx model boilers, alternate part number 64980457
• Provides accurate outlet water temperature data to the boiler control board

Product Highlights

The NTI 84781 clip-on outlet sensor is a factory-spec replacement part built to restore accurate temperature monitoring in NTI Tx series boilers. It installs quickly and ensures the control board receives reliable readings for safe, efficient boiler operation.

Product Information

Standard Information

• Brand: NTI BOILERS
• Manufacturer Part Number: 84781

Technical Specifications

• Alternate Part Number: 64980457
• Type: Replacement Part
• Sensor Style: Clip On
• Compatible Models: NTI Tx Series Boilers
• Pack Size: 1 per each
• Unit of Measure: Each