Nti 65118666 High Efficiency Internal Circulator Pump

Product Description

The NTI 65118666 is a high-efficiency internal circulator pump designed for use in NTI condensing boiler systems. Serving as a Taco-sourced pump assembly, it handles hydronic fluid circulation within the boiler, moving heated water through the heat exchanger and distribution loop. This component is installed by licensed plumbers and HVAC hydronic technicians during routine pump replacement or system servicing. Its internal mounting configuration means it integrates directly within the boiler cabinet, keeping the installation footprint compact and the hydronic circuit intact.

This pump is a direct internal replacement for NTI condensing boiler models including the TRX 85, TRX 110C, TRX 120, and TRX 150C. It is suited for residential and light-commercial hydronic heating applications where reliable, low-energy circulation is required. Technicians servicing NTI boilers in these model families should confirm the pump step configuration matches the original specification before installation.

Key Features

• High-efficiency circulator pump designed for low energy consumption in hydronic heating systems
• Internal mounting design integrates directly inside compatible NTI boiler cabinets
• Taco-sourced pump assembly meeting NTI OEM specifications
• Compatible with multiple TRX-series boiler models for broad replacement coverage
• Step 1 pump configuration appropriate for the specified TRX model range

Compatibility

Confirmed compatible with NTI condensing boiler models TRX 85, TRX 110C, TRX 120, and TRX 150C as an internal replacement pump assembly.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC hydronic technician. Before beginning, shut down the boiler, isolate and drain the affected hydronic circuit, and allow all components to cool to a safe handling temperature. Verify system pressure is relieved before disconnecting any fittings. Confirm pump orientation and flow-arrow direction match the original unit before securing the assembly in place.

Technical Specifications

• Pump Type: High-efficiency internal circulator
• Pump Source: Taco
• Configuration: Step 1

Standard Information

• Brand: NTI
• Manufacturer Part Number: 65118666