Nti 99986998 Fuse 3.15A 250V Lft Boiler

Product Description

The NTI 99986998 is a slow-blow fuse rated at 3.15 amps and 250 volts, designed for use in NTI LFT series boilers. This fuse provides overcurrent protection for the boiler control circuit, opening the circuit in a fault condition to prevent damage to downstream electronics and components. It is a direct OEM-style replacement part installed by licensed HVAC technicians and plumbers servicing hydronic heating systems. Proper fuse selection is critical in boiler control circuits where nuisance trips or under-rated protection can lead to board failure or unsafe operation.

This fuse is intended for use in NTI LFT series condensing boilers commonly found in residential and light commercial hydronic heating applications. It seats into the boiler control board or fuse holder as part of the unit's electrical protection system. Technicians servicing NTI boilers should verify the fuse rating matches the original specification before installation to maintain proper circuit protection.

Key Features

• Rated at 3.15 amps for precise overcurrent protection in boiler control circuits
• 250-volt rating suitable for standard boiler control board applications
• LFT slow-blow design tolerates brief inrush currents without nuisance tripping
• OEM replacement part for NTI LFT series boiler systems

Compatibility

Designed as an OEM-style replacement fuse for NTI LFT series boilers. Verify fuse holder dimensions and rating requirements against the original fuse before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified service professional. Always disconnect power to the boiler at the service disconnect before replacing any fuses or accessing the control board. Confirm the replacement fuse matches the original amperage and voltage ratings exactly. Using an incorrectly rated fuse can void equipment warranties and create unsafe operating conditions.

Technical Specifications

• Amperage: 3.15 amps
• Voltage Rating: 250 volts
• Fuse Type: LFT (slow-blow)

Standard Information

• Brand: NTI
• Manufacturer Part Number: 99986998