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TFTN Series

The TFTN Series builds on the proven performance of our flagship TFT boiler line, delivering the quality, reliability, and contractor-friendly design installers expect from NTI. Available in sizes 85, 110, 150, and 199 MBH, with larger models from 285 to 850 MBH for commercial applications, the TFTN Series offers a versatile solution for a wide range of residential and commercial heating needs.

Key Features

  • Top and Bottom plumbing connections for easy installation
  • Built-in Low Water Cutoff, saving time and money
  • 120v convenience outlet
  • Built-in zone control – up to 3 Heating zones plus Domestic Hot Water (Expandable to six heating zones using the optional N-Link Zone Expansion Module - part # 87633-1)
EZ Set up Wizard
Easy configuration and effortless setup with NTI’s intuitive control interface. Multiple language options are available in the settings.
Wi-Fi Connectivity
NTI net gives contractors 24/7 Wi-Fi access to monitor, diagnose, and manage single or multi-boiler installations in real time. It helps resolve issues faster with remote settings adjustments, error history, proactive email alerts, and Tech Support diagnostic access.
Cascade-Ready Performance
Seamlessly connect up to 8 boilers to operate as a single, intelligent system - automatically staging units on and off to match demand, improve efficiency, extend equipment life, and provide built-in redundancy for uninterrupted heating.
TFTN Unit
TFTN Unit Screen
TFTN Unit Screen Closeup
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specifications

Wall Mount

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Product comparison
TFTN085,TFTN110,TFTN150,TFTN199,TFTN285,TFTN340,TFTN399
Input Heating MBH
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AFUE/Thermal Efficiency
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Heating Capacity (MBH)
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Net AHRI Rating (MBH)
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Weight (lbs.) With Water
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Water Connections (heating)
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Gas Connection
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2" Inlet & Exhaust Distance
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3" Inlet & Exhaust Distance
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4" Inlet & Exhaust Distance
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specifications

Floor Mount

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Product comparison
TFTN500,TFTN600,TFTN725,TFTN850
Input Heating MBH
fm_input_heating_mbh
AFUE/Thermal Efficiency
fm_afue_thermal_efficiency
Heating Capacity (MBH)
fm_heating_capacity_mbh
Net AHRI Rating (MBH)
fm_net_ahri_rating_mbh
Weight (lbs.) With Water
fm_weight_lbs_with_water
Water Connections (heating)
fm_water_content_gallons
Gas Connection
fm_gas_connection
4" Inlet & Exhaust Distance
fm_inlet_exhaust_distance_4in
6" Inlet & Exhaust Distance
fm_inlet_exhaust_distance_6in

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<h2 class="accent" style="text-align: center;">Rebates</h2>

<p style="text-align: center;">Find available rebates and incentives for this product in your area.</p>

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Connecting Your Boiler To Wi-Fi

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https://www.youtube.com/watch?v=dBFi35uy5Qc
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Wiring Your New Boiler

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https://www.youtube.com/watch?v=dBFi35uy5Qc
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TFTN Cascade Setup

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https://www.youtube.com/watch?v=nGmpVOLKuqk
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Warranty

To obtain Warranty compensation you must be able to provide the defective water heater (Ensure that all the parts & rating label are intact) or the defective part(s) replaced; the complete model number and serial number of the new water heater or the water heater from which the defective part(s) was removed; and proof of the date of installation of the defective product(s) replaced. For complete details, refer to your Warranty.
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Accessories

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The N-Link (3-Zone Control Module) is designed to connect to TFTN series boilers, enabling the…
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