NTI TFTN Series

Delivering State-of-the-Art Functionality and Flexibility

NTI’s new TFTN residential & light commercial boilers deliver unprecedented functionality with a proprietary control that is intuitive and easy to program, and onboard Wi-Fi. Using the same legendary reliability, quality construction and state-of-the-art technology that were at the heart of the TFTN’s predecessor, the TFT, you can trust the TFTN to deliver.

Large color touchscreen
The TFTN features an impressive, high-quality 7" color touchscreen and robust new control designed for improved precision and efficiency with easy-to-read graphics. It features NTI’s newly designed EZ Set Up Wizard, designed with input from contractors, to deliver intuitive, and quick set up and performance.

Remote access and monitoring
The TFTN is Wi-Fi enabled to allow remote diagnostic and 24/7 monitoring via the NTI Remote Contractor web-based diagnostic service capability:

• Contractors can remotely manage single and multi-boiler TFTN installations
• Accessible data includes boiler readings, settings, status, history, statistics, troubleshooting and more, in real time, in an easy-to-view format
• All settings are remotely adjustable, and all changes tracked
• Service issues can be investigated remotely through viewing any past or current boiler errors
• Blocking errors promptly trigger an email notification allowing contractors to proactively notify customers of service issues with viewable log graph for easy reference
• NTI’s Tech Support can connect to view boiler diagnostics

Industry-proven, down-fired fire tube technology
The TFTN’s stainless steel heat exchanger is ASME certified and uses down-fired fire tube technology, an industry-proven design that optimizes heat transfer and increase energy efficiency.
The fire tube provides generous space for flue gas to pass and significantly reduces the need for cleaning due to its vertical configuration and operates cleaner during condensing mode.

Features

• BACnet capable with added accessories
• Ability to control a variable speed boiler pump via 0-10V or PWM signal for maximum efficiency
• Lead lag up to 8 boilers
• Three 24VAC T-Stat inputs
• DHW recirculation control at the boiler or remotely
• Alarm output contact
• 0-10V input for external set point/external burner control
• 0-10V output to provide proportional firing rate
• 4 sensor inputs (outdoor, DHW, 2 auxiliary)
• 3 zone outputs (120V or 24V)
• Total 7 pump outputs: 3 zone, 1 DHW, 1 boiler, 2 auxiliary pumps (recirculation, system, buffer)

TFTN Wall Mount

Performance & Design

• Sizes 85 to 285: 95-96% AFUE
• Sizes 340 to 399: 95.4% Thermal Efficiency
• 50 or 80 psi MAWP depending on the size
• 10:1 turndown ratio*
• Sealed cabinet for improved performance

Service & Features

• Remote access via NTInet
• Internal water pressure sensor for remote pressure monitoring
• Built-in low water cut-off with test button
• Maximum cabinet space for easy serviceability
• High output ignition transformer

Operation

• Quiet operation with integrated silencer and air filter
• Built-in 3-zone control, valves or pumps (expand to 6 heating zones using optional N-Link 3 zone expansion module)
• DHW input with programmable priority (tank thermostat or sensor)
• Anti-legionella function

Installation

• Top or bottom supply and return connections
• Direct vent certified or use with indoor combustion air
• Balanced or unbalanced vent/air termination
• 120V convenience outlet

TFTN Floor Mount

Includes all the features of the wall-mount sizes, but with differences in specifications and performance, connections and switches:

• 97-97.7% Thermal Efficiency
• 160 psi MAWP
• 10:1 turndown ratio
• All connections are in the back, including the exhaust and air intake
• Isolation relays for pumps and gas valve/dry contact
• CSD-1-ready with high and low gas pressure switches
• Leveling legs
• Only 28" wide: fits through a standard door

NTI TFTN Documents:
Brochure  |   85-399 Installation Manual  |   500-850 Installation Manual
85-199 LP Conversion Instructions  |   285-399 LP Conversion Instructions
500-850 LP Conversion Instructions  |   Cascading Instructions
85-199 Parts List  |   285-399 Parts List  |   500-850 Parts List
85-199 Suggested Specification  |   285 Suggested Specification  |   340 Suggested Specification
399 Suggested Specification  |   500-850 Suggested Specification
85-110 Submittal  |   150-199 Submittal  |   285 Submittal
340-399 Submittal  |   500-600 Submittal  |   725-850 Submittal
Water Best Practices  |   Warranty Information