TRX Series

The TRX is a high-efficiency, wall-hung boiler equipped with an Innovative XTRATECH® stainless steel heat exchanger with large diameter tubing. Every unit is equipped with embedded Wi-Fi connectivity so that the TRX control can easily communicate with NTI remote connectivity tools, making servicing easier. All internal components utilize bayonet quick connectors, eliminating the need to braze or solder within the unit. Swing down control box greatly enhances serviceability, making all major components easily accessible.

Main Features

Models up to 96% AFUE

Modulating Combustion up to 11:1

Wi-Fi on board for remote control and monitoring

Integrated ECM pump and DHW diverter valve on all models

Small zone valve systems may not require an additional pump or a low loss header

Easy service access and quick component connections

Videos

NTI TRX Condensing Wall Hung Boiler

Central Heating Quick Setup for NTI TRX Boiler

Programming Domestic Hot Water setting on NTI TRX Boiler

How to put the TRX Boiler into Test Mode

How to Retrieve the NTI Wi-Fi Serial Number

Adjusting the Combustion Post Purge on TRX

Specifications

MODELTRX085TRX120TRX110CTRX150CTRX150
*NEW*
TRX199
*NEW*
TRX199C
*NEW*
Space Heating
Minimum / Maximum Input (Btu/Hr)
9,400 / 85,00013,200 / 120,00011,200 / 106,00013,200 / 120,00015,000 / 150,000NG19,700 / 197,000

LP 19,200 / 192,000
NG 19,700 / 197,000

LP 19,200 / 192,000
Domestic Hot Water
Minimum / Maximum Input (Btu/Hr)
11,200 / 114,00013,200 / 150,000
DOE AFUE (%)969595.595959595
Heating capacity7911198111139184184
Net AHRI Rating69978597121160160
DHW Flow Rating (at 77°F rise, gpm)N/AN/A2.73.5N/AN/A4.8
Installation typeIndoor, Wall Hung, Fully CondensingIndoor, Wall Hung, Fully CondensingIndoor, Wall Hung, Fully CondensingIndoor, Wall Hung, Fully CondensingIndoor, Wall Hung, Fully CondensingIndoor, Wall Hung, Fully CondensingIndoor, Wall Hung, Fully Condensing
Weight (lbs.)88.288.69192.8115130135
Gas connection3/4” Male NPT3/4” Male NPT3/4” Male NPT3/4” Male NPT3/4” Male NPT3/4” Male NPT3/4” Male NPT
CH connections1” Male Sweat with Adapter1” Male Sweat with Adapter1” Male Sweat with Adapter1” Male Sweat with Adapter1 1/4” Male NPT1 1/4” Male NPT1 1/4” Male NPT
DHW connectionsN/AN/A3/4” Male Sweat with Adapter3/4” Male Sweat with AdapterN/AN/A3/4” Male NPT
FlueCategory IV, Sealed Combustion Direct Vent, Power VentCategory IV, Sealed Combustion Direct Vent, Power VentCategory IV, Sealed Combustion Direct Vent, Power VentCategory IV, Sealed Combustion Direct Vent, Power VentCategory IV, Sealed Combustion Direct Vent, Power VentCategory IV, Sealed Combustion Direct Vent, Power VentCategory IV, Sealed Combustion Direct Vent, Power Vent
Minimum - Maximum Exhaust Vent Run2” (6 - 100 feet), 3” (6 - 150 feet)2” (6 - 100 feet), 3” (6 - 150 feet)2” (6 - 100 feet), 3” (6 - 150 feet)2” (6 - 100 feet), 3” (6 - 150 feet)2” (6 - 100 feet) / 3” (6 - 150 feet)3” (6 - 150 feet)3” (6 - 150 feet)
Minimum - Maximum Intake Air Pipe Run2” (0 - 100 feet), 3” (0 - 150 feet)2” (0 - 100 feet), 3” (0 - 150 feet)2” (0 - 100 feet), 3” (0 - 150 feet)2” (0 - 100 feet), 3” (0 - 150 feet)2” (0 - 100 feet) / 3” (0 - 150 feet)3” (0 - 150 feet)3” (0 - 150 feet)
Shipping Weight (lbs)78848384115125130
Power Supply120V, 60 Hz, less than 12A120V, 60 Hz, less than 12A120V, 60 Hz, less than 12A120V, 60 Hz, less than 12A120V, 60 Hz, less than 12A120V, 60 Hz, less than 12A120V, 60 Hz, less than 12A

Manuals & Guides

TRX Installation and Operation Manual (TRX085, 110C, 120, 150C)

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TRX Installation and Operation Manual (TRX150, 199, 199C)

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TRX Series Brochure

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TRX Series Brochure (FR)

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TRX085 & 120 Submittal

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TRX110C & 150C Submittal

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TRX150 & 199 Submittal

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TRX199C Submittal

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TRX User Manual

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TRX Quick Installation Guide

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TRX Connectivity Quick Start Guide

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TRX Natural to Propane Conversion Instructions

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TRX Accessory Box

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TRX Parts List (TRX085, 110C, 120, 150C)

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TRX Parts List (TRX150, 199, 199C)

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