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NTI Trinity TX151(C) User Manual

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Trinity Tx
Model Numbers: Tx 51 - 200
Version Date: 2014-08-28
INSTALLATION AND OPERATION
INSTRUCTIONS FOR TRINITY Tx BOILER
TABLE OF CONTENTS
1.0 INTRODUCTION ................................................................................................................ 3
2.0 SPECIFICATIONS .............................................................................................................. 6
3.0 BOILER LOCATION .......................................................................................................... 7
4.0 GENERAL VENTING ....................................................................................................... 10
5.0 VENT/AIR-INLET TERMINATION CLEARANCES ..................................................... 24
6.0 CONDENSATE DRAIN .................................................................................................... 27
7.0 INSTALLING GAS PIPING .............................................................................................. 29
8.0 LIGHTING THE BOILER ................................................................................................. 31
9.0 GAS VALVE AND BURNER SET-UP ............................................................................ 34
10.0 BOILER AND HEATING SYSTEM PIPING ................................................................... 37
11.0 DOMESTIC HOT WATER (DHW) PIPING TX151C & TX200C (COMBI) ............... 48
12.0 FIELD WIRING ................................................................................................................. 52
13.0 CASCADE INSTRUCTIONS ............................................................................................ 55
14.0 WIRING SCHEMATICS ................................................................................................... 57
15.0 INSTALLATION CHECKLIST ........................................................................................ 59
16.0 ANNUAL MAINTENANCE AND INSPECTION ........................................................... 60
17.0 DISPLAY MENU GUIDE ................................................................................................. 62
18.0 TROUBLESHOOTING ..................................................................................................... 74
19.0 PARTS LIST ...................................................................................................................... 77
HAZARD SYMBOLS AND DEFINITIONS
Danger Sign: Indicates a hazardous situation which, if not avoided, will
result in serious injury or death.
Warning Sign: Indicates a hazardous situation which, if not avoided,
could result in serious injury or death.
Caution Sign plus Safety Alert Symbol: Indicates a hazardous situation
which, if not avoided, could result in minor or moderate injury.
Caution Sign without Safety Alert Symbol: Indicates a hazardous
situation which, if not avoided, could result in property damage.
Notice Sign: Indicates a hazardous situation which, if not avoided,
could result in property damage.
This Boiler must be installed by a licensed and trained Heating
Technician or the Warranty is Void. Failure to properly install this
unit may result in property damage, serious injury to occupants, or possibly death.
NTI # 84874
NEW PRODUCT LINE
High Efficiency
Condensing Gas Boiler
H

Table of Contents

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NTI Trinity TX151(C) Specifications

General IconGeneral
Efficiency95%
Modulation Ratio10:1
Maximum Input (Natural Gas)151, 000 BTU/h
Maximum Input (Propane)151, 000 BTU/h
Boiler TypeCondensing
Heat Exchanger MaterialStainless Steel
Fuel TypeNatural Gas, Propane
Vent Size2"
Water Connection Size1 inch
Gas Connection Size3/4 inch

Summary

1.0 Introduction

General Installation Requirements

General requirements for NTI Trinity Tx gas boiler installation, codes, and standards.

User Responsibilities

Outlines owner/user responsibilities for installation, servicing, and maintenance.

Installer Responsibilities

Details technician's duty to ensure compliance with manual and codes.

Exhaust Vent / Air-Inlet Piping

Requirements for Category IV boiler special venting system for outdoor exhaust.

Massachusetts Installation Requirements

Specific codes for gas equipment venting, CO detectors, and signage in MA.

2.0 Specifications

High Altitude Operation

Guidance on de-rating boiler capacity for installations above 2000 ft.

3.0 Boiler Location

Boiler Area Ventilation Air Openings

Specifies minimum requirements for ventilation openings based on boiler input.

Closet Installations

Clearance and ventilation requirements for boiler installations in closets.

Alcove Installations

Clearance and ventilation guidelines for boilers installed in alcoves.

Residential Garage Installations

Safety and clearance requirements for boiler installation in garages.

Wall Mounting Installations

References for instructions and illustrations for wall mounting the boiler.

4.0 General Venting

Combustion Air Requirements

Specifies opening sizes and locations for indoor/outdoor combustion air.

Venting System Options

Details termination kits and direct vent installation options for exhaust and air inlet.

Venting Rules and Guidelines

General rules for vent sloping, supports, separation, and termination.

Combustion Air-inlet Contamination

Avoiding air contaminants to prevent heat exchanger corrosion and damage.

5.0 Vent/Air-Inlet Termination Clearances

Termination Clearances Table

Quick reference table for air-inlet and exhaust vent termination clearances.

Sidewall Termination Illustrations

Visual guide to sidewall termination clearance requirements.

6.0 Condensate Drain

Condensate Trap Installation

Instructions for installing the condensate trap and drain system.

7.0 Installing Gas Piping

Gas Piping Installation

Procedures and requirements for connecting the boiler to the gas supply.

8.0 Lighting the Boiler

For Your Safety

Critical safety warnings and procedures before operating the boiler.

Operating Instructions

Step-by-step guide for lighting and operating the boiler.

Initial Start-Up Procedures

Steps for the boiler's initial power-up and de-air sequence.

Re-lighting the Boiler

Instructions for safely re-lighting the boiler if it fails to ignite.

9.0 Gas Valve and Burner Set-up

Gas Line Pressure Measurement

Procedure for checking gas supply line pressure and regulators.

Throttle/Input Adjustment

Guidance on adjusting the throttle/input screw for burner performance.

Combustion Calibration and Flue Gas Analysis

Steps for calibrating burner operation and analyzing flue gas composition.

10.0 Boiler and Heating System Piping

Boiler System Preparation and Water Quality

Instructions for system flushing, cleaning, and water chemistry.

Boiler Plumbing and Circulators

Requirements for boiler plumbing, circulator sizing, and flow rates.

Near Boiler Plumbing

Details on pressure relief valve, gauge, and LWCO installation connections.

Air Removal and Expansion Tank

Importance of air removal devices and proper expansion tank sizing.

Indirect Fired Water Heater

Plumbing configurations for integrating indirect fired water heaters.

11.0 Domestic Hot Water (DHW) Piping (Combi)

Combi DHW Plumbing and Operation

Setup, operation, and features of the Combi model's DHW system.

DHW Limitations and Setup

Understanding DHW flow limits and procedures for optimal delivery.

12.0 Field Wiring

Wiring Connections and Terminals

Details on electrical connections, terminals, and wiring safety.

13.0 Cascade Instructions

Cascade System Setup and Communication

Instructions for setting up boiler cascades, managing boiler, and communication.

Plumbing, Sensors, and Pump Control

Requirements for cascade plumbing, sensors, and pump control logic.

14.0 Wiring Schematics

Connection Diagrams

Visual representation of boiler wiring and connections.

15.0 Installation Checklist

Pre-Installation Checks

Items to verify before beginning the boiler installation.

Start-up and Operational Checks

Steps for boiler start-up and verifying proper operation.

Final Checks and Contractor Instructions

Final checks before leaving and instructions for the installer.

16.0 Annual Maintenance and Inspection

Annual Inspection Checklist

Checklist for routine annual maintenance and inspection procedures.

Combustion Chamber Cleaning

Procedure for cleaning the combustion chamber and heat exchanger.

Refractory Ceramic Fibers Handling

Safety and handling instructions for RCF materials in the combustion chamber.

17.0 Display Menu Guide

Boiler Display Interface Overview

Explanation of the boiler's display, main screen, and menu navigation.

Installer Menu Settings and Navigation

Guide to adjusting boiler settings via the installer menu interface.

Lockout, Error Codes, and Troubleshooting

Understanding lockouts, error codes, and low water pressure indications.

Controller Replacement

Instructions for replacing the boiler controller and setting appliance type.

18.0 Troubleshooting

Diagnosing Boiler Issues

Steps for troubleshooting common boiler problems like no heat or blank display.

Troubleshooting DHW and Error Codes

Addressing DHW issues and interpreting error codes.

19.0 Parts List

Parts Identification Diagrams

Visual identification of boiler components through diagrams.

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