NTI Lx150-400 - User Manual

Trinity Lx
Model Numbers: Lx150-400
Version Date: 2010-01-01
INSTALLATION AND OPERATION INSTRUCTIONS FOR
TRINITY LX SERIES
This manual to be read in conjunction with the following documents which
provide specific instructions for controller setup, plumbing and wiring:
Appendix A - Controller and Touchscreen Display Instructions
Appendix B - Boiler Applications: Plumbing and Wiring
Appendix C - Water Heater Applications: Plumbing and Wiring
TABLE OF CONTENTS
1.0
INTRODUCTION................................................................................................................3
2.0
SPECIFICATIONS ..............................................................................................................6
3.0
APPLIANCE LOCATION...................................................................................................7
4.0
GENERAL VENTING.......................................................................................................11
5.0
VENT/AIR-INTAKE TERMINATION CLEARANCES..................................................20
6.0
CONDENSATE DRAIN....................................................................................................24
7.0
INSTALLING GAS PIPING..............................................................................................25
8.0
LIGHTING THE APPLIANCE .........................................................................................27
9.0
GAS VALVE AND BURNER SET-UP ............................................................................29
10.0
WIRING SCHEMATICS...................................................................................................34
11.0
INSTALLATION CHECKLIST ........................................................................................36
12.0
ANNUAL MAINTENANCE AND INSPECTION ...........................................................37
13.0
PARTS LIST ......................................................................................................................39
14.0
TROUBLESHOOTING .....................................................................................................45
HAZARD SYMBOLS AND DEFINITIONS
Danger Sign: I
ndicates a hazardous situation which, if not avoided, will
result in serious injury or death.
Warning Sign: Indi
cates a hazardous situation which, if not avoided,
could result in serious injury or death.
Caution Sign plus Safety Alert Symbol: I
ndicates 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: I
ndicates a hazardous situation which, if not avoided,
could result in property damage.
This Appliance 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.
®
NEW FEATURES
Second Central Heat Input
Internal Lead-Lag Control
System Sensor
Modulation Sensor Alternatives
Warm Weather Shutdown

Summary

Hazard Symbols and Definitions

Danger and Warning Symbol Meanings

Explains the meaning of Danger, Warning, and Caution symbols used in the manual.

5.0 Vent;Air-Intake Termination Clearances

Termination Clearances Quick Reference

7.0 Installing Gas Piping

LP Gas Conversion and Piping Requirements

Gas Piping Installation Best Practices

8.0 Lighting the Appliance

Safety Precautions Before Lighting

Critical safety warnings and procedures before operating the appliance.

Appliance Operating Instructions

Step-by-step guide for starting and operating the Trinity Lx appliance.

Turning Off the Gas Supply

9.0 Gas Valve and Burner Set-Up

Gas Line Pressure Measurement and Adjustment

Procedure for measuring and adjusting gas line pressure for optimal operation.

Combustion Calibration and Analysis

Calibrating burner operation using flue gas analysis and CO2/CO measurements.

11.0 Installation Checklist

Pre-Start-up Installation Checklist

Ensures all installation steps are completed before appliance start-up.

Operational Checklist and Leak Testing

Verifies system integrity, flow, pressure, and combustion after installation.

12.0 Annual Maintenance and Inspection

Annual Inspection Checklist

A checklist for qualified technicians performing annual inspections.

Combustion Chamber Cleaning Procedure

Step-by-step instructions for cleaning the combustion chamber and heat exchanger.

14.0 Troubleshooting

General Servicing Precautions

Electrical Checks: 120 VAC, 24 VAC, and Fuses

Display and Controller Troubleshooting

Troubleshooting Chart: Problems, Causes, and Solutions

A comprehensive table of common problems, their causes, and corrective actions.

Alert Codes and Descriptions

Lists and explains various alert codes generated by the appliance controller.

NTI Lx150-400 Specifications

General

Category	Water Heater
Brand	NTI
Model	Lx150-400
Type	Tankless
Energy Source	Natural Gas
Efficiency	95%
Temperature Range	85°F - 185°F