Laars NTH1000 - User Manual

Installation and Operation Instructions Document 1255B
H2352900B
WARNING
If the information in this manual is not
followed exactly, a re or explosion may
result causing property damage, personal
injury or loss of life.
Do not store or use gasoline or other
ammable vapors and liquids in the vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
nearby phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call
the re department.
Installation and service must be performed
by a qualied installer, service agency, or gas
supplier.
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualied in hot water boiler and heater installation and maintenance. Improper installation and/or operation
could create carbon monoxide gas in ue gases which could cause serious injury, property damage, or
death. Improper installation and/or operation will void the warranty.
AVERTISSEMENT
Assurez-vous de bien suivres les instructions
données dans cette notice pour réduire au
minimum le risque d’incendie ou d’explosion ou
pour éviter tout dommage matériel, toute blessure
ou la mort.
Ne pas entreposer ni utiliser d’essence ni d’autres
vapeurs ou liquides inammables dans le
voisinage de cet appareil ou de tout autre appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:
• Ne pas tenter d’allumer d’appareils.
• Ne touchez à aucun interrupteur. Ne pas vous
servir des téléphones dansle bâtiment où vous
vous trouvez.
• Appelez immédiatement votre fournisseur de
gaz depuis un voisin. Suivez les instructions du
fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de
gaz, appelez le sservice des incendies.
L’installation et l’entretien doivent être assurés par
un installateur ou un service d’entretien qualié ou
par le fournisseur de gaz.
Installation and
Operation Instructions for
NEOTHERM
®
LC
Modulating Boiler Water Heater
Model NTH1000 Model NTV1000
1,000 MBTU/h 1,000 MBTU/h
Model NTH1700 Model NTV1700
1,700 MBTU/h 1,700 MBTU/h

Summary

General Information

Safety Notes

Details critical safety warnings regarding fire, explosion, CO, and electrical hazards.

Venting and Combustion Air

Combustion Air

Details requirements for providing combustion and ventilation air.

Venting

General requirements and material specifications for venting systems.

Gas Supply and Piping

Gas Supply and Piping

Guidelines for gas supply line sizing, installation, and connections.

Electrical Connections

Main Power

Instructions for connecting the main power supply to the unit.

Pump Connections

Details on connecting system and DHW pumps.

Ladder and Wiring Diagrams

Provides schematic diagrams for electrical connections.

Using the Touch Screen and Gauges

Using the Touch Screen

Guide to navigating and operating the boiler via the touch screen.

Checking Lead;Lag Operating Information

How to monitor the status of the lead/lag system operation.

Checking the Lead;Lag Master

Steps to review the details of the lead/lag system setup.

Checking Individual Parameters

How to check functions on individual controllers within the system.

Checking Individual Details

Accessing and reviewing controller setup parameters.

Configuring Parameters on Individual Controllers

Procedure for changing settings on a single controller.

Verification Process for Safety Related Parameters

Steps for verifying safety-related parameter changes.

Setup and Configuration

Review of Lead;Lag Control System

Overview of the lead/lag control system architecture.

About Lead;Lag Operation

Explanation of how the lead/lag system manages multiple boilers.

Lead;Lag Modulation Cycle

Details on how the system modulates burner output based on demand.

NeoTherm LC System Configurations

Lists common system configurations and corresponding installation steps.

Installation Jobs

Detailed, step-by-step procedures for various installation scenarios.

Setup for Domestic Hot Water on a Lead;Lag System

Describes three methods for setting up domestic hot water.

Installer Parameters

A list of parameters configurable by the installer.

Initial Startup Instructions

Filling the Boiler System

Procedure for filling the boiler system with water and bleeding air.

Initial Operation

Initial Burner Operation

Combustion Setup Procedure

Instructions for setting gas valve and CO2 levels for optimal combustion.

Maintenance

System Maintenance

Burner

Modulating Gas Valve; Venturi

Controllers

Ignitor Assembly

Flame Sensor

Blower

Heat Exchanger Coils

Troubleshooting

Potential Setup and Synchronization Problems

Common issues related to setup and controller synchronization.

Controller Synchronization

Explanation of the controller synchronization process.

Flap Valve Status Check

Procedure for checking flap valve status and potential faults.

About Lockouts, Holds, and Alerts

Explanation of different system trouble indications.

Responding to a Lockout, Hold, or Alert

How to respond to system lockout, hold, or alert conditions.

Viewing the Lockout and Alert Histories

Troubleshooting Table

A comprehensive table of faults, codes, and corrective actions.

Diagnostic Tests and Input;Output Indicators

Lead;Lag Slave Diagnostics

Analysis

Control Snapshot

Operating Sequence

Laars NTH1000 Specifications

General

Brand	Laars
Model	NTH1000
Category	Boiler
Language	English