NTI Vmax VM153 User Manual

Vmax Boiler
Model Number: VM110, VM110P,
VM153 & VM153P
Version Date: 2018-12-12
INSTALLATION AND OPERATION MANUAL
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 .................................................................................................... 26
7.0 INSTALLING GAS PIPING .............................................................................................. 28
8.0 LIGHTING THE BOILER ................................................................................................. 30
9.0 GAS VALVE AND BURNER SET-UP ............................................................................ 33
10.0 BOILER AND HEATING SYSTEM PIPING ................................................................... 36
11.0 DOMESTIC HOT WATER (DHW) PIPING .................................................................... 52
12.0 FIELD WIRING ................................................................................................................. 55
13.0 CASCADE INSTRUCTIONS ............................................................................................ 58
14.0 WIRING SCHEMATICS ................................................................................................... 61
15.0 INSTALLATION CHECKLIST ........................................................................................ 63
16.0 ANNUAL MAINTENANCE AND INSPECTION ........................................................... 64
17.0 DISPLAY MENU GUIDE ................................................................................................. 66
18.0 TROUBLESHOOTING ..................................................................................................... 79
19.0 PARTS LIST ...................................................................................................................... 82
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 # 85171
H

NTI Vmax VM153 Specifications

General

Brand	NTI
Model	Vmax VM153
Category	Boiler
Language	English

Summary

Introduction

General Installation Requirements

Details general requirements for installing the NTI Vmax gas boiler according to codes.

User Responsibilities

Outlines the responsibilities of the user/owner for boiler maintenance and inspection.

Installer Responsibilities

Details the installer's responsibilities for proper installation and owner notification.

Specifications

High Altitude Operation

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

Boiler Location

Ventilation Requirements

Details requirements for boiler area ventilation openings, closet and alcove installations.

Installation Types

Covers residential garage and wall mounting installation guidance.

General Venting

Removing Existing Vent Systems

Guidance on safely removing boilers from common venting systems.

Combustion Air Contamination

Information on avoiding contaminants in combustion air intake.

Plastic Venting Procedures

Mandatory procedures for installing plastic venting systems.

Venting Rules and Guidelines

Covers general rules for venting installation and termination.

Vent/Air-Inlet Termination Clearances

Termination Clearance Diagrams

Illustrations and reference table for vent and air-inlet termination clearances.

Condensate Drain

Condensate Trap Installation

Instructions for installing the factory-supplied condensate trap.

Installing Gas Piping

Gas Piping Installation

Guidelines and recommendations for installing gas piping to the boiler.

Lighting the Boiler

Safety Before Operation

Essential safety precautions and procedures to read before operating the boiler.

Boiler Operating Instructions

Step-by-step instructions for safely operating the Vmax boiler.

Initial Start-Up Procedure

Detailed steps for the initial start-up of the boiler.

Gas Valve and Burner Set-Up

Gas Line Pressure Measurement

Procedure for measuring and verifying gas line pressure.

Burner Adjustment Procedures

Guidance on adjusting burner operation and flue gas analysis.

Boiler and Heating System Piping

System Preparation and Water Quality

Boiler system preparation, water chemistry, and treatment guidelines.

Near Boiler Plumbing

Details on near-boiler piping for central heating systems.

Low Water Cutoff (LWCO)

Information on installing and testing the Low Water Cutoff device.

Domestic Hot Water (DHW) Piping

DHW Operation and Connections

Description of DHW operation and necessary plumbing connections.

Safe Water Temperatures

Guidance on safe water temperatures to prevent Legionella and scalding.

Field Wiring

Power Supply and Connections

Instructions for field wiring, power supply, and terminal connections.

Cascade Instructions

Cascade Configuration

Steps for setting up and installing cascade systems with multiple boilers.

Wiring Schematics

Vmax Connection Diagram

Schematic illustrating wiring connections for the Vmax boiler.

Installation Checklist

Installation Steps

Checklist items for the proper installation of the boiler.

Start-Up and Operational Checks

Checklist for verifying correct operation after installation.

Annual Maintenance and Inspection

Annual Inspection Checklist

Checklist items for the annual maintenance inspection of the boiler.

Combustion Chamber Cleaning

Procedure for cleaning the boiler's combustion chamber.

Display Menu Guide

Boiler Display Navigation

Overview of the boiler display, main screen, and user menu.

Installer Menu Settings

Details on accessing and adjusting installer menu settings.

Lockout and Error Handling

Information on accessing and interpreting boiler lockouts and errors.

Troubleshooting

Boiler Servicing Precautions

Essential safety precautions to observe when servicing the boiler.

Diagnosing Boiler Issues

Guidance for troubleshooting common boiler operational problems.

Blank Display Troubleshooting

Steps to diagnose issues when the boiler display is blank.

No Heat Troubleshooting

Steps to diagnose issues when the boiler provides no heat.

DHW Issues Troubleshooting

Steps to diagnose and resolve domestic hot water problems.