Laars JVS - User Manual

M
INI-
THERM
LAARS
H0071400Y
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualified in hot water boiler installation and maintenance. Improper installation and/or operation could
create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death.
Improper installation and/or operation will void the warranty.
Installation and Operation Instructions Document 1025Y
WARNING
If the information in this manual is not
followed exactly, a fire or explosion may
result causing property damage, personal
injury or loss of life.
Do not store or use gasoline or other
flammable 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 fire department.
Installation and service must be performed by
a qualified installer, service agency, or gas
supplier.
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 inflammables 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 qualifié ou
par le fournisseur de gaz.
Installation and Operation
Instructions for
Mini-Therm II
TM
Residential
Gas-Fired
Hydronic Boilers
Models JVS, JVT
Sizes 50-225
U.S. Patent No. 1,609,692
Canada Patent No. 383,318
Vent damper is optional in some provinces of Canada.
These instructions are to be stored in the packet
provided on the boiler.
A subsidiary of BRADFORD WHITE

Summary

SECTION 1. General Information

1.1 Introduction

Provides overview of Laars JV boilers, installation, operation, and maintenance procedures.

1.2 Warranty

Details the limited warranty for Laars Model JV boilers and claim procedures.

1.3 Codes and Standards

Outlines compliance with national and local codes for boiler installation.

1.4 Technical Assistance

Provides contact information for Laars Heating Systems for technical support.

1.5 Materials Installer Must Provide

Lists materials required for installation, including those for all and most installations.

1.6 Specifications

Details general specifications and dimensions for the boiler.

SECTION 2. Installation Instructions

2.1 Introduction

Warns about dangers of improper installation and outlines installation requirements.

2.2 Field Assembly

Details the installation of the vent damper and temperature/pressure gauge.

2.3.1 Clearances

Specifies minimum clearances from combustible surfaces for boiler maintenance and inspection.

2.3.2 Flooring

Describes requirements for boiler installation on various floor types, including combustible floors.

SECTION 3. Venting

3.1 Combustion Air Supply

Outlines requirements for boiler room ventilation and air supply openings.

3.2 Exhaust Venting

Details vent pipe sizing requirements and installation procedures.

3.3 Vent Pipe Sizing and General Installation

Covers vent pipe sizing, general installation, and chimney connection requirements.

3.4 Common Venting Systems

Discusses common venting for multiple appliances and associated safety concerns.

3.4.1 Venting Multiple Appliances

Emphasizes safety precautions when common venting multiple appliances.

3.4.2 Inspection of Commonly Vented Appliances

Provides steps for inspecting appliances connected to a common venting system.

SECTION 4. Gas Connections

4.1 Gas Supply and Piping

Reviews general instructions for gas supply and piping installation.

4.2 Special Precautions for LP Gas

Highlights safety precautions for installing and operating with LP gas.

SECTION 5. Water Connections

5.1 Water Piping

Provides guidance on typical plumbing installations and isolation valves.

5.1.1 By-pass Piping

Discusses the importance and installation of by-pass piping for water flow.

5.2 Alternate Auto-Bypass Operation

Explains the use of a thermostatic union for automatic bypass operation.

5.3 Flow Requirements

Details pump selection and system flow requirements for efficient boiler operation.

SECTION 6. Electrical

6.1 General Information

Discusses wiring connections, grounding, and bonding requirements.

6.2 Main Power

Covers electrical supply requirements and connection procedures for 115V AC.

SECTION 7. Operating Instructions

7.1 Normal Operation

Describes the automatic operation cycle and safety systems of the boiler.

7.2 Start-up

Details the procedures for filling the system and starting up the boiler safely.

7.2.1 Filling the System

Provides step-by-step instructions for filling the hydronic system and purging air.

7.2.2 Boiler Start-up

Outlines safety precautions and steps for safely starting the boiler.

7.3 Lighting and Shutdown Procedures

Covers procedures for lighting the boiler and safely shutting it down.

7.3.1 Lighting the Boiler

Provides step-by-step instructions for lighting the boiler.

7.3.2 Shutdown

Details procedures for both main burner and complete shutdown of the boiler.

7.4 High Altitude Burner Air Shutter Adjustment

Explains the procedure for adjusting air shutters for high altitude operation.

SECTION 8. Maintenance

8.1 General Maintenance

Discusses general maintenance procedures and safety warnings for servicing.

8.2 Boiler Components and Their Operation

Explains the function and operation of key boiler components like gas valves.

SECTION 9. Troubleshooting

9.1 General Boiler Troubleshooting

Lists common problems, causes, and solutions for boiler operation issues.

9.2 Troubleshooting Guide

A detailed guide to diagnosing and resolving various boiler symptoms and issues.

9.3 Troubleshooting Honeywell S8600 Intermittent Pilot System

Provides a flowchart for troubleshooting the S8600 intermittent pilot ignition system.

9.4 Electrical Troubleshooting

Outlines procedures for troubleshooting electrical issues in the boiler system.

SECTION 10. Glossary

10.1 Glossary of Terms

Defines common terms used in the manual related to hydronic systems and boiler operation.

SECTION 11. Replacement Parts

11.1 Ordering Information

Guides users on how to order replacement parts for Laars boilers.

11.2 Parts List

Refers to subsequent pages for a parts list and exploded view for identification.

Laars JVS Specifications

General

Category	Boiler
Brand	Laars
Model	JVS
Fuel Type	Natural Gas or Propane
Vent Diameter	Varies by model