Laars Mini-Therm JVH - User Manual

Installation and Operation Instructions Document 1254
Installation and
Operation Instructions for
Mini-TherM
Residential
Gas-Fired
Hydronic Boilers
Models JVH, JVS
These instructions are to be stored next to the boiler for reference purposes.
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualied in hot water boiler 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.
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.
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.
Vent damper is optional in some provinces of Canada..
Sizes 50-225
U.S. Patent No. 1,609,692
Canada Patent No. 383,318
JVH
JVS
H2355800-

Summary

Safety and Warnings

General Safety Precautions

Crucial safety advice to prevent fire, explosion, injury, or death.

General Information

Introduction, Warranty, and Identification

Overview of Laars boilers, warranty details, and model identification guide.

Boiler Assembly and Placement

Field Assembly and Dimensions

Instructions for field assembly and detailed dimensions for JVH and JVS models.

Placement, Flooring, and Clearances

Guidelines for boiler location, flooring requirements, and installation clearances.

Air and Venting

Combustion Air Supply and Venting Procedures

Requirements for combustion air and general venting guidelines.

Venting Types and Termination

Details on vertical, horizontal venting, connections, termination, and common venting.

Gas Connections

Gas Supply, Piping, and LP Precautions

Instructions for gas supply, piping, and specific precautions for LP gas.

Water Connections

Water Piping and By-pass Configuration

Guidelines for water piping, bypass installation, and adjustment.

Flow Requirements and Special Systems

Critical flow rates, temperature rise, and considerations for special system types.

Electrical Wiring and Controls

Wiring Procedures and Outdoor Reset

Steps for electrical connections and explanation of the outdoor reset sensor.

System Filling and Operation

Filling, Start-up, and Sequence

Procedures for filling, initial start-up, and boiler operating sequence.

Operating Instructions and Temperature Control

Detailed operating instructions and temperature control settings for JVH/JVS models.

Maintenance and Troubleshooting

Routine Maintenance and Electrical Troubleshooting

Recommended maintenance tasks and steps for diagnosing electrical issues.

Replacement Parts and Glossary

Glossary and Parts Lists

Definitions of terms and comprehensive parts lists for JVH and JVS models.

Laars Mini-Therm JVH Specifications

General

Brand	Laars
Model	Mini-Therm JVH
Category	Boiler
Language	English