Laars Mini-Therm II JVT (Sizes 50-225) - Install and Ope User Manual download pdf (Page 3)

Mini-Therm II Hydronic Boiler

Page 3

SECTION 1.

General Information

1.1 Introduction

This manual provides information necessary for

the installation, operation, and maintenance of Laars

Model JV copper tube hydronic boilers.

All application and installation procedures

should be reviewed completely before proceeding with

the installation. Consult the Laars factory, or local

factory representative, with any problems or questions

regarding this equipment. Experience has shown that

most operating problems are caused by improper

installation.

These boilers are available in two configurations;

the JVT has a thermocouple/continuous burning pilot,

and the JVS has an electronic intermittent ignition

device (I.I.D.). Look for the model designation on the

rating plate, which can be found on top of the boiler in

the right rear corner. If the unit is part of a Mini-

Combo II (model MC) Residential Gas-Fired Space/

Water Heater, refer also to Document 8001, Mini-

Combo II Installation and Operation Instructions.

The Laars automatic vent dampers are standard

on all U.S. and Canadian models. The Laars side wall

power venters can be used on both JVS and JVT

models. Special instructions for their installation are

included in the vent damper and power venter

package. Read them carefully before installation.

1.2 Warranty

The Laars Model JV boilers are covered by a

limited warranty. The owner should fill out the

warranty registration card and return it to Laars.

All warranty claims must be made to an

authorized Laars representative or directly to the

factory. Claims must include the boiler serial number

and model (this information can be found on the

rating plate), installation date, and name of the

installer. Shipping costs are not included in the

warranty coverage.

Some accessory items are shipped in separate

packages. Verify receipt of all packages listed on the

packing slip. Inspect everything for damage

immediately upon delivery, and advise the carrier of

any shortages or damage. Any such claims should be

filed with the carrier. The carrier, not the shipper, is

responsible for shortages and damage to the shipment

whether visible or concealed.

The warranty does not cover damage caused by

improper assembly installation, operation or field

modification.

1.3 Codes and Standards

The JV Hydronic Boiler (or Mini-Therm II) is

design certified by CSA (Canadian Standards

Association) as complying with the latest edition of

the “Standard for Gas Fired Low Pressure Steam and

Hot Water Boilers”, ANSI Z21.13 in the USA and

CAN1-4.9 in Canada.

All Laars boilers must be installed in accordance

with the local building and installation codes as per

the utility or authorities having jurisdiction. All local

codes take precedence over national codes.

In the absence of local codes, refer to the

following national codes for installation:

1. In the United States, the latest edition of "The

National Fuel and Gas Code", ANSI Z223.1.

Specifically, refer to Chapter 10, "Venting of

Equipment".

2. In Canada, the latest edition of "The Installation

Codes for Gas Burning appliances and

Equipment", CSA B149.1.

Any changes to the boiler, gas controls, gas

orifices, wiring, draft diverter, or improper installation

may void the warranty. If change is required to any of

the above, consult the factory.

1.4 Technical Assistance

Consult Laars Heating Systems or your local

Laars factory representative with any questions or

problems involving the specifications, installation, and

operation of your Laars equipment. An experienced

technical support staff is ready to assist you in

assuring the proper performance and application of

Laars products. For technical support call the Laars

Heating Systems Technical Service Department.

1.5 Materials Installer Must Provide

1.5.1 Materials for All Installations

The following items are needed and are to be

supplied by the installer for all Mini-Therm II boiler

installations:

1. The correct size gas pipe to supply the gas to the

boiler (see Section 4.1 for correct gas pipe size).

2. A CSA listed manually operated gas valve to be

installed in the gas line outside of the boiler

jacket.

3. A suitable gas union joint or other removable

connector to connect the boiler to the gas line

outside of the boiler.

4. Plumbing items needed to provide a sediment

trap (drip leg) in the gas line between the manual

gas valve and the union to the boiler.

5. A 115 VAC power supply. A junction box is not

needed at the boiler, connections are made inside

of the boiler’s control panel (see Figure 8).

6. Vent pipe of the same or larger diameter as the

vent damper or draft diverter outlet (see Section

3.3 for venting instructions).

1.5.2 Materials for Most Installations

In addition to the items listed above, the

following items may be needed:

1 2 3 4 5 6 7 8 ... 35 36

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Laars Mini-Therm II JVT (Sizes 50-225) - Install and Ope User Manual Page 3

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