Laarsen Associates VW, PW, IW warranty Table of Contents

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LAARS HEATING SYSTEMS

 

 

TABLE OF CONTENTS

SECTION 1.

 

General Information

 

1A.

Introduction

3

1B.

Heater Identification

3

1C.

Flow Requirements

4

1D.

Water Chemistry

4

SECTION 2.

 

Installation

 

2A.

Heater Placement

4

2B.

Installation of Indoor Heaters

4

2B-1.

Combustion Air Supply

6

2B-2.

Venting

6

2C.

Installation of Outdoor Heaters

7

2D.

Gas Supply and Piping

7

2E.

Electrical Wiring

8

2F.

Water Piping of System

8

2G.

Water Expansion

9

2H.

Pump Performance and Installation

10

2I.

Water Pressure

16

2J.

Tank Installation

16

2K.

Two-Temperature System

16

SECTION 3.

 

Operation

 

3A.

Controls - General

16

3B.

Initial Start-Up

17

3C.

To Start Up System

18

3D.

To Turn Off Heater

19

3E.

To Shut Down System

19

SECTION 4.

 

Maintenance

 

 

...................................................................

19

SECTION 5.

Troubleshooting and Analysis of

Service Problems

................................................................... 20

SECTION 6.

Parts Descriptions and Order Numbers

................................................................... 22

SECTION 7.

Outdoor Parts Descriptions and

Order Numbers

................................................................... 30

SECTION 8.

Optional Parts Descriptions and

Order Numbers

................................................................... 32

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Contents Mighty Therm Table of Contents 1B. Heater Identification General Information1A. Introduction 2B. Installation of Indoor Heaters Installation2A. Heater Placement 1C. Flow RequirementsInstallation on Concrete Blocks or Tile 2B-1. Combustion Air Supply 2C. Installation of Outdoor Heaters 2D. Gas Supply and Piping2E. Electrical Wiring 2F. Water Piping of System2G. Water Expansion Pressure Relief Valve Location2H. Pump Performance and Installation With Vertical Tank Horizontal Hot Water Supply System Model VW & PWSplit System Piping Diagram, Model IW Dual Installation Piping Diagram, Model IW With Horizontal Tank With Vertical TankMighty Therm Volume Water Heater Operation 2J. Tank Installation2K. Two-Temperature System 2I. Water Pressure3B. Initial Start-Up 3C. To Start Up System Hi-Limit Checkout3E. To Shut Down System Maintenance3D. To Turn Off Heater Indoor ModelsTroubleshooting and Analysis Service Problems Heater will not FireIII. Water Dripping Firebox Numbers Parts Identification Laars Heating Systems Tile Assemblies Ignition Control, Electronic Safety Gas Valve, On-Off Two Stage Nat Plug, 3/4, Sq. Hd Outdoor Parts Outdoor Parts Descriptions and Order Numbers See Parts Illustration OnMighty Therm Volume Water Heater Energy Management Monitor EM2 Pump Rotating Sections and Repair PartsOptional Parts Descriptions and Order Numbers