RESIDENTIAL GAS AND ELECTRIC WATER HEATER

SERVICE HANDBOOK

TABLE OF CONTENTS

 

Page

Introduction

 

Terms

1

Tools

2

Residential Gas Water Heaters

 

Guidelines

3

Installation

5

Operations and Servicing

 

Construction

6

Control

6

Burner

7

Normal Operations

7

Temperature

8

Gas

8

Water Flow

9

Service

10

Procedures and Conditions

11

Multiple Heater Piping

14

Exhaust Venting Notes

15

 

Page

Residential Electric continued

 

C-2 Circuit

21

C-2 Sequence of Operation

22

A-6 Circuit

23

A-6 Wiring Diagram

24

A-7

25

A-7 Wiring Diagram

27

Certification and Approvals

29

Simultaneous Dual Elements

30

C-2 Service

31

C-2 Voltage Checks

32

C-2 Grounded Element Check

34

A-6 Service

35

A-6 Element Test

35

A-6 Voltage Check

36

A-6 Grounded Element Test

38

A-7 Service

39

A-7 Element Test

40

A-7 Voltage Checks

41

A-7 Grounded Element Test

44

Miscellaneous Information

45

Residential Electric Water Heaters

A.O. Smith Technical Bulletins 46

Installation

16

Standard Illustrations

17

Guidelines

18

Elements

19

Thermostat

20

RESIDENTIAL GAS AND ELECTRIC HANDBOOK INTRODUCTION

This service handbook is designed to aid in servicing and troubleshooting A.O. Smith Residential Gas and Electric water heaters in the field. No duplication or reproduction of this book may be made without the express written authorization of the A.O. Smith Water Products Company.

The following text and illustrations will provide you with a step-by-step procedure to verify proper installation, operation, and troubleshooting procedures. Additional quick reference data is included to assist you in servicing this product.

The information contained in this handbook is designed to answer commonly faced situations encountered in the operation of the Residential Gas and Electric product line and is not meant to be all-inclusive. If you are experiencing a problem not covered in this handbook, please contact the A.O. Smith Technical Information Center at 1-800-527-1953 or your local A.O. Smith Water Products Company representative for further assistance. Additional information is also available on the web site www.hotwater.com. This handbook is intended for use by licensed plumbing professionals and reference should be made to the instructional manual accompanying the product. This handbook contains supplemental information to the Residential Gas and Electric instructional manual.

A.O. Smith Water Products Company

1

Training Department

©2002

Ashland City, Tennessee

 

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A.O. Smith TC-049-R2 manual Residential GAS and Electric Water Heater, Table of Contents

TC-049-R2 specifications

The A.O. Smith TC-049-R2 is a highly efficient and reliable water heater designed to meet the needs of both residential and light commercial applications. This gas-fired water heater offers a perfect blend of performance, efficiency, and durability, making it a popular choice among homeowners and business owners alike.

One of the standout features of the A.O. Smith TC-049-R2 is its tankless design. Unlike traditional water heaters with storage tanks, the TC-049-R2 heats water on demand, which means you only use energy when you need hot water. This not only results in lower energy bills but also provides an endless supply of hot water, ideal for households with multiple bathrooms or high hot water demands.

The TC-049-R2 is powered by natural gas, which enhances its efficiency and operating costs. With an impressive energy factor, this water heater is designed to conserve energy without compromising on performance. The unit also boasts a high recovery rate, which means it can quickly replenish hot water, ensuring you’re never left waiting.

Another notable technology in the A.O. Smith TC-049-R2 is its advanced electronic ignition system, which provides reliable start-up and reduces the chance of pilot light issues. Additionally, the unit features a scaled-down footprint, making it suitable for installation in tighter spaces, such as closets or utility rooms, without sacrificing performance.

Durability is a key characteristic of the TC-049-R2, as it is constructed with high-quality materials designed to resist corrosion and withstand typical wear and tear. The unit is equipped with a durable heat exchanger that enhances both efficiency and longevity, ensuring many years of reliable service.

Safety features are also prioritized in the A.O. Smith TC-049-R2. It comes equipped with advanced safety controls that prevent overheating and ensure safe operation. This offers peace of mind for users, knowing that the unit has multiple safeguards in place.

Overall, the A.O. Smith TC-049-R2 is an excellent choice for those seeking an efficient, reliable, and safe water heating solution. Its combination of advanced features, innovative technology, and robust construction makes it a leader in the water heater market, providing convenience and comfort to its users for years to come.