TABLE OF CONTENTS

. .SAFE INSTALLATION, USE AND SERVICE

. . 2

. . . . . . . . . . .Vent assembly

. . 16

GENERAL SAFETY

. . 3

Securing vent termination assembly to the exterior wall . 16

TABLE OF CONTENTS

. . 4

Uncompressing the corrugated tubing

. . 16

INTRODUCTION

. . 4

Vent restricter plate

. . 16

Preparing for the installation

. . 4

Offset vent arrangement Condition 1

. . 17

TYPICAL INSTALLATION

. 5-6

Offset vent arrangement Condition 2

. . 17

Get to know your water heater

. . 5

LIGHTING & OPERATING LABEL

. . 18

Replacement parts

. . 5

TEMPERATURE REGULATION

. . 19

Mixing valve useage

. . 6

Temperature regulation

. . 19

LOCATING THE NEW WATER HEATER

. 7-8

FOR YOUR INFORMATION

20-21

Facts to consider about location

. . 7

External damage

. . 20

Insulation blankets

. . 8

Start up conditions

. . 20

Ventilation for appliances located in confined spaces . .

. . 8

Condensate

. . 20

Vent termination

. . 8

Smoke/odor

. . 20

INSTALLING THE NEW WATER HEATER

9-17

Thermal expansion

. . 20

Required ability

. . 9

Strange sounds

. . 20

Inspect shipment

. . 9

Operational Conditions

. . 20

General

. . 9

Smelly water

. . 20

Water piping

. . 9

“Air” in hot water systems

. . 21

T & P valve and pipe insulation (if supplied)

. 10

High water temperature shut off system

. . 21

Temperature-pressure relief valve

. 10

MAINTENANCE

22-24

Water (potable) heating and space heating

. .11

Venting system inspection

. . 22

Closed water system

. .11

Pilot and main burner

. . 22

Gas piping

. .11

Temperature & Pressure relief valve

. . 23

Sediment traps

. 13

Draining

. . 23

Filling the water heater

. 13

Cathodic protection - anode

. . 23

Venting

. 13

Anode rod maintenance

. . 23

High altitude installations

. 13

Drain valve washer replacement

. . 24

Combustion air and ventilation

. 14

LEAKAGE CHECKPOINTS

. . 25

Vent terminal clearances

. 14

Service

. . 25

Vent connections

. 15

TROUBLESHOOTING GUIDELINES

26-27

Locating clearance hole for vent

. 15

NOTES

. . 28

High rise vent arrangement

. 15

WARRANTY

29-30

Standard vent arrangement

. 16

 

 

INTRODUCTION

Thank You for purchasing this water heater. Properly installed and maintained, it should give you years of trouble free service.

Abbreviations Found In This Instruction Manual:

CSA

- Canadian Standards Association

ANSI

- American National Standards Institute

NFPA

- National Fire Protection Association

ASME

- American Society of Mechanical Engineers

GAMA

- Gas Appliance Manufacturer’s Association

UL

- Underwriters Laboratories Inc.

This gas-fired water heater is design certified by Underwriters Laboratories Inc. under American National Standard/CSA Stan- dard for Gas Water Heaters ANSI Z21.10.1 • CSA 4.1 (current edition).

PREPARING FOR THE INSTALLATION

1.Read the “General Safety” section, page 3 of this manual first and then the entire manual carefully. If you don’t follow the safety rules, the water heater will not operate properly. It could cause DEATH, SERIOUS BODILY INJURY AND/OR PROPERTY DAMAGE. This manual contains instructions for the installation, operation, and maintenance of the gas-fired water heater. It also contains warnings throughout the man- ual that you must read and be aware of. All warnings and all instructions are essential to the proper operation of the water heater and your safety. Since we cannot put everything on the first few pages, READ THE ENTIRE MANUAL BEFORE

ATTEMPTING TO INSTALL OR OPERATE THE WATER HEATER.

2.The installation must conform with these instructions and the local code authority having jurisdiction. In the absence of lo- cal codes, installations shall comply with the “Natural Gas and Propane Installation Code” CAN/CSA-B149.1. This publication is available from the Canadian Standards Asso- ciation, 5060 Spectrum Way, Mississauga, Ontario, Canada, L4W 5N6.

3.If after reading this manual you have any questions or do not understand any portion of the instructions, call the local gas utility or the manufacturer whose name appears on the rating plate.

4.Carefully plan the place where you are going to put the water heater. Correct combustion, vent action, and vent pipe instal- lation are very important in preventing death from possible carbon monoxide poisoning and fires, see Figures 1 and 2. Examine the location to ensure the water heater complies with the “Locating the New Water Heater” section in this manual.

5.In Earthquake Zones the water heater must be braced, an- chored, or strapped to avoid moving during an earthquake. Contact local utilities for code requirements in your area.

4

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A.O. Smith 186589-004, GDVT-50, GDV-50, GDV-75, GDV-40 instruction manual Table of Contents, Introduction

186589-004, GDVT-50, GDV-75, GDV-40, GDV-50 specifications

A.O. Smith is a recognized name in the water heating industry, known for its reliable and efficient water heaters. Among its notable products are the GDV-50, GDV-40, GDV-75, GDVT-50, and 186589-004 models. These water heaters offer enhanced performance, energy efficiency, and modern technologies suited for residential and commercial applications.

The GDV series includes the GDV-50, GDV-40, and GDV-75 models, which feature a robust design typically made from high-quality materials to ensure longevity. These units come equipped with advanced insulation, which minimizes heat loss and increases efficiency, making them excellent choices for households with varying hot water needs.

The GDV-50 model boasts a tank capacity of 50 gallons, making it suitable for medium to large households. It features a powerful heating element that heats water quickly, providing ample hot water for daily use. Meanwhile, the GDV-40 is designed for smaller households with a 40-gallon capacity. This model strikes a balance between size and efficiency, catering to lighter hot water demands while maintaining excellent performance.

For larger households, the GDV-75 provides a 75-gallon capacity, ensuring that even the most demanding hot water applications can be met with ease. This model is particularly ideal for families that require hot water in large quantities or at peak times.

The GDVT-50 is a versatile model that features advanced technology, such as an integrated digital display that allows users to monitor and adjust settings easily. This offers greater control over temperature settings and energy usage, making it not only convenient but also more energy-efficient.

The A.O. Smith 186589-004 is an accessory designed for specific model enhancements that improve overall performance and safety. It may include additional safety features, such as high-temperature limit switches and automatic shut-off mechanisms that provide peace of mind for users.

All these models are equipped with A.O. Smith’s innovative technologies, including advanced thermostat controls and durable components designed to withstand frequent use. They typically come with generous warranties, underscoring the manufacturer's commitment to quality and customer satisfaction.

In summary, A.O. Smith water heaters, particularly the GDV-50, GDV-40, GDV-75, GDVT-50, and 186589-004, are built for efficiency, reliability, and performance. With various capacities and the latest technologies, they cater to the diverse needs of homeowners and businesses, ensuring that hot water is always available when needed.