Introduction, Table of Contents | A.O. Smith AOSRE50400 guide

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:

•ANSI - American National Standards Institute

•ASME - American Society of Mechanical Engineers

•NEC - National Electrical Code

•NFPA - National Fire Protection Association

•UL - Underwriters Laboratories Inc.

Preparing for the Installation

1.Read the “General Safety” section 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 electric water heater. It also contains warnings throughout the manual that you must read and understand. All warnings and all instructions are essential to the proper operation of the water heater and your safety. 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 and the requirements of the power company. In the absence of local code requirements follow NFPA-70, the National Electrical Code (current edition), which may be ordered from: National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269.

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

4.Carefully plan your intended placement of the water heater.

INSTALLATION OR SERVICE OF THIS WATER HEATER

REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED

TRADESMAN IN THE FIELD INVOLVED. PLUMBING

AND ELECTRICAL WORK ARE REQUIRED.

Examine the location to ensure the water heater complies with the “Facts to Consider About the Location” section in this manual.

5. For California installation this water heater must be braced, anchored, or strapped to avoid falling or moving during an earthquake. See instructions for correct installation procedures. Instructions may be obtained from California Office of the State Architect, 400 P Street, Sacramento, CA 95814.

6.Massachusetts Code requires this water heater to be installed in accordance with Massachusetts 248-CMR 2.00: State Plumbing Code and 248-CMR 5.00.

TABLE OF CONTENTS
SAFE INSTALLATION, USE AND SERVICE	2
GENERAL SAFETY	3
INTRODUCTION	4
Preparing for the Installation	4
TABLE OF CONTENTS	4
TYPICAL INSTALLATION	5
MIXING VALVE USAGE	5
LOCATING THE NEW WATER HEATER	6
Facts to Consider About Location	6
Insulation Blankets	6
IMPORTANT SAFETY INSTRUCTIONS	6
INSTALLING THE NEW WATER HEATER	7
Mounting	7
Water Piping	7-8
Water Piping Pressure Test	8
Temperature-Pressure Relief Valve	8-9
Filling the Water Heater	9
WIRING DIAGRAM	10
WIRING	11
TEMPERATURE REGULATION	12
Temperature Adjustment	12
FOR YOUR INFORMATION	13
Thermal Expansion	13
Strange Sounds	13
Operational Conditions	13
Water Odor	13
“Air” in Hot Water Faucets	13
High Water Temperature Shut Off System	13
PERIODIC MAINTENANCE	14
Anode Rod Inspection	14
Temperature-Pressure Relief Valve Operation	14
Draining	14
Removing Front Panel	14-15
Thermostat Removal/Replacement	15
Element Cleaning/Replacement	15-16
High Limit Switch Removal and Replacement	16
Service	16
LEAKAGE CHECKPOINTS	17
TROUBLESHOOTING GUIDELINES	18
REPAIR PARTS LIST	19

AOSRE50400 specifications

A.O. Smith AOSRE50400 is a high-efficiency water heater that exemplifies advanced technology and engineering, making it a popular choice for residential and commercial applications. This model is part of A.O. Smith’s comprehensive line of water heating solutions and is designed to provide reliable performance while maximizing energy efficiency.

One of the standout features of the AOSRE50400 is its high energy factor (EF), which greatly contributes to reduced energy bills and a smaller environmental footprint. With an EF rating of approximately 0.95, this water heater utilizes innovative design techniques to ensure that more of the energy consumed is converted into usable hot water. It meets and often exceeds the stringent energy efficiency standards set by the Department of Energy.

The AOSRE50400 is equipped with advanced insulating materials, which minimize heat loss and improve overall efficiency. This is particularly beneficial in maintaining water temperature for extended periods, reducing the need for excessive reheating. The tank has been designed with a glass-lined interior that offers enhanced durability and resistance to corrosion, extending the lifespan of the unit.

Another important characteristic of the AOSRE50400 is its large capacity. With a tank size of 50 gallons, it can effectively meet the hot water demands of medium to large households or businesses. This capacity allows for simultaneous usage across multiple outlets, ensuring that you never run out of hot water when you need it most.

The digital display and user-friendly interface provide homeowners with easy control over temperature settings and operation modes. This feature enhances user convenience and allows for customized hot water delivery that can cater to specific usage needs. Furthermore, the built-in diagnostic system alerts users to any potential issues, ensuring timely maintenance and reducing the risk of costly repairs.

A.O. Smith also prioritizes safety in the design of the AOSRE50400. It comes with multiple safety features, including a temperature and pressure relief valve, which helps prevent potential overpressure situations. This commitment to safety ensures peace of mind for users and compliance with local plumbing codes.

In summary, the A.O. Smith AOSRE50400 water heater exemplifies modern engineering and technology, offering high energy efficiency, a durable design, user-friendly controls, and a strong commitment to safety. Its large capacity and advanced features make it an exceptional choice for those seeking reliable and efficient hot water solutions.

A.O. Smith AOSRE50400 warranty Introduction, Table of Contents

Models: AOSRE50400

INTRODUCTION

TABLE OF CONTENTS

AOSRE50400 specifications