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A.O. Smith DEN-120 User Manual

A.O. Smith DEN-120
24 pages
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Instruction Manual
PRINTED 1213 322055-002
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
COMMERCIAL ELECTRIC WATER HEATERS
Thank you for buying this energy efcient water heater.
We appreciate your condence in our products.
MODELS DEL-6/10/15/20 Series 102
DEL-30/40/50 Series 110
& DEN-30/40/52/66/80/120 Series 110
INSTALLATION - OPERATION - SERVICE
- MAINTENANCE - LIMITED WARRANTY
500 Tennessee Waltz Parkway
Ashland City, TN 37015
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A.O. Smith DEN-120 Specifications

General IconGeneral
ModelDEN-120
Power Consumption12 kW
Voltage240V
ThermostatDigital
Wattage12000 W
Amperage50 A
Activation Flow Rate0.5 GPM
TypeElectric Tankless
CapacityTankless (on-demand)
Warranty5 years
Safety FeaturesOverheat protection
Temperature Range140°F
Connection Size1/2 inch NPT

Summary

Safe Installation, Use, and Service

Important Definitions

Defines key terms and roles relevant to installation and service.

General Safety Information

Precautions

Lists essential safety measures and warnings before operating the heater.

Hydrogen Gas (Flammable)

Details the hazard of hydrogen gas production and safety measures.

Introduction

Preparing for the Installation

Guides users through essential steps before beginning the installation process.

Dimensions and Capacities Data

Approvals

Model and Rating

Features and Components

Electronic Control Models

Details specific features and installation considerations for electronic control units.

Locating the New Water Heater

Facts to Consider About the Location

Outlines important factors like leakage, freezing, and proximity to systems.

Clearances

Specifies minimum required space around the heater for servicing and installation.

Installation

Required Ability

Specifies the necessary skills and qualifications for installation personnel.

General

Covers general installation requirements, codes, and voltage considerations.

Contaminated Water

Warns against connecting to non-potable water or boiler treatment systems.

Circulating Pump

Provides guidance on the use and type of circulating pumps.

Insulation Blankets

Advises on the use and precautions for external insulation blankets.

Temperature-Pressure Relief Valve

Details the importance and installation of the T&P relief valve.

Closed Water Systems

Explains how closed systems affect water heaters and potential issues.

Thermal Expansion

Describes the phenomenon of thermal expansion and its impact on the heater.

Electrical

General

Covers general electrical safety and connection requirements.

Branch Circuit

Guides on selecting the correct wire size for the electrical branch circuit.

Calculating Amperage/Overcurrent Protection

Explains how to determine proper electrical protection sizing.

Wiring Diagrams

Operation

General

Provides an overview of operational guidelines and safety checks.

Initial Start Up

Step-by-step guide for powering on and checking the heater for the first time.

Draining the Water Heater

Procedures for safely emptying the water heater tank.

Temperature Regulation

Thermodisc Thermostats

Explains the function and types of thermostats used in the heater.

Temperature Adjustment

Provides instructions on how to set the desired water temperature.

Maintenance

General

Outlines basic maintenance tasks for the water heater.

Anode Rod Inspection

Details the process and importance of checking the anode rod for corrosion control.

Troubleshooting Checklist

Checklist

A systematic guide to verify common issues before calling for service.

Abnormal Sounds

Describes potential noises and their causes, like sediment buildup.

Water Leakage Is Suspected

Guidance on identifying and addressing potential water leaks.

If You Cannot Identify or Correct the Source of Malfunction

Steps to take when troubleshooting fails and professional help is needed.

Replacement Parts

Information on how to obtain necessary parts for repair or maintenance.

Leakage Checkpoints

Warranty

The Tank

Details the warranty coverage specifically for the glass-lined tank.

All Other Parts

Covers the warranty for all components other than the tank.

Conditions and Exceptions

Lists requirements and exclusions that affect warranty validity.

Service and Repair Expense

Clarifies responsibilities for labor and associated costs.

Limitations on Implied Warranties

Explains legal limitations on warranties like merchantability.

Claim Procedure

Instructions on how to initiate a warranty claim with the manufacturer.

Disclaimers

States limitations of liability and other important legal notices.

Notes

Repair Parts List

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