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Instruction Manual
CoMMErCIAL ELECtrIC wAtEr hEAtErs
ModELs drE-52/80/120 sErIEs 100 &
dVE-52/80/120 sErIEs 100
InstALLAtIon - oPErAtIon - sErVICE
500 Tennessee Waltz Parkway
MAIntEnAnCE - LIMItEd wArrAnty
Ashland City, TN 37015
(OPTIONAL)
Thank you for buying this energy efficient water heater.
We appreciate your confidence in our products.
PLACE thEsE InstruCtIons AdjACEnt to hEAtEr And notIfy ownEr to kEEP for futurE rEfErEnCE.
PRINTED 0912
196674-004
1
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Table of Contents
Related Manuals for A.O. Smith DVE-120 Series
Summarization of Contents
Safe Installation, Use, and Service
Important Definitions
Defines key terms for installation and service, ensuring clarity and safety compliance.
General Safety Information
Key Safety Precautions
Outlines critical safety measures, including electrical grounding and hazard warnings.
Introduction and Preparation
Preparing for Installation
Provides guidance and warnings before beginning the installation process.
Dimensions and Capacities Data
Tank Specifications and Recovery Rates
Details physical dimensions, tank capacities, and water recovery performance.
Approvals and Model Information
Certifications and Rating Plate
Lists product approvals and explains the model/rating plate details.
Features and Components Overview
Electronic Control Model Components
Identifies and illustrates key components of electronic control water heaters.
Surface Mount Control Model Components
Identifies and illustrates key components of surface mount control water heaters.
Locating the Water Heater
Optimal Location Considerations
Guides on selecting the best placement for safety, efficiency, and service access.
Installation Requirements
General Installation Standards
Covers code compliance, required abilities, and general installation practices.
Specific Installation Notes
Details on water connections, pumps, insulation, and relief valves.
Water Line and System Connections
Explains water line hookups, closed systems, and thermal expansion management.
Electrical Connections and Requirements
Electrical Grounding and Conductor Sizing
Outlines electrical safety, grounding, and wire gauge recommendations.
Heater Circuit Amperage and Wiring
Provides current ratings for different models and explains heater circuit configurations.
Wiring Diagrams
Electronic Control Circuit Diagram
Details the control circuit for electronic models, including the CCB.
Electronic Control Power Circuit Diagrams
Illustrates power circuit configurations for electronic control models.
Nine Element Wiring and Phase Conversion
Covers wiring for nine-element models and procedures for single/three-phase conversion.
Surface Mount Control Power Circuit Diagrams
Illustrates power circuit configurations for surface mount control models.
Nine Element Wiring and Phase Conversion
Covers wiring for nine-element models and procedures for single/three-phase conversion.
Operating the Water Heater
General Operation and Start-Up
Covers initial startup procedures, filling, and basic operation guidelines.
Draining the Water Heater
Provides instructions for safely draining the water heater tank.
Temperature Regulation and Limits
High Temperature Limit (ECO) Controls
Explains the function and reset procedures for high-temperature limit controls.
Thermostat Settings for Surface Mount Controls
Details thermostat adjustment for surface mount models and burn risk.
Electronic Control System Operation
Thermostat Settings for Electronic Controls
Explains thermostat adjustments and operation for electronic control models.
Control System Features and Navigation
Describes system features, user interface, and navigation methods.
Desktop Screen Overview
Explains the main display screen and its information.
Interpreting Status Icons
Provides a guide to understanding the animated icons on the LCD display.
Understanding Operating States
Defines the different operational states of the control system.
Control System Menu Structure
Lists and describes the available menus for system configuration.
Temperatures Menu Details
Explains settings for operating set point, differentials, and tank temperature.
Differential Setting Adjustments
Details how to adjust differential settings for heating element banks.
Tank Temperature and Probe Offset
Explains display information and calibration for tank temperature sensing.
Heater Status Menu Information
Provides status on heating elements, ECO contact, and enable/disable circuits.
Economy Mode Setup Options
Covers setting up economy mode for energy savings.
Economy Mode Settings Configuration
Adjusting Setpoint Values
Guides on setting the desired setpoint adjustment for economy mode.
Configuring Time Clock Settings
Instructions for setting the current time and day for the control system.
Setting Daily Operating Modes
Details how to configure daily schedules for economy or normal operation.
System Menu Functions
Alarm Output Setup Configuration
Allows configuration of conditions for the alarm output relay.
Display Settings Customization
Options to adjust display units, backlight, and contrast.
Heater Information Menu Access
Provides access to operational history and system information.
Current Fault and Alert Management
Displays current system faults and alerts, with troubleshooting tips.
Fault Occurrence and History Tracking
Logs past faults and alerts to help diagnose persistent issues.
Routine Maintenance Procedures
General Maintenance Tasks
Outlines routine checks and cleaning for optimal performance and longevity.
Anode Rod Inspection and Replacement
Guides on inspecting and replacing the anode rod to prevent tank corrosion.
Water Heater Flushing and Sediment Removal
Instructions for flushing the tank and removing sediment buildup.
Lime Scale Removal Process
Details the method for removing lime scale from heating elements.
Other Scale and Sediment Removal
Covers methods for removing other types of scale and tank bottom sediment.
Troubleshooting Common Issues
No Hot Water Troubleshooting
Step-by-step guide to diagnose and resolve no hot water problems.
Understanding Abnormal Sounds
Explains common sounds and their causes, like sediment or component operation.
Addressing Water Leakage Issues
Guides on identifying sources of leaks from valves, elements, or connections.
Resolving Unidentified Malfunctions
Steps to take when a malfunction cannot be identified, including contacting service.
Detailed Leakage Checkpoints
Visual guide to inspect for leaks at various points on the water heater.
Piping Diagrams
Single Unit Configuration
Illustrates suggested piping for a single water heater unit.
Single Unit with Vertical Storage Tank
Piping diagram for a single unit connected to a vertical storage tank.
Single Unit with Horizontal Storage Tank
Piping diagram for a single unit connected to a horizontal storage tank.
Two Unit Configuration
Illustrates suggested piping for two water heater units.
Two Units with Vertical Storage Tank
Piping diagram for two units connected to a vertical storage tank.
Two Units with Horizontal Storage Tank
Piping diagram for two units connected to a horizontal storage tank.
Three Unit Configuration
Illustrates suggested piping for three water heater units.
Three Units with Vertical Storage Tank
Piping diagram for three units connected to a vertical storage tank.
Three Units with Horizontal Storage Tank
Piping diagram for three units connected to a horizontal storage tank.
Four Unit Configuration
Illustrates suggested piping for four water heater units.
Four Units with Vertical Storage Tank
Piping diagram for four units connected to a vertical storage tank.
Four Units with Horizontal Storage Tank
Piping diagram for four units connected to a horizontal storage tank.
Manifold Kit Specifications
Manifold Kit Dimensions and Parts
Provides dimensions and part numbers for manifold kits for various unit configurations.
Limited Warranty Information
Warranty Terms and Conditions
Outlines the warranty coverage, conditions, exceptions, and claim procedures.
Service and Repair Responsibilities
Clarifies owner responsibilities for labor, shipping, and incidental costs.
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