A.O. Smith Dve-52/80/120 Electronic Control Models Operation, Control System Features

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THERMOSTAT SETTINGS - electronic CONTROLs

These models are equipped with an electronic control system. The control system senses temperature from a factory installed Immersion Temperature Probe (see Figure 1). The “Operating Set Point” is adjusted to control water temperature. This is an adjustable user setting in the control system’s “Temperatures Menu.” This and all control system menus are accessed through the UIM (User Interface Module - see Figure 5) located on the front panel of the water heater.

The Operating Set Point is adjustable from 90°F/42°C to 190°F/88°C. The factory setting is 120°F/49°C. See the Electronic Control Models Operation section of this manual for instructions on how to adjust the Operating Set Point and other user settings.

UIM (User Interface Module)

FIGURE 5

Set the Operating Set Point at the lowest setting which produces an acceptable hot water supply. This will always give the most energy efficient operation.

ELECTRONIC CONTROL MODELS OPERATION

CONTROL SYSTEM FEATURES

Advanced Diagnostics: Plain English text and animated icons display detailed operational and diagnostic information. LCD screen on the front of the water heater displays the Sequence of Operation in real time. Fault or Alert messages are displayed when operational problems occur. Advanced Service menu displays a list of possible causes for current Fault and Alert conditions to aid in servicing.

Economy Mode Operation: Control system automatically lowers the Operating Set Point by a programmed value during user defined time periods. Helps reduce operating costs during unoccupied or peak demand periods.

Linear Sequencing: Banks of heating elements (3 elements per bank) are energized according to adjustable (1 to 20°) differential set points for each bank. First bank on is the last bank off. Helps reduce operating costs during low/moderate loads.

CONTROL SYSTEM NAVIGATION

The UIM (User Interface Module) is located on the front cabinet of the Electronic Control Model water heaters. All operational information and user settings are displayed and accessed using the UIM. The UIM includes five snap acting (momentary) user input buttons; an Up, Down and 3 Operational Buttons.

Up & Down Buttons

Used to navigate (up and down) and to select (highlight) menu items. Also used to adjust or change (increase/decrease, on/off, set time) various user settings.

Operational Buttons

The 3 Operational Buttons are multifunctional. Their current function is defined by the text that appears above each button on the LCD screen. The function will change depending on what menu is currently displayed or what menu item is selected. When no text appears on the LCD screen above an Operational Button there is no function assigned.

THE DESKTOP SCREEN

Figure 7 below shows the control system “Desktop Screen.” This is the default screen. If there are no active Fault or Alert conditions and no user input for approximately 10 minutes the control system will return to this screen automatically.

Model Information

Model information and menu titles are shown in the black bar at the top of the Desktop Screen.

Tank Temperature

Current water temperature as sensed from the immersion Temperature Probe.

Operating Set Point: Temperature at which the control system will maintain tank (water) temperature in the Normal Mode. This line of text will read Economy Set Point whenever the control system is operating in the Economy Mode.

Status: The Operating State of the control system is displayed beneath the Operating Set Point.

UIM - USER INTERFACE MODULE

FIGURE 7.

FIGURE 6.

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Contents Optional Installation Operation Service Maintenance Limited WarrantyQualified Installer or Service Agency Safe INSTALLATION, USE, and ServiceImportant Definitions Ansi Z223.1 2006 SecPrecautions General Safety InformationHydrogen GAS Flammable Grounding InstructionsIntroduction Table of ContentsStandard DRE/DVE Model DifferencesBTU KW Input Hour 100 110 120 130 140Model and Rating ApprovalsFeatures and Components Surface Mount Control Models Facts to Consider About the Location Locating the NEW Water HeaterInstallation Water Line Connections Closed Water SystemsThermal Expansion 16. Allowable Ampacities of Insulated Conductors ElectricalAmperage TABLE/OVERCURRENT Protection Heater Circuits Electronic Control ModelsControl CIRCUIT- Electronic Control Models Wiring Diagrams Power Circuit Diagrams Electronic Control Models Nine Element Single and Three Phase Diagram Conversion to Single Phase Conversion to Three PhasePower Circuit Diagrams Surface Mount Control Models Nine Elements Single and Three Phase Diagram Conversion to Single PhaseGeneral OperationFilling the Water Heater Initial Start UPHigh Temperature Limit Controls ECO Temperature RegulationThermostat Settings Surface Mount Control Thermostat ControlsControl System Features Thermostat Settings electronic CONTROLsElectronic Control Models Operation Control System NavigationStatus Icons Description Discreet Menu Contact Information From the Desktop ScreenOperating States Temperatures MenuState Description Control System MenusDifferential Settings Temperature SettingsOperating Sequence Tank Probe OffsetHeater Status Menu Economy Mode Setup MenuSetpoint Adjustment Value Economy Mode SettingsTime Clock Settings Daily Operating Mode Settings Display Settings Menu Alarm Output Setup MenuHeater Information Menu TOP of Menu Bottom of MenuFault Occurrence Menu Current Fault / Alert MenuFault History Menu Restore Factory Defaults MenuMaintenance Anode Inspection and ReplacementRestore Factory Defaults Flushing Maintenance ScheduleSediment Removal Lime Scale RemovalChecklist Troubleshooting ChecklistReplacement Parts Not enough or no hot waterLeakage Checkpoints ONE Temperature with Circulating Loop Piping DiagramsPiping Diagrams Piping Diagrams TWO Temperature with Mixing Valve Circulating Loop Piping Diagrams Piping Diagrams Piping Diagrams Manifold Kits TWO Heaters Manifold KitsThree Heaters Four HeatersTank Warranty

Dve-52/80/120 specifications

The A.O. Smith DVE-52/80/120 is an innovative water heater designed to meet the diverse needs of both residential and commercial applications. Known for its efficiency and reliability, it stands out in the market due to its advanced features and cutting-edge technologies.

One of the main characteristics of the DVE series is its high energy efficiency, contributing to lower energy bills and a smaller carbon footprint. The units are designed with a high-efficiency burner that can achieve an energy factor (EF) rating significantly above average, ensuring more hot water is produced for less fuel consumption. This makes the A.O. Smith DVE-52/80/120 an environmentally friendly choice without sacrificing performance.

These water heaters also incorporate a unique flame rod technology that enhances the safety and reliability of the system. This feature continuously monitors the ignition of the burner and ensures an optimal combustion process, contributing to both safety and performance. Moreover, their design includes an advanced digital control system that facilitates ease of use and precise temperature management, allowing users to customize their hot water needs efficiently.

The construction of the DVE series is robust, featuring a durable glass-lined tank that resists corrosion and extends the lifespan of the heater. Insulation is another highlight, as A.O. Smith employs thick foam insulation to minimize heat loss, further improving efficiency.

The DVE-52/80/120 models also come equipped with various capacity options, catering to different household sizes and usage patterns. Whether for a small home or a larger establishment, the flexibility in capacity ensures users have consistent hot water availability according to their demands.

Additionally, the A.O. Smith DVE series is compatible with various smart home systems, making it an ideal choice for modern households seeking integrated solutions. The compatibility with Wi-Fi allows for remote monitoring and control, giving users greater convenience and peace of mind.

In summary, the A.O. Smith DVE-52/80/120 water heater is engineered with advanced technologies and reliable features that ensure optimal efficiency, safety, and performance, making it a smart investment for any hot water needs. Its blend of durability, customizable capacity, and smart technology integration positions it as a leading choice in the water heating market.
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