A.O. Smith Dve-52/80/120 Temperature Settings, Differential Settings, Operating Sequence

Page 24

Differential Settings

Adjustable user setting(s) 1°F to 20° range; factory default is 2°F. The water heaters covered in this Instruction Manual will have 3, 6 or 9 heating elements. Each group of 3 heating elements is one “Bank” of heating elements. Heating elements are energized in Banks of 3. Each Bank of heating elements will have a Differential Setting associated with it. Differential Settings are located in the Temperatures Menu.

There is a 1st Differential Setting on all models. There will be one additional Differential Setting visible/adjustable for each additional Bank of (3) heating elements.

Operating Sequence

With an Operating Set Point of 120°F and all Differential settings at 2°F the On/Off sequencing of heating element Banks would be as follows:

BANK NUMBER

DIFFERENTIAL

TURN ON

TURN OFF

SETTING

TEMP

TEMP

 

Bank 1

2°F

118°F

120°F

Bank 2

2°F

116°F

118°F

Bank 3

2°F

114°F

116°F

Tank Temperature

Non adjustable information display. Current water temperature as sensed by the control system from the immersion Temperature Probe.

Tank Probe Offset

User adjustable setting -5°F to +5°F range; factory default is 0°F. If the current Tank Temperature is sensed (from the immersion Temperature Probe) at 120°F and the offset is adjusted to -5°F the control system would calibrate or “offset” the Tank Temperature to 115°F. Heating cycles would then start/stop based on the calibrated Tank Temperature.

Used to calibrate for slight differences in control system temperature sensing. This can improve the precision of temperature control in the storage tank and at points of use. This feature can also be used to compensate for building recirculation loops (hot water returning to the storage tank) that may cause the heating cycle to terminate prematurely.

Temperature Settings

The Operating Set Point and the Differential Settings are adjusted in the Temperatures Menu. The following instructions explain how to adjust these user settings and navigate the control system menus.

ACTION

DISPLAY

From the Desktop Screen, press the Operational Button underneath “MENU” to enter the Main Menu.

Notice how the text above the Operational Buttons on the display changes as you navigate through the various menus and screens.

With Temperatures selected (highlight in black) in the Main Menu, press the Operational Button underneath “SELECT” to enter the Temperatures Menu.

If Temperatures is not selected use the Up and Down buttons to select this menu item.

With the Operating Set Point selected in the Temperatures Menu, press the Operational Button underneath “CHANGE” to activate the adjustment mode for this menu item.

Press the Up and Down buttons to adjust the Operating Set Point to the desired setting.

Press the Operational Button underneath “UPDATE” to confirm the new setting. Press the Operational Button underneath “CANCEL” to discard the new setting and retain the previous setting.

The new Operating Set Point value should now be displayed as the current value.

NOTE: Use this same procedure to adjust the Differential settings and the Tank Probe Offset in the Temperatures Menu.

This same procedure is used to change user settings in other control system menus.

24

Page 23 Page 25
Image 24
Page 23 Page 25
Contents Installation Operation Service Maintenance Limited Warranty OptionalSafe INSTALLATION, USE, and Service Qualified Installer or Service AgencyImportant Definitions Ansi Z223.1 2006 SecGeneral Safety Information PrecautionsHydrogen GAS Flammable Grounding InstructionsTable of Contents IntroductionDRE/DVE Model Differences StandardBTU KW Input Hour 100 110 120 130 140Approvals Model and RatingFeatures and Components Surface Mount Control Models Locating the NEW Water Heater Facts to Consider About the LocationInstallation Water Line Connections Closed Water SystemsThermal Expansion Electrical 16. Allowable Ampacities of Insulated ConductorsAmperage TABLE/OVERCURRENT Protection Heater Circuits Electronic Control ModelsControl CIRCUIT- Electronic Control Models Wiring Diagrams Power Circuit Diagrams Electronic Control Models Conversion to Single Phase Conversion to Three Phase Nine Element Single and Three Phase DiagramPower Circuit Diagrams Surface Mount Control Models Conversion to Single Phase Nine Elements Single and Three Phase DiagramOperation GeneralFilling the Water Heater Initial Start UPTemperature Regulation High Temperature Limit Controls ECOThermostat Settings Surface Mount Control Thermostat ControlsThermostat Settings electronic CONTROLs Control System FeaturesElectronic Control Models Operation Control System NavigationDiscreet Menu Contact Information From the Desktop Screen Status Icons DescriptionTemperatures Menu Operating StatesState Description Control System MenusTemperature Settings Differential SettingsOperating Sequence Tank Probe OffsetEconomy Mode Setup Menu Heater Status MenuEconomy Mode Settings Setpoint Adjustment ValueTime Clock Settings Daily Operating Mode Settings Alarm Output Setup Menu Display Settings MenuHeater Information Menu TOP of Menu Bottom of MenuCurrent Fault / Alert Menu Fault Occurrence MenuFault History Menu Restore Factory Defaults MenuMaintenance Anode Inspection and ReplacementRestore Factory Defaults Maintenance Schedule FlushingSediment Removal Lime Scale RemovalTroubleshooting Checklist ChecklistReplacement Parts Not enough or no hot waterLeakage Checkpoints Piping Diagrams ONE Temperature with Circulating LoopPiping Diagrams Piping Diagrams TWO Temperature with Mixing Valve Circulating Loop Piping Diagrams Piping Diagrams Piping Diagrams Manifold Kits Manifold Kits TWO HeatersThree Heaters Four HeatersWarranty Tank

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.
Top Page Image Contents