A.O. Smith DSE-5 THRU DSE-120 warranty General Safety Information, Installation

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GENERAL SAFETY

INFORMATION

INSULATION BLANKETS

Insulation blankets available to the general public for external use on electric water heaters are not approved for use on your A.O. Smith water heater. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank water heaters. Your A.O. Smith water heater meets or exceeds the National Appliance Energy Conservation Act standards with respect to insulation and standby loss requirements, making an insulation blanket unnecessary.

WARNING

Should you choose to apply an insulation blanket to this heater, you should follow these instructions (See Figure 1 for identification of components mentioned below). Failure to follow these instructions can result in fire, asphyxiation, serious personal injury or death.

1.DO NOT COVER THE JUNCTION BOX EXTERNAL WIRING, THERMOSTATS OR HEATING ELEMENTS ON ELECTRIC WATER HEATER.

2.DO NOT COVER THE TEMPERATURE-PRESSURE RELIEF VALVE.

3.DO NOT COVER OPERATING INSTRUCTIONS, INSTALLATION OR SAFETY RELATED LABELS.

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4.DO OBTAIN NEW WARNING AND INSTRUCTION LABELS FROM A.O. SMITH FOR PLACEMENT ON THE BLANKET DIRECTLY OVER THE EXISTING LABELS.

5.WATER AND/OR CONDENSATE CAN COLLECT IN AN INSULATION BLANKET. A.O. SMITH WILL NOT BE LIABLE FOR ANY RUST OR CORROSION DAMAGE CAUSED BY THE INSTALLATION OF INSULATION BLANKETS.

WARNING

FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

EXTERNAL DAMAGE

Do not operate the water heater until it has been fully checked out by a qualified service technician, if the water heater:

•Has been exposed to fire or damage.

•Produces steam or unusually hot water.

If the water heater has been subject to flooding, it must be replaced.

INSTALLATION

REQUIRED ABILITY

INSTALLATION OR SERVICE OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED TRADESMAN IN THE FIELD INVOLVED. PLUMBING AND ELECTRICAL WORK INVOLVED.

GENERAL

The installation must conform to these instructions and the local code authority having jurisdiction. Grounding and electrical wiring connected to the water heater must also conform to the latest version of the NATIONAL ELECTRICAL CODE and NFPA-

70.Copies of these codes may be obtained from American National Standards Institute, 1430 Broadway, New York, NY 10018.

If your location requires the installation of the water heater to comply with National Sanitation Foundation requirements, the heater must be sealed to the floor so as to prevent seepage underneath the heater. The following are recommended sealants that may be used on all types of flooring except concrete: GE Silicone Seal RTV-120, 103, 108 and 109.

DO NOT TEST ELECTRICAL SYSTEM BEFORE HEATER IS FILLED WITH WATER, FOLLOW START UP PROCEDURE AS WRITTEN IN “OPERATION” SECTION OF THIS MANUAL.

The principal components of the heater are identified in figure

1.The model and rating plate on page 3 interprets certain markings into useful information. Both of these references should be used to identify the heater, its components and optional equipment.

LOCATION

For proper installation, the heater should be installed on a level surface.

LOCATE IT NEAR A FLOOR DRAIN. THE HEATER SHOULD BE LOCATED IN AN AREA WHERE LEAKAGE FROM THE HEATER OR CONNECTIONS WILL NOT RESULT IN DAMAGE TO THE ADJACENT AREA OR TO LOWER FLOORS OF THE STRUCTURE.

WHEN SUCH LOCATIONS CANNOT BE AVOIDED, A SUITABLE DRAIN PAN SHOULD BE INSTALLED UNDER THE HEATER. Such pans should be fabricated with sides at least 2” deep, with length and width at least 2” greater than the diameter of the heater and must be piped to an adequate drain. Drain pans suitable for these heaters are available from your distributor or A.O. Smith Water Products Company, Product Service Division, 5621 W. 115th St., Alsip, IL 60803.

Locate the heater close to the point of major hot water usage and the power supply.

•Try to make hot water piping and branch circuit wiring as short as possible.

•Insulate hot and cold water piping where heat loss and condensation may be a problem.

THE HEATER SHOULD NOT BE LOCATED IN AN AREA WHERE IT WILL BE SUBJECT TO FREEZING.

Suggested clearances from adjacent surfaces are 18 inches in front for access to the controls and elements and 12 inches from top. The heater may be installed on or against combustible surfaces.

CONNECTIONS

The heater water inlet is located on the side of the heater near the bottom. The heater outlet is located at the top of the heater.

Piping and wiring diagrams are included in this manual.

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Contents Dura-Power Electric Models Recovery Capacity DimensionsApprovals ContentsForeword Getting to Know Your Water Heater Installation General Safety InformationHydrogen GAS Flammable Temperature Limiting ControlRelief Devices ONE or TWO Temperature TWO Heater Piping DiagramONE or TWO Temperature ONE Heater ONE or TWO Temperature Four Heaters ONE or TWO Temperature Three HeatersMedium Temperature ONE Heater Horizontal Storage Tank Medium Temperature ONE Heater Vertical Storage TankMedium Temperature TWO Heaters Horizontal Storage Tank Medium Temperature TWO Heaters Vertical Storage TankMedium Temperature Three Heaters Horizontal Storage Tank Medium Temperature Three Heaters Vertical Storage TankPipe Relief Valve to Open Drain Branch Circuit ElectricalHeater Circuits Wiring Diagrams Power CircuitAmperage TABLE/OVERCURRENT Protection Control CircuitSmall Commercial Wire Diagram Phase Contactor Jumper Configuration Phase Connection Phase ConversionsSmall Commercial Wire Diagram Single Phase Operation Temperature RegulationFilling Start UPDraining MaintenanceFlushing Sediment RemovalNot enough or no hot water ChecklistIf YOU Cannot Identify or Correct the Source of Malfunction Replacement PartsLeakage Checkpoints Model DSE Limited Warranty Replacement Parts

DSE-5 THRU DSE-120 specifications

A.O. Smith is a well-known name in the water heating and treatment industry, recognized for its commitment to innovation and quality. Among its impressive range of products, the DSE-5 through DSE-120 series stands out as a reliable choice for both commercial and industrial water heating applications.

The DSE series is engineered to deliver superior performance and efficiency. These water heaters are designed with advanced technologies that ensure optimal heat transfer and energy conservation. One of the main features of the DSE series is its high efficiency ratings, often reaching up to 90% or higher. This means users can expect significant savings on energy costs while enjoying reliable hot water supply.

A notable characteristic of the DSE series is its robust design. Constructed from high-quality materials, these water heaters are built to withstand challenging operating environments. The series is available in varying capacities, from DSE-5, which accommodates smaller applications, to DSE-120, catering to larger needs. This versatility allows businesses to select the model that best suits their operational requirements.

A.O. Smith has also integrated state-of-the-art control technologies into the DSE series. These heaters feature advanced digital displays that provide real-time monitoring of temperature and pressure, ensuring optimal performance and safety. The intelligent controls enable users to set precise temperature settings, which can be easily adjusted, enhancing user convenience.

Moreover, the DSE series is equipped with multiple safety features, including over-temperature protection, flame failure detection, and build quality that meets or exceeds industry standards. This ensures not only effective operation but also peace of mind for users.

The DSE water heaters are also recognized for their eco-friendly designs. Many models incorporate options for low-emission combustion systems, making them suitable for environmentally-conscious businesses looking to reduce their carbon footprint.

In summary, the A.O. Smith DSE-5 through DSE-120 series embodies reliable, efficient, and innovative water heating solutions. With varying capacities, advanced control technologies, and a commitment to safety and sustainability, these water heaters are ideally suited for diverse commercial and industrial applications. Whether for a small business or a large industrial entity, the DSE series provides a dependable hot water supply while optimizing energy use.
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