A.O. Smith DSE-5 THRU DSE-120 warranty Relief Devices, Temperature Limiting Control

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RELIEF DEVICES

An unplugged 3/4” relief valve opening is provided for installing temperature and pressure relief valve.

CAUTION: TO REDUCE THE RISK OF EXCESSIVE PRESSURES AND TEMPERATURE IN THIS WATER HEATER INSTALL TEMPERATURE AND PRESSURE PROTECTIVE EQUIPMENT REQUIRED BY LOCAL CODES but not less than a combination temperature and pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials, as meeting the requirements for relief valve devices for hot water supply systems, ANSI Z21.22 (latest version).

This valve must be marked with a maximum set pressure not to exceed the marked maximum working pressure of the water heater. INSTALL THE VALVE INTO THE OPENING PROVIDED AND MARKED FOR THIS PURPOSE IN THE WATER HEATER, AND ORIENT IT OR PROVIDE TUBING SO THAT ANY DISCHARGE FROM THE VALVE WILL EXIT ONLY WITHIN 6 INCHES ABOVE, OR AT ANY DISTANCE BELOW THE STRUCTURAL FLOOR AND CANNOT CONTACT ANY LIVE ELECTRICAL PART. THIS DISCHARGE OPENING MUST NOT BE BLOCKED OR REDUCED IN SIZE UNDER ANY CIRCUMSTANCES.

The pressure setting of the relief valve should not exceed the pressure capacity of any component in the system. The temperature setting of the relief valve should not exceed 210°F.

TEMPERATURE LIMITING CONTROL

The heater control circuit contains a high temperature cutoff switch which operates if excessive water temperatures are reached. The high temperature cutoff contacts open at 190°F and must be manually reset (after a 30°F drop in water temperature). Disconnect the power before resetting button.

HYDROGEN GAS (FLAMMABLE)

CAUTION

HYDROGEN GAS CAN BE PRODUCED IN A HOT WATER SYSTEM SERVED BY THIS HEATER THAT HAS NOT BEEN USED FOR A LONG PERIOD OF TIME (GENERALLY TWO WEEKS OR MORE). HYDROGEN GAS IS EXTREMELY FLAMMABLE. To reduce the risk of injury under these conditions, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system. If hydrogen is present, there will probably be an unusual sound such as air escaping through the pipe as the water begins to flow. THERE SHOULD BE NO SMOKING OR OPEN FLAME NEAR THE FAUCET AT THE TIME IT IS OPEN.

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Contents Dura-Power Electric Models Dimensions Recovery CapacityContents ForewordApprovals Getting to Know Your Water Heater General Safety Information InstallationTemperature Limiting Control Relief DevicesHydrogen GAS Flammable Piping Diagram ONE or TWO Temperature ONE HeaterONE or TWO Temperature TWO Heater ONE or TWO Temperature Three Heaters ONE or TWO Temperature Four HeatersMedium Temperature ONE Heater Vertical Storage Tank Medium Temperature ONE Heater Horizontal Storage TankMedium Temperature TWO Heaters Vertical Storage Tank Medium Temperature TWO Heaters Horizontal Storage TankMedium Temperature Three Heaters Vertical Storage Tank Medium Temperature Three Heaters Horizontal Storage TankPipe Relief Valve to Open Drain Electrical Branch CircuitAmperage TABLE/OVERCURRENT Protection Power CircuitHeater Circuits Wiring Diagrams Control CircuitSmall Commercial Wire Diagram Phase Conversions Phase Contactor Jumper Configuration Phase ConnectionSmall Commercial Wire Diagram Single Phase Filling Temperature RegulationOperation Start UPFlushing MaintenanceDraining Sediment RemovalChecklist Not enough or no hot waterReplacement Parts If YOU Cannot Identify or Correct the Source of MalfunctionLeakage 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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