A.O. Smith DB/DW-720-1810 warranty Hard Water Conditions

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HOT WATER SUPPLY APPLICATIONS

Where excessive heat exchanger condensation exists due to

continued low water inlet temperatures, a bypass balance loop

Cer-Temp 80 Recovery Systems

must be installed (see page 15).

 

WATER LINE CONNECTIONS

HARD WATER CONDITIONS

This section provides detailed installation diagrams for typical methods of application for the unit using a Cer-Temp 80 Recovery System (for one temperature water).

This equipment must be protected against loss of water or loss of water flow by the installation of a safety flow switch in the outlet piping from the boiler. Piping and wiring diagrams show the application of this accessory for this purpose.

These diagrams will serve to provide the installer with a reference for the materials and methods of piping necessary for installation. It is essential that all water and gas piping, vent connections, electrical wiring, and check and flow regulating valves be installed as shown on the diagrams.

Where hard water conditions exist, water softening or the threshold type of water treatment is recommended. This will protect the dishwashers, coffee urns, water heaters, water piping and other equipment. When water softening or water treatment is not practical, a comparatively easy method of periodic lime removal from the unit must be employed.

WARNING

Lime accumulation can reduce the life of the equipment, reduce efficiency and waste fuel. Boiler failure due to lime or scale build- up voids the warranty.

These units are so constructed that lime removal is simple and complete, see PREVENTIVE MAINTENANCE.

ONE DURA-MAX (MODEL DW) COMMERCIAL BOILER WITH VERTICAL TANK

CAUTION

TO PREVENT CONDENSATION THE MINIMUM BOILER INLET TEMPERATURE IS 100°F (38°C)

INSTALL IN ACCORDANCE WITH ALL LOCAL CODES.

SEE PAGE 31 FOR

ADDITIONAL PIPING INFORMATION.

IMPORTANT

SAFETY FLOW SWITCH AS SHOWN TO PROTECT THE BOILER IN CASE OF WATER SERVICE INTERRUPTION OR CIRCULATOR FAILURE.

*SAFETY RELIEF VALVE RATING SHOULD NOT EXCEED PRESSURE CAPACITY OF ANY COMPONENT IN THE SYSTEM.

CAUTION

PUMP MUST BE RATED FOR SYSTEM OPERATING TEMPERATURES AND PRESSURE.

SEE TABLE 7 FOR GUIDE TO PIPE AND PUMP SIZING.

+BALL VALVES ARE SHOWN FOR SERVICING BOILER, HOWEVER, LOCAL CODES SHALL GOVERN THEIR USAGE.

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Contents TM Models DB/DW-720-1810 Installation Operation Maintenance Limited WarrantyContents Replacement PartsForeword ROUGH-IN Dimensions Capacities Installation ClearancesLevelling Pressure Drop Electronic Intermittent Pilot Ignition Control FeaturesSafety Relief Valves Manual Reset High Temperature Safety Limit ControlDual Stage Models only HIGH/LOW Operator Automatic Reset High Temperature Limit ControlSafety Flow Switch Thermal BalancerAIR Requirements Installation InstructionsRequired Ability LocationVenting the Boiler Draft HoodVent Connection GAS Connections Connecting Boiler to a Common VentCorrect GAS PurgingExample High Altitude InstallationsWiring Connections Conventional InstallationsSystems Equipment Installation Circulating Pump Must be Properly Sized for Your Application Circulating PumpLOW Water Cutoff System InstallationTank Temperature Control Conventional Space Heating InstallationInstallation AS Boiler Replacement DB InstallationPage LINEAR-TEMP Space Heating Applications LINEAR-TEMP Space Heating InstallationsDuraMax Pump Performance Requirements Thermometer Pressure Gauge Safety Flow SwitchONE Boiler LINEAR-TEMP System Page Page Page Page Page Page ONE DURA-MAX Model DW Commercial Boiler with Vertical Tank Hard Water ConditionsONE DURA-MAX Model DW Commercial Boiler with Horizontal Tank NPT NPT Manifolding of Model TJV-120M & TJV-200M Tanks START-UP and Operating Instructions For Your Safety Read Before Operating Pilot Burner PrecautionsChecking and Adjusting the Input Internal ContaminantsTROUBLE-SHOOTING PRE-TROUBLE-SHOOTINGYES No Spark AT Pilot BurnerSpark AT Pilot Burner but Pilot will not Light Pilot Burner Lights but Main Burner does not Light Relief Valve General MaintenanceVenting Maintenance Heat Exchanger Preventive MaintenanceRemoval of AN Existing Boiler from a Common Venting System Deliming SolventsRemoving Light Deposits of Scale Mechanical Removal of DepositsDURA-MAX Limited Warranty Page Page Replacement Parts

DB/DW-720-1810 specifications

A.O. Smith has a longstanding reputation for quality and innovation in the water heater industry, and the DB/DW-720-1810 model exemplifies these values. This particular water heater is designed to provide reliable hot water, making it suitable for both residential and commercial applications. Its impressive features and cutting-edge technologies set it apart from conventional models.

One of the primary features of the A.O. Smith DB/DW-720-1810 is its energy efficiency. It operates using advanced insulation technologies, minimizing heat loss and promoting energy savings. This model is designed with a high-efficiency burner that substantially reduces energy consumption while maintaining optimal performance. It also complies with industry standards for energy efficiency, ensuring that users can enjoy lower utility bills without sacrificing comfort.

The DB/DW-720-1810 is equipped with a robust tank designed to hold an ample supply of hot water. With a capacity of 75 gallons, it is ideal for households with high demand, such as multi-bathroom residences or commercial establishments. This large capacity ensures that hot water is readily available for various activities, from bathing to cleaning.

User control is another notable characteristic of the A.O. Smith DB/DW-720-1810. The model features an intuitive digital display that allows users to monitor and set water temperatures easily. This interface not only enhances usability but also promotes safety, preventing scalding by allowing users to adjust the temperature to their preference.

Durability is a key consideration in the DB/DW-720-1810’s design. It is built with high-quality materials and features a corrosion-resistant tank, ensuring longevity even in challenging water conditions. This resilience is further supplemented by A.O. Smith's advanced anode rod technology, which helps battle corrosion and extends the lifespan of the water heater.

Lastly, maintenance is simplified with this model. A.O. Smith has designed the water heater for easy access to serviceable parts, making routine maintenance more convenient and less time-consuming. Coupled with warranty options that provide peace of mind, the DB/DW-720-1810 stands out as a dependable choice.

In summary, the A.O. Smith DB/DW-720-1810 combines energy efficiency, significant capacity, user-friendly controls, durability, and low maintenance needs, making it an exceptional option for those needing a reliable hot water solution.
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