A.O. Smith DHE-10.000, Installation And Operaion Manual

Page 1: ...nce COMMERCIAL ELECTRIC WATER HEATERS ASME Thank you for buying this energy efficient water heater fromA O Smith Water Products Company We appreciate your confidence in our products MODELS DVE 150 THRU DVE 10000 DHE 200 THRU DHE 10000 INSTALLATION OPERATION SERVICE MAINTENANCE LIMITED WARRANTY A DIVISION OF A O SMITH CORPORATION RENTON WASHINGTON ...

Page 2: ...that of a Qualified Agency as defined by ANSI below in the field involved Installation skills such as plumbing air supply venting gas supply electrical supply are required in addition to electrical testing skills when performing service ANSI Z223 1 2006 Sec 3 3 83 Qualified Agency Any individual firm corporation or company that either in person or through a representative is engaged in and is resp...

Page 3: ...3 GENERAL SAFETY When servicing this unit verify the power to the unit is turned off prior to opening the control cabinet door ...

Page 4: ...echnician 4 Carefully plan your intended placement of the water heater Examine the location to ensure the water heater complies with the Locating the New Water Heater section in this manual INSTALLATION AND SERVICE OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED TRADESMAN OR QUALIFIED AGENCY Page 2 IN THE FIELD INVOLVED PLUMBING AND ELECTRICAL WORK ARE REQUIRED 5 For install...

Page 5: ...5 dimensions and capacities data ...

Page 6: ...6 FEATURES AND COMPONENTS NOTE Your actual configuration may vary DVE Vertical Water Heater typical ...

Page 7: ...7 FEATURES AND COMPONENTS NOTE Your actual configuration may vary DHE Horizontal Water Heater typical ...

Page 8: ...ABILITY EQUIVALENT TO THAT OF A QUALIFIED AGENCY PAGE 2 IN THE FIELD INVOLVED PLUMBING AND ELECTRICAL WORK IS REQUIRED 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 National Electrical Code NFPA70 This publication is available fromThe National Fire P...

Page 9: ...ng the requirements for Relief Valves for Hot Water Supply Systems ANSI Z21 22 and the ASME code If replaced the valve must meet the requirements of local codes but not less than a combination temperature and pressure relief valve certified as indicated in the above paragraph Contact the A O Smith Customer Care Center for replacement temperature pressure relief valves 800 527 1953 The valve must b...

Page 10: ...water heater Heater Circuits The water heater s electrical components are pictured and identified by the Features and Components illustrations on pages 6 and 7 The model and rating plate illustration identifies the heater electrical characteristics The heater has two electrical circuits Control Circuit 120V circuit containing all safety and control devices The control circuit operates the contacto...

Page 11: ...11 electrical and recoveries data TABLE 2 ...

Page 12: ...12 WIRING DIAGRAMS TURN OFF THE HEATER ELECTRICAL SUPPLY BEFORE SERVICING ANY ELECTRICAL COMPONENTS 300 600 VOLTS STANDARD THERMOSTAT CONTROL WIRING WYE ...

Page 13: ...13 WIRING DIAGRAMS TURN OFF THE HEATER ELECTRICAL SUPPLY BEFORE SERVICING ANY ELECTRICAL COMPONENTS 208 240 VOLTS STANDARD THERMOSTAT CONTROL WIRING DELTA ...

Page 14: ...be manually de energized if full capacity is not needed Filling the Water Heater To fill the water heater with water 1 Turn off the electrical disconnect switch 2 Turn off pilot toggle switch 3 Close the heater drain valve 4 Open a nearby hot water faucet to allow the air in the system to escape 5 Fully open the cold water inlet valve filling the heater and piping 6 Close the hot water faucet when...

Page 15: ...ipped with a sacrificial anode Anodes protect the glass lined tank from corrosion by sacrificing themselves through electrolysis When the anode material is consumed there is no more protection and corrosion of the tank accelerates Inspection of the anode every 6 to 12 months allows you to identify a spent anode and replace it Replace the anode when its diameter is 3 8 1 cm of an inch or annually w...

Page 16: ...ure of the water is increased more scale is deposited on the elements 3 Mineral level characteristics of the water supply Regardless of water treatment the elements should be examined regularly STRANGE SOUNDS Water scale accumulations may cause noises to occur during operation It is recommended that a lower heating element be removed periodically for examination If it is scaled all of the elements...

Page 17: ...akes strange sounds 1 Sediment or lime scale accumulations on the elements causes sizzling and hissing noises when the heater is operating The sounds are normal however the tank bottom and elements should be cleaned Refer to MAINTENANCE section of this manual for details 2 Some of the electrical components of the water heater make sounds which are normal ie contactors will Click or snap as the hea...

Page 18: ...The owner is responsible for all other costs Such costs may include but are not limited to a Labor charges for service removal repair or reinstallation of the water heater or any component part b Shipping delivery handling and administrative charges for forwarding the new heater or replacement part from the nearest distributor and returning the claimed defective heater or part to such distributor ...

Page 19: ...19 NOTES ...

Page 20: ...20 www aosmithwaterheaters com ...