background image

2

safe InstallatIon, use, and serVIce

the proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others.

Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and 

others of a potential injury hazard.  read and obey all safety messages and instructions throughout this manual.  It is very important 

that the meaning of each safety message is understood by you and others who install, use, or service this water heater.

 

this is the safety alert symbol.  It is used to alert you 

to potential personal injury hazards.  obey all safety 

messages  that  follow  this  symbol  to  avoid  possible 

injury or death.

all safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message, and 

how to avoid the risk of injury.

IMportant defInItIons

•  

  Qualified Installer or Service Agency:

  Installation and service of this water heater requires ability equivalent to 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 

responsible for (a) the installation, testing or replacement of gas piping or (b) the connection, installation, testing, repair or servicing of 

appliances and equipment; that is experienced in such work; that is familiar with all precautions required; and that has complied with all 

the requirements of the authority having jurisdiction.”

  danGer 

  warnInG 

  cautIon  

danGer indicates an imminently hazardous 

situation which, if not avoided, could result 

in death or injury.

warnInG indicates a potentially hazardous 

situation which, if not avoided, could result 

in death or injury.

cautIon  indicates a potentially hazardous 

situation which, if not avoided, may result 

in minor or moderate injury.

cautIon  used  without  the  safety  alert 

symbol indicates a potentially hazardous 

situation which, if not avoided, could result 

in property damage.

cautIon

Summary of Contents for DVE-150, DHE-200

Page 1: ...ce 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...

Page 2: ...hat 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 tes...

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: ...chnician 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 INSTALLATIO...

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: ...BILITY 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 aut...

Page 9: ...g 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 temperat...

Page 10: ...ater 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 i...

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: ...e 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 t...

Page 15: ...pped 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 corr...

Page 16: ...re 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...

Page 17: ...kes 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 sho...

Page 18: ...he 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 Shipp...

Page 19: ...19 NOTES...

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

Reviews: