background image

4

thank you

 for purchasing this water heater.  Properly installed and 

maintained, it should give you years of trouble free service.

Abbreviations Found In This Instruction Manual:
•  ANSI - American National Standards Institute
•  ASME - American Society of Mechanical Engineers
•  GAMA - Gas Appliance Manufacturer’s Association 
•  NEC - National Electrical Code
•  NFPA - National Fire Protection Association
•  UL - Underwriters Laboratory

preparInG for the InstallatIon

1.  Read the “General Safety” section of this manual first and then 

the entire manual carefully.  If you don’t follow the safety rules, 

the water heater may not operate safely.  It could cause DEATH, 

SERIOUS BODILY INJURY AND/OR PROPERTY DAMAGE.

 

This manual contains instructions for the installation, operation, 

and maintenance of the electric water heater.  It also contains 

warnings throughout the manual that you must read and be aware 

of.  All warnings and all instructions are essential to the proper 

operation of the water heater and your safety.  

read the entIre 

Manual Before atteMptInG to Install or operate 

the water heater.

2.  The  installation  must  conform  with  these  instructions  and  the 

local code authority having jurisdiction and the requirements of 

the power company. In the absence of code requirements, follow 

NFPA-70 (current edition). The National Electrical Code may be 

ordered from: National Fire Protection Association, 1 Batterymarch 

Park, Quincy, MA 02269.

3.  If after reading this manual you have any questions or do not 

understand any portion of the instructions, contact A.O. Smith 

Water Products Customer Care Center at 1-800-527-1953. 

  A sample rating plate and barcode tag are shown on page 3 of this 

manual.

 In order to expedite your request, please have the serial

 

number and item

 ID from the barcode tag available for the technician.

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 installation in California this water heater must be braced or 

anchored to avoid falling or moving during an earthquake. See 

instructions for correct installation procedures. Instructions may 

be obtained from California Office of the State Architect, 1102 Q 

Street, Suite 5100, Sacramento, CA 95811.

6.  Massachusetts Code requires this water heater to be installed in 

accordance with Massachusetts 248-CMR 2.00: State Plumbing 

Code and 248-CMR 5.00.

IntroductIon

SAFE INSTALLATION, USE AND SERVICE

............................2

GENERAL SAFETY

..................................................................3

TABLE OF CONTENTS

 ............................................................4

INTRODUCTION

 ......................................................................4

 

Preparing for the New Installation

 .....................................4

DIMENSIONS AND CAPACITIES DATA

 ..................................

5

FEATURES AND COMPONENTS

 ....................................... 6-7

LOCATING THE NEW WATER HEATER

 .................................

8

INSTALLATION

 ........................................................................

8

 

Required Ability

 .................................................................

8

 

General

 .............................................................................

8

 

Mixing Valve Usage

 ..........................................................

8

 

Chemical Vapor Corrosion

 ................................................

8

 

Circulating Pump

...............................................................9

 

Insulation Blankets ............................................................9

 

Temperature-Pressure Relief Valve

 ..................................9

ELECTRICAL

 .........................................................................10

 

General

 ...........................................................................10

 

Branch Circuit

 .................................................................10

 

Heater Circuits

 ................................................................10

 

Control Circuits

 ...............................................................10

 

Power Circuits

 .................................................................10

ELECTRICAL AND RECOVERIES DATA

 ...............................11

WIRING DIAGRAMS

 ........................................................ 12-13

OPERATION ...........................................................................14

 

General

 ...........................................................................14

 

Filling the Water Heater ..................................................14

 

Start Up

 ...........................................................................14

 

Draining the Water Heater ..............................................14

TEMPERATURE REGULATION

 ............................................14

 

Temperature Adjustment

 .................................................

15

 

High Termperature Devices

 ............................................

15

MAINTENANCE

 .....................................................................

15

 

General

 ...........................................................................

15

 

Temperature-Pressure Relief Valve Operation

 .........

15-16

 

Flushing ..........................................................................16

 

Sediment Removal..........................................................16

 

Water and LIme Scale Removal

 .....................................16

 

Strange Sounds ........................................................ 16-17

TROUBLESHOOTING CHECKLIST

 ......................................17

 

Not Enough or No Water .................................................17

 

Water Is Too Hot .............................................................17

 

Water Heater Makes Strange Sounds

 ............................17

 

Leakage Checkpoints

 .....................................................17

 

If You Cannot Identify or Correct the Source of Malfunction

 ........... 17

WARRANTY

 ...........................................................................

18

NOTES ...................................................................................19

taBle of contents

Содержание DVE-150, DHE-200

Страница 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...

Страница 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...

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

Страница 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...

Страница 5: ...5 dimensions and capacities data...

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

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

Страница 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...

Страница 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...

Страница 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...

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

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

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 19: ...19 NOTES...

Страница 20: ...20 www aosmithwaterheaters com...

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