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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
•  AHRI - Air-Conditioning, Heating and Refrigeration Institute
•  NEC - National Electrical Code
•  NFPA - National Fire Protection Association
•  UL - Underwriters Laboratory

PREPARING FOR THE INSTALLATION

1. 

Read the “General Safety Information” 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.

  Be sure to turn off power when working on or near the 

electrical system of the heater. Never touch electrical 

components with wet hands or when standing in water. 

When  replacing  fuses  always  use  the  correct  size  for  the 

circuit, see tables on page 11.

   The  model  and  rating  plates  on  page  6  interprets  certain 

markings into useful information. Both of these references should 

be used to identify the heater, its components and optional 

equipment.

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  local  codes,  the 

installation must comply with the latest editions of the National 

Electrical Code, NFPA 70 or the Canadian Electrical Code CSA 

C22.1. The National Electrical Code may be ordered from: 

National  Fire  Protection Association,  1  Batterymarch  Park, 

Quincy, MA 02269. The Canadian Electrical Code is available 

from the Canadian Standards Association, 8501 East Pleasant 

Valley Road, Cleveland, OH 44131.

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

understand  any  portion  of  the  instructions,  call  the  toll  free 

number listed on the back cover of this manual for technical 

assistance. 

  A sample rating plate is shown on page 6 of this manual. In 

order to expedite your request, please have full model and serial 

number 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.

TABLE OF CONTENTS

INTRODUCTION

SAFE INSTALLATION, USE, AND SERVICE.......................................

2

GENERAL SAFETY INFORMATION ....................................................

3

Precautions ..................................................................................

3

Hydrogen Gas (Flammable) .........................................................

3

INTRODUCTION ..................................................................................

4

Preparing for the Installation

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

4

DIMENSIONS AND CAPACITIES DATA .............................................. 5
APPROVALS ........................................................................................

6

MODEL AND RATING ..........................................................................

6

FEATURES AND COMPONENTS .......................................................

7

LOCATING THE NEW WATER HEATER ............................................. 8

Facts to Consider About the Location .......................................... 8
Clearances ................................................................................... 8

INSTALLATION ....................................................................................

9

Required Ability ............................................................................

9

General .........................................................................................

9

Contaminated Water .....................................................................

9

Circulating Pump ..........................................................................

9

Insulation Blankets .......................................................................

9

Temperature-Pressure Relief Valve ..............................................

9

Closed Water Systems ...............................................................

10

Thermal Expansion ....................................................................

10

ELECTRICAL ......................................................................................

11

General ........................................................................................

11

Branch Circuit ..............................................................................

11

Calculating Amperage/Overcurrent Protection ............................

11

WIRING DIAGRAMS ..........................................................................

12

OPERATION .......................................................................................

13

General .......................................................................................

13

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

13

Initial Start Up .............................................................................

13

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

13

TEMPERATURE REGULATION ........................................................

14

Temperature Adjustment ............................................................

14

MAINTENANCE ................................................................................. 15

General ....................................................................................... 15
Anode Rod Inspection ................................................................ 15

TROUBLESHOOTING CHECKLIST ..................................................

16

Checklist .....................................................................................

16

Leakage Checkpoints .................................................................

17

WARRANTY ....................................................................................... 18

Repair Parts List .........................................................................

19

NOTES ...............................................................................................

21

Содержание LTE 66D

Страница 1: ...P FOR FUTURE REFERENCE COMMERCIAL ELECTRIC WATER HEATERS Thank you for buying this energy efficient water heater We appreciate your confidence in our products 500 Tennessee Waltz Parkway Ashland City...

Страница 2: ...ition 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...

Страница 3: ...be run with the circuit conductors and connected to the equipment grounding terminal or lead on the water heater HYDROGEN GAS FLAMMABLE Hydrogen gas can be produced in a hot water system served by thi...

Страница 4: ...Code CSA C22 1 The National Electrical Code may be ordered from National Fire Protection Association 1 Batterymarch Park Quincy MA 02269 The Canadian Electrical Code is available from the Canadian St...

Страница 5: ...5 102 92 85 77 73 4000 4000 GPH 90 81 60 54 45 41 36 32 30 27 26 8 LPH 341 307 227 205 170 153 136 123 114 102 97 4500 4500 GPH 101 91 68 61 51 46 41 36 34 30 29 9 LPH 384 345 256 230 192 173 153 138...

Страница 6: ...c MODEL NUMBER 22U1 COMMERCIAL STORAGE TANK WATER HEATER WATTS LOWER MAX WORKING PRESSURE PSI 1 PH 3 PH 1 PH 3 PH RATED MEASURED WATTS INTERLOCK SIMULTANEOUS CAPACITY US GAL STANDBY LOSS TOTAL WATTS C...

Страница 7: ...LVE INSTALL VACUUM RELIEF IN COLD WATER INLET LINE AS REQUIRED BY LOCAL CODES INSTALL SUITABLE DRAIN PANS UNDER WATER HEATERS TO PREVENT DAMAGE DUE TO LEAKAGE REFER TO WATER HEATER LOCATION ON PAGE 8...

Страница 8: ...er heaters are sometimes installed in locations where leakage may result in property damage even with the use of a drain pan piped to a drain However unanticipated damage can be reduced or prevented b...

Страница 9: ...imum of 125 degree F Consult a qualified installer or service agency Follow all manufacturer s Instructions for installation of these valves Before changing the factory setting on the thermostat read...

Страница 10: ...at an adequate drain inside the building Shall not have any valve or other obstruction between the relief valve and the drain The temperature pressure relief valve must be manually operated at least...

Страница 11: ...t 2 Four wire T 4 circuit for dual element water heater equipped with two high limit controls and single phase power input This is an example of calculating heater amperage for both types of element o...

Страница 12: ...LT NON SIMULTANEOUS SINGLE PHASE OPERATION RED BLACK YELLOW BLUE BLACK RED BLACK BLACK BLACK RED RED RED BLACK RED BLACK T 4 208 or 240 VOLT SIMULTANEOUS OPERATION SINGLE PHASE OPERATION GND GREEN GND...

Страница 13: ...ghtness Also check connections on top and or sides of heater Repair water leaks and tighten electrical connections as necessary 3 Depress the red manual reset button on each Thermostat ECO combination...

Страница 14: ...1st Degree Burn Less Severe Burns Time for Permanent Burns 2nd 3rd Degree Most Severe Burns 110 43 normal shower temp 116 47 pain threshold 116 47 35 minutes 45 minutes 122 50 1 minute 5 minutes 131...

Страница 15: ...y the anode rod This does not affect water s taste or color The rod must be maintained to keep tank in operating condition Anode deterioration depends on water conductivity not necessarily water condi...

Страница 16: ...ating The sounds are normal however the tank bottom and elements should be cleaned See the Maintenance section of this manual WATER LEAKAGE IS SUSPECTED Refer to Leakage Checkpoint on the following pa...

Страница 17: ...ary to shut off electricity and drain tank to perform procedure Water leaks at the elements may be due to 1 Defective element which leaks at terminals or thru flange Replace element 2 Loose element ga...

Страница 18: ...gas supply line sizing gas type venting connections combustion air voltage wiring or fusing Failure to follow applicable codes Failure to follow printed instructions Abuse misuse accident fire flood...

Страница 19: ...on the rating plated located above the lower access panel Be sure to provide all pertinent facts when you call or visit WHEN ORDERING REPAIR PARTS ALWAYS GIVE THE FOLLOWING INFORMATION MODEL NUMBER VO...

Страница 20: ...TAGE CHART K W ELEMENT WATTAGE 208V 240V PART NO PART NO 3 0 3000 9003956115 9001879005 3 5 3500 9000092015 9003948115 4 0 4000 9003951115 9003956115 4 5 4500 9002645005 9000092015 5 0 5000 9004688105...

Страница 21: ...21 NOTES...

Страница 22: ...22 NOTES...

Страница 23: ...23 NOTES...

Страница 24: ...24 www hotwater com 500 Tennessee Waltz Parkway Ashland City TN 37015 Tech Support 800 527 1953 Parts 800 433 2545 Copyright 2016 A O Smith Water Heater Company All rights reserved...

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