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A.O. Smith WATER HEATERS manual

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Table of contents for the manual

  • Page 1

    1 Instruction Manual PRINTED IN THE U.S.A 1203 P ART NO. 184639-000 KEEP THIS MANUAL IN THE POCKET ON HEA TER FOR FUTURE REFERENCE WHEN EVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED. ALL TECHNICAL AND W ARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE W A TER HEA TER WAS PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE WRITE T[...]

  • Page 2

    2 SAFE INST ALLA TION, USE AND SERVICE Y our safety and the safety of others is extremely important in the inst allation, use and servicing of this water heater . 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 [...]

  • Page 3

    3 GENERAL SAFETY SAFE INST ALLA TION, USE AND SERVICE .............................. 2 GENERAL SAFETY .................................................................. 3 T ABLE OF CONTENTS .............................................................. 3 INTRODUCTION ........................................................................ 4 Prepari[...]

  • Page 4

    4 Thank Y ou for purchasing this water heater. Properly inst alled and maintained, it should give you years of trouble free service. Abbreviations Found In This Instruction Manual: • ANSI - American National S tandards Institute • ASME - American Society of Mechanical Engineers • GAMA - Gas Appliance Manufacturer ’s Association • NEC - Na[...]

  • Page 5

    5 TYPICAL INST ALLA TION FIGURE 1. UPRIGHTS COMP ACTS T ABLE TOPS INSTA LL V ACUUM RELIEF IN COLD W A TER INLET LINE AS REQUIRED BY LOCAL CODES. INST ALL SUIT ABLE D RAIN P ANS UNDER HEA TERS TO PREVENT DAMAGE DUE TO LEAKAGE. REFER TO W A TER HEATER LOCATION ON P AGE 8. INST ALL THERMAL EXP ANSION T ANK OR DEVICE IF WA TER HEA TER IS INST ALLED IN [...]

  • Page 6

    6 WIRING DIAGRAMS TURN OFF THE HEA TER ELECTRICAL SUPPL Y BEFORE SERVICING ANY ELECTRICAL COMPONENTS. FIGURE 2. A-9 240 VOL T “OFF PEAK” NON-SIMUL T ANEOUS OPERA TION BOTTOM ELEMENT ON SEP ARA TE TIME CLOCK OR “OFF PEAK” METER C-2 TWO WIRE CIRCUIT FOR SINGLE ELEMENT HEA TERS EQUIPPED WITH HIGH LIMIT CONTROL A-6 TWO WIRE CIRCUIT FOR NON-SIMU[...]

  • Page 7

    7 MIXING V A L VE USAGE FIGURE 3. W ater (Potable) Heating: All models are considered suitable for water (potable) heating only . HOTTER W A TER CAN SCALD: W ater heaters are intended to produce hot water . W ater heated to a temperature which will satisfy space heating, clothes washing, dish washing, and other sanitizing needs can scald and perman[...]

  • Page 8

    8 FACTS TO CONSIDER ABOUT THE LOCA TION Carefully choose an indoor location for the new water heater , because the placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance. Whether replacing an old water heater or putting the water heater in a new location, the foll[...]

  • Page 9

    9 The water within the water heater tank expands as it is heated and increases the pressure of the water system. If the relieving point of the water heater’s temperature-pressure relief valve is reached, the valve will relieve the excess pressure. The temperature-pressure relief valve is not intended for the constant relief of thermal expansion. [...]

  • Page 10

    10 The Discharge Pipe: • Shall not be smaller in size than the outlet pipe size of the valve, or have any reducing couplings or other restrictions. • Shall not be plugged or blocked. • Shall be of material listed for hot water distribution. • Shall be installed so as to allow complete drainage of both the temperature-pressure relief valve, [...]

  • Page 11

    11 KEEPING THE THERMOST A T SETTING A T 120°F WILL REDUCE THE RISK OF SCALDS. Figure 7 shows the approximate time-to-burn relationship for normal adult skin. The thermostats on your water heater have a linear relationship between degrees of angular rotation and the corresponding change in temperature. Thus rotating the temperature adjustment indic[...]

  • Page 12

    12 THERMAL EXP ANSION W ater supply systems may , because of such events as high line pressure, frequent cut-offs, the effects of water hammer among others, have installed devices such as pressure reducing valves, check valves, back flow preventers, etc. to control these types of problems. When these devices are not equipped with an internal by-pas[...]

  • Page 13

    13 The water heater should be drained if being shut down during freezing temperatures. Also periodic draining and cleaning of sediment from the tank may be necessary . 1 . Turn electrical supply “OFF”. 2 . CLOSE the cold water inlet valve to the water heater . 3 . OPEN a nearby hot water faucet and leave open to allow for draining. 4 . Connect [...]

  • Page 14

    14 LEAKAGE CHECKPOINTS Read this manual first. Then before checking the water heater make sure the electrical power supply has been turned “OFF” before checking the tank for leakage. *A. Condensation and dripping may be seen on pipes if the water temperature is low in humid weather or pipe connections may be leaking. * B. The anode rod fitting [...]

  • Page 15

    15 REP AIR P ARTS LIST DRAIN P A N 17 12 16 8 11 14 14 7 1 3 6 4 2 3 9 10 15 Key No. Part Description 1 Upper Heating Element (If Dual Element Unit) 2 Lower Heating Element 3 Element Gasket 4 Lower Thermostat (If Dual Element Unit) 5 Upper Thermostat w/ECO (If Dual Element Unit) 6 Lower Thermostat w/ECO (If Single Element Unit) 7 Outer Door(s) 8 In[...]

  • Page 16

    16 These guidelines should be utilized by a qualified service agent. TROUBLESHOOTING GUIDELINES Improperly sealed, hot or cold supply connection, relief valve or drain valve. Leakage from other appliances or water lines. Thermal expansion in closed water system. Improperly seated valve. High sulfate or mineral content in water supply . Bacteria in [...]

  • Page 17

    17 RESIDENTIAL ELECTRIC W ARRANTY THIS W ARRANTY IS APPLICABLE TO THE ORIGINAL OWNER ONL Y . In accordance with the warranty terms and conditions specified below . A. O. Smith Water Heaters (the warrantor) will furnish the ORIGINAL OWNER, 1) a replacement A. O. Smith water heater of equivalent size and current model if the glasslined tank in this w[...]

  • Page 18

    18 without invalidating the remainder of the affected provision or the other provisions of this warranty . SERVICE AND LABOR RESPONSIBILITY UNDER THIS LIMITED W ARRANTY , THE WARRANTOR WILL PROVIDE ONL Y A REPLACEMENT W A TER HEA TER OR P ART THEREOF . THE OWNER IS RESPONSIBLE FOR ALL OTHER COSTS. Such costs may include but are not limited to: a. L[...]

  • Page 19

    19 NOTES: ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ____________________________[...]

  • Page 20

    20 www.aosmithwaterheaters.com[...]