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instruction manual
residential electric
2.5 Gallon 120 volt
water heater
for potaBle water
heatinG onlY
not suitaBle for
space heatinG
listed
all technical and warrantY questions: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS
PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE WRITE TO THE COMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER.
Keep this manual in the pocKet on heater for future reference
when ever maintenance adjustment or service is required.
PRINTED 0707
85834-000
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Table of Contents
Related Manuals for A.O. Smith AOSRE50400
Summary of Contents for A.O. Smith AOSRE50400
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Page 1: Instruction Manual
instruction manual residential electric 2.5 Gallon 120 volt water heater for potaBle water heatinG onlY not suitaBle for space heatinG listed all technical and warrantY questions: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE WRITE TO THE COMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER. Keep this manual in the pocKet on heater for future reference when ever maintenance adjustment or service is required. -
Page 2: Important Definitions
safe installation, use and service Your safety and the safety of others is extremely important in the installation, 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. -
Page 3: General Safety
General safetY... -
Page 4: Table Of Contents
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 •... -
Page 5: Typical Installation
water (potable) heating: All models are considered suitable for water (potable) heating only. tYpical installation miXinG valve usaGe fiGure 2. HOTTER WATER CAN SCALD: Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, and other sanitizing needs can scald and permanently injure you upon contact. -
Page 6: Locating The New Water Heater
locatinG the new water heater facts to consider aBout the location 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. -
Page 7: Installing The New Water Heater
installinG the new water heater mountinG mountinG - drYwall (hollow wall) 1. The selected wall or cabinet must be capable of supporting double the weight of the unit when completely full of water (77 Ibs). 2. The installation area must provide adequate clearances for removal of the front panel and servicing the unit. -
Page 8: Water Piping Pressure Test
This water heater shall not be connected to any heating systems or component(s) used with a non-potable water heating appliance. Toxic chemicals, such as those used for boiler treatment shall not be introduced into this system. Water supply systems may, because of such events as high line pressure, frequent cut-offs, the effects of water h a m m e r a m o n g o t h e r s , h a v e i n s t a l l e d d e v i c e s s u c h a s p r e s s u r e r e d u c i n g v a l v e s , c h e c k v a l v e s , b a c k f l o w... -
Page 9: Filling The Water Heater
This heater is provided with a properly certified combination temperature - pressure relief valve by the manufacturer. The valve is certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment of materials as meeting the requirements for Relief Valves for Hot Water Supply Systems, ANSI Z21.22 •... -
Page 10: Wiring Diagram
wirinG diaGram fiGure 5. -
Page 11: Wiring
Never use the water heater unless it is completely full of water. To prevent damage to the tank and the heating element, the tank must be filled with water. Water must flow from the hot water faucet before turning on the power. wirinG You must provide all wiring of the proper size outside of the water heater. -
Page 12: Temperature Settings
temperature reGulation HOTTER WATER CAN SCALD: Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, and other sanitizing needs can scald and permanently injure you upon contact. Some people are more likely to be permanently injured by hot water than others. -
Page 13: Thermal Expansion
thermal eXpansion Water 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-pass, and no other measures are taken, the devices cause the water system to be closed. -
Page 14: Periodic Maintenance
anode rod inspection The anode rod is used to protect the tank from corrosion. Most hot water tanks are equipped with an anode rod. The submerged rod sacrifices itself to protect the tank. Instead of corroding the tank, water ions attack and eat away the anode rod. This does not affect the water’s taste or color. -
Page 15: Thermostat Removal/Replacement
3. Using a Philips screwdriver, unscrew the bottom screw securing the outer door, see Figure 8. 4. Lift up and remove front panel. fiGure 8. thermostat removal / replacement R E M O V A L 1. Turn off and unplug the water heater from the electrical outlet. 2. -
Page 16: High Limit Switch Removal And Replacement
water inlet and outlet, open the nearest hot water tap and follow filling instructions. Never use this water heater unless it is completely full of water. To prevent damage to the tank and heating element, the tank must be filled with water. Water must flow from the hot water faucet before turning “ON”... -
Page 17: Leakage Checkpoints
leaKaGe checKpoints fiGure 12. Read this manual first. 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. -
Page 18: Troubleshooting Guidelines
trouBleshootinG Guidelines These guidelines should be utilized by a qualified service agent. problem water leaKs (see leakage checkpoints in this manual) no hot water insufficient hot water hiGh operation costs slow hot water recoverY drip from relief valve thermostat does not shut off water odor water heater sounds possible cause(s) -
Page 19: Repair Parts List
element Gasket anode rod element assembly with Gasket, anode & fasteners high limit with personnel Barrier temperature sensor and thermostat mounting Bracket front panel temperature control Knob heat traps dip tube temperature-pressure relief valve element Bolts personnel Barrier manual * not illustrated. repair parts list Now that you have purchased this water heater, should a need ever exist for repair parts or service, simply contact the company... - Page 20 residential electric warrantY THIS WARRANTY IS APPLICABLE TO THE ORIGINAL OWNER ONLY. In accordance with the warranty terms and conditions specified below. A. O. Smith Corporation (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 water heater leaks and, 2) a replacement part for any component part which fails.
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Page 21: Installation Information
Replacement Parts may be ordered through authorized servicers or distributors. Refer to your local Yellow Pages for where to call or contact A.O. Smith Corporation, 500 Tennessee Waltz Parkway, Ashland City, TN 37015. Phone: 1.800.433.2545 or visit our website at: www. - Page 22 notes: ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________...
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