Rheem XE50M12EC45U0 Instructions / Assembly
Contents
1. plumbing contractor or previously agreed upon service agency In the event the firm has moved or is unavailable refer to the telephone directory commercial listings or local utility for qualified service assistance 2 Should your problem not be solved to your complete satisfaction you should then contact the Manufacturer s National Service Department at the following address 1241 Carwood Court Montgomery Alabama 36117 Phone 1 866 279 4566 When contacting the manufacturer the following information will be requested a Model and serial number of the water heater as shown on the rating plate attached to the jacket of the heater b Address where the water heater is located and physical location c Name and address of installer and any service agency who performed service on the water heater d Date of original installation and dates any service work was performed e Details of the problems as you can best describe them f List of people with dates who have been contacted regarding your problem2. STATUS HISTORY PRESS TO SELECT ENERGY SAVER HIGH TEMP DISPLAY BEEP INSTANCE MODE CONFIGURE PRESS TO SELECT Press and release the MENU SELECT button to enable the con guration menu Use UP DOWN arrow buttons to scroll through the available con guration settings Press MENU SELECT button to choose the desired menu item See below for further options The MODE menu is used to change the water heater from PERFORMANCE mode to ENERGY SAVER mode Use DOWN arrow to change the mode The CONFIGURE menu is used to change additional settings for the water heater performance and display options Press the DOWN arrow button to scroll through the available settings Press MENU SELECT button to choose the desired con guration option See following sheet for explanation for each con guration setting Note If screen is dimmed press any button and release to brighten the display before performing desired action VERSION INFORMATION Programming the Electronic Control 17 CHANGE CHANGE SCROLL DISPLAY BEEP INSTANCE NO YES PRESS TO SELECT HIGH TEMPERATURE High temperature mode will allow the water temperature to be set above 140 degrees F Press the DOWN arrow to change setting then press SELECT Note If screen is dimmed press any button and release to brighten the display before performing desired action Dis
3. it in operation NOTICE Refer to the Hydrogen Gas Caution in the Operating Instructions Anode Rod This water heater is equipped with an anode rod designed to prolong the life of the glass lined tank The anode rod is slowly consumed thereby eliminating or minimizing corrosion of the glass lined tank Water sometimes contains a high sulfate and or mineral content and together with cathodic protection process can produce a hydrogen sulfide or rotten egg odor in the heated water Chlorination of the water supply should minimize the problem NOTICE Do not remove the anode rod from the water heater s tank except for inspection and or replacement as operation with the anode rod removed will greatly shorten the life of the glass lined tank and will exclude warranty coverage 22 Before You Call For Service Troubleshooting Tips Save time and money Review the chart on this page first and you may not need to call for service CAUTION For your safety DO NOT attempt repair of electrical wiring temperature sensor electronic control heating elements or other safety devices Refer repairs to qualified service personnel Problem Possible Causes What To Do Rumbling noise Water conditions in your home caused a build up of scale or mineral deposits on the heating elements Remove and clean the heating elements Relief valve producing popping noise or draining Pressure build up caused by therma
4. the control board will have to be replaced Please call customer service A110 Lower temperature conversion error If this error is displayed the control board will have to be replaced Please call customer service A111 Upper temperature conversion error If this error is displayed the control board will have to be replaced Please call customer service A500 Control Failure If this error is displayed the control board will have to be replaced Please call customer service Error Codes for Electronic Control ERROR CODES CAUTION For your safety DO NOT attempt repair of electrical wiring temperature sensor electronic control heating elements or other safety devices Refer repairs to qualified service personnel 20 Care and cleaning of the water heater Draining the Water Heater CAUTION Shut off power to the water heater before draining water DANGER Before manually operating the relief valve make certain no one will be exposed to the hot water released by the valve The water drained from the tank may be hot enough to present a scald hazard and should be directed to a suitable drain to prevent injury or damage In order to drain the water heater turn off the cold water supply Open a hot water faucet or lift the handle on the relief valve to admit air to the tank Attach a garden hose to the drain valve on the water heater and direct the stream of water to a drain Open the valve Rout
5. ING THE SCREEN or Lock Icon Note If screen is dimmed press any button and release to brighten the display before performing desired action Press and hold the On O button for 3 seconds to turn the water heater On Reduce Water Temperature Press DOWN arrow until desired temperature is shown on display Increase Water Temperature Press UP arrow until desired temperature is shown on display Press and hold both arrow buttons for 3 seconds to LOCK the control Locking will reduce chance of unintentional changes in water temperature Programming the Electronic Control 15 VACATION SETTING ON VACATION SETTING OFF UNLOCKING THE SCREEN Lock Icon HEATING STATUS SCROLLING DOT When a dot scrolls between the numbers this means that the heating element is on Press and hold both arrow buttons for 3 seconds to UNLOCK the control Note If screen is dimmed press any button and release to brighten the display before performing desired action Press and hold the VACATION button for 3 seconds to place the water heater in vacation mode This mode will reduce the water temperature to save energy during times when hot water is not needed Press and hold the VACATION button for 3 seconds to remove the water heater from vacation mode This will return the temperature setting to the previous set point before initiating vacation mode 16 CONFIGURATION MENU MODE CONFIGURE
6. Water Heaters Electric Residential The purpose of this manual is twofold one to provide the installer with the basic directions and recommendations for the proper installation and adjustment of the water heater and two for the owner operator to explain the features operation safety precautions maintenance and troubleshooting of the water heater This manual also includes a parts list It is imperative that all persons who are expected to install operate or adjust this water heater read the instructions carefully so they may understand how to perform these operations If you do not understand these instructions or any terms within it seek professional advice Any questions regarding the operation maintenance service or warranty of this water heater should be directed to the seller from whom it was purchased If additional information is required refer to the section on If you need service Do not destroy this manual Please read carefully and keep in a safe place for future reference Recognize this symbol as an indication of Important Safety Information California Proposition 65 Warning This product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm with Electronic Control LISTED 786H AP16697 1 10 13 Printed in USA Use amp Care Manual With Installation Instructions for the Installer 2 Care and Cleaning Dr
7. aining 20 Maintenance 20 Extended Shut Down 21 Safety Information Safety Precautions 3 4 Installation Instructions Location 5 Water Connections 6 Electrical Connections 8 Operating Instructions Safety Controls 12 Water Temperature 13 Electronic Control Operation 18 Troubleshooting Tips Before You Call For Service 22 Customer Service Parts List 23 Wiring Diagram 25 If You Need Service 28 FOR YOUR RECORDS Write the model and serial numbers here You can find them on a label on the appliance Staple sales slip or cancelled check here Proof of the original purchase date is needed to obtain service under the warranty Inside you will find many helpful hints on how to use and maintain your water heater properly Just a little preventive care on your part can save you a great deal of time and money over the life of your water heater You ll find many answers to common problems in the Before You Call For Service section If you review our chart of Troubleshooting Tips first you may not need to call for service at all READ THIS MANUAL Your safety and the safety of ot
8. ark Quincy MA 02269 as booklet ANSI NFPA 70 Location Locate the water heater in a clean dry area as near as practical to the area of greatest heated water demand Long un insulated hot water lines can waste energy and water Place the water heater in such a manner that the upper electronic control and the lower access panels can be removed to permit inspection and servicing such as removal of elements or checking controls The water heater and water lines should be protected from freezing temperatures Do not install the water heater in outdoor unprotected areas Make certain the floor underneath the water heater is strong enough to sufficiently support the weight of the water heater once it is filled with water CAUTION The water heater should not be located in an area where leakage of the tank or connections will result in damage to the area adjacent to it or to lower floors of the structure Where such areas cannot be avoided it is recommended that a suitable catch pan adequately drained be installed under the water heater This water heater is supplied with a water detection system It is recommended that the water heater be placed in a suitable catch pan and the water sensor rope be placed inside the catch pan See water sensor section for further information A Diameter of water heater plus 2 min B Maximum 2 NOTICE Auxiliary catch pan MUST conform to local codes Catch Pan Kits are ava
9. d and marked for the purpose on the water heater No valve of any type should be installed between the relief valve and the tank Local codes shall govern the installation of relief valves Relief Valve The BTUH rating of the relief valve must not be less than the input rating of the water heater as indicated on the rating label located on the front of the heater 1 watt 3 412 BTUH Connect the outlet of the relief valve to a suitable open drain so that the discharge water cannot contact live electrical parts or persons and to eliminate potential water damage Piping used should be of a type approved for hot water distribution The discharge line must be no smaller than the outlet of the valve and must pitch downward from the valve to allow complete drainage by gravity of the relief valve and discharge line The end of the discharge line should not be threaded or concealed and should be protected from freezing No valve of any type restriction or reducer coupling should be installed in the discharge line To Fill the Water Heater Make certain the drain valve is completely closed Open the shut off valve in the cold water supply line Open each hot water faucet slowly to allow the air to vent from the water heater and piping A steady flow of water from the hot water faucet s indicates a full water heater WARNING The tank must be full of water before heater is turned on The water heater warranty does not cove
10. eat trap gasket Upper thermostat bracket Heating element Heating element gasket Water Sensor Connector 24 Cavity Insert Instructions The following instructions are intended for qualified service personnel ONLY and should only be done when necessary In order to replace the thermostat or heating element remove the cavity insert crossbar by following the instructions below Turn off the power to the water heater Remove the jacket access panel or electronic control and insulation Rotate the crossbar up and down until it breaks away from the remainder of the cavity insert See illustration to the left Discard the crossbar It cannot and need not be replaced Replace the temperature sensor and or element as necessary Replace the insulation and jacket access panel electronic control before turning on the power to the water heater NOTICE The cavity insert crossbar is necessary for the manufacturing process only The removal of the crossbar will not interfere with the operation of the water heater 25 Wiring Diagram This water heater is wired as indicated in the schematic below Use only a 2 wire power feed with ground connection for this water heater 26 Notes 27 Notes 28 IF YOU NEED SERVICE 1 Should you have any questions about your new water heater or if it requires adjustment repair or routine maintenance it is suggested that you first contact your installer
11. efer to the illustration below for suggested typical installation The installation of unions or flexible copper connectors is recommended on the hot and cold water connections so that the water heater may be easily disconnected for servicing if necessary The HOT and COLD water connections are clearly marked and are 3 4 NPT on all models Install a shut off valve in the cold water line near the water heater Vacuum Relief Valve Not Supplied If required install per local codes and valve manufacturer s instructions To electric distribution panel Heat trap 6 minimum Auxiliary catch pan 2 maximum Drain Valve 6 air gap Relief valve discharge line to suitable open drain Thermal expansion tank if required Heat trap 6 minimum To cold water supply Hot water outlet to fixture Temperature amp Pressure Relief Valve Electronic Control Lower Access Panel Electrical junction box use only copper conductors Shut off valve Anode Union Union EcoNetTM Port 7 WARNING The pressure rating of the relief valve must not exceed 150 PSI the maximum working pressure of the water heater as marked on the rating plate A new combination temperature and pressure relief valve complying with the Standard for Relief Valves and Automatic Gas Shut Off Devices for Hot Water Supply Systems ANSI Z21 22 is supplied and must be installed in the opening provide
12. ensor and temperature limiting control ECO that is located above the upper heating element in contact with the tank surface If for any reason the water temperature becomes excessively high the temperature limiting control ECO breaks the power circuit to the heating element Once the control opens it must be reset manually CAUTION The cause of the high temperature condition must be investigated by qualified service technician and corrective action must be taken before placing the water heater in service again To reset the temperature limiting control Turn off the power to the water heater Remove the electronic control and insulation The thermostat protective cover should not be removed Press the red RESET button Replace the insulation and electronic control before turning on the power to the water heater Reset button Thermostat protective cover WARNING If the water heater has been subjected to flood fire or physical damage turn off power and water to the water heater DO NOT operate the water heater again until it has been thoroughly checked by qualified service personnel 13 Water Temperature Time Temperature Relationship in Scalds Temperature Time To Produce a Serious Burn 120 F More than 5 minutes 125 F 11 2 to 2 minutes 130 F About 30 seconds 135 F About 10 seconds 140 F Less than 5 seconds 145 F Less than 3 seconds 150 F About 11 2
13. g point of use water temperature by mixing hot and cold water in branch water lines Contact a licensed plumber or the local plumbing authority for further information 4 IMPORTANT SAFETY INFORMATION READ ALL INSTRUCTIONS BEFORE USING WARNING For your safety the information in this manual must be followed to minimize the risk of fire or explosion electric shock or to prevent property damage personal injury or loss of life Be sure to read and understand the entire Use and Care Manual before attempting to install or operate this water heater It may save you time and cost Pay particular attention to the Safety Instructions Failure to follow these warnings could result in serious bodily injury or death Should you have problems understanding the instructions in this manual or have any questions STOP and get help from a qualified service technician or the local electric utility FOR INSTALLATIONS IN THE STATE OF CALIFORNIA California Law requires that residential water heaters must be braced anchored or strapped to resist falling or horizontal displacement due to earthquake motions For residential water heaters up to 52 gallon capacity a brochure with generic earthquake bracing instructions can be obtained from Office of the State Architect 400 P Street Sacramento CA 95814 or you may call 916 324 5315 or ask a water heater dealer However applicable local codes shall govern installation For residential water heaters
14. hers are very important There are many important safety messages in this manual and on your appliance Always read and obey all safety messages This is the safety alert symbol Recognize this symbol as an indication of Important Safety Information This symbol alerts you to potential hazards that can kill or hurt you and others All safety messages will follow the safety alert symbol and either the word DANGER WARNING CAUTION or NOTICE These words mean DANGER An imminently hazardous situation that will result in death or serious injury WARNING A potentially hazardous situation that could result in death or serious injury and or damage to property CAUTION A potentially hazardous situation that may result in minor or moderate injury Notice Attention is called to observe a specified procedure or maintain a specific condition READ THE SAFETY INFORMATION 3 Time Temperature Relationship in Scalds Temperature Time To Produce a Serious Burn 120 F More than 5 minutes 125 F 1 to 2 minutes 130 F About 30 seconds 135 F About 10 seconds 140 F Less than 5 seconds 145 F Less than 3 seconds 150 F About 1 seconds 155 F About 1 second Table courtesy of Shriners Burn Institute The chart shown above may be used as a guide in determining the proper water temperature for your home DANGER Households with small children disabled
15. ices can be used to minimize the problem The anode rod should be removed from the water heater s tank annually for inspection and replaced when more than 6 of core wire is exposed at either end of the rod Make sure the cold water supply is turned off before removing anode rod DANGER Before manually operating the relief valve make certain no one will be exposed to the danger of coming in contact with the hot water released by the valve The water may be hot enough to create a scald hazard The water should be released into a suitable drain to prevent injury or property damage NOTICE If the temperature and pressure relief valve on the hot water heater discharges periodically this may be due to thermal expansion in a closed water system Contact the water supplier or your plumbing contractor on how to correct this Do not plug the relief valve outlet 21 Care and cleaning of the water heater Extended Shut Down If the water heater is to remain idle for an extended period of time the power and water to the appliance should be turned off to conserve energy and prevent a build up of dangerous hydrogen gas The water heater and piping should be drained if they might be subjected to freezing temperatures After a long shut down period the water heater s operation and controls should be checked by qualified service personnel Make certain the water heater is completely filled again before placing
16. ilable from the store where the water heater was purchased or any water heater distributor B A To open drain line should be at least 3 4 ID and pitched for proper drainage Inspect Shipment Inspect the water heater for possible damage Check the markings on the rating plate of the water heater to be certain the power supply corresponds to the water heater requirements NOTICE Do not install the water heater in attics where the temperature may exceed 150 F 6 Installing the water heater Typical Installation Thermal Expansion Determine if a check valve exists in the inlet water line Check with your local water utility It may have been installed in the cold water line as a separate back flow preventer or it may be part of a pressure reducing valve water meter or water softener A check valve located in the cold water inlet line can cause what is referred to as a closed water system A cold water inlet line with no check valve or back flow prevention device is referred to as an open water system As water is heated it expands in volume and creates an increase in the pressure within the water system This action is referred to as thermal expansion In an open water system expanding water which exceeds the capacity of the water heater flows back into the city main where the pressure is easily dissipated A closed water system however prevents the expanding water from flowing back i
17. ine Preventative Maintenance Properly maintained your water heater will provide years of dependable trouble free service It is suggested that a routine preventive maintenance program be established and followed by the user It is further recommended that a periodic inspection of the operating controls heating element and wiring should be made by service personnel qualified in electric appliance repair Most electrical appliances even when new make some sound when in operation If the hissing or singing sound level increases excessively the electric heating element may require cleaning Contact a qualified installer or plumbing contract to inspect At least once a year lift and release the lever handle on the temperature pressure relief valve located near the top of the water heater to make certain the valve operates freely Allow several gallons to flush through the discharge line to an open drain A water heater s tank can act as a setting basin for solids suspended in the water It is therefore not uncommon for hard water deposits to accumulate in the bottom of the tank It is suggested that a few quarts of water be drained from the water heater s tank every month to clean the tank of these deposits Rapid closing of faucets or solenoid valves in automatic water using appliances can cause a banging noise heard in a water pipe Strategically located risers in the water pipe system or water hammer arresting dev
18. ircuit breaker of proper size Electrical connections tight and unit properly grounded E Water Sensor Water heater in catch pan Water sensor rope connected to heater Water sensor rope inside catch pan and secured with clip 12 Safety Precautions Do turn off power to water heater if it has been subjected to over heating fire flood physical damage Do Not turn on water heater unless it is filled with water Do Not turn on water heater if cold water supply shut off valve is closed If there is any difficulty in understanding or following the Operating Instructions or the Care and Cleaning section it is recommended that a qualified person or serviceman perform the work Operating the water heater CAUTION Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a long period of time generally two weeks or more HYDROGEN GAS IS EXTREMELY FLAMMABLE To dissipate such gas and to reduce risk of injury it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system If hydrogen is present there will be an unusual sound such as air escaping through the pipe as the water begins to flow Do not smoke or use an open flame near the faucet at the time it is open Safety Controls The water heater is equipped with a temperature s
19. l expansion in a closed system This is an unacceptable condition and must be corrected Contact the water supplier or plumbing contractor on how to correct this Do not plug the relief valve outlet Rattling noise during periods of water usage Internal heat trap fittings in operation This is normal for heat trap fittings when in operation and does not indicate a need for service Not enough or no hot water Water usage may have exceeded the capacity of the water heater Wait for the water heater to recover after an abnormal demand A fuse is blown or a circuit breaker tripped Replace fuse or reset circuit breaker Electric supply may be off Make sure electric supply to water heater and disconnect switch if used are in the ON position The thermostat may be set set too low See the Temperature regulation of the water heater sec tion of this manual Leaking or open hot water faucets Make sure all faucets are closed Electric service to your home may be interrupted Contact the local electric utility Improper wiring See the Installing the water heater section of this manual Manual reset limit ECO See the Temperature regulation of the water heater sec tion of this manual Cold water inlet temperature may be colder during the winter months This is normal The colder inlet water takes longer to heat Water is too h
20. nto the main supply line and the result of thermal expansion can create a rapid and dangerous pressure increase in the water heater and system piping This rapid pressure increase can quickly reach the safety setting of the relief valve causing it to operate during each heating cycle Thermal expansion and the resulting rapid and repeated expansion and contraction of components in the water heater and piping system can cause premature failure of the relief valve and possibly the heater itself Replacing the relief valve will not correct the problem The suggested method of controlling thermal expansion is to install an expansion tank in the cold water line between the water heater and the check valve refer to the illustration below The expansion tank is designed with an air cushion built in that compresses as the system pressure increases thereby relieving the over pressure condition and eliminating the repeated operation of the relief valve Other methods of controlling thermal expansion are also available Contact your installing contractor water supplier or plumbing inspector for additional information regarding this subject NOTICE Do not apply heat to the HOT or COLD water connections If sweat connections are used sweat tubing to adapter before fitting adapter to the water connections on heater Any heat applied to the water supply fittings will permanently damage the dip tube and or heat traps Water Supply Connections R
21. of a capacity greater than 52 gallons consult the local building jurisdiction for acceptable bracing procedures READ AND FOLLOW THIS SAFETY INFORMATION CAREFULLY SAVE THESE INSTRUCTIONS Have the installer show you the location of the circuit breaker and how to shut it off if necessary Turn off the circuit breaker if the water heater has been subjected to overheating fire flood physical damage or if the ECO fails to shut off Read this manual entirely before installing or operating the water heater Use this appliance only for its intended purpose as described in this Use and Care Manual Be sure your appliance is properly installed in accordance with local codes and the provided installation instructions DO NOT attempt to repair or replace any part of your water heater unless it is specifically recommended in this manual All other servicing should be referred to a qualified technician SAFETY PRECAUTIONS 5 Installing the water heater The location chosen for the water heater must take into consideration the following Local Installation Regulations This water heater must be installed in accordance with these instructions local codes utility codes utility company requirements or in the absence of local codes the latest edition of the National Electrical Code It is available from some local libraries or can be purchased from the National Fire Protection Association Batterymarch P
22. or elderly persons may require a 120 F or lower thermostat setting to prevent contact with HOT water The temperature of the water in the heater is regulated by the electronic control and surface mounted temperature sensors To comply with safety regulations the electronic control was programmed with a 120 F set point at the factory DO NOT attempt to set the temperature by removing the electronic control or lower access panel See the electronic control operation section of this manual DANGER Hotter water increases the potential for Hot Water SCALDS D A N G E R HOT Water temperature over 125 F can cause severe burns instantly or death from scalds Children disabled and elderly are at highest risk of being scalded See instruction manual before setting temperature at water heater Feel water before bathing or showering Temperature limiting valves are available see manual BURN IMPORTANT SAFETY INFORMATION READ ALL INSTRUCTIONS BEFORE USING DANGER WATER TEMPERATURE SETTING Safety and energy conservation are factors to be considered when selecting the water temperature setting of water heater s thermostat Water temperatures above 125 F can cause severe burns or death from scalding Be sure to read and follow the warnings outlined on the label pictured below This label is also located on the water heater near the thermostat access panel NOTICE Mixing valves are available for reducin
23. ot The thermostat is set too high See the Temperature regulation of the water heater sec tion of this manual Cannot set above 140 F Electronic control high temp configuration set to NO See configuration menu section on programming the electronic control 23 Replacement Parts For 20 120 gallon models with single and double elements Instructions For Placing a Parts Order Address parts orders to the distributor or store where the heater was purchased All parts orders should include The model and serial number of the water heater from the rating plate Specify voltage and wattage as marked on the rating plate Part description as noted below and number of parts desired CAUTION For your safety DO NOT attempt repair of electrical wiring thermostat s heating elements or other operating controls Refer repairs to qualified service personnel TURNOFF POWER BEFORE SERVICING Some models may have been supplied with External heat traps in lieu of Internal heat traps Electronic Control Cavity insulation Upper thermostat protective cover ECO with upper sensor Jacket access panel Thermostat bracket Drain valve Lower sensor Heating Element Heating element gasket Plate cover Junction box cover Anode rod Dip tube gasket Dip tube internal heat trap Temperature amp Pressure Relief Valve Internal heat trap Internal h
24. play mode is used to change the temperature displayed from Fahrenheit to Celsius Press either UP or DOWN arrow to change Beep mode is use to turn all the audible alarms on and o Press either UP or DOWN arrow to change In this mode error alarms and water sensor detection alarms will not occur Instance number is used to identify the water heater if additional water heaters or devices are connected to a joint home control system The number may be changed from 1 to 16 to identify this water heater 18 Programming the Electronic Control HEAT UPPER TEMP LOWER TEMP SCROLL PRESS TO SELECT STATUS HISTORY Use DOWN arrow to scroll through the menu Press MENU SELECT button to activate menu item HEAT will display if an element is on or o Choosing UPPER or LOWER TEMP will display the current temperature reading for that sensor History menu lists the 10 most recent error codes Use the DOWN arrow to scroll the codes ERROR DISPLAY ERROR SYMBOL History menu lists the 10 most recent error codes Press the BACK STATUS button to show the most recent error code Use the DOWN arrow to scroll the codes See following sheet for all error codes scrolling messages and recommended action Note If screen is dimmed press any button and release to brighten the display before performing desired action 19 CODE SCROLLING MESSAGE DESCRIPTION ACTION A100 Lowe
25. r damage or failure resulting from operation with an empty or partially empty tank Condensation Condensation can form on the tank when it is first filled with water Condensation might also occur with a heavy water draw and very cold inlet water temperature This condition is not unusual and will disappear after the water becomes heated If however the condensation continues examine the piping and fittings for possible leaks EcoNetTM Communication Port EcoNetTM Communication port is for future integration with home automation energy management and demand response systems 8 Installing the water heater NOTICE This guide recommends minimum branch circuit sizing and wire size based on National Electric Code Refer to wiring diagrams in this manual for field wiring connections Branch Circuit Sizing and Wire Size Guide CAUTION The presence of water in the piping and water heater does not provide sufficient conduction for a ground Non metallic piping dielectric unions flexible connectors etc can cause the water heater to be electrically isolated Electrical Connections A separate branch circuit with copper conductors overcurrent protective device and suitable disconnecting means must be provided by a qualified electrician All wiring must conform to local codes or latest edition of National Electrical Code ANSI NFPA 70 The water heater is completely wired to the junction box inside jacket at
26. r temperature thermistor failure Electronic control has detected lower temperature sensor is bad The problem could be the sensor wiring or the control board Please call for service A101 Upper temperature thermistor failure Electronic control has detected upper temperature sensor is bad The problem could be the sensor wiring or the control board Please call for service A102 Water sensor alarm Electronic control has detected water in the drain pan Check the pan for water If there is no water present disconnect the sensor dry and reinstall it to reset the error A103 Fill tank with water Electronic control has detected no water in the tank Please fill the tank with water and recycle power A104 Emergency cut off alarm Electronic control has detected high temperature electrical cut out device ECO has been activated Reset ECO or call for service A105 Lower element error Electronic control has detected an error with the lower element or associated wiring and connections Please call for service A106 Upper element error Electronic control has detected an error with the upper element or associated wiring and connections Please call for service A107 Element wire routing error Call for service A108 Lower element relay stuck on error If this error is displayed the control board will have to be replaced Please call customer service A109 Upper element relay stuck on error If this error is displayed
27. rangement Typical horizontal piping arrangement Hot and Cold Pipe Insulation Installation Insulation blankets available to the general public for external use on electric water heaters are not necessary The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank heaters This water heater meets or exceeds the National Appliance Energy Conservation Act standards with respect to insulation and standby loss requirements making an insulation blanket unnecessary The manufacturer s warranty does not cover any damage or defect caused by installation attachment or use of any type of energy saving or other unapproved devices other than those authorized by the manufacturer into onto or in conjunction with the water heater The use of unauthorized energy saving devices may shorten the life of the water heater and may endanger life and property The manufacturer disclaims any responsibility for such loss or injury resulting from the use of such unauthorized devices CAUTION If local codes require the application of an external insulation blanket to this water heater pay careful attention to the following so as not to restrict the proper function and operation of the water heater Do not cover the operating or warning labels attached to the water heater or attempt to relocate them on the exterior of insulation blanket Do not apply insulation to the top of the water hea
28. seconds 155 F About 1 second Table courtesy of Shriners Burn Institute DANGER There is a hot water scald potential if the thermostat is set too high Households with small children disabled or elderly persons may require a 120 F or lower thermostat setting to prevent contact with HOT water Water Temperature Set Point Safety and energy conservation are factors to be considered when selecting the water temperature setting of the water heater s thermostat s The lower the temperature setting the greater the savings in energy and operating costs To comply with safety regulations the electronic control is factory programmed at 120 F or less where local codes require This is the recommended starting point Water temperatures above 125 F can cause severe burns or death from scalding Be sure to read and follow the warnings outlined in this manual and on the label on the water heater This label is located on the water heater above the lower access panel Mixing valves for reducing point of use water temperature by mixing hot and cold water in branch water lines are available Contact a licensed plumber or the local plumbing authority for further information The electronic control allows the water temperature to be set from 110 F to 150 F The chart below may be used as a guide in determining the proper water temperature for your home 14 POWERING ON WATER HEATER SETTING WATER TEMPERATURE LOCK
29. supply fittings will permanently damage the dip tube and or heat traps Water Sensor In order to detect the presence of unwanted water this water heater is supplied with a built in water sensing circuit The water sensor rope is shipped in the warranty bag for field installation Remove water sensor rope from the bag and attach to the connector located near the lower access panel Place the rope in the recommended catch pan and secure to the pan bottom with provided self adhesive clips When water is detected the electronic control will turn off the heating elements flash the display backlight and turn on an audible alarm Water Sensor Rope Attachment Point Clips Catch Pan 11 Installation Checklist A Water Heater Location B Water Supply C Relief Valve D Wiring Close to area of heated water demand Indoors and protected from freezing temperatures Area free of flammable vapors Provisions made to protect area from water damage Sufficient room to service heater Water heater completely filled with water Air purged from water heater and piping Water connections tight and free of leaks Temperature and Pressure Relief Valve properly installed and discharge line run to open drain Discharge line protected from freezing Power Supply voltage agrees with water heater rating plate Branch circuit wire and fusing or c
30. ter This could interfere with the safe operation of the electrical junction box Do not cover the jacket access panel s to the thermostat s and heating element s or pressure and temperature relief valve Inspect the insulation blanket frequently WARNING If local codes require external application of insulation blanket kits the manufacturer s instructions included with the kit must be carefully followed Insulation Blankets 10 Installing the water heater For increased energy efficiency some water heaters have been supplied with a 2 3 8 section of pipe insulation Please install the insulation according to the illustrations above that best meets your requirements Slip the insulation cover over the T amp P Valve through the center hole and align the hole in the side with the opening of the T amp P Valve Typical top connection arrangement Typical side connection arrangement Relief Valve Insulation Installation CAUTION Ensure the T amp P Valve opening is not obstructed by the insulation Heat Trap For increased energy efficiency some water heaters have been supplied with factory installed internal or external heat traps in the hot outlet and cold water inlet openings NOTICE Do not apply heat to the HOT or COLD water connections If sweat connections are used sweat tubing to adapter before fitting adapter to the water connections on heater Any heat applied to the water
31. the top front of the water heater An opening for 1 2 or 3 4 electrical fitting is provided for field wiring connections The voltage requirements and wattage load for the water heater are specified on the rating plate on the front of the water heater The branch circuit wiring should include either Metallic conduit or metallic sheathed cable approved for use as a grounding conductor and installed with fittings approved for the purpose Non metallic sheathed cable metallic conduit or metallic sheathed cable not approved for use as a ground conductor shall include a separate conductor for grounding It should be attached to the ground terminals of the water heater and the electrical distribution box Water heater junction box WARNING WARNING Junction box cover Wire connections Ground screw Conduit connector Single Phase Wiring Total Water Heater Wattage Recommended Over Current Protection fuse or circuit breaker amperage rating Copper Wire Size AWG Based on N E C Table 310 16 75oC 208V 240V 208V 240V 3 000 20 20 12 12 4 000 25 25 10 10 4 500 30 25 10 10 5 000 30 30 10 10 5 500 35 30 8 10 9 For increased energy efficiency some water heaters have been supplied with two 24 sections of pipe insulation Please install the insulation according to the illustrations above that best meets your requirements Typical vertical piping ar
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