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COMMERCIAL ELECTRIC WATER HEATERS

1. 30 31 MAINTENANCE EE 31 EE ic BE 31 32 lI l e uuu 2 a asa o sssmasssmasasshassssas 32 Sediment Removal 32 Water and Lime Scale Removal 32 33 TROUBLESHOOTING CHECKLIST 34 Not Enough or INO Water eege 34 Water Heater Makes Strange Sounds 34 H You Cannot Identify or Correct the Source of Malfunction 17 Leakage Checkpoints 35 PIPING DIAGRAMS uu uu seed gedegEegeegehg eg een 36 47 MANIFOLD DIAGHRAMG a ara rrsssss sa 48 WARRANTY EE 51 NV LROL 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 AHRI Air Condition Heating and Refrigeration Institute ANSI American National Standards Institute ASME American Society of Mechanical Engineers NEC National Electrical Code NFPA National Fire Protection Association UL Underwriters Laboratory PREPARING FOR THE INSTALLATION A WARNING e Before removing any access panels or servicing the water heater make sure the electrical supply to the water heater is turned OFF e Failure to do this could result in death serious bodily injury or property damage 1 Read the
2. NI Oy O17 OG RO 27 NIN ow O O1 G gt Cy Oo OO NINI a Al olol S o N e S S ce N j o Figured at 1 KW 3413 Btu 4 1 gallons at 100 F temperature rise To determine recovery rate per minute divide recovery rate per hour by 60 Table 2 5 APPRC lie Di UL A CERTIFIED Low Lead Content WATER QUALITY All models meet All models are listed National Sanitation by Underwriters Foundation NSF 5 Laboratories Inc requirements COMMERCIAL STORAGE S R TANK WATER HEATER LISTED 22U1 Low Lead Content MODEL NUMBER SERIAL NUMBER ITEM ID PART NUMBER No OF WATTS WATTS PHASE VOLTS AC ELEMENTS EACH TOTAL CAPACITY US GAL STANDBY LOSS MAX WORKING RATED MEASURED WATTS PRESSURE AN L JIVIFONEN p gt A ELECTRONIC CONTROL MODELS WATER OUTLET UIM USER INTERFACE MODULE T amp P VALVE ON FRONT CABINET POWER DISTRIBUTION 120V CONTROL CIRCUIT BLOCK TRANSFORMER 24V TRANSFORMER CCB behind fuse block Central Control Board CONTROL CIRCUIT FUSE BLOCK IMMERSION TEMPERATURE PROBE also contains ECO high temp limit switch POWER CIRCUIT FUSE BLOCKS 2 per bank of heating elements HEATING ELEMENTS 3 BANK 3 Upper Bank CONTACTORS 2 per bank of heating elements HEATING ELEMENTS 3 BANK 2 Middle Bank ASME PLATE IF APPLICABLE HEATING ELEMENTS 3 BANK 1 Lower Bank WATER INLET DRAIN F
3. Press the Operational Button underneath CHANGE to activate the Sun Normal All Day adjustment mode for the Setpoint Adjustment value Mon Normal All Day Tue Normal All Day Wed Normal All Day CHANGE BACK Use the Up Down buttons to change the Setpoint Adjustment to the desired value The Setpoint Adjustment value is adjustable from 2 F to 50 F The factory default is 20 F Economy Mode Setup Setpoint Adjustment 20 C Ti Wed 4 19 PM Notice how the text above the Operational Buttons on the display changes sakinka E Mode to UPDATE amp CANCEL when the adjustment mode is activated and how Sun Normal All Day the current value is outlined rather than highlighted in black Mon Normal All Day Tue Normal All Day Press the Operational Button underneath UPDATE to enter and confirm Wed Normal All Day the new value Pressing the Operational Button underneath CANCEL would discard the new value and retain the previous value Economy Mode Setup Setpoint Adjustment Current Time The new Setpoint Adjustment value should now be displayed as the Heater In Economy Mode current value Sun Normal All Day Mon Normal All Day Tue Normal All Day Wed Normal All Day CHANGE BACK 26 ECONOMY MODE SETTINGS Time Clock Settings ACTION DISPLAY From the Desktop Screen navigate to the Economy Mode Setup menu Use the Up Down buttons to select highlight in black Current Time sub menu Press the Operati
4. Tue Normal All Day Wed Normal All Day CHANGE BACK Normal Operation Between Normal Operation All Day Economy Mode All Day ei Normal Operation Between Start 700 PM From the Economy Mode Setup menu use the Up Down and CHANGE Stop 8 00 PM buttons to enter the Mon sub menu ACCEPT CANCEL Use the Up Down buttons to select highlight in black the Normal Operation Between setting Press the Operational Button underneath SELECT to change the operating mode for Monday to Normal Operation Between Note that when this setting is selected Start and Stop time user settings appear on the display Use the Up Down buttons to navigate between the Start and Stop time Hour Minutes and AM PM settings Monday Normal Operation All Day Economy Mode All Day Normal Operation Between Start 7 30 Stop 8 00 PM With each item selected press the Operational Button underneath SELECT Sending Updates to CCB to activate the adjustment mode for each setting Use the Up Down buttons CHANGE BACK to change the value to the desired setting Press the Operational Button underneath ACCEPT to enter the new setting or CANCEL to discard the new setting and retain the previous setting Setpoint Adjustment 20 Press the Operational Button underneath BACK to confirm the settings Current Time Mon 5 00 PM and update the control system You will be returned to the Economy Mode Heater In Economy Mode N
5. Current Time Weekday Monday Time 4 19 PM ACCEPT CANCEL Current Time Weekday Monday de Time EOE CHANGE Economy Mode Setup Setpoint Adjustment Current Time Heater In Economy Mode Sun Normal All Day Mon Normal All Day Tue Normal All Day Wed Normal All Day CHANGE BACK ECONOMY MODE SETTINGS Daily Operating Mode Settings ACTION DISPLAY Economy Mode Setup Setpoint Adjustment Economy Mode All Day SE From the Economy Mode Setup menu use the Up Down buttons to select deele Ba ale Sun Normal All Day highlight in black the Daily sub menu for Sun Press the Operational Mon Normal All Day Button underneath CHANGE to enter this menu Tue Normal All Day Wed Normal All Day CHANGE BACK Normal Operation All Day OJ Economy Mode All Day Normal Operation Between Sending Updates to CCB Use the Up Down buttons to select highlight in black the Economy Mode All Day setting Press the Operational Button underneath SELECT to change from the SELECT factory default Normal Operation All Day setting to the Economy Mode All Day setting Economy Mode Setup Press the Operational Button underneath BACK to confirm the new setting Setpoint Adjustment and update the control system You will be returned to the Economy Mode Current Time Setup menu The new setting should now be displayed for Sun enter In Economy Mous Sun Economy Mode All Day Mon Normal All Day
6. id pue oaimpioduai oul Z wesBeip Buidid powajaig SALON NIVud N3dO Nivud N3dO NIvud N3dO Ol d91 Adid Ol d 1 Jdid Se Ol d91 Jdid Se MI e HOLIMS LOANNOOSIC LOANNOOSIC LOANNOOSIC qasna qasna qasna A SayNLXlsa OL A7 LOH SLINAWSYINOAY WNOILIGGV HOS SAONVNIGHO ANY SACO9O TVOO 1 HLIM SCH S3OIA3d YSHLO ANY NOILVYNSISANOO ONI did GALSADONS SMOHS ONIMVHYC SIHL ONINYVM SLINN DIM LOSI WIDYAWINOD 42 SALV A1ddNS dv OO NHDULZN YALVM LOH HOLIMS AO Td d31VA 3SVS 201 11Ve1ddlNd1 Hillia SATA MOSHO DON 3ATVA Tvd LYOd TINA Q En FE ANVIL NOISNVdX4 eg LL oljuoo SiN esedwe yue y uey 1 uBiu d s B p S a pinous 1e souui u Bunei do s i e u 1942M OU e S yue ofpios y pue s 1i 1e u J9 EM oU u wq q dund y olluo2 pue o Dal 9q pinous O1 UOD Inzes dw yue SUL r aBesn Ja U9AOB jeus s poo e5o ABMOH lun BuI9 A19S JO UAOUS Be SBAJCA 9 AJ9S E uu s s oun u Ju uoduuoo Aue Jo Buljes inss id p o5x JOU jjeys Bu1 8 s AJLA Joo nss id pue aimpioduat oul Z wesBeip Buidid paajaig SALON Pe YOO 14s GdHSINId NIVad N3dO OL dL 3dld NIVad N3dO OL d8L Adlid NIVad N3dO Ol d8L Adlid LOANNOOSIG qasna LOANNOOSIG qasna LOANNOOSIG qasna STORAGE TANK S3qd n1XId OL XK YAlVM LOH ee A
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8. Adjustment 20 Current Time Mon 5 00 PM Heater In Economy Mode No Sun Economy Mode All Day Mon Normal 7 30 AM to 8 00 PM ue T Wed CHANGE Setpoint Adjustment Adjustable user setting 2 F to 50 F factory default is 20 F the control system uses to calculate the Economy Set Point The Economy Set Point normal Operating Set Point minus the programmed Setpoint Adjustment value The Economy Set Point is the water temperature the control system maintains during programmed Economy Mode time periods Economy Set Point is displayed instead of Operating Set Point and Economy Mode appears beneath the current time on the Desktop Screen during Economy Mode time periods Normal All Day Normal All Day BACK q Ab Current Time Seven Day 24 hr clock Use this menu item to set the current time and day of the week Current day and time are not set from the factory Clock Not Set will be displayed on the Desktop until the time day has been initially set Heater In Economy Mode Displays whether the control system is currently operating in Economy Mode or not Daily Operating Mode Sun Mon Tue Wed Thu Fri Sat Seven daily sub menus are listed at the bottom of the Economy Mode Setup menu There are 3 Operating Modes in each sub menu Normal Operation All Day Economy Mode All Day and Normal Normal Operation Between When this operating mode is active Operation Between On
9. CCB J7 socket to enable heating operation when external controls are not in use Service Note If a supervisory control s is used to enable disable heating operation install field wiring between the J7 socket on the CCB and a set of dry contacts on the external control per all applicable building codes This is a switching circuit only DO NOT apply any external voltage or connect any load IE relay coil to either circuit Element Bank On Displays the on off status of each Bank of heating elements Yes On No Off 25 Alarm Condition Displays the status of the user definable Alarm Output function see Alarm Output Setup Menu Yes alarm condition has been met No alarm condition has not been met Alarm Relay Output Displays the state of the normally open contacts of the Alarm Output relay This relay J3 contacts on the CCB is used for building EMS Energy Management System notification of operational conditions such as Fault conditions ECONOMY MODE SETUP MENU This menu contains settings used to establish an Economy Set Point and Economy Mode operating periods This control system feature can help reduce operating costs during unoccupied low load or peak demand periods Desktop Screen During Economy Mode MODEL INFORMATION Tank Temperature Economy Set Point Status Standby 120 F 100 F Friday 5 00 PM Economy Mode Economy Mode Setup Menu Economy Mode Setup Setpoint
10. IWIDYSWINOD 45 SALY O4JUOD SuNnjesodwse yue y uey JaUBIy 4 s 16 p s q pinous Je souuj u Bunei do s 19 e u J9 EM SUL S s yue Be1ols y pue s i 91e u 1 1eA y UBEMjeq dund y ojluo2 pue o Dal 9q pinoys jojluooS Sunjesodwe yue oul r obpen Ja UJ AO jeys SAPO e5o AMOH HUN BuISIAJ9 9S 10 UMOUS S AJLA BODIAIOS E uu s s y Ul ju uoduuoo Aug Jo Hues nss id p 2ox zou eys Dumas AeA Lola nss id pue sinyesodw9 oul e wesBeip Buldid Dauaiaid L SALON YOO 14 ANVL G3HSINI3 SEENEN NOISNVdX3 A dd yJ LYM G109 ees NOILOANNOO u31VM Z NIVad N3dO Ol d91 Adid NIVYd NAdO Ol d81L Adid Niva NadO Ol d 1 Adid NIVad NadO Ol dl Adid STORAGE TANK LOANNOOSIG LOANNOOSIG LOANNOOSIG LOANNOOSIG E qasn4 qasna qasn4 qasn4 NYnlayY YSLVM LOH i SSYNLXI4 OL Be YSLVM LOH Nivud HOLIMS Modi T TOMLNOD SYNLWYAdWAL NYL SINAWSYINOSY IWNOILIGGV YOS J39Y9 SFYNLVYSdWSL E dWNd 9NILYINOYHIO SAONVNIGHO ANY S3J3GOO9 TVOO 1 HLIM MOSAHO S3OIA3Gd YSHLO GNV NOILVYENDIANOO ON did GQALSADONS SMOHS ONIMVHYC SIHL ONINYVM auch MO3HO DON AAIWA 4413H Q IN4941 MNVL 3SV3OL1S WOILYSA HLIM SLINN t RL1O313 1VIS9333INNOOS 2 3ATVA 22174 JHNSSJHd a 46 OJJUOD SuNyesodwes yue y uey 1 yf y d s 16 p 1 s q pinous 1e souusu Huljesedo s 191e u J9 EM SUL G s
11. LCD backlight remains illuminated after a key has been pressed Available settings are Always Off 10 30 or 60 seconds and Always On Contrast Adjustable user setting to adjust the UIM s LCD screen contrast between text and background Display Settings Changing the user settings in this menu is done using the same methods for changing the Operating Set Point Service Note Adjustable user settings in the Display Settings menu are unaffected by Restore Factory Defaults HEATER INFORMATION MENU This menu displays non adjustable operational information Heater Information Elapsed Time 7 days 18 hrs 35 mins Total Heating Time 2 days 46 mins 00000042 00000035 Cycle Count Bank 1 Cycles Bank 1 On Time d Abd TOP OF MENU Heater Information Bank 2 On Time 1 day 4hrs 44 mins Bank 3 Cycles 00000025 Bank 3 On Time 8 hrs 30 mins 0 00 0 00 CCB Version UIM Version 42 _ BOTTOM OF MENU Elapsed Time Total accumulated time the control system water heater has been energized Total Heating Time Total accumulated time the control system has been in the heating mode IE any heating elements have been energized Bank Cycles Total accumulated count of heating cycles for each Bank of heating elements Bank On Time Total accumulated heating on time for each Bank of heating elements CCB Version Software version for Central Control Board UIM Version Software version for Us
12. LYOd TINA AAWA salad Q AYNSSsadd 8 JHNLYHYJdNWAL IN39341 SLN3INd3dI Od IWNOILIGGV YOS SAONVNIGHO ANY SACO9 TVOO 1 HLIM MOAHO S3OIA3d YSHLO ANY NOILVYNSISANOO ONIdid QALSADONS SMOHS ONIMVA SIHL ONINYVM ANYL JDVYOLS WLNOZINOH HLIM SLINN SINLOA1 IWIDSYAIWINODS So OD DA 44 SALV A TddNS YALVM OO Nanay YALVM LOH HOLIMS AO Y3 LYM TTT 3SVS AYNIWeAdNAL SATA MOSHO ON 3ATVA TIVE LHYOd III Q A E YNYL NOISNVdX3 S NIVYd N3dO Ol d8L Adid adi HOLIMS LOANNOOSIG O qasna NIVad TOYLNOS AeNLVesadNal MNYL dNNd ONILVINOYIO 3ATVA saclay adNSsSadd 3ATVA dal 1331 Jade 8 AYNLVYAdNAL IN3941 oe e Oo H Ol d91 Jdid Ol d91 Jdid OL d Jdid 4 a MI a MI a N HOLIMS HOLIMS HOLIMS LOANNOOSIC LOANNOOSIC LOANNOOSIC abesn 11y uj AoB jeys s poo e5o JA MOH YUN HUIDIAJOS JOJ UMOUS Be SALA 9I AJ9S E Wa SAS y u Ju uoduuoo Aue Jo Huel nss id p 25x zou eus Hues SAJeA Jaljas nss id pue sinjesodws9 sy Z wesBeip Buldid pauajaig SALON NIVYdC NadO NIVYC NadO NIVYd N3dO qas na qasna ra SSaynNLXlsa OL YALVM LOH aasNd SLINAWSYINOAY IYNOILIAAY HOS SSAONVNIGHYO ANY SACO90 TVOO 1 HLIM MH S3OIA3dq YSHLO CNV NOLLVYNSIANOO ONI did GALSSADONS SMOHS ONIMVAC SIHL ONINYVM SLINN t R L92313
13. NIC TOYLNOS AeNLVYAdNSL MNVL SLINAWSYINOAY IWNOILIGGV HOS dINNd ONILVINONID SSAONVNIGHO ANY S3GOO9 TVOO 1 HLIM MOSHO S3OIA3d YSHLO ANY NOILVYNDISANOO ONIdid GQALSASONS SMOHS ONIMVHEC SIHL ONINYVM 3ATVA dal Tay JHNSSJHd 3ATVA 2211 JYNSS3AYd 9 SYNLVYSdNSL YNYL SDVYOLS IWOILYSA HLIM SLINN DINLOAIA IWIDMSINNOD mi e o H IN4941 43 RAL YNVL fs NOISNWdX4 A dd d I YALVM qQ1OO Space NYNLaY YALVM LOH Bez NOILVOO7 x AIVNYSALIV N IDa SayNLxXla OL OJJUOD nzyeJ dw yue y uey 1 yfiy d s 1b p jes q pinous Je souuij u Dungiado s 134294 197eM OU SG S yue aHes0 S y pue s 19 e u Jo1gw oU UBEMjeq dund oun 01 U09 pue o Dal q p nous ojjuooO siN eJodwe yue Su Besn 114 UJ AO eus SAPO e20 JA MOH YUN HUIDIA S 10 UMOUS BJ S AJLA BDIAIOS E uu s s y Ul J u uoduuoo Aue Jo Bunes nss id p 5Sx zou eys Dumas AJLA J I 1 nss id pue oaimgaduai sul e wesBeip Buidid powajalg SALON re eT Ems YOO 14 G3AHSINIS NIVad N3dO Ol d 1 Adid a A HOLIMS LOANNOOSIG OST NIVad N3dO Ol dSl Adid NIVad N JdO Ol d8L Adid LOANNOOSIC qgasna LOANNOOSIC qgasna YALVM LOH ka u NIVad HOLIMS AO 1d dd31VA JOYLNOD JYNLVYSdWAL MNV L AOVS AYNLIVYAdWAL dNNd SNI 1V IO me 3ATVA SOU 3ATVA dal Tay 34r1SS3dd 3ATVA TIVE
14. OPERATION section of this manual The principal components of the heater are identified in the Features and Components illustrations on pages 6 and 7 Water temperature over 125 F 52 C can cause severe burns instantly resulting in severe injury or death Children the elderly and the physically or mentally disabled are at highest risk for scald injury A DANGER Feel water before bathing or showering Temperature limiting devices such as mixing valves must be installed when required by codes and to ensure safe temperatures at fixtures MIXING VALVE USAGE Water heaters are intended to produce hot water Water heated to a temperature which will satisfy space heating clothes washing dish washing cleaning 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 These include the elderly children the infirm or physically developmentally disabled If anyone using hot water in your home fits into one of these groups or if there is a local code or state law requiring a maximum water temperature at the hot water tap then you must take special precautions In addition to using the lowest possible temperature setting that satisfies your hot water needs a means such as a MIXING VALVE should be used at the hot water taps used by these people or at the water heater MIXING VALVES for reducing point of use temperature are availabl
15. User adjustable setting 5 F to 5 F range factory default is O F If the current Tank Temperature is sensed from the immersion Temperature Probe at 120 F and the offset is adjusted to 5 F the control system would calibrate or offset the Tank Temperature to 115 F Heating cycles would then start stop based on the calibrated Tank Temperature Used to calibrate for slight differences in control system temperature sensing This can improve the precision of temperature control in the storage tank and at points of use This feature can also be used to compensate for building recirculation loops hot water returning to the storage tank that may cause the heating cycle to terminate prematurely TEMPERATURE SETTINGS The Operating Set Point and the Differential Settings are adjusted 5 S in the Temperatures Menu The following instructions explain how to SE SE adjust these user settings and navigate the control system menus ACTION DISPLAY MODEL INFORMATION Tank Temperature Operating Set Point Status Standby Notice how the text above the Operational Buttons on the display changes Friday as you navigate through the various menus and screens 5 00 PM Normal Mode DIFFERENTIAL TURNON TURN OFF BANK NUMBER SETTING TEMP TEMP 120 F 120 F From the Desktop Screen press the Operational Button underneath MENU to enter the Main Menu Main Menu Heater Status Economy Mode Setup Alarm Output Setup Displ
16. from the heating elements only that there is a call for heat present and the control system has initiated heating operation Heating elements icon for a water heater equipped with 1 Bank of heating elements Each circle represents one heating element Each diagonal row of 3 elements 1 Bank of elements Open circles represent heating elements the control system has not energized and is not sensing electrical current from Heating elements icon for a water heater equipped with 2 Banks of heating elements Each circle represents one x OO heating element Each diagonal row of 3 elements 1 Bank of elements Open circles represent heating elements OO the control system has not energized and is not sensing electrical current from OO O Heating elements icon for a water heater equipped with 3 Banks of heating elements Each circle represents one OO O heating element Each diagonal row of 3 elements 1 Bank of elements Open circles represent heating elements OO O the control system has not energized and is not sensing electrical current from Heating elements icon for a water heater equipped with 3 Banks of heating elements Each circle represents one heating element Each diagonal row of 3 elements 1 Bank of elements Filled circles represent heating elements the control system has energized AND is sensing electrical current from Heating elements icon for a water heater equipped with 3 Banks of heating elements Each circle represents one heatin
17. temperatures high hot water usage hydronic heating devices and water softening methods can increase the rate of anode rod depletion Once the anode rod is depleted the tank will start to corrode eventually developing a leak Certain water conditions will cause a reaction between the anode rod and the water The most common complaint associated with the anode rod is a rotten egg smell produced from the presence of hydrogen sulfide gas dissolved in the water IMPORTANT Do not remove this rod permanently as it will void any warranties A special anode rod may be available if water odor or discoloration occurs NOTE This rod may reduce but not eliminate water odor problems The water supply system may require special filtration equipment from a water conditioning company to successfully eliminate all water odor problems Artificially softened water is exceedingly corrosive because the process substitutes sodium ions for magnesium and calcium ions The use of a water softener may decrease the life of the water heater tank The anode rod should be inspected after a maximum of three years and annually thereafter until the condition of the anode rod dictates its replacement NOTE Artificially softened water requires the anode rod to be inspected annually The following are typical but not all signs of a depleted anode rod e The majority of the rods diameter is less than 3 8 e Significant sections of the support wire appro
18. the water heater s model rating plate For safe operation of the water heater the temperature and pressure relief valve must not be removed from its designated opening nor plugged The temperature pressure relief valve must be installed directly into the fitting of the water heater designed for the relief valve Install discharge piping so that any discharge will exit only within 6 inches 15 2 cm above or external to the structure Do not pipe the discharge to a crawl space Be certain that no contact is made with any live electrical part The discharge opening must not be blocked or reduced in size under any circumstances Excessive length over 30 feet 9 14 m or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve No valve or other obstruction is to be placed between the relief valve and the tank Do not connect discharge piping directly to the drain unless a 6 15 2 cm air gap is provided To prevent bodily injury hazard to life or property damage the relief valve must be allowed to discharge water in adequate quantities should circumstances demand If the discharge pipe is not connected to a drain or other suitable means the water flow may cause property damage CAUTION e Temperature pressure relief valve discharge pipe must terminate at adequate drain The Discharge Pipe e Shall not be smaller in size than the outlet pipe size of the valve or have any reducing couplin
19. u 1942M Uu e S yue Be1o s y pue s i9 e u Jon y uU mz q dund y JO4J UOD pue o Dal 9Q pjnoys JO4 UOD siN esodwe yue yL p aBesn 114 uij AoB jjeys s po e5o ISA AO0H PUN HUIDIAIOS 10 UMOUS S AJLA BDIAIOS E uu s s u u Ju uoduuoo Aue Jo Buljes inss id p x zou eys Dumas AJLA Lola nss id pue SuN essdwWes aul Z wesBeip Buidid pauajaig SALON r r C ES FN x 3OO14 G3HSINId i NIV N3dO NIV N3dO Ol d8L 3dld OL d8L Adid i NOILY0O1 3JIVN3H3LTV Ha wi LOJANNOOSIG LOANNOOSIG O C qasnad qsna A S3un1XId OL Y31YM LOH NIVYG TOYLNOS SeNLVesadWal MNVL SLNAWSAYINOAY IWNOILIGGV YOS dINNd ONILVINOUID SSAONVNIGHO ANY S3GOO W907 HLIM MOSAHO S3OIA3d YSHLO ANY NOILVYNDISNOD ONIdld GSLSADSNS SMOHS ONIMVYC SIHL ONINSVM 3ATVA d3l 13 JHNSSJHd 3ATVA salad JYNSSJYd JYNLYHYJANIL ANYL 3OV IOLS WLNOZINOH HLIM SLINN Z JIA1L9373 1VIS93233INWOS mr o H IN4941 41 RAIL YNVL NOISNVdX3 Alddns YALVM 109 D Nanay YALVM LOH EE Nivud HO LIMS MO ld 3d31VN r TOYLNOD SYNLVYaAdWAL YNVL Zeen JYNLWYadWAL dIWNd ONILVINOUID JAVA 431734 Sunssaud ANIA Ou DON 3ATVA d3l 133 Q aNqJ9 4 1 H ae o H Besn 1194 UJBAOB eus SAPO e5o ISA AOH lun BUIS 10 UMOYS IE SBAJCA 9I AJ9S E uu s s ay u Ju uoduuoo Aue Jo Hue nss id p oSx zou eys Dumas AJLA Lola nss
20. yue Beiols y pue s 19 e u J9 EM y UBEMjeq dund y ol uo2 pue o Dal Bq p nous oljjuoO i n JeJ1 duu 9 yue Su r Besn say uj AoB eus s po2o e5o AMOH WUN HUDIS JOJ UMOUS Je S AJLA JAAS E uu s s y u j u uoduuoo Aug Jo Hues inss id p x zou jeus Bu s AJLA Joljau nss id pue aimgiodua oul e upIDemp Buidid pauajaid SALON YOO14 ANVL G3HSINI4 EL NOISNVdX3 A dd dv C109 Cem NIvaO N3dO Ol dSl Adid NIVYd NadO Ol d81L Adid NIVYd NadO Ol d81L Adid NIVYG NadO Ol dl Adid NOI1VOO1 SALVNYSALIV HOLIMS 2 LOANNOOSIG qasna HOLIMS LOANNOOSIC qasna HOLIMS 2 LOANNOOSIC qasna HOLIMS LOANNOOSIG qaasna q Dao NYnlay YSLVM LOH s3unixia oL SI DA LOH NIYA HOLIMS NO 1d Ya lVM TIOYLNOD JYNLVYSdWSL MNV L SINAWSYINOAY IWNOILIGGV YOS SAONVNIGHO ANY SACO90 TVOO 1 HLIM MH dNNd ONILVINOUID 3SVS AYNLVeAdNAL S3OIA3q YSHLO ANY NOILVYNDISNOO ONIdid QALSSDSNS SMOHS ONIMVA SIHL ONINYVM 3ATVA salad JHNSSJHd SATA MO3HO ON 3ATVA d3l 133 Q QNA94F 1 So e DA YNVL SADVYOLS WLNOZINOH HLIM SLINN r R L9313 1VIO33u3INNOS 47 VAN ILD A MANIFOLD KITS ALL DIMENSIONS IN INCHES MANIFOLD KITS TWO HEATERS Tank Capacity Part Gallons Number A 9 9003429205 7012 6014 a114 934 Inlet and outlet siz
21. 0A FUSES EJ EJ H Canadian Models Canadian Models Optional Te ro DI E H Optional CO Pr D Z2orrm lt A G Pr J maoro D a CH Pr D O O CD e THERMOSTAT IP si O 0 Q O AND MANUAL Q g m RESET HIGH 5 R LIMIT SWITCH a E D D RESET HIGH Bag Lowa e ower LIMIT SWITCH a oma B L KL Cal ELEMENT N THREE ELEMENTS SINGLE AND THREE PHASE SIX ELEMENTS SINGLE AND THREE PHASE ST D DIAGRAM 3 17 SINGLE PHASE L 1 L 2 TERMINAL BLOCK BLACK BLUE YELLOW RED THREE PHASE L 2 TERMINAL BLOCK Ben BLUE YELLOW W SC FUSING 30 AMP AO PCO THERMOSTAT AND MANUAL RESET HIGH LIMIT SWITCH ne ELEMENT We NINE ELEMENTS SINGLE AND THREE PHASE DIAGRAM 4 CONVERSION TO SINGLE PHASE CONVERSION TO THREE PHASE When the heater is shipped for connection to a three phase electrical When heater is shipped for connection to a single phase electrical service it may be connected to a single phase electrical service of service it may be connected to a three phase electrical service of the same voltage by the same voltage by 1 Disconnect blue wires from terminal L2 1 Disconnect blue wires from terminal L1 2 Connect all blue wires to terminal L1 with black wires 2 Disconnect red wires from terminal L2 3 Disconnect all red wires from terminal L3 3 Connect all blue wires to terminal L2 with yellow wires 4 Connect all red wires to terminal L2 with yellow wires 4 Connect
22. A 6T3 800 265 8520 Ge Smith 500 Tennessee Waltz Parkway Ashland City TN 37015 Technical Support 800 527 1953 e Parts 800 433 2545 Fax 800 644 9306 www hotwater com Copyright 2015 A O Smith Corporation All rights reserved
23. C When the ECO switch contacts open activate voltage to ONE heating element ONLY is terminated to prevent further heating operation of that element Voltage may still be present at other heating elements and they may still be heating the water The ECO is a manual reset switch Should one or more ECO activate the tank temperature must drop below 120 F 49 C before an ECO can be reset To manually reset an ECO 1 Disconnect the power supply to the water heater 2 Allow the tank temperature to cool below 120 F 49 C 3 Remove the front control cover from the effected control s 4 Press the manual reset button on each of the effected controls Once the control s has been reset the control cover should be replaced prior to restoring power to the water heater Electronic Control Models The ECO high temperature limit switch is located inside the immersion Temperature Probe two red wires on ELECTRONIC CONTROL models The ECO switch contacts will open when the water temperature reaches approximately 202 F 94 C When the ECO switch contacts open activate the electronic control system locks out and displays a Fault message Voltage to the contactor coils and heating elements is terminated to prevent further heating operation Should the ECO activate the water temperature must drop below 140 F 60 C before the control system can be reset Once the water temperature has cooled below this point the power supply to the water heate
24. 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 Detailed installation diagrams are in this manual These diagrams will serve to provide the installer with a reference for the materials and method of piping suggested IT IS NECESSARY THAT ALL WATER PIPING AND THE ELECTRICAL WIRING BE INSTALLED AND CONNECTED AS SHOWN IN THE DIAGRAMS IN Particular attention should be given to the installation of thermometers at the locations indicated in the diagrams as these are necessary for checking the operation of the 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 page 13 The principal components of the heater are identified on pages 7 amp 8 The model and rating plate on page 6 interpr
25. Instruction Manual JVIVIE ROTA M Smith 500 Tennessee Waltz Parkway Ashland City TN 37015 SP Aan asad CERTIFIED www ahridirectory org Low Lead Content LISTED WATER QUALITY HLW OPTIONAL Thank you for buying this energy efficient water heater We appreciate your confidence in our products AWARNING Read and understand this instruction manual and safety messages before installing operating or servicing this water heater Failure to follow these instructions and safety messages could result in death or serious injury This manual must remain with water heater NA lt S TCA R MODELS DRE 52 80 120 SERIES 100 amp DVE 52 80 120 SERIES 100 INSTALLATION OPERATION SERVICE MAINTENANCE LIMITED WARRANTY a El A WARNING If the heater becomes immersed in water up to or above the level of the bottom of the element doors the heater should be examined by a qualified service agency before it is placed in operation see Page 2 PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE PRINTED 0415 196674 007 A k oji ANL The proper installation use and servicing of this water heater is extremely important to your safety and the safety of others 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 me
26. OUNDING INSTRUCTIONS This water heater must be grounded in accordance with the National Electrical Code and or local codes These must be followed in all cases Failure to ground this water heater properly may also cause erratic control system operation on ELECTRONIC CONTROL models This water heater must be connected to a grounded metal permanent wiring system or an equipment grounding conductor must be run with the circuit conductors and connected to the equipment grounding terminal or lead on the water heater HYDROGEN GAS FLAMMABLE A WARNING Explosion Hazard e Flammable hydrogen gases may be present e Keep all ignition sources away from faucet when turning on hot water Hydrogen gas can be produced in a hot water system served by this heater that has not been used for a long period of time generally two weeks or more Hydrogen gas is extremely flammable To reduce the risk of injury under these conditions 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 probably be an unusual sound such as air escaping through the pipe as the water begins to flow THERE SHOULD BE NO SMOKING OR OPEN FLAME NEAR THE FAUCET AT THE TIME IT IS OPEN When servicing this unit verify the power to the unit is turned off prior to opening the control cabinet door AWARNING Read and underst
27. SENSOR W BLUE WIRE MIDDLE BANK 2 ELEMENT SENSOR RE EN WIRE MIDDLE BANK 3 ELEMENT SENSOR J13 SIX amp NINE ELEMENTS MODEL ONLY MESS UPPER BANK 1 ELEMENT SENSOR W BLUE WIRE UPPER BANK 2 ELEMENT SENSOR UPPER BANK 3 ELEMENT SENSOR J14 NINE ELEMENTS MODEL ONLY W GREEN WIRE Figure 6 14 POWER CIRCUIT DIAGRAMS ELECTRONIC CONTROL MODELS The water heater s electrical components are pictured and identified on page 7 The following describes the heater circuits and includes wiring diagrams All heater circuits are designed for 60 50 hertz alternating current The water heater circuit wiring is 12 AWG AWM or TEW type rated 600 volts 105 C Fusing consists of three 30 amp fuses for each contactor Fusing is an optional feature for Canadian models L 2 YELLOW RED SINGLE PHASE L 1 L 2 SINGLE PHASE Li THREE PHASE TERMINAL BLOCK THREE PHASE TERMINAL BLOCK 30A FUSES Canadian Models Optional 30A FUSES Canadian Models Optional CONTACTOR BLK wv CONTACTOR ELEMENT THREE ELEMENTS SINGLE AND THREE PHASE ELEMENT SIX ELEMENTS SINGLE AND THREE PHASE DIAGRAM 1 15 SINGLE PHASE TERMINAL BLOCK THREE PHASE TERMINAL BLOCK 30A FUSES Canadian Models Optional ELEMENT L 1 BLACK BLUE L 2 YELLOW RED NINE ELEMENT SINGLE AND THREE PHASE DIAGRAM 2 CONVERSION TO SINGLE PHASE When the heater is shipped for connection to a three phase electri
28. SSoud pue suN essdWw9 oul Z wesBeip Buldid pewajaig L SALON PL ANYL NOISNYdX4 ATddNS YALVM Q1OO GE OO Q3AHSINIS NIVad N3dO Ol d l Adid dd ONILVINOUIO SAONVNIGHO ANY SSCO9 WOOT HLIM MOAHO 3SVS AYNLVeAdNAL Hunn YaLVM LOH A x LJ lt LOANNOOSIG b al er qasna LU lt lt cL I L La SAYNLXId OL f YALVM LOH NIVad HOLIMS AO 1d YALVM aE TOYLNOO SEN LVesAdNAL MNYL jJ SLNAWSAYINOAY IWNOILIGGV YOS S301430 YSHLO ANY NOILVYENDISNOD ON did GALSSADONS SMOHS ONIMVAC SIHL ONINSVM SATIVA SU bee 3ATVA salad AYNSSsadd AAWA salad Q aNdJ9q4 1 YNVL J VYXOLS IY ILYJA HLIM LINN L R3 LD93813 1VIS383IWWOS tt ae o tl 37 NAIV A LC N YNVL NOISNVdX3 Alddns j S YALVM 0709 ES NYNLaY YSLVM LOH Ou KI Z NIVYG HOLIMS MOT d31VA E JOYLNOD JYXN1LYYIdJNIL MNVL 3SV5S AYNLWYAdNSAL E dWNd ONILVINOAID JAVA 431734 Sunssaud SNWA Cu ON SS AAIVA 4413H Q IN3J39341 ojjuoo in ei duu yu y uey JeYBIy d seeiBap 198s q pinous e soway Bunei do s 19 e u Ja eM Uu S s yue Beiols y pue s 1i 1 e u J9 EM y u Au q dund y OJ UOD pue o PSJIM q p nous jojuooS SunjesOdwes yue Uu tr mo ei o DA NOILV9O71 ALVNYSALIV Besn 114 UBAOB eus SAPO e5o AABMOH PUN HUDIS 10 UMOUS Be SBAJCA BDIAIOS E uu s s y Ul u
29. Set Point and other user settings MODEL INFORMATION Tank Temperature Operating Set Point Status Heating 116 F 120 F Friday 5 00 PM Normal Mode UIM User Interface Module Figure 8 Set the Operating Set Point at the lowest setting which produces an acceptable hot water supply This will always give the most energy efficient operation RON CONTROL SYSTEM FEATURES Advanced Diagnostics Plain English text and animated icons display detailed operational and diagnostic information LCD screen on the front of the water heater displays the Sequence of Operation in real time Fault or Alert messages are displayed when operational problems occur Advanced Service menu displays a list of possible causes for current Fault and Alert conditions to aid in servicing Economy Mode Operation Control system automatically lowers the Operating Set Point by a programmed value during user defined time periods Helps reduce operating costs during unoccupied or peak demand periods Linear Sequencing Banks of heating elements 3 elements per bank are energized according to adjustable 1 to 20 differential set points for each bank First bank on is the last bank off Helps reduce operating costs during low moderate loads CONTROL SYSTEM NAVIGATION The UIM User Interface Module is located on the front cabinet of the Electronic Control Model water heaters All operational information and user settings are displayed and acces
30. ach heating element installed These thermostats are set from the factory at 140 F 60 C Set the thermostat dial at the lowest setting which produces an acceptable hot water supply This will always give the most energy efficient operation The water heater is supplied with thermostats that may come from different manufactures and have different temperature indications as described below Thermodisc Thermodisc thermostats are adjustable from approximately 120 F 49 C lowest setting to 181 F 83 C highest setting see figure 7A These thermostats are set from the factory at approximately the 140 F 60 C setting The over temperature device ECO high limit attached to each thermostat has a manual reset APCOM Thermostats Apcom thermostats have three designated set points LO MED and HI See figure 7B The approximate equivalent temperatures for these three settings are LO 140 F 60 C MED 160 F 71 C and HI 181 F 83 C These thermostats are set from the factory at the Low 140 F 60 C setting The over temperature device ECO high limit attached to each thermostat has a manual reset setting ECO top ofthe p control Dial Figure 7 B Table 6 shows the approximate time to burn relationship for normal adult skin Figure 7 A Time for Permanent Burns 2nd amp 3rd Degree Most Severe Burns Water Temperature F Time for 1st Degree Burn Less Sev
31. and this instruction manual and the safety messages herein before installing operating or servicing this water heater Failure to follow these instructions and safety messages could result in death or serious injury This manual must remain with the water heater CAUTION Improper installation use and service may e Do not operate water heater if any part has been exposed to flooding or water damage Inspect anode rods regularly replace when significantly depleted Install in location with drainage Fill tank with water before operation Properly sized thermal expansion tanks are required on all closed water systems Refer to this manual for installation and service A WARNING Explosion Hazard e Flammable hydrogen gases may be present e Keep all ignition sources away from faucet when turning on hot water A WARNING e Before removing any access panels or servicing the water heater make sure the electrical supply to the water heater is turned OFF e Failure to do this could result in death serious bodily injury or property damage Water temperature over 125 F 92 C can cause severe burns resulting in severe injury or death Children the elderly and the physically or mentally disabled are at highest risk for scald injury A DANGER Feel water before bathing or showering Temperature limiting valves are available Read instruction manual for safe temperature setting A WARNING E
32. ay Settings SELECT With Temperatures selected highlight in black in the Main Menu press the Operational Button underneath SELECT to enter the Temperatures Menu lf Temperatures is not selected use the Up and Down buttons to select this menu item Operating Set Point ist Differential 2nd Differential 3rd Differential Tank Temperature Tank Probe Offset CHANGE BACK With the Operating Set Point selected in the Temperatures Menu press the Operational Button underneath CHANGE to activate the adjustment mode for this menu item ist Differential 2nd Differential 3rd Differential Tank Temperature Tank Probe Offset Press the Up and Down buttons to adjust the Operating Set Point to the desired setting Press the Operational Button underneath UPDATE to confirm the new setting Press the Operational Button underneath CANCEL to discard the new setting and retain the previous setting The new Operating Set Point value should now be displayed as the current value NOTE Use this same procedure to adjust the Differential settings and the Tank Probe Offset in the Temperatures Menu Operating Set Point 1st Differential 2nd Differential 3rd Differential Tank Temperature Tank Probe Offset CHANGE BACK This same procedure is used to change user settings in other control system menus HEATER STATUS MENU This menu displays non adjustable operational information This menu contains more information
33. bject to normal maintenance Example non electronic anode rod filter etc Service labor shipping delivery installation handling or any other costs are not covered at any time under this warranty Any replacement part or product will be warranted only for the unexpired portion of the original water heater s limited warranty period If an identical model is no longer available due to a change in law regulation or standard we will replace the product with one having comparable capacity and input In these instances the owner will have the option of paying the difference between what was paid for the original model and the new model with the additional features or receiving a refund of the portion of the purchase price on a pro rata basis allocable to the unexpired portion of the warranty SERVICE INQUIRIES For service inquiries call the telephone number listed below WHAT S NOT COVERED e Problems caused by improper gas supply line sizing gas type venting connections combustion air voltage wiring or fusing e Failure to follow applicable codes e Failure to follow printed instructions e Abuse misuse accident fire flood Acts of God Improper installation sizing delivery or maintenance e Claims related to rust noise smell or taste of water e Failure to conduct authorized factory start up if required Alterations to the water heater e Non outdoor heaters installed outdoors e Damages due to a fa
34. cal service it may be connected to a single phase electrical service of the same voltage by 1 Disconnect blue wires and yellow wires from terminal L3 2 Reconnect all blue wires to terminal L1 with black wires 3 Reconnect all yellow wires to terminal L2 with red wires 4 Connect incoming power to terminals L1 and L2 CONVERSION TO THREE PHASE When heater is shipped for connection to a single phase electrical service it may be connected to a three phase electrical service of the same voltage by 1 Disconnect blue wires from terminal L1 2 Disconnect yellow wires from terminal L2 3 Reconnect all blue wires and yellow wires to terminal L3 4 Connect incoming power to terminals L1 L2 and L3 POWER CIRCUIT DIAGRAMS SURFACE MOUNT CONTROL MODELS The water heater s electrical components are pictured and identified on page 8 The following describes the heater circuits and includes wiring diagrams All heater circuits are designed for 60 50 hertz alternating current The water heater circuit wiring is 12 AWG AWM or TEW type rated 600 volts 105 C Fusing consists of two 30 amp fuses for each element Fusing is an optional feature for Canadian models SINGLE PHASE L 1 L 2 SINGLE PHASE L 1 L 2 TERMINAL BLOCK BLACK BLUE YELLOW RED TERMINAL BLOCK BLACK BLUE YELLOW RED THREE PHASE L 1 L 2 L 3 THREE PHASE L 1 L 2 TERMINAL BLOCK BLACK BLUE YELLOW RED TERMINAL BLOCK BLACK BLUE YELLOW LS ILe TLS OILS ILS 30A FUSES 3
35. ccumulations may cause noises to occur during operation It is recommended that a heating element be removed periodically for examination If itis scaled all of the elements should be removed and cleaned If the tank bottom has an accumulation of sediment it should be cleaned Lime scale should be removed by dissolving the accumulation in UNeLIME delimer Do not use muriatic or hydrochloric acid base deliming solutions to remove lime scale from the elements THE PROCESS FOR LIME SCALE REMOVAL IS AS FOLLOWS w P pi Turn off electrical disconnect switch Drain the heater following DRAINING instructions Open front panel Disconnect the element wiring Try not to disturb the wiring unnecessarily and reconnection will be easier Unscrew each element Remove the elements and gaskets from the openings e Use a twisting pulling action to remove elements scaled beyond the size of the tank openings e Brush loose scale from elements Lime scale removal Place limed ends of heating elements into UNeLIME delimer and allow scale to dissolve Do not permit delimer or water to contact heating element electrical terminals Silicates sulfates and aluminates must be removed by scraping or other mechanical means Lime scale dissolvents will not remove these types of scale which are occasionally encountered Call the toll free phone number on the back cover of this Instruction Manual to purchase UN LIME and heating element gaske
36. control s at the J7 socket on the CCB see wiring diagrams Enable disable circuit s status can be viewed in the Heater Status Menu Temp lt Heater SP Used for external notification when current tank temperature drops below Operating Set Point Temp lt Alarm SP Used for external notification when current tank temperature drops below programmable Alarm SP Fault or Alert Used for external notification whenever a Fault or Alert condition is active Fault Used for notification whenever a Fault condition is active Disabled Disables the Alarm Relay Output Function Alarm SP Adjustable user setting 90 F to 190 F the control system uses for the Temp lt Alarm SP function described above This setting has no effect with any other Alarm Output functions Alarm Output Settings Changing the user settings in this menu is done using the same methods for changing the Operating Set Point Service Note Adjustable user settings in the Alarm Output Setup menu are unaffected by Restore Factory Defaults 29 DISPLAY SETTINGS MENU Permits user to set display options for viewing information on the UIM s LCD screen Display Settings Temperature Units Backlight Delay oF 30s Contrast 20 d Eh CHANGE Temperature Units BACK Adjustable user setting that changes temperature units display to Celsius C or Fahrenheit F Backlight Delay Adjustable user setting that determines how long the UIM s
37. e 1 1 2 THREE HEATERS Tank Capacity Part Gallons Number A 9003430205 66 1 4 91 3 4 27 1 4 13 1 4 a 9003430205 7012 9514 3114 93 4 Inlet and outlet size 2 1 2 FOUR HEATERS Tank Capacity Part Gallons Number A 9 9003431205 7042 ioo ma 3r 2 934 Inlet and outlet size 2 1 2 48 NC 49 NC 50 COMMERCIAL WATER HEATER LIMITED WARRANTY EFFECTIVE For 3 Years in the event of a tank leak we will repair or at our discretion replace the defective water heater For 1 Year in the event of part failure we will repair or at our discretion replace the defective part We warrant this product against defects in materials or workmanship as described in this document if installed within the United States or Canada and provided the product remains at its original place of installation Warranty coverage begins the date of installation OR the date of manufacture if installation cannot be verified WHAT S COVERED Subject to these terms in the event of defect in materials and or workmanship resulting in a tank leak during the first three years we will e Replace the water heater should the tank leak Subject to these terms in the event of a defect in materials and or workmanship appearing during the first year we will e Repair or at our discretion replace any part of the water heater covered under this limited warranty excluding parts su
38. e 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 the Temperature Regulation section in this manual A WARNING Toxic Chemical Hazard e Do not connect to non potable water system ANTELO CONTAMINATED WATER This water heater shall not be connected to any heating system s 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 CIRCULATING PUMP Field installed circulating pumps should be of all bronze construction INSULATION BLANKETS Insulation blankets are available to the general public for external use on electric water heaters but are not necessary with this product The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank heaters Your water heater meets or exceeds the EPACT and ASHRAE IES 90 1 standards with respect to insulation and standby loss requirements making an insulation blanket unnecessary Should you choose to apply an insulation blanket to this heater you should follow these instructions below Failure to follow these instructions can result in fire serious personal injury or death e Do not cover the temperature and pressure relief T amp P valve with an insulation blanket e Do not cover the ins
39. e top of the Desktop Screen Tank Temperature Current water temperature as sensed from the immersion Temperature Probe Operating Set Point Temperature at which the control system will maintain tank water temperature in the Normal Mode This line of text will read Economy Set Point whenever the control system is operating in the Economy Mode Status The Operating State of the control system is displayed beneath the Operating Set Point MODEL INFORMATION Tank Temperature 118 F Operating Set Point 120 F Status Heating Review the Status Icons explanation Friday d in Table 1 Learning to use this real x 5 00 PM time visual display of the operating sequence will help to quickly and accurately diagnose operational problems STATUS Service Note The Desktop Screen displays text and animated icons that convey operational information Normal Mode e HELP Figure 10 Menu The left Operational Button is pressed to enter the Main Menu where all control system menus are accessed See Table 9 for a list of control system menus Help The right Operational Button is pressed to access instructions and explanations for user settings Operating States Status Icons manufacturer s web address technical support phone number and service agent contact information Day Time Operating Mode The current time and day are also displayed on the Desktop Screen Clock Not Set will be are adjusted in the Economy Mode Set
40. e Operating Set 2nd Differential 2 F Point the control system will end the heating cycle A call for heat will be activated again when the water temperature drops below the 3rd Differential 2 F Operating Set Point minus the 1st Differential Setting Tank Temperature 105 F Example Operating Set Point is 120 F the 1st Differential Setting is Tank Probe Offset O F 2 F factory default A call for heat will be activated when the sensed water temperature drops to 118 F CHANGE BACK 23 Differential Settings Adjustable user setting s 1 F to 20 range factory default is 2 F The water heaters covered in this Instruction Manual will have 3 6 or 9 heating elements Each group of 3 heating elements is one Bank of heating elements Heating elements are energized in Banks of 3 Each Bank of heating elements will have a Differential Setting associated with it Differential Settings are located in the Temperatures Menu There is a 1st Differential Setting on all models There will be one additional Differential Setting visible adjustable for each additional Bank of 3 heating elements Operating Sequence With an Operating Set Point of 120 F and all Differential settings at 2 F the On Off sequencing of heating element Banks would be as follows Tank Temperature Non adjustable information display Current water temperature as sensed by the control system from the immersion Temperature Probe Tank Probe Offset
41. e water heater The control system has detected declared a Fault Condition The control system will discontinue heating operation Fault and lock out Power to the water heater must be cycled off and on to reset the control system Note cycling power will not reset the control system until the condition that caused the fault has been corrected Table 8 CONTROL SYSTEM MENUS Temperatures Most commonly accessed menu Operating Set Point Differential settings Tank Temperature and Tank Probe Offset are located in this menu Deeg Current Operating State Mode heating standby etc and status open closed on off yes no of monitored water heater functions and components are displayed in this menu Economy Mode Seven day 24 hour time clock with temperature set back capability to reduce operating costs during unoccupied Setup or reduced demand periods The control system s CCB Central Control Board features on board SPDT single pole double throw relay contacts for building EMS Energy Management System notification of operational conditions such as Fault Conditions and heating mode status This menu features a list of user definable conditions for relay activation l Temperature units F or C appearance brightness contrast and backlight delay user adjustable settings are Display Settings located in this menu ZE E qon Elapsed time of operation total heating cycle time heating cycle count heating element bank s cycle cou
42. emperature sensing and limiting a UIM User Interface Module for user interface amp information display and element current sensors for monitoring the power circuits Refer to the control circuit label on the water heater for details The CCB is powered by a small 120V 24V transformer The control circuit operates on 120V supplied by a larger 100VA transformer Standard equipment includes control circuit fusing using two 3 amp class G fuses with 600 volt rating Do not substitute fuses of a different rating Sequence of Operation 1 When the control is powered the UIM should display model information water temperature Operating Set Point heating status and operating mode 2 If the control determines that the actual water temperature inside the tank is below the programmed Operating Setpoint minus the 1st differential a call for heat is activated 3 After all safety checks are verified the CCB will energize contactor coils starting with the lower bank of heating elements each diagonal row of three heating elements is considered a bank see Figure 2 then energize the middle bank if so equipped and top bank if so equipped The middle and top banks if so equipped are energized according to programmed 2nd and 3rd differential set points 4 The control remains in the heating mode until the water temperature reaches the programmed Operating Setpoint At this point the contactors will be de energized in the reverse orde
43. er Interface Module CURRENT FAULT ALERT MENU This menu displays non adjustable operational information With the Fault History sub menu selected in Main Menu press the Operational Button underneath SELECT to display the current Fault or Alert message If there is not a Fault or Alert condition currently active none is displayed to the right of this menu Main Menu Current Fault Selected Main Menu Heater Information Current Fault Fault History Fault Occurrence Restore Factory Defaults SELECT BACK d E b FAULT HISTORY MENU Fault History Menu Fault History No Current Detected 40D 1 days 5 hrs 45 mins ago Energy Cut Out ECO A5 1 days 6 hrs 20 mins ago Temp Probe Short 45 2 days ihrs 10 mins ago No Current Detected 40D qs Hb 30 This menu displays non adjustable operational information The control system records and stores the last 9 Fault and Alert messages in chronological order in this menu The most recent will be at the top of the list Atime stamp is displayed below each listed Fault and Alert message showing when the Fault or Alert condition occurred The Fault History is useful when dealing with intermittent operational problems or when the customer has reset the control system prior to a service agent s arrival With a Fault or Alert item selected press the Operational Button underneath VIEW to display the details for the Fault or Alert message The Fault Ale
44. er heater follow the draining instructions in this manual and replace the temperature pressure relief valve with a properly rated sized new one If you do not understand these instructions or have any questions regarding the temperature pressure relief valve call the toll free number listed on the back cover of this manual for technical assistance WATER LINE CONNECTIONS This manual provides detailed piping installation diagrams see back section of this manual for typical methods of application For the heater inlet and outlet connections dielectric unions are recommended The water heater may be installed by itself or with a separate storage tank on both single and two temperature systems When used with a separate storage tank the circulation may be either by gravity or by means of a circulating pump When a circulating pump is used it is important to note that the flow rate should be slow so that there will be a minimum of turbulence inside the heater CLOSED WATER SYSTEMS Water supply systems may because of code requirements or such conditions as high line pressure among others have installed devices such as pressure reducing valves check valves and back flow preventers Devices such as these cause the water system to be a closed system THERMAL EXPANSION As water is heated it expands thermal expansion In a closed system the volume of water will grow when it is heated As the volume of water grows there will be a co
45. ere Burns 110 normal shower temp 116 pain threshold 11 35 minutes 45 minutes N N 1 minute 5 minutes 5 seconds 25 seconds CH 2 seconds 5 seconds 1 second 2 seconds cO On A instantaneous 1 second U S Government Memorandum C P S C Peter L Armstrong Sept 15 1978 Table 6 EE EE ee THERMOSTAT SETTINGS ELECTRONIC CONTROLS ADANGER Water temperature over 125 F 52 C can cause severe burns resulting in severe injury or death Children the elderly and the physically or mentally disabled are at highest risk for scald injury Feel water before bathing or showering Temperature limiting valves are available Read instruction manual for safe temperature setting These models are equipped with an electronic control system The control system senses temperature from a factory installed Immersion Temperature Probe see Figure 2 The Operating Set Point is adjusted to control water temperature This is an adjustable user setting in the control system s Temperatures Menu This and all control system menus are accessed through the UIM User Interface Module see Figure 8 located on the front panel of the water heater The Operating Set Point is adjustable from 90 F 42 C to 190 F 88 C The factory setting is 120 F 49 C See the Electronic Control Models Operation section of this manual for instructions on how to adjust the Operating
46. essive water temperature e Faulty relief valve e Excessive water pressure 3 Excessive water pressure is the most common cause of relief valve leakage It is often caused by a closed system See Closed Water Systems and Thermal Expansion in the Installation section of this manual for more information 4 Examine the area around the element for gasket leakage e Tighten the elements or if necessary follow the WATER AND LIME SCALE REMOVAL procedure to replace the gaskets IF YOU CANNOT IDENTIFY OR CORRECT THE SOURCE OF MALFUNCTION 1 Turn the power supply to the water heater off 2 Close the supply water inlet valve to the heater 3 Contact a Qualified Service Agency in your area REPLACEMENT PARTS Call the toll free phone number listed on the warranty sheet of this Instruction Manual for assistance in locating replacement parts When ordering parts specify complete model no serial no see rating plate quantity and name of part desired Standard hardware items should be purchased locally LEAKAGE CHECKPOINTS INSTRUCTIONS USE THIS ILLUSTRATION AS A GUIDE WHEN CHECKING FOR SOURCES OF WATER LEAKAGE Drain valve leakage could be from the valve itself Either correct the problem or replace the valve To check for leakage where threaded portion enters tank insert Q tip or similar absorbent material between jacket opening and valve to swab spud area Remove valve if leak is indicated and repair
47. ets 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 current 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
48. g element Each diagonal row of 3 elements 1 Bank of elements Open circles with an X represent heating elements the control system has energized that it IS NOT sensing electrical current from The control has detected declared a Fault Condition Fault message details can be viewed in the Current Fault menu Heating operation is discontinued locked out until the condition that caused the fault is corrected Power to the water heater must be cycled off and on to reset the control system Note Cycling power will not reset the control system if the condition that caused the fault has not been corrected The control has detected declared an Alert Condition The water heater will continue to operate during an Alert Condition but there is an operational condition that requires the attention of a Qualified Service Agent Alert message details can be viewed in the Current Alert menu STEI ow Rew STI Table 7 22 OPERATING STATES STATE DESCRIPTION Siandb The water heater is not in an active heating cycle This usually indicates the temperature in the tank has reached y the Operating Set Point and the control system has terminated the heating cycle The control system is in the Heating Mode At least one bank of heating elements has been energized Alert The control system has detected declared an Alert Condition The controls system will continue heating operation However a Qualified Service Agent should be contacted to check service th
49. gs or other restrictions e Shall not be plugged or blocked e Shall not be exposed to freezing temperatures e Shall be of material listed for hot water distribution e Shall be installed so as to allow complete drainage of both the Temperature Pressure Relief Valve and the discharge pipe e Must terminate a maximum of six inches above a floor drain or external to the building In cold climates it is recommended that the discharge pipe be terminated at an adequate drain inside the building e Shall not have any valve or other obstruction between the relief valve and the drain 11 ADANGER Water temperature over 125 F 52 C can cause severe burns resulting in severe injury or death Children the elderly and the physically or mentally disabled are at highest risk for scald injury Feel water before bathing or showering Temperature limiting valves are available Read instruction manual for safe temperature setting The temperature pressure relief valve must be manually operated at least once a year Caution should be taken to ensure that 1 no one is in front of or around the outlet of the temperature pressure relief valve discharge line and 2 the water manually discharged will not cause any bodily injury or property damage because the water may be extremely hot If after manually operating the valve it fails to completely reset and continues to release water immediately close the cold water inlet to the wat
50. h the front control panel Suggested clearances from adjacent surfaces are 12 inches on top 30 inches in front for access to the unit The heater may be installed on or against combustible surfaces The left side and back may be placed flush against adjacent surfaces The temperature of the space in which the water heater is installed must not go below 32 F or above 122 F REQUIRED ABILITY Installation and service of this water heater requires ability equivalent to that of a qualified agency page 2 in the field involved Plumbing and electrical work is required GENERAL 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 current 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 Note To comply with NSF Standard 5 installation requirements the bottom of the water heater must be sealed to the floor with a silicone based sealant or elevated 6 inches above the floor Do NOT test electrical system before heater is filled with water follow the START UP procedure in the
51. igure 2 k JVIFON V IB d SU T amp P VALVE COMBINATION CONTROLS WATER INLET POWER DISTRIBUTION BLOCK THERMOSTAT ECO WATER OUTLET HEATING ELEMENTS PLUG Figure 3 SURFACE MOUNT CONTROL MODELS POWER CIRCUIT FUSE BLOCKS ASME PLATE IF APPLICABLE DRAIN 0107 E g FACTS TO CONSIDER ABOUT THE LOCATION CAUTION e All water heaters eventually leak e Do notinstall without adequate drainage Carefully choose a location for the new water heater The placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the water heater Whether replacing an old water heater or putting the water heater in a new location the following critical points must be observed The water heater must be located e Ona level surface Shim the channel type skid base as necessary if levelling is required D m i L a Near a floor drain The heater should be located in an area where leakage of the tank or connections will not result in damage to the area adjacent to the heater or to lower floors of the structure Close to the point of major hot water usage and the power supply Hot water piping and branch circuit wiring should be as short as possible Insulate hot and cold water piping where heat loss and condensation may be a problem Heater construction permits installation maintenance and service work to be performed throug
52. ilure to allow for thermal expansion e Heat exchanger failure due to lack of adequate proper supply of water e Heaters moved from their original location Service trips to explain proper installation use or maintenance of the product unit or to describe compliance requirements under applicable codes and regulations e Charges related to accessing your heater including but not limited to door wall removal equipment rental etc e Replacement parts after expiration of this warranty LIMITATIONS NOTWITHSTANDING ANYTHING ELSE TO THE CONTRARY THIS IS YOUR SOLE AND EXCLUSIVE WARRANTY ALL OTHER WARRANTIES INCLUDING A WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE ARE EXPRESSLY DISCLAIMED SELLER SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL INCIDENTAL SPECIAL PUNITIVE OR OTHER INDIRECT DAMAGES TOTAL LIABILITY ARISING AT ANY TIME SHALL NOT EXCEED THE PURCHASE PRICE PAID WHETHER BASED ON CONTRACT TORT STRICT LIABILITY OR ANY OTHER LEGAL THEORY Be prepared to provide the following information name address and telephone number the model and serial number of the water heater proof of installation and a clear description of the problem For your records fill in the product Serial Model U S Customers A O Smith Corporation 500 Tennessee Waltz Parkway Ashland City Tennessee 37015 800 527 1953 www hotwater com 51 Canadian Customers P O Box 310 768 Erie Street Stratford Ontario N5
53. k all water and electrical connections for tightness Also check connections on top and side of heater Repair water leaks and tighten electrical connections as necessary 3 Depress the red manual reset button on each Thermostat ECO combination control Surface Mount Control Models only 4 Turn on the electrical disconnect switch 5 Observe the operation of the electrical components during the first heating cycle Use care as the electrical circuits are energized 6 Close the front panel Temperature control and contactor operation should be checked by allowing heater to come up to temperature and shut off automatically Use care as the electrical circuits are energized DRAINING THE WATER HEATER It is recommended that the water heater storage tank be drained and flushed every 6 months to reduce sediment buildup The water heater should be drained if being shut down during freezing temperatures See Features And Components in this manual for the location of the water heater components described below A DANGER e Burn harzard e Hot water discharge e Keep hands clear of drain valve discharge TO DRAIN THE WATER HEATER STORAGE TANK 1 Turn off the electrical supply to the water heater at the breaker or disconnect switch Ensure the cold water inlet valve is open Open a nearby hot water faucet and let the water run until the water is no longer hot Close the cold water inlet valve to the water heater C
54. ly one Operating Mode can be active the there will also be start and stop times to program The normal factory default is Normal Operation All Day Operating Set Point is used between the programmed start and stop times and the Economy Set Point will be in effect during the rest of Normal Operation All Day When this operating mode is active the the day There is one start time and one stop time event per day normal Operating Set Point is used for the entire day ECONOMY MODE SETTINGS Economy Mode All Day When this operating mode is active the Economy Set Point is used for the entire day Setpoint Adjustment Value ACTION DISPLAY MODEL INFORMATION o From the Desktop Screen press the Operational Button underneath MENU Tank Temperature 120 F to enter the Main Menu Operating Set Point 120 F Status Standby Notice how the text above the Operational Buttons on the display changes O Friday as you navigate through the various menus and screens 5 00 PM Normal Mode Main Menu Temperatures Use the Up Down buttons to select highlight in black the Economy Mode Heater Status Setup menu from the Main Menu Press the Operational Button underneath Economy Mode Setup SELECT to enter the Economy Mode Setup menu Alarm Output Setup Display Settings Economy Mode Setup Setpoint Adjustment 40 Current Time Wed 4 19 PM Use the Up Down buttons to select highlight in black Setpoint Adjustment Heater In Economy Mode
55. nductor and overcurrent protection sizing Single phase heaters are two wire circuits Three phase heaters are three wire circuits In addition to the foregoing a grounded conductor is required The rating of the overcurrent protection must be computed on the basis of 125 of the total connected load amperage Where the standard ratings and settings do not correspond with this computation the next higher standard rating or setting should be selected HEATER CIRCUITS ELECTRONIC CONTROL MODELS The water heater s electrical components are pictured and identified in Figure 2 and Figure 3 The model and rating plate illustration on page 4 identifies heater circuit ratings The ELECTRONIC CONTROL model has two electrical circuits The control circuit which controls the electrical power to heating elements referring the following control circuit diagram Figure 6 The power circuit which is operated by the control circuit carries the electrical load of the heating elements The following describes the heater circuits and includes wiring diagrams for Delta configuration refer to the WYE Configuration Insert for water heaters operating at 380V 400V 416V 575V All heater circuits are designed for 50 60 cycle alternating current CONTROL CIRCUIT ELECTRONIC CONTROL MODELS These models are equipped with an electronic control system The system includes a CCB Central Control Board an immersion temperature probe with ECO for t
56. not replace the heater until a full inspection of all potential leak points is made and corrective steps taken to stop the leak Leakage from other appliances water lines or ground seepage should also be suspected until proved otherwise NAIV MNVL NOISNVdX4 Addi YAaLVM OO NAU 24 A7IvA LOH Mod HOLIMS MO 923 R JONLNOD SYNLWYAdWAL NL J39Y9 JYNLYYIdNIL df ONILVINOUIO JAYA YOSHO a 3ATVA d3l 13 AYNSSsadd 3ATVA d3l 1331 Q aNdJ9q41 Besn slay UJAO jjeys s poo e90 J A MOH PUN HUIDIA S JOJ UMOUS Je S AJLA JAAS E uiaisAs y Ul JUsUOdWUOD Aug Jo Bues inss id pesoxs zou eys Dumas AJLA Jaljou nss id pue nzes dw oul Z wesBeip Buldid palaz ld SALON HOCH GSHSINI4 NIVYG N3dO Ol d91 Adid H LIMS LOANNOOSIG A dasna SSYNLXIA OL YSLVM LOH SLNAWSYINOAY WNOILIGGV HOS SSAONVNIGHO ANY SACOO TVOO 1 HLIM MOSHO S3OIA3dq YSHLO ANY NOILVYNDISANOO ONIdid GSLSADONS SMOHS ONIMVHAC SIHL ONINSVM LINN L 3A193713 WIDYSWNOD 36 avai JO4JUOD Sunjesoedwe Yue y uey JeUbIy d SeeuBep S q p nous ezsoway Hulesedo es ua e9y JOJEM BU SG S yue Beiols y pue s 1 e u Jop BY u wu q dund y ol uo2 pue o Dol Bq pinoys OJ UOD SINJeJodwea Yue SUL r aGesn say UJAO eus SAPO e5o J A MOH PUN HUIDIAJOS 10 UMOUS Be SBAJCA 9IAJ9S E uu s s y u JU UOdWOD Aug Jo Bues inss id p 25x zou eUS Dumas AJLA J l j 1 SBIN
57. nt and heating bank on time along with UIM and CCB software revisions can be viewed in this menu Current Fault Alert Displays any current Alert or Fault messages Fault Histor Retains 9 event history of Fault Alert messages with time stamp The Fault History is useful when dealing with intermittent y operational problems or when the customer has reset the control system prior to a service agent s arrival ST E Running total of all Fault and Alert Conditions that have occurred are displayed in this menu Can help determine potential root cause s of related operational problems Restore Factory This control system feature allows the user to restore control system user settings to their factory default settings Defaults Alarm Output Setup and Display Settings menu items ARE NOT changed when factory defaults are restored Alarm Output Setup Accessible by pressing the corresponding Operational Button from most menus and screen displays This menu Help Menu provides access to instructions and explanations for user settings Operating States Status Icons manufacturer s web address technical support phone number and service agent contact information Table 9 TEMPERATURES MENU Temperatures rN Operating Set Point Operating Set Point ed Ge User adjustable setting 90 F to 190 F range factory default is ist Differential 2 F Ge 120 F When the water temperature sensed by the control system i I from the immersion Temperature Probe reaches th
58. o Setup menu The new settings should be shown for Mon Sun Economy Mode All Day Mon Normal 7 30 AM to 8 00 PM Tue Normal All Day Wed Normal All Day CHANGE BACK Economy Mode Setup 28 ALARM OUTPUT SETUP MENU Permits user to set the condition from a list of options for when the CCB s integral alarm output relay will be energized Alarm relay connections common normally open normally closed are located on the J3 terminal strip on the CCB Alarm output relay contacts are capable of switching 1 amp maximum at 120 VAC The alarm relay operates in the background according to the settings in this menu and is not capable of disabling water heater operation The alarm relay is used for external notification verification of various operational conditions such as fault conditions and heating mode status This relay can be used with building EMS Energy Management System and other external supervisory controls Alarm Output Setup Output Function Fault Alarm SP 120 F CHANGE Alarm Output Setup Output Function Temp lt Alarm SP Alarm SP 120 F CHANGE Output Function Adjustable user setting Available options for the Alarm Output Function setting are Heating Mode Used for heating mode on off status notification Enable Disable Closed Used for notification and or verification of the enable disable circuits open closed status There are two enable disable circuits available for external Supervisory
59. odwe yue y uey i 9uBiu 4 s 16 p S q p nous 1e1souuj u Hulesedo Ss iaa 197EM BU SG S yue apos y pue s 1 e u Jop BY u wu q dund y JO4 UOD pue o Dol q p nous OJ UOD SINJeJodwea Yue oul r Besn say uj AoB eus SAPO e5o I A AOH YUN HUIDIAJOS 10 UMOUS Be SBAJCA 9IAJ9S E uu s s y u JUaUOdWOD Aug Jo Bues inss id p 25x zou jjeys Dumas AJLA Jol ou BINSSeud pue suN essdWw9 oul Z wesBeip Buldid pewajaig L SALON BESSERES X00714 NI G3SHSINIA NOISNVdX4 Add SA OO NIV Id N3dO NIVYG N3dO NYNLJY OL dal Jdid OL d8L 2dld YSLVM LOH lt Lu z 193NNO SIA LOANNOOSIC x qasna qasna u ct a ei A e SSYNLXlda OL A YSLVM LOH NIvya HOLIMS NO OI JOYLNOOD AYNNIVYAdWAL YNVL SLNAWSAYINOAY WNOILIGGV YOS SAONVNIGHO ANY SSCO9 WOOT HLIM MOSAHO ASVS AYNLVeAdNAL dWNd ONILVINOUIO S301430 YSHLO ANY NOILVYENDISNOD ONI did GALSSADONS SMOHS ONIMVAC SIHL ONINSVM 3ATVA SU Ess 3ATVA salad AYNSSsadd 3ATVA d3l 1381 Q IN4941 w lt BO H YNVL 3SV O1S IWOILYSA HLIM SLINN Z 3 103113 1VIO933u3INWOS 40 SALV NYL NOISNVdX3 AlddnNs dv OO e ai Nd YALVM LOH HOLIMS AO 1d dd31VA u 3SVS AYNIWeAdNSAL ANWA y03H0 ON JA IVA TIVE LdOd TIN4 Q O4JUOD SIN esedw9 yue y uey 1 uBiu d s 1B p s q pinous e soway Bunei do s 1 e
60. onal Button underneath CHANGE to enter the Current Time sub menu Use the Up Down buttons to select the Weekday setting Press the Operational Button underneath CHANGE to activate the adjustment mode for this setting Press the Up and Down buttons to adjust the Weekday setting to the current day Notice how the text above the Operational Buttons on the display changes to ACCEPT amp CANCEL when the adjustment mode is activated and how the current setting is outlined rather than highlighted in black Press the Operational Button underneath ACCEPT to enter and confirm the new setting Pressing the Operational Button underneath CANCEL would discard the new setting and retain the previous setting Use the Up Down and the CHANGE ACCEPT Operational Buttons to individually select and change the remaining time settings Hour Minutes AM PM to the current time in the same way as outlined above When finished making changes press the Operational Button underneath BACK to confirm all new settings and update the control system The display will automatically return to the Economy Mode Setup menu The new settings should be displayed as the Current Time 27 Economy Mode Setup Setpoint Adjustment Current Time Heater In Economy Mode Sun Normal All Day Mon Normal All Day Tue Normal All Day Wed Normal All Day CHANGE BACK Current Time Weekday MEISE Time 4 19 PM CHANGE BACK
61. onnect a hose to the water heater drain valve and terminate it to an adequate drain 6 Open the water heater drain valve and allow all the water to drain from the storage tank 7 Close the water heater drain valve when all water in the storage tank has drained Close the hot water faucet opened in Step 3 If the water heater is going to be shut down for an extended period the drain valve should be left open Vit HIGH TEMPERATURE LIMIT CONTROLS ECO Both the ELECTRONIC CONTROL and SURFACE MOUNT CONTROL model water heaters are equipped with one or more ECO energy cut out non adjustable high temperature limit control s An ECO is a normally closed switch that opens activates on a rise in temperature If the ECO switch contacts open activate due to abnormally high water temperatures it will lock out and disable further heating element operation It is important that a qualified service agent be contacted to determine the reason for the ECO activation before resetting the ECO Once the reason has been determined and corrected the ECO s can be reset as follows Surface Mount Control Models Surface Mount Control models have multiple surface mounted Thermostat ECO combination controls One for each installed heating element see the Surface Mount Control wiring diagrams in this manual The ECO high temperature limit switch contacts on each control will open when the tank temperature reaches approximately 200 F 93
62. r 19 TEMPERATURE REGULATION E 20 High Temperature Devices 20 Thermostat Controls jscbsdectsetecchinsoclaenednardeniaacenndesctieiiesesnceabecesns 20 Thermostat Settings Surface Mount Control Models 20 I N N Thermostat Settings Electronic Control Models 21 ELECTRONIC CONTROL MODELS ORERATION 21 Control System Features 21 Control System Navigation 21 Desktop Screen 21 23 Temperatures Menu 23 24 Temperature Settings 24 Heater E EE 25 Economy Mode Setup Menu 25 26 Economy Mode Settings 26 28 Alarm Output Setup Men 29 Display Settings Menu 29 Heater Information Menu 29 30 Current Fault Alert Menu oonnnnnnnnnnnnnnnnnnnnnnnnnsennnsnnnnnnnnenennennne 30 Fault Occurrence Menu 30 Restore Factory Defaults Menu
63. r 5 The control system now enters the standby operating mode while continuing to monitor the water temperature and the state of other system devices If the water temperature drops below the programmed Operating Setpoint minus the 1st differential the control will automatically return to step 2 and repeat the heating cycle NOTE See the Electronic Control Models Operation section for more detailed information on temperature settings mentioned above 120 VAC CONTROL CIRCUIT TRANSFORMER CONNECTIONS ELECTRONIC CONTROL MODELS NOTE THIS TABLE TO BE USED FOR 8 TAP AND 5 TAP TRANSFORMERS H amp H4 X amp X4 1 GC E Ke Figure 4 13 1 2 3 4 5 COMMON 208V 240V 277V 480V bu aa luu Lann CUA ECONDARY 120V D Figure 5 8 VOLTS LINE ON LOAD ON COMMON amp 208 COMMON amp 240 COMMON amp 277 COMMON amp 480 Table 5 SECONDARY 120V Uilvdlv JIAGKAIV CCB CENTRAL CONTROL BOARD CONTROL CIRCUIT DIAGRAM ELECTRONIC CONTROL MODELS TERM BLK L1 L2 L3 120V TRANSFORMER DN 3 AFUSE UPPER BANK CONTACT COILS NINE ELEMENTS MODEL ONLY SIX AND NINE ELEMENTS MODEL ONLY MIDDLE BANK CONTACT COILS LOWER BANK CONTACT COILS TEMP amp ECO PROBE 1 S 2 JUMPER ENABLE DISABLE 1 3 rar JUMPER ENABLE DISABLE 2 W RED WIRE LOWER BANK 1 ELEMENT SENSOR W BLUE WIRE LOWER BANK 2 ELEMENT SENSOR EE LOWER BANK 3 ELEMENT SENSOR W RED WIRE MIDDLE BANK 1 ELEMENT
64. r must be turned off and on again to reset the control system THERMOSTAT CONTROLS The water heaters covered in this instruction manual are equipped with adjustable thermostat controls to control water temperature Hot water temperatures required for automatic dishwasher and laundry use can cause scald burns resulting in serious personal injury and or death The temperature at which injury occurs varies with the person s age and duration of exposure The slower response time of children the elderly or disabled persons increases the hazards to them Never allow small children to use a hot water tap or draw their own bath water Never leave a child or disabled person unattended in a bathtub or shower The water heater should be located in an area where the general public does not have access to set temperatures Setting the water heater temperatures at 120 F will reduce the risk of scalds Some States require settings at specific lower temperatures 20 v R THERMOSTAT SETTINGS SURFACE MOUNT CONTROL ADANGER Water temperature over 125 F 52 C can cause severe burns resulting in severe injury or death Children the elderly and the physically or mentally disabled are at highest risk for scald injury Feel water before bathing or showering Temperature limiting valves are available Read instruction manual for safe temperature setting These models have multiple thermostat ECO combination controls one for e
65. red wires to terminal L3 5 Connect incoming power to terminals L1 and L2 5 Connect incoming power to terminals L1 L2 and L3 18 GENERAL Refer to the Features and Components section of this manual pages 7 amp 8 for the location of components mentioned in the instructions that follow NEVER turn on power to the water heater without being certain the water heater is filled with water and a temperature and pressure relief valve is installed in the relief valve opening DO NOT TEST ELECTRICAL SYSTEM BEFORE HEATER IS FILLED WITH WATER FOLLOW FILLING AND START UP INSTRUCTIONS IN OPERATION SECTION ADANGER Full power is present whenever the cabinet door is opened even with the pilot switch turned off FILLING THE WATER HEATER CAUTION Property Damage Hazard e Avoid water heater damage e Fill tank with water before operating 1 Turn off the electrical disconnect switch 2 Close the water heater drain valve 3 Open a nearby hot water faucet to permit the air in the system to escape 4 Fully open the cold water inlet pipe valve allowing the heater and piping to be filled 5 Close the hot water faucet as water starts to flow The heater is now ready for STARTUP and TEMPERATURE REGULATION INITIAL START UP The following checks should be made by the installer when the heater is placed into operation for the first time 1 Turn off the electrical disconnect switch 2 Open the front panel chec
66. rical disconnect switch serving the water heater is in the ON position 2 Check the fuses e The electrical disconnect switch usually contains fuses e The heater has fusing 3 If the water was excessively hot and is now cold the high limit switch may have activated e See the Temperature Regulation section of this manual for more information on how to reset the ECO high limit controls 4 The capacity of the heater may have been exceeded by a large demand for hot water e Large demands require a recovery period to restore water temperature 5 Cooler incoming water temperature will lengthen the time required to heat water to the desired temperature 6 Look for hot water leakage 7 Sediment or pipe scale may be affecting water heater operation 34 k E ABNORMAL SOUNDS 1 Sediment or lime scale accumulations on the elements causes sizzling and hissing noises when the heater is operating e The sounds are normal however the tank bottom and elements should be cleaned See the Maintenance section of this manual 2 Some of the electrical components of the water heater make sounds which are normal e Contactors will click or snap as the heater starts and stops e Transformers and contacts often hum Water leakage is suspected Refer to Leakage Checkpoint on the following page 1 Check to see if the heater drain valve is tightly closed 2 Ifthe outlet of the relief valve is leaking it may represent e Exc
67. rresponding increase in water pressure due to thermal expansion Thermal expansion can cause premature tank failure leakage This type of failure is not covered under the limited warranty Thermal expansion can also cause intermittent temperature pressure relief valve operation water discharged from the valve due to excessive pressure build up This condition is not covered under the limited warranty The temperature pressure relief valve is not intended for the constant relief of thermal expansion A properly sized thermal expansion tank must be installed on all closed systems to control the harmful effects of thermal expansion Contact a local plumbing service agency to have a thermal expansion tank installed A WARNING e Before removing any access panels or servicing the water heater make sure the electrical supply to the water heater is turned OFF e Failure to do this could result in death serious bodily injury or property damage GENERAL 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 current editions of the National Electrical Code NFPA 70 or the Canadian Electrical Code CSA C22 1 An electrical ground is required to reduce risk of electrical shock or possible electrocution The water heater should be connected to a separate grounded branch circ
68. rt message screen displays a brief description of the condition contact information and access to the Advanced service information sub menu Current History Fault Message Temp Probe Short Fault occured 14 mins ago There is a problem with the temperature probe Call a service professional Paul Stewart AAA XXX KX XX press DOWN for more BACK ADVANCED FAULT OCCURRENCE MENU Total accumulated number each individual Fault condition has occurred is displayed in this menu This running total of Fault Occurrences can be useful in determining which if any operational problems have been persistent Fault Occurrence Menu Fault Occurrence ECO No Current Detected Tank Temp Probe CCB Hardware Model Faults qs x BACK HELP RESTORE FACTORY DEFAULTS MENU This control system menu allows the user to restore most of the control system s user settings to their factory default settings User settings in the Alarm Output Setup and Display Settings menus are unaffected by executing Restore Factory Defaults Restore Factory Defaults ACTION DISPLAY Main Menu From the Main Menu use the Up Down buttons to select highlight in black Heater Information the Restore Factory Defaults menu Current Fault Fault History Fault Occurrence Restore Factory Defaults SELECT BACK HELP Press the Operational Button underneath SELECT The Restore Factory Defaults menu will be displayed Restore Fac
69. sed using the UIM The UIM includes five snap acting momentary user input buttons an Up Down and 3 Operational Buttons Up amp Down Buttons LCD Screen Information Navigate Menu Items Display Area Adjust User Settings MODEL INFORMATION Tank Temperature 116 F Operating Set Point 120 F Status Heating Friday See 5 00 PM e e Normal Mode MENU HELP 3 Operational Buttons Navigate Menus Activate Adjustment Modes Update Cancel Changes UIM USER INTERFACE MODULE Figure 9 ON TRO NI OPERALION Up amp Down Buttons Used to navigate up and down and to select highlight menu items Also used to adjust or change increase decrease on off set time various user settings Operational Buttons The 3 Operational Buttons are multifunctional Their current function is defined by the text that appears above each button on the LCD screen The function will change depending on what menu is currently displayed or what menu item is selected When no text appears on the LCD screen above an Operational Button there is no function assigned THE DESKTOP SCREEN Figure 10 below shows the control system Desktop Screen This is the default screen If there are no active Fault or Alert conditions and no user input for approximately 10 minutes the control system will return to this screen automatically Model Information Model information and menu titles are shown in the black bar at th
70. ssages and instructions throughout this manual It is very important that the meaning of each safety message is understood by you and others who install use or service this water heater This is the safety alert symbol It is used to alert you to potential personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or death DANGER indicates an imminently hazardous A DANGER situation which if not avoided will result in death or injury WARNING indicates a potentially hazardous A WARNING situation which if not avoided could result in death or injury CAUTION indicates a potentially hazardous A CAUTION situation which if not avoided could result in minor or moderate injury CAUTION used without the safety alert symbol indicates a potentially hazardous CAUTION situation which if not avoided could result in property damage All safety messages will generally tell you about the type of hazard what can happen if you do not follow the safety message and how to avoid the risk of injury The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances known to the State of California to cause cancer birth defects or other reproductive harm and requires businesses to warn of potential exposure to such substances This product contains a chemical known to the State of California to cause cancer birth defects or o
71. ter heater Open the water heater drain valve to flush the storage tank Flush the water heater storage tank to remove sediment and allow the water to flow until it runs clean 8 Close the water heater drain valve when flushing is completed 9 Remove the drain hose Fill the water heater see the Filling The Water Heater section in this manual 11 12 Turn on the electrical supply to the water heater Place the water heater back in operation Allow the water heater to complete several heating cycles to ensure it is operating properly SEDIMENT REMOVAL Water borne impurities consist of fine particles of soil and sand which settle out and form a layer of sediment on the bottom of the tank In time if not removed the level of sediment might reach the heating elements and cause their failure For convenience sediment removal and element lime scale removal should be performed at the same time as follows LIME SCALE REMOVAL Lime scale accumulations on the heating elements is a normal condition common to all immersion type elements Factors which affect the amounts of this formation are 1 Amount of hot water used As the volume of water heated increases more scale results 2 Water temperature As the temperature of the water is increased more scale is deposited on the elements 3 Characteristics of water supply Regardless of water treatment the elements should be examined regularly Lime scale a
72. that can be displayed on one screen of the LCD display Use the Up amp Down Buttons to navigate to the bottom of this menu Top of Menu Heater Status Status Element Banks On ECO Contact Enable Disable 1 Enable Disable 2 Element Bank 1 On Element Bank 2 On q bd HELP Bottom of Menu Heater Status Enable Disable 1 Enable Disable 2 Element Bank 1 On Element Bank 2 On Element Bank 3 On Alarm Condition Alarm Relay Output Closed Closed Yes No No No 42 _ HELP Status Displays the current Operating State of the control system IE Heating Standby Fault see Table 8 Element Banks On Displays the current number of heating element Banks the control system has energized Each Bank of elements contains 3 heating elements ECO Contact Displays the current state of the ECO high temperature limit switch contacts The ECO switch is located inside the immersion Temperature Probe two red wires Enable Disable 1 amp 2 Displays the current state open or closed of the two Enable Disable circuits J7 socket on the CCB see wiring diagrams provided for external supervisory controls such as building EMS Energy Management System Both of these Enable Disable circuits must be closed to enable heating operation If either Enable Disable circuit is open for any reason heating operation will be disabled There is a plug with two jumper wires installed from the factory in the
73. ther reproductive harm This water heater can cause low level exposure to some of the substances listed in the Act IMPORTANT DEFINITIONS e Qualified Installer or Service Agency Installation and service of this water heater requires ability equivalent to that of a Qualified Agency as defined by ANSI below in the field involved Installation skills such as plumbing electrical supply are required in addition to electrical testing skills when performing service e 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 engaged in and is responsible for a the installation testing or replacement of gas piping or b the connection installation testing repair or servicing of appliances and equipment that is experienced in such work that is familiar with all precautions required and that has complied with all the requirements of the authority having jurisdiction NFORMALION PRECAUTIONS DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN EXPOSED TO FLOODING OR WATER DAMAGE Immediately call a qualified service technician to inspect the water heater and to replace any part of the control system which has been under water If the unit is exposed to the following do not operate heater until all corrective steps have been made by a qualified service technician 1 External fire 2 Damage 3 Firing without water GR
74. tory Defaults From the Restore Factory Defaults menu press the Operational Button underneath YES The display will show text confirming the factory default Are you sure you want to restora the systam to fackery settings have been restored defaults Press the Operational Button underneath BACK to exit the Restore Factory Defaults menu GENERAL Periodically the drain valve should be opened and the water allowed to run until it flows clean This will help to prevent sediment buildup in the tank bottom A D A N G E R Periodically check the temperature and pressure relief valve to ensure e Burn hazard that it is in operating condition Lift the lever at the top of the valve several times until the valve seats properly and operates freely Water heater maintenance includes periodic tank flushing and e Hot water discharge cleaning and removal of lime scale from the heating element The heater tank is equipped with an anode rod to aid in corrosion control e Keep clear of relief valve and should be inspected periodically see Anode Rod Inspection discharge outlet 31 ANODE ROD INSPECTION CAUTION Avoid water heater damage e Inspection and replacement of anode rod required Each water heater contains at least one anode rod which will slowly deplete due to electrolysis prolonging the life of the water heater by protecting the glass lined tank from corrosion Adverse water quality hotter water
75. truction manual Keep it on the side of the water heater or nearby for future reference e Do obtain new warning and instruction labels for placement on the blanket directly over the existing labels TEMPERATURE PRESSURE RELIEF VALVE A WARNING e Temperature pressure relief valve must comply with ANSI Z21 22 and ASME code e Properly sized temperature relief valve must be installed in opening provided e Failure to install relief valve can result in overheating and exces sive tank pressure e Failure to follow these instructions can cause serious injury or death This water heater is provided with a properly rated sized and 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 221 22 CSA 4 4 and the code requirements of ASME If replaced the new valve must meet the requirements of local codes but not less than a combination temperature and pressure relief valve rated sized and certified as indicated in the above paragraph The new valve must be marked with a maximum set pressure not to exceed the marked hydrostatic working pressure of the water heater 150 psi 1 035 kPa and a discharge capacity not less than the water heater Btu hr or KW input rate as shown on
76. ts 33 OTHER SCALE REMOVAL 1 Flush cleaned ends of elements with water when deliming or cleaning is completed Remove sediment and scale from the tank bottom through the access provided by the element openings or drain valve opening e The cold water inlet valve and drain valve may be opened to aid the cleanout process Clean remaining gasket material from tank and element flanges Do not reuse original element gaskets Put new gaskets on each element and install into tank openings e Uniformly tighten element bolts Torque to approximately 32 ft Ibs Attach element wires to connection points from which they were removed Follow FILLING instructions to restore hot water service e Check for water leaks around elements and proper operation when heater is filled e Close the front panel CHECKLIST Before calling for service check the following points to see if the cause of trouble can be identified and corrected Reviewing this checklist may eliminate the need of a service call and quickly restore hot water service See Figure 2 and Figure 3 in this manual to identify and locate water heater components A WARNING e Before removing any access panels or servicing the water heater make sure the electrical supply to the water heater is turned OFF Failure to do this could result in death serious bodily injury or property damage NOT ENOUGH OR NO HOT WATER 1 Be certain the elect
77. uit with over current protection and disconnect switch The water heater should be grounded in accordance with national and local codes Voltage applied to the heater should not vary more than 5 to 10 of the model and rating plate marking for satisfactory operation Allowable Ampacities of Insulated Conductors Not more than three conductors in raceway cable or earth directly buried based on ambient temperature of 30 C 86 F Size Temperature Rating of Conductor See Table 310 13 a 140 F 167 F 185 F 194 F 140 F 167 F 185 F 194 F TYPES TYPES TYPES FEPW TA TBS RH RHW RH RHW SA AVB RUH RUH SIS FEP THW THW FEPB THWN THWN XHHW USE For ambient temperatures over 30 C multiply the ampacities shown above by the riate correction factor to determine the maximum allowable load current 159 176 The load current rating and the overcurrent protection for these conductors shall not exceed 15 amperes for 14 AWG 20 amperes for 12 AWG and 30 amperes for 10 AWG copper or 15 amperes for 12 AWG and 25 amperes for 10 AWG aluminum and copper clad aluminum For dry locations only See 75 C column for wet locations Table 3 12 Full Load Current in Amperes Element Wattage Number of Elements Single Phase Three Phase 480V Thermostats Table 4 AMPERAGE TABLE OVERCURRENT PROTECTION The tables above provides the total connected heating element load in amperes for branch circuit co
78. up menu The current Operating Mode either Normal Mode or Economy Mode is displayed beneath the day and time Discreet Menu Contact Information From the Desktop Screen press and hold down the middle unmarked Operational Button for 30 seconds and then release it This will launch a discreet menu where personalized contact information can be entered Installing contractors and or service agents can enter their company name and telephone number This contact information will be displayed displayed until the time clock has been initially set Day and Time with all Fault and Alert messages STATUS ICONS DESCRIPTION Water temperature in the tank has fallen Shaded area of the animated thermometer icon will rise and fall in response to water temperature in the storage tank as sensed from the immersion Temperature Probe ICON Water temperature in the tank has reached the Operating Set Point Shaded area of the animated thermometer icon will rise and fall in response to water temperature in the storage tank as sensed from the immersion Temperature Probe The control is unable to initiate a heating cycle This will happen whenever a Fault condition is detected by the control system or when either of the two Enable Disable circuits are open circuits The control system is in Heating Mode and has energized the electromagnetic contactor coils for at least one bank of heating elements This animated icon DOES NOT indicate current has been sensed
79. with pipe joint compound Contact a Qualified Service Agency as it is necessary to shut off electricity and drain tank to perform procedure 35 Where possible remove or lift top cover to examine threads of fittings installed into tank for evidence of leakage Correct fitting leaks as necessary Relief valve operation and leakage may be due to water expansion during heating cycle or foreign material on seat of valve If the valve is not piped to an open drain the released water could be mistaken for a leaking heater To check where threaded portion enters tank insert Q Tip or similar absorbent material between jacket opening and valve to swab spud area Remove valve if leak is indicated and repair with pipe joint compound Water on the side of the tank may be condensation due to the panel or insulation not being in place Water leaks at the elements may be due to 1 Defective elements which leak at terminals or through flange Replace element yt 2 Loose element gasket leak Tighten element with element wrench If leak continues remove element and discard gasket Clean gasket seating areas and reinstall element with new gasket Condensation and dripping may appear on pipes when inlet water temperature is low Pipe fitting may be leaking All water which appears at the heater bottom or on the surrounding floor may be caused by condensation loose connections or relief valve operation and leakage Do
80. 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 JIVICNOION AND CAF DRAIN VALVE D JALA This Instruction Manual covers two models of commercial 3 4 NPT electric water heaters OPENING DRE models and DVE models These two models are equipped from the factory with different controls DRE models are factory equipped with surface mounted thermostat ECO combination controls DVE models are factory equipped with an electronic control system DISPLAY FOR GE In this Instruction Manual DRE models are referred to as Surface Mount MODELS ONLY Control models In this Instruction Manual DVE models are referred to as Electronic Control models WATER OUTLET INLET OPENING CONDUIT OPENING Figure 1 EE 50 189 3 ToT cr Table 1 RECOVERY RATE IN GALLONS PER HOUR Temperature Rise F Standard BTU KW Input Hour 20 478 30 717 40 956 18 18 CO CH 208 CO Oo O17 BI NM NO N O OIN OO NIN OO NI
81. x 1 3 or more of the anode rod s length are visible lf the anode rod show signs of either or both it should be replaced NOTE Whether re installing or replacing the anode rod check for any leaks and immediately correct if found In replacing the anode 1 Turn off electric supply to the water heater 2 Shut off the water supply and open a nearby hot water faucet to depressurize the water tank 3 Drain approximately 5 gallons of water from tank Refer to Draining and Flushing for proper procedures Close drain valve 4 Remove old anode rod 5 Use Teflon tape or approved pipe sealant on threads and install new anode rod 6 Turn on water supply and open a nearby hot water faucet to purge air from water system Check for any leaks and immediately correct any if found 7 Restart the water heater as directed in this manual See the Repair Parts Illustration for anode rod location 32 FLUSHING THE WATER HEATER 1 Turn off the electrical supply to the water heater at the breaker or disconnect switch 2 Ensure the cold water inlet valve is open 3 Open a nearby hot water faucet and let the water run until the water is no longer hot Then close the hot water faucet 4 Connecta hose to the water heater drain valve and terminate it to an adequate drain 5 Ensure the drain hose is secured before and during the entire flushing procedure Flushing is performed with system water pressure applied to the wa
82. xplosion Hazard e Overheated water can cause watertank explosion e Properly sized temperature and pressure relief valve must be installed in opening provided SAFE INSTALLATION USE AND SERVICE 2 GENERAL SAFETY INFORMATION 3 TABLE OF CON TEN FO uuu l de tet etcetera eh eee eevee ae wees 4 INTRODUC TON isir sna uu a eres este Ae 4 Preparing for the New Installation 4 DIMENSIONS AND CAPACITIES DATA 5 APPROVALS EE 6 FEATURES AND COMPONENTS 7 8 LOCATING THE NEW WATER HEATER 9 INSTALLATION WEE 10 PRO CUINGG ADIY u u uuu u u u uu uuu uamata saka saka 10 l i EE 10 Mixing Valve Usage 10 Chemical Vapor Corrosion 10 Circulating PUMP uuu l u uuu un aaa dies 10 rte 10 Temperature Pressure Relief Valve 00nnnn00nnn0nnnn0111n0ni 10 11 Water Line CONNECTION 11 Closed Water System 11 Thermal EX Le EE 11 A EE 12 OPERATION E 19 EE CB 19 Filling the Water Heater 19 t LJ u u EN AE E EE AAA E 19 Draining the Water Heate

COMMERCIAL ELECTRIC WATER HEATERS

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