State Industries SEH-200 User's Manual
Contents
1. 3 The Desktop Screen 0004 44000 9 INTRODUCTION 4 Temperatures Menu 12 Preparing for the Installation 4 Water Heater Status 14 ELECTRICAL 0200 00 5 Economy Mode Settings 16 18 General 5 Alarm Output Setup 19 Branch Circuit 5 Easter Tutors 19 Heater Circuits ees 9 Eault i Alert Men ss LL 20 enirn 5 Power NRI 5 ra esi tO aaa 20 WIRING DIAGRAMS nee Fault Occurence 4 442 20 TEMPERATURE REGULATION f 7 Restore Factory Defaults 21 High Temperature Limit Controls 7 TROUBLESHOOTING CHECKLIST 22 Thermostat Controls 064 000 0 7 Not Enough No Hot 22 Mixing A 7 8 VVaIer IS TOO FIOT 22 Temperature Adjustment 8 Water Heater Makes Strange Sounds 22 CONTROL SYSTEM OPERATION o2. Temperature Units 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 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 Top of Menu Heater Information Elapsed Time 7 days 18 hrs 35 mins Total Heating Time 2 days 46 mins 00000042 00000035 Cycle Count Element 1 Cycles Element 1 On Time 40 HELP Bottom of Menu Heater Information Element 2 On Time 1day 4hrs 44 mins Element 3 Cycles 00000025 Element 3 On Time 8 hrs 30 mins 0 00 0 00 HELP CCB Version UIM Version S kd 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 Element Cycles Total accumulated count of hea
3. CAUTION used without the safety alert CAUTION symbol indicates a potentially hazardous 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 other reproductive harm This appliance can cause low level exposure to some of the substances listed 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 and electrical supply are required in addition to electrical testing skills when performing service e ANSI 2223 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
4. 3 wig DIAGRAM 2 LARGE COMMERCIAL WIRE DIAGRAM 300 600V 3PH EQUIP GND ca I Y 1 T j 1 LLI UH PrE 6 O X FMR 120V SEC PRIMARY FUSES 300 600V 3 A OD 252 222 GE o 56 cc r 2 7 x R b 6 2 pore nep cde 842 T pee TET peste i ae ee epe mE eid Eana s 9 F g Ba b tt e EN z 1 1 I F HL rend sii TEMPERATURE REGULATION HIGH TEMPERATURE LIMIT CONTROLS ECO MIXING VALVES This water heater is equipped with an ECO energy cut off This switch is adjustable up to 190 degree F 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 the control system 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 can be reset as follows 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
5. should be cleaned Some of the electrical components of the water heater make sounds which are normal ie contactors will Click or snap as the heater starts and stops stote WATER HEATERS 500 Tennessee Waltz Parkway Ashland City TN 37015 Phone 800 365 0024 Parts 800 433 2545 Fax 800 644 9306 www statewaterheaters com Copyright 2010 A O Smith Corporation All rights reserved
6. 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 CONTROL SYSTEM NAVIGATION The UIM User Interface Module is located on the front cabinet ofthe water heater All operational information and user settings are displayed and accessed using the UIM The UIM includes five snap acting momentary user input buttons an Up Down and 3 Operational Buttons UIM User Interface Module MODEL INFORMATION Tank Temperature Operating Set Point Status Heating LCD Screen Information Display Area 114 F 120 F Up amp Down Buttons Navigate Menu Items Adjust User Settings Hj e Friday H e D 5 00 PM 22 Normal Mode MENU 3 Operational Buttons Navigate Menus Activate Adjustment Modes Update Cancel Changes 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 directly above each button on the LCD screen The function will change depending on what menu is currently di
7. At this point the contactors will be de energized 5 he 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 setpoint the control will automatically return to step 2 and repeat the heating cycle POWER CIRCUIT Power circuit wiring is type THHN or equivalent rated 600 volts 105 C sized as necessary The following wiring diagrams on page 6 are included in this manual to show typical arrangements of electrical components in the control and power circuits by voltage and phase characteristics They are to be used as a reference by the installer or servicer in performing their work An actual diagram of the water heater wiring is furnished with the water heater WIRING DIAGRAM DIAGRAM 1 LARGE COMMERCIAL WIRE DIAGRAM 208 240V 3PH EQUIP GND TO DISPLA OR IF SO EQUIPPED STD WIRING OPT L WIRING 24V X FMR CNTCTR S AlmBmalB 4 PE L 10 L o04 XFMR SEC REREH FUSE BLK H I Lee 4 SDI tu MES eA 5 m 4 TN 4 208 240
8. F the On Off sequencing of heating elements would be as follows TABLE 4 TURN OFF TEMP Element 1 120 F Tig 116 F Element 3 Element 2 Tank Temperature Non adjustable information display Current water temperature as sensed by the control system from immersion Temperature Probe Tank Probe Offset 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 canimprove the precision of temperature control in storage tank and at points of use This feature can also be used to compensate for building recirculation loops hot water returning to storage tank that may cause the heating cycle to terminate prematurely Temperature Settings The Operating Set Point and the Differential Settings are adjusted in the Temperatures Menu The following instructions explain how to adjust these user settings and navigate the control system menus ACTION DISPLAY From the Desktop Screen press the Operational Button underneath MENU to enter the Main Menu Notice how the text above the Operational Buttons on the display changes as you navigate
9. RERO 23 NIROL Thank You for purchasing this water heater Properly installed and maintained it should give you years of trouble free service Abbreviations Found In This Instruction Manual ANSI American National Standards Institute ASME American Society of Mechanical Engineers NEC National Electrical Code NFPA National Fire Protection Association PREPARING FOR THE INSTALLATION ile Read the General Safety 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 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 General outline diagrams are in this manual These diagrams will serve to provide the installer with a reference for basic installation of this product IT IS NECESSARY THAT ALL THE ELECTRICAL WIRING BE INSTALLED AND CONNECTED AS SHOWN IN THE DIAGRAMS Be sure to turn off power when working on or near the electrical system of the water heater Never touch electrical components with wet hands or when standing in water Wh
10. Setu b Alarm Output Setup Display Settings underneath SELECT to enter the Economy Mode Setup menu Economy Mode Setup Setpoint Adjustment 40 Current Time Wed 4 19 PM Use the Up Down buttons to select highlight in black Setpoint Heater In Economy Mode Adjustment Press the Operational Button underneath CHANGE to Normal All Day activate the adjustment mode for the Setpoint Adjustment value Normal All Day Normal All Day Normal All Day CHANGE BACK Use the Up Down buttons to change the Setpoint Adjustment to the Economy Mode Setup desired value The Setpoint Adjustment value is adjustable from 2 F to 50 F The factory default is 20 F Setpoint Adjustment 20 Current Time Wed 4 19 PM Notice how the text above the Operational Buttons on the display changes Heater In Economy Mode to UPDATE amp CANCEL when the adjustment mode is activated and Normal All Day how the current value is outlined rather than highlighted in black Normal All Day Normal All Day Press the Operational Button underneath UPDATE to enter and confirm the new value Pressing the Operational Button underneath CANCEL would discard the new value and retain the previous value Setpoint Adjustment Current Time Heater In Economy Mode Normal All Day Normal All Day Normal All Day Normal All Day CHANGE BACK The new Setpoint Adjustment value should now be displayed as the current value 16 ECONOMY MODE SETT
11. all closed water systems Refer to this manual for installation and service WARNING Flammable hydrogen gases may be present Keep all ignition sources away from faucet when turning on hot water WARNING 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 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 Feel water before bathing showering Temperature limiting valves are available Read instruction manual for safe temperature setting TABLE CONTENT This manual contains the operating instructions for the commercial electric Xi control It is intended to be used in conjunction with the water heater instruction manual SAFE INSTALLATION USE AND SERVICE 2 Heating Element 9 GENERAL SAFETY 3 Control System Features 9 milziss BITS NN 3 Control System Navigation 9 Hydrogen Gas
12. 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 NERAL SAFETY INFORMATION PRECAUTIONS DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER WATER Immediately call a qualified service technician to inspect the appliance 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 agency 1 External fire 2 Damage 3 Firing without water GROUNDING 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 Flammable hydrogen gases may be present 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 be
13. that satisfies the demand of the application a Mixing Valve should be installed at the water heater see Figure 2 or at the hot water taps to further reduce system water temperature Mixing valves are available at plumbing supply stores Consult a Qualified Installer or Service Agency Follow mixing valve manufacturer s instructions for installation of the valves Time to Produce 2nd amp 3rd Degree Burns Adult Skin 140 F 60 C I30 F 64 C FIGURE 1 Water Temperature 180 F 170 F 160 F 71 C 82 C 77 C TEMPERATURE REGULATION HOT WATER TEMPERED WATER OUTLET INLET FIGURE 1 TEMPERATURE ADJUSTMENT ADANGER Full power is present whenever the cabinet door is opened even with the pilot switch turned off The water heaters covered inthis instruction manual are equipped with an electronic control system The control system senses temperature from a factory installed immersion temperature probe 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 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 Control System Operation section of this manual for instructions on how to adjust t
14. Commercial Electric Xi Control Instruction Manual J VIVE MODELS SEV 150 THRU SEV 10000 stote SEH 200 THRU SEH 10000 WATER HEATERS UP TO 150KW 500 Tennessee Waltz Parkway Ashland City TN 37015 4 ig PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE PRINTED 0910 318579 000 AFE INSTALLATION RVI Your safety and the safety of others is extremely important in the installation use and servicing of this water heater Many safety related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard Read and obey all safety messages and instructions throughout this manual Itis 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 C d 8 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
15. 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 11 TEMPERATURES MENU Operating Set Point User adjustable setting 90 F to 190 F range factory default is 120 F When the water temperature sensed by the control system from the immersion Temperature Probe reaches the Operating Set Point the control system will end the heating cycle A call for heat will be activated again when the water temperature drops below the Operating Set Point minus the 1st Differential Setting Example Operating Set Point is 120 F the 1st Differential Setting is 2 F factory default A call for heat will be activated when the sensed water temperature drops to 118 F Temperatures Operating Set Point 1st Differential 2nd Differential 3rd Differential Tank Temperature Tank Probe Offset CHANGE a BACK Differential Settings Adjustable user setting s 1 F to 20 range factory default is 2 F The water heaters covered in this manual will have between 1 and 5 heating elements There is at least one Differential Setting on all models There will be additional Differential Settings for each additional heating element installed 12 Operating Sequence On a water heater equipped with 3 heating elements with an Operating Set Point of 120 F and all Differential settings at 2
16. INGS Time Clock Settings ACTION DISPLAY Economy Mode Setup Setpoint Adjustment Current Time Wed 4 19 PM Heater In Economy Mode 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 Operational 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 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 ne
17. activate the water temperature must drop below 120 F 49 C before the control system can be reset Once the water temperature has cooled below this point the power supply to the water heater must be turned off and on again to reset the control system 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 DANGER Feel water showering before bathing or Temperature available limiting valves are Read instruction manual for safe temperature setting 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 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 r
18. ays a brief description of the condition contact information and access to the Advanced service information sub menu Fault History Menu Fault History No Current Detected 40D 1days 5 hrs 45 mins ago 2 Energy Cut Out 5 1 days 6 hrs 20 mins ago 3 Temp Probe Short 45 2days ihrs 10 mins ago 4 No Current Detected 40D 429 Current History Fault Message Temp Probe Short Fault occurred 14 mins ago There is a problem with the temperature probe Call a service professional Paul Stewart XXX XXX XXXX 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 LWCO Tank Temp Probe Powered Anode Fail CCB Hardware Model Faults 40 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 From the Main Menu use the Up Down buttons to select highlight in black the Restore Factory Defaults menu Pre
19. conomy Mode All Day Normal Operation Between Start 7L 00 PM Stop 8 00 PM CANCEL Monday Normal Operation All Day Economy Mode All Day Normal Operation Between Start 7 30 A Stop 8 00 PM Sending Updates to CCB BACK Economy Mode Setup Setpoint Adjustment 20 Current Time Mon 5 00 PM Heater In Economy Mode No Economy Mode All Day Normal 7 30 AM to 8 00 PM Normal All Day Normal All Day CHANGE BACK 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 see wiring diagrams Alarm output relay contacts are capable of switching 1 amp maximum at 120 VAC Alarm Output Setup Alarm SP CHANGE BACK Alarm SP CHANGE BACK 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 Output Function Adjustable user setting Available options for the Alarm Output Function setting are Heating Mode Used for heating mode on off status notificatio
20. d There is a plug with two jumper wires installed from the factory in the 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 14 Element On Displays the on off status of each heating element Yes On No Off Tank Full Displays the status of the optional LWCO Low Water Cut Off device Yes water level is acceptable No water level is low 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 see wiring diagrams 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 Desk
21. e heating elements to fail The installation must conform to these instructions and the local code authority having jurisdiction Grounding and electrical wiring connected to the water heater must also conform to the National Electrical Code NFPA 70 This publication is available from The National Fire Protection Association 1 Batterymarch Park Quincy MA 02269 BRANCH CIRCUIT The branch circuit wire size should be established through reference to the NEC National Electrical Code or other locally approved sources in conjunction with the water heater amperage rating Wire rated at 75 C should be used For convenience portions of the wire size tables from the Code are reproduced in Table 1 on page 9 It is suggested the electrician size the branch circuit at 125 percent of the heater rating and further increase wire size as necessary to compensate for voltage drop in long runs Voltage drop should not exceed 3 at the water heater HEATER CIRCUITS The water heater s electrical components are pictured and identified in the Features and Components illustrations in Diagrams 1 and 2 The model and rating plate provides heater circuit ratings There are two main electrical circuits Control Circuit Power supply for the electromagnetic contactor coils 120V power is supplied to the contactor coils by the CCB Central Control Board see wiring diagrams in this manual Power Circuit High voltage single or three phase circuit that ca
22. en replacing fuses always use the correct size for the circuit Use same size and type of fuse when replacing 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 code requirements follow NFPA 70 current edition The National Electrical Code may be ordered from National Fire Protection Association 1 Batterymarch Park Quincy MA 02269 If after reading this manual you have any questions or do not understand any portion of the instructions call the toll free number on the back cover for further assistance Installation and service of this water heater requires ability equivalent to that of a licensed tradesman or qualified agency page 2 in the field involved Plumbing and electrical work are required 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 FLECTRICAL DATA GENERAL Check the water heater model and rating plate information against the characteristics of the branch circuit electrical supply Do not connect the heater to an improper source of electricity Voltage applied to the water heater should not vary more than 5 to 10 of the model and rating plate marking for satisfactory operation Do NOT energize the branch circuit for any reason before the water heater tank is filled with water Doing so may cause th
23. en 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 understand 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 A WARNING Overheated water can cause watertank explosion e Properly sized temperature and pressure relief valve must be installed in opening provided CAUTION Improper Installation use and service may result in property damage Do not operate water heater if flood damaged 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
24. es the temperature in the tank has reached the y Operating Set Point and the control system has terminated the heating cycle The control system is in the Heating Mode At least one heating element has been energized 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 the water heater The control system has detected declared a Fault Condition The control system will discontinue heating operation and Fault 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 10 TABLE 3 CONTROL SYSTEM MENUS Most commonly accessed menu Operating Set Point Differential settings Tank Temperature and Tank Probe Offset are located in this menu Temperatures 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 Seven day 24 hour time clock with temperature set back capability to reduce operating costs during unoccupied gt reduced demand periods The control system s CCB Central Control Board see wiring diagrams features on board SPDT single pole double throw relay contacts for building EMS Energy Management Sy
25. even 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 Operation Between Only one Operating Mode can be active the factory default is Normal Operation All Day Normal Operation All Day When this operating mode is active the normal Operating Set Point is used for the entire day Economy Mode All Day When this operating mode is active the Economy Set Point is used for the entire day Normal Operation Between When this operating mode is active there will also be start and stop times to program The normal 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 the day There is one start time and one stop time event per day ECONOMY MODE SETTINGS Setpoint Adjustment Value ACTION DISPLAY MODEL INFORMATION Tank Temperature 120 F From the Desktop screen press the Operational Button underneath MENU to enter the Main Menu Operating Set Point 120 F Status Standby Notice how the text above the Operational Buttons on the display Friday changes 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 Heater Status Mode Setup menu from the Main Menu Press the Operational Button Econom Mode
26. he Main Menu where all control system menus are accessed See Table 3 on page 10 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 displayed until the time clock has been initially set Day and Time are adjusted in the Economy Mode Setup 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 with all Fault and Alert messages TABLE 1 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 Water temperature in the tank has reached the Operating Set Point Shaded area of the animated thermometer icon
27. he Operating Set Point and other user settings 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 MODEL INFORMATION Tank Temperature Operating Set Point Status Heating gis x 114 F 120 F Friday 5 00 PM Normal Mode ONTROL SYSTEM OPERATION HEATING ELEMENT OPERATION Progressive Sequencing Elements are energized and de energized according to adjustable 1 to 20 F Differential set points foreach element Element Rotation first element on is rotated with each successive call for heat First On First Off the first heating element energized at the beginning of a heating cycle is the first element de energized at the end of the heating cycle Successive heating cycles would progress as follows on a model equipped with 3 heating elements e First heating cycle Elements come on 1 2 3 and cycle off 1 2 3 e Second heating cycle Elements come on 2 3 1 and cycle off 2 3 1 e Third heating cycle Elements come on 3 1 2 and cycle off 3 1 2 Fourth heating cycle pattern repeats same as first 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
28. isk of scalds Some States require settings at specific lower temperatures See Figure 1 which shows the approximate time to burn relationship for normal adult skin DANGER 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 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 Water heated to a temperature which will satisfy clothes washing dish washing and other sanitizing needs can scald and cause permanent injury upon contact Short repeated heating cycles caused by small hot water uses can cause temperatures at the point of use to exceed the water heater s temperature setting by up to 20 F 11 C Some people are more likely to be permanently injured by hot water than others These include the elderly children the infirm and the physically mentally disabled Figure 1 shows the approximate time to burn relationship for normal adult skin If anyone using hot water provided by the water heater being installed fits into one of these groups or if there is a local code or state law requiring a certain water temperature at the point of use then special precautions must be taken In addition to using the lowest possible temperature setting
29. n 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 control s at the J7 socket on the CCB see wiring diagrams on page 6 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 Alarm SP function described above This setting has no effect with any other Alarm Output functions 19 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 DISPLAY SETTINGS MENU Permits user to set display options for viewing information on the UIM s LCD screen Display Settings Temperature Units oF Backlight Delay 30s Contrast 20 4 2
30. n 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 With each item selected press the Operational Button underneath CHANGE to activate the adjustment mode for each setting Use the Up Down buttons 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 Press the Operational Button underneath BACK when finished to confirm the new settings and update the control system The display will return to the Economy Mode Setup menu with the new settings shown for Mon 18 DISPLAY 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 Sunday Normal Operation All Day e Normal Operation Between Sending Updates to CCB SELECT BACK Economy Mode Setup Setpoint Adjustment 20 Current Time Mon 5 00 PM Heater In Economy Mode No Economy Mode All Day Normal All Day Normal All Day Normal All Day CHANGE BACK Monday Normal Operation All Day E
31. ny If the heater operates on a controlled circuit heater recovery may be affected The optional manual override switches on the cabinet front may be turned off de energizing the elements Check the fuses The electrical disconnect switch usually contains fuses The water heater has fuses located behind the cabinet front door 22 3 If the water was excessively hot and is now cold the ECO 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 Repeated activation of the ECO high limit switch should be investigated by a Qualified Service Agent The storage capacity and or recovery rate of the water heater may have been exceeded by a large demand for hot water Large demands require a recovery period to restore water temperature Cold incoming water temperature will lengthen the time required to heat water to the desired temperature If the heater was installed when incoming water temperature was warm colder water creates the effect of less hot water Sediment or lime scale may be affecting water heater operation WATER IS TOO HOT Refer to the TEMPERATURE REGULATION section of this manual WATER HEATER MAKES STRANGE SOUNDS 1 Sediment or lime scale accumulations on the elements causes sizzling and hissing noises when the heater is operating The sounds are normal however the tank bottom and elements
32. rries the heating element load The following section and pages describe the water heater circuits and includes wiring diagrams CONTROL CIRCUITS The water heater is equipped with an electronic control system The system includes a CCB Central Control Board circuit board an immersion temperature probe with ECO for temperature 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 Sequence of Operation 1 When the control is powered the UIM should display model information water temperature operating setpoint heating status and operating mode 2 Ifthe control determines that the actual water temperature inside the tank is below the programmed operating setpoint minus the 1st differential setpoint a call for heat is activated 3 After all safety checks are verified the CCB will energize the contactor coil s On models with more than one heating element the upper most heating elements are energized first Successive heating elements are energized according to programmed differential setpoints for each heating element 4 The control remains in the heating mode until the water temperature reaches the programmed operating setpoint
33. splayed 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 The illustration 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 the 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 Service Note The Desktop Screen displays text and animated icons that convey operational information Review the Status Icons explanation in Table 3 on page 10 Learning to use this real time visual display of the operating sequence will help to 2 quickly and accurately diagnose operational problems 114 F 120 F Tank Temperature Operating Set Point Status Heating Friday 5 00 PM Normal Mode STATUS ICONS Menu The left Operational Button is pressed to enter t
34. ss the Operational Button underneath SELECT The Restore Factory Defaults menu will be displayed From the Restore Factory Defaults menu press the Operational Button underneath YES The display will show text confirming the factory default settings have been restored Press the Operational Button underneath BACK to exit the Restore Factory Defaults menu 21 Main Menu Heater Information Current Fault 45 Fault History Fault Occurrence Restore Factory Defaults SELECT Restore Factory Defaults Are you sure you want to restore the system to factory defaults TROUBLESHOOTIN HECKLIST 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 A WARNING 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 BE SURE TO TURN OFF THE ELECTRICITY ELECTRICAL DISCONNECT SWITCH WHEN CHECKING EQUIPMENT NOT ENOUGH OR NO HOT WATER 1 Be certain the electrical disconnect switch serving the water heater is in the ON position The pilot toggle switch on the cabinet should be ON In some areas water heater electrical service may be limited by the power compa
35. st Differential 2nd Differential 2 F 3rd Differential 2 F Tank Temperature 105 F Tank Probe Offset O F Operating Set Point 1st Differential 2nd Differential 3rd Differential Tank Temperature Tank Probe Offset CHANGE WATER HEATER STATUS MENU This menu displays non adjustable operational information Use the Up amp Down Buttons to navigate to the bottom of this menu Top of Menu Heater Status Status Elements On ECO Contact Heating 1 Closed Closed Closed Enable Disable 1 Enable Disable 2 Element 1 On Element 2 On No 40 Bottom of Menu Heater Status Enable Disable 2 Element 1 On Element 2 On Element 3 On Tank Full Alarm Condition Alarm Relay Output BACK 4 o b HELP Status Displays the current Operating State of the control system IE Heating Standby Fault Elements On Displays the number of heating elements the control system has energized ECO Contact Displays the current state of the ECO high temperature limit switch contacts 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 on page 6 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 disable
36. stem notification of operational conditions such as Fault Conditions and heating mode status This menu features a list of user definable conditions for relay activation Alarm Output Setup Temperature units F or C appearance brightness contrast and backlight delay user adjustable settings are Display Settings located in this menu Elapsed time of operation total heating cycle time heating cycle count heating element s cycle count and on time along with CCB software revisions be viewed this menu Current Fault Alert Displays any current Alert or Fault messages Retains 9 event history of Fault Alert messages with time stamp The Fault History is useful when dealing with Fault History intermittent operational problems or when the customer has reset the control system prior to a service agent s arrival Total accumulated number each individual Fault condition has occurred is displayed in this menu This Fault Occurrence running total of Fault Occurrences can be useful in determining which if any operational problems have been persistent This control system feature allows the user to restore control system user settings to their factory default settings Alarm Output Setup and Display Settings menu items ARE NOT changed when factory defaults are restored Restore Factory Defaults Accessible by pressing the corresponding Operational Button from most menus and screen displays This menu
37. through the various menus and screens With Temperatures selected highlight in black in the Main Menu press the Operational Button underneath SELECT to enter the Temperature Menu If Temperatures is not selected use the Up and Down buttons to select this menu item With the Operating Set Point selected highlighted in black in the Temperatures Menu press the Operational Button underneath CHANGE to activate the adjustment mode for this menu item 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 This same procedure is used to change user settings in other control system menus MODEL INFORMATION Tank Temperature 120 F Operating Set Point 120 F Status Standby Friday 5 00 PM Normal Mode Main Menu Temperatures Heater Status Economy Mode Setup Alarm Output Setup Display Settings Temperatures Operating Set Point 120 F F 1st Differential 2nd Differential 3rd Differential Tank Temperature Tank Probe Offset CHANGE Temperatures Operating Set Point 140 F 1
38. ting cycles for each heating element Element On Time Total accumulated heating on time for each heating element CCB Version Software version for Central Control Board UIM Version Software version for User 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 4 2 b FAULT HISTORY MENU 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 A time 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 Alert message screen displ
39. top 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 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 Tue Normal All Day Wed CHANGE Normal All Day BACK 4 Hb 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 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 Note the time will not self adjust for Daylight Savings time Heater In Economy Mode Displays whether the control system is currently operating in Economy Mode or not 15 Daily Operating Mode Sun Mon Tue Wed Thu Fri Sat S
40. w settings should be displayed as the Current Time 17 Normal All Day Normal All Day Normal All Day Normal All Day CHANGE BACK Current Time Weekday Time 4 19 PM CHANGE BACK Current Time Weekday Monday Time 4 19 PM ACCEPT CANCEL Current Time Weekday Monday Time ERT CHANGE Economy Mode Setup Setpoint Adjustment Current Time Heater In Economy Mode Normal All Day Normal All Day Normal All Day Normal All Day CHANGE BACK ECONOMY MODE SETTINGS Daily Operating Mode Settings ACTION Economy Mode All Day From the Economy Mode Setup menu use the Up Down buttons to select highlight in black the Daily sub menu for Sun Press the Operational Button underneath CHANGE to enter this menu 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 factory default Normal Operation All Day setting to the Economy Mode All Day setting Press the Operational Button underneath BACK to confirm the new setting and update the control system You will be returned to the Economy Mode Setup menu The new setting should now be displayed for Sun Normal Operation Between From the Economy Mode Setup menu Use the Up Down and CHANGE buttons to enter the Mon sub menu as described above Use the Up Down buttons to select highlight in black the Normal Operatio
41. will rise and fall in response to water temperature in the storage tank as sensed from the immersion Temperature Probe ICON 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 heating element This animated icon DOES NOT indicate current has been sensed from the heating elements only that there is a call for heat present and the control system has initiated heating element operation 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 TABLE 2 OPERATING STATES STATE DESCRIPTION Standb The water heater is not in an active heating cycle This usually indicat
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