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American Water Heater ITCE3-52/80/119, STCE3-52/80/119, COMMERCIAL ELECTRIC WATER HEATERS manual

Models: ITCE3-52/80/119 COMMERCIAL ELECTRIC WATER HEATERS STCE3-52/80/119

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American Water Heater ITCE3-52/80/119, STCE3-52/80/119, COMMERCIAL ELECTRIC WATER HEATERS manual

Contents

COMMERCIAL ELECTRIC WATER HEATERS Service HandbookMODELS STCE3-52/80/119 & ITCE3-52/80/119 Technical Support and PartsPage SERVICE MANUAL TABLE OF CONTENTSCOMMERCIAL ELECTRIC WATER HEATER SERVICE WARNING QUALIFICATIONS - QUALIFIED SERVICE AGENTIMPORTANT SERVICE REMINDER INTRODUCTIONTOOLS REQUIRED INSTRUCTION MANUALCLOSED WATER SYSTEMS INSTALLATION CONSIDERATIONSTHERMAL EXPANSION ELECTRICAL REQUIREMENTS Power SupplyGrounding WIRING CONNECTIONS PRE SERVICE CHECKSSERVICE PRECAUTIONS WATER HEATER CONSTRUCTION HEATING ELEMENT CONFIGURATIONSSURFACE MOUNT CONTROL MODELS ELECTRONIC CONTROL MODELSWATER HEATER CONSTRUCTION SURFACE MOUNT CONTROL MODELSWATER HEATER CONSTRUCTION ELECTRONIC CONTROL MODELSPRINCIPLES OF ELECTRICITY OPERATION & SERVICEVoltage AmperageOhms Law Ohms Law applied to “SINGLE PHASE” 1Ø powerCalculating Amps/Ohms/Volts/Watts L1 L2 L3 SINGLE AND THREE PHASE POWERPower Distribution Block Checking Single Phase 1Ø Power277 Volt 1Ø Power 208/240/480 Volt 1Ø Power1 L1 and L2 terminals of the water heater’s Power Distribution Block Checking Three Phase 3Ø Power2 L2 and L3 terminals of the water heater’s Power Distribution Block 3 L1 and L3 terminals of the water heater’s Power Distribution BlockSurface Mount Control Models Three Phase to Single Phase PHASE CONVERSIONS - SURFACE MOUNT CONTROL MODELSSurface Mount Control Models Single Phase to Three Phase L1 L2 L3Electronic Control Models Three Phase to Single Phase PHASE CONVERSIONS - ELECTRONIC CONTROL MODELSElectronic Control Models Single Phase to Three Phase L1 L2 L3Ohm Meter Method FUSESVolt Meter Method SURFACE MOUNT THERMOSTATS OPERATION & SERVICE Thermostat & ECO TestHeating Element Construction HEATING ELEMENTSWire conductor inside tube NUMBER OF FACTORY INSTALLED Heating Element ConfigurationsHeating Element Ratings TOTALELEMENT Heating Element AmperageAPPROXIMATE CURRENT - AMPS 208 VACHeating Element Amperage Test Heating Element Voltage Test Measuring Resistance Heating Element Resistance & Ground TestsReplacing Heating Elements Heating Element Ground TestOPERATION & SERVICE Element Sensor Construction ELEMENT SENSORSElement Sensor Three Current Sensors Element Sensor FunctionsElement Sensor Operation Contactor Construction - How They Work CONTACTORSPower Connection Terminals Contactor ConfigurationsElement Numbers/Connections Wire Colors to Elements ContactorsPhysically Operate Mechanical Contactor InspectionContactor Coil Voltage - At Contactor Contactor Coil Voltage - At CCB X1 120 VAC 120 VAC Control Circuit Transformer WiringTRANSFORMERS H1 H2 H3 H4 H5 N/A Primary Winding Secondary WindingOPERATION & SERVICE 120 VAC Control Circuit Transformer TestPrimary Winding Voltage Test Secondary Winding Voltage TestOPERATION & SERVICE 24 VAC Transformer TestPrimary Winding Voltage Test Secondary Winding Voltage TestIMMERSION TEMPERATURE PROBE ECO High Temperature Limit SwitchTemperature Sensor Temperature Sensor Resistance Data Temperature Sensor Resistance TestOPERATION & SERVICE Checking Temperature Sensor ResistanceECO Continuity Test Temperature Sensor DC Voltage TestOPERATION & SERVICE Checking ECO Switch ContinuityOPERATION & SERVICE ECO Voltage Test120 VAC To ECO 120 VAC From ECOUIM User Interface Module CCB Central Control Board ELECTRONIC CONTROLSCCB - CENTRAL CONTROL BOARD J2 Socket - 120 VAC Power Supply CCB Socket & Wiring Terminal IdentificationJ3 Wiring Terminals - Alarm Output Relay see page J4 Wiring Terminals - Contactor CoilsJ16 Socket - Not Used J17 Wiring Terminals - Not Used J7 Socket - Enable / Disable Circuits 1 & 2 see pages 45J8 Socket - Not Used J9 Socket - Not Used J10 Socket - Not Used J13 Socket - Heating Element Sensors BankCCB Enable/Disable Circuits Test Checking for 120 VAC Checking Power and Ground To The CCBChecking for Ground UIM - USER INTERFACE MODULE Service Notes - Button Pad Ribbon CableUIM Circuit Board Back UIM Circuit Board FrontELECTRONIC CONTROL SYSTEM CONTROL SYSTEM FEATURESCONTROL SYSTEM NAVIGATION UIM - User Interface ModuleTHE DESKTOP SCREEN ELECTRONIC CONTROL SYSTEM Table 1 Status IconsICON DESCRIPTIONTable 3 - Control System Menus Table 2 - Operating StatesELECTRONIC CONTROL SYSTEM STATETEMPERATURES MENU Differential SettingsOperating Set Point Tank TemperatureTemperature Settings Alarm Condition Enable / Disable 1Alarm Relay Output HEATER STATUS MENUSetpoint Adjustment ECONOMY MODE SETUP MENUDesktop Screen During Economy Mode Economy Mode Setup Menu Current TimeELECTRONIC CONTROL SYSTEM Economy Mode Settings Setpoint Adjustment ValueACTION DISPLAYELECTRONIC CONTROL SYSTEM Economy Mode Settings Time Clock SettingsACTION DISPLAYELECTRONIC CONTROL SYSTEM Economy Mode Settings Daily Operating Mode SettingsACTION DISPLAYTemp Alarm SP Used for external ALARM OUTPUT SETUP MENUAlarm SP Alarm Output SettingsDisplay Settings DISPLAY SETTINGS MENUTemperature Units Backlight DelayElapsed Time HEATER INFORMATION MENUTotal Heating Time Bank # CyclesFAULT HISTORY MENU CURRENT FAULT / ALERT MENUFAULT OCCURRENCE MENU Main Menu - Current Fault Selected Fault History MenuRestore Factory Defaults RESTORE FACTORY DEFAULTS MENUFactory Default User Settings COMMON SERVICE PROBLEMS TROUBLESHOOTINGNo Hot Water Not Enough Hot WaterResetting Control System Fault ConditionsCONTROL SYSTEM UNRESPONSIVE Alert ConditionsControl System Unresponsive cont Heating Cycle DisabledUIM is Inoperable TROUBLESHOOTING“No Current Detected” FAULT AND ALERT MESSAGES“Temp Probe Open” Fault & Alert Messages“Temp Probe Short” Fault & Alert Messages “Energy Cut Out ECO”TROUBLESHOOTING Fault ConditionPage Page Page Page Technical Support and Parts