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

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

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

Contents

MODELS STCE3-52/80/119 & ITCE3-52/80/119 Service HandbookCOMMERCIAL ELECTRIC WATER HEATERS Technical Support and PartsPage COMMERCIAL ELECTRIC WATER HEATER TABLE OF CONTENTSSERVICE MANUAL IMPORTANT SERVICE REMINDER QUALIFICATIONS - QUALIFIED SERVICE AGENTSERVICE WARNING INTRODUCTIONINSTRUCTION MANUAL TOOLS REQUIREDTHERMAL EXPANSION INSTALLATION CONSIDERATIONSCLOSED WATER SYSTEMS Grounding Power SupplyELECTRICAL REQUIREMENTS SERVICE PRECAUTIONS PRE SERVICE CHECKSWIRING CONNECTIONS SURFACE MOUNT CONTROL MODELS HEATING ELEMENT CONFIGURATIONSWATER HEATER CONSTRUCTION ELECTRONIC CONTROL MODELSSURFACE MOUNT CONTROL MODELS WATER HEATER CONSTRUCTIONELECTRONIC CONTROL MODELS WATER HEATER CONSTRUCTIONVoltage OPERATION & SERVICEPRINCIPLES OF ELECTRICITY AmperageCalculating Amps/Ohms/Volts/Watts Ohms Law applied to “SINGLE PHASE” 1Ø powerOhms Law SINGLE AND THREE PHASE POWER L1 L2 L3277 Volt 1Ø Power Checking Single Phase 1Ø PowerPower Distribution Block 208/240/480 Volt 1Ø Power2 L2 and L3 terminals of the water heater’s Power Distribution Block Checking Three Phase 3Ø Power1 L1 and L2 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 Single Phase to Three Phase PHASE CONVERSIONS - SURFACE MOUNT CONTROL MODELSSurface Mount Control Models Three Phase to Single Phase L1 L2 L3Electronic Control Models Single Phase to Three Phase PHASE CONVERSIONS - ELECTRONIC CONTROL MODELSElectronic Control Models Three Phase to Single Phase L1 L2 L3Volt Meter Method FUSESOhm Meter Method SURFACE MOUNT THERMOSTATS Thermostat & ECO Test OPERATION & SERVICEWire conductor inside tube HEATING ELEMENTSHeating Element Construction Heating Element Ratings Heating Element ConfigurationsNUMBER OF FACTORY INSTALLED TOTALAPPROXIMATE CURRENT - AMPS Heating Element AmperageELEMENT 208 VACHeating Element Amperage Test Heating Element Voltage Test Heating Element Resistance & Ground Tests Measuring ResistanceOPERATION & SERVICE Heating Element Ground TestReplacing Heating Elements Element Sensor ELEMENT SENSORSElement Sensor Construction Three Current Sensors Element Sensor FunctionsElement Sensor Operation CONTACTORS Contactor Construction - How They WorkElement Numbers/Connections Wire Colors to Elements Contactor ConfigurationsPower Connection Terminals ContactorsContactor Inspection Physically Operate MechanicalContactor Coil Voltage - At Contactor Contactor Coil Voltage - At CCB TRANSFORMERS 120 VAC Control Circuit Transformer WiringX1 120 VAC H1 H2 H3 H4 H5 N/A Primary Winding Secondary WindingPrimary Winding Voltage Test 120 VAC Control Circuit Transformer TestOPERATION & SERVICE Secondary Winding Voltage TestPrimary Winding Voltage Test 24 VAC Transformer TestOPERATION & SERVICE Secondary Winding Voltage TestTemperature Sensor IMMERSION TEMPERATURE PROBEECO High Temperature Limit Switch OPERATION & SERVICE Temperature Sensor Resistance TestTemperature Sensor Resistance Data Checking Temperature Sensor ResistanceOPERATION & SERVICE Temperature Sensor DC Voltage TestECO Continuity Test DC Voltage To Temperature Sensor120 VAC To ECO ECO Voltage TestOPERATION & SERVICE 120 VAC From ECOELECTRONIC CONTROLS UIM User Interface Module CCB Central Control BoardCCB - CENTRAL CONTROL BOARD J3 Wiring Terminals - Alarm Output Relay see page CCB Socket & Wiring Terminal IdentificationJ2 Socket - 120 VAC Power Supply J4 Wiring Terminals - Contactor CoilsJ8 Socket - Not Used J9 Socket - Not Used J10 Socket - Not Used J7 Socket - Enable / Disable Circuits 1 & 2 see pages 45J16 Socket - Not Used J17 Wiring Terminals - Not Used J13 Socket - Heating Element Sensors BankCCB Enable/Disable Circuits Test Checking for Ground Checking Power and Ground To The CCBChecking for 120 VAC UIM Circuit Board Back Service Notes - Button Pad Ribbon CableUIM - USER INTERFACE MODULE UIM Circuit Board FrontCONTROL SYSTEM NAVIGATION CONTROL SYSTEM FEATURESELECTRONIC CONTROL SYSTEM UIM - User Interface ModuleTHE DESKTOP SCREEN ICON Table 1 Status IconsELECTRONIC CONTROL SYSTEM DESCRIPTIONELECTRONIC CONTROL SYSTEM Table 2 - Operating StatesTable 3 - Control System Menus STATETank Temperature TEMPERATURES MENUDifferential Settings Operating Set PointTemperature Settings Alarm Relay Output Enable / Disable 1Alarm Condition HEATER STATUS MENUHeater In Economy Mode ECONOMY MODE SETUP MENUSetpoint Adjustment Desktop Screen During Economy Mode Economy Mode Setup MenuACTION Economy Mode Settings Setpoint Adjustment ValueELECTRONIC CONTROL SYSTEM DISPLAYACTION Economy Mode Settings Time Clock SettingsELECTRONIC CONTROL SYSTEM DISPLAYELECTRONIC CONTROL SYSTEM Economy Mode Settings Daily Operating Mode SettingsEconomy Mode All Day ACTIONAlarm SP ALARM OUTPUT SETUP MENUTemp Alarm SP Used for external Alarm Output SettingsBacklight Delay DISPLAY SETTINGS MENUTemperature Units Display SettingsTotal Heating Time HEATER INFORMATION MENUElapsed Time Bank # CyclesFAULT OCCURRENCE MENU CURRENT FAULT / ALERT MENUFAULT HISTORY MENU Main Menu - Current Fault Selected Fault History MenuFactory Default User Settings RESTORE FACTORY DEFAULTS MENURestore Factory Defaults No Hot Water TROUBLESHOOTINGCOMMON SERVICE PROBLEMS Not Enough Hot WaterCONTROL SYSTEM UNRESPONSIVE Fault ConditionsResetting Control System Alert ConditionsUIM is Inoperable Heating Cycle DisabledControl System Unresponsive cont TROUBLESHOOTINGFAULT AND ALERT MESSAGES “No Current Detected”“Temp Probe Short” Fault & Alert Messages“Temp Probe Open” TROUBLESHOOTING “Energy Cut Out ECO”Fault & Alert Messages Fault ConditionPage Page Page Page Technical Support and Parts