A.O. Smith SGE service manual Performing maintenance, Introduction Preparation for maintenance

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15Performing maintenance

15.1 Introduction

15.2Preparation for maintenance

Caution

Maintenance may only by carried out by an approved service and maintenance engineer.

At each service, the appliance undergoes maintenance on both the water side and the gas side. The maintenance must be carried out in the following order.

1.Preparation for maintenance

2.Water-side maintenance

3.Gas-side maintenance

4.Solar collector maintenance

5.Finalizing maintenance

Note

Before ordering spare parts, it is important to write down the appliance type and model, and the full serial number of the appliance. These details can be found on the rating plate. Only by ordering with this information can you be sure to receive the correct spare parts.

To test whether all components are still working properly, complete the following steps:

1.Activate the MENU with .

2.Use: and to place the cursor beside OFF.

3.Confirm OFF with .

MENU »OFF ^ ON

ÈWEEK PROGRAM

4.Wait until the fan has stopped. The icon is then dimmed.

Caution

Failure to wait until the fan stops purging can cause damage to the appliance.

5.Switch the appliance OFF (position 0) using the ON/OFF switch on the control panel.

Instruction manual SGE

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Contents Installation User Your installer Trademarks Read this manual carefullyLiability More informationGis Table of contents Troubleshooting Service programMaintenance frequency Status of the appliancePerforming maintenance Warranty certificateAppendices Table of contents Introduction About the applianceWhat to do if you smell gas Regulations Target groups Maintenance Forms of notation Symbol Target groupIntroduction Chapter Target groups Description Overview of this documentGis Working principle of the appliance Introduction General working principle of the applianceTopics covered in this chapter Other settings that govern the control behaviour are Appliances heating cycleWorking principle of the appliance Appliance water temperature protection Gas valve = time = Temperature 45 oC = Minimum tap water temperaturePressure switch Flame probe Protection for the appliance IntroductionPressure switch Appliance water temperature protectionGas valve 4 FanUnvented installation Safety of the installationVented installation Flame probeSafety of the solar heating system Expansion vessel Fluid temperatureExpansion valve Pump of the solar heating systemPackaging InstallationEnvironmental ConditionsAir humidity and ambient temperature Appliance maximum floor loadWater composition Working clearances Dimensions of the appliance Technical specificationsAppliance is supplied without accessories. Check See the tableDime Description SGE Nsion Gas data General and electrical specificationsGas category 3+ G31 37 mbar Installation diagram Water connections, Unvented Cold water side See C in the installation diagram 3.5 Installation diagramHot water side Circulation pipeCondensation drainage Water connections, VentedAir supply and flue Introduction Gas connectionRequirements for flue gas discharge materials This section covers the following subjectsTypes of appliances Concentric connections Specifications Following example illustrates how to use the tablePractical example of concentric chimney flue Subject Description Parallel connectionsAppliance Diameter Maximum Total length BendAppliance with parallel flue gas discharge material Practical example of parallel chimney flueConnecting communication cable to solar heating system Preparation Connecting the mains voltageSolar heating system Electrical connectionPreparation 11.2Connecting continuous pump Connecting the mains voltageIsolating transformer 11.2 PreparationConnecting an extra on mode switch Tank on Connecting a program-controlled pumpConnecting an extra error signal Alarm OUT Connecting extra head pump Connecting Q/T sensorConnecting the mains power Connecting pump station modulating pumpConnecting solar collector Connecting communication cable Connecting tank sensorConnecting extra head pump Connecting Q/T sensorChecking the supply pressure and burner pressure Procedure to check pressures Adjusting the pressure Gas dataFinish off 3.13.4 Finalising Finalising 13.4Conversion to a different gas category Orifice assemblyConversion to a different gas category Burner pressure regulator Blank plate Gas control connectorPage Conversion to a different gas category Filling Filling the appliance Filling unvented installations Filling vented installationsFilling Filling with glycol Flushing with waterGis Draining Draining Draining unvented InstallationsActivate the Menu with Position the cursor in front of OFFDraining vented installations Draining solar heating system Draining glycol-filled systemPosition the cursor in front of OFF Confirm OFF with Gis Control panel Electronic controller ON/OFF switchControls Meaning of iconsNavigation buttons PC connectionControl panel Operating modes Error conditions Service condition Status of the applianceOperating modes Error conditions Service conditionCollector temperature warning Q/T Sensor warningStarting and running Open 3.5 Installation diagram the manual gas valveStarting the appliance Starting the appliance Appliances heating cycleStarting and running Icon is activated Message PRE Purge appearsIcon is activated Message Ignition appears Shutting down Shut the appliance down for a brief period OFF modeShutting the appliance down for a long period Electrically isolating the applianceShutting down Set the water temperature via Switching on the on modeMain menu Notational convention for menu-related instructionsWeek program Setting water temperature during on modeStarting and stopping the week program Changing the appliances standard week programWeek program setting the switch- off time Week program setting the switch- on timeWeek program setting the water temperature Bring the cursor to SU Confirm withAdding times to a week program Week program setting the program- controlled pumpConfirm with Display shown in the figure will appear Scroll with to Start Operation Confirm withDeleting times from a week program Confirm with Or use to cancelExtra period To delete a period, proceed as followsSetting the switch-off time Setting the switch-on timeSetting the water temperature Setting the program-controlled pumpSetting menu language SettingsSetting day and time Adjustable settingsConfirm the minute setting with Displaying appliance specifications SGETable shows the correct settings Scroll with to Specifications Confirm withSetting the hysteresis Service programDisplaying the error history Appliance Default RangeSetting the service interval Switching the pump on or offSetting legionella prevention Switching legionella prevention on and offSetting the drain-back tank Solar heating system configurationSetting the heating fluid type in the solar heating system Setting the solar limit temperatureSetting the QT sensor yes/no Setting the central heating configurationReading the energy contribution of the solar heating system General errors TroubleshootingDisplayed errors Distinction is made betweenSymptom Cause Solution Remark Gas smell Troubleshooting table for general errorsDisplay is off Start the appliance up 9 Starting and runningExplosive ignition Symptom Cause Solution Remark Water leakageHot water supply Insufficient or absentSymptom Cause Solution Remark Troubleshooting table for displayed errors Displayed errors S11 blocking error Code + Description Cause Solution RemarkS12 blocking error S13 blocking errorCode + Description Cause Solution Remark S18 blocking error F01 blocking errorF02 lock out error Fails to work correctly Engineer Pressure switch not Code + Description Cause Solution Remark F03 lock out errorMaintenance 15.2 Preparation for maintenance. If there is ClosingF05 lock out error Code + Description Cause Solution Remark F04 lock out errorNo gas AreaF07 lock out error Code + Description Cause Solution Remark F06 lock out errorF08 lock out error Safety relay EngineerF11 blocking error Code + Description Cause Solution Remark F10 lock out errorC03 blocking error Code + Description Cause Solution Remark C02 lock out errorC04 blocking error Selected applianceTemperature Code + Description Cause Solution Remark E01 blocking errorE03 lock-out error E04 lock-out errorDisplayed warnings Best maintenance frequency can be determined Maintenance frequencyMaintenance, based on the number of burning hours Standard setting is 500 burning hoursMaintenance frequency Performing maintenance Introduction Preparation for maintenanceWait until the fan has stopped. The icon is then dimmed Performing maintenance Descaling and cleaning the tank Water-side maintenance IntroductionChecking the anodes Following steps must be carried out on the water sideGas-side maintenance Introduction Cleaning condensation water dischargeClean the burners Clean the orifices16.1 General warranty Warranty certificate16.2 Tank warranty Collector warranty Conditions for Installation and useWarranty certificate This appendix contains AppendicesMenu structure of the main menu 17.2 Menu structure Heating systemAppendices Menu structure101 Electrical diagram Electrical diagram for the applianceExtra error signal connection Extra on mode switchController 0/I switch Temperature sensor T1 topElectrical diagram, solar heating system Solar system electrical diagram legend 106 Period Week program cardTset Pump Example Period108 109 IndexIndex 0308