A.O. Smith BFC - 30, BFC - 60 Conversion to a different gas category, Orifice assembly

Page 39

is

4Conversion to a different gas category

Attention

The conversion may only by carried out by an authorised installation engineer.

If the appliance must operate on a family of gases (LP gas or natural gas) or other gas category than that for which the appliance has been set at the factory, the appliance will have be adapted using a special conversion kit.

Attention

You must check the supply pressure and burner pressure once the conversion is complete.

Orifice assembly

Legend

1.connector

2.gas coupling

3.air supply hose

4.pressure switch hose

5. gas/air distribution plate

6. stamped figures

Instruction manual BFC

39

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Image 39
Page 38 Page 40
Contents
Installation User Your installer More information Read this manual carefullyTrademarks LiabilityGis Table of contents Performing maintenance Service programTroubleshooting Maintenance frequencyAppendices Table of contents Introduction About the applianceWhat to do if you smell gas Regulations Target groups Maintenance Symbol Target groupIntroduction Gis Overview of this DocumentChapter Target groups Description Appliances heating cycle Safety of the installationWorking principle of the appliance General working principle of the applianceWorking principle of the appliance Water temperature protection TheGas valvePressure switch Flame probe Appliances heating cycle Protection for the appliance4 Fan Water temperature protectionPressure switch Gas valveFlame probe Safety of the instal- lationUnvented installation Vented installationConditions InstallationPackaging EnvironmentalWorking clearances Air humidity and ambient temperatureAppliance maximum floor load Water compositionWorking clearances Technical specifica- tions Dimensions of the applianceUnit BFC General and electrical specificationsDimen Description SionGeneral 3+ Gas dataDescription II2H3+ Unit Gas category 2H G20 20 mbarInstallation diagram Circulation pipe Water connections, UnventedCold water side Hot water sideWater connections, Vented Gas connection Air supply and flue IntroductionRequirements for flue gas discharge materials C43 B23 C33 C13 C53 Appliance Diameter Maximum length Number of 90º Bends Concentric connectionsPractical example of concentric flue gas discharge Type of appliance DescriptionAppliance with concentric flue gas discharge material SpecificationsSpecification Description Concentric wall flue terminal specifications C13Practical example of parallel flue gas outlet Parallel connectionsElectrical connection Preparation Connecting the mains voltagePreparation Connecting the mains voltage Isolating transformer10.2 Preparation Connecting an extra error signal Alarm OUT Connecting continuous pump Connecting a program-controlled pump Connecting an extra on mode switch Tank on11.1 Checking the supply pressure and burner pressureProcedure to check pressures Finish off 3.11.4 Finalising Adjusting the pressureFinalising Gas dataConversion to a different gas category Orifice assemblyConversion of gas control Conversion to a different gas categoryPage Conversion to a different gas category Filling Installation diagramFilling Filling unvented installationsFilling vented installations Filling the applianceDraining Draining Min Gis Meaning of icons Electronic controller ON/OFF switchControl panel ControlsControl panel PC connectionOperating modes Error conditions Service condition Status of the applianceOperating modes Menu 11 Main menu chapter Error conditionsManual 13 Troubleshooting Status of the applianceManual 14 Maintenance frequency Service conditionGis Starting and running Appliances heating cycle Open 3.5 Installation diagram the manual gas valveStarting and running Appliances heating cycleStarting and running Shutting the appliance down for a long period Shut the appliance down for a brief period OFF modeShutting down Electrically isolating the applianceShutting down Switching on the on mode Main menuNotational convention for menu-related instructions Changing the appliances standard week program Setting water temperature during on modeWeek program Starting and stopping the week programWeek program setting the switch- on time Week program setting the switch- off timeWeek program setting the water temperature Adding times to a week program Week program setting the program- controlled pumpExtra period Deleting times from a week programSetting the program-controlled pump Setting the switch-on timeSetting the switch-off time Setting the water temperatureAdjustable settings SettingsSetting menu language Setting day and timeDisplaying appliance specifications Service program Setting the hysteresisDisplaying the error history Setting the display backlight time Switching the pump on or offSetting the service interval Setting the display contrastTroubleshooting General errorsDisplayed errors Start the appliance up 9 Starting and running Troubleshooting table for general errorsSymptom Cause Solution Remark Gas smell Display is offInsufficient or absent Symptom Cause Solution Remark Water leakageExplosive ignition Hot water supplyTroubleshooting table for displayed errors Displayed errors S15 blocking error Code + Description Cause Solution Remark S12 blocking errorS13 blocking error S14 blocking errorCode + Description Cause Solution Remark F02 lock out error Check the values 2.4.5 Pressure switch Code + Description Cause Solution RemarkFlue Code + Description Cause Solution Remark F03 lock out errorMaintenance 15.2 Preparation for maintenance. If there is ApplianceF05 lock out error Code + Description Cause Solution Remark F04 lock out errorF09 lock out error Code + Description Cause Solution Remark F06 lock out errorF07 lock out error F08 lock out errorF11 blocking error Code + Description Cause Solution Remark F10 lock out errorSelected appliance Code + Description Cause Solution Remark C02 lock out errorC03 blocking error C04 blocking errorCode + Description Cause Solution Remark E01 blocking error E03 lock-out errorE04 lock-out error Page Interval Maintenance frequencyMaintenance frequency Introduction Preparation for maintenance Performing maintenancePerforming maintenance Descaling and cleaning the tank Water-side mainte- nance IntroductionChecking the anodes Cleaning the heat exchanger Finalizing mainte- nance Cleaning condensation water dischargeClean the burners Clean the orificesConditions for Instal- lation and use Warranty certificate16.1 General warranty 16.2 Tank warrantyWarranty certificate Appendices Electrical diagramAppendices Electrical diagramTerminal Block Connections Appendices Example Period Week program cardPeriod Tset PumpPage Index Index 0306
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