Manuals / A.O. Smith / Household Appliance / Water Heater

A.O. Smith BFC -100, BFC - 80 service manual Draining

Models: BFC - 80 BFC -100

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6

6.1Draining unvented installations

6.2Draining vented installations

Draining	gis

1. Activate the MENU with .

MENU »OFF ^ ON

ÈWEEK PROGRAM

2.Position the cursor in front of OFF.

3.Confirm OFF with .

4.Wait until the fan has stopped. The symbol 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.

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IMD-0423 R0

6.Isolate the water heater from the power supply by putting the isolator between the appliance and the mains power supply to position 0.

7.Shut off the gas supply (10).

8.Close the stop valve (11) in the hot water pipe.

9.Close the supply valve (4) in the cold water supply (A).

10.Open the drain valve (9).

11.Bleed the appliance (or installation) so that it drains completely.

1.Activate the MENU with .

2.Position the cursor in front of OFF.

3.Confirm OFF with .

4.Wait until the fan has stopped. The symbol 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.

44	Instruction manual BFC

Image 44

A.O. Smith BFC -100, BFC - 80 service manual Draining

Contents

100 Your installer Read this manual carefully TrademarksLiability More informationGis Table of contents Service program TroubleshootingMaintenance frequency Performing maintenanceAppendices Table of contents What to do if you smell gas Regulations IntroductionAbout the appliance Introduction Target groups Maintenance Forms of notationSymbol Target group Chapter Target groups Description Overview of thisDocument Gis Working principle of the appliance General working principle of the applianceWorking principle of the appliance Water temperature protection TheGas valveAppliances heating cycle Protection for the appliance Water temperature protection Pressure switchGas valve 4 FanSafety of the installation Unvented installationVented installation Flame probeInstallation PackagingEnvironmental ConditionsAir humidity and ambient temperature Maximum floor loadWater composition Working clearancesTechnical specifications Dimensions of the appliance Unit BFC General and electrical specificationsDimen Description BFC Sion Gas data Description II2H3P Unit BFC Natural gasInstallation diagram Water connections, Vented Cold water sideHot water side Circulation pipeWater connections, Unvented Requirements for flue gas discharge materials Gas connectionAir supply and flue Introduction C43 B23 C33 C13 C53 Concentric connections Practical example of concentric flue gas dischargeType of appliance Description Appliance Diameter Maximum length Number BendsSpecifications Appliance with concentric flue gas discharge materialConcentric wall flue terminal specifications C13 Subject DescriptionParallel connections Practical example of parallel flue gas dischargePreparation Connecting the mains voltage Electrical connectionPreparation 10.2 Preparation Connecting the mains voltageIsolating transformer Connecting a program-controlled pump Connecting an extra on mode switch Tank onConnecting an extra error signal Alarm OUT Checking the supply pressure and burner pressureProcedure to check pressures 11.1Gas data Gas dataAdjusting the pressure 11.3Finalising Finish off 3.11.4 FinalisingOrifice assembly Conversion to a different gas categoryConversion to a different gas category Start 9 Starting and running the applianceInstallation diagram FillingFilling unvented installations Filling vented installationsFilling the appliance FillingDraining Draining Min Gis Electronic controller ON/OFF switch Control panelControls Meaning of iconsPC connection Control panelOperating modes Operating modes Error conditions Service conditionStatus of the appliance Error conditions Manual 13 TroubleshootingStatus of the appliance Menu 11 Main menu chapterService condition Manual 14 Maintenance frequencyGis Open 3.5 Installation diagram the manual gas valve Starting and runningAppliances heating cycle Starting and running Appliances heating cycleStarting and running Shut the appliance down for a brief period OFF mode Shutting downElectrically isolating the appliance Shutting the appliance down for a long periodShutting down Switching on the on mode Setting water temperature during on modeMain menu Notational convention for menu-related instructionsWeek program setting the switch- on time Starting and stopping the week programChanging the appliances standard week program Main menuWeek program setting the switch- off time Week program setting the water temperatureWeek program setting the program- controlled pump Adding times to a week programPump 11.6.4 Week program setting the program-controlled pump Deleting times from a week programProgramming an extra period Setting the switch-on timeExtra period Settings Setting menu languageSetting day and time Displaying appliance specificationsRelevant display appears Displaying the error history Service programSetting the hysteresis Switching the pump on or off Setting the service intervalSetting the display contrast Setting the display backlight timeDisplayed errors TroubleshootingGeneral errors Troubleshooting table for general errors Symptom Cause Solution Remark Gas smellDisplay is off Start the appliance up 9 Starting and runningSymptom Cause Solution Remark Water leakage Explosive ignitionHot water supply Insufficient or absentDisplayed errors Code + Description Cause Solution Remark S12 blocking error S13 blocking errorS14 blocking error S15 blocking errorCode + Description Cause Solution Remark F02 lock out error Code + Description Cause Solution Remark Check the values 2.4.5 Pressure switchReplaced Code + Description Cause Solution Remark F03 lock out error Maintenance 15.2 Preparation for maintenance. If there isAppliance FlueCode + Description Cause Solution Remark F04 lock out error F05 lock out errorCode + Description Cause Solution Remark F06 lock out error F07 lock out errorF08 lock out error F09 lock out errorCode + Description Cause Solution Remark F10 lock out error F11 blocking errorCode + Description Cause Solution Remark C02 lock out error C03 blocking errorC04 blocking error Selected applianceE04 lock-out error Code + Description Cause Solution Remark E01 blocking errorE03 lock-out error Maintenance frequency IntervalMaintenance frequency Performing maintenance Introduction Preparation for maintenancePerforming maintenance Checking the anodes Water-side maintenance IntroductionDescaling and cleaning the tank Cleaning condensation water discharge Gas-side maintenance Finalizing maintenance IntroductionClean the burners Clean the orificesWarranty certificate 16.1 General warranty16.2 Tank warranty Conditions for Installation and useWarranty certificate Appendices Week program cardBFC Electrical Diagram AppendicesTerminal Block Connections Appendices Week program card PeriodTset Pump Example PeriodPage Index 0308 Index