A.O. Smith BFC -100, BFC - 80 service manual Performing maintenance

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15

Performing maintenance

s

 

n

 

min

 

 

0063

O

I

 

IMD-0423 R0

6.Switch the electronic controller ON by setting the ON/OFF switch to position I.

INTERNAL CHECK

The display will now show INTERNAL CHECK for about 10 seconds, and will then go to the main menu.

MENU »OFF ^ ON

ÈWEEK PROGRAM

7.Activate "ON mode" by going through the following steps:

-Press once on the blue arrow () to position the cursor beside ON,

then press .

-Confirm the selection START OPERATION with .

8.If there is no heat demand, increase Tset (11.3 "Setting the water temperature"). Note the original setting. Draw some hot water off to create heat demand.

9.Check whether the heating cycle runs correctly (9.3 "The appliance's heating cycle").

10.If you have adjusted Tset , return it to the desired value (11.3 "Setting the water temperature").

11.Remove the plastic cover on the top of the appliance.

12.Check the supply and burner pressure (3.11 "Checking the supply pressure and burner pressure"), and adjust them if necessary.

13.Check that all components of the chimney flue system are properly attached.

14.Check the pressure differential across the orifice plate of the pressure switch (see the table). If the pressure difference is too low, the heat exchanger must be cleaned (15.4.4 "Cleaning the heat exchanger").

Pressure switch pressure differential

Appliance

Observed pressure differential across the pressure switch

 

(Pa)

 

 

BFC 80

> 1005

 

 

BFC 100

> 1145

 

 

15.Test the operation of the overflow valve of the protected cold supply setup. The water should spurt out.

16.Test the overflow operation of the T&P valve. The water should spurt out.

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Instruction manual BFC

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Contents 100 Your installer Read this manual carefully TrademarksLiability More informationGis Table of contents Service program TroubleshootingMaintenance frequency Performing maintenanceAppendices Table of contents Introduction About the applianceWhat to do if you smell gas Regulations Target groups Maintenance Forms of notation Symbol Target groupIntroduction Overview of this DocumentChapter Target groups Description Gis Working principle of the appliance General working principle of the applianceWater temperature protection TheGas valve Appliances heating cycle Protection for the applianceWorking principle of 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 General and electrical specifications Dimen Description BFC SionUnit BFC Gas data Description II2H3P Unit BFC Natural gasInstallation diagram Water connections, Vented Cold water sideHot water side Circulation pipeWater connections, Unvented Gas connection Air supply and flue IntroductionRequirements for flue gas discharge materials 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 Connecting the mains voltage Isolating transformer10.2 Preparation 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 Adjusting 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 Error conditions Service condition Status of the applianceOperating modes 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 programSetting the switch-on time Extra periodProgramming an extra period Settings Setting menu languageSetting day and time Displaying appliance specificationsRelevant display appears Service program Setting the hysteresisDisplaying the error history Switching the pump on or off Setting the service intervalSetting the display contrast Setting the display backlight timeTroubleshooting General errorsDisplayed 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 applianceCode + Description Cause Solution Remark E01 blocking error E03 lock-out errorE04 lock-out error Maintenance frequency IntervalMaintenance frequency Performing maintenance Introduction Preparation for maintenancePerforming maintenance Water-side maintenance Introduction Descaling and cleaning the tankChecking the anodes 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

BFC - 80, BFC -100 specifications

A.O. Smith is a renowned name in the water heater industry, and its BFC series, which includes the BFC-100 and BFC-80 models, exemplifies their commitment to innovation and efficiency. These units are designed to meet the demanding needs of both residential and commercial applications, providing reliable hot water solutions.

The A.O. Smith BFC-100 and BFC-80 are distinguished by their high capacity and robust design. The BFC-100 model boasts a capacity of 100 gallons, while the BFC-80 is ideal for those requiring 80 gallons. This makes them suitable for larger households or commercial establishments where hot water demand can be significant.

One of the primary features of these models is their advanced heating technology. Both units utilize a high-efficiency burner that ensures rapid heating and minimal energy consumption. This means users benefit from shorter wait times for hot water, reducing overall energy costs. The BFC series is also equipped with a special flame retention head that enhances combustion efficiency and prolongs the lifespan of the unit.

In terms of construction, the BFC-100 and BFC-80 models are built with high-quality materials that enhance durability and resistance to corrosion. The tanks are insulated with high-density foam, which improves energy retention and helps maintain water temperature for longer periods. This is crucial for conserving energy and minimizing heating costs.

Safety is a top priority for A.O. Smith, and the BFC series reflects this commitment. Each unit comes with a range of safety features, including a temperature and pressure relief valve that prevents overheating and excessive pressure buildup. Additionally, they are designed to meet strict industry standards, ensuring peace of mind for users.

Installation of both models is straightforward, with flexible venting options that accommodate various building layouts. Whether you are upgrading an existing water heating system or installing a new one, the BFC series is designed to integrate seamlessly.

In summary, the A.O. Smith BFC-100 and BFC-80 are excellent options for those seeking reliable, efficient, and durable water heating solutions. With their impressive capacity, advanced heating technology, robust construction, and safety features, these models stand out in the market and are sure to meet the hot water needs of any household or commercial space. Whether for residential use or in a business setting, A.O. Smith’s BFC series represents quality and innovation in hot water heating.
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