A.O. Smith BFC - 80 Parallel connections, Practical example of parallel flue gas discharge

Page 31

is

3.9.4Parallel connections

The table states the maximum pipe lengths for parallel systems. The maximum pipe length depends on the chosen diameter.

Warning

Install flue component pipe runs with a run-off of 5 mm per metre.

Table of pipe lengths

 

 

 

 

 

 

 

 

Appliance

Diameter1

Maximum

Lequivalent

Lequivalent

 

 

total length

90° bend

45° bend

BFC 80

130mm

115m

2.4m

1.4m

 

 

 

 

 

BFC 100

130mm

60m

2.4m

1.4m

 

 

 

 

 

BFC 80

150mm

115m

2.6m

1.6m

 

 

 

 

 

BFC 100

150mm

100m

2.6m

1.6m

 

 

 

 

 

1) Parallel systems with diameter of 130mm or 150mm. If the maximum total

length for a diameter of 130mm is insufficient, 150mm diameter should be

used. Any diameter enlargement must be carried out on both air supply and

flue gas discharge.

 

 

 

You must use the longest pipe when calculating the pipe length. For example, if the chimney pipe is 35 metres and the air supply pipe is 32 metres, then 35 metres should be taken as the length for calculation. Next, add the Lequivalent for every 90° and 45° bend to this 35 metres, in both the air supply and flue gas discharge. The following practical example illustrates how to use the table.

Practical example of parallel flue gas discharge

Example

The figure shows a BFC 100 installation. This has to be fitted with a 35m parallel pipe 130mm in diameter plus eight 90° bends. We need to check whether this configuration complies with the requirements stated in the table.

Instruction manual BFC

31

Page 30 Page 32
Image 31
Page 30 Page 32
Contents 100 Your installer More information Read this manual carefullyTrademarks LiabilityGis Table of contents Performing maintenance Service programTroubleshooting Maintenance frequencyAppendices Table of contents About the appliance IntroductionWhat to do if you smell gas Regulations Symbol Target group Target groups Maintenance Forms of notationIntroduction Document Overview of thisChapter Target groups Description Gis General working principle of the appliance Working principle of the applianceAppliances heating cycle Protection for the appliance Water temperature protection TheGas valveWorking principle of the appliance 4 Fan Water temperature protectionPressure switch Gas valveFlame probe Safety of the installationUnvented installation Vented installationConditions InstallationPackaging EnvironmentalWorking clearances Air humidity and ambient temperatureMaximum floor load Water compositionTechnical specifications Dimensions of the appliance Dimen Description BFC Sion General and electrical specificationsUnit BFC Description II2H3P Unit BFC Natural gas Gas dataInstallation diagram Circulation pipe Water connections, VentedCold water side Hot water sideWater connections, Unvented Air supply and flue Introduction Gas connectionRequirements for flue gas discharge materials C43 B23 C33 C13 C53 Appliance Diameter Maximum length Number Bends Concentric connectionsPractical example of concentric flue gas discharge Type of appliance DescriptionAppliance with concentric flue gas discharge material SpecificationsSubject Description Concentric wall flue terminal specifications C13Practical example of parallel flue gas discharge Parallel connectionsElectrical connection Preparation Connecting the mains voltagePreparation Isolating transformer Connecting the mains voltage10.2 Preparation Checking the supply pressure and burner pressure Connecting a program-controlled pumpConnecting an extra on mode switch Tank on Connecting an extra error signal Alarm OUT11.1 Procedure to check pressuresGas data Finish off 3.11.4 Finalising Adjusting the pressure11.3 FinalisingConversion to a different gas category Orifice assemblyStart 9 Starting and running the appliance Conversion to a different gas categoryFilling 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 connectionStatus of the appliance Operating modes Error conditions Service conditionOperating 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 Notational convention for menu-related instructions Switching on the on modeSetting water temperature during on mode Main menuMain menu Week program setting the switch- on timeStarting and stopping the week program Changing the appliances standard week programAdding times to a week program Week program setting the switch- off timeWeek program setting the water temperature Week program setting the program- controlled pumpDeleting times from a week program Pump 11.6.4 Week program setting the program-controlled pumpExtra period Setting the switch-on timeProgramming an extra period Setting menu language SettingsDisplaying appliance specifications Setting day and timeRelevant display appears Setting the hysteresis Service programDisplaying the error history Setting the display backlight time Switching the pump on or offSetting the service interval Setting the display contrastGeneral errors TroubleshootingDisplayed 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 supplyDisplayed 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 RemarkReplaced Flue 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 errorE03 lock-out error Code + Description Cause Solution Remark E01 blocking errorE04 lock-out error Interval Maintenance frequencyMaintenance frequency Introduction Preparation for maintenance Performing maintenancePerforming maintenance Descaling and cleaning the tank Water-side maintenance IntroductionChecking the anodes Clean the orifices Cleaning condensation water dischargeGas-side maintenance Finalizing maintenance Introduction Clean the burnersConditions for Installation and use Warranty certificate16.1 General warranty 16.2 Tank warrantyWarranty certificate Week program card AppendicesAppendices BFC Electrical DiagramTerminal Block Connections Appendices Example Period Week program cardPeriod Tset PumpPage Index Index 0308

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.
Top Page Image Contents