A.O. Smith BFM - 120 Introduction, About the appliance, What to do if you smell gas Regulations

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1 Introduction

1.1About the appliance

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1.2What to do if you smell gas

1.3Regulations

This manual describes how to install, service and use the BFM appliance. The BFM appliance is a gas-fired sealed boiler with a fan in the air supply. The parallel or concentric chimney connections are appliance-dependent. Possible installation types are C13 or C33. The information in this manual applies to the: BFM 30, BFM 50, BFM 80, BFM 100 and BFM 120.

The appliance has been manufactured and equipped in accordance with the European standard for gas-fired storage water heaters for the production of domestic hot water (EN 89). The appliances are therefore compliant with the European Directive for Gas Appliances, and and are entitled to bear the CE mark.

Warning

Read this manual carefully before starting up the water heater. Failure to read the manual and to follow the printed instructions may lead to personal injury and damage to the appliance.

Warning

If there is a gas smell:

No naked flames! No smoking!

Avoid causing sparks! Do not use any electrical equipment or switch, i.e. no telephones, plugs or bells!

Open windows and doors!

Shut off the mains gas supply valve!

Warn occupants and leave the building!

After leaving the building, alert the gas distribution company or your installation engineer.

As the (end) user, installation engineer or service and maintenance engineer, you must ensure that the entire installation complies, as a minimum, with the official local:

•building regulations;

•energy supplier's directives for existing gas installations;

•directives and technical guidelines for natural gas installations;

•safety requirements for low-voltage installations;

•regulations governing the supply of drinking water;

•regulations governing ventilation in buildings;

•regulations governing the supply of air for combustion;

•regulations governing the discharge of products of combustion;

•requirements for installations that consume gas;

•regulations governing indoor waste water disposal;

•regulations imposed by fire brigade, power companies and municipality.

Instruction manual BFM

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Contents Page Page More information Read this manual carefullyTrademarks LiabilityGis Table of contents Electrical diagram TroubleshootingPerforming maintenance Warranty certificateAbout the appliance IntroductionWhat to do if you smell gas Regulations Symbol Target group Maintenance Forms of notation Target groupsIntroduction Document Overview of thisChapter Target groups Description Gis General working Working principle of the appliancePrinciple Appliance Working principle of the appliance Appliances heating cycle Protection for the appliance Protection Description Water temperature protectionPressure switch Flame probe3 T&P valve Safety of the instal- lationUnvented installation Vented installationGis Packaging InstallationAir humidity and ambient temperature Air humidity and ambient temperatureWorking clearances InstallationMaximum floor load Water compositionTechnical specifica- tions Plan and elevation of the appliance Dimensions of the applianceUnit General and electrical specificationsDimens Description BFM100 BFM120 IonLP gas data G30 30 mbar butane Gas dataDescription Unit Natural gas G20 20 mbarInstallation diagram Installation diagramHot water side Water connections, VentedCold water side Recirculation pipeCirculation pipe Water connections, Unvented See C in the installation diagram 3.5 Installation diagramGas connection Circulation pipeAir supply and flue Introduction Installing chimney flue components for BFM 30, 50Subject Description Concentric wall flue terminal BFMConcentric roof flue terminal BFM 30, 50 Installing chimney flue components for BFM 100 C33 concentric roof flue terminal specifications BFM 30, 50Concentric wall flue terminal BFM100 M2000 MDV SCC C13 concentric wall flue terminal specifications BFM 100Concentric roof flue terminal BFM 100 Electrical connection 11 C33 concentric roof flue terminal specifications BFM 100Mains power Fan Alarm Off Connecting the mains powerGas control for BFM 30 through Checking the supply pressure and burner pressureGas control for BFM BFM BFM 30, 50, 80Conversion Conversion to a different gas categoryConversion to a different gas category Orifice replacementPage Conversion to a different gas category Filling Filling Draining Draining Draining unvented installationsDraining vented installations Gis Control thermostat ON/OFF switchControl panel Explanation of iconsControl panel Burner control reset buttonStatus of the appliance Error conditionsOperating modes Status of the appliance Starting the appliance Starting and runningAppliances heating cycle Starting and running Shutting the appliance down for a long period Shutting down the appliance for a brief period OFF modeShutting down Isolating the appliance from the mainsShutting down Control thermostat 7.5 Control thermostat TroubleshootingExplosive ignition Troubleshooting general errorsSymptom Cause Solution Remark Gas smell Water leakageSymptom Cause Solution Remark Insufficient hot water Troubleshooting insufficient hot waterTroubleshooting No hot water Cycle Symptom Cause Solution RemarkPage Introduction Preparation for maintenance Performing maintenanceChecking the anodes Descaling and cleaning the tankPerforming maintenance Water-side mainte- nance 12.3.1IMD-0235 R2 Checking the flue baffles Finalising mainte- nance Clean the burnersClean the orifices Gas-side mainte- nance 12.4.1Conditions for Instal- lation and use Warranty certificate13.1 General warranty 13.2 Tank warrantyWarranty certificate Electrical diagram Electrical diagram BFM Electrical DiagramOptional Components Electrical diagram Index Index 0306