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A.O. Smith BFM - 120, BFM - 100 manual Electrical diagram, Introduction

Models: BFM - 100 BFM - 120

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14 Electrical diagram

14.1 Introduction

This chapter shows the electrical diagram(s) and accompanying legend.

Instruction manual BFM

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A.O. Smith BFM - 120, BFM - 100 manual Electrical diagram, Introduction

Contents

Page Page Trademarks Read this manual carefullyLiability More information Gis Table of contents Performing maintenance TroubleshootingWarranty certificate Electrical diagram Introduction About the applianceWhat to do if you smell gas Regulations Maintenance Forms of notation Target groups Symbol Target groupIntroduction Overview of this DocumentChapter Target groups Description Gis Working principle of the appliance General workingPrinciple Appliance Working principle of the appliance Appliances heating cycle Protection for the appliance Pressure switch Water temperature protectionFlame probe Protection Description Unvented installation Safety of the instal- lationVented installation 3 T&P valve Gis Air humidity and ambient temperature InstallationAir humidity and ambient temperature Packaging Maximum floor load InstallationWater composition Working clearances Technical specifica- tions Plan and elevation of the appliance Dimensions of the appliance Dimens Description General and electrical specificationsBFM100 BFM120 Ion Unit Description Unit Gas dataNatural gas G20 20 mbar LP gas data G30 30 mbar butane Installation diagram Installation diagram Cold water side Water connections, VentedRecirculation pipe Hot water side Circulation pipe Water connections, Unvented See C in the installation diagram 3.5 Installation diagram Gas connection Circulation pipe Air supply and flue Introduction Installing chimney flue components for BFM 30, 50 Subject Description Concentric wall flue terminal BFM Concentric roof flue terminal BFM 30, 50 Installing chimney flue components for BFM 100 C33 concentric roof flue terminal specifications BFM 30, 50 Concentric wall flue terminal BFM100 M2000 MDV SCC C13 concentric wall flue terminal specifications BFM 100 Concentric roof flue terminal BFM 100 Electrical connection 11 C33 concentric roof flue terminal specifications BFM 100 Mains power Fan Alarm Off Connecting the mains power Gas control for BFM 30 through Checking the supply pressure and burner pressure Gas control for BFM BFM BFM 30, 50, 80 Conversion Conversion to a different gas category Conversion to a different gas category Orifice replacementPage Conversion to a different gas category Filling Filling Draining Draining Draining unvented installations Draining vented installations Gis Control panel ON/OFF switchExplanation of icons Control thermostat Control panel Burner control reset button Error conditions Status of the applianceOperating modes Status of the appliance Starting and running Starting the applianceAppliances heating cycle Starting and running Shutting down Shutting down the appliance for a brief period OFF modeIsolating the appliance from the mains Shutting the appliance down for a long period Shutting down Control thermostat 7.5 Control thermostat Troubleshooting Symptom Cause Solution Remark Gas smell Troubleshooting general errorsWater leakage Explosive ignition Symptom Cause Solution Remark Insufficient hot water Troubleshooting insufficient hot water Troubleshooting No hot water Cycle Symptom Cause Solution RemarkPage Introduction Preparation for maintenance Performing maintenance Performing maintenance Descaling and cleaning the tankWater-side mainte- nance 12.3.1 Checking the anodes IMD-0235 R2 Clean the orifices Clean the burnersGas-side mainte- nance 12.4.1 Checking the flue baffles Finalising mainte- nance 13.1 General warranty Warranty certificate13.2 Tank warranty Conditions for Instal- lation and use Warranty certificate Electrical diagram Electrical diagram BFM Electrical Diagram Optional Components Electrical diagram Index Index 0306