A.O. Smith BFM - 120 manual Control panel, Explanation of icons, ON/OFF switch, Control thermostat

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gis

7 The control panel

7.1Introduction

Topics covered in this chapter:

Control panel;

Explanation of icons;

ON/OFF switch;

Control thermostat;

Burner control reset button.

7.2Control panel

The figure shows the control panel.

The control panel

7.3Explanation of icons

The table explains the meanings of the icons.

Icons and their meaning

 

 

 

 

Name

Explanation

 

 

 

 

 

 

 

 

 

 

ON/OFF Switch

ON mode / OFF

 

 

 

 

 

 

 

 

mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reset button with

Resets burner

 

 

 

 

 

 

 

error status

control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Temperature control

For setting water

 

 

 

 

 

 

 

 

temperature (Tset)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7.4ON/OFF switch

The ON/OFF switch sets the appliance in ON mode or OFF mode. In OFF mode the appliance is still electrically live. This ensures that the frost protection is active.

Note

To electrically isolate the appliance, you must use the isolator between the appliance and the mains power supply.

7.5Control thermostat

Use the rotary knob of the control thermostat to set the desired water temperature between ± 40°C and ± 70°C. The range is continuous and is labelled 1 through 4. The table shows the temperatures corresponding to the numbers on the knob.

IMD-0462 R0

The control panel comprises:

an ON/OFF switch with status lamp;

a reset button with status lamp;

a control thermostat with rotary knob;

two status lamps.

Temperature settings

Position

Temperature

1± 40°C

2± 50°C

3± 60°C

4± 70°C

Instruction manual BFM

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Contents Page Page Trademarks Read this manual carefullyLiability More informationGis Table of contents Performing maintenance TroubleshootingWarranty certificate Electrical diagramAbout 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 Pressure switch Water temperature protectionFlame probe Protection DescriptionUnvented installation Safety of the instal- lationVented installation 3 T&P valveGis Air humidity and ambient temperature InstallationAir humidity and ambient temperature PackagingMaximum floor load InstallationWater composition Working clearancesTechnical specifica- tions Plan and elevation of the appliance Dimensions of the applianceDimens Description General and electrical specificationsBFM100 BFM120 Ion UnitDescription Unit Gas dataNatural gas G20 20 mbar LP gas data G30 30 mbar butaneInstallation diagram Installation diagramCold water side Water connections, VentedRecirculation pipe Hot water sideCirculation 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 panel ON/OFF switchExplanation of icons Control thermostatControl 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 down Shutting down the appliance for a brief period OFF modeIsolating the appliance from the mains Shutting the appliance down for a long periodShutting down Control thermostat 7.5 Control thermostat TroubleshootingSymptom Cause Solution Remark Gas smell Troubleshooting general errorsWater leakage Explosive ignitionSymptom Cause Solution Remark Insufficient hot water Troubleshooting insufficient hot waterTroubleshooting No hot water Cycle Symptom Cause Solution RemarkPage Introduction Preparation for maintenance Performing maintenancePerforming maintenance Descaling and cleaning the tankWater-side mainte- nance 12.3.1 Checking the anodesIMD-0235 R2 Clean the orifices Clean the burnersGas-side mainte- nance 12.4.1 Checking the flue baffles Finalising mainte- nance13.1 General warranty Warranty certificate13.2 Tank warranty Conditions for Instal- lation and useWarranty certificate Electrical diagram Electrical diagram BFM Electrical DiagramOptional Components Electrical diagram Index Index 0306