Setting the display contrast | A.O. Smith 28 30 50 60 specification

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Setting the display contrast

SERVICE INTERVAL

»500

^1000 BURNING HOURS È 1500

Figure 9.8 Service interval

9.8Setting the display contrast

CONTRAST DISPLAY

» 95 %

Figure 9.9 Display contrast

9.9Setting the backlight time

TIME BACKLIGHT

» 255 sec

Figure 9.10 Backlight time

9.10Setting the display scroll speed

SCROLLSPEED

» 10

Figure 9.11 Scroll speed

The service interval is based on the number of burning hours. This can be set to 500, 1000 and 1500 hours. The standard setting for number of hours is 500. Once the preset number of hours is reached, a message to this effect will appear. See paragraph ’6.4 Service condition’.

Adjust the service interval via:

•S: SERVICE INTERVAL

Figure 9.8 shows the related display.

Refer also to paragraph ’11.2 Determining service interval’.

Adjust the display contrast via:

•S: CONTRAST DISPLAY

The standard setting is 100%. The range is from 0 through 100%. Figure 9.9 shows the related display.

Adjust the backlight time (the time that the display backlight stays lit after the last button is pressed) via:

•S: TIME BACKLIGHT

The standard value is 255 sec. The range is from 0 through 255 seconds. Figure 9.10 shows the related display.

Adjust the display scroll speed via:

•S: SCROLLSPEED

The standard setting is 10. The range is from 0 through 100. Setting the value too high or low will make scrolling difficult.

Figure 9.11 shows the related display.

Release R.1.3 UK

67

Image 67

A.O. Smith 28 30 50 60 Setting the display contrast, Setting the backlight time, Setting the display scroll speed

Contents

Release R.1.3 UK Your installer More information CopyrightTrademarks LiabilityPage Gis Table of contents Starting up and shutting down Filling and drainingControl panel Status of the appliance Maintenance Service programTroubleshooting Maintenance frequency Index Appendices What to do if you smell gas Regulations IntroductionAbout the appliance Introduction Target groups Maintenance Forms of notationSymbol Target group Remark Chapter Target groups Description Overview of thisDocument Overview of this document Gis Introduction Functional description of the appliance Functioning of the applianceIntroduction Pressure switch Ionisation rod Water temperature protection Gas controlAppliance’s heating cycle Protection for the appliance 3 Fan Water temperature protectionPressure switch Gas control Ionisation rod Safety of the instal- lationUnvented installation Vented installation Introduction Packaging Environmental conditions Installation Working clearances Humidity and ambient temperatureMaximum floor loading Water composition Working clearances Environmental conditions Plan and elevation of the appliance Technical specifications Unit BFC DimensionsTechnical specifications Dime Description BFC Nsion VAC G30-30 mbar butane Installation diagramGas data General Unvented Installation Condensation drainage Water connections, Unvented Cold water sideHot water side Circulation pipe See din Figure Water connections, VentedGas connection See paragraph ’3.6.4 Condensation drainage’ Air supply and flue gas discharge Dimension BFCAir supply and flue gas discharge Concentric wall flue terminal Specification Description Concentric roof flue terminal Concentric roof flue terminal specifications Preparation Electrical connectionPreparation Mains voltage Electrical connection Mains voltage Program-controlled pump Extra on mode switch Tank onIsolating Transformer Continuous pump Appliance Connecting extra error signal Alarm OUTChecking the supply Pressure and burner Checking the supply pressure and burner pressure Main menu Conversion to a different gas category Conversion to a different gas category Remove the burner as complete assembly Check the burner and supply pressure see paragraph 13 Conversion of gas control Installation Filling the appliance Filling the appliance Filling unvented installationsFilling vented installations Filling and draining Filling and draining Installation diagrams F d c Draining the appliance Draining unvented installationsDraining vented installations Draining the appliance Gis Introduction Operating Control panel Control panel Explanation of the icons ON/OFF switch of ThermoControlNavigation buttons PC connection Status of the appliance Operating modes Error conditions Service conditionIntroduction Operating modes Status of the appliance Error conditions Service condition Service condition Gis Shutting down Open the gas valve see ’ .1 Installation diagrams’Starting up and shutting down Introduction Starting up Starting up and shutting down Shut the appliance down for a brief period OFF modeDisconnect the appliance from the mains Shut the appliance down for a longer period Appliance’s heating cycle Appliance’s heating cycle 12 Ignition Notational convention for menu-related instructions Main menu Setting the water temperature via Setpoint Menu Switching into on mode Setting the water temperatureSetting water temperature during on mode Starting up and shutting down the week program Week programme IntroductionChanging the appliance’s standard week program Remark Setting switch-off time Setting the switch-on timeExample Week programme Setting the water temperatureSetting program-controlled pump Adding times to a week program 20 Period added Deleting times from a week program 23 week program options Programming an extra period Extra period Setting menu language SettingsSettings Displaying appliance specifications Remark Setting day and time 46 Main menu Gis Setting the hysteresis Service programDisplaying the error history Displaying the appliance history Setting the pump on/offSetting the service interval Service program Setting the display contrast Setting the display contrastSetting the backlight time Setting the display scroll speed Service program General errors TroubleshootingDisplayed errors Symptom Cause Solution Remark Gas smell Gas leak Troubleshooting table for general errors See appendix ’A.2 Electrical diagram BFC’ Symptom Cause Solution Remark Display is offWater leakage Water Troubleshooting table for displayed errorsSymptom Cause Solution Remark Explosive ignition Insufficient or no hot S05 blocking error S02 blocking errorS03 blocking error S04 blocking error S14 blocking error S13 blocking errorS15 blocking error F02 lock out error Phase-sensitive. See ’3.10 Electrical connection’ Appliance specifications’ How to bleed air from the gas line, and measure the supply ’3.9 Air supply and flue gas discharge’ F06 lock out errorF07 lock out error F08 lock out error F10 lock out error Error F09 remains active in the event that the water Release R.1.3 UK Release R.1.3 UK E04 blocking error C04 blocking errorE01 blocking error E03 blocking error Determining service interval Maintenance frequency Maintenance frequency Remark Preparation for maintenance Maintenance Starting up Maintenance Water-side mainte- nance Introduction Descaling and cleaning the tankCleaning condensation water discharge Cleaning the burner Remark Finalising mainte- nance Cleaning the orificeCleaning heat exchanger 12.4.3 Warranty Certificate Warranty Certificate Week program card Appendices Appendices Electrical diagram Week program card Release R.1.3 UK Index IX Index IX Index 0306