A.O. Smith 28 30 50 60 service manual Shut the appliance down for a brief period OFF mode

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7

Starting up and shutting down	gis

•Shut the appliance down for a longer period.

7.3.1Shut the appliance down for a brief period (“OFF mode”)

OFF

13:45 Thursday 6ÉC

FROST PROTECTION ACTIVATED

Figure 7.5 Frost protection

To shut the appliance down for a brief period, you must activate the frost protection.

With the frost protection you can prevent water freezing in the appliance. Activate the frost protection as follows:

1.Press button Bto select the main menu.

2.Using Hand Lposition the cursor (») beside OFF. Confirm with E.

7.3.2

MENU »OFF ^ ON

È WEEK PROGRAM

Figure 7.6 Main menu

0

I

Figure 7.7 ThermoControl

The frost protection cuts in if the water temperature drops below 5°C. The text FROST will then appear on line one of the display The appliance will heat the water to 20°C (Tset) before dropping back to OFF mode.

nRemark

These values of 5°C and 20°C cannot be adjusted.

Disconnect the appliance from the mains

The appliance should only be disconnected from mains power in the correct way. The correct procedure is as follows:

1.Activate the MENU with B.

2.Use Hand Lto position the cursor beside OFF. See Figure 7.6.

3.Confirm OFF with E.

4.Wait until the fan has stopped. The S icon is then dimmed.

cNote

Failure to wait until the fan stops can cause damage to the appliance.

5.Turn the appliance OFF (position 0) using the ON/OFF switch on the control panel. See Figure 7.7.

6.Disconnect the appliance by putting the mains switch between the appliance and the mains power supply to position 0.

7.3.3Shut the appliance down for a longer period

Drain the appliance, if you are shutting it down for a longer period of time. Proceed as follows:

1.Disconnect the appliance from the mains as described in paragraph 7.3.2.

2.Shut off the gas supply.

3.Close the stop valve in the hot water pipe.

4.Open the drain valve.

5.Bleed the appliance (or installation) so that it drains completely empty.

50	Instruction Manual BFC

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Contents Release R.1.3 UK Your installer Liability CopyrightTrademarks More informationPage Table of contents GisStatus of the appliance Filling and drainingControl panel Starting up and shutting downMaintenance frequency Service programTroubleshooting MaintenanceAppendices IndexAbout the appliance IntroductionWhat to do if you smell gas Regulations Remark Target groups Maintenance Forms of notationSymbol Target group IntroductionOverview of this document Overview of thisDocument Chapter Target groups DescriptionGis Introduction Functioning of the applianceIntroduction Functional description of the appliance Appliance’s heating cycle Protection for the appliance Water temperature protection Gas controlPressure switch Ionisation rod Gas control Water temperature protectionPressure switch 3 FanVented installation Safety of the instal- lationUnvented installation Ionisation rodInstallation Introduction Packaging Environmental conditionsWater composition Humidity and ambient temperatureMaximum floor loading Working clearancesEnvironmental conditions Working clearancesTechnical specifications Plan and elevation of the applianceDime Description BFC Nsion DimensionsTechnical specifications Unit BFCVAC General Installation diagramGas data G30-30 mbar butaneInstallation UnventedCirculation pipe Water connections, Unvented Cold water sideHot water side Condensation drainageSee paragraph ’3.6.4 Condensation drainage’ Water connections, VentedGas connection See din FigureAir supply and flue gas discharge Dimension BFCAir supply and flue gas discharge Specification Description Concentric wall flue terminalConcentric roof flue terminal specifications Concentric roof flue terminalPreparation Mains voltage Electrical connectionPreparation Mains voltage Electrical connectionContinuous pump Extra on mode switch Tank onIsolating Transformer Program-controlled pumpChecking the supply pressure and burner pressure Connecting extra error signal Alarm OUTChecking the supply Pressure and burner ApplianceMain menu Conversion to a different gas category Conversion to a different gas categoryRemove the burner as complete assembly 13 Conversion of gas control Check the burner and supply pressure see paragraphInstallation Filling and draining Filling the appliance Filling unvented installationsFilling vented installations Filling the applianceInstallation diagrams F d c Filling and drainingDraining the appliance Draining unvented installationsDraining vented installations Draining the applianceGis Control panel Introduction OperatingPC connection Explanation of the icons ON/OFF switch of ThermoControlNavigation buttons Control panelIntroduction Operating modes Operating modes Error conditions Service conditionStatus of the appliance Error conditions Status of the appliance Service condition Service conditionGis Introduction Starting up Open the gas valve see ’ .1 Installation diagrams’Starting up and shutting down Shutting downShut the appliance down for a longer period Shut the appliance down for a brief period OFF modeDisconnect the appliance from the mains Starting up and shutting downAppliance’s heating cycle Appliance’s heating cycle12 Ignition Main menu Notational convention for menu-related instructionsSetting water temperature during on mode Switching into on mode Setting the water temperatureSetting the water temperature via Setpoint Menu Changing the appliance’s standard week program Remark Week programme IntroductionStarting up and shutting down the week program Example Setting the switch-on timeSetting switch-off time Adding times to a week program Setting the water temperatureSetting program-controlled pump Week programmeDeleting times from a week program 20 Period added23 week program options Extra period Programming an extra periodSettings SettingsSetting menu language Setting day and time Displaying appliance specifications Remark46 Main menu Gis Displaying the error history Service programSetting the hysteresis Service program Setting the pump on/offSetting the service interval Displaying the appliance historySetting the display scroll speed Setting the display contrastSetting the backlight time Setting the display contrastService program Displayed errors TroubleshootingGeneral errors Troubleshooting table for general errors Symptom Cause Solution Remark Gas smell Gas leakWater leakage Symptom Cause Solution Remark Display is offSee appendix ’A.2 Electrical diagram BFC’ Insufficient or no hot Troubleshooting table for displayed errorsSymptom Cause Solution Remark Explosive ignition WaterS04 blocking error S02 blocking errorS03 blocking error S05 blocking errorS15 blocking error S13 blocking errorS14 blocking error Phase-sensitive. See ’3.10 Electrical connection’ F02 lock out errorAppliance specifications’ How to bleed air from the gas line, and measure the supply F08 lock out error F06 lock out errorF07 lock out error ’3.9 Air supply and flue gas discharge’Error F09 remains active in the event that the water F10 lock out errorRelease R.1.3 UK Release R.1.3 UK E03 blocking error C04 blocking errorE01 blocking error E04 blocking errorMaintenance frequency Determining service intervalMaintenance frequency Maintenance Remark Preparation for maintenanceStarting up Maintenance Cleaning the burner Descaling and cleaning the tankCleaning condensation water discharge Water-side mainte- nance Introduction12.4.3 Cleaning the orificeCleaning heat exchanger Remark Finalising mainte- nanceWarranty Certificate Warranty Certificate Appendices Week program cardElectrical diagram AppendicesWeek program card Release R.1.3 UK IX Index Index0306 IX Index