A.O. Smith 28 30 50 60 service manual Conversion of gas control

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is

Legend

gburner pressure regulator

hburner pressure control cap

iburner pressure control adjusting screw

jconnector

kflat sealing plate

lsupply pressure test nipple M burner pressure test nipple

Figure 3.13 Conversion of gas control

Conversion to a different gas category

k

l

m

j

h

g i

IMD-0079

nRemark

In the event the supply pressure for a gas category is the same as the burner pressure (see the gas tables in paragraph 3.4) then the gas control must be fitted with a flat sealing plate with cork gasket. A burner pressure that deviates in comparison to the supply pressure requires the use of a burner pressure regulator with rubber gasket. Each conversion kit contains all the necessary components.

12.If the flat sealing plate or burner pressure regulator need to be replaced:

-Unscrew the connector j from the gas control.

-If necessary, remove the flat sealing plate ! or burner pressure regulator 7.

-If necessary, fit the flat sealing plate or burner pressure regulator supplied with the conversion kit.

-Refit the connector to the gas control.

13.Refit the connector 1 of the glow igniter and ionisation rod to the controller.

14.Re-fit the three-part gas coupling b.

cNote

15.Check the burner and supply pressure (see paragraph 3.11).

16.Replace the plastic cover.

17.Remove the sticker showing the new gas category from the conversion kit, and attach it below the appliance’s rating plate. This clearly indicates that the appliance may no longer be run on the gas for which it was originally supplied.

18.Start the appliance (see paragraph 7.2).

Release R.1.3 UK

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Contents Release R.1.3 UK Your installer Trademarks CopyrightLiability More informationPage Gis Table of contentsControl panel Filling and drainingStatus of the appliance Starting up and shutting downTroubleshooting Service programMaintenance frequency MaintenanceIndex AppendicesWhat to do if you smell gas Regulations IntroductionAbout the appliance Symbol Target group Target groups Maintenance Forms of notationRemark IntroductionDocument Overview of thisOverview of this document Chapter Target groups DescriptionGis 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 Pressure switch Water temperature protectionGas control 3 FanUnvented installation Safety of the instal- lationVented installation Ionisation rodIntroduction Packaging Environmental conditions InstallationMaximum floor loading Humidity and ambient temperatureWater composition Working clearancesWorking clearances Environmental conditionsPlan and elevation of the appliance Technical specificationsTechnical specifications DimensionsDime Description BFC Nsion Unit BFCVAC Gas data Installation diagramGeneral G30-30 mbar butaneUnvented InstallationHot water side Water connections, Unvented Cold water sideCirculation pipe Condensation drainageGas connection Water connections, VentedSee paragraph ’3.6.4 Condensation drainage’ See din FigureAir supply and flue gas discharge Dimension BFCAir supply and flue gas discharge Concentric wall flue terminal Specification DescriptionConcentric roof flue terminal Concentric roof flue terminal specificationsPreparation Electrical connectionPreparation Mains voltage Electrical connection Mains voltageIsolating Transformer Extra on mode switch Tank onContinuous pump Program-controlled pumpChecking the supply Pressure and burner Connecting extra error signal Alarm OUTChecking the supply pressure and burner pressure Appliance Main menu Conversion to a different gas category Conversion to a different gas categoryRemove the burner as complete assembly Check the burner and supply pressure see paragraph 13 Conversion of gas controlInstallation Filling vented installations Filling the appliance Filling unvented installationsFilling and draining Filling the applianceFilling and draining Installation diagrams F d cDraining vented installations Draining unvented installationsDraining the appliance Draining the applianceGis Introduction Operating Control panelNavigation buttons Explanation of the icons ON/OFF switch of ThermoControlPC connection Control panelStatus of the appliance Operating modes Error conditions Service conditionIntroduction Operating modes Status of the appliance Error conditionsService condition Service conditionGis Starting up and shutting down Open the gas valve see ’ .1 Installation diagrams’Introduction Starting up Shutting downDisconnect the appliance from the mains Shut the appliance down for a brief period OFF modeShut the appliance down for a longer period Starting up and shutting downAppliance’s heating cycle Appliance’s heating cycle12 Ignition Notational convention for menu-related instructions Main menuSetting 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 Setting program-controlled pump Setting the water temperatureAdding times to a week program Week programme20 Period added Deleting times from a week program23 week program options Programming an extra period Extra periodSetting menu language SettingsSettings Displaying appliance specifications Remark Setting day and time46 Main menu Gis Setting the hysteresis Service programDisplaying the error history Setting the service interval Setting the pump on/offService program Displaying the appliance historySetting the backlight time Setting the display contrastSetting the display scroll speed Setting the display contrastService program General errors TroubleshootingDisplayed errors Symptom Cause Solution Remark Gas smell Gas leak Troubleshooting table for general errorsSee appendix ’A.2 Electrical diagram BFC’ Symptom Cause Solution Remark Display is offWater leakage Symptom Cause Solution Remark Explosive ignition Troubleshooting table for displayed errorsInsufficient or no hot WaterS03 blocking error S02 blocking errorS04 blocking error S05 blocking errorS14 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 F07 lock out error F06 lock out errorF08 lock out error ’3.9 Air supply and flue gas discharge’F10 lock out error Error F09 remains active in the event that the waterRelease R.1.3 UK Release R.1.3 UK E01 blocking error C04 blocking errorE03 blocking error E04 blocking errorDetermining service interval Maintenance frequencyMaintenance frequency Remark Preparation for maintenance MaintenanceStarting up Maintenance Cleaning condensation water discharge Descaling and cleaning the tankCleaning the burner Water-side mainte- nance IntroductionCleaning heat exchanger Cleaning the orifice12.4.3 Remark Finalising mainte- nanceWarranty Certificate Warranty Certificate Week program card AppendicesAppendices Electrical diagramWeek program card Release R.1.3 UK Index IX IndexIX Index 0306