A.O. Smith 28 30 50 60 service manual Electrical diagram, Appendices

Page 92

A

Appendices

is

A.2 Electrical diagram

BFC

% = brown

& = blue

∋ = yellow/green

( = black

# = white (flat ca-

∃ = grey/beige

TERMINAL STRIP CONNECTIONS:

A Earth

NNeutral

L1	Phase input of controller
L2	Phase input of isolating transformer (primary side)
L3	Phase output of isolating transformer (secondary side)
L4	Phase input of program-controlled pump
L5	Phase input of continuous pump

COMPONENTS:

AController

BIonisation rod C Glow igniter D Gas control

E Burner earth connection F Extra ON mode switch G Continuous pump

H Program-controlled pump J Extra error signal

K Isolating transformer

L Double-pole mains switch M ON/OFF switch control N Display/Flat cable

OFan

PTemperature sensor (T2 - bottom of tank) Q Dummy

R Temperature sensor (T1 - top of tank) S Selection resistor

T Pressure switch

CONTROLLER CONNECTIONS:

J1 Connector for display to controller

J2 Connector for power supply to controller

J19 Connector for extra error signal

J20 Connector for gas control

J21 Connector for program-controlled pump

J24 Connector for fan

JP2 Connector for ionisation rod and glow igniter JP3 Connector for temperature sensor T2

JP4 Connector for dummy

JP5 Connector for temperature sensor T1

JP6 Connector for selection resistor and pressure switch JP8 Connector for extra ON mode switch

F1 Fuse

F2 Fuse

Figure A.1 Electrical diagram BFC

92	Instruction Manual BFC

Image 92

Contents Release R.1.3 UK Your installer Copyright TrademarksLiability More informationPage Table of contents GisFilling and draining Control panelStatus of the appliance Starting up and shutting downService program TroubleshootingMaintenance frequency MaintenanceAppendices IndexAbout the appliance IntroductionWhat to do if you smell gas Regulations Target groups Maintenance Forms of notation Symbol Target groupRemark IntroductionOverview of this DocumentOverview of this document 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 Water temperature protection Pressure switchGas control 3 FanSafety of the instal- lation Unvented installationVented installation Ionisation rodInstallation Introduction Packaging Environmental conditionsHumidity and ambient temperature Maximum floor loadingWater composition Working clearancesEnvironmental conditions Working clearancesTechnical specifications Plan and elevation of the applianceDimensions Technical specificationsDime Description BFC Nsion Unit BFCVAC Installation diagram Gas dataGeneral G30-30 mbar butaneInstallation UnventedWater connections, Unvented Cold water side Hot water sideCirculation pipe Condensation drainageWater connections, Vented Gas connectionSee paragraph ’3.6.4 Condensation drainage’ 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 connectionExtra on mode switch Tank on Isolating TransformerContinuous pump Program-controlled pumpConnecting extra error signal Alarm OUT Checking the supply Pressure and burnerChecking the supply pressure and burner pressure 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 the appliance Filling unvented installations Filling vented installationsFilling and draining Filling the applianceInstallation diagrams F d c Filling and drainingDraining unvented installations Draining vented installationsDraining the appliance Draining the applianceGis Control panel Introduction OperatingExplanation of the icons ON/OFF switch of ThermoControl Navigation buttonsPC connection Control panelIntroduction Operating modes Operating modes Error conditions Service conditionStatus of the appliance Error conditions Status of the applianceService condition Service conditionGis Open the gas valve see ’ .1 Installation diagrams’ Starting up and shutting downIntroduction Starting up Shutting downShut the appliance down for a brief period OFF mode Disconnect the appliance from the mainsShut the appliance down for a longer period 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 Setting the water temperature Setting program-controlled pumpAdding times to a week program 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 Setting the pump on/off Setting the service intervalService program Displaying the appliance historySetting the display contrast Setting the backlight timeSetting the display scroll speed 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’ Troubleshooting table for displayed errors Symptom Cause Solution Remark Explosive ignitionInsufficient or no hot WaterS02 blocking error S03 blocking errorS04 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 F06 lock out error F07 lock out errorF08 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 C04 blocking error E01 blocking errorE03 blocking error E04 blocking errorMaintenance frequency Determining service intervalMaintenance frequency Maintenance Remark Preparation for maintenanceStarting up Maintenance Descaling and cleaning the tank Cleaning condensation water dischargeCleaning the burner Water-side mainte- nance IntroductionCleaning the orifice Cleaning heat exchanger12.4.3 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