Electrical diagram, Appendices | A.O. Smith 28 30 50 60 specification

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

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

Contents

Release R.1.3 UK Your installer Copyright TrademarksLiability More informationPage Table of contents Gis Filling and draining Control panelStatus of the appliance Starting up and shutting down Service program TroubleshootingMaintenance frequency Maintenance Appendices Index About the appliance IntroductionWhat to do if you smell gas Regulations Target groups Maintenance Forms of notation Symbol Target groupRemark Introduction Overview of this DocumentOverview of this document Chapter Target groups Description Gis 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 Fan Safety of the instal- lation Unvented installationVented installation Ionisation rod Installation Introduction Packaging Environmental conditions Humidity and ambient temperature Maximum floor loadingWater composition Working clearances Environmental conditions Working clearances Technical specifications Plan and elevation of the appliance Dimensions Technical specificationsDime Description BFC Nsion Unit BFC VAC Installation diagram Gas dataGeneral G30-30 mbar butane Installation Unvented Water connections, Unvented Cold water side Hot water sideCirculation pipe Condensation drainage Water connections, Vented Gas connectionSee paragraph ’3.6.4 Condensation drainage’ See din Figure Air supply and flue gas discharge Dimension BFCAir supply and flue gas discharge Specification Description Concentric wall flue terminal Concentric roof flue terminal specifications Concentric roof flue terminal Preparation Mains voltage Electrical connectionPreparation Mains voltage Electrical connection Extra on mode switch Tank on Isolating TransformerContinuous pump Program-controlled pump Connecting extra error signal Alarm OUT Checking the supply Pressure and burnerChecking the supply pressure and burner pressure Appliance Main menu Conversion to a different gas category Conversion to a different gas category Remove the burner as complete assembly 13 Conversion of gas control Check the burner and supply pressure see paragraph Installation Filling the appliance Filling unvented installations Filling vented installationsFilling and draining Filling the appliance Installation diagrams F d c Filling and draining Draining unvented installations Draining vented installationsDraining the appliance Draining the appliance Gis Control panel Introduction Operating Explanation of the icons ON/OFF switch of ThermoControl Navigation buttonsPC connection Control panel Introduction Operating modes Operating modes Error conditions Service conditionStatus of the appliance Error conditions Status of the appliance Service condition Service condition Gis Open the gas valve see ’ .1 Installation diagrams’ Starting up and shutting downIntroduction Starting up Shutting down Shut 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 down Appliance’s heating cycle Appliance’s heating cycle 12 Ignition Main menu Notational convention for menu-related instructions Setting 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 programme Deleting times from a week program 20 Period added 23 week program options Extra period Programming an extra period Settings SettingsSetting menu language Setting day and time Displaying appliance specifications Remark 46 Main menu Gis Displaying the error history Service programSetting the hysteresis Setting the pump on/off Setting the service intervalService program Displaying the appliance history Setting the display contrast Setting the backlight timeSetting the display scroll speed Setting the display contrast Service program Displayed errors TroubleshootingGeneral errors Troubleshooting table for general errors Symptom Cause Solution Remark Gas smell Gas leak Water 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 Water S02 blocking error S03 blocking errorS04 blocking error S05 blocking error S15 blocking error S13 blocking errorS14 blocking error Phase-sensitive. See ’3.10 Electrical connection’ F02 lock out error Appliance 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 error Release R.1.3 UK Release R.1.3 UK C04 blocking error E01 blocking errorE03 blocking error E04 blocking error Maintenance frequency Determining service interval Maintenance frequency Maintenance Remark Preparation for maintenance Starting up Maintenance Descaling and cleaning the tank Cleaning condensation water dischargeCleaning the burner Water-side mainte- nance Introduction Cleaning the orifice Cleaning heat exchanger12.4.3 Remark Finalising mainte- nance Warranty Certificate Warranty Certificate Appendices Week program card Electrical diagram Appendices Week program card Release R.1.3 UK IX Index Index 0306 IX Index