A.O. Smith SGE service manual 12.5, Connecting tank sensor, Connecting communication cable

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3

3.12.5

Installation

Connecting tank sensor

is

Note

This sensor is already mounted in the tank prior to delivery. The sensor is mounted between the inlet and outlet of the heat exchanger. However, you must still connect the lead to the solar heating system controller.

1.Connect the sensor lead with the blade connectors to the sensor.

2.Connect the other end to terminals 2 and 4 of J14.

3.Fit the cables in the strain relief.

4.Continue (3.12.6 "Connecting communication cable").

3.12.6Connecting communication cable

Note

>The communication cable must always be connected, otherwise neither the appliance nor the solar heating system controller will run.

1.Connect the double connector to J16.

2.Fit the cable in the strain relief.

3.Connect the other end of the communication cable to the terminal block of the appliance. See:

-connecting communication cable to appliance (3.11.9 "Connecting communication cable to solar heating system")

-electrical diagrams (17.3 "Electrical diagram for the appliance").

4.Connect the optional head pump (3.12.7 "Connecting extra head pump") or QT sensor (3.12.8 "Connecting Q/T sensor").

5.If you have no more connections to make:

-Fit the cap on the electrical terminal block.

-Fit the plastic covers onto the appliance.

3.12.7Connecting extra head pump

Note

This pump is essential if a greater head is required. When the system has such a high resistance (>110 kPa) that the pump in the pump station is insufficient, you can connect a second (ON/OFF) pump to the solar heating system controller.

1.Connect earth (), live and neutral to terminals 7 through 9.

2.Fit the cable in the strain relief.

3.If you need to connect an extra head pump continue (3.12.8 "Connecting Q/T sensor"), otherwise:

-Fit the cap on the terminal block.

-Fit the covers onto the appliance.

3.12.8Connecting Q/T sensor

Note

You can optionally add a Q/T sensor to the installation. This enables you to calculate the energy contribution of the system. For more information or to order the Q/T sensor, please contact your supplier.

1.Connect the 5V to J12-1.

2.Connect sensor S4 to J12-2.

40	Instruction manual SGE

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Contents Installation User Your installer Read this manual carefully TrademarksLiability More informationGis Table of contents Service program TroubleshootingMaintenance frequency Status of the applianceWarranty certificate Performing maintenanceAppendices Table of contents About the appliance IntroductionWhat to do if you smell gas Regulations Symbol Target group Target groups Maintenance Forms of notationIntroduction Overview of this document Chapter Target groups DescriptionGis Introduction General working principle of the appliance Working principle of the applianceTopics covered in this chapter Appliances heating cycle Other settings that govern the control behaviour areWorking principle of the appliance = time = Temperature 45 oC = Minimum tap water temperature Appliance water temperature protection Gas valvePressure switch Flame probe Protection for the appliance IntroductionAppliance water temperature protection Pressure switchGas valve 4 FanSafety of the installation Unvented installationVented installation Flame probeFluid temperature Safety of the solar heating system Expansion vesselExpansion valve Pump of the solar heating systemInstallation PackagingEnvironmental ConditionsAppliance maximum floor load Air humidity and ambient temperatureWater composition Working clearances Technical specifications Dimensions of the applianceAppliance is supplied without accessories. Check See the tableDime Description SGE Nsion General and electrical specifications Gas dataGas category 3+ G31 37 mbar Installation diagram See C in the installation diagram 3.5 Installation diagram Water connections, Unvented Cold water sideHot water side Circulation pipeWater connections, Vented Condensation drainageGas connection Air supply and flue IntroductionRequirements for flue gas discharge materials This section covers the following subjectsTypes of appliances Concentric connections Following example illustrates how to use the table SpecificationsPractical example of concentric chimney flue Parallel connections Subject DescriptionAppliance Diameter Maximum Total length BendPractical example of parallel chimney flue Appliance with parallel flue gas discharge materialPreparation Connecting the mains voltage Connecting communication cable to solar heating systemSolar heating system Electrical connection11.2 PreparationConnecting the mains voltage Connecting continuous pumpIsolating transformer 11.2 PreparationConnecting a program-controlled pump Connecting an extra on mode switch Tank onConnecting an extra error signal Alarm OUT Connecting extra head pump Connecting Q/T sensorConnecting pump station modulating pump Connecting the mains powerConnecting solar collector Connecting tank sensor Connecting communication cableConnecting extra head pump Connecting Q/T sensorChecking the supply pressure and burner pressure Procedure to check pressures Gas data Adjusting the pressureFinish off 3.13.4 Finalising 13.4 FinalisingOrifice assembly Conversion to a different gas categoryBurner pressure regulator Blank plate Gas control connector Conversion to a different gas categoryPage Conversion to a different gas category Filling Filling vented installations Filling the appliance Filling unvented installationsFilling Flushing with water Filling with glycolGis Draining Draining unvented Installations DrainingActivate the Menu with Position the cursor in front of OFFDraining solar heating system Draining glycol-filled system Draining vented installationsPosition the cursor in front of OFF Confirm OFF with Gis Electronic controller ON/OFF switch Control panelControls Meaning of iconsPC connection Navigation buttonsControl panel Status of the appliance Operating modes Error conditions Service conditionOperating modes Service condition Error conditionsCollector temperature warning Q/T Sensor warningOpen 3.5 Installation diagram the manual gas valve Starting and runningStarting the appliance Starting the appliance Appliances heating cycleIcon is activated Message PRE Purge appears Starting and runningIcon is activated Message Ignition appears Shut the appliance down for a brief period OFF mode Shutting downShutting the appliance down for a long period Electrically isolating the applianceShutting down Switching on the on mode Set the water temperature viaMain menu Notational convention for menu-related instructionsSetting water temperature during on mode Week programStarting and stopping the week program Changing the appliances standard week programWeek program setting the switch- on time Week program setting the switch- off timeWeek program setting the water temperature Bring the cursor to SU Confirm withWeek program setting the program- controlled pump Adding times to a week programConfirm with Display shown in the figure will appear Scroll with to Start Operation Confirm withConfirm with Or use to cancel Deleting times from a week programExtra period To delete a period, proceed as followsSetting the switch-on time Setting the switch-off timeSetting the water temperature Setting the program-controlled pumpSettings Setting menu languageSetting day and time Adjustable settingsDisplaying appliance specifications SGE Confirm the minute setting withTable shows the correct settings Scroll with to Specifications Confirm withService program Setting the hysteresisDisplaying the error history Appliance Default RangeSwitching the pump on or off Setting the service intervalSetting legionella prevention Switching legionella prevention on and offSolar heating system configuration Setting the drain-back tankSetting the heating fluid type in the solar heating system Setting the solar limit temperatureSetting the central heating configuration Setting the QT sensor yes/noReading the energy contribution of the solar heating system Troubleshooting General errorsDisplayed errors Distinction is made betweenTroubleshooting table for general errors Symptom Cause Solution Remark Gas smellDisplay is off Start the appliance up 9 Starting and runningSymptom Cause Solution Remark Water leakage Explosive ignitionHot water supply Insufficient or absentSymptom Cause Solution Remark Troubleshooting table for displayed errors Displayed errors Code + Description Cause Solution Remark S11 blocking errorS12 blocking error S13 blocking errorF01 blocking error Code + Description Cause Solution Remark S18 blocking errorF02 lock out error Code + Description Cause Solution Remark F03 lock out error Fails to work correctly Engineer Pressure switch notMaintenance 15.2 Preparation for maintenance. If there is ClosingCode + Description Cause Solution Remark F04 lock out error F05 lock out errorNo gas AreaCode + Description Cause Solution Remark F06 lock out error F07 lock out errorF08 lock out error Safety relay EngineerCode + Description Cause Solution Remark F10 lock out error F11 blocking errorCode + Description Cause Solution Remark C02 lock out error C03 blocking errorC04 blocking error Selected applianceCode + Description Cause Solution Remark E01 blocking error TemperatureE03 lock-out error E04 lock-out errorDisplayed warnings Maintenance frequency Best maintenance frequency can be determinedMaintenance, based on the number of burning hours Standard setting is 500 burning hoursMaintenance frequency Introduction Preparation for maintenance Performing maintenanceWait until the fan has stopped. The icon is then dimmed Performing maintenance Water-side maintenance Introduction Descaling and cleaning the tankChecking the anodes Following steps must be carried out on the water sideCleaning condensation water discharge Gas-side maintenance IntroductionClean the burners Clean the orificesWarranty certificate 16.1 General warranty16.2 Tank warranty Collector warranty Conditions for Installation and useWarranty certificate Appendices This appendix containsMenu structure of the main menu 17.2 Menu structure Heating systemMenu structure Appendices101 Electrical diagram for the appliance Electrical diagramExtra on mode switch Extra error signal connectionController 0/I switch Temperature sensor T1 topElectrical diagram, solar heating system Solar system electrical diagram legend 106 Week program card PeriodTset Pump Example Period108 Index 1090308 Index