Conversion to a different gas category

4Conversion to a different gas category

Caution

The conversion may only by carried out by an authorised installation engineer.

If the appliance must operate on a family of gases (LP gas or natural gas) or other gas category than that for which the appliance has been set at the factory, the appliance will have be adapted using a special conversion kit.

Caution

You must check the supply pressure and burner pressure once the conversion is complete.

Orifice assembly

Legend

1.connector

2.gas coupling

3.air supply hose

4.pressure switch hose

5. gas/air distribution plate

6. stamped figures

Instruction manual SGE

Page 45

Image 45

A.O. Smith SGE service manual Conversion to a different gas category, Orifice assembly

Contents

Installation User Your installer Trademarks Read this manual carefullyLiability More information Gis Table of contents Troubleshooting Service programMaintenance frequency Status of the appliance Performing maintenance Warranty certificateAppendices Table of contents Introduction About the applianceWhat to do if you smell gas Regulations Target groups Maintenance Forms of notation Symbol Target groupIntroduction Chapter Target groups Description Overview of this document Gis Working principle of the appliance Introduction General working principle of the applianceTopics covered in this chapter Other settings that govern the control behaviour are Appliances heating cycleWorking principle of the appliance Appliance water temperature protection Gas valve = time = Temperature 45 oC = Minimum tap water temperaturePressure switch Flame probe Protection for the appliance Introduction Pressure switch Appliance water temperature protectionGas valve 4 Fan Unvented installation Safety of the installationVented installation Flame probe Safety of the solar heating system Expansion vessel Fluid temperatureExpansion valve Pump of the solar heating system Packaging InstallationEnvironmental Conditions Air humidity and ambient temperature Appliance maximum floor loadWater composition Working clearances Dimensions of the appliance Technical specificationsAppliance is supplied without accessories. Check See the table Dime Description SGE Nsion Gas data General and electrical specifications Gas category 3+ G31 37 mbar Installation diagram Water connections, Unvented Cold water side See C in the installation diagram 3.5 Installation diagramHot water side Circulation pipe Condensation drainage Water connections, Vented Air supply and flue Introduction Gas connectionRequirements for flue gas discharge materials This section covers the following subjects Types of appliances Concentric connections Specifications Following example illustrates how to use the tablePractical example of concentric chimney flue Subject Description Parallel connectionsAppliance Diameter Maximum Total length Bend Appliance with parallel flue gas discharge material Practical example of parallel chimney flue Connecting communication cable to solar heating system Preparation Connecting the mains voltageSolar heating system Electrical connection Preparation 11.2 Connecting continuous pump Connecting the mains voltageIsolating transformer 11.2 Preparation Connecting an extra on mode switch Tank on Connecting a program-controlled pumpConnecting an extra error signal Alarm OUT Connecting extra head pump Connecting Q/T sensor Connecting the mains power Connecting pump station modulating pumpConnecting solar collector Connecting communication cable Connecting tank sensorConnecting extra head pump Connecting Q/T sensor Checking the supply pressure and burner pressure Procedure to check pressures Adjusting the pressure Gas dataFinish off 3.13.4 Finalising Finalising 13.4 Conversion to a different gas category Orifice assembly Conversion to a different gas category Burner pressure regulator Blank plate Gas control connectorPage Conversion to a different gas category Filling Filling the appliance Filling unvented installations Filling vented installationsFilling Filling with glycol Flushing with water Gis Draining Draining Draining unvented InstallationsActivate the Menu with Position the cursor in front of OFF Draining vented installations Draining solar heating system Draining glycol-filled systemPosition the cursor in front of OFF Confirm OFF with Gis Control panel Electronic controller ON/OFF switchControls Meaning of icons Navigation buttons PC connectionControl panel Operating modes Error conditions Service condition Status of the applianceOperating modes Error conditions Service conditionCollector temperature warning Q/T Sensor warning Starting and running Open 3.5 Installation diagram the manual gas valveStarting the appliance Starting the appliance Appliances heating cycle Starting and running Icon is activated Message PRE Purge appearsIcon is activated Message Ignition appears Shutting down Shut the appliance down for a brief period OFF modeShutting the appliance down for a long period Electrically isolating the appliance Shutting down Set the water temperature via Switching on the on modeMain menu Notational convention for menu-related instructions Week program Setting water temperature during on modeStarting and stopping the week program Changing the appliances standard week program Week program setting the switch- off time Week program setting the switch- on timeWeek program setting the water temperature Bring the cursor to SU Confirm with Adding times to a week program Week program setting the program- controlled pumpConfirm with Display shown in the figure will appear Scroll with to Start Operation Confirm with Deleting times from a week program Confirm with Or use to cancelExtra period To delete a period, proceed as follows Setting the switch-off time Setting the switch-on timeSetting the water temperature Setting the program-controlled pump Setting menu language SettingsSetting day and time Adjustable settings Confirm the minute setting with Displaying appliance specifications SGETable shows the correct settings Scroll with to Specifications Confirm with Setting the hysteresis Service programDisplaying the error history Appliance Default Range Setting the service interval Switching the pump on or offSetting legionella prevention Switching legionella prevention on and off Setting the drain-back tank Solar heating system configurationSetting the heating fluid type in the solar heating system Setting the solar limit temperature Setting the QT sensor yes/no Setting the central heating configurationReading the energy contribution of the solar heating system General errors TroubleshootingDisplayed errors Distinction is made between Symptom Cause Solution Remark Gas smell Troubleshooting table for general errorsDisplay is off Start the appliance up 9 Starting and running Explosive ignition Symptom Cause Solution Remark Water leakageHot water supply Insufficient or absent Symptom Cause Solution Remark Troubleshooting table for displayed errors Displayed errors S11 blocking error Code + Description Cause Solution RemarkS12 blocking error S13 blocking error Code + Description Cause Solution Remark S18 blocking error F01 blocking errorF02 lock out error Fails to work correctly Engineer Pressure switch not Code + Description Cause Solution Remark F03 lock out errorMaintenance 15.2 Preparation for maintenance. If there is Closing F05 lock out error Code + Description Cause Solution Remark F04 lock out errorNo gas Area F07 lock out error Code + Description Cause Solution Remark F06 lock out errorF08 lock out error Safety relay Engineer F11 blocking error Code + Description Cause Solution Remark F10 lock out error C03 blocking error Code + Description Cause Solution Remark C02 lock out errorC04 blocking error Selected appliance Temperature Code + Description Cause Solution Remark E01 blocking errorE03 lock-out error E04 lock-out error Displayed warnings Best maintenance frequency can be determined Maintenance frequencyMaintenance, based on the number of burning hours Standard setting is 500 burning hours Maintenance frequency Performing maintenance Introduction Preparation for maintenanceWait until the fan has stopped. The icon is then dimmed Performing maintenance Descaling and cleaning the tank Water-side maintenance IntroductionChecking the anodes Following steps must be carried out on the water side Gas-side maintenance Introduction Cleaning condensation water dischargeClean the burners Clean the orifices 16.1 General warranty Warranty certificate16.2 Tank warranty Collector warranty Conditions for Installation and use Warranty certificate This appendix contains AppendicesMenu structure of the main menu 17.2 Menu structure Heating system Appendices Menu structure 101 Electrical diagram Electrical diagram for the appliance Extra error signal connection Extra on mode switchController 0/I switch Temperature sensor T1 top Electrical diagram, solar heating system Solar system electrical diagram legend 106 Period Week program cardTset Pump Example Period 108 109 Index Index 0308