Saunier-Duval-Thema-Classic-F24e-Installation-manual

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18 Replacement of PartsTo Drain the central heating circuit• Open drain valve fitted at the lowest point in the system.• Allow air into the system by opening a radiator bleed screw or the boilers drain valve (f).To Drain the Domestic hot water circuit (F24E Only)• Close boiler isolating valve (b).• Turn on one or more hot water taps.To Drain the boiler• Close the isolating valves (a), (b) and (c) .• Open the boiler drain valve (f).(a)HEATINGRETURN(b)COLD WATERINLET (F24E Only)(f)BOILERDRAIN VALVE(c)HEATINGFLOW(d)DOMESTIC HOTWATER OUTLET(F24E Only)(e)GAS SERVICECOCKF24E shownNote: Isolating cocks water and gas are shown in the: OFF positionDiagram 18.1IMPORTANT INFORMATIONWARNING: Before commencing the replacement of anycomponent, isolate appliance from electrical supply and turnoff gas at service cock.Replacement of parts must be carried out by a competentperson.When replacing components it may be necessary to renewsealing washers, gaskets and 'O' rings. If new ones aresupplied with replacement components they must be used.All parts are replaced in reverse order to removal.If any gas-carrying components are disturbed, removed orreplaced it will be necessary on completion of assembly to testfor gas soundness and purge in accordance with the currentissue of BS6891 or in IE, the current edition of I.S.813 "DomesticGas <strong>Installation</strong>s".18.1 Central heating thermistorBefore starting refer to the front of Section 18 Importantinformation.• Remove the front panel, refer to Section 15.3.• Lower the control panel, refer to Section 15.4.CENTRAL HEATINGTHERMISTORF24E shown9550Diagram 18.2• Locate central heating thermistor on heating flow pipe oncentre of boiler, see diagram 18.2.• Unclip thermistor from pipe.• Disconnect electrical connections from thermistor.• Fit electrical connections to replacement thermistor and fitthermistor to pipe. The polarity is not important.4000124050-242
18 Replacement of Parts18.2 Fan.Before starting refer to the front of Section 18 Importantinformation.• Remove the front panel, refer to Section 15.3.• Remove the sealed chamber cover, refer to Section 15.5.• Remove the fan, refer to Section 15.10.18.3 Air pressure switchBefore starting refer to the front of Section 18 Importantinformation.• Remove the front panel, refer to Section 15.3.• Remove the sealed chamber cover, refer to Section 15.5.• Locate air pressure switch situated at the top right hand side,see diagram 18.3.• Remove air pressure switch tube.Note: Do not fit tube until the air pressure switch is in position.• Disconnect air pressure switch electrical connections.• Unclip to remove air pressure switch.18.4 (F24E Only) Domestic water inlet filterIf the water flow rate through the appliance has reduced it maybe necessary to clean or replace the water inlet filter, refer tosection 15.12.Before starting refer to the front of Section 18 Importantinformation.• Remove the front panel, refer to Section 15.3.• Lower the control panel, refer to Section 15.4.• Clean or replace the water inlet filter, refer to Section 15.12.18.5 Central Heating FilterIt may be necessary to clean or replace the central heating filter.Before starting refer to the front of Section 18 Importantinformation.• Isolate flow and return valves (a) and (c).• Clean or replace the central heating filter, refer to Section15.13.18.6 ( F24E Only) Cold water inlet restrictorBefore starting refer to the front of Section 18 Importantinformation.• Remove the front panel, refer to Section 15.3.• Lower the control panel, refer to Section 15.4.• Isolate cold water inlet valve (b).Drain down domestic hot water circuit of boiler only, refer torelevant part of diagram 18.1.• Undo union nuts from boiler cold water in isolating valve.• Clean and inspect restrictor, replace if necessary, see diagram18.4.18.7 Burner, refer to Section 15.9.Before starting refer to the front of Section 18 Importantinformation.• Remove the front panel, refer to Section 15.3.RETAININGCLIPSELECTRICALCONNECTORSSENSINGTUBECOLD WATER INISOLATING VALVEF24E Only• Lower the control panel, refer to Section 15.4.9646AIR PRESSURESWITCHDiagram 18.3COLD WATER INLETRESTRICTORDiagram 18.4• Remove the sealed chamber cover, refer to Section 15.5.• Remove the combustion chamber cover, refer to Section15.7.• Remove burner from boiler, refer to Section 15.9.18.8 Burner injectors, refer to diagram 18.5.Before starting refer to the front of Section 18 Importantinformation.• Remove the front panel, refer to Section 15.3.• Lower the control panel, refer to Section 15.4.• Remove the sealed chamber cover, refer to Section 15.5.• Remove the combustion chamber cover, refer to Section15.7.• Remove burner from boiler, refer to Section 15.9.• Remove and replace injectors as required.Note: The injectors may be cleaned, remove injectors inspectand clean. Do not use a wire or sharp implement.Note: Make sure that injector size, marked on each injector, isthe same as that given in ‘Section 1 Technical Data’ for thetype of gas being used.43 4000124050-2
Page 1 and 2: To be left with the user4000124050-
Page 3 and 4: ContentsCONTENTS DESCRIPTION SECTIO
Page 5 and 6: Draining and FillingCaution: The bo
Page 7: User Controls and LightingCentral h
Page 10 and 11: Programmer Instructions for UseEven
Page 12 and 13: 1 Technical DataThe F24E and F18E S
Page 14 and 15: 3 Heating System Design3.1 Bypass
Page 16 and 17: 5 Boiler Schematic F24E1 - Fan.2 -
Page 18 and 19: 7 Fixing JigThe fixing jig is made
Page 20 and 21: 9 Boiler Installation9.1 Sheet meta
Page 22 and 23: 10 Horizontal Telescopic Top Flue I
Page 24 and 25: 18410a Horizontal Top Flue Installa
Page 26 and 27: 11.3 Mains Voltage External Control
Page 28 and 29: 112 Commissioning5. • Bleed each
Page 30 and 31: 15 Routine Cleaning and InspectionR
Page 32 and 33: 15 Routine Cleaning and Inspection9
Page 34 and 35: 16 Fault FindingBefore trying to op
Page 36 and 37: 16 Fault FindingFAULT: NO HEATINGAr
Page 38 and 39: 16 Fault FindingF1 FAULT DISPLAYEDF
Page 40 and 41: 17 Wiring Diagram F24EgorFANg/yOVER
Page 44 and 45: 18 Replacement of Parts18.9 Burner
Page 46 and 47: 18 Replacement of Parts230V CONTROL
Page 48 and 49: 18.25 System water pressure sensor,
Page 50 and 51: 18 Replacement of Parts18.32 (F24E
Page 52: 19 Spare partsWhen ordering spare p

Saunier-Duval-Thema-Classic-F24e-Installation-manual

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