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

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3 Heating System Design3.1 Bypass• The boiler is fitted with an adjustable automatic bypass.Ensure that under no circumstances does the flow rate dropbelow the figure specified, see table 1.• A system bypass is not required on the central heating circuitunless the system controls will not ensure aminimum water flowrate.• Where a bypass has to be fitted, the bypass must be placedat least 1.5 metres away from the appliance, see diagram 3.2.3.2 Filling the system F24E.• An integral filling device is fitted to the boiler to initially fill thesystem and replace water lost during servicing, see the relevantparts of diagram 2 controls and lighting and diagram 1.3.3 Filling the system F18E SB.• Provision for filling the system must be made. The methodsare shown in diagram 3.3. There must be no permanentconnection to the mains water supply, even through a nonreturnvalve.NOTE: It is important that fittings used for connection topotable water comply with the water undertakings requirements.TABLE 1. FLOW RATEModel Minimum flow rateF24E 16.94 litres per minuteF18E SB 13.21 litres per minuteThis is equal to 20°C differential at maximumheat input.DomesticwaterHot water outCold supply inBoilerFilling deviceAdditionalexpansionvessel(if required)9898FLOWBOILERRETURNCONTROLVALVEDOUBLECHECKVALVESUPPLYPIPE11593HOSEUNIONF24EDrainpointControlvalveDrainpointBypassvalve'A'Flow*HeatingcircuitReturnAdditionalBypass valve* (if required)HEATINGCIRCUITMethod 1CONTROLVALVEDRAINPOINTHOSEUNIONTEMPORARYCONNECTIONBoilerAdditionalexpansionvessel(if required)10157BOILERTYPE CA BACKFLOWPREVENTION DEVICEFLOWRETURNControlvalveDrainpointF18E SBBypassvalve'A' *FlowHeatingcircuitReturnAdditionalBypass valve* (if required)Diagram 3.2HEATINGCIRCUITMethod 2CONTROLVALVEDRAINPOINTCONTROLVALVESUPPLYPIPEAIR GAPTUNDISHDiagram 3.34000124050-214
4 Domestic Hot Water System Design. F24E OnlyGeneral - All domestic hot water circuits, connections, fittingsmust be in accordance with the relevant standards and watersupply regulations.For GB: Guidance G17 to G24 and recommendation R17 toR24 of the Water Regulation Guide.For IE: The current edition of I.S.813 "Domestic Gas<strong>Installation</strong>s".• Copper tubing or plastic Hep 20 may be used for the domestichot water system. Unnecessary pressure losses should beavoided.• Provision shall be made for a drain valve at the lowest pointsof the system.• The flow restrictor, supplied in the document envelope, mustbe fitted as diagram 7.1, limiting the flow through the boiler toa maximum of 10 litres/min.• The boiler will operate with a minimum supply pressure of 0.5bar, at a reduced flow rate.Best operating performance will be obtained from a supplypressure of 1 bar or greater.4.1 Hard Water AreasIn areas where the water is 'hard', more than 200mg/litre, it isrecommended that a proprietary scale reducer is fitted in thecold water supply to the boiler.15 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 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 42 and 43: 18 Replacement of PartsTo Drain the
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

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