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

15 Routine Cleaning and InspectionREMEMBER, when replacing a part on this appliance, use onlyspare parts that you can be assured conform to the safety andperformance specification that we require. Do not usereconditioned or copy parts that have not been clearly authorisedby Hepworth Heating.To ensure the continued efficient and safe operation of theboiler it is recommended that it is checked and serviced atregular intervals. The frequency of servicing will depend uponthe particular installation conditions and usage, but in generalonce a year should be enough.It is the law that any servicing is carried out by a competantperson.PRODUCTSSAMPLINGPOINT9532Diagram 15.115.1 Products of combustion checkNote: To obtain a products of combustion reading, unscrewthe left hand sampling point cap on the flue elbow, located ontop of boiler, see diagram 15.1.Connect the analyser tube onto sampling point.Refer to the combustion product values in Section 1 TechnicalData.Switch on the electrical supply and gas supply, then operatethe boiler.On completion of the test switch off the electrical supply andthe gas supply, remove analyser tube and replace samplingpoint cap.15.2 Service Check and Preparation.• Isolate boiler from the gas and electrical supplies.• (F24E Only) Drain the Domestic hot water circuit, refer todiagram 15.2.• Drain the boiler, refer to diagram 15.2.• On completion check all gas-carrying parts for soundnesswith leak detection fluid.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 isolating valves (a) 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 position Diagram 15.24000124050-230