34SERVICINGisar + programmer - Installation and Servicing43 SERVICING SCHEDULETo ensure the continued safe and efficient operation of theappliance it is recommended that it is checked at regularintervals and serviced as necessary. The frequency ofservicing will depend upon the installation condition andusage but should be carried out at least annually.It is the law that any service work must be carried out by aCORGI registered installer. In IE service work must be carriedout by a competent person.1. Light the boiler and carry out a pre-service check, notingany operational faults.2. Check the gas consumption.3. Connect a suitable gas analyser to the sampling point onthe top of the boiler (refer to Frame 45) or into the flueterminal if access is possible (optional test).For correct boiler operation, the CO/CO 2 content of the fluegas should not be greater than 0.004 ratio.If this is the case, and the gas input is at least 90% of thenominal, then no further action need be taken. If not,proceed to Step 5 but see note above.4. Clean the main burner.5. Clean the heat exchanger & ‘S’ trap.6. Check the condition of the combustion chamber insulation.Any cracked or damaged pieces should be replaced.7. Check the main injector for blockage or damage.8. Wherever possible remove and clean the condensate ‘S’trap (refer to Frame 49) and check the drain for blockage.9. Check that the flue terminal is unobstructed and that theflue system is sealed correctly.10. Check the DHW filter for blockage. Refer to Frame 28.The servicing procedures are covered more fully in Frames44-51 and MUST be carried out in sequence.Note. In order to carry out either servicing or replacement ofcomponents the boiler front panel and sealing panelmust be removed. Refer to Frames 44 and 45.WARNING. Always turn OFF the gas supply at the gasservice cock, and switch OFF and disconnect the electricitysupply to the appliance before servicing.IMPORTANT.11. After completing the servicing or exchange of componentsalways test for gas soundness and carry out functionalchecks in 2 and 3 above.12. When work is complete the sealing panel MUST becorrectly refitted, ensuring that a good seal is made.Do NOT OPERATE the boiler if the sealingpanel is not fitted.13. If, for any reason, the condensate ‘S’ trap has beenremoved ensure the trap is refilled with water beforereassembling.14. Complete the service section in the BenchmarkCommissioning Checklist.42 HANDING OVER6. Explain and demonstrate the function of time andtemperature controls, radiator valves etc., for the economicuse of the system.7. Draw attention to the Programmer Users Instructions andhand them to the householder.8. Loss of system water pressureExplain that the dial underneath the boiler indicates thecentral heating system pressure and that if the normal COLDpressure of the system is seen to decrease over a period oftime then a water leak is indicated. Explain the re-pressurising procedure and if unable to repressurise or if thepressure continues to drop a registered local heatinginstaller should be consulted.WARNING.Do not fire the boiler if the pressure has reduced to zero fromthe original setting.9. After installation and commissioning please complete theCommissioning Checklist before handover tothe customer.For IE, its is necessary to complete a “Declaration ofConformity” to indicate compliance to I.S. 813:2002.10. IMPORTANTA comprehensive service should be carried out ANNUALLY.Stress the importance of regular servicing by a CORGIregistered installer. In IE servicing work must be carried outby a competent person.11. As the installer you may wish to undertake the servicecontract yourself or alternatively offer to the customer thebenefits of the Ideal Care Scheme, details of which areoutlined in the householder pack supplied with this boiler.1. Hand the User Instructions and Quick Reference Guideto the householder and explain his/her responsibilitiesunder the relevant national regulations.2. Explain and demonstrate the lighting and shuttingdown procedures.3. The operation of the boiler and the use and adjustmentof all system controls should be fully explained to thehouseholder, to ensure the greatest possible fueleconomy consistent with the household requirementsof both heating and hot water consumption.Advise the User of the precautions necessary to preventdamage to the system and to the building, in the eventof the system remaining inoperative during frostyconditions.4. Explain the function and the use of the boiler heatingand domestic hot water controls.Explain that due to system variations and seasonaltemperature fluctuations DHW flow rates/temperaturerise will vary, requiring adjustment at the draw off tap. Itis therefore necessary to draw the users attention to thesection in the Users Instructions titled “Control of WaterTemperature” and the following statement:“Additionally, the temperature can be controlled bythe user via the draw-off tap: the lower the rate thehigher the temperature, and vice versa”.5. Explain the function of the boiler fault mode.Emphasise that if a fault is indicated, the boiler shouldbe turned off and a CORGI registered local heatinginstaller consulted. In IE contact a competent person.After completing the installation and commissioning of the system theinstaller should hand over to the householder by the following actions:SERVICING