Inspection and maintenance 90020134823_07 ecoTEC plus Installation and maintenance instructions 29NoteThe person who carries out a combustion meas-urement must be trained in the use of a flue gasmeasuring instrument and in interpreting the res-ults. The flue gas measuring instrument that isused must be calibrated in accordance with thespecifications of the measuring instrument manu-facturer. The correct fuel type must be set on theflue gas measuring instrument.InspectionThe inspection is intended to determine the actual conditionof the product and compare it with the target condition. Thisis done by measuring, checking and observing.MaintenanceMaintenance is required in order to eliminate any deviationsof the actual condition from the target condition. This is nor-mally done by cleaning, setting and, if necessary, replacingindividual components that are subject to wear.As the competent person, you determine the maintenanceintervals (at least once every two years) and their scopebased on the how you define the condition of the productduring the inspection. Carry out all inspection and mainten-ance work in the sequence shown in Appendix C.9.2 Procuring spare partsThe original components of the product were also certifiedby the manufacturer as part of the declaration of conformity.If you use other, non-certified or unauthorised parts duringmaintenance or repair work, this may void the conformity ofthe product and it will therefore no longer comply with theapplicable standards.We strongly recommend that you use original spare partsfrom the manufacturer as this guarantees fault-free and safeoperation of the product. To receive information about theavailable original spare parts, contact the contact addressprovided on the back page of these instructions.▶ If you require spare parts for maintenance or repairwork, use only the spare parts that are permitted for theproduct.9.3 Using the function menuThe function menu allows you to actuate and test individualcomponents in the heating installation.Menu → Installer level → Test programmes → Functionmenu▶ Choose the heating installation components.▶ Press (Select) to confirm your selection.Display Testprogramme ActionT.01 Check boilercirculation pumpSwitch the boiler circulationpump on and off.T.03 Check fan Switch the fan on and off.The fan runs at maximumrotational speed.T.04 Check cylindercharging pumpSwitch the cylinder chargingpump on and off.T.05 Check circulationpumpSwitch the circulation pumpon and off.Display Testprogramme ActionT.06 Check externalpumpSwitch the external pump onand off.T.08 Checking theburnerThe product starts up andswitches to minimum load.The flow temperature isshown in the display.Terminate function menu▶ To terminate the function menu, select (Cancel).9.4 Carrying out electronics self-testsMenu → Installer level → Test programmes → Electronicsself-testYou can use the electronics self-test to check the PCB inadvance.9.5 Removing the gas-air mixture unitNoteThe gas-air mixture unit consists of four maincomponents:– Speed-regulated fan,– Air intake pipe,– Gas valve assembly,– Burner1. Switch off the product using the on/off button.2. Disconnect the product from the power grid.3. Close the gas stopcock.4. Remove the front casing. (→ Page 10)5. Remove the upper casing. (→ Page 10)Condition: Applies for 80 kW21▶ Undo the clip (1) on the air intake pipe (2). and removethe air intake pipe from the intake stub.