Vaillant home combi Installation And Maintenance Instructions Manual

Vaillant home combi Installation And Maintenance Instructions Manual Manual pdf 40 page image

Appendix40 Installation and maintenance instructions HOME 0020224355_00G Inspection and maintenance work – OverviewThe table below lists the manufacturer requirements with respect to minimum inspection and maintenance intervals. If na-tional regulations and directives require shorter inspection and maintenance intervals, you should observe these instead ofthe intervals listed in the table.No. Work Inspection(annual)Maintenance(must becarried out atregularintervals)*1Check the air/flue pipe for leak-tightness and to ensure that it is fastened correctly. Make surethat it is not blocked or damaged and has been installed in accordance with the relevant In-stallation Manual.X X2 Check the general condition of the product. Remove any dirt from the product and the vacuumchamber. X X3Visually inspect the general condition of the heat exchanger. In doing so, pay particular atten-tion to signs of corrosion, rust and other defects. If you notice any damage, carry out mainten-ance work.X X4 Check the gas connection pressure at maximum heat input. If the gas connection pressure isnot within the specified range, carry out maintenance work. X X5 Check the CO₂ content (air ratio) of the product and, if necessary, adjust it. X X6 Disconnect the product from the power mains. Check that the plug connections and electricalconnections are correct and make any necessary adjustments. X X7 Close the gas isolator cock and the service valves. X8Drain the product on the water side. Check the pre-charge pressure of the expansion vessel,and top up the vessel if necessary (approx. 0.03 MPa/0.3 bar under the system filling pres-sure).X9 Check the ignition electrode. X X10 Remove the gas-air mixture unit. X11 Replace both burner seals each time it is opened and accordingly each time maintenancework is carried out. X12 Clean the heat exchanger.→ Section "Cleaning the heat exchanger" X13 Check the burner for damage and replace it if necessary. X14 Check the condensate siphon in the product, clean it and, if required, replace it.→ Section "Cleaning the condensate siphon" X X15 Install the gas-air mixture unit. Caution: Replace the seals. X16 If necessary, if the hot water output is insufficient or the outlet temperature is not reached,replace the plate heat exchanger. X17Clean the filter in the cold water inlet. Replace the filter if impurities can no longer be removedor if the filter is damaged. If this is the case, also check that the impeller sensor is not dirty ordamaged. Clean the sensor (do not use compressed air) and, if it is damaged, replace it.X18 Open the gas isolator cock, reconnect the product to the mains and switch it on. X X19If the automatic purging programme does not start, open the service valves, fill the productor the heating installation to 0.1-0.2 MPa/1.0-2.0 bar (depending on the static height of theheating installation) and manually start the purging programme P.07.X20 Perform a test operation of the product and heating installation, including hot water generation(if available), and purge the system once more if necessary. X X21 Check the CO₂ content (the air ratio) of the product again. X22 Ensure that no gas, flue gas, water or condensate is leaking from the product. Restore leak-tightness if necessary. X X23 Record the inspection/maintenance work carried out. X X*Note: For those appliances which are not part of an annual service agreement/policy, maintenance must be carried out at least every5 years.