Vaillant ecoTEC sustain 24 Installation And Maintenance Instructions Manual

Also see for ecoTEC sustain 24: Operating instructions Installation and maintenance instructions

Appendix0020253094_01 ecoTEC sustain Installation and maintenance instructions 43F 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)Mainten-ance(must becarried outat regularintervals)1Check whether the air/flue pipe is fully leak-tight and has been secured in placed correctly. Makesure that it is not damaged or blocked and that it has been installed correctly in accordance withthe relevant set-up instructions.X X2 Check the general condition of the product. Remove any dirt from the product and the vacuumchamber. X X3 Visually inspect the general condition of the Thermoblock. In doing so, pay particular attention tosigns of corrosion, rust and other defects. If you find any damage, carry out maintenance work. X X4 Check the gas flow pressure at maximum heat input. If the gas flow pressure is not within thecorrect range, carry out maintenance work. X X5 Check the product's CO₂ content (air ratio) and adjust this, if required. Keep a record of thisprocedure. X X6 Disconnect the product from the power mains. Ensure that the electricity, gas and water connec-tions have been attached correctly and, if required, correct these. X X7 Close the gas isolator cock and the service valves. X8Drain the product on the water side (observe the pressure gauge). Check the pre-charge pres-sure of the expansion vessel, and top up the vessel if necessary (approx. 0.03 MPa/0.3 bar un-der the system filling pressure).X9 Remove the compact thermal module. X10Check the insulating mats in the combustion area. If you notice any damage, replace the insulat-ing mats. Replace the burner flange insulation each time it is opened and accordingly each timemaintenance is carried out.X11 Clean the heat exchanger. X12 Make sure that the burner is not damaged. Replace it if necessary. X13 Check the condensate trap in the product, clean and fill this, if required. X X14 Install the compact thermal module. Caution: Replace the seals. X15 If the water volume is insufficient or the output temperature is not reached, replace the second-ary heat exchanger if necessary. X16Clean the strainer in the cold water inlet. Replace the strainer if impurities can no longer beremoved or if the strainer is damaged. In this case, also check the impeller sensor for dirt anddamage, clean the sensor (do not use compressed air for this) and replace the sensor if it isdamaged.X17 Open the gas isolator cock, reconnect the product to the mains and switch it on. X X18 Open the service valves, fill the product or heating installation to 0.1-0.2 MPa/1.0-2.0 bar (de-pending on the static height of the heating installation) and start the purge programme P.00. X19 Perform a test operation of the product and heating installation, including hot water generation,and purge the system once more if necessary. X X20 Carry out a visual inspection on the ignition and combustion behaviour. X X21 Check the CO₂ content (the air ratio) of the product again. X22 Check that no gas, flue gas, hot water or condensate is leaking from the product. Restore leak-tightness if necessary. X X23 Record the inspection/maintenance work carried out. X X