Vaillant ecoTEC pro 24 Installation And Maintenance Instructions Manual

Also see for ecoTEC pro 24: Instructions for use Instructions for installation and servicing Instructions for installation and servicing Instructions for installation and servicing

Start-up 70020244995_02 ecoTEC pro Installation and maintenance instructions 19Additives for cleaning measures (subsequentflushing required)– Adey MC3+– Adey MC5– Fernox F3– Sentinel X 300– Sentinel X 400Additives intended to remain permanently in theinstallation– Adey MC1+– Fernox F1– Fernox F2– Sentinel X 100– Sentinel X 200Additives for frost protection intended to remainpermanently in the installation– Adey MC ZERO– Fernox Antifreeze Alphi 11– Sentinel X 500▶ If you have used the above-mentioned additives, informthe end user about the measures that are required.▶ Inform the end user about the measures required for frostprotection.7.5 Preventing low water pressureTo ensure that the heating installation operates smoothly,the indicator on the pressure gauge must point to the upperhalf of the grey area or to the middle of the bar graph displayin the display (marked by the dashed limit values) when theheating installation is cold. This corresponds to a filling pres-sure of between 0.1 MPa and 0.2 MPa (1.0 bar and 2.0 bar).If the heating installation extends over several storeys,higher filling pressures may be required to avoid air enteringthe heating installation.If the filling pressure falls below 0.08 MPa (0.8 bar), theproduct indicates low pressure by displaying a flashingpressure value. If the filling pressure falls below 0.05 MPa(0.5 bar), the product switches off. The display shows F.22.▶ Top up the heating water to start the product up again.The pressure value flashes in the display until a pressure of0.11 MPa (1.1 bar) or higher has been reached.7.6 Flushing the heating installation for the firsttime ("cold")NoteThe complete heating system must be flushedat least twice: Once with cold water and oncewith hot water in accordance with the followinginstructions.1. Check whether all thermostatic radiator valves and bothservice valves on the product are open.2. Connect a hose to the drain valve that is located at thelowest position in the heating system.3. Open the radiator valves and the drain valves so thatthe water can drain quickly. Start at the next point in thesystem and open the purging valves on the radiators sothat the contaminated water can completely drain.4. Close the drain cocks.5. Refill the heating system with water.6. Check that the expansion relief valve of the heatingsystem is functioning correctly by turning the handleon the valve.7. Check the pressure in the heating system and top upwith water if necessary.8. Close the filling valve and the cold water valve.7.7 Filling the heating installation11. Flush the heating installation through.2. Undo the cap of the automatic air vent (1) by one to tworotations and leave it open, as the product purges itselfvia the automatic air vent even in continuous mode.3. Select the check programme P.06.◁ The diverter valve moves to the mid-position, thepumps do not run and the product does not switchto heating mode.4. Observe the information on treating heating water.(→ Page 18)5. Connect the filling and drainage tap in the heating in-stallation to a heating water supply, if possible with thecold water valve, in accordance with the relevant stand-ards.6. Open the heating water supply.7. Open all radiator valves (thermostatic radiator valves) ofthe heating installation.8. If necessary, check that both service valves on theproduct are open.9. Slowly open the filling and drainage tap so that the wa-ter flows into the heating system.10. Purge the lowest radiator until water flows out of thepurging valve without bubbles.11. Purge all other radiators until the entire heating systemhas been filled with water.12. Close all purging valves.13. Monitor the rising filling pressure in the heating installa-tion.14. Fill with water until the required filling pressure isreached.15. Close the filling and drainage tap and the cold watervalve.16. Check all connections and the entire system for leaks.