Vaillant ecoTEC sustain 24 Installation And Maintenance Instructions Manual

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

28 Installation and maintenance instructions ecoTEC sustain 0020253094_059 Start-up9.1 Carrying out the initial start-upInitial start-up must be carried out by a customer servicetechnician or an authorised competent person using theBenchmark Checklist. The Benchmark Checklist in the ap-pendix (→ Page 54) of the installation instructions must befilled in and stored carefully along with the unit's documenta-tion.▶ Carry out the initial start-up using the Benchmark Check-list in the appendix.▶ Fill out and sign the Benchmark Checklist.9.2 Checking and treating the heatingwater/filling and supplementary waterCaution.Risk of material damage due to poor-qual-ity heating water▶ Ensure that the heating water is of suffi-cient quality.▶ Before filling or topping up the installation, check thequality of the heating water.Checking the quality of the heating water▶ Remove a little water from the heating circuit.▶ Check the appearance of the heating water.▶ If you ascertain that it contains sedimentary materials,you must desludge the installation.▶ Use a magnetic rod to check whether it contains mag-netite (iron oxide).▶ If you ascertain that it contains magnetite, clean the in-stallation and apply suitable corrosion-inhibition meas-ures, or fit a magnetic filter.▶ Check the pH value of the removed water at 25 °C.▶ If the value is below 8.2 or above 10.0, clean the installa-tion and treat the heating water.▶ Ensure that oxygen cannot get into the heating water.Checking the filling and supplementary water▶ Before filling the installation, measure the hardness of thefilling and supplementary water.Treating the filling and supplementary water▶ Observe all applicable national regulations and technicalrules when treating the filling and supplementary water.Provided the national regulations and technical rules do notstipulate more stringent requirements, the following applies:You must treat the heating water in the following cases– If the entire filling and supplementary water quantity dur-ing the operating life of the system exceeds three timesthe nominal volume of the heating installation, or– If the guideline values listed in the following table are notmet, or– If the pH value of the heating water is less than 8.2 ormore than 10.0.TotalheatingoutputWater hardness at specific system volume1)≤ 20 l/kW > 20 l/kW≤ 50 l/kW > 50 l/kWkW ppmCaCO₃mol/m³ppmCaCO₃mol/m³ppmCaCO₃mol/m³< 50 < 300 < 3 200 2 2 0.02> 50to ≤ 200200 2 150 1.5 2 0.02> 200to ≤ 600150 1.5 2 0.02 2 0.02> 600 2 0.02 2 0.02 2 0.021) Nominal capacity in litres/heating output; in the case of multi-boiler systems, the smallest single heating output is to be used.Caution.Risk of material damage if the heatingwater is treated with unsuitable additives.Unsuitable additives may cause changes inthe components, noises in heating mode andpossibly subsequent damage.▶ Do not use any unsuitable antifreeze andcorrosion inhibitors, biocides or sealants.No incompatibility with our products has been detected todate with proper use of the following additives.▶ When using additives, follow the manufacturer's instruc-tions without exception.We accept no liability for the compatibility of any additive orits effectiveness in the rest of the heating system.Additives 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.