Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual

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Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual Manual pdf 26 page image

Start-up26 Installation and maintenance instructions ecoTEC exclusive 0020017768_0766 Start-up6.1 Filling the system6.1.1 Conditioning the heating waterb Caution!The use of unsuitable heating water cancause aluminium corrosion and thereforeresult in leaks!In contrast to steel, grey cast iron or copper,for example, aluminium reacts with alkalineheating water (pH value > 8.5) to produce sub-stantial corrosion.> When using aluminium, make sure that thepH value of the heating water is between6.5 and a maximum of 8.5.b Caution!Risk of material damage if the heatingwater is treated with unsuitable frost orcorrosion protection agents!Frost and corrosion protection agents cancause changes in the seals, noises duringheating and possibly consequential damage.> Do not use any unsuitable frost or corro-sion protection agents.Mixing additives with the heating water can result inmaterial damage. However no incompatibility withVaillant units has been detected with proper use of thefollowing products over a long period.> Follow the instructions provided by the manufacturerof the additives when using such additives.Vaillant does not accept any liability for the compatibilityor efficiency of any additives in the rest of the heatingsystemAdditives for cleaning measures (subsequent flushingrequired)– Fernox F3– Jenaqua 400– Sentinel X 300– Sentinel X 400Additives intended to remain permanently in the sys-tem– Fernox F1– Fernox F2– Sentinel X 100– Sentinel X 200– Fernox Antifreeze Alphi 11– Sentinel X 500Additives for frost protection intended to remain per-manently in the system– Fernox Antifreeze Alphi 11– Sentinel X 500> Inform the operator of the necessary measures if youhave used these additives.> Inform the operator about the required measures forfrost protection.> Observe all valid national and technical regulationswhen conditioning filling and supplementary water.Provided the national regulations and technical stand-ards do not make any greater demands, the followingapplies:> You must condition the heating water in the followingcases:– If the entire filling and supplementary water quan-tity during the operating life of the system exceedsthree times the nominal volume of the centralheating systemor– If the limit values shown in the tables are notobserved.Total heatingoutputOverall hardness at smallest boiler heatingsurface2)20 l/kW > 20 l/kW< 50 l/kW > 50 l/kWkW mol/m3 mol/m 3 mol/m3 50 No requirement or 31) 2 0.02 50 to  200 2 1.5 0.02 200 to  600 1.5 0.02 0.02 600 0.02 0.02 0.021) On systems with circulation water heaters and for systemswith electric heating elements2) Of specific system volume (nominal content in litres/heatingoutput; in the case of multi-boiler systems, the smallest singleheating output is to be used).These values only apply up to 3 times the system volume forfilling and supplementary water. If three times the system vol-ume is exceeded, the water must be conditioned in accordancewith the stipulations of the VDI in the same way as if the limitvalues in Tab. 6.1 are exceeded (softening, desalting, hardnessstabilisation, and sludging).Table 6.1 Guide values for the heating water: water hardness