AQUAIR BCP® Air handling units for swimming pools Sound levels dB(A) ■ Sound power level Sound power level at the supply air fan discharge and the return air fan intake (option), to be taken into account when calculating the silencer required: AQUAIR®BCP 110 140 180 230 265 315 355 Nominal flow rate Forced-draught fan dB(A) 75,0 77,8 81,3 85,9 87,2 91,1 91,1 Return air fan (option) dB(A) 75,8 80,9 77,4 83,0 81,3 86,0 86,0 High flow rate (option) Forced-draught fan dB(A) 86,3 86,3 85,5 85,5 85,7 85,3 Return air fan (option) dB(A) 80,7 80,7 80,7 80,7 83,2 83,2 ■ Sound pressure level Measurement conditions: in a free field, measured at a distance of 5 metres, directivity 2 and 1.5 metres from the ground. AQUAIR®BCP 110 140 180 230 265 315 355 Standard device dB(A) 63,2 66,9 69,8 73,6 74,8 77,7 77,6 NOTE: the sound pressure level depends on the installation conditions and is only given as a guide. Auxiliary heater option( ) Available capacities Assembly inside unit. Voltage 400 V/ 3ph / 50 Hz Power (kW) 3 6 9 12 15 18 24 27 36 54 Current (A) 4,3 8,7 13,0 17,3 21,7 26,0 34,6 39,0 52,0 77,9 Reaction to corrosion Theplates exchangers of AQUAIR BCP units are made® ■ These exchangers should never be used in swimming up of SMO-254 stainless steel, and the material used for the pools with electrolysis efficiency treatment. In these cases plates welding is pure copper. it is necessary to install intermediate titanium exchanger, The attached table indicates the behaviour to corrosion for otherwise serious corrosion problems may occur. stainless steel SMO-254 with respect to different compositions ■I n the case of a longer standstill, leave the exchanger full of water of water. Values outside these ranges may suppose corrosion pool without flowing or empty may cause corrosion problems. problems. During periods of inactivity it is mandatory to fill up the hydraulic Important recommendations: circuit of the exchanger completely with demineralised water. ■I f the pool water is introduced directly into the unit water To isolate the hydraulic circuit of the rest of the installation, the condenser, the addition of chlorine should never be carried installer must have shut-off valves at the input and output, and out before the inlet to this condenser. a drain for emptying. Water Concentration Time limits SMO-254 Water Concentration Time limits SMO-254 content (mg/l or ppm) (analyze before) content (mg/l or ppm) (analyze before) < 70 + Free chlorine < 1 + Alkalinity (HCO-3) 70 - 300 Within 24h + (Cl2) 1 - 5 Within 5 horas 0 > 300 + > 5 - Sulphate 1 < 70 + Hydrogen sulfide (H2S) < 0.05 No limit + 2- 70 - 300 No limit + > 0.05 + (SO4) > 300 + Free (aggressive) < 5 + 3 / SO2- > 1.0 No limit + carbon dioxide (CO2) 5 - 20 No limit + HCO- 4 < 1.0 > 20 + + Electrical < 10 S/cm + Total hardness (ºdH) 4.0 - 8.5 No limit + conductivity 10-500 S/cm No limit + Nitrate 1 (NO3-) < 100 No limit + > 500 S/cm + > 100 + < 6.0 0 3 < 0.2 No limit + 6.0 - 7.5 + Iron (Fe) > 0.2 + pH 2 7.5 - 9.0 Within 24h < 0.2 + Aluminium (Al) No limit + > 9.0 + > 0.2 + Ammonium < 2 + 3 (Mn) < 0.1 No limit + 2 - 20 Within 24h + Manganese > 0.1 + (NH4) > 20 + < 100 + Chlorures 100 - 200 No limit + 1 Sulfates and nitrates works as inhibitors for piping corrosion caused (Cl-) 200 - 300 + by chlorides in pH neutral environments. > 300 2 I n general, low pH (below 6) increases corrosion risk and high pH Légende: (above 7.5) decreases the corrosion risk. + Good resistance under normal conditions. 3 Fe3+ and Mn4+ are strong oxidants and may increase the risk for 0 Corrosion problems may ocurr specially when more factors are value 0. localised corrosion on stalinless steels. - Use is not recommended.. SiO2above 150 ppm increase the risk of scaling. CATALOGUE 2021 227 227