Installation Manual - Unical Lattner Condensing Hot Water Boilers

Instructions for the installer3.14 - WATER TREATMENTThe chemical/physical features of the heating system’s waterare fundamental for the boiler’s correct operation and safety.Infact the Standards indicated here below foresee a preventivetreatment before placing water inside the CH circuit.Reference standards:UNI CTI 8065/1989 “Water treatment in thermal heatingsystems for civil use”UNI CTI 8364/1984 “ Heating systems – Control andmaintenance”The scope of this treatment is finalized for eliminating orsubstantially reducing the following problems:- lime scale deposit- corrosion sludge- deposits- microbiological growths (moulds, bacteria etc.)An appropriate treatment of the supply water will preventthe above stated problems and will maintain the correctoperation and efficiency of the generator in time.For this purpose it will be necessary to fix the followingchemical-physical characteristics of the water:PH include between 6,5 and 8Hardness 15° FRTherefore, before filling the heating system it will be necessaryto fit the devices indicated in the figure.THE INSTALLATION MUST BE FORESEEN ONTHE RETURN PIPE OF THE PRIMARY CIRCUITDOWNSTREAM OF THE CIRCULATING PUMP.All necessary precautions must be taken for preventing theformation and localization of oxygen in the system’s water.For this reason, ensure yourself that the plastic piping usedin underfloor heating systems is impermeable to oxygen.If any anti-freeze solutions are used ensure that they arecompatible with aluminium and any other boilercomponents and materials.WARNING!Any damage caused to the boiler due to theformation of lime scale or by corrosive waterwill not be covered by the warranty.EXAMPLE OF SCALE REDUCING DEVICE CONNECTION FOR WATER TREATMENT1 2 3 4 5 2 67 11 BALL VALVE2 INSPECTION POCKET3 FILLING MANIFOLD4 DISCONNECTOR5 SCALE REDUCING DEVICE6 LITER COUNTER (Recommended)7 Y filter23