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Zanussi ULTRA SYSTEM 15 Installation And Servicing
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14Installation and ServicingGENERALThe boiler does not normally need a bypass but at least some radiators on the heating circuit, of load of at least 10% of theminimum boiler output, must be provided with twin lockshield valves so that this minimum heating load is always available. Seenote regarding thermostatic radiator valves on page 11.Note. Systems incorporating zone valves which could completely cut off the flow through the system must also include a bypass.BALANCING3 SYSTEM BALANCING1. Set the programmer to ON.Close the manual or thermostatic valves on all radiators,leaving the twin lockshield valves (on the radiators referredto above) in the OPEN position.Turn up the room thermostat and adjust the lockshieldvalve to give an uninterrupted flow through the radiator.These valves should now be left as set.2. Open all manual or thermostatic radiator valves and adjustthe lockshield valves on the remaining radiators, to give4 WATER TREATMENTCENTRAL HEATINGThe Logic System range of boilers have an ALUMINIUMalloy heat exchanger.IMPORTANT.The application of any other treatment to this product mayrender the guarantee of Invalid.The manufacturer recommends Water Treatment in accordancewith the Benchmark Guidance Notes on Water Treatment inCentral Heating Systems.If water treatment is used the manufacturer recommend onlythe use of Scalemaster Gold 100, FERNOX, MB-1, ADEY MC1,SENTINEL-X100 or CALMAG CM100 inhibitors and associatedwater treatment products, which must be used in accordancewith the manufacturers’ instructions.Notes.1. It is most important that the correct concentration of thewater treatment products is maintained in accordance withthe manufacturers’ instructions.2. If the boiler is installed in an existing system any unsuitableadditives MUST be removed by thorough cleansing. BS7593:2006 details the steps necessary to clean a domesticheating system.3. In hard water areas, treatment to prevent lime scale may benecessary - however the use of artificially softened water isNOT permitted.4. Under no circumstances should the boiler be fired before thesystem has been thoroughly flushed.For further information contact:Fernox Cookson ElectronicsForsyth RoadSheerwaterWokingSurrey GU21 5RZ+44 (0) 870 601 5000Sentinel Performance SolutionsThe Heath Business & Technical ParkRuncornCheshire WA7 4QXTel: 0800 389 4670www.sentinel-solutions.netScalemaster Water Treatment ProductsEmerald WayStoneStaffordshire ST15 0SRTel: +44 (0) 1785 811636Calmag Ltd.Unit 3-6, Crown WorksBradford RoadSandbeds, KeighleyWest Yorkshire BD20 5LNTel: +44 (0) 1535 210 320Adey Professional Heating SolutionsGloucester Road,Cheltenham GL51 8NRTel: +44 (0) 1242 546700around 20 o C temperature drop at each radiator.3. Adjust the room thermostat and programmer to NORMALsettings. |
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