GENERALmini HE --- Installation & Servicing 97 Above adjacent ground, roof orbalcony level300 mm (12”)8 From a surface or a boundaryfacing the terminal.600 mm (24”)9 From a terminal facing a terminal 1200 mm (48”)10 From an opening in a car port (e.g.door or window) into dwelling1200 mm (48”)11 Vertically from a terminal on thesame wall1500 mm (60”)12 Horizontally from a terminal on thewall300 mm (12”)* If the terminal is within 150mm of any vertical soil or drainpipe, an aluminium shield at least 400mm (15 3/4”) longshould be fitted equi ---distant from the terminal and close tothe pipe.Vertical Terminals13 Above the roof pitch with roofslope of all angles.Above flat roof300 mm (12”)300 mm (12”)14 From single wall faceFrom corner wall faces600 mm (24”)1000 mm (40”)Twin Flue Applications15 Centre distance between air inletand flue outlet ducts120mm (5”) **** Where the twin flue ducts are positioned at or near the aboveminimum centres the wall sealing gaskets should be trimmed toallow them to fit flat to the wall. This should be done for both in-side and outside wall gasketsTerminals guards are available from boiler suppliers --- ask forTower Flue Guard, Model K6. In case of difficulty seek advicefrom:Grasslin UK Ltd.,Tower house, Vale Rise, Tonbridge,Kent TN9 1TB Tel. +44 (0) 1732 359 888 Fax No. +44 (0)1732 354 455 www.tfc---group.co.ukIMPORTANT It is absolutely ESSENTIAL to ensure, inpractice, that products of combustion discharging from theterminal cannot re---enter the building or any other adjacentbuilding through ventilators, windows, doors other sources ofnatural air infiltration, or forced ventilation / air conditioning.If this should occur the appliance MUST be turned OFF,labelled as “unsafe” until corrective action taken.AIR SUPPLYIt is NOT necessary to have a purpose---provided air vent inthe room or internal space in which the boiler is installed.Neither is it necessary to ventilate a cupboard orcompartment in which the boiler is installed, due to the lowsurface temperatures of the boiler casing during operation;therefore the requirements of BS6798, Clause 12, BS 5440:2and in IE I.S. 813:2002 may be disregarded.WATER CIRCULATION SYSTEMThe boilers are designed for connection to pressurised, fullypumped, sealed water central heating systems ONLY. Thedomestic hot water (DHW) calorifier is incorporated within thecombi boiler and only requires connection to the mains watersupply.Additional Pumps.The boiler is supplied with an integral circulating pump. If theboiler is to be used in conjunction with any additionalcirculating pumps, please contact the Technical Helpline foradvice on application.IMPORTANTA minimum length of 1m of copper pipe MUST be fitted toboth flow and return connections from the boiler beforeconnection to any plastic piping.Ensure that the mains water supply pressure is adequate toprovide the required DHW flow rate. Refer to Table 1 onpage 4.The central heating system should be in accordance with BS.6798 and, in addition, for smallbore and microbore systemsBS. 5449.The domestic hot water system should be in accordance withBS. 5546 and BS. 6700.Copper tubing to BS 2871:1 is recommended for watercarrying pipework and MUST be used for pipework carryingpotable water.Any soldered joints on potable water pipework MUST NOT bemade with solder containing lead.Ancillary pipework not forming part of the useful heatingsurface should be lagged to prevent heat loss and anypossible freezing --- particularly where pipes run through roofspaces or ventilated underfloor spaces.Draining taps should be at least 1/2” BSP nominal size andbe in accordance with BS 2879.WATER TREATMENTCentral HeatingAntifreeze fluid, corrosion and scale inhibitor fluids suitable foruse with boilers having copper heat exchangers may be usedin the central heating system.IMPORTANTThe application of any other treatment to this productmay render the guarantee of Caradon Ideal LimitedINVALID.Caradon Ideal Limited recommend Water Treatment inaccordance with the Benchmark Guidance Notes on WaterTreatment in Central Heating Systems.Caradon Ideal Limited recommend the use of Fernox, GEBetz Sentinel or Salamander water treatment products, whichmust be used in accordance with the manufacturersinstructions.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.BS 7593:1992 details the steps necessary to clean adomestic heating 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 beforethe system has been thoroughly flushed.