2 Important information2.12 Boiler CasingDo not remove or adjust the casing in any way, asincorrect fitting may result in incorrect operation orfailure to operate at all.2.13 Condensate DrainThe condensate drain, see section 10.3, must not bemodified or blocked.2.14 Pluming from flue terminalAll condensing boilers produce a plume of water vapourfrom the flue terminal. This is due to the high efficiencyand hence low flue gas temperature. This may increasein wet, damp weather but this is completely normal andindicates that the boiler is operating correctly.2.15 CleaningThis appliance contains metal parts and care should betaken when handling and cleaning with particular regardto edges.The boiler casing can be cleaned using a mild liquiddetergent with a damp cloth, then a dry cloth to polish.Do not use any form of abrasive or solvent cleaner asyou may damage the paintwork.2.16 Maintenance and ServicingFor the continued efficient and safe operation of theboiler it is recommended that it is checked and servicedat regular intervals. The frequency of servicing willdepend upon the installation conditions and usage, butin general, once a year should be enough.If this appliance is installed in a rented property there isa duty of care imposed on the owner of the property bythe current issue of the Gas Safety (Installation and Use)Regulations, Section 35.Servicing/maintenance should be carried out by acompetent person in accordance with the rules in forcein the countries of destination.To obtain service, please call your installer or VaillantService Solutions (0870 6060 777).Please be advised that the installation engineer on com-pletion of commissioning and servicing should completethe ‘Benchmark’ logbook.All CORGI Registered Installers carry a CORGI ID card,and have a registration number. Both should be recor-ded in your boiler Logbook. You can check your installeris CORGI registered by calling CORGI direct on: - 01256372300.Instructions for Use, Installation and Servicing ecoMAX pro6Sheet Metal PartsThis boiler contains metal parts (components) and careshould be taken when handling and cleaning, withparticular regard to edges.Sealed ComponentsUnder no circumstances must the User interfere withany sealed component as this could result in apotentially dangerous situation arising.Electrical Supply FailureThis boiler must be earthed.The boiler will not work without an electrical supply.Normal operation of the boiler should resume when theelectrical supply is restored.Reset any external controls to resume normal operationof the central heating.If the boiler does not resume normal operation turn themains reset switch off and on. If the boiler does notresume normal operation after this the overheatthermostat may have operated. The overheatthermostat would only operate under abnormalconditions and, under these circumstances; it would beadvisable to consult your installation / servicingcompany.2.10 Protection Against FreezingThe boiler has a built in frost protection programme aslong as the electricity and gas are left switched on.This device operates the burner and system pump whenthe temperature inside the boiler falls to 3 °C.Any other exposed areas of the system should beprotected by a separate frost thermostat.If the mains electricity and gas are to be turned off forany long periods during severe weather, it isrecommended that the whole system, including theboiler, should be drained to avoid the risk of freezing.Make sure that, if fitted, the immersion heater in thecylinder is switched off.If you have a sealed water system contact yourinstallation/ servicing company as draining, refilling andpressurising MUST be carried out by a competentperson.As a safety feature the boiler will stop working if thecondensate drain becomes blocked. During freezingconditions this may be due to the forming of ice in thecondense drain external to the house. Release an iceblockage by the use of warm cloths on the pipe. Theboiler should then restart. Contact your installation/servicing company if the fault persists.2.11 Boilers Installed in a Compartment or CupboardIf the boiler is fitted into a compartment or cupboard itdoes not require ventilation openings.Do not use the compartment or cupboard for storage.