Instructions for installation and servicing ecoTEC plus / 0020020828_054h Note!This boiler must be installed and serviced by a com-petent person in accordance with the GasSafety(Installation and Use) Regulations 1998.In the UK‘CORGI’ registered installers undertake the work incompliance with safe and satisfactory standard.1.2 ecoTEC plus boilersThe ecoTEC plus boilers are designed to provide centralheating from a fully pumped open-vented or sealed watersystem. The central heating water temperature can beadjusted on the boiler. The domestic hot water can onlybe adjusted on the boiler if it is installed with a VaillantuniSTOR unvented cylinder and relevant controls. Oncethe controls are set the boiler operates automatically.A frost protection programme is also included.Please read these instructions and follow them carefullyfor the correct and economical use of your boiler. Theseinstructions are applicable to the following ecoTEC plusboilers, available in Natural Gas. All ecoTEC plus boilerscan be converted to LPG.Appliance Maximum outputecoTEC plus 415 15 kWecoTEC plus 418 18 kWecoTEC plus 428 28 kWecoTEC plus 438 38 kW1.3 General notesThe boiler has been designed for use with a open-ventedcentral heating system, and comes fully tested andassembled. The boiler is easily mounted on any internalwall and can be installed with either a horizontal or verticalRSF (room sealed fan assisted) flue. The boiler uses astandard flue system (100 mm or 125 mm outside diameter).Flue extensions and additional bends and elbows areavailable for the flue system to increase the flexibility. Ifdesired, an inhibitor may be used in the system. Guidanceon the use of inhibitors is contained in these instructions.The boiler has a built in diagnostic system which indicatesthe operational status of the boiler. This feature provideskey information to aid commissioning and fault finding.The data badge is fitted to the combustion chambercover of the boiler. See text of General Requirements forinstallation requirements or notes. The Valliant ecoTECplus boilers have been constructed in accordance withrecognised safety regulations. Nevertheless, danger tothe life and limb of the user or third parties can still occuror the appliance or other material assets be damaged inthe event of improper use. The appliances are designedfor central heating systems. Any other use or extendeduse is considered to be use other than intended. Themanufacturer/ supplier is not liable for any resultingdamage. Intended use includes the observance of theoperating and installation manual and the adherence tothe inspection and maintenance conditions.a Caution!Any incorrect use is forbidden. The appliancesmust be installed by a competent person,who is responsible for adhering to the existingregulations, rules and guidelines.1.4 General informationThank you for choosing a Vaillant boiler. The informationgiven in this booklet will enable you to obtain the bestperformance from this boiler.1.4.1 Gas categoryThe boiler is supplied factory set for use on Natural Gas(G20). The ecoTEC plus boilers can be field adjusted foruse on LPG (propane G31), see section 7 for instructionsor contact Vaillant Service, 0870 6060 777.1.4.2 Gas safety (installation and use) regulationsIn your own interests and that of safety, it is the Law thatALL gas appliances are installed by a competent person inaccordance with the current issue of the above regulations.1.4.3 Gas testing and certificationThe boiler is tested and certificated for safety and per-formance. It is, therefore, important that no alteration ismade to the boiler.1.4 4 Control of substances hazardous to healthUnder Section 6 of The Health and Safety at Work Act 1974,we are required to provide information on substances haz-ardous to health. The adhesives and sealants used in thisappliance are cured and give no known hazard in this state.1.4.5 Insulation padsThese can cause irritation to skin, eyes and the respirato-ry tract. If you have a history of skin complaint you maybe susceptible to irritation. High dust levels are usualonly if the material is broken. Normal handling should notcause discomfort, but follow normal good hygiene andwash your hands before eating, drinking or going to thelavatory. If you do suffer irritation to the eyes or severeirritation to the skin seek medical attention.1.4.6 Spare partsOnly original Vaillant spare parts may be used.1.4.7 Manual handling guidanceDuring the appliance installation and the replacement of theheat exchanger it will be necessary to employ caution andassistance whilst lifting as the appliance or component ex-ceeds the recommended weight for a one man lift. In certainsituations it may be required to use a mechanical handlingaid. Take care to avoid trip hazards, slippery or wet surfaces.d Danger!Smell of gas. Risk of poisoning and explosiondue to a malfunction1 Introduction