8INSTALLATION REQUIREMENTS3The following limitations MUST be observed when siting the boiler:a) The boiler is not suitable for external installation. The positionselected for installation should be within the building, unlessotherwise protected by a suitable enclosure, and MUST allowadequate space for installation, servicing, and operation ofthe appliance, and for air circulation around it. (Section 2.3and 3.4)b) This position MUST allow for a suitable flue system andterminal position. (Section 2.6 and 3.3) The combinationboiler must be installed on a flat vertical wall which is capableof supporting the weight of the appliance and any ancillaryequipment.c) If the combination boiler is to be fitted in a timber framedbuilding it should be fitted in accordance with the British Gaspublication ‘Guide for Gas Installations In Timber FrameHousing’, Institute of Gas Engineers document IGE/UP-7. If indoubt, advice must be sought from the Local Gas Supplier.d) If the appliance is to be installed in a room containing a bathor a shower, any electrical switch or control utilising mainselectricity must be so situated that it cannot be touched by aperson using the bath or shower. Attention is drawn to therequirements of the current l.E.E. Wiring Regulations(BS7671), and in Scotland the electrical provisions of theBuilding Regulations applicable in Scotland.e) A compartment used to enclose the appliance MUST bedesigned and constructed specifically for this purpose. Anexisting cupboard, or compartment, may be used provided itis modified accordingly. BS 6798 gives details of the essentialfeatures of cupboard / compartment design, including airingcupboards.f) Where installation will be in an unusual location, specialprocedures may be necessary. BS 6798 gives detailedguidance on this aspect.3.1 STATUTORY REQUIREMENTS3.2 BOILER LOCATIONIt is the law that all gas appliances are installed by a registeredperson, in accordance with the rules in force. Failure to installappliances correctly could lead to prosecution. It is in your owninterest, and that of safety, to ensure that the law is complied with.In addition to the above regulations, this appliance must beinstalled in accordance with the current IEE Wiring Regulations forelectrical installation, (BS 7671), local building regulations, theBuilding Standards (Scotland) (Consolidation) Regulations, byelaws of the local water undertaking and Health and SafetyDocument No. 635 ‘The Electricity at Work Regulations 1989’.It should also be in accordance with the relevant recommendationsin the current editions of the following British Standards and Codesof Practice: BS5449, BS5546, BS5440-1:2000, BS5440-2:2000,BS6798, BS6891, Institute of Gas Engineers document IGE/UP-7,BS7074 (Expansion vessels).IMPORTANT NOTE: Manufacturer’s instructions must NOT betaken in any way as overriding statutory obligations.12 FLUE TERMINAL POSITIONPosition MinimumspacingA Directly below an openable window, 300mm 12inair vent, or any other ventilationopeningB Below gutter, drain/soil pipe 75mm 3inC Below eaves 200mm 8inD Below a balcony 200mm 8inE From vertical drain pipes and 150mm 6insoil pipesF From internal or external corners 300mm 12inG Above adjacent ground orbalcony level 300mm 12inH From a surface facing the terminal 600mm 24inI Facing terminals 1200mm 48inJ From opening (door/window) in 1200mm 48incarport into dwellingK Vertically from a terminal on the 1500mm 60insame wallL Horizontally from a terminal on the 300mm 12insame wallM Adjacent to opening 300mm 12inN Below carport 600mm 24inO From adjacent wall 300mm 12inP From adjacent opening window 1000mm 40inQ From another terminal 600mm 24inR Minimum height 300mm 12inGAS SAFETY (INSTALLATION AND USE) REGULATIONS (CURRENT EDITION)•A••G••D,N••H,I •• F•• •J••B,C••K•• M••E ••A••G••B,C••K• •F• •F••C••K••K••G• •L • •L••P••300mmMIN.•••• Q••R•O430 mmMIN.• •OSPECIAL REQUIREMENTS FOR AVERTICALLY BALANCED FLUE