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Installation & Service Instructions Suprima HE Range - BHL.co.uk

Installation & Service Instructions Suprima HE Range - BHL.co.uk

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ac<strong>co</strong>rdance with Articles 4 or 5;(c) the placing on the market for human <strong>co</strong>nsumption ofaquaculture animals to which substances referred to in (a) havebeen administered and of processed products derived from suchanimals;(d) the placing on the market of meat of the animals referred toin (b);(e) the processing of the meat referred to in (d).(e) prelucrrii crnii prevzute la litera (d).Arti<strong>co</strong>lul 4Prin derogare de la arti<strong>co</strong>lele 2 i 3, statele membre pot autoriza:1. administrarea, pentru anumite animale de ferm, în s<strong>co</strong>puriterapeutice, de 17 estradiol, de testosteron i de progesteronsau de derivai care dau foarte uor la hidroliz <strong>co</strong>mpusul iniialdup resorbie în locul aplicrii. Medicamentele veterinare folositeîn tratamentul terapeutic trebuie s se <strong>co</strong>nformeze dispoziiilor deintroducere pe piaa prevzute de Directiva 81/851/CEE i nu potfi administrate decât de ctre un medic veterinar, sub form deinjecie sau, pentru tratamentul unei disfuncii ovariene, subform de spirale vaginale, cu excepia implanturilor, la animalelede ferm care au fost identificate în mod clar. Tratamentulanimalelor identificate trebuie s fac obiectul unei înregistrridin partea medicului veterinar responsabil. Acesta trebuie snoteze într-un registru, care poate fi cel prevzut de Directiva81/851/CEE, cel puin informaiile urmtoare:Article 4Notwithstanding Articles 2 and 3, Member States may authorize:1. the administering to farm animals, for therapeutic purposes, ofoestradiol 17 â, testosterone and progesterone and derivativeswhich readily yield the parent <strong>co</strong>mpound on hydrolysis afterabsorption at the site of application. Veterinary medicinalproducts used for therapeutic treatment must <strong>co</strong>mply with therequirements for placing on the market laid down in Directive81/851/EEC and be administered only by a veterinarian, byinjection or for the treatment of ovarian dysfunction in the formof vaginal spirals, but not by implant, to farm animals which havebeen clearly identified. Treatment of identified animals must beregistered by the veterinarian responsible. The latter must re<strong>co</strong>rdat least the following details in a register, which may be the oneprovided for in Directive 81/851/EEC:- natura tratamentului;- natura produselor autorizate;- data tratamentului;- type of treatment, - identitatea animalelor tratate.- the type of products authorized, Acest registru trebuie pus la dispoziia autoritii <strong>co</strong>mpetente, lacererea acesteia;- the date of treatment, 2. administrarea în s<strong>co</strong>puri terapeutice de medicamenteveterinare autorizate care <strong>co</strong>nin:- the identity of the animals treated. (i) alil trembolon, pe cale oral, sau substane b-agonisteecvideelor sau animalelor de <strong>co</strong>mpanie, atâta vreme cât suntutilizate în <strong>co</strong>nformitate cu indicaiile fabricantului;The register must be made available to the <strong>co</strong>mpetent authorityat its request;2. the administering for therapeutic purposes of authorizedveterinary medicinal products <strong>co</strong>ntaining:(i) allyl trenbolone, administered orally, or beta-agonists toequidae and pets, provided they are used in ac<strong>co</strong>rdance with themanufacturer's instructions;(ii) beta-agonists, in the form of an injection to induce to<strong>co</strong>lysisin <strong>co</strong>ws when calving.Such substances must be administered by a veterinarian or, inthe case of the veterinary medicinal products referred to in (i),under his direct responsibility; treatment must be registered bythe veterinarian responsible, who shall re<strong>co</strong>rd at least the detailsreferred to in point 1.Farmers shall be prohibited from holding veterinary medicinalproducts <strong>co</strong>ntaining beta-agonists which may be used for(ii) substane b-agoniste sub form de injecii, pentru inducereade to<strong>co</strong>liz la vacile parturiente.Aceast administrare trebuie efectuat de ctre un medicveterinar sau, în cazul medicamentelor veterinare prevzute lapunctul (i), sub supravegherea sa direct; tratamentul trebuie sfac obiectul unei înregistrri de ctre medicul veterinarresponsabil, cu menionarea cel puin a informaiilor prevzute lapunctul 1.Deinerea de ctre cresctor a medicamentelor veterinare cusubstane b-agoniste care pot fi utilizate în inducerea to<strong>co</strong>lizeieste interzis.Cu toate acestea, f a aduce atingere prevederilor de la punctul2 subpunctul (ii) primul paragraf, tratamentul terapeutic esteinterzis pentru animalele de producie, inclusiv pentru animalelede reproducere aflate sfâritul vieii reproductive.Arti<strong>co</strong>lul 5Prin derogare de la arti<strong>co</strong>lul 3 litera (a) i f a aduce atingerearti<strong>co</strong>lului 2, statele membre pot autoriza administrarea, pentru


Health and Safety Information for the Installer and<strong>Service</strong> EngineerUnder the Consumer Protection Act 1987 and Section6 of the Health and Safety at Work Act 1974, we arerequired to provide information on substanceshazardous to health.Small quantities of adhesives and sealants used in theproduct are cured and present no known hazards. Thefollowing substances are also present.Man-Made Mineral Fibrea) Some <strong>co</strong>mponent parts of this boiler (insulationpads, gaskets and rope seals) are manufacturedfrom man-made mineral fibre.b) Prolonged or excessive exposure to this materialmay result in some irritation to the eyes, skin orrespiratory tract.c) It is advisable to wear gloves when handling theseitems.d) Irritant dust will only be released from the items ifthey are broken up or subjected to severeabrasion. In these instances a suitable dust maskand goggles should be worn.e) Always thoroughly wash hands after installation,servicing or changing <strong>co</strong>mponents.f) When disposing of any items manufactured fromman-made mineral fibre care must be exercised.g) If any irritation of the eyes or severe irritation ofthe skin is experienced seek medical attention.© Baxi Heating UK Ltd 2008 5


2. Technical DataModels 30 <strong>HE</strong> 40 <strong>HE</strong> 50 <strong>HE</strong> 60 <strong>HE</strong> 70 <strong>HE</strong> 80 <strong>HE</strong>Heat Input - Gross kW 10.22 13.62 17.04 20.43 23.84 27.25Btu/h 34,877 46,465 58,129 69,717 81,343 92,968Heat Output (Non Condensing) kW 8.82 11.78 14.76 17.72 20.68 23.63Btu/h 30,093 40,181 50,350 60,466 70,553 80,641Heat Output (Condensing) kW 9.50 12.64 15.66 18.83 21.89 24.94Btu/h 32,430 43,111 53,431 64,232 74,703 85,105Gas Rate m 3 /h 0.98 1.30 1.63 1.95 2.28 2.60ft 3 /h 34.5 45.9 57.5 68.9 80.4 91.9Burner Pressure - Hot mbar 8.6 10.4 9.0 8.4 11.4 12.8in wg 3.44 4.16 3.6 3.36 4.56 5.12Gas Supply Pressure mbar 20 20 20 20 20 20Injector Size mm 2.8 3.1 3.5 3.9 3.9 4.1Water Content litres 2.3 - 30, 40 & 50 2.7 - 60, 70 & 80Boiler Weight kg 39.0 - 30, 40 & 50 42.8 - 60, 70 & 80(Lift/Installed - Dry)Nox Class 2 2 2 2 2 2Maximum Working Head30.5m (100 ft)Minimum Working Head150mm (6 in)Flow Temperature <strong>Range</strong> 63°C - 82°CGas Supply ConnectionFlow/Return ConnectionsCondensate System Connection15 mm Tail22 mm Copper21.5 mm PPElectricity Supply230v ~ 50HzExternal Fuse3AInternal FuseType 3.15ATPower Consumption80 Watts (excluding pump)Electrical ProtectionIP20Boiler TypeC12, C32, C52Boiler Category CAT 1 2 H 2H - G20 - 20 mbarModelSeasonal Efficiency(SEDBUK) (%)SEDBUK Declaration for<strong>Suprima</strong> <strong>HE</strong>30 86.140 86.450 86.260 86.270 86.280 86.2This value is used in the UKGovernment's Standard AssessmentProcedure (SAP) for energy rating ofdwellings. The test data from which ithas been calculated have beencertified by 0087.6© Baxi Heating UK Ltd 2008


Flow ConnectionReturn ConnectionFlow SensorOverheat SensorCasting SensorFan and Flue HoodAir Pressure Switch'O' Ring andClip JointsPrimaryHeat ExchangerSe<strong>co</strong>ndaryHeat ExchangerBurner & ElectrodesData LabelWiring CentrePCB EnclosureGas ConnectionCondensate Trap75 mm410 mm overallclearance125 mmclearanceSpark IgniterGas ValveCondensate Connection260 mm850 mm770 mm*overallclearance595 mm610 mmservicingclearance15 mmclearance5 mmclearance400 mm5 mmclearance130 mm servicing clearance50 mm installation clearance*© Baxi Heating UK Ltd 2008 7Fig. 1


3. <strong>Installation</strong> Requirements3.1 General InformationOptional ExtrasVarious flue extensions, bends, vertical flue kits, <strong>co</strong>ntrolaccessories etc. are available as optional extras. Theseare detailed in a separate publication.LiftingImportant - This product should be lifted and handled bytwo people. Stooping should be avoided, and protectiveequipment worn when necessary. Carrying and liftingequipment should be used as required, for examplewhen installing in a loft space.3.2 Legislation, Standards & Codes of PracticeThe boiler is suitable only for installation in GB and IEand must be installed in ac<strong>co</strong>rdance with themanufacturer’s instructions and the rules in force,and only used in a suitably ventilated location.Any purpose provided ventilation should be checkedperiodically to ensure that it is free from obstruction.<strong>Installation</strong>, Commissioning, <strong>Service</strong> & RepairIn GB, the installation must be carried out by aCompetent Person. It must be carried out inac<strong>co</strong>rdance with the relevant requirements and currentedition of:The GAS SAFETY (<strong>Installation</strong> and Use) REGULATIONS.The appropriate BUILDING REGULATIONS either theBuilding Regulations, The Building Regulations(S<strong>co</strong>tland), Building Regulations (Northern Ireland).The WATER FITTINGS REGULATIONS OR WATER BYELAWS inS<strong>co</strong>tland.The I.E.E. WIRING REGULATIONS.Where no specific instructions are given, referenceshould be made to the relevant BRITISH STANDARDCODES OF PRACTICE.Reference should also be made to BRITISH GASGUIDANCE NOTES FOR T<strong>HE</strong> INSTALLATION OF DOMESTICGAS CONDENSING BOILERS.Definition of <strong>co</strong>mpetence: A person who works for aCORGI registered <strong>co</strong>mpany and holding currentcertificates in the relevant ACS modules is deemed<strong>co</strong>mpetent.Important – Failure to install and <strong>co</strong>mmission this boilerto manufacturer’s instructions may invalidate thewarranty. This does not affect your statutory rights.In IE, the installation must be carried out by a<strong>co</strong>mpetent person and installed in ac<strong>co</strong>rdance with thecurrent edition of:I.S.813 “DOMESTIC GAS INSTALLATIONS”.The current BUILDING REGULATIONS.Reference should also be made to the ETCI rules forelectrical installation.In GB the following Codes of Practice apply:STANDARDB.S. 6891B.S. 5440: Pt 1B.S. 5440: Pt 2B.S. 5546B.S. 7074B.S. 5449B.S. 6798B.S. 7593B.S. 7671In IE:3.3 Gas SupplySCOPEGas <strong>Installation</strong>.Flues.Air Supply.<strong>Installation</strong> of hot water suppliesfor domestic purposes.Expansion vessels and ancillaryequipment for sealed water systems.Forced circulation hot water systems.<strong>Installation</strong> of gas fired hot waterboilers.Treatment of water in domestic hotwater central heating systems.IEE Wiring RegulationsSTANDARD SCOPEI.S. 813Domestic Gas <strong>Installation</strong>s.The following BS standards give valuable additional informationB.S. 5546<strong>Installation</strong> of hot water suppliesfor domestic purposes.B.S. 7074Expansion vessels and ancillaryequipment for sealed water systems.B.S. 5449B.S. 7593Forced circulation hot water systems.Treatment of water in domestic hotwater central heating systems.The meter and supply pipes must be capable of deliveringthe required quantity of gas in addition to the demand fromany other appliances in the house and must be governedat the meter.The pipe diameter required will depend on the boilermodel and the pipe length from the gas meter.The gas installation should be in ac<strong>co</strong>rdance withBS6891.8© Baxi Heating UK Ltd 2008


3.4 Electricity Supply230V ~ 50Hz via a fused double pole switch witha <strong>co</strong>ntact separation of at least 3 mm in bothpoles.There must be only one <strong>co</strong>mmon isolator for theboiler and its <strong>co</strong>ntrol system, it must provide<strong>co</strong>mplete electrical isolation and be fittedadjacent to the boiler.There is no method of isolating the boiler at theuser interface.The power cable to the boiler must be 4-<strong>co</strong>re tosupply permanent live, neutral, earth andswitched live.Bath or Shower RoomIf the boiler is fitted in a room <strong>co</strong>ntaining a bath or shower, itcan only be fitted in Zone 3, Figs. 2 & 3 show Zonedimensions for a bathtub. For other examples refer toBS7671.Cupboard or CompartmentA cupboard or <strong>co</strong>mpartment used to enclose the boiler mustbe designed and <strong>co</strong>nstructed specifically for this purpose. Anexisting cupboard or <strong>co</strong>mpartment may be used provided thatit is modified for the purpose. Details of essential features ofcupboard/<strong>co</strong>mpartment design including airing cupboardinstallations are given in BS6798 and BS5546.<strong>Service</strong> AccessPipes and wiring must not restrict service access tothe boilerElectrical installation should be in ac<strong>co</strong>rdancewith BS7671.WARNING: THIS BOILER MUST BE EART<strong>HE</strong>D ANDCORRECTLY POLARISED.3.5 Location of BoilerThe boiler must be mounted on a flat wall whichis sufficiently robust to take the weight of theboiler.LocationThe boiler should be fitted within the buildingunless otherwise protected by a suitableenclosure.ClearancesThe boiler requires only the clearances shownon Page 7, after installation.Combustible WallThe boiler is suitable for installation to a<strong>co</strong>mbustible wall e.g. wood cladding, providedthat the flue duct is not closer than 25 mm to<strong>co</strong>mbustible material. A metal sleeve should beinstalled to surround the flue duct to provide a25 mm annular space. Further guidance isgiven in BS5440: Pt 1.Timber FrameIf the boiler is to be fitted into a building oftimber frame <strong>co</strong>nstruction then reference mustbe made to the current edition of Institution ofGas Engineers Publication IGE/UP/7/ (Gas<strong>Installation</strong> in Timber Framed Housing).3.0 mZone 2Zone 1Zone 0Zone 3Zone 2Zone 1Zone 0WindowRecessZone 2Zone 2WindowRecessZone 2In GB OnlyWindowRecessZone 2Zone 3Zone 30.6 m 2.4 mOutside ZonesZone 32.25 mFig. 2CeilingOutsideZones0.6 m2.4 mIn GB OnlyFig. 3© Baxi Heating UK Ltd 2008 9


SinkBoilerTermination via internal dischargebranch e.g sink waste - downstreamPipe must terminateabove water level butbelow surroundingsurface3.6 Condensate DisposalThis boiler in<strong>co</strong>rporates a 75 mm trap.Ensure the disposal of <strong>co</strong>ndensate <strong>co</strong>mplies withany national or local regulations in force.Failure to install the <strong>co</strong>ndensate disposal pipework<strong>co</strong>rrectly will affect the reliable operation of theboiler.Fig. 4The pipe must always slope <strong>co</strong>ntinually downwardaway from the boiler by at least 50 mm in everymetre (approx. 2.5°). No air breaks are required inthe pipe.BoilerTermination to an internal soiland vent pipe1. The pipe should be run in a proprietary drain pipematerial e.g. PVC, PVC-U, ABS, PVC-C or PP. Metalpipework is NOT suitable for use in <strong>co</strong>ndensatedisposal systems.50 mm per metre (2.5°)Minimum fall2. The pipe should be a minimum of 21.5 mm diameterand must be supported using suitably spaced clipsto prevent sagging.Fig. 5Boiler450mm minTermination to a drain orgullyPipe must terminateabove water level butbelow surroundingsurface3. To reduce the risk of <strong>co</strong>ndensate being trapped, asfew bends and fittings as possible should be used.4. When disposing <strong>co</strong>ndensate into a soil stack orwaste pipe the effects of existing plumbing must be<strong>co</strong>nsidered. If soil pipes or waste pipes are subjectedto internal pressure fluctuations when WC's areflushed or sinks emptied then back-pressure mayforce water out of the boiler trap and <strong>co</strong>uld affect theoperation of the boiler.5. Any <strong>co</strong>ndensate pipework external to the building (orin an unheated part of it e.g. garage) should notexceed 3 metres in length and when in an exposedposition, waterproof insulation is re<strong>co</strong>mmended. It isalso re<strong>co</strong>mmended that the pipe diameter isincreased to 32 mm.Fig. 6If the boiler is fitted in an unheated location the entire<strong>co</strong>ndensate pipe should be treated as an externalrun.BoilerTermination to a purpose madesoak-awayExamples are shown of the following methods oftermination in order of preference:-500mm mini) via an internal discharge branch(e.g. sink waste) - Fig. 4.ii) to an internal soil & vent pipe - Fig. 5.iii) to a drain or gully - Fig. 6.iv) to a purpose made soakaway - Fig. 7.Holes in the soak-awaymust face away from thebuildingBS 6798 & Part H1 of the Building Regulationsgive further guidance.Fig. 710© Baxi Heating UK Ltd 2008


Terminal Position with Minimum Distance (Fig. 8)(mm)A a Directly below an opening, air brick, opening windows, etc 300B a Above an opening, air brick, opening window etc. 300C a Horizontally to an opening, air brick, opening window etc. 300D Below gutters, soil pipes or drain pipes. 25E Below eaves. 25F Below bal<strong>co</strong>nies or car port roof. 25G From a vertical drain pipe or soil pipe. 25H From an internal or external <strong>co</strong>rner. 25I Above ground, roof or bal<strong>co</strong>ny level. 300J From a surface or boundary line facing a terminal. 600K From a terminal facing a terminal (Horizontal flue). 1200From a terminal facing a terminal (Vertical flue). 600L From an opening in carport (e.g. door, window)into the dwelling. 1200M Vertically from a terminal on the same wall. 1500N Horizontally from a terminal on the same wall. 300R From adjacent wall to flue (vertical only). 300S From an adjacent opening window (vertical only). 1000T Adjacent to windows or openings on pitched and flat roofs 600U Below windows or openings on pitched roofs 2000a In addition, the terminal should be no nearer than 150 mm to anopening in the building fabric formed for the purpose of ac<strong>co</strong>mmodatinga built-in element such as a window frame. See BS 5440 Pt. 1.NOTE: The distance from a fanned draught applianceterminal installed parallel to a boundary may not be lessthan 300mm in ac<strong>co</strong>rdance with the diagram belowTerminalAssemblyFig. 9Top View Rear Flue300 minProperty Boundary LineIMPORTANT: If fitting a Plume Displacement Flue Kit,the air inlet must be a minimum of 100mm from anyopening windows or doors (see Plume DisplacementSection 3.9).*IMPORTANT:• Only ONE 25mm clearance is allowed per installation.• Under car ports we re<strong>co</strong>mmend the use of the plumedisplacement kit.• The terminal position must ensure the safe andnuisance - free dispersal of <strong>co</strong>mbustion products.PlumeDisplacementKitAir InletJ,KTUOpeningWindow or Door100mmMIN.Fig. 10RMNCDEAIIISIFLGAIBHA F HJ,KLikely flue positions requiringa flue terminal guardFig. 812© Baxi Heating UK Ltd 2008


3.8.2 Horizontal Flue Systems1. The standard flue is suitable only for horizontalapplications.XY2. Maximum permissible equivalent flue lengths is:-Horizontal Concentric 3.55mHorizontalFlues3. Any additional “in line” bends in the flue system mustbe taken into <strong>co</strong>nsideration. Their equivalent lengthsare:-Concentric Pipes:135° bend 0.5 metres93° bend 1.0 metresTwin Flue Pipe135° bend 0.25 metres91.5° bend 0.50 metresThe elbow supplied with the standard horizontal flue isnot included in any equivalent length calculations.Plume Displacement Kit60 /100 Ø1M Extensions, 45° & 93°elbows are also available - seePlume DisplacementSection 3.9NOTE: Flue length is measured from point X to Yas shown.NOTE: Horizontal flue pipes should always be installed with at least a1.5° fall from the terminal to allow <strong>co</strong>ndensate to run back to the boiler.This bend isequivalent to 1 metreACBYXThis bend isequivalent to 1 metreTotal equivalent length =A+B+C+2x90°Bends© Baxi Heating UK Ltd 2008 13


VerticalFlues(Twin Pipe)3.8.3 Twin & Vertical Flue Systems1. Maximum permissible equivalent flue lengths are:-Vertical Concentric 1.9mVertical Twin Pipe 6m*YXVerticalFlues* Both the air and flue duct can be up to 6 metreslong each.2. Any additional “in line” bends in the flue system mustbe taken into <strong>co</strong>nsideration. Their equivalent lengthsare:-Concentric Pipes:135° bend 0.5 metres93° bend 1.0 metresTwin Flue Pipe135° bend 0.25 metres91.5° bend 0.50 metresYYThe elbow supplied with the standard horizontal flue isnot included in any equivalent length calculationsNOTE: Flue length is measured from point X to Yas shown.XXTotal Equivalent Length =A+B+C+1x90°BendAll vertical and angled runs must be included,measured from the boiler adaptor (point X) tothe joint with the flue terminal (point Y). One91.5° bend or two 135° bends can beincluded without reduction of the flue length.RoofTerminalIf further elbows are required the fluelength must be reduced by the followingamounts:-Y1 metre for each 91.5° bend0.5 metre for each 135° bendBAXCThis bend isequivalent to 1 metreThe total equivalent length for thisexample is = 5.5 metres.1m extension135°bend91.5°bend1m extension135°bend91.5°bendEquivalentLength Value1m0.25m0.5mAIR DUCTN o offittings/pipes422Sub total4.0m0.5m1.0mEquivalent Length Air Duct = 5.5mEquivalentLength Value1m0.25m0.5mFLUE DUCTN o offittings/pipes422Sub total4.0m0.5m1.0mEquivalent Length Flue Duct = 5.5m14© Baxi Heating UK Ltd 2008


3.8.4 Flue AccessoriesA3BA2EAPKKey Accessory Size Baxi CodeNoFLUE GROUP AConcentric Flue System 100mm diameterA3 Teles<strong>co</strong>pic Internal Flue Kit 315-500mm 5119654A2 Teles<strong>co</strong>pic Flue (incl elbow) 5118069A Horizontal flue Terminal (incl elbow) 5118489B Flue extension 1000mm 5111074C Flue Bend 93° 5111075D Flue Bend (pair) 135° 5111085U Pipe support (painted) 100mm 5111080R Vertical flue adaptor (use with 5111078) 5111070T Vertical flue boiler adaptor 5111065P Wall Liner 5111067S Flue Terminal Deflector 5111068FLUE GROUP NTwin Flue System 80mm diameterE Flue extension (pair) 1000mm 5111087F Flue Bend (pair) 90° 5111072G Flue Bend (2 pair) 135° 5111086O Vertical flue boiler adaptor kit 5111071H Vertical flue adaptor 5111084W Pipe support (pair) 80mm 5111081CDRTFLUE GROUP A, N,Vertical Flue KitsK Vertical flue terminal (use with 5111070) 5111078L Lead tile 25°/50° 5122151M Roof <strong>co</strong>ver plate 246143N Flat roof flashing 246144GFHMU,WNLSO© Baxi Heating UK Ltd 2008 15


For Twin Flue Systems fit the adaptors as follows:-3.8.5 Vertical Flue Duct Adaptor (Fig. 11)Vertical FlueBoiler Adaptor1. Remove the flue elbow from top of the boiler andreplace with the vertical flue duct adaptor ensuring theexisting gasket is still in place.Gasket3.8.6 Twin Vertical Flue Boiler Adaptor (Fig. 12)1. Remove the flue elbow from top of the boiler andreplace with the twin vertical flue duct adaptor ensuringthe existing gasket is still in place.2. Attach the rubber spacer to the base of the adaptor.3. Fit the adaptor to the top of the boiler and secure it tothe four hole fixing plate using the long screws supplied.4. Continue to fit the twin flue system.Fig. 11Twin Vertical FlueBoiler AdaptorScrewGasketOriginalsealFour hole fixing platePosition of AdaptorStickrubberspacerhereFig. 1216© Baxi Heating UK Ltd 2008


3.8.7 For Roof TerminalsApprox1425mm1. In the case of a pitched roof 25 - 50 degrees, position thelead tile to replace/flash over existing roof tiling. Make anaperture in the roof suitable for the lower tube of the roofterminal and ensure the integrity of the roof <strong>co</strong>ver ismaintained. The adjustable plastic <strong>co</strong>llar can either bepositioned on the lead tile or the lower tube of the roofterminal prior to the final positioning of the vertical flue throughthe tile. Check the <strong>co</strong>llar is <strong>co</strong>rrectly located to suit requiredroof pitch (either 25° to 38° or 37° to 50°). From inside the roofadjust the flue to a vertical position and secure to the roofstructure with the clamp supplied.Cut the sameamount offthe Air Duct& Flue DuctAir DuctFlue Duct2. For flat roof installations the aluminium flashing must bein<strong>co</strong>rporated into the roof <strong>co</strong>vering and the appropriateaperture made in the roof decking. The vertical flue is loweredonto the flashing making sure the <strong>co</strong>llar of the flue locatessecurely with the flashing. (A mastic seal may be necessary).From inside the roof, adjust the flue to a vertical position andsecure to the roof structure with the clamp supplied.Push FitAdaptor3.8.8 Flue DimensionsThe standard horizontal flue kit allows for flue lengths between100mm and 685mm from elbow to terminal (Fig. 13).The maximum permissible equivalent flue length is: 3.55metres100mm 685mmFlue DeflectorNOTE: Each additional 45° of flue bend will ac<strong>co</strong>unt foran equivalent flue length of 0.5m.eg. 45° = 0.5m, 90° = 2 x 45° = 1m etc.3.8.9 Flue TrimFig. 13Fig. 13a1. The rubber flue trim supplied may be fitted to either theoutside wall or on the inner wall of installation.3.8.10 Terminal Guard (Fig. 14)1. When <strong>co</strong>des of practice dictate the use of terminal guards,they can be obtained from most Plumbers’ and Builders’Merchants.2. There must be a clearance of at least 50mm between anypart of the terminal and the guard.3. When ordering a terminal guard, quote the appliance nameand model number.Fig. 144. The flue terminal guard should be positioned centrally overthe terminal and fixed as illustrated.3.8.11 Flue Deflector (Fig. 13a)1. If required a flue deflector is available from your Pottertonstockist.2. Push the flue deflector over the terminal end and rotate tothe optimum angle for deflecting plume. Secure the deflectorto the terminal with screws provided.© Baxi Heating UK Ltd 2008 17


93° Elbow/PlumeOutlet Assembly0.9 metresFig. 14aO RingO RingAdaptorO Ring60Ø SupportBracket60Ø ExhaustFlue Pipe60Ø SupportBracketFlexible FlueTrim‘Jubilee’ Clip3.9 Plume Displacement Kit (Fig. 14b)Kit No 5118638Content of kit1 0.9m 60/100 Concentric Flue1 1m 60 Dia Exhaust Flue Pipe1 Adaptor2 60 Dia Support Brackets1 93° Elbow/Plume Outlet Assembly1 Flexible Flue Trim3 “O” Rings1 ‘Jubilee Clip1 Boiler Elbow1. This kit is re<strong>co</strong>mmended for installations where the<strong>co</strong>ndensate plume emitted from the flue may cause anuisance or affect the surroundings.2. The terminal must be positioned outside the building withthe air inlet facing downward and outlet <strong>co</strong>nnection upwards.60/100ØConcentric FlueFig. 14bElbow3. The plume outlet must always be at least 45° to the wall,with the ‘peak’ uppermost to prevent rain entry (Figs. 15 & 16),and be at least 2 metres above ground level. It must besecured as shown in Fig. 12a. The plume outlet must also beat least 500mm from the air inlet in any direction (Fig. 16).45°45°Outlet must be atleast 45° fromwall face‘Peak’ UppermostNOTE: The outlet must be positioned so that any<strong>co</strong>ndensate plume is directed away from adjacent surfaces.There must be a <strong>co</strong>nstant fall along the entire length of theflue system from the outlet back to the boiler.4. It is possible to reduce or increase (with the addition ofextensions) the length of either or both the 60/100 <strong>co</strong>ncentricand 60Ø exhaust.5. Standard <strong>co</strong>ncentric flue extension kits may be addedbetween the boiler elbow and the terminal assembly.6. The minimum length of the <strong>co</strong>ncentric flue is 100mm whenmeasured from the edge of the flue elbow.Fig. 15500mm Min.IMPORTANT: The maximum equivalent length of<strong>co</strong>ncentric flue is:-3.55 metres <strong>Suprima</strong> (30,40,50,60 <strong>HE</strong>)3.0 metres <strong>Suprima</strong> (70,80 <strong>HE</strong>)Additional bends may be fitted in the <strong>co</strong>ncentric flue, butthe equivalent length must be reduced by 1 metre (93°elbow) or 0.5 metres (45° elbow).Air Inlet at BottomFig. 167. 60Ø 1 metre extensions (including support bracket), andadditional 93° & 45° elbows are available. Any additional 93° &45° elbows must be ac<strong>co</strong>unted for when calculating fluelengths.NOTE: Permitted positions of the plume outlet relative todoors, windows etc. are the same as for <strong>co</strong>nventional<strong>co</strong>ncentric flues as detailed in the main <strong>Installation</strong> &Servicing <strong>Instructions</strong> and BS5440 Pt. 1. It is NOTnecessary to fit a terminal guard over the air inlet or theplume outlet.18© Baxi Heating UK Ltd 2008


Graph Line F is suitable for <strong>Suprima</strong> 30, 40, 50, 60 <strong>HE</strong>Graph Line G is suitable for <strong>Suprima</strong> 70, 80 <strong>HE</strong>60 Ø Exhaust (metres)201816141210864FG60 Ø Exhaust (metres)201816141210864FG3.9.1 Determining Permissible LengthsIn the graph the solid line diagonal represents therelationship between the <strong>co</strong>ncentric flue assembly(and any extensions) and the 60Ø exhaust (andany extensions or additional bends).2001 23Concentric 60/100 Flue (metres)Example 1Flue Lengths - Not Permissible2001 23Concentric 60/100 Flue (metres)Example 2Flue Lengths - OKExample 1 - Not PermissibleIf, for instance, a <strong>co</strong>ncentric length of 2.5 metres wasrequired and the 60Ø exhaust needed to be 16metres the graph shows that this <strong>co</strong>mbination wouldNOT be permissible as the intersection point would beabove the solid diagonal line.60 Ø Exhaust (metres)2018161412108FGExample 2 - Flue Lengths OKWhere both lengths have been determined they canbe applied to the graph to check that the installation ispermissible. For example, if it was known that 1 metreof <strong>co</strong>ncentric flue and 6 metres of 60Ø exhaust wererequired, the values <strong>co</strong>uld be applied to the graph asshown in Example 2. As the point of intersection ofthe dotted lines is below the solid diagonal line, the<strong>co</strong>mbination of lengths is shown to be acceptable.6420060Ø Exhaust1 23Concentric 60/100 Flue (metres)Example 3Flue Lengths - OKExample 3 - Flue Lengths OKIn the example shown, assume that the <strong>co</strong>ncentricpart of the flue needs to be 2 metres long. Find theposition of ‘2’ on the horizontal axis of the graph andthen project upwards to the solid diagonal line. This isrepresented by the vertical thick dotted line. Wherethis dotted line intersects with the solid diagonal lineon the graph, project across to the vertical axis. Ascan be seen this <strong>co</strong>rresponds with 5.5 metres.Therefore, the total equivalent length of the 60Øexhaust can be up to 5.5 metres. Any elbowequivalences must be ac<strong>co</strong>unted for i.e. 93° elbowsare equal to 1 metre, each 45° elbow to 0.5 metres.XYSupportBracket93° ElbowFlue Length - Worked ExamplePotterton <strong>Suprima</strong> 80 <strong>HE</strong>Concentric 60/100 FlueExtensionIn Fig. 18 opposite an additional 93° elbow has beenincluded in the 60Ø exhaust. with 2 x 1metreextensions which have been cut to 0.25metres andfitted. The waste is discarded.Fig. 17To calculate total length:-Concentric Flue2 x 0.25 metre Lengths = 0.5 metres1 x 93° Elbow = 1 metreTotal 60Ø Exhaust =1.5 metresAdditional AccessoriesA - 93° Elbow 5117381B - 45° Elbow (Pair) 5117382C - 1 metre 60Ø Extension 5117380Fig. 18After <strong>co</strong>nsulting the table in Example 3 it can bedetermined that the <strong>co</strong>ncentric flue <strong>co</strong>uld be up toapproximately 6.25 metres long.© Baxi Heating UK Ltd 2008 19


3.9.2 General Fitting Notes1. Cut a hole in the external wall which the <strong>co</strong>ncentric flueassembly will pass through. The hole should allow the flueto fall back to the boiler at an angle of at least 1.5°.Min. 2 metres2. When <strong>co</strong>mpleted the terminal must be at least 2 metresabove ground level (Fig. 19).3. Measure and cut to size the <strong>co</strong>ncentric assembly andany extensions that are being used.4. Insert the <strong>co</strong>ncentric assembly through the hole fromoutside the building.Fig. 19Flue Trim5. If required, the flexible flue trim should be fitted prior tothis as it cannot be fitted after. Use the large ‘Jubilee’ clipto secure the trim to the flue (See Fig. 20, trim showndotted), with the screw part of the clip at the bottom.6. Connect any extensions or elbows that are being usedto the <strong>co</strong>ncentric assembly. Engage the extension, elbowor <strong>co</strong>ncentric assembly in the boiler flue elbow. Fit theboiler flue elbow to the boiler adaptor.7. Ensure that the <strong>co</strong>ncentric assembly and any extensionsfall back to the boiler at an angle of at least 1.5° and thatthe external air inlet is to the bottom.SpigotFig. 2050mmAdaptorPosition of ‘Jubilee’Clip screw8. Use suitable brackets to support the <strong>co</strong>ncentricassembly and any extensions, and make good inside andoutside.9. The 60Ø exhaust can now be fitted. Slide the adaptorover the plain end of the 60Ø exhaust (Fig. 22) andengage the exhaust in the terminal. Slide the adaptor downover the spigot. Mark and drill the adaptor, using a 2mmbit, as shown in Fig. 21. Secure the adaptor to the spigotusing one of the screws supplied.Fig. 2230mmFig. 2110. If it is necessary to shorten the 60Ø exhaust or any ofthe extensions, the excess material must be cut from theplain end of the pipe.11. Determine the position of the 60Ø exhaust and markon the wall a suitable position for the support bracket. Ifextensions are being used, a support bracket is supplied ineach kit.12. Drill the wall, and fit the bracket(s) using the plug andscrew provided.Fig. 2330mm13. Mark and drill the 60Ø exhaust, using a 2mm bit, asshown in Fig. 23. Complete the installation of the 60Øexhaust, securing in the brackets.Fig. 2414. Fit the 93° elbow/plume outlet and secure with the tworemaining screws supplied. Ensure the plume outlet is atleast 45° to the wall and that the ‘peak’ is uppermost (Fig.24).20© Baxi Heating UK Ltd 2008


Plume OutletElbow3.9.2 General Fitting Notes (<strong>co</strong>nt.)15. For aesthetic purposes it is permissible to route the60Ø exhaust in an enclosed box, but the air inlet andplume outlet MUST remain in free air.500mm Min.16. It is also possible to separate the plume outlet fromthe 93° elbow to allow the flue to be installed as shownin Fig. 25.Fig. 2517. To do this, first slacken the two screws retainingthe plume outlet to the elbow, and remove the outlet(Fig. 26). The elbow can now be used to <strong>co</strong>nnect thevertical to horizontal 60Ø exhaust (Fig. 25). Retightenthe screws in the elbow.18. The outlet can now be fitted into the female end ofan 60Ø extension piece. It must be secured using twoof the screws supplied in the bag with the ‘Jubilee’ clip.Fig. 2630mm19. Mark the female end of the extension at 30mm asshown in two positions, directly opposite each other(Fig. 27).20. Using a suitable bit (e.g. 2mm), drill through theextension and outlet. Secure using two of the screwssupplied.Fig. 2721. The remaining screw must be used to secure theadaptor to the <strong>co</strong>ncentric terminal.200mm Min.22. When the plume outlet is positioned under abal<strong>co</strong>ny or other projection (Fig. 28) it must protrude atleast 200mm (it is not necessary to extend it furtherthan this).23. When under bal<strong>co</strong>nies or projections it ispermissible to rotate the <strong>co</strong>ncentric flue length up to70°, clockwise or anti-clockwise (Fig. 29), if there isinsufficient space to <strong>co</strong>nnect vertically.24.This will allow the <strong>co</strong>nnection of the exhaust to theoutlet spigot.Fig. 2825. All other minimum & maximum dimensions must beadhered to, and the air inlet positioned such that it willnot be subject to rain entry.70°Outlet SpigotConcentric Flue Length(shown end-on)Fig. 29© Baxi Heating UK Ltd 2008 21


3.10 Water Circulating SystemsThe boiler is suitable for use with fully pumped openvented and sealed systems with an indirect <strong>co</strong>il typehigh efficiency cylinder.The following <strong>co</strong>nditions should be observed on allsystems:• The static head must not exceed 30.5 m (100ft)(3 bar) of water or be less than 150 mm (6 in).• The flow pipe from the boiler must always be higherthan the return pipe.• To ensure <strong>co</strong>rrect operation, the pump must be wiredto the boiler terminal block.3.10.1 Treatment of Water Circulating SystemsAll recirculatory water systems will be subject to<strong>co</strong>rrosion unless they are flushed and an appropriatewater treatment is applied.To prevent this, follow the guidelines given in BS 7593“Treatment of water in domestic hot water centralheating systems” and the treatment manufacturersinstructions.Failure to flush and add inhibitor to the system mayinvalidate the boiler warranty.Treatment must involve the use of a proprietarycleanser, such as BetzDearborn Sentinel X300 orX400, or Fernox Superfloc and an inhibitor such asBetzDearborn Sentinel X100, or Fernox MB-1 orCopal.Full instructions are supplied with the products, forfurther information <strong>co</strong>ntact BetzDearborn (+44 151 4209563) or Fernox (+44 1799 550 811) directly.It is important to check the inhibitor <strong>co</strong>ncentration afterinstallation, system modification and at every servicein ac<strong>co</strong>rdance with the inhibitor manufacturer’sinstructions. (Test kits are available from inhibitorstockists.)3.10.2 System DesignPipe SizingThe flow and return <strong>co</strong>nnections on the boiler are 22mm. The sizes of the system flow and return pipesfrom the boiler should be determined by normalmethods, ac<strong>co</strong>rding to the system designrequirements. See Fig. 30. and Table 2.To ensure <strong>co</strong>rrect circulation, it is essential to vent all airfrom the system prior to <strong>co</strong>mmissioning the boiler.System Drain Off PointsDrain off points should be fitted in the pipework close tothe boiler and in the low points of the system.Plastic PipeworkIf plastic pipe is used for the central heating circuit theremust be a run of at least 2 metres of uninsulated <strong>co</strong>pperpipe from the boiler flow and return <strong>co</strong>nnectionsincluding any branches.3.10.3 Bypass RequirementsThe system must be designed to always provide a routefor water to circulate between the boiler flow and return.Best Practice is to use an automatic bypass although itmay be possible to use an existing fixed bypass such asa landing or bathroom radiator fitted with two lockshieldvalves or a bypass fitted with a balancing valve. SeeFig. 30.Systems with Two Port ValvesWhere a pair of two port zone valves are used, the totallength of the by-pass circuit taken from the boiler<strong>co</strong>nnections should be greater than 4 metres of 22 mmpipe. The bypass should be capable of maintaining aminimum flow through the boiler of 4.5 litres/min (1gal/min).Systems with Thermostatic Radiator Valves (TRV’s)Where mechanically operated thermostatic <strong>co</strong>ntrolvalves are used, the total length of the by-pass circuittaken from the boiler <strong>co</strong>nnections should be greaterthan 2 metres of 22 mm pipe. The bypass should becapable of maintaining a minimum flow through theboiler of 9.0 litres/min (2 gal/min).3.10.4 System ControlsFor optimum operating efficiency, the heating systeminto which the boiler is installed should include a <strong>co</strong>ntrolsystem. Best Practice suggests such a system should<strong>co</strong>mprise: a programmer, room and cylinderthermostats, <strong>co</strong>ntrol valves giving boiler interlock.Frost Protection - SystemThe system pipework may require insulation and theprotection of an additional frost thermostat.If the system is drained isolate the external gas andelectrical supplies.Air VentsIt is re<strong>co</strong>mmended that automatic air vents are fittedwithin the system pipework to prevent air locks duringfilling, <strong>co</strong>mmissioning and normal operation.22© Baxi Heating UK Ltd 2008


3.10.5 Boiler ProtectionHydraulic resistance• A frost thermostat is fitted within the boiler <strong>co</strong>ntrolswhich operates even if the temperature <strong>co</strong>ntrol knobis at the ( ) position. The boiler will operate asnecessary to maintain the boiler temperature abovefreezing.• The boiler is fitted with a timed pump overrun that willoperate for around 2 minutes after boiler shutdown.• The boiler <strong>co</strong>ntrol will operate the pump for around 2minutes every 24 hours to maintain free running ofthe pump.Pressure drop (metres)2.221.81.61.41.210.80.60.40.200 5 10 15 20 25 30 35 403.10.6 Pump RequirementsFlow rate (litres/min)• Resistance through the heat exchanger is shown inthe graph and Table 2 opposite.• If other <strong>co</strong>ntrol valves are used in the system theresistance through them, quoted in theirmanufacturers literature must be taken into ac<strong>co</strong>unt.3.10.7 Further Details• Further details on systems are shown in BS5449 andBS6798Min. 11°C Max. 20°CWater Flow Rate (l/min) and Boiler Resistance (mbar/m)30 <strong>HE</strong>40 <strong>HE</strong>50 <strong>HE</strong>60 <strong>HE</strong>70 <strong>HE</strong>80 <strong>HE</strong>l/min11.515.219.222.926.730.5mbar21.234.153.073.597.5124.6m0.220.350.540.750.991.27l/min6.38.410.612.614.716.8mbar6.310.816.923.731.941.2m0.060.110.170.240.320.42Table 2WaterlevelAuto air ventIndirect <strong>HE</strong>CylinderMax. 30.5m (100ft)Min. 150mm (6")150 mmMax.Auto air ventPump withisolating valvesAutomaticby-pass orexistingby-passbalancingvalveOptional3 portvalveAlternative existingby-pass arrangementusing the bathroomradiator fitted with twolockshield valvesOptional2 portvalvesFlow2m **ReturnTop ofcasing22mmBoiler drain offpoint inside casingBoiler** If plastic pipe is used for the central heating circuit there must be a run of at least2 metres of uninsulated <strong>co</strong>pper pipe from the boiler flow and return <strong>co</strong>nnectionsincluding any branches.Typical Fully Pumped System fitted with a Close Coupled Feed and Open Vent© Baxi Heating UK Ltd 2008 23Fig. 30


3.10.6 Sealed SystemsSystem ComponentsAll <strong>co</strong>mponents used in the sealed system must besuitable for operation at 110°C and at the maximumpressure allowed by the pressure relief valve (normally3 bar).Pressure Relief ValveA pressure relief valve, set to a maximum 3 baropening pressure must be fitted.Pressure Relief Valve Discharge PipeThe pressure relief valve discharge pipe should be notless than 15mm diameter and run <strong>co</strong>ntinuouslydownward. It should be routed in such a manner thatno hazard occurs to occupants or damage caused towiring or electrical <strong>co</strong>mponents.Consideration must be given to the possibility thatboiling water/steam <strong>co</strong>uld discharge from the pipe.The discharge must be outside the building, but mustnot be above a window, entrance or other publicaccess.The end of the pipe should terminate facing down,towards the wall and preferably over a drain.Pressure GaugeA pressure gauge of minimum range 0-4 bar with a fillpressure indicator must be <strong>co</strong>nnected to the system,preferably at the same point as the expansion vessel ina position easily visible from the filling point.Expansion VesselAn expansion vessel <strong>co</strong>mplying with the requirementsof BS 4814 must be <strong>co</strong>nnected to the system close tothe inlet side of the circulating pump in ac<strong>co</strong>rdance withthe manufacturers instructions, the <strong>co</strong>nnecting pipebeing unrestricted and not less than 15mm nominalsize.The vessel size can now be determined from theinformation in Table 3 where V = System size in litres.Vessel Charge Pressure (bar)Initial System Pressure (bar)Expansion Vessel Size (litres)Table 30.51.0V x 0.111.51.5V x 0.125Where a vessel of the calculated size is not available, thenext available larger size should be used.If the system is extended, the expansion vessel volumemay have to be increased unless provision has beenmade for extension.Filling PointA filling point <strong>co</strong>nnection on the return pipework must beprovided to facilitate initial filling and pressurising and anysubsequent water loss replacement/refilling.The filling method adopted must be in ac<strong>co</strong>rdance with allrelevant water supply regulations and use approvedequipment. Your attention is drawn to, in GB, GuidanceG24.2 and re<strong>co</strong>mmendation R24.2 of the WaterRegulations Guide. and IE, the current edition of I.S. 813“Domestic Gas <strong>Installation</strong>s”.The system may be filled or replenished by means of atemporary <strong>co</strong>nnection between the circuit and a supplypipe, provided a ‘Listed’ double check valve or some otherno less effective backflow prevention device ispermanently <strong>co</strong>nnected at the inlet to the circuit and thetemporary <strong>co</strong>nnection is removed after use - See Fig. 32.Further Details on Sealed SystemsFurther details of sealed system design are shown inBS5449, BS6798 and BS7074.The volume of the vessel should be suitable for thesystem water <strong>co</strong>ntent and the nitrogen or air chargepressure should not be less than the system statichead.CalculationTo size the expansion vessel it is first necessary tocalculate the volume of water in the system in litres.The following volumes may be used as a <strong>co</strong>nservativeguide to calculating the system volume.Boiler Heat Exchanger: 2.7 litresSmall Bore Pipework: 1 litre per kW of system outputMicro Bore Pipework: 7 litresSteel Panel Radiators: 8 litres per kW of system outputLow Water Capacity Radiators: 2 litres per kW of system outputHot Water Cylinder:2 litres24© Baxi Heating UK Ltd 2008


Auto air ventIndirect <strong>HE</strong>CylinderSafetyvalvePressuregaugevisible fromfilling pointPump withisolating valvesOptional3 portvalveOptional2 portvalvesFlowExpansionvesselAuto air ventAutomaticby-pass orexistingby-passbalancingvalveAlternative existingby-pass arrangementusing the bathroomradiator fitted with twolockshield valves2m **Return22mmBoilerManualFillingandMake UpPoint** If plastic pipe is used for the central heating circuit there must be a runof at least 2 metres of uninsulated <strong>co</strong>pper pipe from the boiler flow andreturn <strong>co</strong>nnections including any branches.Specification of all <strong>co</strong>mponents ≥ 110˚C and ≥ 3 barTypical Fully Pumped Sealed SystemFig. 31StopValveTemporaryHoseDoubleCheckValveStopValveFromMainsSealed system manual filling andmake up point requirementsFig. 32© Baxi Heating UK Ltd 2008 25


Centre LineFlowBoilerSinkBoilerBoilerBoilerCentre LineReturnCondensate Pipe - This must be plastic and always slope<strong>co</strong>ntinually downwards from the boiler by at least 50 mmin every metre (approx. 2.5˚).No air breaks are required in the <strong>co</strong>ndensate pipe.Termination via internal dischargebranch e.g. sink waste - downstreamPipe must terminate abovewater level but belowsurrounding surfaceTermination to a drain or gullyTermination to an internal soiland vent pipe450mm MinPipe must terminateabove water level butbelow surroundingsurfaceTermination to a purpose made soak-away500mm MinHoles in the soak-awaymust face away fromthe buildingThe dimensions shown ensure the flue isinstalled with the <strong>co</strong>rrect rise of 53 mmin every metre (approx. 3˚) from the boiler.'B'Front Clearance275 mm15 mmOperationalclearanceand610 mmServicingclearanceFor the boiler to operate <strong>co</strong>rrectly all air mustbe vented from the system prior to<strong>co</strong>mmissioning and the system itself mustbe suitably vented.'A'Dimension 'A'centre of flueelbow to insideof wall100 mm500 mm1000 mm1500 mm2000 mm2500 mm3000 mm3500 mmDimension 'B'verticaloffeset required5 mm27 mm53 mm79 mm105 mm131 mm158 mm184 mm4. <strong>Installation</strong>MINIMUM CLEARANCECut with3° RiseMINIMUM CLEARANCE4.1 Unpack & Prepare the Wall & BoilerCore DrillFlue Hole105mm (4")minimumor127mm (5")mimimumfor InternalFitment KitSTAND OFF KIT-Top Mounting PointsWALL MOUNTING BRACKETDrill and plug - 7 mmSecure using woodscrews suppliedBOILER OUTLINEThese instructions assume you have chosen asuitable boiler location which will also allow<strong>co</strong>rrect installation of the <strong>co</strong>ndensate and fluesystems.BOILER OUTLINEKey <strong>Installation</strong> Points - Refer to the <strong>Installation</strong> & <strong>Service</strong> and/or Flue Kit <strong>Instructions</strong> for more information.!50mm per metre (2.5˚)Minimum Fa l!!Boiler MountingBracket!Woodscrews1. Carefully unpack the boiler, leave thepacking around the base of the boilerfitted. Do not discard other packaging untilall the items are ac<strong>co</strong>unted for and/or theboiler is installed.2. Place the mounting template in the proposedboiler position ensuring that it is level.BOILER OUTLINEBOILER SECURING POINTDrill and plug - 7 mmSecure using woodscrew suppliedor optional Anti-theft kitSTAND OFF KIT-Bottom Mounting PointsCentre PointGas<strong>co</strong>nnectionBOILER OUTLINEMinimum clearances, fixing points,pipework centrelines and flue incline areall ac<strong>co</strong>unted for on the template.Centre LineGasMINIMUM CLEARANCECentre LineCondensateMINIMUM CLEARANCEBoiler Securing PointWoodscreworAnti-theft kit3. Mark the flue hole, mounting bracket fixingpositions (two), boiler securing point andpipework centre lines then remove thetemplate.Boiler Mounting Bracket4. Drill (7 mm drill) and plug the three mountingholes.Fig. 33Lifting pointsin base of packingDrill (on an incline, approx. at least 1.5° toensure the <strong>co</strong>ndensate drains back to theboiler) a 105mm diameter hole for the fluethrough the wall or a 127mm diameter hole ifthe Internal Fitment Kit is being used.5. Secure the mounting bracket to the wallusing two No. 12 x 2" woodscrews(supplied).6. Lift the boiler by the packing at the baseonto the mounting bracket.7. Remove the packing from the base andsquare boiler to the wall using the alignmentscrews on the back panel. Pull the door paneldown and remove the two securing screws.Slide off the <strong>co</strong>ntrols <strong>co</strong>ver assembly and putsafely aside.8. Ensure the boiler is secured to the wall(using the third No. 12 x 2" woodscrew)through the hole in the bracket at the rear ofthe boiler case.Note: The anti-theft securing kit (Part No.238035POT) may be used in place of thethird woodscrew if required.26© Baxi Heating UK Ltd 2008


4.2 Install the FlueThese instructions are for standard horizontalrear and side flue applications which have amaximum horizontal installed length of 700 mmwhen fitted.The flue elbow is supplied set to the rear.For side outlet slacken the screws andturn the elbow to the required positionand re-tighten screws. Ensure all flueelbow seals are still <strong>co</strong>rrectly located.If using a left hand side flue applicationwe re<strong>co</strong>mmended you make the flow andreturn water <strong>co</strong>nnections before fittingthe flue.1. Measure dimension X from the centre pointof the flue elbow to the outside of the walland add 50 mm.2. Mark the dimension to be cut onto the flue asshown. Re-check measurements and ensurethe inner flue support bracket is pushedbeyond the cut line before cutting.Cut outer tube and then cut the inner tubeflush with the outer. Deburr both tube ends.3. Slide the wall seal along the flue and intoposition behind the terminal.4. To ease assembly of the flue system applythe sili<strong>co</strong>ne grease (provided) to the innerseal of the flue elbow. Pass the flue throughthe wall and push firmly into the flue elbow.The flue is <strong>co</strong>rrectly located when the visualcheck holes are blocked.5. Ensure the terminal shroud is vertical asshown opposite.Rear flueWall sealDimensionXVisual check holewasteStandard Horizontal FlueMinimum dimension X including wallthickness = 160 mmMaximum dimension X = 700 mmDimension X + 50 mmSide flueDimensionXSili<strong>co</strong>ne grease to beapplied to the singlelip inner seal6. Make good the wall around the flue.7. Refer to Page 17 for flue deflector and orterminal guard requirementsInner flue support bracketWall sealSili<strong>co</strong>ne Grease Safety DataThe grease supplied is not regarded as a health or environmental hazard undercurrent legislation.First Aid MeasuresInhalation - Not relevantIngestionNever make an un<strong>co</strong>nscious person vomit or drink fluids ! Rinse mouth thoroughlyand drink plenty of water. Get medical attention if any dis<strong>co</strong>mfort <strong>co</strong>ntinues.Skin ContactRemove affected person from source of <strong>co</strong>ntamination. Get medical attention ifirritation persists after washing.Eye ContactMake sure to remove any <strong>co</strong>ntact lenses from the eyes before rinsing. Promptlywash eyes with plenty of water while lifting the eye lids. Continue to rinse for atleast 15 minutes. Get medical attention if any dis<strong>co</strong>mfort <strong>co</strong>ntinues.Orientation ofshroud mustbe vertical asshownTerminal guardif requiredFig. 34© Baxi Heating UK Ltd 2008 27


Schematic wiring with boiler interlockThere must be both mains Permanent Live and Switched Live from thesystem to the boiler terminal block for the boiler protection devices tooperate <strong>co</strong>rrectly.The pump must be wired to the boiler terminal block for the pump overrunto operate <strong>co</strong>rrectly.Boiler PCB4.3 Electrical ConnectionsFor the boiler to operate <strong>co</strong>rrectly itrequires a four wire <strong>co</strong>nnection. Theremust be mains Permanent Live,Neutral, Earth and a Switched Livefrom the system.For the pump to operate <strong>co</strong>rrectly itmust be wired back to the ‘Pump’section of the boiler terminal block.LNMainsESwLLPumpNEEnsure that the length of the earthwires are such, that if the supplycables are pulled out of the cableclamps the live and neutral wiresbe<strong>co</strong>me taut before the earth wire.Typical Frost Statbrbg/y1. Remove the securing screw and pull thewiring centre (See Fig. 1) fully forward.TypicalPottertonExternalProgrammerFused 3AMains Supplybrbg/yTo System WiringPumpsuppliedfromboilerbr - brownb - blueg/y - green yellowThe wiring must be routed through thecable clamp.Connect the power supplies as follows;Permanent Live to 'Mains L'.Neutral to 'Mains N'.Earth to 'Mains E'.Switched Live (from system) to ‘SwL’Pump Live to ‘Pump L’Pump Neutral to ‘Pump N’Pump Earth to ‘Pump E’Boiler PCB2. If fitting a frost thermostat do so asdescribed in the kit.3. If fitting the optional integral programmer(Part No. 5111963) do so as described inthe kit.Typical Frost StatLMainsN ESwLLbrPumpNbEg/yCHoutDHW onPumpsuppliedfromboilerDHWoffoutTo System WiringOptionalIntegralProgrammer4. Carry out preliminary electrical systemchecks i.e. Earth Continuity, ShortCircuit, Polarity and Resistance to Earth.For safety, leave the electrical supplyswitched off and isolated until boilerinstallation is <strong>co</strong>mplete.See Page 31 for typical system wiring.brFused 3AMains Supplybg/ybr - brownb - blueg/y - green yellowFig. 35From System Wiring28© Baxi Heating UK Ltd 2008


4.4 Connect the Gas Supply1. Ensure that the gas supply is isolated atthe meter.Gas <strong>co</strong>ckOpen2. Solder the gas tail (supplied) to main gassupply before <strong>co</strong>nnecting the tail to thegas <strong>co</strong>ck.To prevent blow lamp damage to thewiring and <strong>co</strong>ndensate trap, anysoldering of gas pipework must bedone away from the boiler.Do not turn the gas supply on untilsoundness test and boiler installationare <strong>co</strong>mplete.SecuringscrewsRemove 'O' Ring from gas <strong>co</strong>ckbefore soldering pipework4.5 Connect the Water System1. Connect system pipework to the boiler.Compression fittings must be used toallow future dis<strong>co</strong>nnection.We re<strong>co</strong>mmend using two spannerswhen making the <strong>co</strong>nnections.Heat from a blowlamp <strong>co</strong>uld damagethe case seals.5530CaseSealsFig. 36Flow 22 mmReturn 22 mm5835Front ViewWallMountingBracket304.6 Connect the CondensateSystem1. The <strong>co</strong>ndensate <strong>co</strong>nnection is a 21.5 mmPP pipe. To allow access for servicing,we re<strong>co</strong>mmend the first <strong>co</strong>nnection tothe system is a ‘push fit’ type.2. Prime the <strong>co</strong>ndensate system to seal thetrap.Method 1 - Pour 1/2 litre of water downthrough the flue products (inner) tube atthe terminal.Method 2 - Pour 1/2 litre of water via aplastic tube inserted into one of the fluesample points on the flue elbow.3. Check the the <strong>co</strong>ndensate disposalsystem for soundness.Plastic nut & washerFlat face union pipeDisposal pipeworkSideViewFig. 37Fig. 38© Baxi Heating UK Ltd 2008 29


5. Wiring DiagramsBoiler WiringbororAir PressureSwitchbCastingThermistorb - bluebk - blackbr - browng/y - green/yellowor - orangep - purpley - yellowr - redw - whiteyyFlowThermistorbkGasValverg/ybkbkOverheatStatSparkGeneratorSparkElectrodebbrbkp pFanwFlameDetectionElectrodeEarth toBurnerg/yg/y g/yg/ybr b r ybg/yL N E SwL L N EMains PumpFig. 3930© Baxi Heating UK Ltd 2008


Typical System WiringTypical System Wiring - mid position valve (Y Plan)External ProgrammerMains supply direct to wiring centreThe Pump can be wired through the wiring centrebut must be wired direct to Pump L, N & Earthon boiler terminal block.Boiler PCBb - bluebr - browng/y - green yellowLN E SwL L N EMainsPumpThis Appliance must be Earthedbrb g/yFrost statTypical wiring centre12 way shownL1 2 3 4 5 6 7 8 9 10NE4 5 7 8 9 106Fused 3AMains Supplybrg/ybCNCNCNCNORoomstatCylstatMid position valve11121112OptionalexternalprogrammerLNECH onHW onHW offPumpsuppliedfromboilerTypical System Wiring - two zone valves (S Plan)External ProgrammerThe Pump can be wired through the wiring centrebut must be wired direct to Pump L, N & Earthon boiler terminal block.Boiler PCBb - bluebr - browng/y - green yellowFused 3AMains SupplyFrost statLN E SwL L N EMainsPumpThis Appliance must be Earthedbr brbg/ybg/yPumpsuppliedfromboilerOptionalexternalprogrammerLNECH onHW onNot used HW offTypical wiring centre12 way shownL1 2 3 4 5 6 7 8 9 10NE4 5 7 8 9 10611111212CNCNCNCNORoomstatCylstatCH Zone valve DHW Zone valveFig. 40© Baxi Heating UK Ltd 2008 31


6. Commissioning6.1 Commission the Water, Electrical and GasSystemsWaterThe system should be <strong>co</strong>ld flushed. After re-filling,all air must be vented from the system before theboiler is <strong>co</strong>mmissioned.On Sealed Systems, manually test the safety valveand fill until the pressure gauge registers 1.5 bar.ElectricalEnsure that the preliminary electrical safety checksdetailed on Page 28 have been carried out.GasThe whole of the gas installation including themeter must be checked for soundness and purgedac<strong>co</strong>rding to in GB BS 6891 and in IE I.S. 813“Domestic Gas <strong>Installation</strong>s”.6.2 Commission the BoilerEnsure the top <strong>co</strong>ver and door are <strong>co</strong>rrectlyfitted.1. Ensure that the main electricity supply is ‘On’, the‘Mains On’ (Green) light will flash.2. Ensure that the main gas supply is turned ‘On’ andthat the boiler gas service <strong>co</strong>ck is in the ‘On’position.3. Check that the programmer and any other external<strong>co</strong>ntrols, if fitted, are in an ‘On’ position and callingfor heat.4. Turn the temperature <strong>co</strong>ntrol knob to its maximumsetting, the ‘Burner On’ (Green) light will flash andafter several se<strong>co</strong>nds, the burner will lightautomatically.5. When the burner flame has established, the ‘BurnerOn’ (Green) light will be on and flames will be visiblethrough the sight glass.9. Turn the temperature <strong>co</strong>ntrol knob to ( ) positionand check that the burner shuts down.10. Remove the pressure gauge, re-fit the screws andcheck for gas soundness.11. Re-fit the <strong>co</strong>ntrols <strong>co</strong>ver assembly and secure withthe screws previously removed.6.3 Flush the system1. Drain the system whilst still hot.2. Re-fill, vent the system, make a final check forwater soundness and add a suitable inhibitor.3. Complete any labels supplied with the inhibitor andattach to the boiler for future reference.4. Set the system flow rate to give the requiredtemperature rise. Set the bypass flow rate.5. On sealed systems fill until the pressure gaugeregisters 1.5 bar. Set the pressure gauge pointer tothe system design pressure.If the boiler fails to lightAfter five attempts (possibly due to air in the gassupply) it will lockout and the ‘Lockout’ (Red) light willbe on.To reset - Turn the temperature <strong>co</strong>ntrol knob to ( )position. Wait until the ‘Lockout’ (Red) light switchesoff. Turn the temperature <strong>co</strong>ntrol knob back to therequired setting. The boiler should reset and return tonormal operation.If the boiler fails to operateCheck for fault or lockout <strong>co</strong>des on the <strong>co</strong>ntrol displayand refer to one or a <strong>co</strong>mbination of the following:-User Operating label on the boiler. Wiring Diagram,Control Sequence and Fault Finding sections in theseinstructions.6. With the burner running, check the boiler for gassoundness using leak detection fluid.7. Check that the gas supply pressure, burnerpressure and gas rate are <strong>co</strong>rrect. See data labelor refer to Page 6.If adjustment of the burner pressure is requiredfollow Section 9.4.8. Check that the burner flames are blue and stable.Lockout(Red)Fig. 41Burner On(Green)Mains On(Green)TemperatureControl Knob32© Baxi Heating UK Ltd 2008


6.4 Final AdjustmentsTemperature ControlTurn the temperature <strong>co</strong>ntrol knob to adjust the radiatorsurface temperature and hot water tap temperaturebetween approximately 63°C and 82°C.Overheat ThermostatThe boiler will require re-setting if an overheat <strong>co</strong>nditionoccurs (the ‘Lockout’ (Red) light will flash).Other Boiler ControlsNo further setting or checking is necessary as all boilermounted <strong>co</strong>ntrols are fail safe.System ControlsCheck that any other external <strong>co</strong>ntrols <strong>co</strong>nnected in thesystem, such as thermostats are set as required. If aprogrammer is fitted, set the time and programme therequired settings as shown in the instructions suppliedwith the programmer.6.5 Advise the UserOn <strong>co</strong>mpletion of the installation, the installer should handover all instructions and demonstrate the operation of theboiler and its associated <strong>co</strong>ntrols.Advise the user of the precautions necessary to preventdamage to the system and to the building in the event ofthe system remaining inoperative during frost <strong>co</strong>nditions.Advise the user that this boiler has frost protection, pumpoverrun and pump anti-seize features (See 3.9.4).Advise the User that for <strong>co</strong>ntinued efficient and safeoperation of the boiler it is important that adequateservicing is carried out at least once a year.6.6 DocumentationCarefully read and <strong>co</strong>mplete all sections of the“Benchmark” Commissioning Checklist at the rear of thispublication that are relevant to the boiler and installation.The details will be required in the event of any warrantywork. This publication must be handed to the user for safekeeping and each subsequent regular service visitre<strong>co</strong>rded.For IE, it is necessary to <strong>co</strong>mplete a “Declaration ofConformity” to indicate <strong>co</strong>mpliance to I.S. 813. Anexample of this is given in I.S. 813 “Domestic Gas<strong>Installation</strong>s”. This is in addition to the “Benchmark”Commissioning Checklist.© Baxi Heating UK Ltd 2008 33


7. Control SequenceStandbySwitched live - ONOn/Off switch - ONIndicate thermistor faultNoCheckthermistorsgive validreadingsPump ONFlowtemperature> 100CYesIndicate thermistor faultIndicate circulation faultIndicate APS stuck faultNoNoNoCheckthermistorsread within 8CCheckcasting thermistor< 76CAPSOffYesPump overrun2 minsFlowtemperature> 100C oroverheatstat OffIgnitionattempt orcastingthermistorfaultPost purge5 secsYesOverheat LockoutNoFlow temp< (setpoint -6C)Safety shutdown5 minsOverheat LockoutNoFlow temp< 100CYesBurnerOffPre-purge 10 secs.NoFault<strong>co</strong>ndition> 10 minsAPS OnNoIndicate APS faultNoFlame OffIndicate false flame faultCheckflow thermistor> castingthermistorNoIndicate water circulation faultFlame OnNoIndicate false flame faultOverheatstat OffNoOverheat LockoutFlowtemperature< setpointNoIgnition 5 secs.Ignition LockoutAir Proving LockoutFlame OnNo5 ignitionattempts madeNoOverheatstat OffNoOverheat LockoutAPS OnNoAPS Off 4times in15 minsNoOverheatstat OffNoOverheat LockoutCheckthermistorsgive validreadingsNoIndicate thermistor faultCheck castingthermistor< 80CNoCastingtemp exceeded4 timesCirculation LockoutNoGo to **RunSwitchedlive OnOn/Off switchOnNo** from"casting tempexceeded4 times"Fig. 4234© Baxi Heating UK Ltd 2008


8. Fault Finding GuideLockout CodesKey= off = flashing = onFAULT CONTROL DISPLAY RESETElectrical Supply FaultLockout Burner MainsIgnition LOCKOUTLockout Burner MainsManualOverheat LOCKOUTLockout Burner MainsManualFalse Flame FaultLockout Burner MainsAutomaticWater CirculationLOCKOUTLockout Burner MainsManualPCB Fault(Replace PCB)Lockout Burner MainsAutomaticAir ProvingLOCKOUTLockout Burner MainsManualAPS Stuck FaultLockout Burner MainsAutomaticFlow Thermistor FaultLockout Burner MainsAutomaticCasting Thermistor FaultLockout Burner MainsAutomaticFig. 43© Baxi Heating UK Ltd 2008 35


Electrical Supply FaultRefer to the boiler wiring diagramLockout Burner MainsoffoffoffThis boiler requires both apermanent live and a switched live.Both need to be aminimum of 190V to functionIs there 230Vat boiler terminal block(Mains L and N) ?NoNo Permanent Live to boilerCheck systems <strong>co</strong>ntrolsand system wiringYesIsterminal blockfuse OK ?NoCheck for shorts on pump,fan and gas valveReplace if shortedand replace fuseYesIs there 230Vat 6 way plug to PCB(Mains L and N) ?NoCheck wiring fromterminal block to PCBYesReplace PCBFig. 4436© Baxi Heating UK Ltd 2008


Ignition LockoutRefer to the boiler wiring diagramLockout Burner MainsonoffonIs more than17 mbar dynamicpressure at thegas valveinlet ?NoIn<strong>co</strong>rrect gas supplyto boilerYesAre Live andNeutral to boilerreversed ?YesCorrect the Live andNeutral <strong>co</strong>nnectionsReplace gas valveReplace PCBNoYesYesUsing meter testdial, does gas flowduring ignitionsequence ?NoIs there 200 VDCat the gas valveduring ignitionsequence ?NoCheck the<strong>co</strong>ntinuity of thegas valve leadNoLead from PCBto gas valve faultyYesRectify wiringNoReplace spark generatorYesYesCheck the<strong>co</strong>ntinuity of thespark generatorleadYesRefit8 way <strong>co</strong>nnector.Is there 230 V tospark generatorwhen gas valveopens ?NoYesReplace PCBIs therea spark ?NoIsspark electrodedamaged ?NoIs theelectrode gapbetween3 and 4 mm ?NoIs wiring fromspark generatorto electrode OK ?Yes No NoReplace electrodeSet gap to <strong>co</strong>rrect position over falme stripRectify wiringYesYesNoNoDoes flameestablish and thenextinguish ?YesIs flamedetection electrodedamaged ?NoIs theflame detectiongap between3 and 4 mm ?YesIs wiring tothe detectionelectrode OK ?YesFig. 45© Baxi Heating UK Ltd 2008 37


Overheat LockoutRefer to the boiler wiring diagramLockout Burner MainsWait until the temperature at the flow pipe is


Water Circulation LockoutRefer to the boiler wiring diagramLockout Burner MainsThis indication can be activated by two faults:1) Flow direction is checked after 1 minute of burner fire. If the casting thermistor readsa higher temperature than the flow thermistor, the fault occurs. This does not cause a lockout.onflashingflashing2) Adequate circulation is checked <strong>co</strong>ntinuously during burner fire. If the casting thermistorexceeds 80C the fault occurs. A lockout is activated if this happens 4 times.Is the systemfull of waterNoFill system with water andbleed out all airYesIs the pumprunningNoResetlockoutIs there 230V atthe terminal block(Pump L and N) ?NoCheck the<strong>co</strong>ntinuity of thePump L and Nwiring from theterminal blockto PCBNoReplace PCBYesYesPump or pump wiring faultYesWiring from terminal blockto PCB faultyIs theresufficient waterflow around thesystem ?NoOpen bypass/TRV'sand check for blockagesYesIs theflow in theright directionNoRectify flow and returnpipeworkYesReplace PCBAir Proving LockoutLockout Burner MainsonoffoffThe APS is not maintaining its signal.This has occurred 4 times from a switchedlive being present and the burner being litCheck for blockages in the <strong>co</strong>ndensatesystem, the flue system and the heatexchangersFig. 47© Baxi Heating UK Ltd 2008 39


Air Pressure Switch Stuck FaultRefer to the boiler wiring diagramLockout Burner MainsflashingoffoffSwitch the boiler onYesReplace PCBAfter 15se<strong>co</strong>nds,does the fan runYesNoUnplugthe 12 way<strong>co</strong>nnector from PCB.Is there <strong>co</strong>ntinuitybetween the2 orangewiresYesNoRefit the12 way<strong>co</strong>nnector to PCB.Unplug one APS leadSwitch boileron. Does fanrun ?NoOpen circuit onthe wiring. RectifyNoIsthere230 Vat thefan ?Unplug theAPS leadsIs there <strong>co</strong>ntinuityacross thethe APSNoShort circuit on thewiring - rectifyYesReplace fanYesAPS stuck in theOn position. ReplaceSwitch offUnplug the12 way <strong>co</strong>nnector andboth APS leadsIs there <strong>co</strong>ntinuitybetween the2 orangewiresNoOpen circuit on theAPS wiring - rectifyYesCheck thetubes from venturito the APS. Check forblockages in <strong>co</strong>ndensatesystem, flue andheat exch.NoAPS stuck in Off positionReplaceYesRectify faultFig. 4840© Baxi Heating UK Ltd 2008


Thermistor Fault - Flow and CastingRefer to the boiler wiring diagramLockout Burner MainsThere are two types of fault which can occur:1) The thermistors are reading outside of limits (this is checked beforethe PUMP is switched on and during Burner on).2) The difference between the thermistor readings are outside oflimits (this is checked during PUMP on stage).on flashing onFlow thermistor faultLockout Burner MainsCheck that the Pump is running and there isadequate circulation of water.flashingflashingCasting thermistor faultoffUnplug the 12 way<strong>co</strong>nnector to the PCBMeasure resistancebetween the 2 bluewires (casting thermister)and the 2 yellow wires(flow thermister)Are theresistancesbetween0.5kΩ - 20kΩand within25% ofeach otherYesReplace PCBNoRemove <strong>co</strong>nnectorsfrom the thermistorsMeasure resistanceof thermistorsDoresistancesvary from onespreviouslymeasuredYesWiring from PCBto thermistor faultyNoReplace Faulty Thermistor---------------------This can be identified byremoving both thermistorsand holding the brassprobe between your fingersThe resistance should beapproximately 8kΩFig. 49© Baxi Heating UK Ltd 2008 41


9. Servicing• For reasons of safety and e<strong>co</strong>nomy the boiler shouldbe serviced annually by a <strong>co</strong>mpetent person.• Any 'O' rings, seals or gaskets disturbed duringservicing or replacement of parts must bevisually inspected and replaced if worn ordamaged.• Important: Always test for gas soundness afterservicing or replacement of gas carrying<strong>co</strong>mponents and carry out functional checks of<strong>co</strong>ntrols.• Ensure you are using the <strong>co</strong>rrect Potterton approvedspare part when replacing any items as in<strong>co</strong>rrect orsub standard parts <strong>co</strong>uld affect the operation of theboiler.• Some seals on this boiler are special ‘wet’ typedesigned for use with <strong>co</strong>ndensing boilers.9.1 Servicing Procedure1. With the outer case <strong>co</strong>rrectly fitted, fire the boiler andcheck that the flames visible through the sight glassare blue and stable. Yellow flame and excessivelifting indicate poor <strong>co</strong>mbustion.2. Turn the temperature <strong>co</strong>ntrol knob to ( ) position andcheck that the burner shuts off. Allow the boiler to<strong>co</strong>ol and isolate the gas and electricity supplies.42The boiler cannot be isolated at the userinterface. Isolate the electricity supply at themains supply point.Warning: The 70 and 80 models are fitted with a325Vdc fan. Ensure the mains supply is isolated.3. Pull the door panel down and remove the twoscrews. Carefully slide the bottom <strong>co</strong>ver out andaway from the boiler.4. Remove the three screws and carefully lift the outercase away from the boiler.5. Remove the <strong>co</strong>mbustion chamber <strong>co</strong>ver - See 9.9.6. Visually check for debris/damage and clean orreplace if necessary the following.a. Combustion Chamber Insulation - replace ifrequired, see 9.12.b. Fan - remove as shown in 9.9.Examine the fan impeller and carefully clean ifnecessary. Check the <strong>co</strong>ndition of the sensingtubes at the Fan and Air Pressure Switch.c. Burner - remove if required, see 9.10.Brush the burner top and check that the flameports are clear. Any blockage may be removedwith a fine wire brush. Turn the burner upsidedown and tap gently to remove any debris(Protect the electrodes).d. Electrodes - remove if required, see 9.10.If the electrodes require cleaning wipe the surfaceusing a solvent.e. Injector - remove if required, see 9.11.Omit this operation if the gas rate is <strong>co</strong>rrect,otherwise clean by blowing through. Do NOTclear the injector with a pin or wire.f. Condensate trap - remove if required, see 9.13.Place a vessel underneath to catch the<strong>co</strong>ndensate then remove the trap drain plug. Takecare as the <strong>co</strong>ndensate <strong>co</strong>uld be hot. Clear outany debris then re-prime the trap, see 4.6.g. Primary heat exchanger - remove flue hood,see 9.9.Place a sheet of paper under the heat exchangerthen using a flat blade tool (Part No. 907736),scrape the flueway fin surfaces in a downwardmovement. This will ensure that most of thedeposits will be <strong>co</strong>llected on the paper.h. Se<strong>co</strong>ndary heat exchanger - remove the hoodand sump as shown in 9.15 and clean asrequired.j. Check the <strong>co</strong>ndition of all electrical cables and<strong>co</strong>nnectors.k. On re-assembly ensure that the outer white caseis <strong>co</strong>rrectly fitted and that the sealing strip fitted tothe door is forming a tight seal with the boilercasing.7. Inspect the flue terminal for blockage and integrity,rectify if necessary.8. Inspect the <strong>co</strong>ndensate disposal system for damage,rectify if necessary.9. Carry out a functional test of the <strong>co</strong>ntrols and checkthe gas rate.10.Check the dilution of the system inhibitor and top upas required. Failure to check and <strong>co</strong>rrect inhibitor<strong>co</strong>ncentration may damage the heat exchanger.11.Complete the relevant <strong>Service</strong> Interval Re<strong>co</strong>rdsection of the ‘Benchmark’ Commissioning Checklistat the rear of this publication.© Baxi Heating UK Ltd 2008


Flow ConnectionReturn ConnectionFlow SensorOverheat SensorFlue Sample PointCasting SensorAir Pressure SwitchFan and Flue Hood'O' Ring andClip JointsPrimaryHeat ExchangerSe<strong>co</strong>ndaryHeat ExchangerBurner & ElectrodesData LabelWiring CentrePCB EnclosureCondensate TrapGas ConnectionSpark IgniterGas ValveCondensate ConnectionFig. 50© Baxi Heating UK Ltd 2008 43


9. Parts Replacement9.2 General Access1. Isolate the supplies as detailed in 9.1.2.2. Pull the door panel down and remove the twoscrews. Carefully slide the bottom <strong>co</strong>ver outand away from the boiler.3. Remove the three screws and carefully liftthe outer case away from the boiler.9.3 PCB Enclosure9.3Dis<strong>co</strong>nnectelectrical plugs1. Perform General Access - See 9.2. Removalof the outer case is not necessary.2. Dis<strong>co</strong>nnect all electrical plugs and slide theenclosure out of its frame.Fig. 51gas <strong>co</strong>ckDis<strong>co</strong>nnectelectrical plug3. On re-assembly refer to the wiring diagramwhen re-<strong>co</strong>nnecting electrical plugs.9.4 Gas Valve1. Perform General Access - See 9.2. Removalof the outer case is not necessary.2. Note how it fits then dis<strong>co</strong>nnect the electricalplug from the gas valve.3. Remove the gas <strong>co</strong>ck by unscrewing the fourlong hexagonal head screws from the side ofthe valve.9.4Remove fourscrewsNote: Loosen the <strong>co</strong>ndensate trap securingscrews to improve access to the gas valve.Fig. 524. Using the service spanner supplied with thenew valve, remove the front screw andloosen the two rear screws securing the gasvalve to the manifold.Remove frontscrewInlet pressuretest point9.4Fig. 53Loosen rearscrewsBurner pressure test pointBurner pressure adjustment5. Slide the valve backwards and carefullyremove from the boiler.6. Re-assemble in reverse order using a new‘O’ ring. Remember to re-tighten the<strong>co</strong>ndensate trap and ensure the electricalplug to the gas valve is in the <strong>co</strong>rrectorientation.7. Check the burner pressure (see data labelfor pressures). If adjustment is required, turnpressure adjusting screw anti-clockwise toincrease pressure or clockwise to decrease.44© Baxi Heating UK Ltd 2008


9.5 Air Pressure Switch1. Perform General Access - See 9.2.2. Dis<strong>co</strong>nnect the wires at the switch.3. Note how they are fitted then dis<strong>co</strong>nnect thesensing tubes at the switch.4. Ease the front of the bracket forwards andcarefully prise the switch out of the bracket.If the bracket is removed for any reason, notethat the hole in the side face locates arounda rivet head.Ease bracket openDis<strong>co</strong>nnect tubes5. Re-assemble in reverse order, polarity is notimportant when <strong>co</strong>nnecting the wires.The <strong>co</strong>loured sensing tube fits to theouter of the two <strong>co</strong>nnections.Dis<strong>co</strong>nnect wires9.59.6 Spark IgniterFig. 541. Perform General Access - See 9.2.2. Dis<strong>co</strong>nnect ignition lead at the ignitionelectrode.3. Loosen securing screws, slide unit back toclear screws and lift away from the boiler.Loosen screws4. Dis<strong>co</strong>nnect the electrical plug. Dis<strong>co</strong>nnectignition lead if required.4. Re-assemble in reverse order.9.7 Flow & Casting Sensors1. Perform General Access - See 9.2.2. Dis<strong>co</strong>nnect the electrical plug from thesensor and unscrew the sensor from thepocket.Ignition leadElectrical plugFlow sensor9.6Fig. 553. Re-assemble in reverse order. Use a heatsink <strong>co</strong>mpound on the sensor shaft, insertand tighten to finger tight and a quarter turn.Overheat sensor9.8 Overheat Sensor1. Perform General Access - See 9.2.2. Dis<strong>co</strong>nnect the spade <strong>co</strong>nnectors from thesensor and unscrew the sensor from thepipe.Casting sensor3. Re-assemble in reverse order, polarity is notimportant when <strong>co</strong>nnecting the wires. Insertand tighten to finger tight and a quarterturn.9.79.8Fig. 56© Baxi Heating UK Ltd 2008 45


Fan motor9 - 18 shownGasketFlue hoodWarning325V d.cIsolate themains supply.Sensing tubesVenturi9.9 Fan and Flue Hooda.c fan - 30 to 60 modelsd.c. fan - 70 and 80 models1. Perform General Access - See 9.2.2. Remove the screw securing the front<strong>co</strong>mbustion chamber <strong>co</strong>ver. Pull the <strong>co</strong>verout slightly then down to unhook and lift awayfrom the boiler.3. Note how they are fitted then dis<strong>co</strong>nnect thesensing tubes from the venturi.4. Dis<strong>co</strong>nnect the electrical spade <strong>co</strong>nnectorsfrom the fan motor (30 to 60) or electricalplugs (70 to 80).5. Roll the gaitor away from the venturi towardsthe se<strong>co</strong>ndary heat exchanger.9.9Combustion chamber<strong>co</strong>ver screwGaiter6. Slide the fan and flue hood forwards andaway from the boiler.7. Remove the four screws securing the fan tothe flue hood and the screw securing theventuri to the fan.8. On re-assembly:-Remove all traces of gasket from the fluehood then attach new gasket. Fit the fan tothe flue hood and secure using four screwspreviously removed. Fit the venturi assemblyto the replacement fan.9.9Combustionchamber <strong>co</strong>verlocating lipEnsure that the flue hood locates under theclips at the rear of the chassis. The front ofthe flue hood will rise slightly under thepressure of the clips.Re-assemble all remaining parts in reverseorder. Polarity is not important when re<strong>co</strong>nnectinga.c. fan wires.Fig. 57Ensure the sensing tubes are fitted <strong>co</strong>rrectly,the <strong>co</strong>loured tube will be nearest to thefan.46© Baxi Heating UK Ltd 2008


9.10 Electrodes/Burner1. Perform General Access - See 9.2.2. Remove the <strong>co</strong>mbustion chamber <strong>co</strong>ver -See 9.9.3. Dis<strong>co</strong>nnect the ignition lead from the ignitionelectrode and the sensing lead and earthlead from the sensing electrode.Sensing electrodeIgnition electrodeRemovescrewIf replacing electrode(s), remove securingscrew(s) as appropriate.4. Remove the securing screw at the right handside, hold the burner , apply greater pressureat the right hand side and pull to dis<strong>co</strong>nnectfrom the spring clips on the support bracket.5. Transfer electrodes onto replacement burnerbefore re-fitting.Ignition lead9.106. Re-assemble in reverse order.Check that the gap between the electrode tipand the burner face is 3 - 4 mm, adjustmentcan be made by careful use of pliers.9.11 Injector1. Remove the Burner - See 9.10Ensure electrodesare sat over flameports as shownand have 3 - 4mm gapsbetween tip andburner face.9.10Fig. 58Use a 13 mm (A/F) or 1/2” (A/F) socketspanner to remove the injector.2. Unscrew the injector.Remove injector3. Re-assemble in reverse order. Use a newsealing washer on the injector and test forgas soundness.Burner supportbracketRemovescrew1RearPull forward todis<strong>co</strong>nnect fromsupport bracket2Front9.11Fig. 59© Baxi Heating UK Ltd 2008 47


9.12Location lipInsulation assembly <strong>co</strong>rrectlyfitted and held in location tabs9.12 Combustion ChamberInsulationImportant: See Section 3.1, Health andSafety information before handlinginsulation.1. Perform General Access - See 9.2.2. Remove the screw securing the front<strong>co</strong>mbustion chamber <strong>co</strong>ver. Pull the <strong>co</strong>verout slightly then down to unhook and lift awayfrom the boiler.3. Remove the Burner - See 9.10.4. Remove the two screws securing the sideand rear insulation assembly to the front ofthe chassis.5. Pull the assembly forwards and away fromthe boiler. Replace insulation pieces asrequired, replace any securing clip ifdamaged.6. Re-assemble in reverse order, ensure theinsulation assembly has located <strong>co</strong>rrectlyover the tabs at the rear of the casing belowthe casting and is NOT hanging down.9.12Insulation assembly in<strong>co</strong>rrectlyfitted9.12Fig. 6048© Baxi Heating UK Ltd 2008


9.13 Condensate Trap1. Perform General Access - See 9.2.Place a vessel underneath to catch the<strong>co</strong>ndensate then remove the drain plug. Takecare as the <strong>co</strong>ndensate <strong>co</strong>uld be hot.Spring clip2. Dis<strong>co</strong>nnect <strong>co</strong>ndensate disposal pipeworkfrom the flat faced union on the trap andswing pipework away from boiler.3. Release the spring clip securing the rubbertube to the base of the sump.4. Loosen the left hand and remove the righthand screw securing the trap to the boiler.Right handscrew5. Slide the trap to the right to release from theleft hand screw then pull the unit (<strong>co</strong>mpletewith tube) down and away from the boiler.6. Re-assemble in reverse order using a newcase seal.Pour half a litre of water into the trap to primeit before re-fitting.Ensure the tube and spring clip locate<strong>co</strong>rrectly onto the sump.7. Re-<strong>co</strong>nnect <strong>co</strong>ndensate disposal pipework.Dis<strong>co</strong>nnect<strong>co</strong>ndensatepipework9.13Fig. 61© Baxi Heating UK Ltd 2008 49


ScrewFlue duct securingbracket9.14 Primary Heat Exchanger1. Perform General Access - See 9.2.2. Drain the system as necessary.3. Remove the <strong>co</strong>mbustion chamber <strong>co</strong>ver -See 9.9.BoltNutScrew4. Drain the heat exchanger, a drain point islocated on the left hand side bottom of theheat exchanger. Attach a tube to the drainpoint, turn anti-clockwise to open and drainwater away from the electronics.5. Remove the Casting Sensor - See 9.7.9.14 Drain point3 way casting shownFig. 626. Remove the Fan and Flue Hood - See 9.9.7. Remove the Burner - See 9.10.8. Remove the Combustion Chamber Insulation- See 9.12.To ease the removal of the primary heatexchanger it may be necessary to:-- Release the flow pipe <strong>co</strong>mpression fittingabove the boiler.- Remove the clip securing the return pipefrom the se<strong>co</strong>ndary to the primary heatexchanger.9. Release the flow and return unions at theheat exchanger and lift the pipes clear.10.Remove the screw from the top right handside and bolt and nut from the left hand sidemounting brackets.11.Support the heat exchanger, spring out theleft hand mounting bracket to clear the studand withdraw the heat exchanger.12.Re-assemble in reverse order. Ensure allseals are replaced as necessary.- Ensure the return pipe is fully engagedand re-insert the pipe clip to lock it inposition. Check the joint will not pull apart.13.Check the inhibitor <strong>co</strong>ncentration when re<strong>co</strong>mmissioningthe system.14.Vent all air from boiler and system beforefiring boiler.50© Baxi Heating UK Ltd 2008


9.15 Se<strong>co</strong>ndary Heat Exchanger1. Perform General Access - See 9.2.2. Drain the system as necessary.3. Drain the Heat Exchanger - See 9.14, 4.Pipe clips4. Remove the Spark Igniter - See 9.6.To ease removal of the se<strong>co</strong>ndary heatexchanger it may be necessary to:-- Remove the Air Pressure Switch - See 9.5.- Remove the air pressure switch mountingbracket.- Remove the Fan and Flue Hood - See 9.9.- Dis<strong>co</strong>nnect se<strong>co</strong>ndary to primary heatexchanger return pipe.9.155. Remove the screw securing the flue ductmounting bracket to the inner case and removethe bracket - See Fig. 42.6. Remove the two pipe clips securing the flow andreturn pipes to the se<strong>co</strong>ndary heat exchanger.7. Remove the Condensate Trap - See 9.13. Thiswill allow access through the hole in the case tothe rear sump screw.8. Loosen the rear and remove the front sumpscrews. Carefully slide the sump forwards toremove from boiler.Sump9. Support the heat exchanger then remove thescrew and front supporting bracket.10.Manoeuvre the heat exchanger out todis<strong>co</strong>nnect the gaitor and flue duct from thehood, pull down to release the pipe ‘O’ ring<strong>co</strong>nnections and lift away from the boiler.11.Check and replace seals, washers, ‘O’ rings etcas necessary. Lubricate ‘O’ rings prior to fitting.12. Re-assemble as follows:-- Align the flow and return pipes, lift the heatexchanger slightly to engage the ‘O’ ringjoints and locate onto the rear case mountingbracket.- Re-fit the front mounting bracket and screw.- Ensure the flow and return pipes are fullyengaged and re-insert the pipe clips to lockthem in position. Check the joints will not pullapart.- Re-<strong>co</strong>nnect the se<strong>co</strong>ndary to primary heatexchanger return pipe.Spark igniter- Re-fit the sump.- Re-fit the flue duct mounting bracket andscrew.- Re-assemble all remaining parts in reverseorder.13.Check the inhibitor <strong>co</strong>ncentration whenre- <strong>co</strong>mmissioning the system.14.Vent all air from boiler and system beforefiring boiler.9.15Fig. 63© Baxi Heating UK Ltd 2008 51


10. Short Spares308216[60 to 80<strong>HE</strong>]217216[30 to 50<strong>HE</strong>]329330306332207331322206[60 to 80<strong>HE</strong>]318121206[30 to 50<strong>HE</strong>]120209219313200[70 to 80<strong>HE</strong>]305200[30 to 60<strong>HE</strong>]202Fig. 6452© Baxi Heating UK Ltd 2008


Drg. Ref. G.C. No. Description Qty Part No.120 114-852 Sight glass mica 1 238162121 114-872 Mica retainer outer 1 238106200 Fan and gasket kit 30 <strong>HE</strong> 1 5112318Fan and gasket kit 40 <strong>HE</strong> 1 5112319Fan and gasket kit 50 & 60 <strong>HE</strong> 1 5112320Fan and gasket kit 70 & 80 <strong>HE</strong> 1 5112321202 Venturi assembly 30 & 40 <strong>HE</strong> 1 5112322Venturi assembly 50 <strong>HE</strong> 1 5112323Venturi assembly 60 <strong>HE</strong> 1 5112324Venturi assembly 70 <strong>HE</strong> 1 5112325Venturi assembly 80 <strong>HE</strong> 1 5112326206 Heat exchanger - 3 way - primary 1 5113375Heat exchanger - 4 way - primary 1 5113376207 Temperature sensor 1 5113044209 114-852 Sight glass mica 1 238162216 114-854 Burner sub-assembly 30 to 50 <strong>HE</strong> 1 238244114-856 Burner sub-assembly 60 to 80 <strong>HE</strong> 1 238246217 E78-614 Electrode 2 407776219 Condensate trap assembly 1 5111451305 PCB assembly 1 5110550306 364-866 Temperature <strong>co</strong>ntrol knob 1 230981308 Igniter assembly 1 5111922313 Air pressure switch 30 <strong>HE</strong> 1 5112195Air pressure switch 40 <strong>HE</strong> 1 5112196Air pressure switch 50 <strong>HE</strong> 1 5110350Air pressure switch 60 <strong>HE</strong> 1 5112197Air pressure switch 70 <strong>HE</strong> 1 5112198Air pressure switch 80 <strong>HE</strong> 1 5110393318 Heat exchanger - se<strong>co</strong>ndary 1 5113517322 Gas valve kit 1 5112334329 173-133 Burner injector 30 <strong>HE</strong> 2.8 mm dia 1 411021173-134 Burner injector 40 <strong>HE</strong> 3.1 mm dia 1 411022173-135 Burner injector 50 <strong>HE</strong> 3.5 mm dia 1 411023173-137 Burner injector 60 & 70 <strong>HE</strong> 3.9 mm dia 1 411025173-138 Burner injector 80 <strong>HE</strong> 4.1 mm dia 1 411026330 Washer - Injector 1 5112209331 Temperature sensor 1 5113044332 173-130 Overheat thermostat 1 404517© Baxi Heating UK Ltd 2008 53


GAS BOILER SYSTEM COMMISSIONING C<strong>HE</strong>CKLISTThis Commissioning Checklist is to be <strong>co</strong>mpleted in full by the <strong>co</strong>mpetent person who <strong>co</strong>mmissioned the boiler as a means of demonstrating<strong>co</strong>mpliance with the appropriate Building Regulations and then handed to the customer to keep for future reference.Failure to install and <strong>co</strong>mmission this equipment to the manufacturer’s instructions may invalidate the warranty but does not affect statutory rights.Customer NameTelephone NumberAddressBoiler Make and ModelBoiler Serial NumberCommissioned by (print name)CORGI ID NumberCompany NameTelephone NumberCompany AddressCommissioning DateTo be <strong>co</strong>mpleted by the customer on receipt of a Building Regulations Compliance Certificate* :Building Regulations Notification Number (if applicable)CONTROLS Tick the appropriate boxesTime and Temperature Control to Heating Room Thermostat and Programmable Load/Weather Optimum StartP rogrammer/Timer Room Thermostat Compensation ControlT ime and Temperature Control to Hot WaterCylinder Thermostat and Programmer/Timer Combination BoilerH eating Zone ValvesFittedNot RequiredH ot Water Zone ValvesFittedNot RequiredT hermostatic Radiator ValvesFittedNot RequiredA utomatic Bypass to SystemFittedNot RequiredBoiler InterlockALL SYSTEMSProvidedThe system has been fl ushed and cleaned in ac<strong>co</strong>rdance with BS7593 and boiler manufacturer’s instructionsYesWhat system cleaner was used?What inhibitor was used? Quantity litresCENTRAL <strong>HE</strong>ATING MODE Measure and Re<strong>co</strong>rd:Gas Rate m 3 /hr OR ft 3 /hrB urner Operating Pressure (if applicable)mbar OR Gas Inlet Pressure mbarCentral Heating Flow Temperature °CCentral Heating Return Temperature °CCOMBINATION BOILERS ONLYIs the installation in a hard water area (above 200ppm)? Yes NoIf yes, has a water scale reducer been fitted? Yes NoWhat type of scale reducer has been fitted?DOMESTIC HOT WATER MODE Measure and Re<strong>co</strong>rd:G as Ratem 3 / hr ORft 3 /hrBurnerOperating Pressure (at maximum rate)mbarORGas Inlet Pressure (at maximum rate)C old Water Inlet Temperature°CHot water has been checked at all outlets Yes Temperature °CWaterFlow Ratembarl/minCONDENSING BOILERS ONLYThe <strong>co</strong>ndensate drain has been installed in ac<strong>co</strong>rdance with the manufacturer’s instructions and/or BS5546/BS6798ALL INSTALLATIONSIfrequired by the manufacturer, re<strong>co</strong>rd the followingCO2 % OR CO ppm OR CO/CO 2 RatioThe heating and hot water system <strong>co</strong>mplies with the appropriate Building RegulationsThe boiler and associated products have been installed and <strong>co</strong>mmissioned in ac<strong>co</strong>rdance with the manufacturer’s instructionsThe operation of the boiler and system <strong>co</strong>ntrols have been demonstrated to and understood by the customerThe manufacturer’s literature, including Benchmark Checklist and <strong>Service</strong> Re<strong>co</strong>rd, has been explained and left with the customerYesYesYesYesYesCommissioning Engineer’s SignatureCustomer’s Signature(To <strong>co</strong>nfirm satisfactory demonstration and receipt of manufacturer’s literature)* All installations in England and Wales must be notified to Local Authority Building Control (LABC) either directly or through a Competent Persons Scheme.A Building Regulations Compliance Certificate will then be issued to the customer.54©Heating and Hotwater Industry Council (HHIC)www.centralheating.<strong>co</strong>.<strong>uk</strong>


SERVICE RECORDIt is re<strong>co</strong>mmended that your heating system is serviced regularly and that the appropriate <strong>Service</strong> Re<strong>co</strong>rd is <strong>co</strong>mpleted.<strong>Service</strong> ProviderBefore <strong>co</strong>mpleting the appropriate <strong>Service</strong> Re<strong>co</strong>rd below, please ensure you have carried out the service as described in the manufacturer’sinstructions.Always use the manufacturer’s specified spare part when replacing <strong>co</strong>ntrols.SERVICE 1 DateEnergy Efficiency Checklist <strong>co</strong>mpleted? Yes NoEngineer NameCompany NameTelephone NumberCORGI ID NumberCommentsSERVICE 2 DateEnergy Efficiency Checklist <strong>co</strong>mpleted? Yes NoEngineer NameCompany NameTelephone NumberCORGI ID NumberCommentsSignatureSignatureSERVICE 3 DateEnergy Efficiency Checklist <strong>co</strong>mpleted? Yes NoEngineer NameCompany NameTelephone NumberCORGI ID NumberCommentsSERVICE 4 DateEnergy Efficiency Checklist <strong>co</strong>mpleted? Yes NoEngineer NameCompany NameTelephone NumberCORGI ID NumberCommentsSignatureSignatureSERVICE 5 DateEnergy Efficiency Checklist <strong>co</strong>mpleted? Yes NoEngineer NameCompany NameTelephone NumberCORGI ID NumberCommentsSERVICE 6 DateEnergy Efficiency Checklist <strong>co</strong>mpleted? Yes NoEngineer NameCompany NameTelephone NumberCORGI ID NumberCommentsSignatureSignatureSERVICE 7 DateEnergy Efficiency Checklist <strong>co</strong>mpleted? Yes NoEngineer NameCompany NameTelephone NumberCORGI ID NumberCommentsSERVICE 8 DateEnergy Efficiency Checklist <strong>co</strong>mpleted? Yes NoEngineer NameCompany NameTelephone NumberCORGI ID NumberCommentsSignatureSignatureSERVICE 9 DateEnergy Efficiency Checklist <strong>co</strong>mpleted? Yes NoEngineer NameCompany NameTelephone NumberCORGI ID NumberCommentsSERVICE 10 DateEnergy Efficiency Checklist <strong>co</strong>mpleted? Yes NoEngineer NameCompany NameTelephone NumberCORGI ID NumberCommentsSignatureSignature55


All descriptions and illustrations provided in this leaflet have beencarefully prepared but we reserve the right to make changes andimprovements in our products which may affect the accuracy of theinformation <strong>co</strong>ntained in this leaflet. All goods are sold subject to ourstandard Conditions of Sale which are available on request.POTTERTONA Trading Division of Baxi Heating UK Ltd (3879156)A Division of Baxi GroupBrooks House, Coventry Road, Warwick. CV34 4LLAfter Sales <strong>Service</strong> 08706 017 017 Technical Enquiries 08706 049 049Website www.potterton.<strong>co</strong>.<strong>uk</strong>e&oe© Baxi Heating UK Ltd 2008Publication No. 5111596 - Iss 5 (9/08)

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