Baxi BOSTON 70 OF Benutzerhandbuch

BAXIBOSTON

ALLMODELS

FLOORSTANDINGOPENFLUE(OF)

CENTRALHEATINGBOILERS

INSTALLATIONANDSERVICINGINSTRUCTIONS

GASTYPEG20(NaturalGas)

BAXIBOSTON80OFG.C.No4107765

BAXIBOSTON70OFG.C.No4107764

BAXIBOSTON60OFG.C.No4107763

BAXIBOSTON50OFG.C.No4107762

BAXIBOSTON40OFG.C.No4107761

PleaseleavetheseInstructionswiththeUser

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InstallationInstructions

INTRODUCTION

ThisisarangeofFloorStandingOpenFlueBoilers.Thereisachoiceofoutputslistedbelow:

BOILERTYPE HEATOUTPUT

 kW Btu/h

80OF 20.8to23.4 71,000to80,000

70OF 17.8to20.5 61,000to70,000

60OF 14.9to17.6 51,000to60,000

50OF 12.0to14.7 41,000to50,000

40OF 9.1to11.7 31,000to40,000

Theboilersshareacommonoutercasewithinwhichthereisadequatespacetofitacentral

heatingpumpusingstandardfittings.

AllappliancesaredesignedforuseonGasTypeG20(NaturalGas)only,atsupplypressure20

mb.

Eachapplianceconsistsessentiallyoftwocomponents,namely:

1.COMBUSTIONCHAMBERwithheatexchanger,burnerandcontrols.

2.OUTERCASE.

InstallationRequirements

GENERAL

TheinstallationmustbecarriedoutbyacompetentinstallerandbeinaccordancewithrelevantBS

CodesofPractice,I.E.E.Regulations,GasSafetyRegulations,BuildingRegulationsandbylaws

oftheLocalWaterUndertaking.ReferencesshouldbemadetoBS6891,BS6798,BS5440Part1

&2andBS5449.

SITING

Theseappliancesmustbefittedonasuitableoutsideorinsidewallwithdueconsiderationsofthe

openfluerequirements.

TheyshouldNOTbeinstalledinabathroom,bedroomorbedsittingroom.

Aneworexistingcupboardorcompartmentusedtoenclosetheboilermustbeconstructed

specificallyforthispurpose.

DetailsofessentialfeaturesofcupboardcompartmentdesignaregiveninBS5440:2.

CLEARANCES

Theminimumverticalareasrequiredfortheappliancesdependontheapplianceratingandits

application.Thedetailsaregiveninfig5.

WorkTops

AboveBoiler(AllModels) 100mm(4in)Min

Sides SeeFig5

VENTILATION

DetailedrecommendationsforairsupplyaregiveninBS5440:2.

Thefollowingnotesareintendedtogivegeneralguidance.Theroominwhichtheopenflueunitis

situatedrequiresanairventwhichshouldbedirecttooutsideortoaroomwhichitselfhasanair

ventdirecttooutside.Wheretheboilerisinacompartmentwithairventsdirecttooutsidetheroom

containingthecompartmentdoesnotrequiretheprovisionsofadditionalventilation.

APPLIANCE MINIMUMFREE

 AREAOFAIRVENT

cm2in2

80OF 102 16

70OF 84 13

60OF 74 11.5

50OF 57 9

40OF 39 6

Theactualminimumeffectivearearequirementsofcupboard/compartmentairventsarebased

upontheratedinputoftheappliance.

Ventilationareasrequired:

APPLIANCE HIGHLEVEL

VENTAREA

LOWLEVEL

VENTAREA

  cm2in2cm2in2

80OF Compartment 271 42 542 84

70OF ventedto 232 36 464 72

60OF adjacent 212 33 423 67

50OF room 176 27 353 55

40OF  140 22 281 44

80OF Compartment 136 21 271 42

70OF ventedto 116 18 232 36

60OF outside 106 17 212 33

50OF building 88 14 176 27

40OF  70 11 140 22

FLUEARRANGEMENT

The80,70OFareintendedforconnectionwith125mm(5in)fluetube.The60,50and40OFare

intendedforconnectionwith100mm(4in)fluetube.

ForfullinformationonfluesrefertoBS5440,butthegeneralrequirementsareasfollows:

1)Theflueshouldbekeptasshortandaswarmaspossible.

2)Givemaximumpossibleverticalrisefromtheappliancebeforeusinganybends(preferablyat

least600mm(24in)).Avoidtheuseofrightangledbends.

3)Terminateinanapprovedterminalpreferablyaboveridgeheightbutatleastabovetheeavesof

apitchedroof.

4)IfTwinwalltypefluetubingistobeusedtheinnertubingoftheboileradaptormustnotproject

intothedraughtdiverteroftheboiler.Aboileradaptorwhichmeetsthisrequirementisobtainable.

5)Anexistingbrickchimneyshouldbelinedwithacidandmoistureresistantmaterialssuchas

stainlesssteelflexiblefluepipe.Thisisparticularlyimportantiftheflueisabove6.5metres(20ft)

inheightandnotwhollyinternal.WHETHERORNOTTHECHIMNEYISTOBELINEDITMUST

BESWEPTTHOROUGHLYBEFORETHEINSTALLATION.

6)Whatevertypeofflueisuseditmustbeproperlysupportedandnotsimplysupportedonthe

boiler.

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WATERCIRCULATIONSYSTEMS

(seepages8&9)

Theappliancesareonlysuitableforconnectiontoacisternsupplyandcanbeusedwith:

1)Pumpeddomestichotwaterandpumpedcentralheatingsystems.

2)Gravityflowdomestichotwaterandpumpedcentralheatingsystems.

(a)With28mmpipestheminimumcirculatingheadforgravitydomestichotwatershouldnotbe

lessthan1metre(3ft3in)measuredverticallyfromtheflowconnectionontheboilertotheflow

connectiononthecylinder.Atthishead,themaximumhorizontaldistancemeasuredalongtherun

ofthepipeshouldnotexceed3metres(10ft).Greaterhorizontaldistancesandsmallerpipesizes

areacceptablewithsuitablyincreasedheads.Allowancesmustbemadeforpipebendswhere

necessary.

(b)Iftheaboveconditionsarenoteasilymetthenpumpedprimariesshouldbeused.

(c)Gravityflowandreturnpipesshouldbelaidtomaximumfalltoavoidairlocks.

Thefollowingpointsareofparticularimportance:

1)THEWATERSPREADERMUSTBEFITTEDTOTHEPUMPEDRETURNCONNECTIONON

ALLSYSTEMS.

2)Theappliancesmustnotbeusedonsealedsystems.

3)Thesystemmustbedesignedtoavoidreversecirculation.

4)Thestaticheadmustnotexceed30metres(100ft)ofwater.

5)Theboilersmustonlybeusedwithanindirectcylinderwhendomestichotwaterisrequired.

6)Drainpointsshouldbefittedatthelowestpointsinthesystem.

7)Thesystemmustbedesignedsuchthatgravitycirculationintheheatingsystemdoesnottake

placewhenthepumpisnotrunning.

GASSUPPLY

ThegasconnectionislocatedatthebottomlefthandsideoftheapplianceandisRC1/2(1/2in

B.S.P.T.internal).Ensurethatthepipeworkfromthemetertotheapplianceisofadequatesize.Do

notusepipesofasmallersizethantheappliancegasconnection.

ELECTRICALSUPPLY

ExternalwiringmustbecorrectlyearthedandpolarisedandinaccordancewithI.E.E.Regulations.

Forwiringinstructionssee'ElectricalConnections'.

APPLIANCEDETAILS(allmodels)

HEIGHT 900mm(351/2in)

WIDTH 395mm(151/2in)

FORWARDPROJECTION 

FROMTHEWALL 535mm(21in)

BOILERTAPPINGS 4xRp1(1inBSPinternal)

and 

 1xRp3/4(3/4inBSPinternal)

ELECTRICALSUPPLY 240v~50Hz3ampfuse

GASCONNECTION Rc1/2(1/2inBSPTinternal)

MAX.WORKINGHEAD 30m(100ft)

THERMOCOUPLEOUTPUT 1015mv

APPLIANCE WEIGHTEMPTY WATERCONTENT

80OF 98kg 7litres

70OF (216lbs) (1.54gallons)

60OF  

50OF 79.2kg 5.1litres

40OF (174.6lbs) (1.12gallons)

HYDRAULICRESISTANCECHARTS

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FittingtheAppliance

PREPARATION

1)AsoundandlevelfloorwhichconformstotherequirementsoftheLocalAuthoritiesandBuilding

Regulationsmustbeprovided.

2)Selectthemostsuitablepositionfortheboilertakingdueaccountofanyclearancesrequiredfor

thesafeandproperfunctionsoftheboileranditsassociatedcontrols.

3)Manoeuvretheboilerintopositionsothatthetwospacerpipsontherearofthedraughtdiverter

touchthewall.

4)Connectthewaterflowandreturnpipes(seeBoilerConnections).

5)Connectthefluepipe,makingsurethatthefluetrimisplacedinpositionbeforethefinal

connectionismade.

6)Partiallyfittheoutercase.

7)Connecttheelectricalsupply(seeElectricalConnections).

8)Completetheinstallation(seeCommissioningtheUnit).

9)Completetheassemblyoftheoutercase.

BOILERCONNECTIONS(Fig3)

Theboilershave5waterconnections:

2xRp1(1inBSPinternal)returnconnections.

2xRp1(1inBSPinternal)flowconnections.

1xRp3/4(3/4inBSPinternal)flowconnection.

The1xRp3/4(3/4inBSPinternal)flowconnectionisforusewhenthepumpisfittedinsidethe

outercase.Forotherinstallationsthisconnectionmustbeplugged.THEWATERSPREADER

MUSTBEFITTEDTOTHEPUMPEDRETURNCONNECTIONONALLINSTALLATIONS.THE

MARKSONTHESPREADERMUSTBEBETWEENTHETWOMARKERSONTHE

COMBUSTIONCHAMBER(Fig4).

Thespreaderhasonemarkonthe80,70andhastwomarksonthe60,50,40.

Wheninstallingthepipeworkensurethat:

a)Suitableunionfittingsareusedatthefirstjointofallboilerconnections.

b)Thepipeworkwillrunthroughthecutoutsprovidedintheoutercase(Fig2).

c)Drainoffpointsareprovidedasappropriate.

d)Pipesizesaresuitableforthesystemdesign.

Pump(Fig1)

Asuitablepumpe.g.GrundfosSelectric4orSMCCommodorewithballtypeisolatingvalvesand

22mmcompressionfittingsmaybefittedinsidetheoutercase.

Thepumpshouldbeconnectedtothe3/4inflowconnectiononthefrontoftheheatexchanger

usingthefollowingstandardfittings.

A 1off Elbow3/4BSPmalex3/4BSPfemale

B 1off Conexstraightconnector3/4BSPmale

  x22mmcopper

C 3off 22mmYorkshireelbows

D 1off wheninstallingthe60,50and40

  60mmlong22mmcoppertube

D 1off wheninstallingthe80and70

  92mmlong22mmcoppertube

E 1off 100mmlong22mmcoppertube

F 1off 145mmlong22mmcoppertube

G 1off 42mmlong22mmcoppertube

Theredundantflowconnection(s)mustbeplugged.

Accuracyisimportanttoavoidthepumpandorpipeworkobstructingremovalofthetoppanelof

thecombustionchamber,orfoulingthetoppaneloftheoutercase.

OUTERCASE(Fig6)

Assembletheoutercaseinthefollowingmanner:

1)LocatetheRHsidepaneloverthepegsattheRHsideofthebaseandpressdownwardsto

secure.Whenfittingthepanelsifaccessisrestrictedthecutoutsatthetopofthebackedgeofthe

panels.canbeusedtopassthecasefixingbrackets.

2)Securethepaneltothecasefixingbracketswithtwoofthesixscrewsprovided.

3)Repeat1&2withtheLHsidepanel.

4)Securethehingesofthefaciapaneltothetwosidepanelsusingtwoofthesixscrewsprovided.

5)Atthispointtheelectricalconnectionstothefaciapanelcanbemadeandtheappliancecanbe

commissioned.(See'ElectricalConnections'and'CommissioningtheAppliance').

6)Swingthefaciapanelupwardsandsecuretothesidepanelsusingthetwoscrewsretainedto

thecontrolfacia.

7)Lifttrimclearofflueconnectionontheboilerandlocatethetoppanelonthetopoftheside

panelsandpressdowntosecure.Repositionthetriminthecutoutonthetoppanel.

8)Hookthebottomedgeofthefrontpaneloverthelugsonthebaseandswingthetopedgeback

tillthepegsatthetopofthepanellocateinthecorrespondingholes.Presstosecure.

GASCONNECTION(Fig3)

Adaptthegassupply15mm(1/2inBSP)withintheoutercasemakingthegasconnectiontothe

servicetapprovided.

fig1PumpinCasing

Page5

fig2OuterCase

fig3BoilerConnections

Fig4SpreaderinPumpedReturnConnection

fig5ClearancesWorkTops

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