VOKERA Neutro Versionshinweis

Installation

& Servicing

Instructions

THESE INSTRUCTIONS

TO BE RETAINED

BY USER

Vokèra is a licensed member of the Benchmark scheme

which aims to improve the standards of installation and

commissioning of domestic hot water systems in the UK.

Neutro

Wood pellet boiler

DearCustomer



Firstofallwewouldliketothankyouforthetrustyouhaveplacedinuswhenpurchasingoneof

ourproducts.



Wehavepreparedthisshortmanualforyouinanattempttomakeitaseasyaspossibleforyou

touseourproduct.



Wealsoadviseyoutoshowthespecifictechnicalinformationgivenonthefollowingpagesto

thoseinchargeofassemblingtheunitandmakingtheproductoperationalsothatthese

operationscanbecarriedoutascorrectlyaspossible.



LISTOFCONTENTS

Chapter1Introduction



1.1Productsizeandconstructionfeatures

1.2Producttechnicalfeatures

1.3Fuelfeatures



Chapter2Installation



2.1Indoorpositioning

2.2Fumeextractionfluefeatures

2.2.1Outsidewallextraction

2.2.2Roofextractionbymeansoftraditionalflue

2.3Hydraulicconnectionfeatures

2.4Controlboardwiringdiagram

2.5Productcoveringassemblyinstructions



Chapter3Useoftheproduct



3.1Controlpanel

3.2Lightingforthefirsttime

3.3Conditionsforuse

3.4Safetydevices

3.5Usermenu

3.6One‐wayradiocontrol

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Chapter4Maintenance



4.1Scheduledmaintenance

4.2Yearlymaintenance

4.3Unscheduledmaintenance

4.4Troubleshooting

Theseinstructionscoverthebasicprinciplestoensurethesatisfactoryinstallationofthe

stove,althoughdetailmayneedslightmodificationtosuitparticularlocalsiteconditions.

InallcasestheinstallationmustcomplywithcurrentBuildingRegulations,LocalAuthority

Byelawsandotherspecificationsorregulationsastheyaffecttheinstallationofthestove.

ItshouldbenotedthattheBuildingRegulationsrequirementsmaybemetbyadoptingthe

relevantrecommendationsgiveninBritishStandardsBS8303,BS6461andEN12391‐1

(replacingBS7566whichhasbeenwithdrawn)asanalternativemeanstoachievean

equivalentlevelofperformancetothatobtainedfollowingtheguidancegiveninApproved

DocumentJ.



PleasenotethatitisalegalrequirementunderEnglandandWalesBuildingRegulationsthat

theinstallationofthestoveiseithercarriedoutunderLocalAuthorityBuildingControl

approvalorisinstalledbyaCompetentPersonregisteredwithaGovernmentapproved

CompetentPersonsScheme.HETASLtdoperatesuchaSchemeandalistingoftheir

RegisteredCompetentPersonscanbefoundontheirwebsiteatwww.hetas.co.uk.



PREAMBLE



Wewouldliketohelpyouunderstandourmanualbylistingbrieflythemeaningofthesymbols

characterisingthemostimportantandsignificantinformationgiven:



Warningsandsafety



Importantinformation



Themanufacturerdeclinesanyliabilityforanydamagecausedtopeopleorpropertybecauseof

failuretoobservethesimplerulesofinstallationanduse,describedinthismanual.



Youarealsoremindedthatininstallingtheproductyoumustobserverelevantnationaland

localbuildingregulations.



Inpursuingcontinuousimprovementofitsproductsandcustomersatisfaction,the

manufacturerreservestherighttomakeallnecessarymodificationstoimprovethequalitylevel

ofitsproducts,withoutpriornotice.



1.INTRODUCTION



1.1PRODUCTSIZEANDCONSTRUCTIONFEATURES



Weshowbelowthemaindimensionsofthepelletheater.





 



 





TypicalDimensions

Height1015mm

Width580mm

Depth 585mm

Weight230kg

Fumeoutletdiameter 80mm

Airintakediameter 45mm

Waterpipediameter ¾”

Tankcapacity 28kg

Boilercapacity 10litres

Figure1.1.:Productsize

1.2PRODUCTTECHNICALFEATURES

OurproductsareinconformitywithBSEN13240/2001(solid‐fuelhouseholdequipment)and

subsequentamendments,andalreadyinlinewiththedraftofEuropeanstandardBSEN14785

(pellet‐heatinghouseholdequipment).



Theyarealsoinaccordancewithlegalprovisions,thatincorporatethefollowingdirectives:



‐ 89/336EEC(EMCdirective)andsubsequentamendments;

‐ 73/23EEC(lowvoltagedirective)andsubsequentamendments;

‐ 89/106EEC(fitnessforuse)andsubsequentamendments.

Belowisashortandsimplenoteonthemainperformancesandfittingsofourproduct:



PERFORMANCE

Min4.7Ratedheatinput[kW]

Max14.5

Min3.5Overallheatoutput[kW]

Max11.9

Min3Outputtoheatingsystem[kW]

 Max10.3

Min0.5OutputDirecttoroom[kW]

Max1.6

Start‐Up352Powerrequirements[W]

Rated154

Maximumworkingwater

pressure[bar]

2

Maximumtemperatureinside

theboiler(°C)

80

CombustiongastemperatureºC170

Massflowofgasesburnt[g/s]14.8

Minimumdraught[Pa]10

COvalues[%]<0.04

Max.heatablevolume[m3]320*

Min73.5Overallefficiency[%]

 Max81.5

Min1Pelletconsumption[kg/h]

Max3.1

atnominalflow9Autonomy[h]

atminimum28

Boilercapacity[litres]10

MAINFITTINGS

ControlledcombustionsystemwithfumetemperaturerecoverySerial

FumedraughtcontrolpressurestatSerial

DualcombustionsystemSerial

AirtightchamberoperationSerial

Self‐cleaningglass Serial

One‐wayradiocontrol Serial

AutomaticrelightingintheeventofblackoutSerial

Possibilityofsettingpower(5levels) Serial

Weeklyprogrammer Serial

Two‐wayradiocontrol Optional

GSMmoduleOptional

*valuescalculatedonthebasisofact10/91forroomswiththermalrequirementof30kcal/hm3and

heightof3m.Thedatagivenaboveareapproximate;theproducercompanyreservestherighttomake

anychangeinordertoimprovetheproduct’sperformance.



TheresultsinthetablewereobtainedusingcertifiedpelletbasedonAustrianandGerman

standardsDIN51731,DINPLUSandÖNORMM7135.

YouareremindedthattheESC(EuropeanStandardisationCommittee)isintheprocessof

definingfutureEuropeantechnicalstandardsthatwillgovernboththetechnicalfeaturesofthis

fuelandtheeconomicandenvironmentalaspectsassociatedwiththeproductionline.



1.3Fuelfeatures

Themainfeatureofthisheateristhatitburnsanaturalfuel(thepellet)obtainedinan

environmentally‐friendlywayfromscrapsofthetimberindustry(woodchippings,sawdust,

etc.).



Woodchippingsandsawdustfromwoodproducts,afterhavingbeendulyre‐cleanedanddried,

arecompactedinstate‐of‐the‐artveryhigh‐pressureplants,intopureroundedwoodpieces:the

pellet.Eachroundedpiececanhavevariablelengthsandthicknesses,respectivelybetween1÷3

cminlengthand6÷8mmindiameter.Thepellet’smainfeaturesarelowmoisturecontent

(below12%),itshighdensity(=600kg/m30aswellasitsregularityandcompactnessthatgive

thistypeoffuelcharacteristicsofhighcalorificpower(I.C.P.4000÷5000kcal/kg).



Figure1.1:Woodinpelletform.

Thepellettobeusedtofeedtheheatermusthavehighqualitycharacteristicssuchas,those

definedbystandardsDIN51731andÖNORMM7135,somebasicdetailsofwhichwesetout

below.



Qualitystandardfor

woodinpelletform

Unitofmeasurement



ÖnormM7135



DIN51731



DINplus

DiameterMmfrom4to10from4to10from4to10

LengthMm5xD1<505xD1

DensityKg/dm3>1,121,0/1,4>1,12

MoistureContent%<10<12<10

Ashes%<0,50<1,50<0,50

CalorificPowerKwh/kg>54.86/5.42>5

Sulphur%<0,04<0,08<0,04

Nitrogen%<0,3<0,3<0,3

Chlorine%<0,02<0,03<0,02

Powders%weight<2,3‐ <2,3

Bindingagents%ofpressedmass<22<2



1Notmorethan20%ofthepelletmayhavealengthgreaterthan7.5timesitsdiameterD.



2TheDINprohibitstheuseofanyaddedsubstance.However,thisprohibitionisnotvalidforsmallheatingsystems.



DINplusproposesthecombinationofthequalitativeparametersproposedbystandardDIN

51731andbyAustrianstandardÖnormM7135.



Thepellet,asalsostipulatedbycurrentItalianlegislationgoverningthecommercial

technologycharacteristicsoffuels(DPCM2.10.1995)mustbeproducedexclusivelywith

untreatedwoodchippings,withnootheraddedmaterials.



Itisstrictlyprohibitedtouseanysolidorliquidfuelotherthanthepelletto

feedthestove.



Inordertooptimisetheuseoftheproductwerecommendusingpelletswhich

havebeengivenaqualitycertificatebyanauthorisedbody.Theuseofpelletsother

thanthosedirectedbytheinstallermayleadtoheatermalfunctionandtothe

guaranteebecominginvalid.



Storingandevenmovingthepelletsareimportantoperationstobecarriedoutwithcare:



•Thefuelmustbestoredinadryplaceawayfromcold;

•Thepelletsmustbemovedsoastoavoidexcessive   

crumblingintofinedust.



Observanceofthesetwosimplerulesmakesitpossiblebothtoobtainbetterfuel

efficiencyandtopreservethemechanicalmovingpartsoftheapparatus.



Iftheproductiskeptoutofserviceforlongperiodsoftime(overfifteendays),the

tankmustbeemptiedofanyresidualfuel,inordertopreventanyexcessive

dampnessofthefuelcausingtheproducttomalfunction.



Ahighmoisturecontentinthepelletmaycauseittocrumbleintodust,thatcreates

agreateraccumulationofresidueinthebrazierareaandblockageofthefuelfeed

system(auger).



2INSTALLATIONINS.

Foracorrectinstallationoftheheaterandtopreventtheuprisingofpossibleproblemsduring

runningtheheater,wearesupplyingsomesimplerecommendationsfortheinstallation–

accordingtoregulationsUNI10683,UNI9615,UNI9731,UNI‐CIG7129andfollowingupdating

referredtodomesticgasuseunits.



2.1Indoorpositioning



Ourproductisaheaterthatdrawsairthatisnecessaryforitscombustionprocessdirectlyfrom

theenvironmenttobeheated.

Forthisreasonandfortheevenmoreimportantreasonofsafetyforthepeopleusingit,the

heatermustbeinstalledinasufficientlyventilatedplaceinordertoguaranteeacontinuous

flowofairatalltimes.



Itisthereforeessentialtomakeairventsconnectedtotheoutside.Seeexampleinfigure2.1



DetailA



Figure2.1:Exampleofmakinganairvent.



IncompliancewiththeindicationsreportedunderregulationUNI10683,the

airinletsmusthavethefollowingfeatures:

1.Theymusthaveaclearspaceofnotlessthan80cm2;

2.Theymustbemadeataheightclosetothefloor;

3.Theymustbesuitablyprotectedbyawiremeshorgrilleinsuchaway

thattheminimumpassagespaceisnotandmaynotbereduced;

4.Theymustbeplacedinsuchawaythattheyarenotobstructedin

anyway.



Thecorrectinflowoffreshairmaybeguaranteedbyusingapertures

towardsanadjacentroom,providedthatithasdirectventilation,and

itisnotanenvironmentwithafirehazard,suchas store‐rooms,garages

or warehouses,asregulatedbyregulationUNI10683



Ourheatershouldbeinstalledinroomswherethereisnoequipmentoperatinginairtight

conditionsinrelationtotheroom,orapparatusthatmayplacetheroomitselfinavacuumin

relationtotheoutsideenvironmentandthuscauseproblemsofpoordraughtforourproduct(

regulationUNI10683).



Combustionproductsfromourheatermustnotbeextractedintosharedflues.



Whencheckingequipmentcompatibility,itisgoodpracticetocheckwhetherthesupportplane

(floor)hasabearingcapacity(kg)thatissuitedtotheweightoftheproductitmustsustain.If

not,correctsafetymeasuresmustbetaken(eg.Load‐distributionplate).



Wheninstallingtheheater,itisadvisabletoplanasuitabledistancefromthewallsoftheroom

inordertoprovideanyaccessnecessarybothintherear(atleast20cmisrecommended)and

tothesideoftheproduct(80cmisrecommended)(forexampletocarryoutappropriate

cleaningworkcorrectly).



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