VOKERA Neutro Release note

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

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(replacingBS7566whichhasbeenwithdrawn)asanalternativemeanstoachievean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.

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 
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 

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
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


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.
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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.
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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).
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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.

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2.1Indoorpositioning
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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.
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Itisthereforeessentialtomakeairventsconnectedtotheoutside.Seeexampleinfigure2.1


DetailA
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Figure2.1:Exampleofmakinganairvent.
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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.
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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
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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.
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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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