ARCHIVESHISTORIQUES
DELACOMMISSION
COLLECTION RELIEEDES
DOCUMENTS "COM"
COM(80)108
Vol.1980/0035

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COMMISSION OFTHEEUROPEAN COMMUNITIES
COM(80)108 final.
Brussels-17March1980
Proposalfora
COUNCILDIRECTIVE
amendingDirective 78/170/EEContheperformance'
ofheatgeneratorsforspaceheatingandthe
production ofhotwaterinneworexistingnon­
industrialbuildings andontheinsulationofheat
anddomestichot-waterdistribution innewnon­
industrialbuildings
(submittedtotheCouncilbytheCommission )
tev
C0MC80)108final
*./fc...'.t-is .-iJ.

«
' Justification
,a) Council directive of13February 1978 ontheperformance ofheat gene­
.rators forspace heating andtheproduction ofhotwater innew orexisting
non-industrial buiIdings .andontheinsulation ofheat anddomestic hot-water
distribution innewnon-industrial buildings (1)provides that allnew heat
generators must meet minimum performance requirements foreach fuel used ;
itprovides that compliance with theminimum performance requirements isas-'
sured bytest carried outeither atthestage ofmanufacture ofthegenerator
oratthetime ofinstallation ;-itexpressly calls for asubsequent proposal
'inrespect ofthose appliances forwhich typetesting isnotpractical
(seeArticle 1.1 last subparagraph ).
ι · " ■ ' 'ν-."
b) Irrespective ofthe type oftest ,itisuptotheMember States to
take allnecessary measures toestablish minimum performance requirements -
possibly expressed inthe form ofmaximum levels ofheat loss ;tests shall
berigorous ;equally ,Member States will nominate theagencies responsible
fortesting and seetotheadequate qualification ofoperators .Theoverall
package ofmeasures must beconceived soasnottoretard technological progress
buttoencourage competition onthebasis ofquality -particularly bywayof
intra-Community trade -tothemutual benefit ofmanufacturers andconsumers .
.c) Onthesubject ofon-site testing ofthose heat generators notsuited
totesting atthe stage ofmanufacture ,theappropriate technical study (2)
has Lead toacode ofpractice which constitutes aminimum common working base
foralltheagencies approved forthetests inquestion­
.12.
(1)Directive No.78 /170/EEC No52of23.2.1978 p.32
(2)See Directive 78/170 /EEC article 1.1 infine

-2-
d)Theprimecausesofpoorinstalledperformance are:
-missmatching ofboilerandburner(theburnercharacteristics notcorres­
pondingtothoseoftheboiler)andanypartialremediesconsequently used
*
inattemptingtocorrectthisbasicfault;
-incorrectburnersetting;
-defectiveinstallation ;
-defectiveinsulation .
Theobligationtohavethegeneratorcheckedassoonaspossibleafter
itsinstallation byacompetentneutralagencywouldbringaboutareduction
inthenumberofsuchdefects.
e)Whendetermining operatingefficiency onsite,thetestagencymust
choosetheearliestperiodsubsequenttoinstallation whichprovidesadequate
testconditionsinrespectofclimateandoccupancy.
f)Operatingefficiencywillbeexpressedinfermsofthenetcalorific
valueof.thefuelusedandwillnormallybedeterminedonsitebytheindirect
method.Thismethodwhichissuitedtoon-sitework,willensuremaximumre­
ductionofthedurationandcostofthetestwhilepermittingefficiencyto
bedeterminedwithasatisfactory degreeofaccuracy.
g)Thelossestobetakenintoconsideration are:
a)flue-gaslosses, ,
b)lossesthroughtheheatgeneratorcasing.
Fora)thefollowingwillneedtobeinvestigated :
-flue-gastemperature ;
-temperature ofairforcombustion;
-COpcontent;
-smokenumberforliquidfuels;
-tracesofcarbonmonoxideforgaseousfuels.
Forb)manufacturers datawillbeusedinconjunction withon-site
measurements inorder,primarily,tocheckthequalityoftheheatgenerator
insulation .
h)Allagenciesresponsible forcarryingoutperformancetestingofheat
generatorsundertheprovisionsofthisdirectivewill,asaminimum,apply
theproceduresofthefollowingcode.
o0o ./3

Proposalfora
COUNCILDIRECTIVE
/
amendingDirective 78/170/EEContheperformance ofheat
generatorsforspaceheatingandtheproductionofhot
waterinneworexistingnon-industrial buildings andon
theinsulation ofheatanddomestichot-waterdistribution
innewnon-industrial buildings
THECOUNCILOFTHEEUROPEAN COMMUNITIES,
HavingregardtotheTreatyestablishing theEuropeanEconomicCommunity,
andinparticularArticle103thereof/
t
HavingregardtotheproposalfromtheCommission,
HavingregardtotheopinionoftheEuropeanParliament,
HavingregardtotheopinionoftheEconomicandSocialCommittee,
(1) ...WhereasCouncilDirective 78/170/EECrequiredMemberStatestotakeall
necessarymeasurestoensurethatallnewheatgeneratorsforspaceheating ,
and/ortheproductionofhotwaterinneworexistingnon-industrial buildings
complywithminimumperformance requirements ;
WhereasthesaidDirectiveprovidesthatcompliancewiththeseminimum
performance requirements beassuredbyaninspectioncarriedouteither
atthestageofmanufacture ofageneratororatthetimeofinstallation ;
Whereasitfurtherprovidesthatinthecaseofheatgenerators subjectto■
inspection atthetimeofinstallation ,energylossesmustnotexceedthe
levelslaiddownbytheMemberStates;
whereasitprovidesthatthoseappliances whichcannotbeinspectedatthe
;tageofmanufacturewillbethesubjectofasubsequent proposalafter
..ropriatetechnicalstudieshavebeencarriedout;
0JNoL52,23.2.1978,p,32

-2-
Whereasthesestudieshavingbetendulycompleted,appropriate measuresshould
beadoptedinrespectof.thesaidheatgenerators;
Whereasthsesstudiesshowtheneedtoprovideforapossibledelaybetween
thetimeofinstallation ofageneratorforwhichinspection atthestageof
manufacture isnotpractical andthetimeatwhichanon-siteinspectionis
carriedout;
Whereas,moreover,thsesstudieshaveenabledthedraftingofacodeof
practiceindicating theprocedurestobefollowedforperformance testing
inconnection withtheinstallation ofaliquidorgaseousfuelfiredheat
generator;
Whereasitisconsequently necessaryforinspections ofthegenerators in
questiontobecarriedoutincomplaincewiththesaidcode,whichconstitutes
ninimumcommonworkingbasefor<th.eCommunity asawhole;whereastheprovisions
ofthecodedonotapplytosolid-fuelfiredgenerators;
Whereasitisappropriate that,inordertopermitreadyverification of
compliancewiththerulesrelatingtoaninspectioncarriedoutinconnection
withinstallation ,adateplatesimilartothatforgenerators inspectedat
thestageofmanufacture beprovidedfor;whereaswherenecessary,thisplate
maybereplacedbytheinspection report;whereasintheeventofnon-compliance
withtheminimumperformance requirements ormaximumlevelsofheatloss,the
inspectionreportwillbesenttotheappropriate administrative authority;
Whereastheimplementing measuresadoptedinrespectofthisDirectiveshould
incorporate themeasuresadoptedfortheapproximation ofthelawsofthe
MemberStatesinthefieldsconcerned bythisDirective andshouldbe
directedtowardsfacilitating theharmonization andstandardization work
inprogressortobeundertakeninthesefieldsbothatCommunity and
international level;
Whereasitisnecessarytoestablish,withinharmonized periodsandonthe
basisofappropriate 6tudies,asetofcommonmeasurescoveringthedetermi­
nationofminimumperformance requirements ormaximumpermittedlevelsof
heatlosstogetherwithproceduresfortheinspectionofheatgenerators
eitheratthestageofmanufacture oratthetimeoftheirinstallation ;

-3-
WhereasDirective 78/170/EECshouldtherefore beamended,
HASADOPTEDTHISDIRECTIVE :
Article 1
Directive 78/170/EECisherebyamendedasfollows:
1.Thelastsub-paragraph ofArticle1(1)isdeleted.
2.Thefollowingparagraph 3aisinsertedinArticle 1:
"3a.Heatgenerators subjecttoinspection atthetime,ofinstallation may
nolongerbemaintained inserviceunlesstheycomplywithminimum
perforamnce requirements ;complianceshallbecertifiedbymeansof.
adataplategivingtheminimumdetailsprovidedforinparagraph 3,
withtheexceptionofthelastindentregardingthefuelconsumption
ofthegenerator whenworkingtoratedcapacity.
Writtenoperating andmaintenance instructions whichenableoptimum
efficiencytobeobtainedwiththegeneratorshallbegiventothe
operatorbythesupplierofthegenerator andbeheldbytheformer
atthedisposalofthebodyresponsible forinspection .
Theinspecting bodyshallberequiredtoprovidetheoperatorandthe
supplierwithadetailedtestreport,inparticular,thisreport
muststatethedetailswhichmustbegivenonthedataplateprovided
forabove;itmayreplacethedataplateiffixingthelatterposes
particular problems.
Whenatestreportntoesthatageneratorfailstocomplywiththe'
minimumperformance requirements ,theinspecting bodyshallforward
acopytotheappropriate administrative authority."
3.Thefollowingparagraph 3bisinsertedinArticle 1:
"3b.Theperformance testingofheatgenerators atthetimeofinstallation
shallbecarriedoutincompliancewiththecodeofpracticeannexed

tothisDirective.Theprovisions ofthecodeshallconstitute a
minimumcommonworkingjpasefortestproceduresfortheCommunityas
awhole.Suchprovisionsshallnotapplytosolid-fuelfiredheat
generators."
4.Article1(4)isreplacedbythefollowing:
"4.Inthecaseofheatgeneratorssubjecttoinspectionatthetimeof
installation,minimumperforamnce requirements maybereplacedby
maximumlevelsofheatloss.
Inthiscase,theprovisionsofparagraphs3aand3bshallapply."
5.Article3isreplacedbyfthefollowing:
i Article3
MemberStatesshalladoptthemeasuresnecessarytocomplywiththis
Directiveby1January1981.
ThemeasuresprovidedforinArticle2shall,however,beadoptedby
1July1980.
Measuresrelatingtothetestingofheatgeneratorsatthetimeof
installation shallbeadoptedby1July1981."
Article2
Directive78/170/EECissupplemented bytheAnnextothisDirective.
Article3
ThisDirectiveisaddressedtotheMemberStates.

ANNEX
Codeofpracticefortheperformance testing
atthetimeofinstallation ofaliquidor *
gaseousfuelfiredheatgenerator usedina
'non-industrial buildingforspace.heatingand/or
theproductionofdomestichotwater
TESTPROCEDURE ANDDETERMINATION OFLOSSES
GENERAL
Thetestshallbecarriedoutwithafuellyingwithintherangesof
liquidfUelsorgasspecifiedbythemanufacturer .
Theexitfortheflue-gasesshallincludeprovisionformeasuring
probesandsmokesampling. _.'
Theaccuracyofeachmeasurement mustbesuchastoprovidetheoverall
accuracyofresultsspecifiedbyMemberStates.
TESTCONDITIONS
Conditionofthegenerator •
Thegereratoristobetestedintheconditioninwhichitwasdesigned
tooperateandwiththeauxiliaryequipment andtheinsulation usedinnormal
operations .
;Itmusthavehavebeenregulatedandsetbeforethetestandnoadditio
nalregulationshallbecarriedoutduringthetest.
Theleaktightnessofthegenerator andofitsconnection withthe
flueshallbecheckedbeforethetest.
Theheatexchangesurfacesmaybecleanedbeforethetesttothesa­
tisfaction ofthemanufacturer and/ortheinstaller.
Generatoroutputandoperatingratesduringthetest
Thetestwillbecarriedoutreasonably sa>nafterinstallation andpre­
ferablyattheratedoutputofthegenerator.Wherethelatterisimpossible.
»
theclosestoutputpossibletothisshouldbeused.Ifthegeneratorisdesi­
gnedtooperateattwooratseveralrates,areducedoutputtestshallalso
becarriedout.Theoutputsusedshallbeestimated byareliablemethod.
Thetestshallbecarriedoutundersteady-state conditions .Thismust
beachievedacertain beforethebeginningoftheactual
testinordertotakeaccountoftheinertiaoftheinstallation .

During thetest thefuel andcombustion airflow rates shall bekept
constant ,ifneeds bebymeans ofappropriate manipulation ofthecontrols .
Every endeavour shall bemade tokeep ,theother operating parameters constant .
Preparation for the test
Identification ofheat generator
Prior tothetest ,thetest agency shall check that thegenerator is
initsdesigned condition byexamining theinstructions forassembly andope­
ration held bytheuser andwill attach tothetest report adescription of
the heat generator andthe heating equipment .
Preliminary running
Before the test ,preliminary running maybecarried out inorder to
check thefunctioning ofthemeasuring equipment installed forthetest anjd
todetermine thepre-settings tobestipulated forthetest .Theparticipation
ofarepresentative ">fthemanufacturer ,orinstaller isstrongly recommended
atthis stage sothat additional explanations maybegiven ofthevarious
instructions and additional adjustments carried out toput theequipment into
optimum condition .
Tne test
Thetest agency shall check that theprevailing conditions arethose
required fornormal designed operation ofthegenerator and aresuch that no
disturbance occurs during thetest which islikely toadversely affect its
validity .Theagency will ,inparticular ,ensure that theouput envisaged can
bemaintained without problems andthat thecondition oftheequipment will
cause nomajor incident .
Theagency shall ensure that allmeasurements aretaken tothe requi­
reddegree ofaccuracy .More specifically ,iftheagency istousecertain
measuring instruments forming part oftheinstallation 'snormal equipment ,it
must check that these meet thedesired conditions asregards standards of
precision andaccuracy .

3.-3-
DETERMINATION OFLOSSES VIA FLUE GASES
3.1 . Free heat losses
Where there iscomplete combustion without residues ,losses via the
flue gases (qf)aregiven by
nf - rTf-Ta .9f - Kc:–™s •co,
where
Ta =Temperature ofair forcombustion (°C)
Tf =Temperature offlue gases (°C)
CO^ sPercentage volume ofCO^measured intheflue gases
Ks =Siegert constant (afunction offuel characteristics ),
(net calorific value basis )
Where there arenoMember States regulations orstandards concerning
this constant orinthe case ofafuel for which this constant isnot determi­
ned,theagency will calculate flue-gas losses byusing thecharacteristics
ofthe fuel ,itscalorific value ,thevolume ofexcess airtogether with the
specific heat ofcombustion gases asgiven bytables such asthose established
bythe 1stWorld Gas Congress (Document IGU/E/17/73).
3.2 . -Hosses through unburnt residues
Since ontheonehand theformula quoted above canonly apply where
I
los9es through unburnt residues arebelow acertain level and since onthe
other hand emissions from generator chimneys aregenerally subject tolimita­
tions ,thetraces ofunburnt residues influe gases should bechecked ,namely :
-forgaseous fuels :traces ofCO;
-forliquid fuels andliquefied petroleum gasinjected inliquid from :mea­
sure flue gasopacity with anadequate instrument andexpress theresult
asaconventional smoke number (from 0to9).
4. DETERMINATION OFLOSSES THROUGH THEHEAT GENERATOR CASING ' .
Casing losses shall beevaluated bytheagency from data provided by
themanufacturer and/orfrom surface temperatures observed during thetest .

SUMMARY
Theefficiency ofaheat generator (expressed asapercentage ofthe
net calorific yalue )should be'defined asequal to100minus the sum ofthe
losses considered inthis code ,that istP say :
il =100 -(q^+q)
where q^: flue-gas losses
q : casing losses
Flues -gas temperature (°C)
Temperature ofair for combustion <°C)
VolumeofC02<%>
K :
sSiegert constant
qf =i~Tf'T»
s C02 .(%)
qp=(%)
100 -(q^+q)(%)
/