Bsi bs en 15316 4 1 2017

1 Scope This Euro ean Stan ar d is p rt of a ser ies of s andards on the method for calculation of system ene g r q ir ement an sys em eficiencies of sp c heating systems an domes ic hot

Ener g y perfor manc e ofbuilding s -

Part 4-1: Spac heating and DHW g ener ation systems, combustion

systems (boi er , biomas ), Module M3-8-1, M8-8-1

National foreword

This British Stan ard is the UK implementation of EN 1 3 6-4-1:2 1

It supe sedes BS EN 1 3 6-3-3:2 0 , BS EN 1 3 6-4-7:2 0 an

BS EN 1 3 6-4-1:2 0 , w hich ar with rawn

The UK p rticip tion in it pr p ration was entrust ed t o Te hnical

Committ ee RHE/ 4, Heating sy st emsan wat er b sed co l ng syst ems

in buidings

A l s of org nizations r pr sent ed on this committ ee can be o tained on

r q es t o it se r tary

This publ cation does not purp rt t o inclu e al the ne es ary pro isions

of a contract Use s ar r sponsible for it cor e t a plcation

© The British Stan ards Ins itution 2 1

Publshed b BSI Stan ards Limit ed 2 1

ISBN 9 8 05 0 8 746 9

ICS 9 140.1 ; 9 140.6

Compl ance with a British Standard cannot co fer immunity from

le al o lg tio s

This British Stan ard was publ shed u de the a uthority of the

Stan ards Polcy an Strat eg C mmitt ee on 3 July 2 1

Amendments /cor ig en a is ued since publ catio

NORME EUROPÉENNE

EUROPÄISCHE NORM

Ma 2 1

ICS 9 140.1 ; 9 140.65 Su er edes EN1 3 6-3-3:2 0 , EN1 3 6-4-1:2 0 ,

EN 1 3 6-4-7:2 0

E g lish Ver sion

Energ y performance ofbui dings - Method for calculation

ofsystem energy requirements and system ef iciencies -

Part 4-1: Space heating and DHW generation systems,

combustion systems (boi ers, biomass), Module M3-8-1,

M8-8-1

Perormanc e énerg étiq e des bâtiment - Méthode de

c lcul des besoins énergétiq es et des ren ement des

sy stèmes - Parie 4-1:Systèmes de g énér ation de

chaufag e des lo aux t prod ction d'e u chau e

sanitaire, systèmes de c omb sion (chau ières,

biomas e), Mod le M3-8-1, M8-8-1

E erg etische Beweru g v on Gebäu en - Verahren zur

Bere h u g er E ergie nforderu g en u d

Nutzu gsg rade der A nlag en - Tei 4-1:

Wärme rz ug un für die R aumheizu g u d

Trin was ererwärmu g , V erbren u g ssysteme

(Heizu g skes el, Biomas e), Mod l M3-8-1, M8-8-1

This E rope n Stan ard was ap rov ed b C N on 27 February 2017

C N member are bou d to c mply with the C N/C NE E Internal R eg ulations which sip late the c n itions for g ivin this

E rope n Stan ard the satus of a national san ar d without an alteration Up-to-date lss an biblog rap ic al referenc es

c nc rnin such national san ards may be obtained on ap lc ation to the C N-C NE E Manag ement Cente or to an C N

member

This E rope n Stan ard ex iss in thre oficial ver ions (E g lish, French, German) A v er ion in an other lang uage made b

translation u der the responsibi ty of a C N member into it ow n lang uag e an notified to the C N-C NE E Manag ement

Cente has the same satus as the oficial ver ions

C N member are the national san ards bodies of Ausria, Belg ium, B lg aria, Cro tia, Cy prus, Cz ch R ep blc, Denmark, Esonia,

Finlan , Former Y ug oslav R ep blc of Mac edonia, Franc e, Germany, Gre c , Hu g ary, Ic lan , Irelan , Italy, Latv ia, Lith ania,

L x embourg, Malta, Netherlan s, Norway, Polan , Porug al, R omania, S rbia, Slovakia, Slovenia, Spain, Sweden, Switz rlan ,

Turkey an United K in dom

EUR OP A N COMMIT E FOR STAND R DIZA TION

COMITÉ EU OP EN DE NO MALISA ION

EU OPÄISCHES KOMITE FÜ NO MUNG

C N-C NE E Manag ement C ntre: Av n e Marnix 1 , B-1 0 Brus els

© 2 1 CEN A ll r ig hts of ex ploitation in an form an b any me ns reser ved Ref No EN 1 3 6-4-1:2 1 E

Contents Pag e

Eur ope n for ewor d 4

Intr oduc tio 5

1 Scope 7

2 Nor mative r efer ences 9

3 Ter ms and definitio s 9

4 Symbols and abbr ev iatio s 10

4.1 Symbols 10

4.2 A bbr eviatio s and indic es 11

5 Des r iptio of the metho 11

5.1 Output ofthe method 11

5.2 Gener al des r iptio ofthe metho 12

5.3 Input data 13

5.4 Bo ndar ies betwe n distr ibutio and gener atio sub-system 15

5.5 Default values 16

5.5.1 Default values for g ener ator efic iency at ful load and intermediate load as a func tio ofthe g ener ator powe o tput 16

5.5.2 Default value for the stand-b he t los es f g en;ls;P0 as a functio of the g ener ator power o tput 16

5.5.3 A ux ilar y ener g y 16

5.6 Pr oduct values 17

5.7 Me sur ed values 17

5.7.1 Boie eficiencies fr om me sur ed values 17

5.7.2 Me sur ed total ther mal los es, powe inp t and calculated g ains 17

5.7.3 A dditional default data and calculatio for co densing boier s 18

5.7.4 Ther mal los es thr oug h the chimney with the bur ne o at ful load f ch;o 19

5.7.5 Ther mal los es thr oug h the gener ator envelo e f g en;env 19

5.7.6 Ther mal los es thr oug h the chimney with the bur ne of f

ch;of 20

5.8 Boi e r ated output 20

6 Gener atio sub-system basic ener g y balanc e 20

6.1 He t balance 20

6.2 Ex penditur e fac tor 20

6.3 Equatio fuel he t inp t 21

6.4 Gener ator aux ilar y ener g y 21

6.5 Gener ator los es 21

6.5.1 Gener ator los 21

6.5.2 Gener ator ther mal los at spec ific load r atio βH;g en and power outp t P

x 21

6.5.3 Gener ator ther mal los calculatio at ful load 22

6.5.4 Gener ator ther mal los c alculatio at inter mediate load 22

6.5.5 Gener ator ther mal los c alculatio at 0 % load 23

6.5.6 Cor r ection fac tor b additio al tests 23

6.6 Recover able ther mal los es 23

6.6.1 g ener al 23

6.6.2 Gener ator ther mal los es thr oug h the jacket (gener ator envelo e) 23

6.6.3 Recover able ther mal los es out ofaux ilar y ener g y 23

6.7 Recov er ed aux ilar y ener g y 24

6.8 A ux ilar y ener g y 24

6.9 Gener ator ther mal o tput 24

6.1 He ting time and load factor 25

6.1 Dir ect he ted DHW he ter s 25

6.1 1 Instantaneo s elec tr ical wate he ter 25

6.1 2 Gas-fir ed domestic stor ag e water he ter s 26

6.1 3 Bo ndar y co ditions for the default values 26

6.12 Metho for domestic hot water applanc e, tested with 24 h tapping cycles 27

A nnex A (infor mativ e) A dditio al for mulas and default values for par ameter ing the boi e eficiency metho 29

A 1 Infor matio o the metho 29

A 1.1 Gener ator eficienc ies and stand-by los es 29

A 1.2 A ux ilar y ener g y 3

A 1.3 Rec over able g ener atio ther mal los es and boie locatio 34

A 2 Co ver sio of the ener gy content of ener g y car r ier s 34

A 3 Devia tio fr om default values 35

A 4 F el constants for flue g as me sur ement depending on Sieger t co stants 35

A 5 Default values for calculatio ofther mal los es thr oug h the chimney with the burne of 37

A 6 A dditio al default data and calc ulatio for c ondensing b ier s 38

A 7 A dditio al default data for g ener ator o tput and los es 39

A 8 A dditio al default data and calculatio for wate he ter s 39

A nnex B (infor mative) A dditio al for mulas and default v alues for par ameter ing the boi e eficiency metho 4

B.1 Infor matio o the meth d 4

B.1.1 Gener ator eficiencies and stand-b los es 4

B.1.2 A ux ilar y ener g y 4

B.1.3 Recover able g ener atio ther mal los es and boie locatio 4

B.2 C nver sio of the ener gy co tent of ener g y car r ier s 4

B.3 Deviatio fr om default values 4

B.4 F el constants for flue g as me sur ement depending on Sieger t co stants 4

B.5 Default values for calculatio ofther mal los es thr oug h the chimney with the burne of 4

B.6 A dditio al default data and calculatio for co densing b ier s 5

B.7 A dditio al default data for g ener ator o tput and los es 5

B.8 A dditio al default data and calculatio for water he ter s 5

A nnex C (infor ma tive) Gener al par t default values and infor matio 53

Biblog r aphy 5

Eur opean for ewor d

This document (EN 1 3 6-4-1:2 1 ) has be n pr p r d b Te h ical C mmitte CEN/TC 2 8 “ Heating

systems an wate b sed co lng systemsin buidings”, the se r tar iat of which is held b DIN

This E ro ean Stan ard shal be g iven the status of a national s an ard, eithe b publcation of an

identical tex t or b en orsement, at the lates b Novembe 2 1 , and conflcting national s an ar ds

shal be with r awn at thelates b Novembe 2 17

A ttention is drawn to the p s ibi ty that some of the element of this document ma be the subje t of

p tent rig ht CEN [an / r CENELEC] shal not be held r sp nsible for identifying any or al such p tent

rig ht

This document has be n pr p r d un e a man ate g iven to CEN b the E r opean Commis ion and the

Euro ean Fr e Tr ade A ssociation

This document super sedesEN 1 3 6-3-3:2 0 , EN 1 3 6-4-1:2 0 , EN1 3 6-4-7:2 0

In case this s an ard is used in the contex t of national or r egional legal r q ir ement , man ator y

choic s ma be g iven at national or r eg ional level for such spe ific a plcations, in p rticular for the

a plcation within the contex t of EU Dir ctives transposed into national leg al r eq ir ement

Furthe targ et groups ar e use s of the volu tary common Euro ean Union c rtification scheme for the

ene g y pe for manc of non-r sidential buiding s (EP D art.1 9) an any othe r g ional (e.g Pan

Euro ean) p rties wanting to motivate their as umptions b clas ifying the buiding ene g

pe for manc for a dedicated buiding stock

The main chang es comp r ed to EN 1 3 6-3-3:2 0 , EN 1 3 6-4-1:2 0 an EN 1 3 6-4-7:2 0 ar e:

a) the typolog y method was r mo ed;

b) the b ie cyclng method has be n ad ed for ex is ing b ie s to get the input p rameter s for the

case spe ific b ie eficiency method

A ccor ding to the CEN/ ENELEC Inte nal Reg ulations, the national s an ards org anizations of the

folowing cou tr ies ar e b u d to implement this E r opean Stan ard: Aus r ia, Belgium, Bulg aria,

Cro tia, Cyprus, Cz ch Republc, Denmark, Es onia, Finlan , F rme Yug osla Republc of Mac donia,

Franc , Ger many, Gr e e, Hu gary, Ic lan , Ir lan , Italy, L tvia, Lith ania, Lux emb urg , Malta,

Nethe lan s, Norway, Polan , Portugal, Romania, S rbia, Slovakia, Slovenia, Sp in, Sweden, Switze lan ,

Turkey an the United King dom

Intr oduction

This Eur opean Stan ard is p rt of a ser ies of s an ards aiming at international har monization of the

methodology for the as es ment of the ene g y pe formanc of buiding s, caled “ EP set of s an ards”

EP s andar ds deal with ene gy per for manc calculation an othe r lated aspe t (lke system sizing )

to provide the buiding ser vic s conside ed in the E BD dir ctive

CEN/TC2 8 deals with heating systemsin buidings Subje t cover ed b CEN/TC 2 8ar e:

— ene g y pe for manc calculation for heating systems;

— inspe tion of heating sys ems;

— design of heating systems;

— ins alation an commis ioning of heating systems

This s an ar d is inten ed to r plac EN 1 31 -3-3:2 0 , EN 1 3 6-4-1:2 0 an EN 1 3 6-4-7:2 0

an inclu es biomas b ier s (orme EN1 31 -4-7:2 0 ) T is r vision was r eq ir d as a r sult of the

EP D r cas (2 1 / 1 EU) T e set of stan ards develo ed u de man ate M/ 43 wil be r vised to

be ome consis ent with the overar ching s an ar d u de man ate M/480

Othe g ene ation sys ems ar cover ed in othe sub mod les of p r t M3-8 ( se Ta le 1)

All E B s andards folow spe ific r ules to ensur o e al consis ency, u ambig uity an transp r ency

All EP s an ards pr ovide a c rtain flex ibi ty with r g ard to the methods, the r eq ir ed input data an

r efe enc sto othe E B s an ards, b the introd ction of a normative template in A nnex A an A nnex B

with infor mative default choic s

F r the cor e t use of this s an ard, a nor mative template is g iven in A nnex A to spe ify these choic s

Infor mative default choic s ar pr ovided in A nnex B

The main targ et group of this s an ard ar al the user s of the set of EP s an ards (e.g ar chite t ,

eng ine rs, r g ulators)

Use b or for r eg ulator s: In case the s an ar d is used in the contex t of national or r g ional leg al

r eq ir ement , man ator y choic s ma be g iven at national or r gional level for such spe ific

a plcations, in p rticular for the a plcation within the contex t of EU Dir ctives transp sed into

national leg al r q ir ment T ese choic s (eithe the infor mative default choic s from A nnex B or

choic s ada ted to national/r eg ional ne ds), but in any case folowing the templateof this A nnex A ) can

be made avaia le as National A nnex or as sep rate (e.g legal) document

NOT S in this case:

— the reg ulator s wil specify t he choices;

— the in ivid al user wil ap ly the stan ard t o as es the energ y performance of a building, an

there y use the choices made by the reg ulator s

To ics ad r s ed in this s an ard can be subje t to publc r eg ulation P blc r g ulation on the same

to ics can, for c rtain a plcations, over ride the default values in A nnex B of this s an ard P blc

r gulation on the same to ics can even, for c rtain a plcations over ide the use of this s an ard Leg al

r q ir ement an choic s ar in g ene al not publshed in s andards but in leg al document In orde to

avoid double publcations an dificult updating of double document , the National A nnex ma r fe to

the leg al tex ts whe e national choic s have be n made b publc authorities

It is ex pe ted, if the default values an choic s in A nnex B ar not folowed d e to national r gulations,

p lcy or tr aditions, that:

— national or r g ional authorities pr p r data she t containing the choic s and national or r gional

values, ac ording to the model in A nnex A In this case the National A nnex (e.g NA ) r efer s to this

tex t;

— or, b default, the national s an ards b dy wil conside the p s ibi ty to ad or inclu e a National

A nnex in ag re ment with the template of A nnex A , in ac ordanc to the leg l document that give

national or r egional values an choic s

Furthe targ et groups ar e use s of the volu tary common Euro ean Union c rtification scheme for the

ene g y pe for manc of non-r sidential bui dings (EP D art.1 9) an any othe Pan EU p r ties wanting

to motivate their as umptions by clas ifying the buiding ene gy pe for manc for a dedicated buiding

s ock

Mor information is pro ided in the Te h ical R ep rt ac omp nying this s an ar d (CEN/TR 1 3

6-6-4)

1 Scope

This Euro ean Stan ar d is p rt of a ser ies of s andards on the method for calculation of system ene g

r q ir ement an sys em eficiencies of sp c heating systems an domes ic hot wate systems

This s an ar d (EN 1 3 6-4-1) spe ifies:

for sp c heating g ene ation b combus ion sub-systems (b ie s, biomas ), including control

This stan ard spe ifies methods for the calculation of:

— the mal los esfr om the heating an the domes ic hot wate g ene ation system;

— r cover able ther mal los es for sp c heating fr om the heating an the domes ic hot wate

gener ation system;

— aux ilary ener g y of the heating and the domestic hot wate g ene ation systems

This s andard spe ifiesthe ene g y pe formanc calculation of water b sed heat g ene ation sub-systems

inclu ing control b sed on combus ion of fuels (“ boier s” , o e ating with conventional fos i fuels as

wel as r newa le fuels This s andard does not cover sizing or inspe tion of b ier s

This s an ard is also a plca le to heat g ene ator s for heating or for combined ser vic as domes ic hot

water, ventiation, co lng and heating Gene ators for domes ic hot water only ar taken into ac ount

into p rt M8-8

This Euro ean Stan ard is the g ene al s an ard on g ene ation b combus ion sub-systems (b ier s,

biomas ) an is also inten ed for gene ation for domes ic hot wate prod ction an / r sp c heating

These values ar input data for calculation of the over al ene g y use ac or ding to EN ISO 5 0 0-1 an

EN 1 3 6-1

Ta le 1 shows the r elative p sition of this s andar d within the set of EP s an ards in the contex t of the

mod lar s ructur as set out in EN ISO 5 0 0-1

NOT 1 In C N ISO/TR 5 0 0-2 the same table can b fou d, with, for e ch mod le, the n mb r s of the

relevant E B stan ards an ac ompanying tech ical reports that ar e p blished or in preparation

NOT 2 T e mod les represent E B stan ar ds, althoug h one E B stan ard may cover more than one mod le

an one mod le may b cov ered by more than one E B stan ar d, for instance a simplified an a detailed method

respectiv ely S e also Clause 2 an Ta les A.1 an B.1

Table 1 — Position ofEN 15316–4-1 within the mo ula str uctur e

1 Gener al 1 Gener al 1 Gener al 1 3 6–1 1 3 6–1

He t Gains

7 Stor age an

2 Normative references

The folowing document , in whole or in p rt, ar normatively r fe enc d in this document an ar e

in ispensa le for it a pl cation F r dated r fer enc s, only the edition cited a pl es F r un ated

r fe enc s, the lates edition of the r fe enc d document (inclu ing any amen ment ) a ples

EN 8 , G as-fired stora e wate heate s fr the produc tion o domestic h t wate r

EN ISO 1 7 0, Ene g pe f rma c e o b ildings — Calc ulatio o ene g use fr spac e heating a d c ooling

(ISO 1379 )

EN ISO 5 0 0-1, Ene g pe f rma c e o b ildings — Ove arc hing EPB assessment — Part 1: G ene al

framework a d procedur s (ISO 5200 0-1)

3 Terms and definitions

F r the purp sesof this document, the ter ms an definitions given in ENISO 5 00 -1 and the folowing

a ply

3.1

he t tr ans e c oeficient

factor of pro ortional ty of heat flow g overned b a temper atur dife enc between two envir onment

low temper atur e boier

non-con ensing b ie which can work contin ously with a wate sup ly temper atur of 3 to 40°C,

p s ibly prod cing condensation in c r tain cir ums anc s

3.5

co densing boie

b ie in which, u de normal o er ating con itions an at c rtain o er ating wate tempe atur s, the

wate vap ur in the combus ion pr od ct is p rtly con ensed, in orde to make use of the latent heat of

thiswate vap ur for heating purp ses

Note 1 to entry: Boiler not desig ned to or without the me ns to remove the con ensat e in liq id form, are

caled ‘non-con ensing ’

[SOURCE: EN1 50 -1:2 1 +A 1:2 1 , 3.1.1 2, modified - Note 1to entry has be n ad ed.]

[SOURCE: EN 1 0 4:2 0 , 3.4, modified – Slg ht dife ent drafing an Note 1 to entry have be n

ad ed.]

3.6

mo es of oper ation

various modes in which theheating system can o e ate

EX AMP E S t-point mode, cut-of mode, red ced mode, set-b ck mode, b ost mode

3.7

on/of b ie

b ie without the ca a i ty to vary the fuel burning rate whis maintaining contin ous burne fir ing

Note 1 to entry: T is inclu es b iler with alternat ive burning rates set once only at the time of instal ation,

refer ed t o as r ang e rating

b ie with the ca a i ty to vary contin ously (rom a set minimum to a set max imum) the fuel burning

rate whis maintaining contin ous burne firing

oper atio cycle

time pe iod of the o e ation cycle of a b ie

3.13

standar d co ditio

condition of 15 °C, 1 0 3,2 mb r, if the e ar no othe information

4 Sy mbols and abbreviations

4.1 Symbols

F r the purp ses of this document, the symb ls and in ic s of ENISO 5 0 0-1 and the symb ls an

u it of Ta le 2 a ples

Table 2 — Symbols and units

4.2 A bbr eviations and indices

F r the purp ses of this document, the symb ls an in ic s of EN ISO 5 0 0-1 and the indic s of

Ta le 3a ples

Table 3— Indic es

Hc Heating cir cuit ch chimney prio prior ity

H2O h midity cor cor e ted/cor re tion sat satur ation

Pn at nominal lo d dry dry g ases sim simultaneous

Pint

at inter mediate

lo d

P0 at z ro lo d fg flue gas s s oichiometr ic

Cir cuit of any

consider ed

buiding system

brm b ie ro m p p rtial ar ea S s orag e

5 Desc iption ofthe method

5.1 Output of the method

F r output q antities se Ta le 4

Table 4 — Output q antities

Desc iption Symb l Unit

Recover able gener ation heat los es

for heating sys em (in the calculation

inte val)

Qg

n;

s;r bl kWh se 6.5 0…∞ M 3 1 YES

g ene ation heat los es (in the

calculation inter val)

Qg

n;

s; kWh se 6.4 0…∞ M 3 1 YES

Ex penditur factor of the gene ator

for the whole se vic

Ex penditur factor of the gene ator

for ventiation

heat gener ation aux ilar y ener g y for

the heating system (in the calculation

5.2 Gener al des r iption ofthe method

The calculation method of the gene ation sub-sys em takes into ac ount heat los es an / r r cover y

d e to the folowing physical factor s:

— heat los es to the chimney (or flue gas ex haus ) an thr ough the envelo e of the s orag e tan an

the g ene ator( s) d r ing total time of g ene ator o er ation (run ing and s an -by);

— aux ilary ene gy

The calculation is indepen ent from the time s eps

Ther e ar e a b sic calculation for

— b ier s at al (Clause 6.);

— dir ct heated domes ic hot wate heater s (6.1 ) an

— domes ic hot wate a planc tes ed with 24 h tap ing cycles(6.1 )

Ther e ar thr ee p s ibi ties input for the g ene ation eficiency calculation:

— default values(5.5);

— prod ct values (5.6);

— measur ed values (5.7)

Default values ar g iven in A nnex B

Prod ct values b the man factur s shal be tes ed ac ording to the a pr opriated EN s an ard ( se

biblog ra hy)

Measur d values ar for ex is ing b ier s, con ensing b ie s an on-site inspe tion

5.3 Input data

Input q antities from othe p rt of the heating sys em s an ards, se Ta le 5

Table 5 — Input quantities

Val dity

inter val

Des ination mo ule Var ying

n mb r of dweling s within a building Nflat - 0…∞ M3 1 YES

n mb r of pe k tap ing s per day nSp - 0…∞ M3 1 YES

R ated out put for co ling system Pn,C k W 0…∞ M 4– YES

R ated out put for ventilation system Pn,V kW 0…∞ M 5 3 YES

R ated out put for D W syst em Pn,W

kW

He t in ut to the he ting distribut ion

system (in the respectiv e t ime) QH,dis;n k Wh 0…∞ M3 6, Yes

He t in ut t o the co ling distribut ion

system (in the respectiv e t ime) QC,dis;n k Wh 0…∞ M4–6 YES

He t in ut to the v ent ilation

distr ibution syst em (in the respectiv e

daily energ y ne d for domestic hot

He t in ut to the domestic hot water

distr ibution syst em (in the r espectiv e

Usag e per iod for he ting (in the

t

;us

h or d 0…8 60 M3 4, M8 4 YES

Desc iption Symb l Unit

Val dity

inte val

Des ination mo ule Var ying

calculation int erval),

Usag e period for co ling (in the

calculation int erval) tC;us h or d 0…8 60 M 4–4 YES

Usag e per iod for v entilation (in the

calculation int erval) tV ;us h or d 0…8 60 M5 4 YES

Usag e period for domestic hot wat er

(in the calculation inter val) tW ;us h or d 0…8 60 M8 4 YES

R un ing time for he ting (in the

calculation int erval) t

s/h or

h/mth 0…360

M 3 4, M 8 4,

EN ISO 1 7 0 YES

ru ning time for co ling system –

s/h or

h/mth 0…360 M3 4, M 8 4 YES

ru ning t ime for v entilation system –

g enerat or avera e wat er t emperature

(or return t emperature to the

g enerat or for con ensing b iler ) as a

fu ction of the specific oper ating

con itions ϑHc;mn °C 0 1 0 M3 4, M 8 4 YES

averag e return temperature t o the

g enerat or for con ensing b iler as a

fu ction of the specific oper ating

con itions ϑHc;R T °C 0 1 0 M3 4, M 8 4 YES

g enerat or avera e wat er t emperature

as a fu ction of the specific oper ating

con itions for co ling systems - when

con ected ϑCc;mn °C 0 1 0 M3 4, M 8 4 YES

g enerat or avera e wat er t emperature

as a fu ction of the specific oper ating

con itions for ventilation systems -

when con ected ϑV c;mn °C 0 1 0 M3 4, M 8 4 YES

g enerat or avera e wat er t emperature

as a fu ction of the specific oper ating

con itions for DHW systems - when

con ected ϑW c;mn °C 0 1 0 M3 4, M 8 4 YES

averag e return temperature t o the

g enerat or for con ensing b iler as a

fu ction of the specific oper ating

con itions for co ling systems - when

con ected ϑCc;R T °C 0 1 0 M3 4, M 8 4 YES

averag e return temperature t o the

ϑV c;R T °C 0 1 0 M3 4, M 8 4 YES

Desc iption Symb l Unit

Val dity

inter val

Des ination mo ule Var ying

g ener at or for con ensing b iler as a

fu ction of the specific operating

con itions for ventilation systems -

when con ected

averag e r eturn temperatur e t o the

g ener at or for con ensing b iler as a

fu ction of the specific oper ating

con itions for DHW systems - when

con ected ϑW c;R T °C 0 1 0 M3 4, M 8 4 YES

averag e r eturn temperatur e t o the

g ener at or for con ensing b iler s

cold water t emperature ϑ k °C 0 9 M3 4 YES

Delivered energ y in ut of the

g ener at ion sub-system (me sured

fuel in ut)(in the calculation interval)

Eg en;delin kg , m

3

g ener at or outp t at ful lo d P k W 0…∞ M 3 2 YES

g ener at or outp t at int ermediate lo d Pint k W 0…∞ M 3 3 YES

temperature diference b t ween

b iler return wat er temperature an

flue g as t emperature at part lo d

out of ad itional t ests

ful lo d eficiency with me n wat er

temperature ϑg en;t est; n;ad

ηPn;add - 0 1 me sured YES

me n wat er temper ature at ful lo d ϑ ge ;tes t;Pn;ad °C

− 0

+ 0

me sured YES

part lo d eficiency w ith me n water

temperature ϑg en;t est; in ad

ηPi nt;ad - 0 1 me sured YES

me n wat er temper ature at part lo d ϑ ge ;test;Pint;ad °C

− 0

+ 1

me sured YES

5.4 Boundar ies betw een distr ibution and g ener ation sub-system

Bou dar ies between g ene ation sub-system an distr ibution sub-sys em should be defined ( se

desc iption in CEN/TR 15 1 -6-4)

5.5 Default values

5.5.1 Default values for g ener ator eficiency at ful load and intermediate load as a functio of

the gener ator power o tput

The g ener ator eficiency at ful lo d as a fu ction of the g ene ator p we output is calculated with

F r con ensing b ie the gene ator eficiency at ful lo d shal be ela or ated between 6 °C an 3 °C

r tur n tempe atur using F r mula (2) for 6 °Can F rmula (3) for 3 °C:

P is the nominal powe output, in kW lmited to a max imum value of 40 kW If the

nominal p wer output of the g ene ator is highe than 40 kW, then the value of

is the coeficient given in Ta les A 1 A 2 an Ta les B.1 B.2

5.5.2 Default value for the stand-by he t los es f

5.6 Pr oduct values

Pr od ct values b the man factur s shal be tes ed ac ording to the a pr opriated EN s an ard ( se

Biblog r aphy)

5.7 Me sur ed values

5.7.1 Boie eficiencies fr om me sur ed values

The eficiency of the b ie at ful lo d η

5.7.2 Me sur ed total ther mal los es, power input an c alc ulated g ains

Ther mal los esthr ough the chimney with the burne on P

The calculation proc d r e for con ensation at p rt lo d is calculated in 5.7.3

The averag e p wer input to the gene ator P

5.7.3 A dditio al default data and calculatio for co densing b ier s

The spe ifications of the g as volumes b sed on ISO 8 7

Flue gas tempe atur e (at b i e outlet con e tion to flue g as), if not measur ed, is calculated with

between b ie r eturn wate tempe atur an flue gas tempe atur e at p rt lo d normaly is1 K

A ctual amou t of dr y flue g asV

fg;dry

in m3

/m3

or m3

kg is calculated with F rmula (1 ):

−fg;dr y fg ;st; r y

O2;fg;dr y2

m3

or m3

kg is calculated with F r mula (1 ):

is as umed eithe eq al to ins alation r oom tempe atur for type B

a planc sor to ex te nal air tempe atur for type C a planc s

Satur ation h midity of air m

H2O;air ;sat

h midity pe m

3

of dry air or dry flue g as Data can be fou d in Ta le A 1 an Ta le B.1 Linear or

p lynomial inte p lation shal be used for inter mediate temper atur s

Total h midity of combus ion air m

whe e

x

ir

is thecombus ion air r lative humidity Default valueis given in Ta le A 14 and Ta le B.14

Total h midity of fluegasm

is the flue gas r lative h midity Default valueis g iven Ta le A 14 an Ta leB.14

The amount of condensing wate m

The spe ific latent heat of con ensation h

(2 )

NOT Use Formula (2 )or (2 )ac ording to the choice of u it s for energ y an time

The spe ific con ensation heat Q

gasanalysis r esult (F r mula (2 ) :

If ther e is no measur ement pos ible the p rt of s an -b heat los es atr ibuted to heat los es throug h

the g ener ator envelo e is given b f

f

P

(2 )

The averag e wate temper atur in the b ie at actual con itions shal be a out 7 °C but hig he than

is the heat los es through the chimney when the burne is switched of at tes con itions

If no data ar avaia le, default values ar e given in Ta le A 11 and Ta le B.1

5.8 Boi er r ated output

The rated output P of b ier s to be ins aled in newly e e ted buiding s is calculated as folows:

Firs ly, the rated output of the b ie an the r eq ir d max imum output for al con e ted lo ds

(consume s) ar e deter mined Depen ing on the ex tent to which r eq ir ment ne d to be met

simultaneously, the b i e rated output P shal be deter mined eithe from the larges in ivid al output

or b adding tog ethe the simultaneous r eq ir ment ac ording to F r mula (28) The value of P for

spac heating g ene ation is o tained asfolows:

The heat b lanc of the g ene ation sub-system inclu es the contr ol of heating g ene ation

The whole clause descr ibes the calculation for the heating system If the b ie se ves for othe s as

co lng , ventiation or domes ic hot water , the calculation wil be the same

To g et an information to each se vic the ex pen itur factor is calculated

for heating using F rmula (3 )

E

(3 )

for othe using F rmula ( 33)

E

(33)

In ex X Y s an s for co lng C, ventiation V an / r DHW W

6.3 Equation fuel heat input

The b sic ene g y b lanc of the g ene ation sub-system is calculated with F r mula (34)

g n;in g n;out g n;aux ;r vd g en;ls g n;re n

(34)

F r b ie Q gen:r n isnor maly z r o

6.4 Gener ator aux il ar y energ y

The total gene ation aux il ary ene gy is eq al to the sum of b ie sub-system aux ilar y ene gy d r ing

heating o e ation an othe se vic s It is calculated with F r mula (3 ):

6.5.1 Gener ator los

The g ener ator los esar ad ed to each other , they ar e calculated with F r mula (3 )

=s orag e los es ( se F r mula 7 )

6.5.2 Gener ator ther mal los at spec ific load r atio βH;g en and powe o tput P

H;g en;ls;Px H;g n;ls;P ;cor r H;g en;ls;Pint;cor r H;g en;ls;Pint;cor r

during the conside ed time of o e ation of the b i e for heating is

calculated with F r mula ( 39):

H;g en;ls H;g n;ls;Px H;use

6.5.3 Gener ator ther mal los calc ulation at ful load

If the e is a tr ac b n ins ead of cir ulation for DHW, the eficiency of the b ie has to be cor e ted

ins ead of F r mula (40):

This eficiency has to be adjus ed to the actual gene ator average wate temper atur of

the individ al ins alation

The tempe atur e cor e ted eficiency at ful lo d for non-con ensing b ie s η

The g ene ator eficiency at ful lo d of con ensing b ier s is tes ed at a b ie averag e r etur n

temper atur of 60 °Cand 30 °C

In that case the tempe atur cor re ted eficiency of condensing b ier s at ful lo d η

In orde to simplfy the calculations, the eficiencies and heat los es deter mined at tes conditions ar

adjus ed to the actual g ene ator averag e wate tempe atur

The corr ected g ene ator ther mal los at ful lo d P

6.5.4 Gener ator ther mal los calc ulation at inter mediate load

The tempe atur corr ected eficiency at inter mediate lo d η

Hs/Hi g n;Pin cor r

H;g n;ls;Pint;cor r int

g en;Pint;cor r

6.5.5 Gener ator ther mal los calculation at 0 % load

If ther e is an trac b n ins ead of cir ulation for DHW the eficiency of the b i e has to be cor e ted

cor esp n ing to F rmula (40) Inse t

ge nlsP Hs Hi

g nPnP

ma be calculated using eficiency data fr om ad itional tes s pe for med at a

lower average wate tempe atur e, using F rmula ( 47):

ma be calculated using eficiency data fr om ad itional tes s per for med at a

highe a e age wate tempe atur e, using F rmula ( 48):

In ex XY stan s for co lng C, ventiation V an / r DHW W

6.6.2 Gener ator ther mal los es thr oug h the jac ket (gener ator env elope)

The r ecovera le ther mal los es throug h the jacket (g ene ator envelo e) Q

6.6.3 Recover able ther mal los es o t of aux ilar y ener g y

Default value of the p rt of the auxilary ene gy transmited to the dis r ibution sub-sys em f

The r cover d aux ilary ener g y transmited to the heating medium Q

6.7 Recovered auxi iary ener g y

The total r cover d aux ilar y ene g y Q

If no de lar d or measur d data ar avaia le, default values ar e g iven in 5.5

If 0 ≤ β

H,g en

≤ β

intthen P

H;aux ;Px aux ;P aux ;Pint ; int

Pint1

6.9 Gener ator ther mal output

The heat output from the b ie eq als the sum of heat input to the con e ted dis ribution systems of

the dife ent se vic s:

6.10 He ting time and load factor

If the e ar e mor user s – as domes ic hot water , ventiation or co l ng - than for heating the time for

heating wi de r ase If the e ar e othe sys ems con e ted an ru with dife ent pr iorities the heating

time of each se vic d ring the heating per iod can be calculated with F rmulae (5 ), (6 ), (6 )an (62)

6.11 Direct heated DHW heater s

6.1 1 Instantaneo s elec tr ical wate he ter

The ther mal los es of instantaneous ele trical wate heate s wi have neglg ible los es Ther e is no

aux ilary ene g y ne ded

f se Ta le A 1 or B.1 4 Ins antaneous g as wate heater

Instantaneousg aswate heate shal be calculated as low temper atur combination b ier s

6.1 2 Gas-fir ed domestic stor ag e wate hea ter s

The the mal los of a g as-fir d domes ic s orag e wate heate is calculated in ac or danc with

EN 8 (with an a e ag e tempe atur dife enc between the stor ag e wate an the ins alation sp c of

45K; se A nnex B, B.7) The ther mal los Q

W ;S;lsfrom the s orage wate heate can be deter mined on

the b sis of the s an -b ther mal los thus measur d Sinc heat gener ation takes plac within the

s or ag e heater ,the r lated los es ar to be calculated ac or ding F rmula (74)

6.11.3 Bo ndar y c onditions for the default v alues

If no data for s orage ca acitiesar e avaia le, then the s orage volume can be a prox imated fr om:

of the s orage tan is not k own (i.e has not be n measur d in

ac ordanc with EN 8 ), it can be a prox imated using A nnex A 7 or B.7

F r a s orage wate heate that is dir ct-fir d using gas, the los that has to be taken into ac ou t is

calculated as for a b ie , thes an -b los es ha ing be n alr ady taken into ac ou t in A 7or B.7

A gene ator eficiency η

0 %

of 84 % ac ording to EN 8 shal be as umed

Th s the ther mal los Q

F r simplfication, the auxilary ene g y r q ir ement Q

W,gen,aux

can be set at z ro

6.12 Method for domestic hot w ater appl ance, tested w ith 24 h tapping cycles

Input data fr om the a planc tes with one or mor e 24 h ta ping cycles In the las column, the

cor resp n ing symb ls in EN1 2 3-2 ar e ls ed In case this method should alow the use of othe ,

comp ra le tes r esult fr om (elde ) national s andar ds, the corr esp n ing u its ne d to be ls ed in a

national an ex with the same s ructur e as this Ta le 6

Table 6 — Input da ta fr om DHW applance test standar d

is the total delver ed daiy ene g y for tap ing

cycle i (value from in EN1 2 3 2, Ta les 2, 3, 4,

is the daiy fuel consumption for ta ping cycle i,

cor re ted for summe an winte (in EN 1 2 3 2

calculated using NCV )

kWh

Q

gs;p(i)

W

W;gn;test ,i

is thedai y total aux ilar y ene g y consumption for

ta ping cycle i ( in EN 1 2 3– inclu ing s an b

use)

kWh

E

eleco(i)

Tes i is n mbe ed ac ording to inc easing del ver ed daiy ene gy

The calculation r ules for the daiy heat g ene ation aux ilary ene g y for the DHW system, E

W;gn;n, ar

(8 )