Heating boilers - Part 3: Gas-fired central heating boilers - Assembly comprising a boiler body and a forced draught burner

TC - Replace Tables 5 and 6

Heizkessel - Teil 3: Zentralheizkessel für gasförmige Brennstoffe - Zusammenbau aus Kessel und Gebläsebrenner

Chaudières de chauffage - Partie 3: Chaudières de chauffage central utilisant les combustibles gazeux - Assemblage d'un corps de chaudière et d'un brûleur à air soufflé

Kotli za gretje – 3. del: Plinski kotli za gretje – Sestav kotla in gorilnika s prisilnim vlekom – Popravek AC

General Information

Status
Published
Publication Date
06-Jun-2006
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
07-Jun-2006
Completion Date
07-Jun-2006

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Corrigendum
EN 303-3:1999/AC:2006
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kotli za gretje – 3. del: Plinski kotli za gretje – Sestav kotla in gorilnika s prisilnim vlekom – Popravek ACHeizkessel - Teil 3: Zentralheizkessel für gasförmige Brennstoffe - Zusammenbau aus Kessel und GebläsebrennerChaudieres de chauffage - Partie 3: Chaudieres de chauffage central utilisant les combustibles gazeux - Assemblage d'un corps de chaudiere et d'un bruleur a air souffléHeating boilers - Part 3: Gas-fired central heating boilers - Assembly comprising a boiler body and a forced draught burner97.100.20Plinski grelnikiGas heaters91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:EN 303-3:1998/AC:2006SIST EN 303-3:1999/AC:2006en,fr,de01-september-2006SIST EN 303-3:1999/AC:2006SLOVENSKI

STANDARD
SIST EN 303-3:1999/AC:2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 303-3:1998/ACJune 2006Juin 2006Juni 2006ICS 91.140.10English versionVersion FrançaiseDeutsche FassungHeating boilers - Part 3: Gas-fired central heating boilers - Assemblycomprising a boiler body and a forced draught burnerChaudières de chauffage - Partie 3:Chaudières de chauffage central utilisantles combustibles gazeux - Assemblage d'uncorps de chaudière et d'un brûleur à airsouffléHeizkessel - Teil 3: Zentralheizkessel fürgasförmige Brennstoffe - Zusammenbauaus Kessel und GebläsebrennerThis corrigendum becomes effective on 7 June 2006 for incorporation in the three official languageversions of the EN.Ce corrigendum prendra effet le 7 juin 2006 pour incorporation dans les trois versions linguistiquesofficielles de la EN.Die Berichtigung tritt am 7.Juni 2006 zur Einarbeitung in die drei offiziellen Sprachfassungen der ENin Kraft.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members.Tous droits d'exploitation sous quelque forme et de quelque manière que ce soit réservés dans le monde entier auxmembres nationaux du CEN.Alle Rechte der Verwertung, gleich in welcher Form und in welchem Verfahren, sind weltweit den nationalen Mitgliedernvon CEN vorbehalten.Ref. No.:EN 303-3:1998/AC:2006 D/E/FSIST EN 303-3:1999/AC:2006

EN 303-3:1998/AC:2006 (E/F/D) 2 English version Replace Table 6 with the following: Table 6 – Calculation of the useful part load efficiency Conditions of operation Heat input Cycle time (s)

Meas. Useful efficiency (%) 1 30 % reduced rate QQ2n=⋅03, t2600= η2 ηu = η2 2 Full rate n1QQ= 1) t Q -

QQ - Q11313180600=
η1 u100ηη=×111333113310008 Qt + , Qt - PtQt + Qts
Controlled off Q3 = permanent ignition burner 13600tt−= Ps
3 Reduced rate n213,0QQ⋅> t21 =Q - QQ 600 - Q 180321321
η21 10080100332121333212121u×=tQ + tQtP - tQ , + tQ sηη
Controlled off Q3 = permanent ignition burner 213600tt−= Ps
4 Full rate Q1 = Qn 1) t1 =180600122122 Q -
QQ - Q
η1 uηηη=×111222222112222100100100 Qt + () QtQt + Qt
Reduced rate QQ22n<⋅03, tt221600=− η22
5 Reduced rate 1 QQ21n>⋅03, t21=180 Q - 600 QQ - Q21222122
η21 100 +
100 +
10022222121222222212121×=tQtQtQtQu
Reduced rate 2 QQ22n<⋅03, tt2221600=− η22
6 Full rate Reduced rate Q1 = Qn 1) Q2 t1 = measured value (see annex Q)

t2 =Q - QQ)t - (600 - Q)t - (180323111 η1 η2 ηηηu100100=×11122233311223308100Qt +Qt +, Qt -PtQt + Qt + Qts

Controlled off Q3 = permanent ignition burner )(600213ttt+−= Ps

1) Qn is replaced by the arithmetic mean Qa of the maximum and minimum heat input for range-rated boilers.

SIST EN 303-3:1999/AC:2006
EN 303-3:1998/AC:2006 (E/F/D) 3 Replace Table 5 with the following:

Table 5 – Symbols and quantities needed to calculate the efficiency at part load Operational phases of the main burner H

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