EN 15270:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Pellet burners for small heating boilers - Definitions, requirements, testing, markingSUHVNXãDQMHR]QDþHYDQMHBruleurs a granulés pour petites chaudieres de chauffage - Définitions, exigences, essais, marquagePellet Brenner für kleine Heizkessel - Definitionen, Anforderungen, Prüfung, KennzeichnungTa slovenski standard je istoveten z:EN 15270:2007SIST EN 15270:2008en97.100.30ICS:SLOVENSKI
STANDARDSIST EN 15270:200801-marec-2008

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15270December 2007ICS 97.100.30 English VersionPellet burners for small heating boilers - Definitions,requirements, testing, markingBrûleurs à granulés pour petites chaudières de chauffage -Définitions, exigences, essais, marquagePelletbrenner für kleine Heizkessel - Definitionen,Anforderungen, Prüfung, KennzeichnungThis European Standard was approved by CEN on 3 November 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15270:2007: E

Vocabulary.29 Annex B (informative)
Fireproof non-metallic materials for pellet burners.32 Annex C (normative)
Requirements for electronic burner start up functions and pellet-air ratio controls.34 Annex D (informative)
Example of risk assessment to prevent back burning.36 Annex E (informative)
Example of risk assessment and the allocation of safety level for control functions using electronic devices for pellet burners.38 Annex F (informative)
Long term stability test (optional).40 Annex G (informative)
Measurement methods for some physical parameters.41 Annex H (normative)
Determination of organic gaseous compounds content.44 Annex I (informative)
Conformity evaluation.46 Bibliography.49

3.6 conveyor system, auger, feed screw
mechanical arrangement, normally incorporating a feed screw, used for transporting the pellets from the fuel hopper to the burner head 3.7 fuel hopper fuel store from which fuel is fed to the pellet burner 3.8 storage with external fuel hopper external fuel store from which fuel is fed to the pellet burner and which is separate from the pellet burner. It can be located either inside or outside the room where the pellet burner is located 3.9 storage with integral fuel hopper integral fuel store container from which fuel is fed to the pellet burner and which is integral with the pellet burner 3.10 burner head
part of a pellet burner where the pellets are burned 3.11 back burning situation in which the flames from the burning pellets in the burner head propagate and ignite the pellets in the conveyor system 3.12 temperature limiter safety level B device that causes the safe shutdown and lockout of the fuel supply and/or the combustion air supply respectively if the limiter value exceeds a pre-set limit. According to EN 14597 it is a device of Type “TB”

safety device that allows small droplets of water to be released onto the pellets in the conveyor system if back burning occurs 3.15 drop chute sloping channel, through which the pellets fall from a conveyor system into a burner head or into moving equipment 3.16 cell feeder device that intermittently interrupts the fuel stream thus only allowing a small amount of pellets at a time to be supplied to the burner, thereby preventing the flue gases from reaching the hopper 3.17 fire damper mobile closure within a duct which is designed to prevent the passage of fire 3.18 combustion air supply air required by the pellet burner to ensure the safe and efficient combustion of pellets and supplied into the combustion chamber, which is entirely or partially used to burn the pellets in the burner head 3.19 ash discharge arrangement for removing the ash from the burner head or the combustion chamber which may be automatically controlled 3.20 non volatile lockout shutdown condition such that a restart can be accomplished only by a manual reset and by no other means 3.21 volatile lockout shutdown condition such that a restart can be accomplished by restoration of the electrical supply after its loss or by manual reset 3.22 heat input, in kW, amount of heat as a function of time released by the burner at a given throughput
3.23 maximum heat input, in kW, maximum heat input, at continuous burning, as specified by the manufacturer
3.24 minimum heat input, in kW, minimum heat input, at continuous burning, as specified by the manufacturer
3.25 excess air ratio ratio between the effectively introduced quantity of air and the theoretically required quantity of air

Ash content in the test fuel at dry bases mass fraction in %
Bd Mass of test fuel referred to the test duration kg/h at dry bases Bw Mass of test fuel referred to the test duration kg/h at firing CC Carbon content of the test fuel mass fraction in %
CCO
Carbon monoxide content of the dry flue gases volume fraction in %
CCO2 Carbon dioxide content of the dry flue gases volume fraction in %
COGC
Calculated content of organic gaseous compounds mg/m³ dry flue gas at 10 % O2 Cr
Carbon content of residues referred to quantity of test fuel mass fraction in %
CTHC,m
Measured total hydrocarbon content expressed in mg/m³ methane equivalents in wet flue gas mg/m³ methane CTHC,p
Measured total hydrocarbon content expressed in mg/m³ propane equivalents in wet flue gas mg/m³ propane Gd
Actual specific dry flue gas volume
m³/kg fuel Gw
Actual specific wet flue gas volume m³/kg fuel

Hydrogen content mass fraction in % s mr Total residue in boiler after test kg O2, m Measured oxygen content in dry flue gas % as mean value OGC Organic gaseous compound
Qib Heat input kW R Total residue referred to the mass of test fuel m
...