EN 437:2003/prA1

SLOVENSKI STANDARD
SIST EN 437:2005/oprA1:2007
01-april-2007
Preskusni plini - Preskusni tlaki - Kategorije naprav - Dopolnilo A1
Test gases - Test pressures - Appliance categories - Amendment A1
Prüfgase - Prüfdrücke - Gerätekategorien
Gaz d'essai - Pressions d'essai - Catégories d'appareils
Ta slovenski standard je istoveten z: EN 437:2003/prA1
ICS:
27.060.20 Plinski gorilniki Gas fuel burners
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
SIST EN 437:2005/oprA1:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
EN 437:2003
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
February 2007
ICS 27.060.20; 91.140.40
English Version
Test gases - Test pressures - Appliance categories
Gaz d'essai - Pressions d'essai - Catégories d'appareils Prüfgase - Prüfdrücke - Gerätekategorien
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 238.
This draft amendment A1, if approved, will modify the European Standard EN 437:2003. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN in three official versions (English, French, German). A version in any other language made
by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same
status as the official 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 437:2003/prA1:2007: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Gases .4
4.1 Classification.4
4.2 Test gases .4
5 Test pressures .6
6 Classification of appliances .7
6.1.2.2 Appliances designed for use on second family gases only .7
7 Choice of test gases and test pressures.7
8 Marking .7
Annex A (normative)  Conditions for preparation of the test gases.8
Annex B (informative)  National situations.9
B.1 General.9
B.2 Categories listed in the body of the standard marketed in the different countries.9
B.3 Appliance supply pressures corresponding to the categories given in B.2 .12
B.4 Special categories marketed nationally or locally .13
B.5 Test gases and test pressures corresponding to the special categories given in B.4 .18
B.6 Special conditions .20
Annex C (informative) Guidelines for extension to other categories .26
Annex D (informative) National situation of countries whose national bodies are CEN affiliate members27
D.1 General.27
D.2 Categories listed in the body of the standard and marketed in the different countries .27
D.3 Supply pressures of the appliances .28

Foreword
This document (EN 437:2003/prA1:2007) has been prepared by Technical Committee CEN/TC 238 “Test gases,
test pressures and categories of appliances”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a mandate given to CEN by the European Commission and the European
Free Trade Association, and supports essential requirements of EU Directive(s).
In Foreword of EN 437
Replace the four last paragraphs by the following ones:
This standard can be considered as an important stage in the harmonization of test gases, test pressures and
appliance categories and the quality of information on gas usage in Europe.
The standard also applies to Albania, Bulgaria, Croatia, Republic of Macedonia and Turkey, countries whose
national body is affiliate member of CEN (see annex D).

1 Scope
Unchanged
2 Normative references
Replace the introductory paragraph by the following (revised text in the CEN/CENELEC Internal Regulations, Part
3):
The following referenced documents are indispensable for the application of this European Standard. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
Replace ISO 6976:1995 by EN ISO 6976:2005
Add:
EN ISO 13443:2005, Natural gas – Standard reference conditions.
3 Terms and definitions
In 3.1 and in its NOTE, replace:
"combustible gases" by "gaseous fuels"
4 Gases
4.1 Classification
Unchanged
4.2 Test gases
th
Replace 4 paragraph by:
The values in Tables 2 and 4, measured and expressed at 15 °C, are derived from EN ISO 6976:2005.
Replace Table 2 by the following one:
a
Table 2 – Characteristics of the test gases for the first and second families,
gas dry at 15 °C and 1 013,25 mbar
Gas family Test gases Designation Composition by W H W H d
i i s s
and Group volume
e 3 3 3 3
%
MJ/m MJ/m MJ/m MJ/m
b
Gases of the first family
Group a Reference gas G 110
CH = 26
Incomplete combustion, flame 21,76 13,95 24,75 15,87 0,411
H = 50
lift and sooting limit gas
N = 24
Light back limit gas G 112
CH = 17
19,48 11,81 22,36 13,56 0,367
H = 59
N = 24
b
Gases of the second family
Group H Reference gas G 20 45,67 34,02 50,72 37,78 0,555
CH = 100
Incomplete combustion and G 21 49,60 41,01 54,76 45,28 0,684
CH = 87
sooting limit gas
C H = 13
3 8
Light back limit gas G 222 42,87 28,53 47,87 31,86 0,443
CH = 77
H = 23
Flame lift limit gas G 23 41,11 31,46 45,66 34,95 0,586
CH = 92,5
N = 7,5
f
G 24 47,01 35,70 52,09 39,55 0,577
Over heating limit gas
CH = 68
C H = 12
3 8
H = 20
Group L Reference gas G 25 37,38 29,25 41,52 32,49 0,612
CH = 86
light back limit gas
N = 14
Incomplete combustion and G 26
CH = 80
sooting limit gas
C H = 7 40,52 33,36 44,83 36,91 0,678
3 8
N = 13
Flame lift limit gas G 27 35,17 27,89 39,06 30,98 0,629
CH = 82
N = 18
Group E Reference gas G 20 45,67 34,02 50,72 37,78 0,555
CH = 100
G 21 49,60 41,01 54,76 45,28 0,684
CH = 87
Incomplete combustion and C H = 13
3 8
sooting limit gas
Light back limit gas G 222 42,87 28,53 47,87 31,86 0,443
CH = 77
H = 23
Flame lift limit gas G 231 36,82 28,91 40,90 32,11 0,617
CH = 85
N = 15
f G 24 47,01 35,70 52,09 39,55 0,577
Over heating limit gas CH = 68
C H = 12
3 8
H = 20
a
For gases used nationally or locally, see B.5.
b
For other groups, see B.5.
c
See also Table 4.
d
The appliance standards may only specify one sooting limit gas.
e
See also Annex A
f
Limit gas used only for certain types of appliance, specified in the individual appliance standards
.
Add:
NOTE Table 3 of EN 437:2003 was integrated into Table 2. This document does not contain a Table 3.
Delete Table 3.
Replace Table 4 by the following one:
Table 4 - Characteristics of the test gases a for the third family,
gas dry at 15 °C and 1 013,25 mbar
Gas family and Test gases Designation Composition by W H W H d
i i s s
Group volume
e 3 3 MJ/kg 3 3 MJ/kg
%
MJ/m MJ/m MJ/m
MJ/m
b
Gases of the third family
Third family Reference gas n-C H = 50 80,58 116,09 45,65 87,33 125,81 49,47 2,075
4 10
and
Groups B/ P Incomplete combustion G 30 i- C H = 50
4 10
and sooting limit gas
Flame lift limit gas G 31 C H = 100 70,69 88,00 46,34 76,84 95,65 50,37 1,550
3 8
and B Light back limit gas G 32 C3H6 = 100 68,14 82,78 45,77 72,86 88,52 48,94 1,476
Group P Reference gas,  G 31 C H = 100 70,69 88,00 46,34 76,84 95,65 50,37 1,550
3 8
Incomplete combustion,
d
flame lift and sooting limit
gas
Light back and sooting limit G 32 C H = 100 68,14 82,78 45,77 72,86 88,52 48,94 1,476
3 6
d
gas
a
For gases used nationally or locally, see B.5.
b
For other groups, see B.5.
c
See also Table 4.
d
The appliance standards may only specify one sooting limit gas.
e
See also Annex A.
Relace the text of the NOTE by the following one:
NOTE The characteristics for second family gases at reference conditions other than 15 °C for metering and 15 °C for
combustion can be calculated using the coefficients given in EN ISO 13443, Annex A (Normative). As an example the
characteristics of the reference gases of the second family at 0 °C for metering and for combustion and 1 013,25 mbar (dry gas)
are given in Table 5.
5 Test pressures
rd
In Table 6, after the lines 3 family, 3B/P, add a line:
rd
3 family, 3P G 31, G 32 30 25 35

In table 7, replace the first column by the following:
Appliance categories
having as index
nd
2 family :
2E+
rd
3 family : 3+
(28-30''''37 couple)
rd
3 family : 3+
(50''''67 couple)
rd
3 family : 3+
(112''''148 couple)
6 Classification of appliances
6.1.2.2 Appliances designed for use on second family gases only
Replace definition of I by the following:
2R
Category I2R: appliances having a pressure governor using all the following gases of the second family and/or
gases linked to the second family (gas groups H, E, L and LL) which can be adjusted manually in order to utilize
the various gases of a group of the second family under the local condition of distribution (see Table B.6).
7 Choice of test gases and test pressures
Unchanged
8 Marking
Unchanged
Annex A
(normative)
Conditions for preparation of the test gases
Delete the reference to table 3 twice in the last paragraph.
Annex B
(informative)
National situations
B.1 General
Replace Table by the following one:
AT Austria IS Iceland
BE Belgium IT Italy
CH Switzerland LT Lithuania
CY Cyprus LU Luxembourg
CZ Czech Republic LV Latvia
DE Germany MT Malta
DK Denmark NL Netherlands
EE Estonia NO Norway
ES Spain PL Poland
FI Finland PT Portugal
FR France RO Romania
GB United Kingdom SE Sweden
GR Greece SI Slovenia
HU Hungary SK Slovakia
IE Ireland
B.2 Categories listed in the body of the standard marketed in the different countries
Replace Tables B.1 and B.2 by the following ones:
Table B.1 – Category I (single categories) marketed

a a a a
Country code I I I I I I I
2H 2L 2E 2E+ 2N I 3B/P 3+ I I I
2R 3P 3B 3R
AT x   x x
d
BE  x x x x x x
CH x   x x x
CY    x x x
CZ x   x x x
a c c c
DE  x x x
x x x
DK x   x
EE x   x x  x
a
ES x  x x x x x x
FI x   x
b b a c a
FR x x x x x
x x x x x
d
GB x   x x x x x
x
a
GR x  x x x x x x
x
c
HU   x x x
x
IE x    x x x
IS (?)
IT x   x x x x x
LT x   ? ?
LU (?)  x
LV x
MT
b
NL x   x x
x
NO x   x x  x
PL  x  x x
a
PT x  x x x x x x
x
c
RO x x  x x
x
SE x   x
a
SI x  x x
...