GB 25034-2010 English PDF (GB25034-2010)

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GB 25034-2010: Gas-fired heating and hot water combi-boilers
GB 25034-2010
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.140.99
P 46
Gas-fired heating and hot water combi-boilers
ISSUED ON. SEPTEMBER 02, 2010
IMPLEMENTED ON. JULY 01, 2011
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 4
1 Scope ... 6
2 Normative references ... 6
3 Terms and definitions ... 8
4 Classifications and their parameters ... 11
5 Material, construction and safety requirements ... 13
6 Performance requirements ... 23
7 Test methods ... 39
8 Inspection rules ... 92
9 Markings, warnings and instructions ... 94
10 Packaging, transportation and storage ... 100
Annex A (informative) Comparison between the clause number of this
Standard and the clause number of EN 483.1999 and EN 625.1996 ... 101
Annex B (informative) Technical differences between this Standard and EN
483.1999 and EN 625.1996 and their causes ... 102
Annex C (informative) Classification according to air supply and combustion
products evacuation installation method ... 103
Annex D (informative) Composition of gas automatic shut-off valve in gas
system and requirements for sealing force ... 106
Annex E (Informative) NOx pollution ... 108
Annex F (normative) Electrical safety of appliances using AC power supply113
Annex G (normative) Electromagnetic compatibility safety ... 124
Annex H (informative) Test method for the heat losses from the test rig of the
indirect method and the contributions of the circulating pump of the test rig 127
Annex I (informative) Test method for the ignition time at full load ... 128
Bibliography ... 129
Foreword
5.3.8, 5.4.3, 5.5.1, 5.5.2, 6.2.1, 6.3.4, 6.4.4, 6.5.3.2, 6.5.5.1 a), b), c), 6.5.5.2
a), b), c), d), e), 6.5.7.3 a), b), 6.6.2, 6.8.2, 9.1.1 d), 9.1.2, 9.2.1, 9.2.2 and
Annex F of this Standard are mandatory and the rest are recommended.
This Standard modifies EN 483.1999 “Gas-fired central heating boilers - Type
C boilers of nominal heat input not exceeding 70 kW” (English version) and EN
625.1996 “Gas-fired central heating boilers - Specific requirements for the
domestic hot water operation of combination boilers of nominal heat input not
exceeding 70 kw” (English version).
In order to facilitate comparison, a list of the comparison of the clauses of this
Standard and the clauses modified of the European standards is listed in Annex
A.
Due to the legal requirements of China and the special needs of industry, this
Standard was revised when the two European standards were adopted. A list
of technical differences and their causes is given in Annex B for reference.
This Standard deletes the following contents in EN 483.1999.
1) Annex A. Product classification and supply conditions of European
Community countries;
2) Annex B. Particular national conditions;
3) Annex E. Compilation of the test conditions;
4) Annex K. Examples for marking;
5) Annex N. Requirements and test methods for separate air supply and
combustion products evacuation ducts of type C6 boilers;
6) Annex Z. Clauses of this European standard addressing essential
requirements or other provisions of EU Directives;
7) Relevant content that the maximum heating working water pressure of
appliances is 6 kg.
Annexes D, F and G of this standard are normative annexes, Annexes A, B, C,
E, H, and I are informative annexes.
This Standard was proposed by Ministry of Housing and Urban-Rural
Development of the People’s Republic of China.
This Standard shall be under the jurisdiction of Ministry of Housing and Urban-
Gas-fired heating and hot water combi-boilers
1 Scope
This Standard specifies the terms and definitions, classifications and their
parameters, material, construction and safety requirements, performance
requirements, test methods, inspection rules, markings, warnings and
instructions, packaging, transportation and storage of closed gas-fired heating
and hot water combi-boilers (hereinafter referred to as “appliances”).
This Standard applies to heating and hot water combi-appliances of which the
rated heat input is less than or equal to 70 kW, the maximum heating working
water pressure is less than or equal to 0.3 MPa, the water temperature during
work is not greater than 95 °C, using atmospheric burner or fan-assisted burner
or full premix burner. This Standard also applies to single heating appliances.
This Standard does not apply to the following appliances.
- outdoor appliances with natural combustion products evacuation duct;
- condensing type appliances;
- combination type appliances;
- appliances in which two sets of independent combustion systems are used
for heating and hot water in the same enclosure, including appliances of
which heating and hot water systems have common duct.
2 Normative references
The following documents contain the provisions which, through reference in this
Standard, become the provisions of this Standard. For dated references, their
subsequent amendments (excluding corrigendum) or revisions do not apply to
this Standard. However, the parties who enter into agreement based on this
Standard are encouraged to investigate whether the latest versions of these
documents are applicable. For undated reference documents, the latest
versions apply to this Standard.
GB/T 191 Packaging - Pictorial marking for handling of goods (GB/T 191-
2008, ISO 780.1997, MOD)
GB/T 1019-2008 General requirements for the package of household and
similar electrical appliances
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1.
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection (GB/T 2828.1-2003, ISO 2859-1.1999, IDT)
GB/T 2828.2 Sampling procedures for inspection by attributes - Part 2.
Sampling plans indexed by limiting quality (LQ) for isolated lot inspection
(GB/T 2828.2-2008, ISO 2859-2.1985, NEQ)
GB 4208 Degrees of protection provided by enclosure (IP code) (GB 4208-
2008, IEC 60529.2001, IDT)
GB 4706.1-2005 Household and similar electrical appliances - Safety - Part
1. General requirements (IEC 60335-1.2004 (Ed4.1), IDT)
GB/T 5013.1 Rubber insulated cables of rated voltages up to and including
450/750 V - Part 1. General requirements (GB 5013.1-2008, IEC 60245-
1.2003, IDT)
GB 5023.1 Polyvinyl chloride insulated cables of rated voltages up to and
including 450/750 V - Part 1. General requirements (GB 5023.1-2008, IEC
60227-1.2007, IDT)
GB/T 7306.1 Pipe threads with 55 degree thread angle where pressure-tight
joints are made on the threads - Part 1. Parallel internal and taper external
threads (GB/T 7306.1-2000, eqv ISO 7-1.1994)
GB/T 7306.2 Pipe threads with 55 degree threads angle where pressure-
tight joints are made on the threads - Part 2. Taper internal and threads (GB/T
7306.2-2000, eqv ISO 7-1.1994)
GB/T 7307 Pipe threads with 55 degree thread angle where pressure-tight
joints are not made on the threads (GB/T 7307-2001, eqv ISO 228-1.1994)
GB/T 12113-2003 Methods of measurement of touch current and protective
conductor current (IEC 60990-1999, IDT)
GB/T 13611 Classification and essential property of city gas
GB 14536.1 Automatic electrical controls for household and similar use - Part
1. General requirements (GB 14536.1-2008, IEC 60730-1.2003, IDT)
GB 14536.6 Automatic electrical c...