GB 35848-2024Commercial gas-burning appliances (English PDF)
商用燃气燃烧器具
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Issued by
State Administration for Market Regulation; Standardization Administration of China
Level / Type
National · Mandatory
Issue date
April 29, 2024
Implementation date
August 1, 2024
Scope
GB 35848-2024 is the English-translated version of 商用燃气燃烧器具.
GB 35848-2024 is the Chinese national standard for commercial gas-burning appliances that use city gas conforming to GB/T 13611, take combustion air from indoors and discharge the products of combustion outdoors.
It gives the classification and models and the requirements on materials, general structure, gas system components, special structures and performance, with the matching test methods: gas system sealing, heat load accuracy, combustion condition, flameout protection, ignition, pre-purge, surface temperature rise, electrical performance and rational energy utilisation.
It also fixes the inspection rules, the markings, warnings and instruction manual, and packaging, transport and storage. The appliances covered, each with its own heat load limit, run from steam generators, steaming ovens and fryers to cooking stoves, open burners, water boilers, grills and ovens.
It replaces GB 35848-2018, was issued on 29 April 2024 and has applied since 1 August 2024.
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Document preview — GB 35848-2024
National Standard of the People's Republic of China
- ICS
- 91.140
- Classification
- P45
- Replacing
- GB 35848-2018
Issued by: State Administration for Market Regulation; Standardization Administration of China
Contents
- Foreword3
- 1 Scope6
- 2 Normative references7
- 3 Terms and definitions8
- 4 Classification and models13
- 4.1 Classification13
- 4.2 Model14
- 5 Requirements15
- 5.1 Materials15
- 5.2 General structure16
- 5.3 Gas system components19
- 5.4 Special structures of gas appliances23
- 5.5 Performance30
- 6 Test methods43
- 6.1 Test conditions43
- 6.2 Inspection and verification46
- 6.3 Gas system sealing test46
- 6.4 Heat load accuracy test47
- 6.5 Combustion condition test47
- 6.6 Flameout protection device test52
- 6.7 Ignition performance test53
- 6.8 Pressure stabilizer performance test53
- 6.9 Pre-purge test53
- 6.10 Type B appliance safety device test54
- 6.11 Surface temperature rise test55
- 6.12 Electrical performance test56
- 6.13 Auxiliary energy test57
- 6.14 Rational energy utilization test58
- 6.15 Tests for special requirements69
- 7 Inspection rules77
- 7.1 Exit-factory inspection77
- 7.2 Type test78
- 8 Markings, warnings, instructions manual79
- 8.1 Markings79
- 8.2 Warnings79
- 8.3 Instruction manual80
- 9 Packaging, transportation, storage82
- 9.1 Packaging82
- 9.2 Transportation82
- 9.3 Storage82
- Appendix A (Informative) Correspondence table of clauses in this document that support the basic requirements of GB 16914-202383
- References85
1 Scope
This document specifies the classification and models, requirements, test methods, inspection rules, markings, warnings and instructions for use, packaging, transportation and storage of commercial gas-burning appliances (hereinafter referred to as "appliances").
This document applies to gas appliances that use urban gas as their energy source, conforming to GB/T 13611, with combustion air drawn from indoors and combustion products discharged directly or indirectly outdoors, including:
a) Steam generator appliance which has a rated heat load not exceeding 80 kW, steam pressure not exceeding 80 kPa, a designed normal water volume less than 30 L;
b) Gas steaming oven appliance which has a rated heat load not exceeding 80 kW and steam chamber pressure not exceeding 1200 Pa;
c) Fryer appliance which has a rated heat load not exceeding 50 kW and internal chamber pressure not exceeding 80 kPa;
d) Cooking stove appliance which has a rated heat load not exceeding 50 kW;
e) Large pot stove appliance which has a rated heat load not exceeding 80 kW;
f) Open burner appliance which has a rated heat load not exceeding 50 kW;
g) Atmospheric pressure water boiler appliance which has a rated heat load not exceeding 100 kW;
h) Rice gas cookers which have a cooking capacity of 6 L or more;
i) Dishwashers which have a rated heat load of 50 kW or less;
j) Stir-fry stoves which have a rated heat load of 60 kW or less;
k) Grills which have a rated heat load of 50 kW or less;
l) Hot plate stoves which have a rated heat load of 35 kW or less;
m) Ovens which have a rated heat load of 80 kW or less;
n) Other commercial gas appliances which have a rated heat load of 100 kW or less;
o) Combinations of the above products.
Note 1: The heat loads mentioned above refer to the heat load of a single combustion unit.
Note 2: This document only covers single-phase power supplies with a rated voltage not exceeding 250 V.
Note 3: Unless otherwise specified, all pressures in this document refer to gauge pressure.
2 Normative references
The contents of the following documents, through normative references herein, constitute essential provisions of this document. For dated references, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 1527 Drawn tube of copper and copper alloys
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 3091 Welded steel pipes for low pressure fluid delivery
GB/T 4208 Degrees of protection provide by enclosure (IP code)
GB 4706.1 Household and similar electrical appliances - Safety Part 1: General requirements
GB 4806.3 National food safety standard - Enamel products
GB 4806.9 National food safety standard - Metallic materials and articles for food contact
GB 4806.11 National food safety standard - Food contact rubber materials and products
GB/T 5013.1 Rubber insulated cables of rated voltages up to and including 450/750V - Part 1: General requirements
GB/T 7306 (All Parts) Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads
GB/T 7307 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads
GB/T 8163 Seamless steel pipes for liquid service
GB/T 8464 Cast iron, copper and stainless steel valves with screwed connections
GB 8624 Classification for burning behavior of building materials and products
GB/T 12113 Methods of measurement of touch current and protective conductor current
GB/T 12771 Welded stainless steel pipes for fluid transport
GB/T 13611 Classification and basic characteristics of city gas
GB/T 16411 Universal test methods of gas burning appliances for domestic use
GB/T 17219 Hygienic safety evaluation of distribution equipment, protective materials and treatment materials in drinking water system
GB/T 23658 Elastomeric seals - Material requirement for seals used in pipes and fittings carrying gaseous fuels and hydrocarbon fluid
GB/T 37499 Safety and control devices for gas burners and gas-burning appliances - Particular requirements - Automatic and semi-automatic valves
GB/T 38595 Safety and control devices for gas burners and gas-burning appliances - Particular requirements - Mechanical thermostats
GB/T 38603 Safety and control devices for gas burners and gas-burning appliances - Particular requirements - Electronic controller
GB/T 38693 Safety and control devices for gas burners and gas-burning appliances - Particular requirements - Thermoelectric flame supervision controls
GB/T 38756 Safety and control devices for gas burners and gas-burning appliances - Particular requirements - Ignition unit
GB/T 39485 Safety and control devices for gas burners and gas-burning appliances - Particular requirements - Manual gas valves
GB/T 39488 Safety and control devices for gas burners and gas-burning appliances - Particular requirements - Electronic type gas and air ratio control system
GB/T 39493 Safety and control devices for gas burners and gas-burning appliances - Particular requirements - Pressure regulators
GB 41317 Stainless steel corrugated tubes for the connection of gas appliances
CJ/T 450 Pneumatic gas/air ratio adjustment devices for gas-burning appliances
3 Terms and definitions
The terms and definitions defined in GB/T 13611, GB/T 16411, GB/T 38603, as well […]
4 Classification and models
4.1 Classification
4.1.1 According to the type of gas used, appliances are classified into artificial gas appliances (code R, rated pressure 1000 Pa), natural gas appliances (code T, rated pressure 1000 Pa or 2000 Pa), liquefied petroleum gas appliances (code Y, rated pressure 2800 Pa or 5000 Pa).
4.1.2 According to the exhaust method, appliance classification is shown in Table 1.
4.1.3 According to the combustion method, appliances are classified into fully premixed appliances, atmospheric appliances, diffusion appliances.
4.1.4 Based on whether the latent heat of vaporization of water vapor in the flue gas is effectively utilized, gas appliances are classified into condensation type appliances and non-condensation type appliances.
4.1.5 Classification by function is shown in Table 2.
5 Requirements
5.1 Materials
5.1.1 General requirements
5.1.1.1 The materials used to manufacture the appliances shall be able to withstand the temperature and load under normal operating conditions.
5.1.1.2 The sealing materials in contact with the gas shall be compatible with the characteristics of the gas used.
5.1.1.3 Gas appliances shall not use materials containing asbestos.
5.1.1.4 The solder used in gas appliances shall not contain hexavalent chromium.
5.1.1.5 All components in contact with condensate, such as heat exchangers, flue pipes, seals, shall be made of corrosion-resistant materials or undergo surface anti-corrosion treatment.
5.1.2 Metallic materials
5.1.2.1 The metallic materials for gas pipelines shall conform to the specifications of GB/T 1527, GB/T 3091, GB/T 8163, or GB/T 12771.
5.1.2.2 Water pipelines for gas appliances shall be made of corrosion-resistant materials and materials that do not pollute the water.
5.1.2.3 Metal components that may be affected by corrosion (except for corrosion-resistant materials) shall undergo electroplating, painting, or other suitable surface anti-corrosion treatment.
5.1.2.4 Metal materials in contact with steam or food shall conform to the requirements of GB 4806.9.
5.1.2.5 The melting point of welding materials for gas pipelines shall not be lower than 450 °C.
5.1.3 Non-metallic materials
5.1.3.1 Sealing materials in contact with food shall conform to the requirements of GB 4806.11.
5.1.3.2 Enamel materials that may come into contact with food shall conform to the requirements of GB 4806.3.
5.1.3.3 Elastic sealing materials for gas pipelines shall conform to the requirements of […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 86 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 191Graphical symbols marking for handling and storage of packages
- GB/T 1527Drawn tube of copper and copper alloys
- GB/T 2828.1Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
- GB/T 3091Welded steel pipes for low pressure fluid delivery
- GB/T 4208Degrees of protection provided by enclosures (IP code)
- GB 4806.9National Food Safety Standard - Metal Materials and Products for Food Contact
GB 4706.1 · GB 4806.3 · GB/T 5013.1 · GB/T 7306 · CJ/T 450
Similar standards
Editions of GB 35848
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB 35848-2024 | Commercial gas-burning appliances | first revision | Current |
| GB 35848-2018 | Commercial gas-burning appliances | first issue | Superseded |
This page sells the current edition, GB 35848-2024. Earlier editions are listed for reference only.
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GB 35848-2024
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