1 Scope
This standard specifies the terms and definitions, classification and model, materials and structural requirements, performance requirements, test methods, inspection rules and marking, installation, packaging, transportation and storage of domestic gas instantaneous water heater.
The standard is applicable to domestic gas instantaneous water heater for hot water (hereinafter referred to as “water heater for hot water”) with rated heat input no greater than 70kW; indoor forced gas supply and exhaust water heater, outdoor domestic gas instantaneous water heater for heating (hereinafter referred to as “water heater for heating”) with rated heat input no greater than 70kW, with maximum heating working water pressure no greater than 0.3 MPa, heating water temperature no greater than 95℃, and domestic gas instantaneous water heater for heating and hot water (hereinafter referred to as “water heater for heating and hot water”), including the special requirements of condensing water heater for hot water, water heater for heating and water heater for heating and hot water.
The standard is not applicable to gas volume water heater.
Notes:
1 The gas in this standard refers to the gas specified in GB/T 13611 Classification and basic characteristics of city gas and GB 13612 Manufactured gas; where gas except those specified in GB/T 13611 is used, the gas for test is conducted in accordance with the gas provided in product design and the pressure scope refers to those specified in GB/T 13611.
2 Domestic gas instantaneous water heater for hot water, domestic gas instantaneous water heater for heating, and domestic gas instantaneous water heater for heating and hot water are collectively referred to as the domestic gas instantaneous water heater (hereinafter referred to as “water heater”).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging-pictorial marking for handling of goods
GB/T 2828.1 Sampling procedures for inspection by attributes - Part1: sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
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 3280 Cold rolled stainless steel plate sheet and strip
GB 4208 Degrees of protection provided by enclosure (IP code)
GB 4706.1-2005 Household and similar electrical appliances - Safety Part 1: general requirements
GB/T 5013.1 Rubber insulated cables of rated voltages up to and including 450/750 V - Part 1: general requirements
GB/T 5023.1 Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V - Part 1: general requirements
GB/T 5465.2 Graphical symbols for use on electrical equipment - Part 2: graphical symbols
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 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 2: taper internal and external threads
GB/T 7307 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads
GB/T 12113-2003 Methods of measurement of touch current and protective conductor current
GB/T 12206-2006 Testing method to determine the calorific values of town gas
GB/T 13611 Classification and basic characteristics of city gas
GB 14536.1 Automatic electrical controls for household and similar use - Part 1: general requirements
GB 14536.6 Automatic electrical controls for household and similar use - Particular requirements for automatic electrical burner control systems
GB/T 16411-2008 Universal test methods of gas burning appliances for domestic use
GB/T 17624.1 Electromagnetic compatibility - General application and interpretation of fundamental definitions and terms
GB/T 17626.4 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient/burst immunity test
GB/T 17626.5 Electromagnetic compatibility - Testing and measurement techniques - Surge immunity test
GB/T 17626.11 Electromagnetic compatibility - Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests
GB/T 17627.1 High-voltage test techniques for low voltage equipment - Part 1: definitions, test and procedure requirements
GB/T 17799.1-1999 Electromagnetic compatibility - Generic standards - Immunity for residential, commercial and light-industrial environments
GB 19212.10 Safety of transformers, reactors, power supply units and combinations thereof — Part 10:particular requirements and tests for transformers and power supply units for Class III hand-lamps for tungsten filament lamps
CJJ 12 Specification for mounting and acceptance of domestic gas burning appliances
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 4706.1-2005, GB/T 13611, GB 14536.1, GB 14536.6, GB/T 16411, GB/T 17624.1 and the following ones apply.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and model
5 Materials and structural requirements
6 Performance requirements
7 Test method
8 Inspection rules
9 Marking, installation, packaging, transportation and storage
Appendix A (Normative) Special requirements on domestic gas instantaneous water heater for heating and domestic gas instantaneous water heater for heating and hot water
Annex B (Normative) Special requirements on condensing water heater
Annex C (Normative) Electrical safety of water heater using alternating current
Annex D (Normative) Electromagnetic compatibility safety and control requirements for electronic control system
Annex E (Informative) Grading requirements for oxynitride content φ[NOx(α=1)] in the combusting flue gas of water heaters
Annex F (Normative) Technical requirements for water heater installation
Annex G (Normative) Intrinsic heat loss of test device and heat effect of circulating pump in indirect method
Annex H (Normative) Determination method of ignition time under full load
