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BSI PD ISO/TS 21364-21:2021

BSI PD ISO/TS 21364-21:2021

$167.15

Domestic gas cooking appliances. Safety – Particular requirements for gas hobs, gas grills and gas griddles

Published By Publication Date Number of Pages
BSI 2021 36
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This document specifies particular requirements for safety, construction and materials of household gas surface cooking appliances. For general requirements for safety, construction and materials of gas hobs, see ISO/TS 21364-1:2021.

This document covers the following:

  • surface cooking appliances:

    • hobs;

    • surface grills;

    • griddles;

    being built-in, part of a cooking appliance or table top;

  • hobs accessories.

It does not cover surface cooking appliances intended for outdoor use and/or commercial use as well as electrical heated elements as part of the appliance. It also does not cover appliances with automatic burner control systems.

NOTE 1

For requirements of electrical safety refer to the IEC 60335 standard series.

NOTE 2

Attention is drawn to the fact that

  • for appliances intended to be used in vehicles or on board of ships or aircrafts, additional requirements could be necessary;

  • in many countries additional requirements are specified by the national health authorities, the national water supply authorities and similar authorities.

This document does not cover requirements relating to gas cylinders, their pressure regulators and their connections.

This document does not cover requirements for gas installation.

PDF Catalog

PDF Pages PDF Title
2 National foreword
8 Foreword
9 Introduction
11 1 Scope
2 Normative references
12 3 Terms and definitions
3.1 Definitions relating to components
4 Components in gas cooking appliances
4.1 General
4.2 Manual gas shut-off valves (Taps)
13 4.2.1 Taps for multi-ring burners
4.3 Knobs
4.3.1 Design of knobs
4.4 Multifunctional controls
4.5 Thermoelectric flame supervision controls
4.6 Thermostats
4.7 Pressure regulators
4.8 Automatic shut-off valves
4.9 Injectors and adjusters
4.10 Ignition systems
4.11 Thermal cut-outs
4.12 Multi-ring burners
14 4.13 Overheating safety devices
4.13.1 Requirement
15 4.13.2 Test
5 General conditions of test
6 Heat input
6.1 General
6.2 Obtaining the nominal heat input
6.2.1 Test of hob burner
16 6.2.2 Test of multi-ring hob burner
6.2.3 Test of surface grill and griddle without a thermostat
6.2.4 Test of surface grill and griddle with a thermostat
6.3 Measurements and calculations
6.4 Obtaining the reduced heat input
6.4.1 Requirement
6.4.2 Test
6.4.3 Test of hob burner, surface grill and griddle burner
17 6.5 Total heat input
7 Heating
7.1 General
7.2 Operating conditions
7.3 Heating tests
7.4 Abnormal operation
7.4.1 Hob burner
7.4.2 Gas griddles
18 8 Combustion
8.1 Measurement of all burners simultaneously
8.2 Blocked combustion products outlet
8.3 Analysis of the combustion products
8.4 Single burner
8.4.1 General requirement
8.4.2 Hob burner, surface grill burner and griddle burner
20 8.4.3 Tests of multi-ring burner
8.4.4 Additional test of Type II and Type V multi-ring burners
8.4.5 Sampling the combustion products
23 8.5 Sooting
8.5.1 Requirement
8.5.2 Test
24 9 Ignition, cross-lighting and flame stability
9.1 General
9.2 Movement of oven/grill door or cabinet door
9.3 Hob burner, surface grill burner and griddle burner
9.3.1 General
9.3.2 Cold conditions
25 9.3.3 Hot conditions
26 9.4 Multi-ring hob burner
9.4.1 Requirement
9.4.2 Additional test for Type I multi-ring burners
9.4.3 Additional test for Type II and Type V multi-ring burners
9.4.4 Resistance to draught
27 10 Accumulation of unburnt gas and leak tightness
11 Construction
28 11.1 General
11.2 Materials
11.2.1 General
11.2.2 Burner material test
11.2.3 Sealings
11.2.4 Resistance for non-metallic feet of pan supports
11.3 Gas inlet connections
11.4 Conversion to different gases
11.5 Pull forces of knobs for manual gas shut-off valves (taps)
11.6 Appliances that enable the user to program the start or the end of the cooking cycle
11.7 Compartment for one gas cylinder
11.8 Touch controls
29 11.8.1 Requirement
11.8.2 Test
11.9 Resistance to spillage
11.9.1 Requirement
11.9.2 Test
11.10 Specific hob parts and hob accessories
11.10.1 Pan supports
30 11.10.2 Removable devices for small pans
11.10.3 Special supports for convex-based pans
11.10.4 Covered burners
31 11.11 Shut down lids
11.11.1 Requirement
11.11.2 Test
11.11.3 Glass shut down lids
11.11.4 Shut-off device
12 Mechanical strength
12.1 Parts made of glass and glass-ceramic
32 12.1.1 General
12.1.2 Spring hammer test
12.1.3 Punch test
12.1.4 Thermal stress resistance for glass and glass-ceramic hob surfaces
12.2 Pan support
12.2.1 Requirement
12.2.2 Test
12.3 Pan support in contact with the glass or glass ceramic of the hob
13 Electrical safety
14 Marking and instructions
33 Annex A (informative) National deviations in various countries

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BSI PD ISO/TS 21364-21:2021
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