EN 497:1997

Foreword
1 Scope
2 Normative references
3 Definitions
4 Classification
5 Constructional characteristics
    5.1 Conversion to different gases
    5.2 Materials
    5.3 Ease of cleaning
    5.4 Strength
    5.5 Assembly
    5.6 Stability
    5.7 Soundness of the gas circuit assembly
    5.8 Connections
    5.9 Locking of wheels and castors
    5.10 Taps
    5.11 Control handles
    5.12 Injectors
    5.13 Ignition devices
    5.14 Flame supervision devices
    5.15 Burners
    5.16 Appliance incorporating a gas container
    5.17 Durability of markings
6 Performance characteristics
    6.1 Soundness
    6.2 Verification of the nominal heat input
    6.3 Flame supervision devices
    6.4 Safety of operation
    6.5 Temperatures
    6.6 Overheating of the gas container
    6.7 Combustion
    6.8 Sooting
    6.9 Rational use of energy
7 Test methods
    7.1 General
    7.2 Verification of the constructional characteristics
    7.3 Verification of the performance characteristics
8 Marking
    8.1 Appliance marking
    8.2 Packaging marking
    8.3 Instructions for assembly, use and maintenance
Annexes
A (normative) National situations
  A.1 Categories sold in various countries
  A.2 Nominal appliance supply pressures
  A.3 Types of connection used in various countries
B (normative) Method of calculation of the nominal heat
    input
C (normative) Composition of test gases
D (informative) Connection of appliances
ZA (informative) Clauses of this European Standard
    addressing essential requirements or other provisions
    of EU Directives
Figures
1 Diagrams showing multi-purpose boiling burners
2 Apparatus for testing soundness
3 Sampling device for checking combustion

This standard specifies the constructional and performance characteristics, safety specifications and rational use of energy, relevant test methods and marking of boiling burners burning liquefied petroleum gas and designed to heat up vessels containing liquids or food, or a heating plate. They are referred to in the body of the text as "appliances". This standard covers appliances, generally floor standing, fitted with one or several burners with a total heat input not exceeding 14 kW, designed to be used outdoors and operating with the gases indicated in 4.1 according to the categories indicated in 4.2. Appliances supplied with third family gas at pressures greater those defined in 4.2 are outside the field of application of this standard. Appliances covered by this standard are not connected to a flue for the products of combustion and are not connected to the mains electrical supply. Appliances with a nominal heat input below 1,16 kW and appliances which are not designed to receive the test vessel described in 7.1.4 in any of their configurations are not subject to any requirement concerning the rational use of energy. This standard applies only to type testing.