ONORM 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

Defines 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 vessels containing liquid or food, or a heating plate.