EN 461:1999/A1:2004

1 Scope
2 Normative References
3 Definitions
4 Classification
  4.1 Classification of gases
  4.2 Classification of appliances
5 Safety and Constructional Requirements
  5.1 General
  5.2 Conversion to different gases
  5.3 Materials
  5.4 Cleaning and maintenance
  5.5 Strength of assembly
  5.6 Soundness of the gas circuit assembly
  5.7 Connections
  5.8 Appliance stability, fixing and mobility devices
  5.9 Taps and controls
  5.10 Control handles, knobs and push buttons
  5.11 Injectors
  5.12 Ignition devices
  5.13 Safety devices
  5.14 Appliance ventilation
  5.15 Verification of the heat inputs
  5.16 Effect of light back
  5.17 Temperatures of various parts of the appliance
  5.18 Temperature of the support, walls and adjacent
       surfaces
  5.19 Temperature of taps and components
  5.20 Overheating of the LPG cylinder and, where
       applicable, its compartment
  5.21 Ignition
  5.22 Crosslighting
  5.23 Flame stability
  5.24 Combustion
  5.25 Additional requirements
6 Test Methods
  6.1 General
  6.2 Conversion to different gases
  6.3 Materials
  6.4 Cleaning and maintenance
  6.5 Strength of assembly
  6.6 Soundness of the gas circuit assembly
  6.7 Connections
  6.8 Appliance stability, fixing and mobility devices
  6.9 Taps and controls
  6.10 Control handles
  6.11 Injectors
  6.12 Ignition devices
  6.13 Safety devices
  6.14 Appliance ventilation
  6.15 Verification of the heat input
  6.16 Effect of light back
  6.17 Temperatures of various parts of the appliance
  6.18 Temperatures of the support, walls and adjacent
       surfaces
  6.19 Temperatures of taps and components
  6.20 Overheating of the LPG cylinder and, where
       applicable, its compartment
  6.21 Ignition
  6.22 Crosslighting
  6.23 Flame stability
  6.24 Combustion
  6.25 Additional requirements
7 Marking, Instruction Literature and Packaging
  7.1 General
  7.2 Appliance marking
  7.3 Instructions for use and user maintenance
  7.4 Instructions for adjustment and installation
  7.5 Servicing instructions
  7.6 Packaging
Annex A (informative) Special national conditions
Annex B (normative) Vitiation room (see Figure B.1)
Annex C (informative) Air supply and ventilation
Annex ZA (informative) Clauses of this European Standard
         addressing essential requirements or other
         provisions of EU Directives

This European Standard defines requirements and test methods concerning, in particular, the construction, safety as well as classification and marking of non-domestic flueless space heaters (including greenhouse heaters and diffusive catalytic combustion heaters), having a nominal heat input not exceeding 10 kW (Hs) burning 3rd family gases at nominal operating pressure not exceeding 50 mbar, referred to in the body of the text as 'appliances'.