ONORM EN 521 : 2006
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
15-10-2019
12-01-2013
Foreword
1 Scope
2 Normative references
3 Definitions
4 Classification
5 Safety requirements
5.1 General
5.2 Conversion to different gases
5.3 Materials
5.4 Assembly, cleaning and maintenance
5.5 Strength and stability
5.6 Soundness of the gas circuit assembly
5.7 Connections
5.8 Transport, fixing and mobility devices
5.9 Taps
5.10 Control handles
5.11 Injectors
5.12 Ignition devices
5.13 Flame supervision devices
5.14 Burners and radiant elements
5.15 Grids
5.16 Turnspit
5.17 Fireguards for heating appliances
5.18 Locations and compartments for refillable gas
containers
5.19 Verification of the heat inputs
5.20 Resistance to overheating
5.21 Temperature of various parts of the appliance
5.22 Temperature of panels (floors, walls or ceilings)
5.23 Ignition, crosslighting and flame stability
5.24 Resistance to draught
5.25 Resistance to liquid spillage
5.26 Combustion
5.27 Accumulation of unburnt gas
5.28 Safety at high temperature
5.29 Sooting - Condensation
5.30 Rational use of energy
6 Test methods
6.1 General
6.2 Conversion to different gases
6.3 Materials
6.4 Assembly, cleaning and maintenance
6.5 Strength and stability
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