UNI EN 525 : 2009
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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NON-DOMESTIC DIRECT GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 300 KW
13-08-2022
01-01-2009
Foreword
1 Scope
2 Normative references
3 Terms and definitions
3.1 Appliance and its constituent parts
3.2 Adjustment, control and safety devices
3.3 Appliance operation
3.4 Gases
3.5 Conditions of operation and measurement
3.6 Marking of the appliance and packaging
4 Classification
4.1 Classification of gases
4.2 Classification of appliance
5 Construction and design requirements
5.1 General
5.2 Adjusting, control and safety devices
5.3 Ignition devices
5.4 Combustion and dilution air, pre-purge and post-purge
5.5 Flame supervision system
5.6 Start-gas flame establishment
5.7 Main flame establishment
5.8 Main burner
5.9 Facility for remote control
5.10 Thermostats and control of air temperature
5.11 Gas pressure points
5.12 Facilities for commissioning and testing
5.13 Additional requirements for appliances designed for
permanent outdoor installation
6 Operational requirements
6.1 Soundness of the gas circuit
6.2 Heat inputs
6.3 Limiting temperatures
6.4 Ignition, cross-lighting, flame stability
6.5 Combustion
6.6 Overheat cut-off device
6.7 Air proving device(s)
6.8 Weather resistance
7 Test methods
7.1 General
7.2 Automatic burner control systems (manually operated
devices)
7.3 Safety of operation
8 Marking and instructions
8.1 General
8.2 Description
8.3 Data plate
8.4 Other marking
8.5 Marking on the packaging
8.6 Profile plate
8.7 Instructions
Annex A (informative) National situations
Annex B (normative) Identification of symbols used for
marking
Annex C (informative) Guidance for limitations of
application of direct-fired air heaters in
buildings
Annex D (normative) Special national conditions
Annex E (informative) National solutions for countries
whose national bodies are Affiliate Members of CEN
Annex ZA (informative) Relationship between this European
Standard and the Essential Requirements of EU
Directive 90/396/EEC (Gas Appliance Directive)
Bibliography
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