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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Non-domestic direct gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW
03-16-2022
05-27-2009
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
A.1 General
A.2 Categories listed in the body of the standard
and marketed in different countries
A.3 Appliance supply pressures corresponding to
the categories given in A.2
A.4 Special categories marketed nationally or
locally
A.5 Test gases corresponding to the special
categories given in A.4
A.6 Gas connections in the various countries
Annex B (normative) - Identification of symbols used
for marking
B.1 Designation of country of destination
B.2 Category
B.3 Supplementary transitional information
Annex C (informative) - Guidance for limitations of
application of direct-fired air heaters in
buildings
C.1 Introduction
C.2 General principles
C.3 Safe operating emission levels
C.4 Assessment of concentrations
C.5 Case studies
Annex D (normative) - Special national conditions
D.1 General
D.2 Belgium
D.3 Italy
Annex E (informative) - National solutions for countries
whose national bodies are Affiliate Members
of CEN
E.1 Categories listed in the body of the standard
and marketed in different countries
E.2 Appliance supply pressures corresponding to
the categories given in E.1
E.3 Special categories marketed nationally or locally
E.4 Gases and test pressures corresponding to the
special categories given in E.3
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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