DIN EN 621:2010-04

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Construction and design requirements
6 Operational requirements
7 Test methods
8 Marking and instructions
9 Evaluation of POCED conformity and their
  associated terminals
Annex A (informative) National situations
Annex B (informative) Equivalence rules
Annex C (informative) Facilities for commissioning
         and testing
Annex D (informative) Identification of gas types in
         use in various countries
Annex E (informative) A-deviations
Annex F (normative) Special national conditions
Annex G (informative) National solutions for countries
         whose national bodies are Affiliate Members of CEN
Annex H (informative) Calculation of conversions of NOx
Annex I (informative) An example of a sampling plan
Annex ZA (informative) Relationship between this European
         Standard and the Essential Requirements
         of EU Directive 90/396/EEC
Annex ZB (informative) Clauses of this European Standard
         addressing the provisions of the EU Construction
         Products Directive
Bibliography
National Annex NA (informative) Bibliography

Defines the requirements and test methods for the safety and efficiency of nondomestic gas-fired air heaters not exceeding a net heat input of 300 kW with (an) atmospheric burner(s) and without a fan to assist the transportation of combustion air and/or flue gases, hereafter referred to as "appliances".