CEN/TR 1749:2014

Foreword
1 Scope
2 General scheme
3 Supplementary classification scheme for type
  A and type B appliances fitted with particular
  safety devices
4 Supplementary classification scheme for type B
  appliances for use in limited installation conditions
5 Supplementary classification scheme for
  type C appliances for use in limited installation
  conditions - Type C[1] appliances utilizing a
  third subscript 'R'
Annex A (normative) - Classification according to the
        mode of evacuation of the products of combustion
Annex B (normative) - Special national appliance classification
        (types) - Germany
Annex C (informative) - Special national appliance classification
        (types) - France
Annex D (normative) - Special national appliance classification
        (types) - Slovenia
Annex E (informative) - Appliance types designed for connection
        to separate chimney products
Bibliography

This Technical Report gives details of a general scheme for the classification of gas appliances according to the method of supplying combustion air and of evacuating the products of combustion. This scheme refers to gas appliances that are intended to be installed within buildings and/or to gas appliances intended ) for installation in a partially protected place external to a building.This Technical Report is a guide for the harmonization of product standards and for the common understanding of the types of gas appliances.This TR is not intended to be used as an installation standard or as a product standard, nor as a reference for market surveillance.