GAS-FIRED CENTRAL HEATING BOILERS - SPECIFIC REQUIREMENTS FOR CONDENSING BOILERS WITH NOMINAL HEAT INPUT NOT EXCEEDING 70 KW

Published date

12-01-2013

Publisher

Foreword
1 Scope
2 Normative references
3 Definitions
    3.1 condensing boiler
    3.2 condensate
    3.3 nominal condensing output
    3.4 maximum allowable working temperature
4 Constructional requirements
    4.1 Materials in contact with condensate
    4.2 Removal of condensate
    4.3 Control of the combustion products temperature
    4.4 Chemical composition of the condensate
5 Operational requirements
    5.1 General
    5.2 Verification of the nominal condensing output
    5.3 Formation of condensate
    5.4 Temperature of combustion products
    5.5 Combustion
    5.6 Efficiencies
6 Test methods
    6.1 General
    6.2 Verification of the nominal condensing output
    6.3 Formation of condensates
    6.4 Temperature of combustion products
    6.5 Combustion
    6.6 Efficiencies
7 Marking
    7.1 Data plate
    7.2 Instructions
Annex A (normative) Correction for the determined efficiency
in the low water temperature test of condensing boilers
Annex B (informative) Special national conditions
Annex C (informative) A-deviations
Annex ZA (informative) Clauses of this European Standard
addressing essential requirements or other provisions of
EU Directives

Applicable to gas-fired central heating boilers, known as "condensing boilers" of types B (not including appliances without a fan) and to those using one or more gases corresponding to the three gas families and where the nominal heat input is not in excess of 70 kW.

DevelopmentNote	Indice de Classement: D35-346 Supersedes NFD 35 338 (04/2002)
DocumentType	Standard
PublisherName	Association Francaise de Normalisation
Status	Current
Supersedes	NFD 35 338 : 88 MOD 2 89