NEN EN 89 : 2015

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification of storage water heaters
      4.1 Classification of gases
      4.2 Appliance categories
      4.3 Mode of supply of the combustion air and
             evacuation of the combustion products
             (appliance types)
5 Marking and instructions
      5.1 Appliance marking
      5.2 Instructions
      5.3 Presentation
6 Constructional requirement
      6.1 General
      6.2 Adjusting, control and safety devices
      6.3 Main burner
      6.4 Discharge of condensate
7 Operational requirements
      7.1 Carrying out the tests
      7.2 Soundness
      7.3 Heat inputs
      7.4 Temperature of the control knobs
      7.5 Temperature of the adjusting, control and safety
             devices
      7.6 Limit temperature of the walls and the test
             panels
      7.7 Ignition - Cross-lighting - Flame stability
      7.8 Temperature of combustion products in condensing
             appliances
      7.9 Adjusting, control and safety devices
      7.10 Repeated draw-off
      7.11 Nominal capacity
      7.12 Combustion
      7.13 Non-condensation in the flue (Type B appliances)
      7.14 Formation of condensate (in the case of
             condensing appliances)
      7.15 Prepurging
      7.16 Air monitoring device
8 Rationale use of energy
      8.1 Efficiency
      8.2 Maintenance consumption
9 Fitness for purpose
      9.1 Heating-up time
      9.2 Mixing factor of the water temperature in the
             appliance
      9.3 Draw-off limits causing operation of the burner
      9.4 Continuous draw-off
      9.5 Specific rate
Annex A (informative) National situations
Annex B (normative) Test apparatus for Type C11 appliances
                    (see 7.7.2.2.2.1)
Annex C (normative) Test apparatus for Type C21 appliances
                    (see 7.7.2.2.2.2)
Annex D (informative) Examples of composition of the gas
                      circuit
Annex E (normative) Soundness test - Volumetric method
Annex F (informative) Guidelines for extension to other
                      categories
Annex G (informative) Protection against electric shock for
                      high voltage ignition devices
                      (see 6.1.10)
Annex H (informative) Examples of marking on the appliance
Annex J (normative) Marking on the appliance and its
                    packaging - Explicit identification of
                    gas types following the use declared by
                    the countries in their official
                    language(s)
Annex K (informative) A-deviations
Annex L (normative) Special national conditions
Annex ZA (informative) Clauses of this European Standard
                       addressing essential requirements or
                       other provisions of EU Directives