Gas-fired storage water heaters for the production of domestic hot water

This European Standard defines the specifications and test methods for the construction, safety, rational use
of energy and fitness for purpose, environment and classification and marking of gas-fired storage water
heaters for domestic hot water uses, hereafter called “appliance”.
This European Standard applies to appliances:
— of selected types B1, B2, B3, B5, C1, C2, C3, C4, C5, C6, C7, C8, C9 according to CEN/TR 1749;
— fitted with atmospheric burners;
— using one or more combustible gases corresponding to the three gas families and the pressures indicated
in EN 437;
— of nominal heat input not exceeding 150 kW (net calorific value);
— fitted with electrically operated mechanical flue dampers that are positioned downstream of the heat
exchanger.

Gasbeheizte Vorrats-Wasserheizer für den sanitären Gebrauch

Die vorliegende Europäische Norm legt die Anforderungen und die Prüfverfahren hinsichtlich der Konstruktion, der Sicherheit, des rationellen Energieeinsatzes und der Gebrauchsgüte, der Umweltbelastung sowie die Einteilung und Kennzeichnung von gasbeheizten Vorratswasserheizern für den sanitären Bereich (nachfolgend Wasserheizer genannt) fest.
Diese Europäische Norm gilt für Wasserheizer:
-   ausgewählte Bauarten B1, B2, B3, B5, C1, C2, C3, C4, C5, C6, C7, C8, C9 entsprechend CEN/TR 1749.
-   mit atmosphärischen Brennern;
-   die ein oder mehrere Gase der drei Gasfamilien mit den entsprechenden Drücken nach EN 437 verwenden;
-   mit einer Nennwärmebelastung nicht über 150 kW (bezogen auf den Heizwert);
-   die mit elektrisch betriebenen mechanischen Abgasklappen hinter dem Wärmeübertrager ausgerüstet sind.

Appareils de production d'eau chaude par accumulation pour usages sanitaires utilisant les combustibles gazeux

La présente Norme européenne définit les spécifications et les méthodes d'essai relatives à la construction, la sécurité, l'utilisation rationnelle de l'énergie, l'aptitude à la fonction, l'environnement, la classification et le marquage des appareils de production d'eau chaude par accumulation pour usages sanitaires utilisant les combustibles gazeux, appelés ci-après « appareil ».
La présente norme s'applique aux appareils :
-   sélectionnés parmi les types B1, B2, B3, B5, C1, C2, C3, C4, C5, C6, C7, C8, C9 selon le CEN/TR 1749 ;
-   équipés de brûleurs atmosphériques ;
-   utilisant un ou plusieurs combustibles gazeux correspondant aux trois familles de gaz et aux pressions indiquées dans l'EN 437 ;
-   de débit calorifique nominal inférieur ou égal à 150 kW (pouvoir calorifique inférieur) ;
-   équipés de registres de tirage mécaniques à commande électrique positionnés en aval de l'échangeur de chaleur et soumis à essai en tant que partie intégrante de l'appareil de production d'eau chaude.

Akumulacijski plinski grelniki vode za pripravo sanitarne tople vode

General Information

Status
Published
Public Enquiry End Date
19-May-2012
Publication Date
08-Jun-2015
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
22-May-2015
Due Date
27-Jul-2015
Completion Date
09-Jun-2015

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SLOVENSKI STANDARD
SIST EN 89:2015
01-julij-2015
1DGRPHãþD
SIST EN 89:2001
SIST EN 89:2001/A1:2001
SIST EN 89:2001/A2:2002
SIST EN 89:2001/A3:2007
SIST EN 89:2001/A4:2007
Akumulacijski plinski grelniki vode za pripravo sanitarne tople vode
Gas-fired storage water heaters for the production of domestic hot water
Gasbeheizte Vorrats-Wasserheizer für den sanitären Gebrauch

Appareils de production d'eau chaude par accumulation pour usages sanitaires utilisant

les combustibles gazeux
Ta slovenski standard je istoveten z: EN 89:2015
ICS:
91.140.65 Oprema za ogrevanje vode Water heating equipment
97.100.20 Plinski grelniki Gas heaters
SIST EN 89:2015 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 89:2015
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SIST EN 89:2015
EUROPEAN STANDARD
EN 89
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2015
ICS 91.140.65 Supersedes EN 89:1999
English Version
Gas-fired storage water heaters for the production of domestic
hot water

Appareils de production d'eau chaude par accumulation Gasbeheizte Vorrats-Wasserheizer für den sanitären

pour usages sanitaires utilisant les combustibles gazeux Gebrauch
This European Standard was approved by CEN on 29 November 2014.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European

Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national

standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same

status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United

Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 89:2015 E

worldwide for CEN national Members.
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SIST EN 89:2015
EN 89:2015 (E)
Contents Page

Foreword ..............................................................................................................................................................7

1 Scope ......................................................................................................................................................8

2 Normative references ............................................................................................................................8

3 Terms and definitions ........................................................................................................................ 10

4 Classification of storage water heaters ............................................................................................ 23

4.1 General ................................................................................................................................................. 23

4.2 Classification of gases ....................................................................................................................... 23

4.3 Appliance categories .......................................................................................................................... 23

4.4 Mode of supply of the combustion air and evacuation of the combustion products

(appliance types)................................................................................................................................. 23

5 Construction requirement .................................................................................................................. 23

5.1 Introduction ......................................................................................................................................... 23

5.2 General ................................................................................................................................................. 24

5.2.1 Conversion to different gases ........................................................................................................... 24

5.2.2 Materials .............................................................................................................................................. 24

5.2.3 Design - Assembly - Strength ............................................................................................................ 27

5.2.4 Accessibility - Ease of maintenance - Fitting and removal ............................................................ 27

5.2.5 Gas and water pipe connections ....................................................................................................... 27

5.2.6 Means of achieving soundness ......................................................................................................... 28

5.2.7 Supply of combustion air and evacuation of the combustion products ...................................... 29

5.2.8 Checking the state of operation ........................................................................................................ 32

5.2.9 Drainage ............................................................................................................................................... 32

5.2.10 Electrical safety................................................................................................................................... 32

5.2.11 Operational safety in the event of failure or restoration of the auxiliary energy ......................... 34

5.2.12 Mechanical resistance and stability of ducts, terminal and fitting pieces.................................... 34

5.3 Adjusting, control and safety devices .............................................................................................. 35

5.3.1 General ................................................................................................................................................. 35

5.3.2 User controls ....................................................................................................................................... 36

5.3.3 Preset gas rate adjusters ................................................................................................................... 37

5.3.4 Gas pressure regulator ...................................................................................................................... 37

5.3.5 Pressure test points ........................................................................................................................... 37

5.3.6 Ignition devices ................................................................................................................................... 38

5.3.7 Flame supervision device .................................................................................................................. 38

5.3.8 Combustion products discharge safety device ............................................................................... 39

5.3.9 Protection against accidental overheating ...................................................................................... 40

5.3.10 Control thermostat.............................................................................................................................. 40

5.3.11 Automatic shut-off valves .................................................................................................................. 40

5.3.12 Combustion products temperature limiter ....................................................................................... 41

5.3.13 Combined temperature and pressure relief valve ........................................................................... 41

5.3.14 Flue damper ......................................................................................................................................... 41

5.4 Main burner ......................................................................................................................................... 42

5.5 Supplementary requirements for condensing water heaters ........................................................ 42

5.5.1 Materials in contact with condensate ............................................................................................... 42

5.5.2 Discharge of condensate ................................................................................................................... 43

5.5.3 Control of the combustion products temperature .......................................................................... 43

5.5.4 Chemical composition of the condensate ....................................................................................... 43

6 Operational requirements .................................................................................................................. 43

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SIST EN 89:2015
EN 89:2015 (E)

6.1 Carrying out the tests ......................................................................................................................... 43

6.1.1 General ................................................................................................................................................. 43

6.1.2 Characteristics of the test gases ....................................................................................................... 44

6.1.3 Requirements for preparation of the test gases .............................................................................. 44

6.1.4 Choice of test gases ............................................................................................................................ 44

6.1.5 Test pressures ..................................................................................................................................... 44

6.1.6 General test conditions ....................................................................................................................... 44

6.2 Soundness ........................................................................................................................................... 48

6.2.1 Soundness of the gas circuit ............................................................................................................. 48

6.2.2 Soundness of the combustion circuit and evacuation of the combustion products ................... 49

6.2.3 Hydraulic test and soundness of the water circuit .......................................................................... 53

6.3 Heat inputs ........................................................................................................................................... 54

6.3.1 General ................................................................................................................................................. 54

6.3.2 Nominal heat input .............................................................................................................................. 55

6.4 Temperature of the control knobs ..................................................................................................... 56

6.4.1 Requirements ....................................................................................................................................... 56

6.4.2 Test ....................................................................................................................................................... 56

6.4.3 Supplementary requirements for type B , B and B water heaters ............................................. 57

14 2 3

6.5 Temperature of the adjusting, control and safety devices ............................................................. 57

6.5.1 Requirement ......................................................................................................................................... 57

6.5.2 Test ....................................................................................................................................................... 57

6.6 Limit temperature of the walls and the test panels .......................................................................... 57

6.6.1 Side walls, front and top ..................................................................................................................... 57

6.6.2 Test panels ........................................................................................................................................... 58

6.7 Ignition - Cross-lighting - Flame stability .......................................................................................... 59

6.7.1 Normal conditions ............................................................................................................................... 59

6.7.2 Special conditions ............................................................................................................................... 60

6.7.3 Reduction of supply to ignition burner ............................................................................................. 63

6.7.4 Additional requirements relating to operation of the permanent ignition burner when the

fan is stopped ...................................................................................................................................... 63

6.8 Temperature of combustion products in condensing appliances ................................................. 64

6.8.1 Requirements ....................................................................................................................................... 64

6.8.2 Tests ..................................................................................................................................................... 64

6.9 Adjusting, control and safety devices ............................................................................................... 64

6.9.1 General ................................................................................................................................................. 64

6.9.2 Ignition devices ................................................................................................................................... 64

6.9.3 Opening and safety times ................................................................................................................... 66

6.9.4 Endurance of thermostats and temperature limiters ....................................................................... 69

6.9.5 Operation of water temperature safety devices ............................................................................... 70

6.9.6 Combustion products evacuation safety device for type B appliances .................................. 71

11BS

6.9.7 Pressure regulator ............................................................................................................................... 73

6.9.8 Flue dampers ....................................................................................................................................... 74

6.10 Repeated draw-off ............................................................................................................................... 74

6.10.1 Requirements ....................................................................................................................................... 74

6.10.2 Tests ..................................................................................................................................................... 74

6.11 Nominal capacity ................................................................................................................................. 75

6.11.1 Requirements ....................................................................................................................................... 75

6.11.2 Tests ..................................................................................................................................................... 75

6.12 Combustion .......................................................................................................................................... 75

6.12.1 Requirements ....................................................................................................................................... 75

6.12.2 Tests ..................................................................................................................................................... 75

6.13 Non-condensation in the flue (type B appliances) ........................................................................... 79

6.13.1 Requirements ....................................................................................................................................... 79

6.13.2 Tests ..................................................................................................................................................... 79

6.14 Supplementary tests for condensing water heaters ........................................................................ 80

6.14.1 Formation of condensate.................................................................................................................... 80

6.14.2 Temperature of combustion products .............................................................................................. 81

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SIST EN 89:2015
EN 89:2015 (E)

6.15 Prepurging ........................................................................................................................................... 81

6.15.1 Requirements ...................................................................................................................................... 81

6.15.2 Test ....................................................................................................................................................... 82

6.16 Air monitoring device ......................................................................................................................... 82

6.16.1 Type B and B .................................................................................................................................. 82

12 13

6.16.2 Type C and other type B .................................................................................................................... 83

6.16.3 Gas/air ratio controls .......................................................................................................................... 84

6.17 Functioning of the fan of a type C water heater ............................................................................. 85

6.17.1 Requirements ...................................................................................................................................... 85

6.17.2 Tests ..................................................................................................................................................... 85

6.18 Nitrogen oxides ................................................................................................................................... 86

6.18.1 General ................................................................................................................................................. 86

6.18.2 Weighting ............................................................................................................................................. 87

6.19 Electrical power measurements ........................................................................................................ 88

6.19.1 Nominal conditions............................................................................................................................. 88

6.19.2 Standby ................................................................................................................................................ 88

7 Rational use of energy ....................................................................................................................... 88

7.1 Efficiency ............................................................................................................................................. 88

7.1.1 Requirements ...................................................................................................................................... 88

7.1.2 Tests ..................................................................................................................................................... 88

7.2 Maintenance consumption ................................................................................................................ 89

7.2.1 Requirements ...................................................................................................................................... 89

7.2.2 Tests ..................................................................................................................................................... 90

8 Fitness for purpose ............................................................................................................................ 91

8.1 Heating-up time ................................................................................................................................... 91

8.1.1 Requirements ...................................................................................................................................... 91

8.1.2 Tests ..................................................................................................................................................... 91

8.2 Mixing factor of the water temperature in the appliance ................................................................ 91

8.2.1 Requirements ...................................................................................................................................... 91

8.2.2 Tests ..................................................................................................................................................... 92

8.3 Draw-off limits causing operation of the burner ............................................................................. 92

8.3.1 Requirements ...................................................................................................................................... 92

8.3.2 Tests ..................................................................................................................................................... 92

8.4 Continuous draw-off ........................................................................................................................... 92

8.4.1 Requirements ...................................................................................................................................... 92

8.4.2 Tests ..................................................................................................................................................... 93

8.5 Requirements for the specific rate.................................................................................................... 93

8.6 Designation and measurement of reference temperatures of flue systems ................................ 93

8.6.1 Nominal working combustion products temperature ..................................................................... 93

8.6.2 Overheat combustion products temperature .................................................................................. 93

8.6.3 Mechanical resistance and stability of ducts, terminal and fitting pieces.................................... 93

8.7 Requirements for plastic in the combustion product evacuation ducts, terminals and

fitting pieces for appliances .............................................................................................................. 95

8.7.1 Thermal resistance ............................................................................................................................. 95

8.7.2 Materials .............................................................................................................................................. 95

8.8 Requirements for elastomeric seals and elastomeric sealants in the combustion product

evacuation ducts, terminals and fitting pieces .............................................................................. 101

8.8.1 Characterization ................................................................................................................................ 101

8.8.2 Long-term resistance to thermal load ............................................................................................ 101

8.8.3 Long-term resistance to condensate exposure ............................................................................. 102

8.8.4 Cyclic condensate resistance test .................................................................................................. 103

8.8.5 Relaxation behaviour ....................................................................................................................... 104

8.8.6 Compression set ............................................................................................................................... 104

8.8.7 Low temperature resistance ............................................................................................................ 105

8.8.8 Joints in elastomeric seals .............................................................................................................. 105

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SIST EN 89:2015
EN 89:2015 (E)

9 Marking and instructions .................................................................................................................. 105

9.1 Appliance marking ............................................................................................................................ 105

9.1.1 Data plate............................................................................................................................................ 105

9.1.2 Supplementary markings.................................................................................................................. 106

9.1.3 Packaging ........................................................................................................................................... 106

9.1.4 Warnings on the appliance and packaging .................................................................................... 107

9.1.5 Other information .............................................................................................................................. 107

9.1.6 Additional marking for appliances with flue dampers ................................................................... 107

9.2 Instructions ........................................................................................................................................ 107

9.2.1 Installation instructions .................................................................................................................... 107

9.2.2 Instructions for use ........................................................................................................................... 111

9.2.3 Conversion instructions ................................................................................................................... 112

9.3 Presentation ....................................................................................................................................... 112

10 Ecodesign Data .................................................................................................................................. 112

10.1 Water heating energy efficiency (η ) ............................................................................................. 112

10.2 Nitrogen oxides emissions ............................................................................................................... 113

10.3 Additional product information ........................................................................................................ 113

10.4 Storage volume .................................................................................................................................. 113

10.5 Mixed water at 40 °C (V40) ................................................................................................................ 113

11 Energy Labelling Data ....................................................................................................................... 113

11.1 General ............................................................................................................................................... 113

...

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