ДСТУ EN 12897:2022 Водопостачання. Технічні умови для невентильованих (закритих) накопичувальних водонагрівачів із непрямим нагріванням (EN 12897:2016+A1:2020, IDT)



ДСТУ EN 12897:2022
(EN 12897:2016+A1:2020, IDT)

Водопостачання. Технічні умови для невентильованих (закритих)
накопичувальних водонагрівачів із непрямим нагріванням

 
   
 
 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

European foreword

Introduction

1 Scope

2 Normative references

3 Terms, definitions and symbols

3.1 Terms and definitions

3.2 Symbols

4 Requirements

4.1 Constructional requirements

4.1.1 Inspection access

4.1.2 Draining

4.1.3 Hydraulic connections

4.2 Temperature control

4.3 Mechanical resistance and stability

4.3.1 Pressure resistance of water storage vessel

4.3.2 Pressure resistance of primary heater

4.3.3 Durability

4.3.4 Leakage test on double-walled primary heater

4.4 Safety equipment

4.4.1 General

4.4.2 Energy cut-out device

4.4.3 Temperature relief valve

4.4.4 Pressure relief/expansion valve

4.4.5 Pressure reducing valve

4.4.6 Provision for expansion

4.4.7 Backflow prevention

5 Marking

6 Evaluation of conformity

6.1 General

6.1.1 Compliance testing

6.1.2 Market surveillance

6.2 Initial type testing

6.2.1 General

6.2.2 Actual volume

6.2.3 Rated storage volume

6.2.4 Hot water volume

6.2.5 Primary heating power (heat exchanger performance)

6.2.6 Durability testing

6.2.7 Double-walled primary heaters

6.2.8 Standing heat loss

6.2.9 Pressure resistance

6.2.10 Temperature control devices

6.2.11 Heat exchanger pressure drop

6.3 Production testing

6.4 Factory production control (FPC)

7 Technical documents

7.1 General

7.2 Assembly and maintenance instructions

7.3 Operating instructions

Annex A (normative) Hot water safety and performance testing

A.1 Tests required

A.2 Test apparatus and tolerances

A.3 Performance tests

A.4 Interpretation and calculation of hot water performance results

A.5 Function of safety devices

Annex B (normative) Measurement of standing heat loss for factory insulated storage water heaters

B.1 General

B.2 Apparatus

B.3 Test Procedure

B.4 Calculation of Results

Annex C (informative) Inspection access

Annex ZA (informative) Relationship between this European Standard and the requirements of Commission Delegated Regulation (EU) No 812/2013 of 18 February 2013 supplementing Directive 2010/30/EU regarding energy labelling of water heaters, hot water storage tanks and packages of water heater and solar device

Annex ZB (informative) Relationship between this European Standard and the requirements of Commission Regulation (EU) No 814/2013 of 2 August 2013 implementing Directive 2009/125/EC with regard to ecodesign requirements for water heaters and hot water storage tanks

Bibliography