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BS EN IEC 60379:2023

BS EN IEC 60379:2023

$189.07

Methods for measuring the performance of electric storage water heaters for household purposes

Published By Publication Date Number of Pages
BSI 2023 46
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This Standard specifies methods for measuring the performance of electric storage water heaters to produce domestic potable or non-potable hot water for household and similar use. The object is to state and define the principal performance characteristics of electric storage water heaters and to describe the test methods for measuring these characteristics. NOTE 1 This standard does not apply to; – storage water heaters that use electricity as a secondary source of heating the water; – storage water heaters that do not use a tank to storage hot water; – electric storage water heaters that do not meet the minimum (or maximum) output performance of the smallest (or biggest) load profile, as defined in Table 4. – water-heaters without thermal insulation NOTE 2 This standard does not specify safety requirements. For safety requirements see IEC 60335-1 in conjunction with IEC 60335-2-21.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 European foreword
Endorsement notice
6 English
CONTENTS
8 FOREWORD
10 1 Scope
2 Normative references
3 Terms and definitions
13 4 Symbols and units
14 5 Calculation of the electrical energy efficiency (elecwh)
6 Measured parameters
7 General conditions for measurements
15 Tables
Table 1 – Electricity
Table 2 – Test conditions, outputs, set values and tolerances.
16 8 Reference conditions
17 Table 3 – Load profile of the water heater (reference test tapping patterns)
19 9 Test procedures
9.1 Standard test procedure
9.1.1 General
9.1.2 Installation
9.1.3 Stabilisation
Figures
Figure 1 – Test procedurefor “energized appliances”
Figure 2 – Test procedurefor “off-peak appliances”
20 9.1.4 Storage volume
9.1.5 Filling and heat-up
Table 4 – Tolerance of the rated storage volume
21 9.1.6 Stabilisation at zero-load and cyclic temperature variation (differential)
9.1.7 Tapping
22 9.1.8 Reporting of Qelec
9.1.9 Re-stabilisation at zero-load
9.1.10 Mixed water quantity delivered at 40 °C
24 9.2 Smart control test procedure
9.2.1 Measurement procedure
9.2.2 Installation
9.2.3 Stabilisation
9.2.4 Filling and heat-up
Figure 3 – Test procedure for “smart cycle”
25 9.2.5 Stabilisation before reference period
9.2.6 Reference period
Table 5 – Tapping profiles
26 9.2.7 Smart period
27 9.2.8 Reporting of the smart control factor
9.2.9 WHL control cycle
9.3 Measurement of stored water temperatures
28 9.4 Thermostat setting
29 9.5 Standing loss per 24 h
9.5.1 General
9.5.2 Single-tank standing loss
9.5.3 Multi-tank standing loss for directly measurable products
31 9.5.4 Multi-tank standing loss for not directly measurable products
Figure 4 – Assembly scheme
32 Figure 5 – Assembly scheme BENCH
33 9.6 Hot water output
9.7 Maximum hot water output
Table 6 – Rated capacity and flow rates
34 10 Data report
35 Table 7 – Data report
36 Annex A (normative)Calculation of the specific energy efficiency andof the annual consumption of electric energy
A.1 Symbols and units
A.2 Calculation of the specific energy efficiency
37 A.3 Calculation of the annual consumption of electric energy
A.4 Data report
Table A.8 – k values
Table A.9 – Complements to data report
38 Annex B (normative)Test setup
39 Figure B.1 – Schematic representation of storage water-heaters
40 Figure B.2 – Position of the thermocouples for vertical and horizontal models
41 Figure B.3 – Example of hydraulic connection (unvented products)
42 Figure B.4 – Schemes for directly measurable multi-tank appliances
43 Figure B.5 – Directly measurable multi tank
Figure B.6 – Not directly measurable multi tank
44 Table B.1 – Thickness of insulation according to size of pipe or connection

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BS EN IEC 60379:2023
$189.07