SIST EN 15332:2020/oprA1:2022
(Amendment)Heating boilers - Energy assessment of hot water storage tanks
Heating boilers - Energy assessment of hot water storage tanks
This document specifies a method for the energy assessment of domestic/sanitary hot water storage tanks of up to 2 000 l.
Whilst this document does not cover water heaters intended primarily for direct heating, it does allow the provision of electric heating elements for auxiliary use.
Primary heating buffer tanks are not covered by this document. Heat losses of domestic hot water storage tanks integrated into combi boilers marketed as a single unit are not covered by this document.
Heizkessel - Energetische Bewertung von Warmwasserspeichern
Chaudières de chauffage - Évaluation énergétique des ballons d'eau chaude
Kotli za ogrevanje - Energijsko ocenjevanje hranilnikov tople vode - Dopolnilo A1
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 15332:2020/oprA1:2022
01-december-2022
Kotli za gretje - Energijsko ocenjevanje hranilnikov tople vode - Dopolnilo A1
Heating boilers - Energy assessment of hot water storage tanks
Heizkessel - Energetische Bewertung von Warmwasserspeichern
Chaudières de chauffage - Évaluation énergétique des ballons d'eau chaude
Ta slovenski standard je istoveten z: EN 15332:2019/prA1
ICS:
27.015 Energijska učinkovitost. Energy efficiency. Energy
Ohranjanje energije na conservation in general
splošno
27.060.01 Gorilniki in grelniki vode na Burners and boilers in
splošno general
91.140.65 Oprema za ogrevanje vode Water heating equipment
SIST EN 15332:2020/oprA1:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 15332:2020/oprA1:2022
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SIST EN 15332:2020/oprA1:2022
DRAFT
EUROPEAN STANDARD
EN 15332:2019
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
December 2022
ICS
English Version
Heating boilers - Energy assessment of hot water storage
tanks
Chaudières de chauffage - Évaluation énergétique des Heizkessel - Energetische Bewertung von
ballons d'eau chaude Warmwasserspeichern
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 57.
This draft amendment A1, if approved, will modify the European Standard EN 15332:2019. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.
This draft amendment was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15332:2019/prA1:2022 E
worldwide for CEN national Members.
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SIST EN 15332:2020/oprA1:2022
EN 15332:2019/prA1:2022 (E)
Contents
European foreword . 3
1 Modifications to Clause 3. 4
2 Modifications to Clause 4. 5
3 Modifications to Clause 5. 6
4 Modifications to annexes . 10
Annex ZA (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EC) No [814/2013] aimed to be covered . 11
Annex ZB (informative) Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EC) No [812/2013] aimed to be covered . 12
2
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SIST EN 15332:2020/oprA1:2022
EN 15332:2019/prA1:2022 (E)
European foreword
This document (EN 15332:2019/prA1:2022) has been prepared by Technical Committee CEN/TC 57
“Central heating boilers”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
EN 15332 is revised to update it for:
— corrections of abbreviations, formulas and keys and
— corrections the standards body text and annexes
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annexes ZA and ZB, which are
integral parts of this document.
3
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SIST EN 15332:2020/oprA1:2022
EN 15332:2019/prA1:2022 (E)
1 Modifications to Clause 3
Replace the terms and definitions after 3.5 with the following:
3.6
storage temperature
T
s
temperature of the storage tank measured at the thermostat position, which is intended for this purpose
3.7
ambient temperature
T
amb
temperature in the environment of the hot water storage tank measured according to 5.3.1
3.8
storage excess temperature
ΔT
x
temperature difference between the storage temperature and the ambient temperature:
ΔT = T − T
x sm amb
3.9
rated storage volume
V
R
capacity of the storage tank assigned by the manufacturer, in litres
Note 1 to entry: Rated storage volume is the sum of the domestic water side volume, heating water and the
volume in additionally heat exchangers e.g. solar systems.
3.10
actual domestic storage volume
V
capacity of the domestic water side of specific storage tank used during measurements and determined
by volume measuring or balancing, in litres
Note 1 to entry: The heat exchanger(s) is/are empty.
3.11
hot water volume
V
U
quantity of hot water, in litre, at usable temperature T which is tapped during a specifc time from the
u
charged storage tank
3.12
standing heat loss
Q
B
energy loss, in kWh/d, at 65 °C against environment with an ambient temperature of T = 20 °C, but at
amb
least 45 K excess temperature
3.13
cycle time
Δt
time interval of the data acquisition, in seconds
4
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SIST EN 15332:2020/oprA1:2022
EN 15332:2019/prA1:2022 (E)
3.14
nominal storage temperature
T
sn
temperature of the stored water in the tank as measured by the thermostat
3.15
primary heating buffer tank
storage tank that is only filled with primary water
3.16
buffer tank
heat store filled with water, in which the contents do not come into contact with the atmosphere and
which can collect energy from various sources, store it, and deliver it at a later point in time
2 Modifications to Clause 4
Replace 4.1 with the following:
4.1 Environment
The ambient temperature shall be (20 ± 3) °C. The air speed where the ambient temperature is measured
(see Figure 3) shall not exceed 0,25 m/s and test room conditions shall be such that condensation is
avoided.
The storage tank shall be protected from radiation from the environment.
Replace 4.2 with the following:
4.2 Measuring accuracy
4.2.1 Temperature
Temperatures shall be measured within an accuracy of ± 1 K. It shall be guaranteed by appropriate
installation of the temperature probes that on the measuring points the medium caloric temperature of
the water is measured. The time constant for the temperature measurement shall not be larger than 5 s.
4.2.2 Mass and volume flow
The mass and volume flow of the water shall be measured within an accuracy of 1 %.
4.2.3 Time
The time shall be measured within an accuracy of ± 1 s.
4.2.4 Electrical energy
Electrical energy shall be measured with a measurement instrument with a range appropriate to the tank
being assessed, the accuracy shall be 1 %.
4.2.5 Measurement cycle time
The cycle time for the measurement after 5.4 shall not be larger than 10 s.
For all other measurements according to Clause 5 the cycle time should not be larger than 60 s.
4.2.6 Volume
The actual storage volume of the storage tank shall be measured within an accuracy of ± 1 %.
5
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SIST EN 15332:2020/oprA1:2022
EN 15332:2019/prA1:2022 (E)
3 Modifications to Clause 5
Replace 5.1 and 5.2 with the following
5.1 General
The delivered storage tank shall be installed in accordance with the manufacturer's instructions and shall
be tested as produced by the manufacturer.
Modifications may be implemented to adapt the storage tank to the test to be performed according to this
document.
For storage tanks in a product range which have the same constructional design, the testing of only the
smallest and the largest storage tank shall be sufficient, provided the ratio of the nominal volume of the
smallest to largest storage tank is less than or equal to 2:1. If, however, within the same product range,
this ratio is larger than 2: 1, then so many intermediate sizes shall be tested so that the ratio of 2: 1 from
the higher volume size to the lower volume size is not exceeded.
The manufacturer shall ensure that all storage tanks of a product range, even those which have not been
tested, conform to the requirements of this standard. The results of non-tested storage tanks shall be
determined by interpolation based on the nominal volume.
If the models of a range are not using the same insulation, e.g. for the usage of vacuum insulation panels
(VIP) then results of additional simulation tools can be used. The values obtained by the simulations shall
be demonstrated by comparative measurements. The end results shall fulfil the required tolerances (max.
5 %).
NOTE The standing heat loss (S) and the volume (V) as defined below are used to establish the parameters
needed for the eco-design and labelling regulations. For further information see also Annex ZA and ZB.
5.2 Connection of the storage tank
The connection to the heating source is done as indicated in the description by the manufacturer.
Furthermore, for the purposes of testing, if there is no means of heating the lower 15 % of the storage
volume an additional heater shall be fitted in the tank provided for testing. In any case the criteria
T5 ≥ (T4 – 10 K) shall be met; see 5.3.1.
In 5.3.1, replace the key of Figure 1 with the following:
Key
T1, T2, and T3 Ambient temperature around the storage tank
T4 Water temperature sensor at the top of the storage tank
T5 Water temperature sensor at bottom of the storage tank
H Height of the storage tank itself
h Distance given by height of the euro pallet ≥ 144mm
1 Inlet valve (cold water)
2 Outlet valve (hot water)
In 5.3.1, replace all the paragraphs after Figure 1 until Figure 2 with the following:
...
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