HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"L 239/162
EN
Official Journal of the European Union
6.9.2013
COMMISSION REGULATION (EU) No 814/2013
of 2 August 2013
implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to
ecodesign requirements for water heaters and hot water storage tanks
(Text with EEA relevance)
THE EUROPEAN COMMISSION,
and (for heat pump water heaters) sound power levels. In
addition, for water heaters using fossil fuels, emissions of
nitrogen oxides, carbon monoxide and hydrocarbons are
also identified as significant environmental aspects. The
Having regard to the Treaty on the Functioning of the European
significant environmental aspect of hot water storage
Union,
tanks is energy consumption due to their standing losses.
Having regard to Directive 2009/125/EC of the European
Parliament and of the Council of 21 October 2009 establishing
(5) It
is
not
appropriate
to
set
ecodesign
requirements
for
a framework for the setting of ecodesign requirements for
emissions of carbon monoxide and hydrocarbons as no
energy-related products ( 1 ) and in particular Article 15(1)
suitable European measurement methods are as yet
thereof,
available. With a view to developing such measurement
methods, the Commission mandated the European stand
ardisation organisations to consider ecodesign
requirements for those emissions during the review of
After consulting the Ecodesign Consultation Forum,
this Regulation. National provisions for ecodesign
requirements on emissions of carbon monoxides and
hydrocarbons of water heaters may be maintained until
Whereas:
the corresponding Union ecodesign requirements enter
into force. The provisions of Directive 2009/142/EC of
the European Parliament and of the Council of
30 November 2009 relating to appliances burning
(1) Under
Directive
2009/125/EC
ecodesign
requirements
gaseous fuels ( 2 ), which limit the combustion products
should be set by the Commission for energy-related
of appliances burning gaseous fuels in relation to
products representing significant volumes of sales and
health and safety, are not affected.
trade, having a significant environmental impact and
presenting significant potential for improvement
through design in terms of their environmental impact,
without entailing excessive costs.
(6) The
preparatory
study
shows
that
requirements
regarding
the other ecodesign parameters referred to in Annex I,
Part 1 to Directive 2009/125/EC are not necessary in the
(2) Article
16(2)(a)
of
Directive
2009/125/EC
provides
that,
case of water heaters and hot water storage tanks. In
in accordance with the procedure referred to in
particular, greenhouse gas emissions related to refriger
Article 19(3) and the criteria set out in Article 15(2),
ants used in heat pump water heaters for heating today’s
and after consulting the Ecodesign Consultation Forum,
European building stock are not identified as significant.
the Commission should, as appropriate, introduce imple
The appropriateness of setting ecodesign requirements
menting measures for products offering a high potential
for these greenhouse gas emissions will be reassessed
for cost-effective reduction of greenhouse gas emissions,
when reviewing this Regulation.
such as for water heating equipment.
(7) The
scope
of
this
Regulation
should
be
limited
to
water
(3) The
Commission
has
carried
out
a
preparatory
study
on
heaters which are dedicated to providing hot drinking
the technical, environmental and economic aspects of
and sanitary water.
water heaters and hot water storage tanks typically
used in the domestic and commercial sector. The study
was devised together with stakeholders and interested
parties from the Union and third countries, and the
results have been made publicly available.
(8) Water
heaters
that
are
designed
for
using
gaseous
or
liquid fuels predominantly (more than 50 %) produced
from biomass have specific technical characteristics
which require further technical, economic and environ
(4) The
environmental
aspects
of
water
heaters
that
have
mental analyses. Depending on the outcome of the
been identified as significant for the purposes of this
analyses, ecodesign requirements for those water heaters
Regulation are energy consumption in the use phase
should be set at a later stage, if appropriate.
( 1 ) OJ L 285, 31.10.2009, p. 10.
( 2 ) OJ L 330, 16.12.2009, p. 10.

---

EN
6.9.2013 Official
Journal
of
the
European
Union
L
239/163
(9) Annual
energy
consumption
related
to
water
heaters
and (15) Product
parameters
should
be
measured
and
calculated
hot water storage tanks was estimated to have been
using reliable, accurate and reproducible methods which
2 156 PJ (51 Mtoe) in the Union in 2005, corresponding
take into account recognised state-of-the-art measure
to 124 Mt CO 2 emissions. Unless specific measures are
ment and calculation methods, including, where avail
taken, annual energy consumption is expected to be
able, harmonised standards adopted by the European
2 243 PJ in 2020. Annual emissions of nitrogen oxides
standardisation organisations under a request from the
related to water heaters and hot water storage tanks were
Commission, in accordance with the procedures laid
estimated to have been 559 kt SO x equivalent in the
down in the Regulation (EU) No 1025/2012 of the
Union in 2005. Unless specific measures are taken,
European Parliament and of the Council of 25 October
annual emissions are expected to be 603 kt SO x
2012 on European standardisation ( 2 ).
equivalent in 2020. The preparatory study shows that
the use-phase energy consumption and the nitrogen
oxides emissions of water heaters can be significantly
reduced.
(16) In accordance with Article 8(2) of Directive
2009/125/EC, this Regulation specifies which conformity
assessment procedures apply.
(10) The
energy
consumption
of
water
heaters
and
hot
water
storage tanks can be reduced by applying existing cost-
effective non-proprietary technologies which lead to a
reduction in the combined costs of purchasing and
(17) To
facilitate
compliance
checks,
manufacturers
should
operating these products.
provide information in the technical documentation
referred to in Annexes IV and V to Directive
2009/125/EC in so far as that information relates to
the requirements laid down in this Regulation.
(11) The
combined
effect
of
the
ecodesign
requirements
set
out in this Regulation and the Commission Delegated
Regulation (EU) No 812/2013 of 18 February 2013
supplementing Directive 2010/30/EU of the European
Parliament and of the Council with regard to energy
(18) To
further limit the environmental impact of water
labelling of water heaters, hot water storage tanks and
heaters and hot water storage tanks, manufacturers
packages of water heater and solar device (
should provide information on disassembly, recycling

1 ) is expected
to result by 2020 in estimated annual energy savings of
and/or disposal.
about 450 PJ (11 Mtoe), corresponding to around 26 Mt
CO 2 emissions, and a reduction in annual nitrogen
oxides emissions of some 130
kt SO x equivalent,
compared to what would happen if no measures were
(19) In
addition
to
the
legally
binding
requirements
laid
down
taken.
in this Regulation, indicative benchmarks for best
available technologies should be identified to ensure
that information on the life-cycle environmental
performance of water heaters and hot water storage
(12) Ecodesign requirements should harmonise energy
tanks is widely available and easily accessible.
consumption, sound power level and nitrogen oxides
emission requirements for water heaters, and
requirements for standing losses of hot water storage
tanks throughout the Union, thus helping to make the
internal market operate better and to improve the envir
(20) The
measures
provided
for
in
this
Regulation
are
in
onmental performance of these products.
accordance with the opinion of the Committee estab

lished by Article 19(1) of Directive 2009/125/EC,
(13) The
ecodesign
requirements
should
not
affect
the
func
tionality or affordability of water heaters or hot water
HAS ADOPTED THIS REGULATION:
storage tanks from the end-user’s perspective and
should not negatively affect health, safety or the
environment.
Article 1
Subject matter and scope
(14) The ecodesign requirements should be introduced
gradually to give manufacturers a sufficient timeframe
1. This Regulation establishes ecodesign requirements for the
to redesign their products subject to this Regulation.
placing on the market and/or putting into service of water
The timing should be such that cost impact for manu
heaters with a rated heat output ≤ 400 kW and hot water
facturers, in particular for small and medium-sized enter
storage tanks with a storage volume ≤ 2 000 litres, including
prises, is taken into account, while ensuring timely
those integrated in packages of water heater and solar device as
achievement of the objectives of this Regulation.
defined in Article 2 of Delegated Regulation (EU) No 812/2013.
( 1 ) See page 83 of this Official Journal.
( 2 ) OJ L 316, 14.11.2012, p. 12.

---

L 239/164
EN
Official Journal of the European Union
6.9.2013
2. This
Regulation
shall
not
apply
to:
(a) combustion of fossil fuels and/or biomass fuels;
(a) water heaters specifically designed for using gaseous or
(b) use of the Joule effect in electric resistance heating
liquid fuels predominantly produced from biomass;
elements;
(b) water heaters using solid fuels;
(c) capture of ambient heat from an air source, water
source or ground source, and/or waste heat;
(c) water heaters within the scope of Directive 2010/75/EU of
the European Parliament and of the Council ( 1 );
whereby a heat generator designed for a water heater and
a water heater housing to be equipped with such a heat
(d) combination heaters as defined in Article 2 of Commission
generator shall be also considered a water heater;
Regulation (EU) No 813/2013 ( 2 );
(3) ‘water heater housing’ means the part of a water heater
(e) water heaters which do not meet at least the load profile
designed to have a heat generator fitted;
with the smallest reference energy, as specified in Annex III,
Table 1;
(4) ‘rated heat output’ means the declared heat output of the
water heater when providing water heating at standard
(f) water heaters designed for making hot drinks and/or food
rating conditions, expressed in kW;
only;
(g) heat generators designed for water heaters and water heater
(5) ‘storage volume’ (V) means the rated volume of a hot
housings to be equipped with such heat generators placed
water storage tank or a storage water heater, expressed
on the market before 1 January 2018 to replace identical
in litres;
heat generators and identical water heater housings. The
replacement product or its packaging shall clearly indicate
the water heater for which it is intended.
(6) ‘standard rating conditions’ means the operating
conditions of water heaters for establishing the rated
heat output, water heating energy efficiency, sound
Article 2
power level and nitrogen oxide emissions, and of hot
water storage tanks for establishing the standing loss;
Definitions
In addition to the definitions set out in Article 2 of Directive
2009/125/EC, the following definitions shall apply for the
(7) ‘biomass’ means the biodegradable fraction of products,
purposes of this Regulation:
waste and residues from biological origin from agriculture
(including vegetal and animal substances), forestry and
related industries including fisheries and aquaculture, as
(1) ‘water heater’ means a device that
well as the biodegradable fraction of industrial and
municipal waste;
(a) is connected to an external supply of drinking or
sanitary water;
(8) ‘biomass fuel’ means a gaseous or liquid fuel produced
from biomass;
(b) generates and transfers heat to deliver drinking or
sanitary hot water at given temperature levels, quan
(9) ‘fossil fuel’ means a gaseous or liquid fuel of fossil origin;
tities and flow rates during given intervals; and
(c) is equipped with one or more heat generators;
(10) ‘conventional water heater’ means a water heater that
generates heat using the combustion of fossil and/or
biomass fuels and/or the Joule effect in electric resistance
(2) ‘heat generator’ means the part of a water heater that
heating elements;
generates the heat using one or more of the following
processes:
(11) ‘heat pump water heater’ means a water heater using
( 1 ) OJ L 334, 17.12.2010, p. 17.
ambient heat from an air source, water source or
( 2 ) See page 136 of this Official Journal.
ground source, and/or waste heat for heat generation;

---

EN
6.9.2013 Official
Journal
of
the
European
Union
L
239/165
(12) ‘solar water heater’ means a water heater equipped with
(ii) hot water storage tanks shall meet the requirements set
one or more solar collectors, solar hot water storage tanks,
out in Annex II, point 2.2;
heat generators and possibly pumps in the collector loop
and other parts; a solar water heater is placed on the
market as one unit;
(b) from 26 September 2017:
(13) ‘hot water storage tank’ means a vessel for storing hot
water for water and/or space heating purposes, including
(i) water heaters shall meet the requirements set out in
any additives, which is not equipped with any heat
Annex II, point 1.1(b);
generator except possibly one or more back-up
immersion heaters;
(ii) hot water storage tanks shall meet the requirements set
out in Annex II, point 2.1;
(14) ‘back-up immersion heater’ means a Joule effect electric
resistance heater that is part of a hot water storage tank
and generates heat only when the external heat source is
(c) from 26 September 2018:
disrupted (including during maintenance periods) or out of
order, or that is part of a solar hot water storage tank and
provides heat when the solar heat source is not sufficient
to satisfy required comfort levels;
(i) water heaters shall meet the requirements set out in
Annex II, point 1.1(c);
(15) ‘water heating energy efficiency’ (η wh ) means the ratio
between the useful energy provided by a water heater
(ii) water heaters shall meet the requirements set out in
and the energy required for its generation, expressed in %;
Annex II, point 1.5(a).
(16) ‘sound power level’ (L WA ) means the A-weighted sound
3. Compliance with ecodesign requirements shall be
power level, indoors and/or outdoors, expressed in dB;
measured and calculated in accordance with the requirements
set out in Annexes III and IV.
(17) ‘standing loss’ (S) means the heating power dissipated from
a hot water storage tank at given water and ambient
temperatures, expressed in W;
Article 4
Conformity assessment
(18) ‘conversion coefficient’ (CC) means a coefficient reflecting
1. The conformity assessment procedure referred to in
the estimated 40 % average EU generation efficiency
Article 8(2) of Directive 2009/125/EC shall be the internal
referred to in Directive 2012/27/EU of the European
design control set out in Annex IV to that Directive or the
Parliament and of the Council ( 1 ); the value of the
management system set out in Annex V to that Directive.
conversion coefficient is CC = 2,5.
2. For
the
purposes
of
conformity
assessment,
the
technical
For the purposes of Annexes II to VI, additional definitions are
documentation shall contain the product information set out in
set out in Annex I.
point 1.6 of Annex II to this Regulation.
Article 3
Article 5
Ecodesign requirements and timetable
Verification procedure for market surveillance purposes
1. The
ecodesign
requirements
for
water
heaters
and
hot
water storage tanks are set out in Annex II.
When performing the market surveillance checks referred to in
Article 3(2) of Directive 2009/125/EC to ensure compliance
with the requirements set out in Annex II to this Regulation,
2. Each
ecodesign
requirement
shall
apply
in
accordance the Member States’ authorities shall apply the verification
with the following timetable:
procedure set out in Annex V to this Regulation.
(a) from 26 September 2015:
Article 6
Indicative benchmarks
(i) water heaters shall meet the requirements set out in
The indicative benchmarks for best-performing water heaters
Annex II, points 1.1(a), 1.2, 1.3, 1.4 and 1.6;
and hot water storage tanks available on the market at the
time of entry into force of this Regulation are set out in
( 1 ) OJ L 315, 14.11.2012, p. 1.
Annex VI.

---

L 239/166
EN
Official Journal of the European Union
6.9.2013
Article 7
no later than three years from the date of entry into force of
this Regulation. The review shall only include an assessment of
Review
the appropriateness of setting separate ecodesign requirements
1. The
Commission
shall
review
this
Regulation
in
the
light for different types of water heaters.
of technological progress with water heaters and hot water
storage tanks and present the result of that review to the
Article 8
Ecodesign Consultation Forum no later than five years from
the date of entry into force of this Regulation. In particular,
Transitional provisions
the review shall include an assessment of the following aspects:
1. Until
26
September
2015
Member
States
may
allow
the
placing on the market and/or putting into service of water
(a) the appropriateness of setting ecodesign requirements for
heaters which are in conformity with the national provisions
greenhouse gas emissions related to refrigerants;
in force when this Regulation is adopted regarding water
heating energy efficiency and sound power level.
(b) on the basis of the measurement methods under devel
opment, the level of the ecodesign requirements for
emissions of carbon monoxide and hydrocarbons that
2. Until
26
September
2018
Member
States
may
allow
the
may be introduced;
placing on the market and/or putting into service of water
heaters which are in conformity with the national provisions
in force when this Regulation is adopted regarding emissions of
(c) the appropriateness of setting stricter ecodesign
nitrogen oxides.
requirements for emissions of nitrogen oxides;
3. Until
26
September
2017
Member
States
may
allow
the
(d) the appropriateness of setting ecodesign requirements for
placing on the market and/or putting into service of hot water
water heaters specifically designed for using gaseous or
storage tanks, which are in conformity with the national
liquid fuels predominantly produced from biomass;
provisions in force upon adoption of this Regulation
regarding standing losses.
(e) the validity of the conversion coefficient value;
Article 9
(f) the appropriateness of third party certification.
Entry into force
2. The
Commission
shall
also
review
this
Regulation
in
the This Regulation shall enter into force on the twentieth day
light of technological progress with water heaters and present
following that of its publication in the Official Journal of the
the result of that review to the Ecodesign Consultation Forum
European Union.
This Regulation shall be binding in its entirety and directly applicable in all Member States.
Done at Brussels, 2 August 2013.
For the Commission
The President
José Manuel BARROSO

---

EN
6.9.2013 Official
Journal
of
the
European
Union
L
239/167
ANNEX I
Definitions applicable for Annexes II to VI
For the purposes of Annexes II to VI the following definitions shall apply:
(1) ‘storage water heater’ means a water heater equipped with hot water storage tank(s), heat generator(s) and possibly
other parts, which are contained in a single housing;
(2) ‘load profile’ means a given sequence of water draw-offs, as specified in Annex III, Table 1; each water heater meets
at least one load profile;
(3) ‘water draw-off’ means a given combination of useful water flow rate, useful water temperature, useful energy
content and peak temperature, as specified in Annex III, Table 1;
(4) ‘useful water flow rate’ (f) means the minimum flow rate, expressed in litres per minute, for which hot water is
contributing to the reference energy, as specified in Annex III, Table 1;
(5) ‘useful water temperature’ (T m ), means the water temperature, expressed in degrees Celsius, at which hot water starts
contributing to the reference energy, as specified in Annex III, Table 1;
(6) ‘useful energy content’ (Q tap ) means the energy content of hot water, expressed in kWh, provided at a temperature
equal to, or above, the useful water temperature, and at water flow rates equal to, or above, the useful water flow
rate, as specified in Annex III, Table 1;
(7) ‘energy content of hot water’ means the product of the specific heat capacity of water, the average temperature
difference between the hot water output and cold water input, and the total mass of the hot water delivered;
(8) ‘peak temperature’ (T p ) means the minimum water temperature, expressed in degrees Celsius, to be achieved during
water draw-off, as specified in Annex III, Table 1;
(9) ‘reference energy’ (Q ref ) means the sum of the useful energy content of water draw-offs, expressed in kWh, in a
particular load profile, as specified in Annex III, Table 1;
(10) ‘maximum load profile’ means the load profile with the greatest reference energy that a water heater is able to
provide while fulfilling the temperature and flow rate conditions of that load profile;
(11) ‘declared load profile’ means the load profile applied for conformity assessment;
(12) ‘daily electricity consumption’ (Q elec ) means the consumption of electricity over 24 consecutive hours under the
declared load profile, expressed in kWh in terms of final energy;
(13) ‘daily fuel consumption’ (Q fuel ) means the consumption of fuels over 24 consecutive hours under the declared load
profile, expressed in kWh in terms of GCV;
(14) ‘gross calorific value’ (GCV) means the total amount of heat released by a unit quantity of fuel when it is burned
completely with oxygen and when the products of combustion are returned to ambient temperature; this quantity
includes the condensation heat of any water vapour contained in the fuel and of the water vapour formed by the
combustion of any hydrogen contained in the fuel;
(15) ‘smart control’ means a device that automatically adapts the water heating process to individual usage conditions
with the aim of reducing energy consumption;
(16) ‘smart control compliance’ (smart) means the measure of whether a water heater equipped with smart controls fulfils
the criterion set out in point 4 of Annex IV;
(17) ‘smart control factor’ (SCF) means the water heating energy efficiency gain due to smart control under the conditions
set out in point 3 of Annex III;
(18) ‘weekly electricity consumption with smart controls’ (Q elec,week,smart ) means the weekly electricity consumption of a
water heater with the smart control function enabled, measured under the conditions set out in point 3 of Annex III,
expressed in kWh in terms of final energy;

---

L 239/168
EN
Official Journal of the European Union
6.9.2013
(19) ‘weekly fuel consumption with smart controls’ (Q fuel,week,smart ) means the weekly fuel consumption of a water heater
with the smart control function enabled, measured under the conditions set out in point 3 of Annex III, expressed in
kWh in terms of GCV;
(20) ‘weekly electricity consumption without smart controls’ (Q elec,week ) means the weekly electricity consumption of a
water heater with the smart control function disabled, measured under the conditions set out in point 3 of Annex
III, expressed in kWh in terms of final energy;
(21) ‘weekly fuel consumption without smart controls’ (Q fuel,week ) means the weekly fuel consumption of a water heater
with the smart control function disabled, measured under the conditions set out in point 3 of Annex III, expressed
in kWh in terms of GCV;
(22) ‘ambient correction term’ (Q cor ) means a term which takes into account the fact that the place where the water
heater is installed is not an isothermal place, expressed in kWh;
(23) ‘standby heat loss’ (P stby ) means the heat loss of a heat pump water heater in operating modes without heat demand,
expressed in kW;
(24) ‘mixed water at 40 °C’ (V40) means the quantity of water at 40 °C, which has the same heat content (enthalpy) as
the hot water which is delivered above 40 °C at the output of the water heater, expressed in litres;
(25) ‘average climate conditions’ mean the temperature and global solar irradiance conditions characteristic for the city of
Strasbourg;
(26) ‘annual energy consumption’ (Q tota ) means the annual energy consumption of a solar water heater, expressed in kWh
in terms of primary energy and/or kWh in terms of GCV;
(27) ‘annual non-solar heat contribution’ (Q nonsol ) means the annual contribution of electricity (expressed in kWh in terms
of primary energy) and/or fuel (expressed in kWh in terms of GCV) to the useful heat output of a solar water heater,
taking into account the annual amount of heat captured by the solar collector and the heat losses of the solar hot
water storage tank;
(28) ‘solar collector’ means a device designed to absorb global solar irradiance and to transfer the heat energy so
produced to a fluid passing through it; it is characterised by the collector aperture area, the zero-loss efficiency,
the first-order coefficient, the second-order coefficient and the incidence angle modifier;
(29) ‘global solar irradiance’ means the rate of total incoming solar energy, both direct and diffuse, on a collector plane
with an inclination of 45 degrees and southward orientation at the Earth’s surface, expressed in W/m 2 ;
(30) ‘collector aperture area’ (A sol ) means the maximum projected area through which unconcentrated solar radiation
enters the collector, expressed in m 2 ;
(31) ‘zero-loss efficiency’ (η 0 ) means the efficiency of the solar collector, when the solar collector mean fluid temperature
is equal to the ambient temperature;
(32) ‘first-order coefficient’ (a 1 ) means the heat loss coefficient of a solar collector, expressed in W/(m 2 K);
(33) ‘second-order coefficient’ (a 2 ) means the coefficient measuring the temperature dependence of the first-order coef
ficient, expressed in W/(m 2 K 2 );
(34) ‘incidence angle modifier’ (IAM) means the ratio of the useful heat output of a solar collector at a given incidence
angle and its useful heat output at an incidence angle of 0 degrees;
(35) ‘incidence angle’ means the angle between the direction to the sun and the direction perpendicular to the solar
collector aperture;
(36) ‘solar hot water storage tank’ means a hot water storage tank storing heat energy produced by one or more solar
collectors;
(37) ‘heat generator water heating energy efficiency’ (η wh,nonsol ) means the water heating energy efficiency of a heat
generator which is part of a solar water heater, expressed in %, established under average climate conditions and
without using solar heat input;

---

EN
6.9.2013 Official
Journal
of
the
European
Union
L
239/169
(38) ‘auxiliary electricity consumption’ (Q aux ) means the annual electricity consumption of a solar water heater that is due
to the pump power consumption and the standby power consumption, expressed in kWh in terms of final energy;
(39) ‘pump power consumption’ (solpump) means the rated electrical power consumption of the pump in the collector
loop of a solar water heater, expressed in W;
(40) ‘standby power consumption’ (solstandby) means the rated electrical power consumption of a solar water heater when
the pump and the heat generator of a solar water heater are inactive, expressed in W;
(41) ‘equivalent model’ means a model placed on the market with the same technical parameters set out in the applicable
product information requirements of Annex II as another model placed on the market by the same manufacturer.

---

L 239/170
EN
Official Journal of the European Union
6.9.2013
ANNEX II
Ecodesign requirements
1. ECODESIGN
REQUIREMENTS
FOR
WATER
HEATERS
1.1. Requirements for water heating energy efficiency
(a) From 26 September 2015 the water heating energy efficiency of water heaters shall not fall below the following
values:
Declared load profile 3XS XXS XS
S
M
L XL XXL 3XL 4XL
Water heating energy efficiency 22
% 23
% 26
% 26
% 30
% 30
% 30
% 32
% 32
% 32
%
In addition, for water heaters 19 % 20
% 23
% 23
% 27
% 27
% 27
% 28
% 28
% 28
%
with smart being declared as
‘1’: water heating energy effi
ciency calculated for smart = 0,
tested under the declared load
profile
(b) From 26 September 2017 the water heating energy efficiency of water heaters shall not fall below the following
values:
Declared load profile 3XS XXS XS
S
M
L XL XXL 3XL 4XL
Water heating energy efficiency 32
% 32
% 32
% 32
% 36
% 37
% 37
% 37
% 37
% 38
%
In addition, for water heaters 29 % 29
% 29
% 29
% 33
% 34
% 35
% 36
% 36
% 36
%
with smart being declared as
‘1’: water heating energy effi
ciency calculated for smart = 0,
tested under the declared load
profile
(c) From 26 September 2018 the water heating energy efficiency of water heaters shall not fall below the following
values:
Declared load profile XXL 3XL 4XL
Water heating energy
60 % 64
% 64
%
efficiency
1.2. Requirements for storage volume of storage water heaters with declared load profiles 3XS, XXS, XS and S
From 26 September 2015:
(a) for storage water heaters with declared load profile 3XS the storage volume shall not exceed 7 litres;
(b) for storage water heaters with declared load profiles XXS and XS, the storage volume shall not exceed 15 litres;
(c) for storage water heaters with declared load profile S the storage volume shall not exceed 36 litres.

---

EN
6.9.2013 Official
Journal
of
the
European
Union
L
239/171
1.3. Requirements for mixed water at 40 °C of storage water heaters with declared load profiles M, L, XL, XXL,
3XL and 4XL
From 26 September 2015 the amount of mixed water at 40 °C shall not fall below the following values:
Declared load profile
M
L XL XXL 3XL 4XL
Mixed water at 40 °C 65
litres 130
litres 210
litres 300
litres 520
litres 1
040
litres
1.4. Requirements for sound power level
From 26 September 2015 the sound power level of heat pump water heaters shall not exceed the following values:
Rated heat output ≤ 6 kW
Rated heat output > 6 kW and Rated heat output > 12 kW Rated heat output > 30 kW
≤ 12 kW
and ≤ 30 kW
and ≤ 70 kW
Sound power
Sound
Sound
Sound
Sound
Sound
Sound
Sound power
level (L WA ),
power
power level power level
power
power
power
level (L WA ),
indoors
level (L WA ),
(L WA ),
(L WA ),
level (L WA ), level (L WA ), level (L WA ), outdoors
outdoors
indoors
outdoors
indoors
outdoors
indoors
60 dB 65
dB 65
dB 70
dB 70
dB 78
dB 80
dB 88
dB
1.5. Requirements for emissions of nitrogen oxides
(a) From 26 September 2018 emissions of nitrogen oxides, expressed in nitrogen dioxide, of water heaters shall not
exceed the following values:
— conventional water heaters using gaseous fuels: 56 mg/kWh fuel input in terms of GCV,
— conventional water heaters using liquid fuels: 120 mg/kWh fuel input in terms of GCV,
— heat pump water heaters equipped with external combustion using gaseous fuels and solar water heaters
using gaseous fuels: 70 mg/kWh fuel input in terms of GCV,
— heat pump water heaters equipped with external combustion using liquid fuels and solar water heaters using
liquid fuels: 120 mg/kWh fuel input in terms of GCV,
— heat pump water heaters equipped with an internal combustion engine using gaseous fuels: 240 mg/kWh
fuel input in terms of GCV,
— heat pump water heaters equipped with an internal combustion engine using liquid fuels: 420 mg/kWh fuel
input in terms of GCV.
1.6. Requirements for product information related to water heaters
From 26 September 2015 the instruction manuals for installers and end-users, free access websites of manufacturers,
their authorised representatives and importers and technical documentation for the purposes of conformity
assessment pursuant to Article 4 shall contain the following elements:
(a) information identifying the model(s), including equivalent models, to which the information relates;
(b) the results of the measurements for the technical parameters specified in point 6 of Annex III;

---

L 239/172
EN
Official Journal of the European Union
6.9.2013
(c) the results of the calculations for the technical parameters specified in point 2 of Annex IV;
(d) any specific precautions that shall be taken when the water heater is assembled, installed or maintained;
(e) for heat generators designed for water heaters and water heater housings to be equipped with such heat
generators, their characteristics, the requirements for assembly, to ensure compliance with the ecodesign
requirements for water heaters and, where appropriate, the list of combinations recommended by the manu
facturer;
(f) information relevant for disassembly, recycling and/or disposal at end-of-life.
2. ECODESIGN
REQUIREMENTS
FOR
HOT
WATER
STORAGE
TANKS
2.1. Requirement for standing loss
From 26 September 2017 the standing loss S of hot water storage tanks with storage volume V, expressed in litres,
shall not exceed the following limit:
16,66 8,33 V 0,4 Watts
2.2. Requirements for product information related to hot water storage tanks
From 26 September 2015 the instruction manuals for installers and end-users, the free access websites of manu
facturers, their authorised representatives and importers and technical documentation for the purposes of conformity
assessment pursuant to Article 4 shall contain the following elements:
(a) information identifying the model(s), including equivalent models, to which the information relates;
(b) the results of the measurements for the technical parameters specified in point 7 of Annex III;
(c) any specific precautions that shall be taken when the hot water storage tank is assembled, installed or main
tained;
(d) information relevant for disassembly, recycling and/or disposal at end-of-life.

---

EN
6.9.2013 Official
Journal
of
the
European
Union
L
239/173
ANNEX III
Measurements
1. For the purposes of compliance and verification of compliance with the requirements of this Regulation,
measurements shall be made using harmonised standards the reference numbers of which have been published for
this purpose in the Official Journal of the European Union, or using other reliable, accurate and reproducible methods
that take into account the generally recognised state-of-the-art methods. They shall meet the conditions and technical
parameters set out in points 2 to 7.
2. GENERAL CONDITIONS FOR TESTING WATER HEATERS
(a) Measurements shall be carried out using the load profiles set out in Table 1;
(b) measurements shall be carried out using a 24-hour measurement cycle as follows:
— 00:00 to 06:59: no water draw-off,
— from 07:00: water draw-offs according to the declared load profile,
— from end of last water draw-off until 24:00: no water draw-off;
(c) the declared load profile shall be the maximum load profile or the load profile one below the maximum load
profile;
(d) any heat generator designed for a water heater, and any water heater housing to be equipped with such a heat
generator, shall be tested with an appropriate water heater housing and heat generator, respectively;
(e) water heaters to be classified as off-peak water heaters are energised for a maximum period of 8 consecutive hours
between 22:00 and 07:00 of the 24-hour tapping pattern. At the end of the 24-hour tapping pattern the water
heaters are energised till the end of the step.
Table 1
Load profiles of water heaters
3XS XXS XS
S
Q tap
f
T m
Q tap
f
T m
Q tap
f
T m
Q tap
f
T m
T p
h
kWh l/min °C kWh l/min °C kWh l/min °C kWh l/min °C °C
07:00 0,015
2 25 0,105
2 25 0,105
3 25
07:05 0,015
2 25
07:15 0,015
2 25
07:26 0,015
2 25
07:30 0,015
2 25 0,105
2 25 0,525
3 35 0,105
3 25
07:45
08:01
08:05
08:15
08:25
08:30 0,105
2 25 0,105
3 25
08:45
09:00 0,015
2 25
09:30 0,015
2 25 0,105
2 25 0,105
3 25

---

L 239/174
EN
Official Journal of the European Union
6.9.2013
3XS XXS XS
S
Q tap
f
T m
Q tap
f
T m
Q tap
f
T m
Q tap
f
T m
T p
h
kWh l/min °C kWh l/min °C kWh l/min °C kWh l/min °C °C
10:00
10:30
11:00
11:30 0,015
2 25 0,105
2 25 0,105
3 25
11:45 0,015
2 25 0,105
2 25 0,105
3 25
12:00 0,015
2 25 0,105
2 25
12:30 0,015
2 25 0,105
2 25
12:45 0,015
2 25 0,105
2 25 0,525
3 35 0,315
4 10 55
14:30 0,015
2 25
15:00 0,015
2 25
15:30 0,015
2 25
16:00 0,015
2 25
16:30
17:00
18:00 0,105
2 25 0,105
3 25
18:15 0,105
2 25 0,105
3 40
18:30 0,015
2 25 0,105
2 25
19:00 0,015
2 25 0,105
2 25
19:30 0,015
2 25 0,105
2 25
20:00 0,105
2 25
20:30 1,05
3 35 0,42
4 10 55
20:45 0,105
2 25
20:46
21:00 0,105
2 25
21:15 0,015
2 25 0,105
2 25
21:30 0,015
2 25 0,525
5 45
21:35 0,015
2 25 0,105
2 25
21:45 0,015
2 25 0,105
2 25
Q ref
0,345 2,100 2,100 2,100

---

EN
6.9.2013 Official
Journal
of
the
European
Union
L
239/175
M
L XL
Q tap
f
T m
T p
Q tap
f
T m
T p
Q tap
f
T m
T p
h
kWh l/min °C °C kWh l/min °C °C kWh l/min °C °C
07:00 0,105
3 25 0,105
3 25 0,105
3 25
07:05 1,4
6 40 1,4
6 40
07:15 1,82
6 40
07:26 0,105
3 25
07:30 0,105
3 25 0,105
3 25
07:45 0,105
3 25 4,42 10 10 40
08:01 0,105
3 25 0,105
3 25
08:05 3,605 10 10 40
08:15 0,105
3 25 0,105
3 25
08:25 0,105
3 25
08:30 0,105
3 25 0,105
3 25 0,105
3 25
08:45 0,105
3 25 0,105
3 25 0,105
3 25
09:00 0,105
3 25 0,105
3 25 0,105
3 25
09:30 0,105
3 25 0,105
3 25 0,105
3 25
10:00 0,105
3 25
10:30 0,105
3 10 40 0,105
3 10 40 0,105
3 10 40
11:00 0,105
3 25
11:30 0,105
3 25 0,105
3 25 0,105
3 25
11:45 0,105
3 25 0,105
3 25 0,105
3 25
12:00
12:30
12:45 0,315
4 10 55 0,315
4 10 55 0,735
4 10 55
14:30 0,105
3 25 0,105
3 25 0,105
3 25
15:00 0,105
3 25
15:30 0,105
3 25 0,105
3 25 0,105
3 25
16:00 0,105
3 25
16:30 0,105
3 25 0,105
3 25 0,105
3 25
17:00 0,105
3 25
18:00 0,105
3 25 0,105
3 25 0,105
3 25
18:15 0,105
3 40 0,105
3 40 0,105
3 40
18:30 0,105
3 40 0,105
3 40 0,105
3 40

---

L 239/176
EN
Official Journal of the European Union
6.9.2013
M
L XL
Q tap
f
T m
T p
Q tap
f
T m
T p
Q tap
f
T m
T p
h
kWh l/min °C °C kWh l/min °C °C kWh l/min °C °C
19:00 0,105
3 25 0,105
3 25 0,105
3 25
19:30
20:00
20:30 0,735
4 10 55 0,735
4 10 55 0,735
4 10 55
20:45
20:46 4,42 10 10 40
21:00 3,605 10 10 40
21:15 0,105
3 25 0,105
3 25
21:30 1,4
6 40 0,105
3 25 4,42 10 10 40
21:35
21:45
Q ref
5,845 11,655 19,07
XXL 3XL 4XL
Q tap
f
T m
T p
Q tap
f
T m
T p
Q tap
f
T m
T p
h
kWh l/min °C °C kWh l/min °C °C kWh l/min °C °C
07:00 0,105
3 25 11,2 48 40 22,4 96 40
07:05
07:15 1,82
6 40
07:26 0,105
3 25
07:30
07:45 6,24 16 10 40
08:01 0,105
3 25 5,04 24 25 10,08 48 25
08:05
08:15 0,105
3 25
08:25
08:30 0,105
3 25
08:45 0,105
3 25
09:00 0,105
3 25 1,68 24 25 3,36 48 25
09:30 0,105
3 25
10:00 0,105
3 25

---

EN
6.9.2013 Official
Journal
of
the
European
Union
L
239/177
XXL 3XL 4XL
Q tap
f
T m
T p
Q tap
f
T m
T p
Q tap
f
T m
T p
h
kWh l/min °C °C kWh l/min °C °C kWh l/min °C °C
10:30 0,105
3 10 40 0,84 24 10 40 1,68 48 10 40
11:00 0,105
3 25
11:30 0,105
3 25
11:45 0,105
3 25 1,68 24 25 3,36 48 25
12:00
12:30
12:45 0,735
4 10 55 2,52 32 10 55 5,04 64 10 55
14:30 0,105
3 25
15:00 0,105
3 25
15:30 0,105
3 25 2,52 24 25 5,04 48 25
16:00 0,105
3 25
16:30 0,105
3 25
17:00 0,105
3 25
18:00 0,105
3 25
18:15 0,105
3 40
18:30 0,105
3 40 3,36 24 25 6,72 48 25
19:00 0,105
3 25
19:30
20:00
20:30 0,735
4 10 55 5,88 32 10 55 11,76 64 10 55
20:45
20:46 6,24 16 10 40
21:00
21:15 0,105
3 25
21:30 6,24 16 10 40 12,04 48 40 24,08 96 40
21:35
21:45
Q ref
24,53 46,76 93,52

---

L 239/178
EN
Official Journal of the European Union
6.9.2013
3. CONDITIONS FOR TESTING THE SMART CONTROL COMPLIANCE (SMART) OF WATER HEATERS
Where the manufacturer deems it appropriate to declare the value of smart as being ‘1’, measurements of the weekly
electricity and/or fuel consumption with or without smart controls shall be carried out using a two-week measurement
cycle as follows:
— days 1 to 5: random sequence of load profiles chosen from the declared load profile and the load profile one
below the declared load profile, and smart control disabled,
— days 6 and 7: no water draw-offs, and smart control disabled,
— days 8 to 12: repetition of the same sequence applied for days 1 to 5, and smart control enabled,
— days 13 and 14: no water draw-offs, and smart control enabled,
— the difference between the useful energy content measured during days 1 to 7 and the useful energy content
measured during days 8 to 14 shall not exceed 2 % of Q ref of the declared load profile.
4. CONDITIONS FOR TESTING SOLAR WATER HEATERS
The solar collector, solar hot water storage tank, pump in the collector loop (if applicable) and heat generator shall be
tested separately. Where the solar collector and solar hot water storage tank cannot be tested separately, they shall be
tested in combination. The heat generator shall be tested under the conditions set out in point 2 of this Annex.
The results shall be used for the calculations set out in point 3(b) of Annex IV under the conditions set out in Tables 2
and 3. For the purpose of establishing Q tota the efficiency of the heat generator using the Joule effect in electric
resistance heating elements is assumed to be 100/CC.
5. CONDITIONS FOR TESTING HEAT PUMP WATER HEATERS
— Heat pump water heaters shall be tested under the conditions set out in Table 4;
— heat pump water heaters which use ventilation exhaust air as the heat source shall be tested under the conditions
set out in Table 5.
Table 2
Average daytime temperature [°C]
January February March April May June July August September October November December
Average
climate
2,8 2,6 7,4 12,2 16,3 19,8 21,0 22,0 17,0 11,9 5,6 3,2
conditions
Table 3
Average global solar irradiance [W/m 2 ]
January February March April May June July August September October November December
Average
climate
70 104 149 192 221 222 232 217 176 129 80 56
conditions
Table 4
Standard rating conditions for heat pump water heaters, temperatures in dry bulb air temperature (wet bulb air
temperature indicated in brackets)
Heat source Outdoor
air Indoor
air Exhaust
air Brine Water
Temperature
+ 7 °C (+ 6 °C) +
20
°C
+ 20 °C
0 °C (inlet)/
+ 10 °C (inlet)/
(maximum + 15 °C)
(+ 12 °C)
– 3 °C (outlet)
+ 7 °C (outlet)

---

EN
6.9.2013 Official
Journal
of
the
European
Union
L
239/179
Table 5
Maximum ventilation exhaust air available [m 3 /h], at a temperature of 20 °C and with humidity of 5,5 g/m 3
Declared load profile XXS XS
S
M
L XL XXL 3XL 4XL
Maximum ventilation exhaust air
available
109 128 128 159 190 870 1
021 2
943 8
830
6. TECHNICAL PARAMETERS OF WATER HEATERS
The following parameters shall be established for water heaters:
(a) the daily electricity consumption Q elec in kWh, rounded to three decimal places;
(b) the declared load profile, expressed by the appropriate letter in accordance with Table 1 of this Annex;
(c) the sound power level L WA , in dB, indoors, rounded to the nearest integer (for heat pump water heaters, if applicable);
in addition, for water heaters using fossil and/or biomass fuels:
(d) the daily fuel consumption Q fuel in kWh in terms of GCV, rounded to three decimal places;
(e) the emissions of nitrogen oxides, expressed in nitrogen dioxide, in mg/kWh fuel input in terms of GCV, rounded to
the nearest integer;
in addition, for water heaters for which the value of smart is declared as being ‘1’:
(f) the weekly fuel consumption with smart controls Q fuel,week,smart in kWh in terms of GCV, rounded to three decimal
places;
(g) the weekly electricity consumption with smart controls Q elec,week,smart in kWh, rounded to three decimal places;
(h) the weekly fuel consumption without smart controls Q fuel,week in kWh in terms of GCV, rounded to three decimal
places;
(i) the weekly electricity consumption without smart controls Q elec,week in kWh, rounded to three decimal places;
in addition, for storage water heaters with declared load profiles 3XS, XXS and XS:
(j) the storage volume V in litres, rounded to one decimal place;
in addition, for storage water heaters with declared load profiles M, L, XL, XXL, 3XL and 4XL:
(k) the mixed water at 40 °C V40 in litres, rounded to the nearest integer;
in addition, for solar water heaters:
(l) the
collector
aperture
area A sol in m 2 , rounded to two decimal places;
(m) the zero-loss efficiency η 0 , rounded to three decimal places;
(n) the first-order coefficient a 1 in W/(m 2 K), rounded to two decimal places;
(o) the second-order coefficient a 2 in W/(m 2 K 2 ), rounded to three decimal places;
(p) the incidence angle modifier IAM, rounded to two decimal places;
(q) the pump power consumption solpump in W, rounded to two decimal places;
(r) the standby power consumption solstandby in W, rounded to two decimal places;
in addition, for heat pump water heaters:
(s) the sound power level L WA in dB, outdoors, rounded to the nearest integer.
7. TECHNICAL PARAMETERS OF HOT WATER STORAGE TANKS
The following parameters shall be established for hot water storage tanks:
(a) the storage volume V in litres, rounded to one decimal place;
(b) the standing loss S in W, rounded to one decimal place.

---

L 239/180
EN
Official Journal of the European Union
6.9.2013
ANNEX IV
Calculations
1. For the purposes of compliance and verification of compliance with the requirements of this Regulation, calculations
shall be made using harmonised standards the reference numbers of which have been published for this purpose in the
Official Journal of the European Union, or using other appropriate calculation methods that take into account the
generally recognised state-of-the-art methods. They shall meet the technical parameters and calculations set out in
points 2 to 5.
Technical parameters used for the calculations shall be measured in accordance with Annex III.
2. TECHNICAL PARAMETERS OF WATER HEATERS
The following parameters shall be calculated for water heaters under average climate conditions:
(a) the water heating energy efficiency η wh in %, rounded to one decimal place;
in addition, for solar water heaters under average climate conditions:
(b) the annual non-solar heat contribution Q nonsol in kWh in terms of primary energy for electricity and/or in kWh in
terms of GCV for fuels, rounded to one decimal place;
(c) the heat generator water heating energy efficiency η wh,nonsol in %, rounded to one decimal place;
(d) the annual auxiliary electricity consumption Q aux in kWh, rounded to one decimal place.
3. CALCULATION OF THE WATER HEATING ENERGY EFFICIENCY η wh
(a) Conventional water heaters and heat pump water heaters
The water heating energy efficiency is calculated as follows:
Q
η
ref

wh

Q fuel CC Q elec 1 SCF smart Q cor
For water-/brine-to-water heat pump water heaters, the electricity consumption of one or more ground water
pumps shall be taken into account.
(b) Solar water heaters
The water heating energy efficiency is calculated as follows:
0,6 366 Q
η
ref

wh
Q tota
Where:
Q
Q

nonsol

tota 1,1 η wh;nonsol 0,1 Q aux CC

---

EN
6.9.2013 Official
Journal
of
the
European
Union
L
239/181
4. DETERMINATION OF THE SMART CONTROL FACTOR SCF AND OF SMART CONTROL COMPLIANCE smart
(a) The smart control factor is calculated as follows:
Q
SCF
fuel
1 ;week;smart CC Q elec;week;smart
Q fuel;week CC Q elec;week
(b) If SCF ≥ 0,07, the value of smart shall be 1. In all other cases, the value of smart shall be 0.
5. DETERMINATION OF THE AMBIENT CORRECTION TERM Q cor
The ambient correction term is calculated as follows:
(a) for conventional water heaters using electricity:
Q cor k CC Q elec 1 SCF smart Q ref
(b) for conventional water heaters using fuels:
Q cor k Q fuel 1 SCF smart Q ref
(c) for heat pump water heaters:
Q cor k 24h P stby
Where:
the k-values are given in Table 6 for each load profile.
Table 6
k-values
3XS XXS XS
S
M
L XL XXL 3XL 4XL
k 0,23 0,23 0,23 0,23 0,23 0,23 0,23 0,0 0,0 0,0

---

L 239/182
EN
Official Journal of the European Union
6.9.2013
ANNEX V
Verification procedure for market surveillance purposes
For the purposes of checking conformity with the requirements laid down in Annex II, Member State authorities shall test
a single water heater or hot water storage tank. The values declared by the manufacturer shall meet the requirements set
out in Annex II. If the measured parameters do not meet the values declared by the manufacturer, in accordance with
Article 4(2), within the ranges set out in Table 7, the measurement shall be carried out on three additional water heaters
or hot water storage tanks. The arithmetic mean of the measured values of these three water heaters or hot water storage
tanks shall meet the requirements laid down in Annex II within the ranges set out in Table 7.
Otherwise, the model and all other equivalent water heater models or hot water storage tanks models shall be considered
not to comply. The Member States authorities shall provide the test results and other relevant information to the
authorities of the other Member States and to the Commission within one month of the decision being taken on the
non-compliance of the model.
Member State authorities shall use the procedures set out in Annexes III and IV.
Table 7
Verification tolerances
Measured parameter Verification
tolerance
Daily electricity consumption Q elec
The measured value shall not be more than 5 % higher
than the rated value (*).
Sound power level L WA , indoors and/or outdoors The
measured
value
shall
not
be
more
than
2
dB
higher
than the rated value.
Daily fuel consumption Q fuel
The measured value shall not be more than 5 % higher
than the rated value.
Emissions of nitrogen oxides The
measured
value
shall
not
be
more
than
20
%
higher
than the rated value.
Weekly fuel consumption with smart controls Q fuel,week,smart The measured value shall not be more than 5 % higher
than the rated value.
Weekly fuel consumption without smart controls Q fuel,week The measured value shall not be more than 5 % higher
than the rated value.
Weekly electricity consumption with smart controls The measured value shall not be more than 5 % higher
Q elec,week,smart
than the rated value.
Weekly electricity consumption without smart controls The measured value shall not be more than 5 % higher
Q elec,week
than the rated value.
Storage volume V The
measured
value
shall
not
be
more
than
2
%
lower
than
the rated value.
Mixed water at 40 °C V40 The
measured
value
shall
not
be
more
than
3
%
lower
than
the rated value.
Collector aperture area A sol
The measured value shall not be more than 2 % lower than
the rated value.
Pump power consumption solpump The
measured
value
shall
not
be
more
than
3
%
higher
than the rated value.
Standby power consumption solstandby The
measured
value
shall
not
be
more
than
5
%
higher
than the rated value.
Standing loss S The
measured
value
shall
not
be
more
than
5
%
higher
than the rated value.
(*) ‘Rated value’ means the value declared by the manufacturer.

---

EN
6.9.2013 Official
Journal
of
the
European
Union
L
239/183
ANNEX VI
Indicative benchmarks referred to in Article 6
At the time of entry into force of this Regulation, the best available technology on the market for water heaters and hot
water storage tanks in terms of water heating energy efficiency, sound power level, standing loss and emissions of
nitrogen oxides was identified as follows:
1. BENCHMARKS FOR WATER HEATING ENERGY EFFICIENCY OF WATER HEATERS:
Declared load profile
3XS XXS XS
S
M
L XL XXL 3XL 4XL
Water heating energy
efficiency
35 % 35
% 38
% 38
% 75
% 110
% 115
% 120
% 130
% 130
%
2. BENCHMARKS FOR SOUND POWER LEVEL (L WA ), OUTDOORS, OF HEAT PUMP WATER HEATERS WITH:
(a) rated heat output ≤ 6 kW: 39 dB;
(b) rated heat output > 6 kW and ≤ 12 kW: 40 dB;
(c) rated heat output > 12 kW and ≤ 30 kW: 41 dB;
(d) rated heat output > 30 kW and ≤ 70 kW: 67 dB.
3. BENCHMARK FOR STANDING LOSS OF HOT WATER STORAGE TANKS WITH STORAGE VOLUME V, EXPRESSED
IN LITRES:
5 4,16 V 0,4 Watts
4. BENCHMARK FOR EMISSIONS OF NITROGEN OXIDES, EXPRESSED IN NITROGEN OXIDE, OF CONVENTIONAL
WATER HEATERS USING GASEOUS FUELS:
35 mg/kWh fuel input in terms of GCV
The benchmarks specified in points 1, 2 and 4 do not necessarily imply that a combination of these values is achievable
for a single water heater.

---

Document Outline

• �

---