# Commission Regulation (EU) No 814/2013Show full title

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)         

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# 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,

Having regard to the Treaty on the Functioning of the European Union,

Having regard to Directive 2009/125/EC of the European Parliament and of the Council of 21 October 2009 establishing a framework                           for the setting of ecodesign requirements for energy-related products(1) and in particular Article 15(1) thereof,                        

After consulting the Ecodesign Consultation Forum,

Whereas:

(1)Under Directive 2009/125/EC ecodesign requirements should be set by the Commission for energy-related products representing                              significant volumes of sales and trade, having a significant environmental impact and presenting significant potential for                              improvement through design in terms of their environmental impact, without entailing excessive costs.

(2)Article 16(2)(a) of Directive 2009/125/EC provides that, in accordance with the procedure referred to in Article 19(3) and                              the criteria set out in Article 15(2), and after consulting the Ecodesign Consultation Forum, the Commission should, as appropriate,                              introduce implementing measures for products offering a high potential for cost-effective reduction of greenhouse gas emissions,                              such as for water heating equipment.

(3)The Commission has carried out a preparatory study on the technical, environmental and economic aspects of 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.

(4)The environmental aspects of water heaters that have been identified as significant for the purposes of this Regulation are                              energy consumption in the use phase 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 significant environmental aspect of hot water storage tanks is energy consumption due to their standing losses.

(5)It is not appropriate to set ecodesign requirements for emissions of carbon monoxide and hydrocarbons as no suitable European                              measurement methods are as yet available. With a view to developing such measurement methods, the Commission mandated the                              European standardisation organisations to consider ecodesign requirements for those emissions during the review of this Regulation.                              National provisions for ecodesign requirements on emissions of carbon monoxides and hydrocarbons of water heaters may be maintained                              until 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 gaseous fuels(2), which limit the combustion products of appliances burning gaseous fuels in relation to health and safety, are not affected.

(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 case of water heaters and hot water storage tanks. In particular, greenhouse gas emissions                              related to refrigerants used in heat pump water heaters for heating today’s European building stock are not identified as                              significant. The appropriateness of setting ecodesign requirements for these greenhouse gas emissions will be reassessed when                              reviewing this Regulation.

(7)The scope of this Regulation should be limited to water heaters which are dedicated to providing hot drinking and sanitary                              water.

(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 environmental analyses. Depending on the                              outcome of the analyses, ecodesign requirements for those water heaters should be set at a later stage, if appropriate.

(9)Annual energy consumption related to water heaters and hot water storage tanks was estimated to have been 2 156 PJ (51 Mtoe)                              in the Union in 2005, corresponding to 124 Mt CO2 emissions. Unless specific measures are taken, annual energy consumption is expected to be 2 243 PJ in 2020. Annual emissions                              of nitrogen oxides related to water heaters and hot water storage tanks were estimated to have been 559 kt SOx equivalent in the Union in 2005. Unless specific measures are taken, annual emissions are expected to be 603 kt SOx 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.

(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 operating these products.

(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 labelling of water heaters, hot water storage tanks and packages of water heater and solar device(3) is expected to result by 2020 in estimated annual energy savings of about 450 PJ (11 Mtoe), corresponding to around 26 Mt                              CO2 emissions, and a reduction in annual nitrogen oxides emissions of some 130 kt SOx equivalent, compared to what would happen if no measures were taken.

(12)Ecodesign requirements should harmonise energy 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 environmental performance of these products.

(13)The ecodesign requirements should not affect the functionality or affordability of water heaters or hot water storage tanks                              from the end-user’s perspective and should not negatively affect health, safety or the environment.

(14)The ecodesign requirements should be introduced gradually to give manufacturers a sufficient timeframe to redesign their products                              subject to this Regulation. The timing should be such that cost impact for manufacturers, in particular for small and medium-sized                              enterprises, is taken into account, while ensuring timely achievement of the objectives of this Regulation.

(15)Product parameters should be measured and calculated using reliable, accurate and reproducible methods which take into account                              recognised state-of-the-art measurement and calculation methods, including, where available, harmonised standards adopted                              by the European standardisation organisations under a request from the Commission, in accordance with the procedures laid                              down in the Regulation (EU) No 1025/2012 of the European Parliament and of the Council of 25 October 2012 on European standardisation(4).

(16)In accordance with Article 8(2) of Directive 2009/125/EC, this Regulation specifies which conformity assessment procedures                              apply.

(17)To facilitate compliance checks, manufacturers should 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.

(18)To further limit the environmental impact of water heaters and hot water storage tanks, manufacturers should provide information                              on disassembly, recycling and/or disposal.

(19)In addition to the legally binding requirements laid down 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 tanks is widely available and easily accessible.

(20)The measures provided for in this Regulation are in accordance with the opinion of the Committee established by Article 19(1)                              of Directive 2009/125/EC,

HAS ADOPTED THIS REGULATION:

## Article 1U.K.Subject matter and scope

1.This Regulation establishes ecodesign requirements for the placing on the market and/or putting into service of water heaters                        with a rated heat output ≤ 400 kW and hot water storage tanks with a storage volume ≤ 2 000 litres, including those integrated                        in packages of water heater and solar device as defined in Article 2 of Delegated Regulation (EU) No 812/2013.                  

2.This Regulation shall not apply to:                  

(a)water heaters specifically designed for using gaseous or liquid fuels predominantly produced from biomass;                  

(b)water heaters using solid fuels;                  

(c)water heaters within the scope of Directive 2010/75/EU of the European Parliament and of the Council(5);                  

(d)combination heaters as defined in Article 2 of Commission Regulation (EU) No 813/2013(6);                  

(e)water heaters which do not meet at least the load profile with the smallest reference energy, as specified in Annex III, Table                        1;                  

(f)water heaters designed for making hot drinks and/or food only;                  

(g)heat generators designed for water heaters and water heater housings to be equipped with such heat generators placed on the                        market before 1 January 2018 to replace identical heat generators and identical water heater housings. The replacement product                        or its packaging shall clearly indicate the water heater for which it is intended.                  

## Article 2U.K.Definitions

In addition to the definitions set out in Article 2 of Directive 2009/125/EC, the following definitions shall apply for the                     purposes of this Regulation:                  

‘water heater’ means a device that

is connected to an external supply of drinking or sanitary water;

generates and transfers heat to deliver drinking or sanitary hot water at given temperature levels, quantities and flow rates                                       during given intervals; and                                    

is equipped with one or more heat generators;

‘heat generator’ means the part of a water heater that generates the heat using one or more of the following processes:

combustion of fossil fuels and/or biomass fuels;

use of the Joule effect in electric resistance heating elements;

capture of ambient heat from an air source, water source or ground source, and/or waste heat;

whereby a heat generator designed for a water heater and a water heater housing to be equipped with such a heat generator                              shall be also considered a water heater;                           

‘water heater housing’ means the part of a water heater designed to have a heat generator fitted;

‘rated heat output’ means the declared heat output of the water heater when providing water heating at standard rating conditions,                              expressed in kW;                           

‘storage volume’ (*V*) means the rated volume of a hot water storage tank or a storage water heater, expressed in litres;                           

‘standard rating conditions’ means the operating conditions of water heaters for establishing the rated heat output, water                              heating energy efficiency, sound power level and nitrogen oxide emissions, and of hot water storage tanks for establishing                              the standing loss;                           

‘biomass’ means the biodegradable fraction of products, waste and residues from biological origin from agriculture (including                              vegetal and animal substances), forestry and related industries including fisheries and aquaculture, as well as the biodegradable                              fraction of industrial and municipal waste;                           

‘biomass fuel’ means a gaseous or liquid fuel produced from biomass;

‘fossil fuel’ means a gaseous or liquid fuel of fossil origin;

‘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 heating elements;                           

‘heat pump water heater’ means a water heater using ambient heat from an air source, water source or ground source, and/or                              waste heat for heat generation;                           

‘solar water heater’ means a water heater equipped with one or more solar collectors, solar hot water storage tanks, heat                              generators and possibly pumps in the collector loop and other parts; a solar water heater is placed on the market as one unit;                           

‘hot water storage tank’ means a vessel for storing hot water for water and/or space heating purposes, including any additives,                              which is not equipped with any heat generator except possibly one or more back-up immersion heaters;                           

‘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 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;                           

‘water heating energy efficiency’ (*ηwh*) means the ratio between the useful energy provided by a water heater and the energy required for its generation, expressed                              in %;                           

‘sound power level’ (*LWA*) means the A-weighted sound power level, indoors and/or outdoors, expressed in dB;                           

‘standing loss’ (*S*) means the heating power dissipated from a hot water storage tank at given water and ambient temperatures, expressed in W;                           

‘conversion coefficient’ (*CC*) means a coefficient reflecting the estimated 40 % average EU generation efficiency referred to in Directive 2012/27/EU of                              the European Parliament and of the Council(7); the value of the conversion coefficient is *CC* = 2,5.                           

For the purposes of Annexes II to VI, additional definitions are set out in Annex I.

## Article 3U.K.Ecodesign requirements and timetable

1.The ecodesign requirements for water heaters and hot water storage tanks are set out in Annex II.                  

2.Each ecodesign requirement shall apply in accordance with the following timetable:                  

(a)from 26 September 2015:                  

water heaters shall meet the requirements set out in Annex II, points 1.1(a), 1.2, 1.3, 1.4 and 1.6;

hot water storage tanks shall meet the requirements set out in Annex II, point 2.2;

(b)from 26 September 2017:                  

water heaters shall meet the requirements set out in Annex II, point 1.1(b);

hot water storage tanks shall meet the requirements set out in Annex II, point 2.1;

(c)from 26 September 2018:                  

water heaters shall meet the requirements set out in Annex II, point 1.1(c);

water heaters shall meet the requirements set out in Annex II, point 1.5(a).

3.Compliance with ecodesign requirements shall be measured and calculated in accordance with the requirements set out in Annexes                        III and IV.                  

## Article 4U.K.Conformity assessment

1.The conformity assessment procedure referred to in Article 8(2) of Directive 2009/125/EC shall be the internal design control                        set out in Annex IV to that Directive or the management system set out in Annex V to that Directive.                  

2.For the purposes of conformity assessment, the technical documentation shall contain the product information set out in point                        1.6 of Annex II to this Regulation.                  

## Article 5U.K.Verification procedure for market surveillance purposes

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, the Member States’ authorities shall apply the verification procedure                     set out in Annex V to this Regulation.                  

## Article 6U.K.Indicative benchmarks

The indicative benchmarks for best-performing water heaters and hot water storage tanks available on the market at the time                     of entry into force of this Regulation are set out in Annex VI.                  

## Article 7U.K.Review

1.The Commission shall review this Regulation in the light of technological progress with water heaters and hot water storage                        tanks and present the result of that review to the Ecodesign Consultation Forum no later than five years from the date of                        entry into force of this Regulation. In particular, the review shall include an assessment of the following aspects:                  

(a)the appropriateness of setting ecodesign requirements for greenhouse gas emissions related to refrigerants;                  

(b)on the basis of the measurement methods under development, the level of the ecodesign requirements for emissions of carbon                        monoxide and hydrocarbons that may be introduced;                  

(c)the appropriateness of setting stricter ecodesign requirements for emissions of nitrogen oxides;                  

(d)the appropriateness of setting ecodesign requirements for water heaters specifically designed for using gaseous or liquid                        fuels predominantly produced from biomass;                  

(e)the validity of the conversion coefficient value;                  

(f)the appropriateness of third party certification.                  

2.The Commission shall also review this Regulation in the light of technological progress with water heaters and present the                        result of that review to the Ecodesign Consultation Forum no later than three years from the date of entry into force of this                        Regulation. The review shall only include an assessment of the appropriateness of setting separate ecodesign requirements                        for different types of water heaters.                  

## Article 8U.K.Transitional provisions

1.Until 26 September 2015 Member States may allow the 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 water heating energy efficiency                        and sound power level.                  

2.Until 26 September 2018 Member States may allow the 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 nitrogen oxides.                  

3.Until 26 September 2017 Member States may allow the placing on the market and/or putting into service of hot water storage                        tanks, which are in conformity with the national provisions in force upon adoption of this Regulation regarding standing losses.                  

## Article 9U.K.Entry into force

This Regulation shall enter into force on the twentieth day following that of its publication in the *Official Journal of the 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                            

## ANNEX IU.K.**Definitions applicable for Annexes II to VI**

For the purposes of Annexes II to VI the following definitions shall apply:

‘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;                           

‘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;                           

‘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;                           

‘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;                           

‘useful water temperature’ (*Tm*), 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;                           

‘useful energy content’ (*Qtap*) 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;                           

‘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;                           

‘peak temperature’ (*Tp*) means the minimum water temperature, expressed in degrees Celsius, to be achieved during water draw-off, as specified in                              Annex III, Table 1;                           

‘reference energy’ (*Qref*) 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;                           

‘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;                           

‘declared load profile’ means the load profile applied for conformity assessment;

‘daily electricity consumption’ (*Qelec*) means the consumption of electricity over 24 consecutive hours under the declared load profile, expressed in kWh in terms                              of final energy;                           

‘daily fuel consumption’ (*Qfuel*) means the consumption of fuels over 24 consecutive hours under the declared load profile, expressed in kWh in terms of *GCV*;                           

‘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;                           

‘smart control’ means a device that automatically adapts the water heating process to individual usage conditions with the                              aim of reducing energy consumption;                           

‘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;                           

‘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;                           

‘weekly electricity consumption with smart controls’ (*Qelec,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;                           

‘weekly fuel consumption with smart controls’ (*Qfuel,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*;                           

‘weekly electricity consumption without smart controls’ (*Qelec,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;                           

‘weekly fuel consumption without smart controls’ (*Qfuel,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*;                           

‘ambient correction term’ (*Qcor*) 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;                           

‘standby heat loss’ (*Pstby*) means the heat loss of a heat pump water heater in operating modes without heat demand, expressed in kW;                           

‘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;                           

‘average climate conditions’ mean the temperature and global solar irradiance conditions characteristic for the city of Strasbourg;

‘annual energy consumption’ (*Qtota*) 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*;                           

‘annual non-solar heat contribution’ (*Qnonsol*) 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;                           

‘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;                           

‘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/m2;                           

‘collector aperture area’ (*Asol*) means the maximum projected area through which unconcentrated solar radiation enters the collector, expressed in m2;                           

‘zero-loss efficiency’ (*η0*) means the efficiency of the solar collector, when the solar collector mean fluid temperature is equal to the ambient temperature;                           

‘first-order coefficient’ (*a1*) means the heat loss coefficient of a solar collector, expressed in W/(m2 K);                           

‘second-order coefficient’ (*a2*) means the coefficient measuring the temperature dependence of the first-order coefficient, expressed in W/(m2 K2);                           

‘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;                           

‘incidence angle’ means the angle between the direction to the sun and the direction perpendicular to the solar collector                              aperture;                           

‘solar hot water storage tank’ means a hot water storage tank storing heat energy produced by one or more solar collectors;

‘heat generator water heating energy efficiency’ (*ηwh,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;                           

‘auxiliary electricity consumption’ (*Qaux*) 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;                           

‘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;                           

‘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;                           

‘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.                           

## ANNEX IIU.K.Ecodesign requirements

### 1.ECODESIGN REQUIREMENTS FOR WATER HEATERSU.K.

#### 1.1.**Requirements for water heating energy efficiency**U.K.

##### (a)From 26 September 2015 the water heating energy efficiency of water heaters shall not fall below the following values:U.K.

##### (b)From 26 September 2017 the water heating energy efficiency of water heaters shall not fall below the following values:U.K.

##### (c)From 26 September 2018 the water heating energy efficiency of water heaters shall not fall below the following values:U.K.

#### 1.2.**Requirements for storage volume of storage water heaters with declared load profiles 3XS, XXS, XS and S**U.K.

From 26 September 2015:

for storage water heaters with declared load profile 3XS the storage volume shall not exceed 7 litres;

for storage water heaters with declared load profiles XXS and XS, the storage volume shall not exceed 15 litres;

for storage water heaters with declared load profile S the storage volume shall not exceed 36 litres.

#### 1.3.**Requirements for mixed water at 40 °C of storage water heaters with declared load profiles M, L, XL, XXL, 3XL and 4XL**U.K.

From 26 September 2015 the amount of mixed water at 40 °C shall not fall below the following values:

#### 1.4.**Requirements for sound power level**U.K.

From 26 September 2015 the sound power level of heat pump water heaters shall not exceed the following values:

#### 1.5.**Requirements for emissions of nitrogen oxides**U.K.

##### (a)From 26 September 2018 emissions of nitrogen oxides, expressed in nitrogen dioxide, of water heaters shall not exceed the                        following values:U.K.

          -  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**U.K.

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:                  

information identifying the model(s), including equivalent models, to which the information relates;

the results of the measurements for the technical parameters specified in point 6 of Annex III;

the results of the calculations for the technical parameters specified in point 2 of Annex IV;

any specific precautions that shall be taken when the water heater is assembled, installed or maintained;

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 manufacturer;                           

information relevant for disassembly, recycling and/or disposal at end-of-life.

### 2.ECODESIGN REQUIREMENTS FOR HOT WATER STORAGE TANKSU.K.

#### 2.1.**Requirement for standing loss**U.K.

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:                  

#### 2.2.**Requirements for product information related to hot water storage tanks**U.K.

From 26 September 2015 the instruction manuals for installers and end-users, the 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:                  

information identifying the model(s), including equivalent models, to which the information relates;

the results of the measurements for the technical parameters specified in point 7 of Annex III;

any specific precautions that shall be taken when the hot water storage tank is assembled, installed or maintained;

information relevant for disassembly, recycling and/or disposal at end-of-life.

## ANNEX IIIU.K.**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.U.K.

### 2.GENERAL CONDITIONS FOR TESTING WATER HEATERSU.K.

#### (a)Measurements shall be carried out using the load profiles set out in Table 1;U.K.

#### (b)measurements shall be carried out using a 24-hour measurement cycle as follows:U.K.

          -  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;U.K.

#### (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;U.K.

#### (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.U.K.

##### *Table 1*

**Load profiles of water heaters**

### 3.CONDITIONS FOR TESTING THE SMART CONTROL COMPLIANCE (*SMART*) OF WATER HEATERSU.K.

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 *Qref* of the declared load profile.                         

### 4.CONDITIONS FOR TESTING SOLAR WATER HEATERSU.K.

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 *Qtota* 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 HEATERSU.K.

          -  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]**

#### *Table 3*

**Average global solar irradiance [W/m2]**

#### *Table 4*

**Standard rating conditions for heat pump water heaters, temperatures in dry bulb air temperature (wet bulb air temperature                           indicated in brackets)**

#### *Table 5*

**Maximum ventilation exhaust air available [m3/h], at a temperature of 20 °C and with humidity of 5,5 g/m3**

### 6.TECHNICAL PARAMETERS OF WATER HEATERSU.K.

The following parameters shall be established for water heaters:

the daily electricity consumption *Qelec* in kWh, rounded to three decimal places;                           

the declared load profile, expressed by the appropriate letter in accordance with Table 1 of this Annex;

the sound power level *LWA*, 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:

the daily fuel consumption *Qfuel* in kWh in terms of *GCV*, rounded to three decimal places;                           

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’:                  

the weekly fuel consumption with smart controls *Qfuel,week,smart* in kWh in terms of *GCV*, rounded to three decimal places;                           

the weekly electricity consumption with smart controls *Qelec,week,smart* in kWh, rounded to three decimal places;                           

the weekly fuel consumption without smart controls *Qfuel,week* in kWh in terms of *GCV*, rounded to three decimal places;                           

the weekly electricity consumption without smart controls *Qelec,week* in kWh, rounded to three decimal places;                           

in addition, for storage water heaters with declared load profiles 3XS, XXS and XS:

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:

the mixed water at 40 °C *V40* in litres, rounded to the nearest integer;                           

in addition, for solar water heaters:

the collector aperture area *Asol* in m2, rounded to two decimal places;                           

the zero-loss efficiency *η0*, rounded to three decimal places;                           

the first-order coefficient *a1* in W/(m2 K), rounded to two decimal places;                           

the second-order coefficient *a2* in W/(m2 K2), rounded to three decimal places;                           

the incidence angle modifier *IAM*, rounded to two decimal places;                           

the pump power consumption *solpump* in W, rounded to two decimal places;                           

the standby power consumption *solstandby* in W, rounded to two decimal places;                           

in addition, for heat pump water heaters:

the sound power level *LWA* in dB, outdoors, rounded to the nearest integer.                           

### 7.TECHNICAL PARAMETERS OF HOT WATER STORAGE TANKSU.K.

The following parameters shall be established for hot water storage tanks:

the storage volume *V* in litres, rounded to one decimal place;                           

the standing loss *S* in W, rounded to one decimal place.                           

## ANNEX IVU.K.**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.U.K.

Technical parameters used for the calculations shall be measured in accordance with Annex III.

### 2.TECHNICAL PARAMETERS OF WATER HEATERSU.K.

The following parameters shall be calculated for water heaters under average climate conditions:

the water heating energy efficiency *ηwh* in %, rounded to one decimal place;                           

in addition, for solar water heaters under average climate conditions:

the annual non-solar heat contribution *Qnonsol* in kWh in terms of primary energy for electricity and/or in kWh in terms of *GCV* for fuels, rounded to one decimal place;                           

the heat generator water heating energy efficiency *ηwh,nonsol* in %, rounded to one decimal place;                           

the annual auxiliary electricity consumption *Qaux* in kWh, rounded to one decimal place.                           

### 3.CALCULATION OF THE WATER HEATING ENERGY EFFICIENCY *ηwh*U.K.

#### (a)Conventional water heaters and heat pump water heatersU.K.

The water heating energy efficiency is calculated as follows:

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 heatersU.K.

The water heating energy efficiency is calculated as follows:

Where:

### 4.DETERMINATION OF THE SMART CONTROL FACTOR *SCF* AND OF SMART CONTROL COMPLIANCE *smart*U.K.

#### (a)The smart control factor is calculated as follows:U.K.

#### (b)If SCF ≥ 0,07, the value of smart shall be 1. In all other cases, the value of smart shall be 0.U.K.

### 5.DETERMINATION OF THE AMBIENT CORRECTION TERM *Qcor*U.K.

The ambient correction term is calculated as follows:

for conventional water heaters using electricity:

for conventional water heaters using fuels:

for heat pump water heaters:

Where:

the k-values are given in Table 6 for each load profile.

#### *Table 6*

**k-values**

## ANNEX VU.K.**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**

## ANNEX VIU.K.**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:                  

BENCHMARKS FOR WATER HEATING ENERGY EFFICIENCY OF WATER HEATERS:

BENCHMARKS FOR SOUND POWER LEVEL (*LWA*), OUTDOORS, OF HEAT PUMP WATER HEATERS WITH:                           

rated heat output ≤ 6 kW: 39 dB;

rated heat output > 6 kW and ≤ 12 kW: 40 dB;

rated heat output > 12 kW and ≤ 30 kW: 41 dB;

rated heat output > 30 kW and ≤ 70 kW: 67 dB.

BENCHMARK FOR STANDING LOSS OF HOT WATER STORAGE TANKS WITH STORAGE VOLUME *V*, EXPRESSED IN LITRES:                           

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.                  

1

OJ L 285, 31.10.2009, p. 10.                           

2

OJ L 330, 16.12.2009, p. 10.                           

3

See page 83 of this Official Journal.

4

OJ L 316, 14.11.2012, p. 12.                           

5

OJ L 334, 17.12.2010, p. 17.                           

6

See page 136 of this Official Journal.

7

OJ L 315, 14.11.2012, p. 1.