MULTI-ENERGY SYSTEMS - Certita Eurovent · EUROVENT CERTITA CERTIFICATION (ECC), as an accredited...

S06 D06 Technical standard template NF rev0 draft v2

Certification body mandated by AFNOR Certification

48/50 rue de la Victoire 75009 PARIS Telephone: +33 (0) 1 75 44 71 71 www.eurovent-certification.com/www.certita.fr

TECHNICAL STANDARD

AFNOR Certification identification no.: NF 462

Revision 2 – January 2018 (This version cancels and replaces any previous versions)

Approved by AFNOR Certification: 17/01/2018

Date of 1st application: 25/10/2013

MULTI-ENERGY SYSTEMS

Certification technical standard NF 462 Revision 2 – January 2018 Multi-energy Systems NF Mark

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S06 D06 Technical standard template NF rev0 draft v2

This certification technical standard was submitted to AFNOR Certification for acceptance into the NF certification system. It was approved by the legal representative of AFNOR Certification on 17/01/2018.

It cancels and replaces any previous versions.

EUROVENT CERTITA CERTIFICATION (ECC), as an accredited certification body1, undertakes to draw up certification technical standards that guarantee an appropriate level of requirements for the quality, fitness for purpose and durability of the products. The accreditation is evidence of the independence and impartiality of EUROVENT CERTITA CERTIFICATION and its technical ability to develop the NF mark.

The certification technical standard can be revised, in part or in full, by EUROVENT CERTITA CERTIFICATION after referring to the interested parties. The revision is approved by the legal representative of AFNOR Certification for acceptance into the NF certification system.

This certification technical standard must be used jointly with the current version of the general standard for NF programmes managed by ECC. Therefore, the requirements of the general standard for NF programmes managed by ECC should be read because these standards are inseparable from one another.

HISTORY OF CHANGES

First date of application of the certification reference standard: 25/10/2013

Part modified

Revision no.

Date of application

Change made

- 0 25/10/2013 Creation of the application of the NF 462 mark

Whole

document

1 15/03/2016

Quality: Integration of provisions to meet requirements of standard

NF EN ISO/IEC 17065 according to the document AFNOR CERTI A 0233v4

Editorial: Update of the corporate name of the mandated body and the mark

Normative references updated

Technical: Update for the fuel oil heat pumps

Body of

the

document

Editorial: Reorganisation of paragraphs of the document (in particular creation

of the introduction) and slight simplification of some paragraphs for better

readability. Processes redesigned. Part 6 renumbered and partially reworded.

Part 8 simplified (one hard copy for the files).

Part 5 Update of the test and audit bodies

Appendix

A

References to NF 414 for heat pumps adjusted

Technical: Update of formulas. COPECS-EP becomes PEEDHW-PE.

Harmonisation with NF 414 rev10 concerning Vmax, θref and V40

A.5.2.1: Maximum test time set at 2h30 A.5.2.1: Elimination of start-up tests when -7 °C or +2 °C is tested

A.5.2.1: Deletion of "effective"

Appendix

AA

Brought into compliance with EN13203-5:2016 (FPr ratified in Oct. 2015)

COPECS-EP becomes PEEDHW-PE

Whole

document 2 17/01/2018

Structure of the standard

New sampling rule

New provisions (Part 3).

1 COFRAC accreditation number 5-0517, the scope of the accreditation can be found on www.cofrac.fr


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CONTENTS

PART 1 .............................................................................................................................................................. 5

GENERAL PRESENTATION ................................................................................................................................. 5

Certified performance ................................................................................................................ 5 Performance thresholds ............................................................................................................. 6

EUROVENT CERTITA CERTIFICATION ........................................................................................... 8 Audit body ................................................................................................................................. 8 Test body/laboratories ............................................................................................................... 8

Authorisation request ................................................................................................................. 9 Authorisation approval and period ............................................................................................. 9 Authorisation verification and renewal ..................................................................................... 10 Inter-laboratory tests ............................................................................................................... 10 Procedure for tests carried out by an “NF authorised” laboratory (according to its authorisation

scope) 10

PART 2 ............................................................................................................................................................ 11

REQUIREMENTS OF THE STANDARD ............................................................................................................... 11

Test standards ......................................................................................................................... 11 Standards concerning the quality management system ............................................................ 11

Quality management provisions ............................................................................................... 12 Requirements specific to products ............................................................................................ 12

Reference texts ........................................................................................................................ 13 The NF logo and the marking process ....................................................................................... 14

PART 3 ............................................................................................................................................................ 16

CERTIFICATION PROCESS ................................................................................................................................ 16

3.1.1 Admission application ................................................................................................................... 16 3.1.2 Initial audit.................................................................................................................................... 16 3.1.3 Admission tests ............................................................................................................................. 17 3.1.4 Software verification ..................................................................................................................... 21 3.1.5 Evaluation and decision ................................................................................................................. 21

Follow-up of certified products and performance ...................................................................... 22 Monitoring audit ...................................................................................................................... 23 Monitoring tests....................................................................................................................... 23 Software verification ................................................................................................................ 23 Evaluation and decision ............................................................................................................ 23

Changes concerning the holder ................................................................................................. 24 Changes concerning production entities.................................................................................... 24 Changes concerning the quality organisation of the manufacturing and/or marketing process .. 24 Changes to the scope of certification: Additional Admission ...................................................... 24


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Changes concerning the NF-certified product: Extension ........................................................... 25 Maintenance application .......................................................................................................... 27 Temporary or permanent cessation of production of an NF-certified product ............................ 27

APPENDICES ................................................................................................................................................... 27


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Part 1 GENERAL PRESENTATION

Scope

The products covered by the certification reference standard are hybrid appliances combining a boiler and a heat pump. In the case of hybrid appliances with separate components, the assembly of such components is deemed to be an inseparable system for determining the certified performance.

This Multi-energy systems NF technical standard specifies the specific provisions for hybrid appliances. These appliances are used to power hot water heating systems and produce DHW (domestic hot water). These appliances comprise:

a type-C or type-B liquid/gas fuel-fired generator featuring the CE marking

a heat pump with an electrically driven compressor:

- "outdoor air/water" type, non-reversible

- "extracted air/water" type, non-reversible

a regulator for optimising the operation of the generator and heat pump

a storage tank for the domestic hot water function if applicable (integrating an exchanger if applicable)

one or more exchangers, if applicable

a hydraulic circuit switching component (e.g. 3-way DHW/heating switchover valve) if applicable

accessories such as:

- a DHW circuit circulation pump if applicable

- the lengths of pipes connecting the various components, with their insulation if applicable

- end connections if applicable

The maximum certified nominal thermal output of the heat pump is fixed at 100 kW and the maximum certified effective power output of the liquid/gas fuel-fired generator is fixed at 70 kW. In the case of hybrid appliances with separate components, the assembly of such components is deemed to be an inseparable system for determining the certified characteristics/performance.

Certified performance and thresholds

Certified performance

For the space heating function for one or more temperature settings, the certified performance is:

- The energy performance in heating mode: o The coefficient of performance of the heat pump (COP) o The thermal output of the heat pump o The absorbed electrical power

- The sound power level

The following performance can be optionally certified:

- The special performance of variable-output heat pumps: o the minimum continuous operation load ratio (LRcontmin) o the COP at LRcontmin o the performance correction coefficient at LRcontmin (CcpLRcontmin)

- The share of electrical power for the auxiliaries (Ratio)

Optionally for the DHW function for a tapping cycle and a given set-point temperature:

- The heating-up time (TH) - The standby power input expressed as primary energy (Pes)


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- The DHW primary energy efficiency (by storage) (PEEDHW-PE), for a given tapping cycle and a given set-point temperature (calculated based on the energy consumption expressed as primary energy)

- The reference hot water temperature (θ'WH) - The maximum volume of usable hot water (VMAX) or the Volume of mitigated water at 40 °C

(V40)

Comments:

- the CE characteristics of liquid/gas fuel-fired generators are provided for guidance in the certificates issued.

- the tests corresponding to the certified performance levels are carried out on the entire system.

- The holder shall use the NF logo without any risk of confusion between the values certified and those that are not.

Performance thresholds

1.2.2.1 Energy performance in heating mode

Outdoor air – water heat pump

T upstream (outdoor air) (°C)

-15 -7 2 7 20

T downstream (water) (°C)

T flow T return (*)

25 22 2.50 4.10

35 30 2.10 3.40

45 40 1.60 2.70

55 47 1.30 2.20

65 55 1.20 1.90

(*): For an upstream temperature of 7 ℃. For any other source upstream temperature, the test is performed with the nominal flow rate obtained during the 7 ℃ test.

Extracted air – water heat pump

T upstream (exhaust air) (°C)

5 10 15 20 25

T downstream (water) (°C)

T flow T return (*)

25 22 4.00

35 30 3.30

45 40 2.70

55 47 2.20

65 55 1.90

(*): For an upstream temperature of 20 °C. For any other source upstream temperature, the test is performed with the nominal flow rate obtained during the 20 °C test.

1.2.2.2 Sound power level

Sound power thresholds are set for specific heat pump heating capacity levels.

Heating capacity P [kW]

Sound power at Prated

Lw [dB(A)]

For information only: Thresholds of regulations 813/2013, Sound power level

at rated thermal output Pdesignh LwA [dB(A)]

Indoor Outdoor

0 P ≤ 6 ≤ 70

60 65

6 P ≤ 10 65 70

10 P ≤ 12 ≤ 73

12 P ≤ 20 70 78


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20 P ≤ 30 ≤ 78

30 P ≤ 50 80 88

50 P ≤ 70 No threshold defined 70 P ≤ 100 No threshold defined

1.2.2.3 Energy performance in domestic hot water mode

- Heating-up time th: 6 hours maximum - Maximum volume of usable hot water VMAX: greater than 1.2 x Effective volume of water Ve

- Reference temperature ’WH ≥ 52.5 °C.

Note: VMAX and ’WH thresholds mandatory for applications made up to revision 0 of the standard.

- Volume of mitigated water at 40 °C V40 minimum:

Draw-off mode M L XL

V40min [litres] 65 130 210

Definitions

The provisions set out in the NF general standard (§ 1.4) apply. The table below provides additional information specific to the NF 462 programme.

Applicant / Holder

Any legal entity, designated below, may apply for the right to use the mark:

- The intellectual owner of the products

- The product assembler

- The product distributor.

The contractual relationships that may exist between the applicant/holder and the various service providers to which it subcontracts one or more requirements covering the following steps: design, manufacture (with the exception of product components), assembly, inspections, marking and packaging, shall be subject to a contract as specified in APPENDIX 2, 3, 4 and 5. This contract defines the commitment of the subcontractor(s) to comply with the requirements of the relevant certification rules.

Authorised agent

The authorised agent may be the distributor or the importer; its various functions are clearly identified (see APPENDIX 2, 3, 4 and 5).

If the product comes from a production unit outside the European Economic Area, the applicant will appoint an agent within the European Economic Area, which must co-sign the application.

Distributor The types of distributor may be as follows:

- Distributors who have no technical influence on the product and distribute the product under the trade mark of the holder, this scenario does not give rise to any particular requirements.

- Distributors who have no technical influence on the product and distribute the product with a change of trade mark. In this case, an application must be submitted to maintain the right of use.

- Distributors who have no technical influence on the product, who request modifications that have no impact on the product's conformity with NF mark requirements (change in fairing, additional functions (home automation, etc.), colour, etc.) and who distribute the product with a change of trade mark. In this case, an application must be submitted to maintain the right of use as specified (see APPENDIX 2, 3, 4 and 5).

Certified products

The list of certified products and their information are available on the www.certita.fr website or on the www.marque-nf.com website. It includes in particular:

- identification of the product,

- these certification rules (standard);

- identification of the holder;

- certified characteristics/performance

http://www.certita.fr/

http://www.marque-nf.com/


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Range of appliances

A range of hybrid appliances is a set exclusively comprising:

- liquid/gas fuel-fired generators of the same type (C or B), covered by the same CE declaration of conformity issued by the manufacturer

- heat pumps belonging to the same range of heat pumps, such as defined in the NF 414 standard

- a tank belonging to the same range of tanks, such as defined in the NF 414 standard - a hydraulic circuit for the DHW function of the same principle and using exchangers

of the same technology (plates, coils, etc.) - the same hydraulic or refrigerating circuit switching component technology, if

applicable - the same control process.

Participants

EUROVENT CERTITA CERTIFICATION

Who should you contact? EUROVENT CERTITA CERTIFICATION SAS 48/50 rue de la Victoire F- 75009 PARIS Tel.: + 33 1 75 44 71 71 www.eurovent-certification.com - www.certita.fr Your contact: Fairose Mougamadou Email: [email protected] & [email protected]

Audit body

Each audit of the production unit, or possibly on the site of use, is carried out by an auditor from one of the following bodies, called the audit body:

Eurovent Certita Certification 48-50 rue de la Victoire

75009 PARIS

: +33 1 75 44 71 71

Website: www.certita.org

Email: [email protected]

AENOR Génova, 6

ES-28-28004 MADRID - SPAIN

: + 34 914 326 000

Website: www.aenor.es


LNE 29 avenue Roger Hennequin

F-78197 TRAPPES Cedex

: + 33 1 30 69 10 00

: + 33 1 30 69 12 34

Website: www.lne.fr


Auditors have the right to inspect the applicant's or holder's facilities in order to perform their mission.

Test body/laboratories

Each test (except those carried out in an "NF authorised" laboratory, see 1.5) is carried out at ECC’s request in the following laboratory, called the mark laboratory:

CETIAT Domaine scientifique de la Doua 25 Avenue des Arts - B.P. 2042

69603 Villeurbanne Cedex – France : + 33 4.72.44.49.00 : + 33 4.72.44.49.49

www.cetiat.fr - [email protected]

Use of Applicants’/Holders’ laboratories

An applicant/holder may be authorised to use its own accredited laboratory(ies) to conduct all or part of the tests required to examine its submitted admission/additional admission/extension application. If only part of the tests is performed, the remaining tests will be performed in a mark laboratory.

http://www.eurovent-certification.com/

http://www.certita.fr/

mailto:[email protected]


http://www.certita.org/


http://www.aenor.es/


http://www.lne.fr/




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The appliances admitted according to this procedure are subject to a systematic inspection in accordance with § Part 3.

When this authorisation is granted, the applicant/holder is said to have obtained “NF authorisation”, and the laboratory(ies) involved is/are said to be “NF authorised”. The authorisation of a laboratory applies only to this application of the mark, and any mention of this authorisation is prohibited.

Authorisation request

Prior to any request, an inter-comparison test between the applicant/holder’s laboratory and one of the independent mark laboratories must be carried out on an appliance.

An authorisation request must be submitted to ECC indicating the tests for which the authorisation is required, from those subject to the accreditation, with the following attachments:

a copy of the accreditation decision from the laboratory, by COFRAC or equivalent recognised by the E.A. (European cooperation for Accreditation) specifying its limitations (type of tests concerned);

the report(s) drawn up by the accrediting body as part of its accreditation procedure and any subsequent reports of verifications carried out by the accrediting body;

the commitment to comply with the relevant provisions of the Certification reference standard and the parts thereof;

The applicant will bear the costs of all of these operations.

The table below summarises the authorisation procedure for an accredited applicant/holder laboratory with respect to the NF mark:

Applicant/Holder ECC Mark laboratory

Phase 1

. sends an application and the complete file to ECC, in 1 copy. The application must

also specify the name of the independent mark laboratory that the manufacturer would like to perform the inter-comparison

test of phase 2.

. records the application and checks that it is complete;

. processes the application;

. informs the independent mark laboratory selected;

. issues the corresponding invoice to the applicant/holder.

Phase 2

. conducts the NF conformity tests;

. draws up the corresponding test report;

. sends to the mark laboratory:

. the test report

. the documents relating to the appliance tested

. makes the tested appliances available to the independent mark laboratory;

. issues an interpretation test order to the

independent laboratory;

. conducts the inter-comparison test;

. draws up the

corresponding test report; . sends the report to ECC

and to the applicant/holder;

. issues the corresponding invoice to the applicant/holder.

Phase 3

. examines the entire file (inter-comparison

test results, etc.); . makes a decision based on the results; . notifies its decision to the applicant/holder,

with a copy to the relevant mark laboratory. The certificate specifies the NF authorisation scope (applicable

documents, complete or partial tests).

Phase 4

. examines the renewal procedure.

Authorisation approval and period

ECC examines the request, checks that it is complete and approves or rejects the authorisation stating the reasons, or defers the decision by recommending an additional investigation.

The Special Committee is informed of the authorisations granted. The authorisation is valid for a maximum period of two years.


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Authorisation verification and renewal

The authorised laboratory keeps ECC regularly informed of the verifications performed by the accrediting body and the decisions made by the latter as part of its accreditation follow-up.

This information and the results of the verifications made pursuant to this Standard (“systematic” and other verifications) are examined by ECC which, after evaluation, may recommend maintaining, renewing, suspending or withdrawing the authorisation for all or part of the tests.

Any total or partial suspension or withdrawal of accreditation must lead to a review of the laboratory's status in respect of the mark. ECC makes a decision in light of the investigation performed by the accrediting body and the reasons for refusing accreditation.

It sets out the conditions applying to this possible renewal and specifies the verifications to be carried out.

Inter-laboratory tests

Every year, the accredited laboratory of an applicant/holder and one of the mark laboratories carry out standardised tests on 1 appliance presented for admission or sampled for this purpose. The test reports are submitted to ECC for a comparison of results. In the event of anomalies, the managers of both laboratories shall take the appropriate corrective actions under Eurovent Certita Certification's supervision.

After examining the test results, Eurovent Certita may, if necessary, and possibly after consulting the Special Committee, request further tests.

The applicant/holder will bear the costs of the tests performed by the independent laboratory.

Eurovent Certita Certification is responsible for monitoring these tests.

Procedure for tests carried out by an “NF authorised” laboratory (according to its authorisation scope)

Applicant/Holder ECC Mark laboratory

Phase 1

In the case of an application: . sends an application to ECC according to §

1.5.1. In the case of an application or a follow-up: . informs ECC of the NF authorised

laboratory selected for the appliance concerned

. in view of conducting the examination,

sends to the mark laboratory the report for the tests carried out in its NF authorised laboratory, in 2 copies.

In the case of an application:

. assigns a file number to the application;

. processes the application;

. issues the invoice that corresponds to the admission costs;

In the case of an application or a follow-up:

. records the test site of the appliance concerned;

. issues the invoices corresponding to examination of the report;

. sends a copy of the application to the mark laboratory.

. examines the test report;

. carries out or has carried

out the modifications or supplementary information, if necessary,

in agreement with ECC, . sends ECC the test

report and the

examination conclusions.

Phase 2

. carries out correct actions in the event of

deviation

. completes the applicant/holder's

application with the results sent by the mark laboratory;

. assesses the report and requests

corrective actions in the event of deviations outside of tolerances (rerating, etc.)

. analyses the relevance of the answer

Phase 3

. notifies its decision to the applicant/holder

according to the NF certification procedure.


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Part 2 REQUIREMENTS OF THE STANDARD

Reference documents

The standard of this application of the NF mark, under the terms of the French Consumer Code, is made up of:

the General Rules of the NF mark, which set out the general structure and the conditions of use of the mark, the conditions of validity and the sanctions in the event of improper use of the NF mark;

the Certification Manual for NF programmes managed by EUROVENT CERTITA CERTIFICATION: General provisions, known as the general standard, which describes the general working principles, the general requirements to be met and the procedures used to check compliance with these requirements,

this certification reference standard, which describes the technical characteristics to be respected, and the procedures used to check the conformity of these characteristics,

the standards to which this certification reference standard refers, and any additional technical specifications.

Standards

The date of the reference documents is listed below.

Test standards

- EN 14511 (October 2013): Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling o Part 1 - "Terms and definitions" o Part 2: - “Test conditions” o Part 3: - “Test methods” o Part 4: - “Requirements”

- EN 14825 (2016): Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling – Testing and rating at part load conditions.

- PrEN 13203-5: Gas-fired domestic appliances producing hot water o Part 5 (2016): Assessment of energy consumption of gas-fired appliances combined with

electrical heat pump. - Standards relating to sound tests (see APPENDIX 1). - NF 414: Certification rules for the Heat pumps NF mark - The performance in DHW mode must be determined according to the standard EN 13203-5

and the special conditions defined in APPENDIX 1. - The sound power levels must be determined under the conditions defined in APPENDIX 4 of

the NF 414 certification reference standard.

Standards concerning the quality management system

NF EN ISO 9001:2008 (and subsequent revisions)

Quality management systems – Requirements.

Note: Before September 2018, the provisions of the standard ISO 9001: 2015 can be applied. After September 2018, the provisions of the standard ISO 9001:2015 must be applied.

NF EN ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories.


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Quality management provisions and specific requirements

Quality management provisions

The provisions set out in the NF general standard (§ 2.3) apply.

Requirements specific to products

The manufacturer shall have the necessary resources and means during the inspections and tests to guarantee product conformity.

The manufacturer shall set up a documented inspection plan that shall, as a minimum, include the inspections and tests described in the following paragraphs and the complementary requirements defined in Part 3.

The inspection results shall be recorded in registers or other documents kept for this purpose and retained in accordance with a documented procedure.

The inspections defined individually in the paragraphs below and in Part 3 will also have to be documented.

The inspection results shall lie within the tolerances defined in the inspection instructions.

The quality control provisions in § 2.3 of the NF 414 standard also apply to these products.

The liquid/gas fuel-fired generators must feature the CE marking.

2.3.2.1 Control of suppliers and subcontractors

The manufacturer shall carry out an incoming goods inspection by sampling or any other evaluation over all the constituent elements involved in the assembly of the heat pumps, in order to ensure their compliance.

2.3.2.2 Inspection during production

2.3.2.2.1 Qualification of the brazers/welders

All operators working on all permanent assemblies (such as brazing, welding, gluing, expansion, enlarging, etc.) must be qualified and the manufacturer must be able to provide evidence thereof.

The manufacturer shall be able to trace the product back to the operators who carried out the permanent assembly operations.

2.3.2.2.2 Leak test (100 % inspection)

The manufacturer shall carry out leak tests on its products by any appropriate means. The effectiveness of the device must be proven.

In the event of a defect, the proper operation of all the circuits previously made since the last check must be carefully checked for tightness.

On the hydraulic circuit

On the refrigerating circuit

The manufacturer shall carry out a leak test of the refrigeration circuit at the operating pressure of the heat pump. Several techniques can be used for this test depending on the production conditions. For example, pressurisation with an inert gas (or other similar methods).

The test method used to detect the leaks must have the same sensitivity as the bubble test (described in standard EN 1779:1999). Standard ISO 5149-2:2014 can also be used. The relevance of the method used must be proven by the manufacturer.

2.3.2.2.3 Load in liquid refrigerant on the factory “packaged unit” (100 % inspection)

The methods used to achieve the vacuum in the refrigerating circuit, before loading the liquid refrigerant, must allow the residual pressure of air to drop and be monitored at less than 10 kPa (10-1 bar).

The conditions in which the liquid refrigerant is stored and the amount of liquid refrigerant injected into the refrigeration circuit must be controlled and managed.


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In the event of a defect, the proper operation of all the refrigerating circuits previously made since the last verification must be carefully checked for reload.

2.3.2.2.4 Tightness of the refrigerating circuit for an installation filled on site (100 % inspection)

If filling is performed at the time of installation, each constituent element of the system must comply with the criteria of 2.3.2.2.2 to guarantee that the components delivered to the installation engineer are in accordance with tightness requirements.

Before filling the installation, global tightness must be checked by the installation engineer, according to the manufacturer’s instructions indicated in a manual supplied with the appliance.

2.3.2.2.5 Production test for electrical safety according to EN 50106 (100 % inspection)

The electrical safety tests must be carried out in accordance with the requirements of standard EN 50106:2009 (according to § 1.1 and 1.2).

2.3.2.3 Inspections on the final product

2.3.2.3.1 Tests at the end of the assembly line (100 % inspection)

Each manufactured product must be operated at the end of the assembly line to check that it works properly.

2.3.2.3.2 Inspection of marking

Periodic inspections shall be carried out to ensure the compliance and presence of the marking on the certified product, as defined in Section 2.4 of this certification reference standard.

2.3.2.3.3 Visual inspection before packaging (100 % inspection)

Visual inspections shall be carried out before the product is packaged.

All the inspections and tests carried out throughout the assembly process shall be validated and recorded.

2.3.2.3.4 Availability of spare parts

The manufacturer shall draw up a procedure defining the measures taken to guarantee the availability of spare parts for 10 years after the product is taken off the market.

If components are modified, the manufacturer shall assess the impact on manufactured products that have already been delivered and offer replacement solutions that guarantee the performance of the HP. Records must be kept updated and retained.

2.3.2.3.5 Control of documents

The holder shall check all documents (technical, installation and sales documents, manuals, websites, etc.) that mention the certified characteristics/performance and the NF logo (as defined in § 2.4), before they are circulated. This check shall be validated and recorded by competent, identified persons.

The holder shall also ensure that it controls its application files for the right to use the NF mark, in order to inform ECC of any modification of elements forming them, particularly if they affect the certified characteristics/performance.

Certified characteristics/performance are verified during the audit.

Marking

Reference texts

2.4.1.1 The French Consumer Code

The provisions set out in the general standard apply.


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2.4.1.2 General rules of the NF Mark


The NF logo and the marking process

2.4.2.1 The NF logo

NF certified products must feature a designation and identification distinct from non-certified products. The holder must only use the NF logo to distinguish certified products, without any risk of confusion with other products, particularly with non-certified products.

The NF mark is indicated by the NF logo in compliance with the model below (French or English version):

The reference to www.certita.org and/or the heat pump categories (for example: heating – swimming pools) can be indicated under the above logo on a maximum of 2 lines and according to the NF mark graphic charter. The NF mark graphic design charter and graphic tools for the logo are available from ECC.

2.4.2.2 Marking of the certified product

The NF logo shall be permanently and indelibly affixed to the product for which the right to use the Multi-energy Systems NF mark has been granted. The marking of the product shall comply with the logo shown in § 2.4.2.1. For appliances comprising splits heat pumps, the NF logo shall be affixed to the outdoor and indoor unit. However, if not all of the units offered in the holder’s catalogue are covered by the combinations defined in the ranges for which the NF mark has been granted, then no NF logo shall be affixed. In this case, the holder must display the following wording on the rating plates of the units (indoor and outdoor), "Combinations admitted for the NF mark: see installation and user manuals".

In the NF certification system, the certified performance must appear on at least one of the supports (product, packaging or documentation). Notwithstanding the penalties laid down in the general rules of the NF mark, the holder may be prosecuted for fraud and/or misleading advertising if the certified characteristics/performance are incorrectly stated.

To ensure correct interpretation of the requirements of the NF mark and to prevent any of the documents from being returned, it is recommended to send any such documents to ECC for review.

2.4.2.3 Marking on the packaging of the NF certified product

When the packaging mentions the NF mark, it shall include the NF logo in accordance with the graphic charter.

MULTI-ENERGY SYSTEMS MULTI-ENERGY SYSTEMS

http://www.certita.org/


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2.4.2.4 Marking on documentation and in advertising

(Technical and sales documents, labels, posters, advertising, websites, etc.)

On one hand, the holder shall only use the NF mark on any document to distinguish certified products. On the other hand, the specific marking of certified characteristics and performance shall be restricted to the conditions for which the products benefit from the right to use the NF mark, as defined in § 2.4.2.2.

Therefore, the holder undertakes to only use the NF mark where there is no risk of confusion and interpretation. For this reason, publications shall include a chapter explaining the scope of the certificate. The consumer should be informed of the main reasons and benefits of using a certified product.

Reproduction of the NF mark in the letter-head of the holder’s correspondence is prohibited, unless the holder has been granted the NF mark for all of its products.

Examples of additional information that can be given with the marking:

- Name and address of the manufacturer, - Product designation, - Identification of the certification reference standard, - Certified characteristics/performance, - Certificate number, - Details of the overall construction, including the dimensions and weight, - Identification of the main components, - Detailed operations guide, including an explanation of any marking using a symbol, - The details of any maintenance required as well as the frequency, - Information on how to deal with failures, - Conditions of use for the product, - Reference to environmental noise regulations.

2.4.2.5 Additional provision concerning documentation

The additional requirements of the NF mark, below, shall be shown in the holder's documentation (technical, installation and sales documents, manuals, websites, etc.).

- For refrigerating circuits loaded at the site of use, the holder must indicate the instructions for assembly, loading and overall verification of the tightness of the appliance in the installation manual. The holder may refer to the standard ISO 5149-2 to define the installer's obligations.

- For heat pumps using ground water and for which the certified characteristics have been determined without an intermediate exchanger, the holder must clearly mention the following alongside the announcement tables: “Tests to assess the performance of the heat pumps have been carried out without intermediate exchanger. If this component is used on the installation, the performance is reduced and the stated characteristics are no longer certified”.

- For splits, if all of the units featured in the holder’s catalogue are not covered by the combinations defined in the ranges allowed to use the NF mark, the installation and user manuals must contain a chapter entitled “combinations allowed to use the NF mark”, which must include the number of the certificate of the right to use the NF mark and a reference to the website.


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Part 3 CERTIFICATION PROCESS __________________________________________________________________________________ Application for the right to use the NF mark must be drawn up in electronic version, and optionally in hard copy, for the attention of ECC according to the templates defined in APPENDIX 2, 3, 4 and 5 in French and/or English.

HOW TO OBTAIN CERTIFICATION: the admission procedure


This paragraph describes the procedure to be followed for an initial admission application.

3.1.1 Admission application

An initial admission application is submitted by an applicant who does not have the right to use the mark in the application concerned. This corresponds to a product (or a range of products) from a particular production unit, defined by a trade mark, a sales reference specific to the product presented and its technical characteristics.

The operating ranges for each appliance are declared by the applicant/holder and can be in whole or in part the performance matrices §1.2.2.1 given below (taken from the RT 2012 Heating Regulations if applicable).

The applicant/holder declares the performance of the heat pumps for one or more downstream temperatures, for the required upstream temperatures, either greater than or equal to the switchover temperatures, as defined in the matrices provided.

Other downstream source temperatures, either intermediate or greater than those stipulated in the performance matrices §1.2.2.1, can be declared by the applicant/holder for certification.

Operating ranges include two zones on either side of the switchover temperature: a zone where only the liquid/gas fuel-fired generator operates and a zone where the heat pump is allowed to operate. The operation of the heat pump takes priority over the operation of the liquid/gas fuel-fired generator. When the heat pump is sufficient to cover energy needs, only the heat pump operates.

As a minimum for the heating function, a declared point must correspond to an operating point with a COP threshold defined in the matrices §1.2.2.1.

For any application received after 1 January 2018, all data shall be expressed in SI units. A maximum of 2 digits after the decimal point shall be used and the sound power shall be an integer (no digit after the decimal point).

Declared points do not necessarily include the RT 2012 pivot point.

However, for some types of heat pumps, some operating points are mandatory according to the standard EN 14511, in particular to define reference flows.

Note: As a reminder, if the pivot value is not certified, the certified performance cannot be validated under RT 2012.

Two types of inspections are carried out for the NF 462 mark:

Audits conducted during visits to the production units;

Tests on the submitted products.

3.1.2 Initial audit

Each audit is performed by an audit body (see § 1.4.2) chosen by ECC as the audit manager.

The audit will last at least one day.

The purpose of this visit is to ensure that the measures defined and implemented by the applicant during the audited design and/or manufacturing and/or marketing process meet the Quality Requirements to be Met (see Part 2).

If the applicant subcontracts part of its activity, ECC reserves the right to designate an auditor to visit the subcontractor(s) according to the same terms established in this standard.


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The auditor must be provided with all the resources necessary (offices, installations, equipment) to perform the assignment, including the people qualified to carry it out.

An observer, bound to respect confidentiality (this observer may be chosen by ECC by standards and agreements which he has signed), can take part in the audit. The applicant is systematically informed by ECC of the presence of this observer prior to the audit.

Admission audits may be carried out together with Heat pump NF mark audits if hybrid appliances are manufactured at the same production site as the NF 414 certified heat pumps. The audit duration is adjusted accordingly on a case-by-case basis.

For each audit, an audit report is prepared and sent to the applicant. This report may, depending on the case, be sent to the applicant before or after the evaluation. It may be sent by the auditor, the audit body or ECC. Each report that has a deviation requires an answer within a time frame indicated in the report and/or its cover letter.

3.1.3 Admission tests

3.1.3.1 Sampling rule

The declared thermal and sound performance levels are checked by means of specific tests.

The test programme is defined by ECC according to the following rules, by taking into account any specific justified requests from the applicant.

Tests are performed under the responsibility of the mark laboratories. Each test is performed by one of the mark’s laboratories (see § 1.4.3) chosen by ECC. Depending on the nature of the equipment and test and study means of the applicant, ECC may, for some categories of appliances that it has or will have defined, authorise the applicant to conduct the required tests in its own laboratories according to a specified procedure described in Part 1.5. The tests are carried out in accordance with the standards and additional specifications mentioned in Part 2. A test report is drawn up by the laboratory and sent to ECC who will sent it to the manufacturer.

A single product will be tested, by ECC, for each range covered by the admission application, regardless of the number of products in the range. This will be a complete test [heat + DHW + Sound].

The performance of liquid/gas fuel-fired generators featuring the CE marking are taken into consideration without any testing.

The heat pump test programme is defined according to the switchover temperatures and operating ranges declared by the manufacturer.

The switchover temperature is the outdoor air temperature at which the heat pump stops operating and is defined by the regulation strategy.

The switchover temperature is declared by the applicant/holder for each downstream temperature line.

The performance of the heat pump are determined for operating points greater than or equal to the declared switchover temperatures.

3.1.3.2 Matrix & DHW – Standard tests

The number of measures to be performed according to the type of heat pump to certify a matrix depends on the operating range (downstream and upstream temperatures) declared as follows:

- 3 points for a declared line and 1 point per additional line,

Note: On a line, the number of points to be tested is limited by the number of declared points (an applicant/holder can certify only one point; therefore only this declared point will be tested).

Note: Once the number of points is determined, these points can be selected in any line (and column).

The performance in heating mode is measured according to the standard EN 14511.

Moreover,

- for some types of heat pumps, some operating points are mandatory (to define reference flows),

- the performance of the heat pump is tested according to the pivot point conditions of the RT 2012 matrix if declared,

- the special performance of variable-output heat pumps are determined at 1 operating point according to the pivot point conditions if declared,


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- The share of electrical power for the auxiliaries is tested at one operating point, at the pivot point conditions if declared.

The performance of the DHW function are measured for each hybrid system to be tested for each temperature and set-point and each tapping cycle declared.

3.1.3.3 Sound powers

Sound powers are tested under the conditions set out in APPENDIX 4 of the NF 414 standard, where the liquid/gas fuel-fired generator is off.

3.1.3.4 Testing

On request, the manufacturer's personnel may be authorised by ECC to assist with the preparation and installation of the units but not during the tests. The presence of the manufacturer is only possible during the installation phase, and possibly assists in setting the unit according to the instructions provided to ECC. Once the test begins, it must proceed without the manufacturer's presence.

If a date was proposed at least 4 weeks in advance, the laboratory does not have to propose a new date if the proposal is not suitable for the manufacturer.

As the storage site in the laboratories is limited, manufacturers shall inform ECC as soon as possible if they want to recover or organise the dismantling of their unit after the test, at their own expense.

During the test, the units shall be installed in accordance with the installation instructions provided by the manufacturer. A contact person shall be designated by the manufacturer to provide any support required during the test.

Specific instructions may be sent with the unit and must be sent directly to ECC, who will send them to the laboratory at the same time as the order for the tests. The laboratory shall not be held liable for incorrect installation if the participant has not provided these specific instructions.

If during the test, a component is not working or if the appliance is damaged and cannot be repaired and tested in the Laboratory, it will be considered as a “component failure”.

In this specific case, the laboratory must stop the test immediately and inform ECC, who will inform the manufacturer. A new test shall be scheduled within 1 month. The complete test shall then be carried out on the repaired unit or on a new unit.

3.1.3.5 Special test conditions

Start-up:

During admission, the lowest switchover temperature will be tested among the switchover points for the applications declared.

The heat pump must be capable of starting and operating for 20 minutes.

In addition, the following test is carried out to ensure that the heat pump operates between the switchover temperature and the first certified upstream temperature:

Test conditions:

- dry (humid) outdoor air temperature: +5(4) °C - downstream temperature of the water:

o 30-35 °C if the switchover temperature at 30-35 °C is less than or equal to +5 °C o 22-25 °C otherwise

The hybrid appliance is started. After the heat pump restarts for the first time or following a defrost cycle (according to EN 14511-3) if applicable, the operating time of the heat pump is read for 2h30 over a complete frost/defrost cycle.

The appliance is declared compliant if the heat pump does not stop and the power delivered is constant or that the operating time of the heat pump is greater than or equal to 60 % over the entire duration of the test.

In heating mode:

The energy performance in heating mode must be determined under the conditions precised in the §1.2.2.1. The corresponding matrices appear in the §1.2.2.1 for each type of HP with the following conventions:

- When a COP value is explicitly mentioned, it defines the applicable threshold for the corresponding operating point.


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- The matrix items highlighted in yellow correspond to any pivot points defined in RT 2012.

The performance are tested according to the standard EN 14511 on the heat pump only, as the boiler is not allowed to operate.

Share of electrical power for the auxiliaries:

The standby electrical power for the auxiliaries of the generator and heat pump (Psb) is measured with the appliance in standby mode according to the provisions of the standard EN 14825. The share of the electrical power for the auxiliaries in the total electrical power (Ratio) is the ratio between the standby power and the power input at the pivot point.

Sound power level:

The sound power levels must be determined under the conditions defined in Appendix 4 of the NF 414 certification reference standard.

The test will be done on the hybrid system with only the thermodynamic generator in operation.

In DHW mode:

For the performance tests in DHW production mode, the applicant/holder must provide all the components of the hybrid appliance for producing DHW, including the accessories mentioned in § 1.1, and the assembly will be installed according to its instructions under the environmental conditions defined in draft standard Pr EN 13203-5.

The test concerns the complete multi-energies system. It is tested in normal mode (any active generator). System regulation is responsible for managing the operation of the 2 generators. This does not involve systematic start-up of the boiler but if requested by the regulation, it must be able to start.

Electric back-up is not allowed. The extra gas is real (no virtual extra).

As V40 may be unlimited for hybrid HPs, V40 thresholds are exceeded.

θ’wh is defined as the trapezium area equivalent to the expected V40 mini.

For heat pumps with continuous variable output control (inverter compressor or other type of power variation), the manufacturer must provide the laboratory with the corresponding setting procedure for obtaining the declared nominal operating point(s).

During the different heating capacity measurement tests, the supply voltage frequencies and/or speeds are noted for compressors and fans and mentioned in the test report.

For heat pumps with air connections, the connection specifications defined for the sound tests (see Appendix 4) also apply to thermal tests, meaning use of the same connection ducts.

In the case of a range of HP that can be installed either indoors or outdoors (as is or with optional equipment), where the pressure in the discharge duct (towards the outside) is less than 25 Pa, the heating capacity measurement tests are conducted in the outdoor free air supply configuration with a pressure equal to 0.

Sound:

The sound powers of the heat pump must be determined under the conditions set out in Appendix 4, where the liquid/gas fuel-fired generator is off.


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Special performance of variable-output heat pumps:

The applicant/holder shall send the means for obtaining the minimum continuous operation load ratio from the product under evaluation (LRcontmin).

- LRcontmin is only calculated for the matrix pivot point temperature conditions - LRcontmin is defined as the minimum continuous operation load ratio, i.e.:

LRcontmin = Minimum continuous operation load thermal output/Thermal output declared and/or measured under pivot point conditions

A heating capacity test at this load ratio is performed to verify the continuous operation of the HP (no cycling) and record the following performance values:

- The thermal output measured in this way is compared to the heating capacity measured and/or declared at the same pivot point of the matrix and LRcontmin is calculated. If the difference between the calculated value and the value of LRcontmin declared by the manufacturer is less than 10 % of the declared value, the value of LRcontmin is then validated.

- If the value of LRcontmin is validated, the COP at LRcontmin is measured and validated, the CcpLRcontmin is then calculated and validated as follows: CcpLRcontmin = COP at LRcontmin / COP at pivot point

3.1.3.6 Tolerances

The applicable tolerances on the declared values are defined as follows:

- + 5 % for power input - - 5 % for the measured thermal output and COP - + 20 min. for the heating-up times (TH) - - 10 % for the standby power input expressed as primary energy (Pes) - - 10 % for the DHW primary energy efficiency (PEEDHW-PE) for a given tapping cycle - - 1 °C for the reference hot water temperatures (θ'WH) - - 10 % for the maximum volumes of usable hot water (VMAX) and mitigated water at 40 °C (V40) - +2 dB(A) for sound power levels Lw

3.1.3.7 Validation or rerating

- If the declared values comply with the measured values taking the applicable tolerances into account, they are validated.

- If the declared values do not comply with the measured values, they are reset to the measured values, corrected by the applicable tolerance (see below).

Thermal performance:

For the RT 2012 matrices, the values corresponding to unmeasured points, the declared values are corrected by a value equal to the mean differences relative to the compliance thresholds; this mean is calculated solely from the nonconforming measured values (see example below).

Example of Air/Water HP - Declared and measured powers and difference

Downstream temperature

[°C]

Upstream temperature (air side) [°C]

T flow

[°C]

T retur

n [°C]

-7 2 7

Capacity [kW] [%] Deviatio

n


n


n Declare

d Measure

d Declare

d Measure

d Declare

d Measure

d

35 30 4.20 4.00 4.8 3.40 7.20 6.60 8.3 45 40 4.00 3.70 7.5 2.80 2.50 10.7 7.40

Tolerance on Powers = 5 %

Processing of values:

Measured values compliant: 4.0 validated value = declared value = 4.2

Measured values non-compliant: validated value = measured value x 1.05

Unmeasured values: validated value = Declared value corrected by the mean of the relative differences in relation to compliance thresholds, mean calculated from non-compliant values only.


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Mean relative differences in relation to compliance thresholds: (3.3+2.5+5.7)/3= 3.8 %

Example of Air/Water HP - Corrected powers

Downstream

temperature [°C]

Upstream temperature (air side) [°C]

T flow [°C]

T return [°C]

-7 2 7

[kW] Declared

[%] Deviation

[kW] Certified

[kW] Declared

[%] Deviation

[kW] Certified

[kW] Declared

[%] Deviation

[kW] Certified

35 30 4.20 4.8 4.20 3.40 3.30 7.20 8.3 6.90 45 40 4.00 7.5 3.90 2.80 10.7 2.60 7.40 7.10

Sound performance:

If the declared values fail to comply with the measured values, they are reset to the measured values and corrected by the tolerance.

If the measured sound power level of a product exceeds the declared level for the product by more than 2 dB(A), all the values in the range must be changed on the basis of the deviation observed on the tested product, between the declared sound power value and the test report result.

Performance for the DHW function:

Examples:

Machine

tested

Machine

not tested

Machine

tested

Machine

not tested

Machine

tested

Machine

not tested

Performance th PEEDHW-PE Pes

Declared 1h00 2h00 2.50 2.2 10 12

Measured 1h30 - 2h00 - 8 -

Deviation 30 min - 0.50 - 2 -

Certified Declared + deviation - tolerance Declared x (1+ % deviation - % tolerance)

1h10 2h10 2.25 1.98 9 10.8

For the machine tested, if the declared values fail to comply with the measured values, they are reset to the measured values and corrected by the applicable tolerance (see examples below).

The difference observed and corrected by the applicable tolerance is then applied to the values declared from the other models of the range.

3.1.4 Software verification

This option is not applicable for the NF 462 programme.

3.1.5 Evaluation and decision

Each report that has a deviation requires an answer within a time frame indicated in the report and/or its notification of dispatch.

The 2nd test is not systematic. Technical justification will be necessary so that ECC can grant a 2nd test. If this 2nd test was granted:

The 2nd test is carried out on the same unit (without any modification on the unit and without leaving the laboratory), the test will be repeated depending on the deviations:

- All heat points only if the sound points were compliant. - All sound points only if the heat points were compliant.

If the 2nd test is carried out on a repaired unit or a new unit, or if the unit was sent back, a complete test must be carried out (all heat points and all sound points).

If the 2nd test fails, the performance declared must be re-evaluated based on the results of the 2nd test and the rerating rules. A 3rd test will not be granted.

When the applicant has been informed of the performance re-evaluation, the applicant must correct its technical documentation and submit it at least electronically to ECC before the certification can be granted. Consequently, catalogues and websites must be updated within the defined period. These elements will be checked during the next on-site audit.


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The table below summarises the admission process:

Admission

1. Declaration of templates and performance + administrative files X

2. Management of tests by ECC (order sent to the laboratory and laboratory

chosen by ECC), except in the case of authorised laboratory (1.5) X

3. Rerating if non-compliant test result X

4. Draft catalogue (digital) if rerating X

5. At the same time as the admission tests, audit of the production sites X

6. Corrective action to be provided, if non-compliant audit result(s) X

7. Certification decision X

8. Publication of certified data on the website X

MAINTAINING THE CERTIFICATION: monitoring procedures

The procedures described in § 3.1 will also be applicable during follow up.

Follow-up of certified products and performance

Throughout certification, the holder must: - comply with the requirements defined and the marking conditions described in Part 2; - update its certification file; - systematically inform ECC of any change in the features of the certified product.

After the 2018 follow-up campaign, ECC will send a list of active certificates (available and visible on the ECC site) to holders for validation. Administrative costs and sampling for the follow-up test campaign will be invoiced based on the validated list.

ECC will follow up the certified products as soon as the right to use the NF mark is granted. This

follow-up includes: - the on-site audits - the tests on the products - the monitoring of the use of the mark and the logo on the products and any communication

support. The NF mark is granted to a product from a particular production unit, which is defined by a trade mark, a specific sales reference and technical characteristics. Consequently, any modification to the

conditions of obtaining the NF mark shall be reported in writing to ECC by the holder. In addition,

ECC reserves the right to perform or have performed any audits or additional tests that it deems

necessary following complaints, disputes or litigations that it may be aware of and relative to the use of the NF mark. Inspections may be performed at sales outlets. In the event of litigations with users, inspections may include sampling or testing on the sites of use (in this case, the holder is invited to send representatives to attend).

A product sampled for a follow-up test cannot be modified or abandoned during the test campaign in progress. Similarly, the range corresponding to the product sampled for the follow-up test cannot be modified or obsoleted during the test campaign in progress.

If a range is going to change during the follow-up campaign, the manufacturer must inform ECC in advance (providing justification + withdrawal letter for the range) during the pre-selection so that ECC can select another product in another range, if applicable.

A follow-up test cannot be combined with an extension or additional admission test.

It will not be possible to increase performance after a follow-up test.

It will not be possible to modify the performance of units previously tested or previously assessed units or ranges. However, if performance is improved (change of component or technique), this must be declared and justified in a test report.

If the unit(s) selected and/or the documents necessary for carrying out the test and/or inspections have not been provided before the closing date set by ECC, a letter of formal notice will be sent by ECC with a deadline for providing the elements or delivering the unit to the laboratory. If the holder does not respond, it will be suspended for the test campaign and audits in progress. To re-integrate


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the programme, the holder must catch up on and complete its test campaign and audits not carried out.

Monitoring audit

The aim of this visit is to ensure that the measures defined and implemented by the holder during the audited design and/or manufacturing and/or marketing process meet the Quality Requirements to be Met (Part 2). Follow-up audits may be conducted together with NF 414 mark audits if hybrid appliances are manufactured at the same production site as the NF 414 certified heat pumps. The audit duration is adjusted accordingly on a case-by-case basis. For each audit, an audit report is drawn up and given or sent to the holder. Each report that has a deviation requires an answer within a time frame indicated in the report and/or its cover letter. The audit will last at least one day. Reinforced monitoring may be implemented for a defined period in the event of breach of the certification rules. This may be adjusted as far as doubling the normal frequency of audits, with or without increasing the manufacturer's inspections and samples for testing.

Monitoring tests

Each year, the holder’s products are sampled for tests according to the rule below.

No. of certified

ranges <= 3 No. of certified ranges

>3 & <= 6 No. of certified ranges

> 6 No. of products tested 1 2 3

During follow-up, the lowest switchover temperature will be tested among the applications chosen.

Products to be sampled are chosen by ECC, who communicates the appliances to be manufactured

in advance to the holder. Tests are performed in the mark laboratory (see Part 1), in accordance with the standards set out in Part 2. A test report is drawn up by the laboratory and then sent to the holder

by ECC. For holders with an “NF authorised” laboratory (see Part 1.5), one of the two sample

products must be subject to an inter-comparison with a mark laboratory. The other product tested in

the authorised laboratory must be subject to a test report drawn up and sent to ECC. The tolerances defined in § 3.1.3.6 are also applicable for the follow up campaign. If the test results for a sample product are different from the certified performance of this product, except from the defined tolerances, then all the values of the certified performance of the range must be changed on the basis of the test

report results for the tested product.

If procedure no. 1 concerning the examination of applications was chosen for additional admissions (3.3.4) and/or extension (3.3.5) in year N, then 1 test is deducted from the follow-up for year N+1 only if the following 2 conditions are met: - at least one anticipated follow-up test is compliant (regardless of the number of additional admissions/extension in year N), - the number of follow-up tests by the manufacturer in N+1 is, according to the table above, strictly greater than 2.

The above-mentioned provisions are not applicable if only procedure no. 2 was chosen for examining additional admission (3.3.4)/extension (3.3.5) applications.

Software verification

This option is not applicable for the NF 462 programme.

Evaluation and decision

The provisions set out in § 3.1 are applicable.


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STATEMENT OF CHANGES

Changes concerning the holder

The provisions set out in the NF general standard (§ 3.3.1) apply.

A new application may be submitted and its examination may be simplified depending on the changes.

Changes concerning production entities


The application shall be presented in accordance with the conditions and templates included in Part 8.

The holder shall declare this transfer in writing to ECC who organises an audit of the new production site, and if necessary, will also perform tests.

The methods for assessing and deciding upon renewal of the certification are the same as those described for admission in Part 3.1.

Changes concerning the quality organisation of the manufacturing and/or marketing process


Changes to the scope of certification: Additional Admission

This is submitted by an applicant who has the right to use the mark in the application concerned;

The application shall be presented in accordance with the conditions and templates included in APPENDIX 3. The steps described in § 3.1 (in particular the rerating rule, see 3.1.3.7) are applicable. The audit can be adapted or combined with a monitoring audit.


Irrespective of the application examination procedure chosen by the manufacturer, see below, a single product will be tested for each range covered by the additional admission application, regardless of the number of products in the range. This will be a complete test [heat + DHW + Sound].

For each additional admission application, the manufacturer will be able to choose one of the following procedures:

- Procedure 1: Test report provided with the application

If the manufacturer chooses this procedure, it must provide with its application a test report produced in one of the mark’s laboratories.

After analysing the file, if the application is admissible, the range is then certified.

Following the certification decision

The certificate is sent to the manufacturer and the data is posted online.

ECC will select a unit for anticipated follow-up from the products of the range certified during

this additional admission.

The manufacturer must deliver the unit to the laboratory chosen by ECC. The test will be ordered with the laboratory by ECC. The provisions set out in § 3.2.3 apply.

If the test is compliant, the certificate is renewed.

If the test is not compliant, ECC will rerate the range and the manufacturer must provide a draft catalogue (electronic) with the rerated performance. Implementation of the corrective action will be checked during audit N+1.

- Procedure 2: Test report not provided with the application

If the manufacturer chooses this option, no test report is required during examination of the application.


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However, ECC will select a unit from the products declared for each additional admission.

The manufacturer must deliver the unit to the laboratory chosen by ECC. The test will be ordered with the laboratory by ECC.

If the test is compliant, the performance declared will be validated.

If the test is not compliant, ECC will rerate the range. The manufacturer must then provide a draft catalogue (digital) with the rerated performance. Implementation of the corrective actions will be checked during audit N+1.


Following the certification decision, the certificate is sent to the manufacturer and the data is posted online.

The table below summarises the additional admission process:

Procedure 1 Procedure 2

1. Declaration + administrative file X X

2. Test report provided by the manufacturer to justify the application (choices of machine and laboratory by the manufacturer)

X

3. Management of the tests by ECC (order with the laboratory by ECC and choice of laboratory by ECC)

X

4. Rerating if non-compliant test report X X

5. Draft catalogue if rerating X X

6. At the same time as the additional admission tests, audit of the production site (case of adding a new factory)

X X

7. Corrective action, if the audit result is not compliant. X X

8. Certification decision X X

9. Publication of data on the website X X

10. Following the certification decision, one HP per additional admission will be tested during anticipated follow-up by ECC

X

11. Rerating if non-compliant test report X

12. Draft catalogue if rerating X

13. Update of the website X

Changes concerning the NF-certified product: Extension

An extension application for a product whose certified characteristics/performance have been modified (or a modified range).


The application shall be presented in accordance with the conditions and templates included in APPENDIX 4. The steps described in § 3.1 (in particular the rerating rule 3.1.3.7) are applicable subject to the following specific features:

Irrespective of the application examination procedure chosen by the manufacturer, see below, a single product will be tested for each range covered by the extension application, regardless of the number of products in the range, exclusively for the following case:

- Extension application for a certified range of products that is modified (modification and/or addition of performance). This will be a complete test [heat + DHW + Sound] on one of the modified products in the range.


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- To change the name of an already certified range and/or the references of already certified products, when performance remains unchanged, and exclusively for these cases, a test report will not be needed to justify the application.

The audit can be adapted or combined with a monitoring audit.

Any changes to the certified product with respect to the application file, the accepted model or the rules defined in the Certification reference standard which is likely to have an impact on the product’s conformity with the requirements of this certification standard must be declared in writing to ECC, who will determine whether this constitutes an application to extend the certification.

For each extension application, the manufacturer will be able to choose one of the following procedures:

- Procedure 1: Test report provided by the manufacturer with the application

If the manufacturer chooses this procedure, it must provide with its application a test report produced in one of the mark’s laboratories.


Following the certification decision:

The certificate is sent to the manufacturer and the data is posted online.

ECC will select a unit for anticipated follow-up from the products of the range certified during this extension.

The manufacturer must deliver the unit to the laboratory chosen by ECC. The test will be ordered with the laboratory by ECC. The provisions set out in § 3.2.3 apply.

If the test is compliant, the certificate is renewed.


- Procedure 2: Test report not provided with the application

If the manufacturer chooses this procedure, no test report is required during examination of the application.

However, ECC will select a unit for an extension test from the products declared for each extension application.

The manufacturer must deliver the unit to the laboratory chosen by ECC. The test will be ordered with the laboratory by ECC.

If the test is compliant, the performance declared will be validated.



Following the certification decision, the certificate is sent to the manufacturer and the data is posted online.

The table below summarises the extension process:

Procedure 1 Procedure 2

1. Declaration + administrative file X X

2. Test report provided by the manufacturer to justify the application (choices of machine and laboratory by the manufacturer)

X

3. Management of the tests by ECC (order with the laboratory by ECC and choice of laboratory by ECC)

X

4. Rerating if non-compliant test report X X

5. Draft catalogue if rerating X X


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6. At the same time as the extension tests, audit of the manufacturer’s production site(s), if applicable

X X

7. Corrective action, if the audit result is not compliant. X X

8. Certification decision X X

9. Publication of data on the website X X

10. Following the certification decision, one HP per extension will be tested during anticipated follow-up by ECC

X

11. Rerating if non-compliant test report X

12. Draft catalogue if rerating X

13. Update of the website X

Brand name application

The application shall be presented in accordance with the conditions and templates included in APPENDIX 5.

An application to maintain NF certification for a product that will be marketed under a different trade mark and/or sales reference without any change to its certified characteristics.

If distributing under different trade marks, certain modifications in appearance may be made to the products concerned if they do not cause any functional impacts. The manufacturer shall then specify in its maintenance application the list of modifications made to the products in question. ECC then ensures that these arrangements have no functional impacts.

Temporary or permanent cessation of production of an NF-certified product


CONDITIONS FOR STOPPING MARKING OR REMOVAL OF THE MARK IN THE EVENT OF SUSPENSION, WITHDRAWAL OR WAIVER

The provisions set out in the NF general standard (§ 3.4) apply.

APPENDICES __________________________________________________________________________________ CHECKLIST – APPENDICES 2, 3, 4 and 5

Documents to be supplied Admission Additional Admission

Extension Brand name

Form letter 1 X X Form letter 2 X Form letters 3A and 3B X Standard sheet 1 X (X)* (X)* (X)* Standard sheet 2 X X X Standard sheet 3 (X)* (X)* (X)* Standard sheet 4 (in the case of an authorised agent) X X X Standard sheet 5 X X X Wiring Diagram X X X Rating plate (the NF logo marking draft) X X (X)* Installation and user manual in French and/or English X X X X Distributor/beneficiary's commercial documentation X Test report X X (X)*

* if it is necessary


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APPENDIX 1: DHW TESTS FOR HYBRID APPLIANCES COMBINING A BOILER AND A HEAT PUMP

CONTENTS

APPENDIX 1: DHW TESTS FOR HYBRID APPLIANCES COMBINING A BOILER AND A HEAT PUMP ............................................................................ 29

A1.1 Scope .................................................................................................. 29

A1.2 Test conditions................................................................................... 29

A1.3 Determination of the energy consumption of appliances .............. 29 A1.3.1 General ....................................................................................................... 29 A1.3.2 Heating-up time ........................................................................................... 29 A1.3.3 Primary energy power input in stabilised mode (Pes) ................................... 29 A1.3.4 Energy recovered by the water .................................................................... 30 A1.3.5 Draw-off cycles ........................................................................................... 30 A1.3.6 Calculation of gas or fuel oil energy ............................................................. 30 A1.3.7 Calculation of the electrical energy .............................................................. 31 A1.3.8 Calculation of the daily primary energy consumption.................................... 31 A1.3.9 DHW primary energy efficiency ................................................................... 31

A1.4 Determination of the reference hot water temperature and maximum volume of usable hot water ............................................................ 31

A1.5 Main results ........................................................................................ 32


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A1.1 SCOPE

This appendix specifies the test methods in standard EN 13203-5:2016 for determining the performance of hybrid appliances in DHW mode.

A1.2 TEST CONDITIONS

Paragraph § 4 of the standard applies.

A1.3 DETERMINATION OF THE ENERGY CONSUMPTION OF APPLIANCES

A1.3.1 General

§ 5.1 of the standard applies.

A1.3.2 Heating-up time

The test involves determining the time required to heat the stored volume of water from an initial state until the appliance is stopped for the first time by the thermostat in the tank. The initial state is defined when the temperature of the tank is equal to the temperature of the cold water inlet specified in the reference conditions of § 4 of the standard. The appliance is then powered on. The heating time th, the electrical energy supply Weh and the volume of gas Vgh or the mass of fuel oil Mfuel oil are measured from the moment the appliance powers on until shut down by the hot water thermostat in the tank. The electrical energy measured must be corrected according to § 5.6 of the standard with td=teh and by replacing the coefficient 3.6 by 1/(3600x1000) in formulas 13 to 16: Weh=WehM-WElCorr (1) The gas energy or fuel oil used during the heating-up time is calculated according to:

Qgh=Vgh × K × PCIgas (2)

or: Qfuel oil=Mfuel oil x NCVfuel oil

where: Qgh is the gas energy used calculated using NCV [kWh] Vgh is the volume of gas used [m3] Mfuel oil is the mass of fuel oil measured during the test [kg] NCV is the net calorific value of the gas [kWh/m3] (at 15 °C and 1,013.25 mbar) or of the fuel oil [kWh/kg]

and: K = pa+pg

1013.25 ×

288.15

Tg+273,15 (3)

where: pa is the atmospheric pressure [mbar] pg is the gas pressure [mbar] Tg is the gas temperature [°C]

A1.3.3 Primary energy power input in stabilised mode (Pes)

The power input in stabilised mode is determined by measuring the electrical power absorbed by the appliance and the gas energy or fuel oil used over a full number of on/off cycles triggered by the thermostat in the tank in the absence of hot water tapping. When the thermostat stops the appliance after the heating-up period, the system performs a given number of complete cycles or operates for a minimum duration without tapping any hot water. This test should be carried out during a 48-hour period or less if six on/off cycles are produced. The time tes, the electrical energy absorbed Wes and the gas energy Qgs or fuel oil Qfs used are determined over the last on/off cycle. The electrical energy measured must be corrected according to § 5.6 of the standard where td=tes and by replacing the coefficient 3.6 by 1/(3600x1000)t in formulas 13 to 16: Wes=WehM-WElCorr (4) The primary energy power input in stabilised mode is determined based on § 5.4.2.2 and 5.5.2.2 of standard:

Pes = Q̇elec,stb × primel

+Q̇gas,stb (5)

or: Pes = Q̇elec,stb × primel

+Q̇fioul,stb (6)

where: Q̇elec,stb = Wes

tes×3600 (7)

Q̇gas,stb =Qgs

tes×3600 (8)

Q̇fioul,stb =Qfs

tes×3600 (9)

where: Pes is the primary energy power input in stabilised mode [kWep]


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Wes is the electrical energy during the last on/off cycle [kWh] Qgs is the gas energy during the last on/off cycle calculated using NCV [kWh] Qfs is the fuel oil energy during the last on/off cycle calculated using NCV [kWh] primel is the factor for converting electrical energy into primary energy tes is the time of the appliance's last on/off cycle [s] The gas Qgs or fuel oil Qfs energy used is calculated using the following formula:

Qgs=Vgs × K × PCIgas (10)

or: Qfs=Mfs x NCVfuel oil (11)

where: Qgs is the gas energy used calculated using NCV [kWh] Qfs is the fuel oil energy used calculated using NCV [kWh] Mfs is the mass of fuel oil measured during the test [kg] Vgs is the volume of gas used [m3] NCV is the net calorific value of the gas [kWh/m3] (at 15 °C and 1,013.25 mbar) or of the fuel oil [kWh/kg]

and: K = pa+pg

1013.25 ×

288.15

Tg+273,15 (12)

where: pa is the atmospheric pressure [mbar] pg is the gas pressure [mbar] Tg is the gas temperature [°C]

A1.3.4 Energy recovered by the water

§ 5.3 of the standard applies. The effective energy recovered by the water QH2O is given using the formula:

QH2O = cw × ∑ ∫ Di × ∆Ti(t) × dtt1

0ni=1 (13)

where: n is the number of draw-offs Di is the drawn off water flow rate [l/min] ΔTi (t) is the instant temperature rise during the draw-off [K] ti is the effective water draw-off time [min] cw is the heating capacity of water equal to 1,163.10-3 kWh/l.K

A1.3.5 Draw-off cycles

§ 5.2 and § 5.4.1 of the standard apply. The gas Qgas,S [kWh] or fuel oil Qfuel oil,S energy [kWh] used during the draw-off is calculated according to:

Qgas,S=Vgh × K × PCIgas×Qref

QH2O (14)

or: Qfuel oil,S=Mfuel oil x NCVfuel oil×Qref

QH2O

where: Qgas,S is the gas consumption for the complete draw-off cycle, calculated based on the net calorific value [kWh]

Qfuel oil,S is the fuel oil consumption for the complete draw-off cycle, calculated based on the net calorific value [kWh]

Qgh is the gas energy used calculated using NCV [kWh] Vgh is the volume of gas used [m3] Mfuel oil is the mass of fuel oil measured during the test [kg] NCV is the net calorific value of the gas [kWh/m3] (at 15 °C and 1,013.25 mbar) or of the fuel oil [kWh/kg]

and: K = pa+pg

1013.25 ×

288.15

Tg+273,15 (15)

where: pa is the atmospheric pressure [mbar] pg is the gas pressure [mbar] Tg is the gas temperature [°C] Qref is the total energy drawn off for the draw-off cycle (values from tables 2 to 8 of the standard) [kWh] QH20 is the energy recovered by the water [kWh]

A1.3.6 Calculation of gas or fuel oil energy

§ 5.4 of the standard applies.

Qgas=Qgas,S+(24-tTTC)xQ̇gas,stb (16)

where: Qgas is the total consumption of gas [kWh] Qgas,S is the gas consumption for the complete draw-off cycle, calculated based on the net calorific value

[kWh]

Q̇gas,stb is the gas energy used in stabilised mode [kW]

tTTC is the test cycle time [h] Similarly:


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Qfuel oil=Qfuel oil,S+(24-tTTC)xQ̇fioul,stb (17)

where: Qfuel oil,S is the fuel oil consumption for the complete draw-off cycle, calculated based on the net calorific value [kWh]

Q̇fioul,stb is the fuel oil energy used in stabilised mode [kW]

A1.3.7 Calculation of the electrical energy

§ 5.5 of the standard applies. The measured total absorbed electrical energy WEL-M-TC [kWh] of the appliance throughout the measurement of the tapping cycle tTTC is corrected with the electrical energy used WEL-Corr [kWh] by the fans or liquid pumps according to § 5.6 of the standard (and by replacing the coefficient 3.6 by 1/(3600x1000) in formulas 13 to 16). Thus the total electrical energy during the draw-off is calculated according to:

Eelecco=(WEl-M-TC

-WElCorr)×Qref

QH20 (18)

where: Eelecco is the corrected total electrical energy [kWh] WEL-M-TC is the measured total electrical energy [kWh] WElCorr is the function correction of the fans or liquid pumps in kWh according to § 5.6 of the standard Qref is the total energy drawn off for the draw-off cycle (values from tables 2 to 8 of the standard) [kWh] QH2O is the energy recovered by the water [kWh] For calculating the total electrical energy Qelec [kWh], § 5.6 of the standard applies:

Qelec=Eelecco+(24-tTTC)xQ̇elec,stb

A1.3.8 Calculation of the daily primary energy consumption

For a draw-off cycle, the daily primary energy consumption is calculated according to the following equation: EEP-TC = Qelec x primel + Qgas (19) or: EEP-TC = Qelec x primel + Qfuel oil (20) where: EEP-TC is the daily primary energy consumption [kWhep] Qgas is the total gas energy used [kWh] Qfuel oil is the total fuel oil energy used [kWh] primel factor for converting electrical energy into primary energy

A1.3.9 DHW primary energy efficiency

The domestic hot water primary energy efficiency (by storage) PEEDHW-PE for a given draw-off cycle is calculated as follows:

REPECS-EP=Qref

EEP-TC

(21)

A1.4 DETERMINATION OF THE REFERENCE HOT WATER TEMPERATURE AND MAXIMUM VOLUME OF USABLE HOT WATER

The test is performed on a maximum tapping volume starting when the compressor is off, at the end of the last measurement period for the tapping cycles. Continuous hot water tapping begins and continues until the hot water temperature, θWH(t), falls below 40 °C. The hot water flow rate must be set to 10 ± 0.5 l/min. A reference value of the temperature of the hot water in the tank is determined by measuring the outlet water temperature. The mean temperature during this tapping is the reference hot water temperature θref according to:

θref=1

t40∫ θWH(t).dt

t40

0 (22)

where: θref is the reference hot water temperature in °C; θWH(t) is the hot water temperature in °C; t40 is the time between the start of tapping and the moment when θWH is less than 40 °C. The maximum volume of usable hot water that can be tapped in a single tapping must be determined. This value is determined by calculating the energy of the hot water during tapping. During tapping, the hot water flow rate, and the inlet cold water temperature, θWC, and the outlet hot water temperature, θWH, are measured at least every 10 seconds. The maximum volume of hot water, Vmax is calculated as follows:

Vmax=1

30K∫ V̇Tap.[θWH(t)-θWC(t)].dt

t40

0 (23)

where: Vmax is the maximum volume of usable hot water in m3;

θWH(t)-θWC(t) is the difference in temperature between the outlet hot water and the inlet cold water at the domestic hot water storage tank in K;

t40 is the time between the start of tapping and the moment when θWH(t) is less than 40 °C.


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A1.5 MAIN RESULTS

The following table shows the main results calculated according to Articles 2 and 3.

Results Symbol Unit

Heating-up time th h:min

Primary energy power input in stabilised mode Pes W

Tapping cycle used S, L, XL… -

DHW primary energy efficiency PEEDHW-PE -

Reference hot water temperature θref °C Maximum volume of usable hot water Vmax litre Volume of mitigated water at 40 °C V40 litre

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