certification reference standard for the mark

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

CERTIFICATION REFERENCE STANDARD FOR THE MARK

AFNOR Certification identification no.: NF 414 Revision 15 – 20/12/2018

(This version cancels and replaces any previous versions)

Approved by AFNOR Certification: 03/12/2018 Date of 1st application: 01/06/2007

Certification technical standard NF 414 Revision 15 – December 2018 Heat Pump - NF mark

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CONTENTS _________________________________________________________________________________

PART 1 ................................................................................................................................................................ 6

GENERAL PRESENTATION .................................................................................................................................... 6

SCOPE .................................................................................................................................................................. 6 CERTIFIED PERFORMANCE AND THRESHOLDS ................................................................................................................... 7 1.2.1 Certified performance ................................................................................................................................ 7 1.2.2 Performance thresholds ............................................................................................................................11 DEFINITIONS..........................................................................................................................................................14 PARTICIPANTS ........................................................................................................................................................18 1.4.1 EUROVENT CERTITA CERTIFICATION (ECC) .................................................................................................18 1.4.2 Audit body ................................................................................................................................................18 1.4.3 Test body/laboratories ..............................................................................................................................18 USE OF APPLICANTS’/HOLDERS’ LABORATORIES .............................................................................................................19 1.5.1 Authorisation request ...............................................................................................................................19 1.5.2 Authorisation approval and period ............................................................................................................20 1.5.3 Verification and renewal of the authorization ............................................................................................20 1.5.4 Inter-laboratory tests ................................................................................................................................20

PART 2 .............................................................................................................................................................. 21

REQUIREMENTS OF THE STANDARD ................................................................................................................. 21

REFERENCE DOCUMENTS ..........................................................................................................................................21 STANDARDS ..........................................................................................................................................................21 2.2.1 Test standards ..........................................................................................................................................21 2.2.2 Standards concerning the quality management system .............................................................................22 QUALITY MANAGEMENT PROVISIONS AND SPECIFIC REQUIREMENTS .....................................................................................22 2.3.1 Quality management provisions ................................................................................................................22 2.3.2 Requirements specific to products .............................................................................................................22 THE MARKING ........................................................................................................................................................25 2.4.1 Reference documents ................................................................................................................................25 2.4.2 The NF logo and the marking process ........................................................................................................26 2.4.3 Provision concerning the documentation ...................................................................................................27

PART 3 .............................................................................................................................................................. 28

CERTIFICATION PROCESS ................................................................................................................................... 28

HOW TO OBTAIN CERTIFICATION: THE ADMISSION PROCEDURE ..................................................................................28 3.1.1 Admission application ...............................................................................................................................28 3.1.2 Initial audit ...............................................................................................................................................29 3.1.3 Admission tests .........................................................................................................................................30 3.1.4 Software verification .................................................................................................................................40 3.1.5 Evaluation and decision ............................................................................................................................40 MAINTAINING THE CERTIFICATION: MONITORING PROCEDURES .................................................................................41 3.2.1 Follow-up of certified products and performance .......................................................................................41 3.2.2 Monitoring audit .......................................................................................................................................42 3.2.3 Monitoring tests .......................................................................................................................................42 3.2.4 Software verification .................................................................................................................................43 3.2.5 Evaluation and decision ............................................................................................................................43 STATEMENT OF CHANGES ..................................................................................................................................44 3.3.1 Changes concerning the holder .................................................................................................................44 3.3.2 Changes concerning production entities ....................................................................................................44 3.3.3 Changes concerning the quality organisation of the manufacturing and/or marketing process ..................44 3.3.4 Changes to the scope of certification: Additional Admission .......................................................................44 3.3.4.1. Additional admission for adding one or more products ...............................................................................45 3.3.4.2. Additional admission for adding a new range or a new plant ......................................................................45 3.3.5 Changes concerning the NF-certified product: Extension ............................................................................46


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3.3.6 Maintenance application ..........................................................................................................................47 3.3.7 Temporary or permanent cessation of production of an NF-certified product .............................................47 CONDITIONS FOR STOPPING MARKING OR REMOVAL OF THE MARK IN THE EVENT OF SUSPENSION, WITHDRAWAL

OR WAIVER .................................................................................................................................................................47

APPENDICES ...................................................................................................................................................... 47


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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: 01/06/2007

Part modified Revision

no. Date of

application Modifications made

- 0 01/06/2007 Creation of the application of the NF mark

All 1 20/03/2009 Overall revision of the Standard

Whole document 2 15/06/2010

Adaptation of the Standard:

• to swimming pool heat pumps,

• certification up to 100 kW,

• monitoring procedure for manufacturing units,

• test bodies,

• sound level threshold.

2 3 01/04/2011 Addition of a new temperature condition 22_25 °C


Integration of provisions of 2012 thermal regulations (RT 2012). Extension to reversible heat pumps (with cooling function).

Change of NF logo Document revision to permit better readability with: Creation of appendices A (elec.) and B (swimming pools) by product category (part 9) and appendices for special test methods (part 10)


Extension of scope to dual-mode heat pumps (C) and gas absorption (D) and gas IC engine-driven heat pumps (E): Transfer of standard sheets 2 to technical specification appendices.

Addition of test laboratory (AIT) for thermal testing (§ 5.3). Addition of a seat in the committee manufacturers panel (§ 5.5). Editorial clarifications.

All 6 23/10/2012 Appendix D, § D.4.1.1: Modification of downstream temperatures on RT 2012 matrix


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

Appendix C Technical: Adding of simulation of performance of dual-mode heat pumps.

Body of the

document 8 18/09/2014

Editorial: Reorganisation of the doc. (in particular creation of the introduction) and slight simplification for better readability Processes redesigned. Part 6 renumbered and partially reworded. Part 8 simplified (one hard copy for the files)

Appendix A Technical: Seasonal performance for electric HPs in heating mode, optional.

Body of the document

9 01/05/2015

Addition of domestic hot water application (1.1, 3.2.3.2, 3.5, 4.2.2, standard sheet 6B) Addition of AENOR audit body (5.2). Check-list updated at 8.1

Appendix A Editorial: Cdh becomes Cc Addition of glycol water heat pump with solar collector (A.1, A.5.2.6, standard sheet 2A)

Appendix C

Addition of heat pump with utility water tank Addition of the energy efficiency certification for water heating.

Addition of collective DHW application (C.1, C.2, C.4.3, C.5.1, C.5.5.3, C.5.5, C.6.1, C.6.2, standard sheets 2C and 6A)

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


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Appendices Editorial: Appendices BB, CC, and DD are merged into AB. Appendix EE is renamed AE.

Separation and renumbering of standard sheets 2 as 2, 2A, 2B, 2C, 2D, 2E.

Whole document

10

01/07/2016

Normative references updated

Rerating rules reworded and examples updated

Body Mark's laboratories updated; unique names of ranges Editor's comment: in auditing, "non-conformity" is used, in testing, "deviation"

Body and Appendix A

The follow-up tests are ordered by ECC, who chooses the laboratory where the machines are tested, invoiced on the expected delivery date of the sample. If one of the 2016 follow-up machines can be tested for seasonal performance, it is. Update of the table of seasonal performance conditions for air/water HPs.

Appendix C Minimum tolerance of 15W for reserve power

Appendix D Addition of seasonal performance as option for gas absorption HPs

Removal in D.4 of the reference to AE, as the tests are covered by EN12309

Appendix F Addition of gas external combustion engine-driven HPs

Appendix AE Update to cover only gas IC engine-driven HPs

Body and Appendix A

11 01/01/2017

Update of requirements for air/air HPs Note on ISO 9001:2015

The admission tests of HPs already on the market are managed by ECC. The relevant ranges must present seasonal performance for admission. Appendix A

Appendices A, D and F

Reduced sampling for seasonal performance when several applications are declared

Appendix C Updated tolerances for Pes, η and AEC

Appendix D Editorial corrections

Appendix F Normative update

Body § 5.3

12 01/07/2017

Updated list of NF HP mark laboratories

Appendix A Updated tolerances for seasonal performance; Addition of tolerances for part loads and

the corresponding rerating rule

Appendix C § C.3

Normative update (EN 16147: 2017, applying form the 2018 test campaign onwards)

Whole document

13 24/01/2018 Structure of the standard

New sampling rule

New provisions (Part 3).

§1.1

14 01/06/2018

Updated scope of the gas PACs

§2.2.2 Normative update

Annexe 3 Addition of NOx emission requirements

Update of the repository concerning the Gas PACs

§ 1.3

15 20/12/2018

Reference new website

§ 1.5 New rule for an authorized manufacturer laboratory

§ 2.2.2 Update of §

§ 3.1.3.3 Updated SCOP sampling rule and clarification

§ 3.1.3.6 A precision on the concentration and nature of the glycol

§ 3.1.3.8 New rerating rule

3.3 Simplification of complementary admission, extension and maintenance procedures

appendix 1 §F Adding heat pumps to CO2 - collective DHW

appendix 3 §A Update of the requirements for the Gas PACs

appendix 4 §2.2

Update on the characteristics of the connection duct


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Part 1 GENERAL PRESENTATION

Scope

This standard applies to heat pumps with a heating capacity less than or equal to 100 kW. However, for the case where the same product is able to work with either glycol water/water, the 100-kW capacity limit is applicable to the lowest power with the following exception:

• Air / Water PAC with absorption up to 140 kW (included).

The products covered by the certification standard are heat pumps (HP) belonging to the following categories:

• Electrically driven HPs for space heating, including appliances with a cooling function

• HPs with electric motor for heating swimming pool water, for seasonal and/or annual use, installed either outside or inside a building

• Electrically driven HPs covering both the above uses,

• Domestic hot water (DHW) HPs o Dual-mode HPs, i.e. designed for space heating and DHW production, o HPS used for a collective DHW production application that can operate exclusively

in DHW production mode without meeting heating needs,

• gas absorption HPs, including appliances with a cooling function,

• Gas internal combustion engine-driven HPs, including cooling function

• Gas external combustion engine-driven HPs, including cooling function

In the case of heat pumps with separate components, the assembly of such components is deemed to be an inseparable system for determining the certified performance.

Electric motor heat pumps for space heating and cooling

- “outdoor air/recycled air” type, - “Glycol water”/water on solar collector «type

- “exhaust air/fresh air” type, - “(ground)water/water” type, - “outdoor air/water” type, - “ground/ground” type, - "exhaust air/water” type, - “ground/water” type, - “(ground)water/recycled air” type, - “water/ground” type, - “water (loop)/recycled air” type, - “outdoor air/ground” type - “glycol water/water or glycol water on geothermal

collector” type •

For a split or multi-split range, only combinations (of the outdoor unit and indoor unit(s)) reaching a heating capacity in the range of 80 to 120 % of the outdoor unit heating capacity during operation may be admitted for the NF mark.

HPs with electric motor for heating swimming pool water, for seasonal and/or annual use, installed either outside or inside a building.

• "outdoor air/swimming pool water" type,

• "(ground)water/swimming pool water" type,

• "glycol-water mix/swimming pool water" type,

• "ground/swimming pool water" type.

Heat pumps with compressor driven by electric motor, capable of producing domestic hot water, (stored volume of water less than or equal to 2,000 litres)

• HPs known as dual-mode (Dual-mode HPs) i.e. intended for space heating and domestic hot water production (DHW). The products covered are characterised by their operating mode and include:


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o Simultaneous operation HPs, i.e. appliances capable of simultaneously carrying out space heating or cooling and domestic hot water production,

o Alternating operation HPs, which perform each of the two functions in alternation and are not suitable for simultaneous operation.

• HPs for collective domestic hot water production for a stored volume of water strictly greater than 400 litres, operating exclusively in domestic hot water production mode.

Note: HP certification scope is limited to heat production and does not cover heat distribution.

Absorption heat pumps for space heating, including appliances with a cooling function (reversible)

• “outdoor air/water” type,

• “glycol-water/water mix or glycol-water”,

• “(ground)water/water” type,

Gas internal combustion (IC) engine-driven heat pumps for space heating, including appliances with a cooling function (reversible)

The cooling function can only be certified with the space heating function.


• “outdoor air/recycled air” type

•

External combustion (IC) engine-driven heat pumps for space heating, including appliances with a cooling function (reversible)


• “glycol-water/water mix or glycol-water”,

• “(ground)water/water” type,

Certified performance and thresholds

1.2.1 Certified performance

1.2.1.1 Electric motor HPs for space heating and cooling

Heating mode

The energy performance in heating mode is certified:

o coefficient of performance (COP) o heating capacity (Ph) o electric input power (Pe)

Acoustic

o Sound power level

Variable power regulation HPs

The specific performance of variable power regulation HPs can be certified as the applicant/holder chooses:

o minimum load rate in continuous operation (LRcontmin) o COP at LRcontmin o the performance correction coefficient at LRcontmin (CcpLRcontmin)

Cooling mode

o cooling efficiency (EER) o cooling capacity (Pc) o electric input power (Pe)

The cooling function can only be certified with the space heating function.

Auxiliaries

The following cooling performance can be certified as the applicant/holder chooses: o share of electrical power for the auxiliaries (rate)


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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.

Seasonal heating performance

The following seasonal performance levels of air/air, air/water, water/water and glycol water-water heat pumps must be certified in heating mode at least for an average climate, as well as for other climates, as the applicant/holder chooses:

o seasonal performance coefficient SCOP o net seasonal performance coefficient SCOPnet o seasonal energy efficiency ηs

Note: ηs without the revaluation factor (which depends on the control temperature class)

HP air/water, water/water, glycol water/water or outdoor air/recycled air, for each chosen climate the applicant/holder must declare (and for heating and/or cooling modes in the case of air-air HPs):

• the rated thermal power Pdesignh, which defines the thermal load at Tdesignh that the product can fulfil

Note: Pdesignh is in our case equal to Prated at Tdesignh, also denoted as Prated.

• part load capacities and COPs at A, B, C and D points of standard EN 14825 (see §A.3);

• for air/air HPs declared in cooling mode, the part load capacities and EERs at points A (100 %), B (74 %), C (47 %) and D (21 %) of standard EN 14825

• Bivalent temperature Tbiv

Note: In cold climate, Tbiv ≤ -7°C; in average climate Tbiv ≤ +2°C and in warm climate Tbiv ≤ +7°C

• Limit operating temperature TOL

Note: In cold climate TOL ≤ -15°C; in average climate TOL ≤-7°C and in warm climate TOL = +2°C

• Capacities and COP at Tbiv

• Capacity and COP at TOL. If TOLdeclared < -10 °C, capacities and COP must not be declared at TOL but at -10 °C.

• Auxiliary powers Psb, Pto, Poff and Pck

• Capacity and COP on a cyclic interval Pcych, COPcyc and the degradation coefficient Cd for each point for which the heat pump is in “on/off” mode.

• If Cd is not entered, it is equal to the default value 0.25 for air/air HPs and 0.9 for other types of HP.

Note: Cd is called Cdh in the ErP regulation 813/2013.

The influence of Cd on the SCOP global calculation is trivial compared to the tolerance on the SCOP

If the declared Cdh or Cdc is different from the default value, it shall be measured for the points concerned.

• Seasonal performance coefficient SCOP, active SCOPon and net SCOPnet

• Seasonal energy efficiency ηs

Seasonal cooling performance

The following seasonal performance levels of air/air, air/water, water/water and glycol water-water heat pumps can be certified in cooling mode as the applicant/holder chooses:

o seasonal performance coefficient (SEER)

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

Special characteristics of variable capacity regulation HPs

The manufacturer shall send the laboratory the means for obtaining the minimum continuous operation load ratio from his 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 heating capacity / Heating capacity declared and/or measured under pivot point conditions


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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 heating capacity 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, CcpLRcontmin is then calculated and validated, as follows: CcpLRcontmin = COP at LRcontmin / COP at pivot point

1.2.1.2 Swimming pool HPs

The certified characteristics are:

• The Coefficient of Performance (COP),

• The heating capacity,

• The power input,

• The sound power level.

1.2.1.3 Collective dual-mode & DHW HP alone

Performance must be certified at average climate conditions (e.g. +7 °C for air/water HPs) and optionally performance under cold and warm climate conditions (e.g. +2°C and +14°C for air/water HPs).

• The certified performance are: o The heating-up time (th) o The spare capacity (Pes)

o The reference hot water temperature (’WH) o The volume of mixed water at 40°C (V40) o Daily consumption for the draw-off cycle in question (Qelec) o Annual consumption (AEC = Qelec x 366 x 0.6).

Note: Qelec and AEC to be included for applications submitted after the date of application of revision 9 of the Certification Standard.

• Moreover, for simultaneous operation HPs: o The global performance coefficient for a given tapping cycle (COPglobal).

Note: The global performance coefficient is defined as the ratio of the total effective energy for the heating and domestic hot water (DHW) functions to the total energy absorbed for both functions carried out simultaneously.

• Furthermore, for alternating operation HPs: o The performance coefficient in DHW production mode (COPDHW) for a given

tapping cycle, o energy efficiency for water heating (ηWH)

Notes: ηWH for any applications submitted after the date of application of the Certification Standard (revision 9). Not required when the performance of a collective domestic hot water production system are given item by item.

• Moreover, for Collective domestic hot water production HPs: o The reheating time (tR)

o The proportion of renewable energy (ENR =COPDHW-1

COPDHW).

1.2.1.4 gas absorption HPs

The certified performance levels are:

• Gas utilisation efficiency GUEh [kW/kW]

• Rated heating capacity QNh [kW]

• The effective power input PE [kW]

• The sound power level Lw [dB(A)].

Optionally, the following performance can be certified:

• The particular characteristics of variable capacity regulation HPs: o The minimum continuous operation Load Ratio, LRcontmin [%]


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o The GUE at LRcontmin [kW/kW] o The performance correction coefficient at LRcontmin, CcpLRcontmin [-]

• The electrical power of the auxiliaries at zero load Paux0 [W]

• Seasonal performance in heating mode at least for an average climate, chosen by the applicant/holder for cooling modes and for the other climates:

o The reference seasonal gas utilisation efficiency in heating mode SGUEh [kWh/kWh]

o The reference seasonal efficiency in cooling mode SGUEc [kWh/kWh] o The reference seasonal primary energy efficiency in heating mode SPERh

[kWh/kWh] o The reference seasonal primary energy efficiency in cooling mode SPERc

[kWh/kWh] o Seasonal energy efficiency ηs = SPER x 100 - |F(1)| - |F(2)| [%] [EN 16905]

Note: ηs without the revaluation factor F(3) (which depends of the temperature control class)

Additionally, for the cooling function, the following characteristics can also be certified:

• Gas utilisation efficiency GUEc [kW/kW]

• Rated cooling capacity QNc [kW] The cooling function can only be certified with the space heating function.

1.2.1.5 Gas IC engine-driven HPs


• The gas utilisation efficiency (GUE),

• The heating capacity,

• The power input,

• The sound power level.

The following characteristics can be optionally certified:

• The particular characteristics of variable capacity regulation HPs: o The minimum continuous operation Load Ratio (LRcontmin), o The GUE at LRcontmin. o The performance correction coefficient at LRcontmin (CcpLRcontmin),





[kWh/kWh] o Seasonal energy efficiency ηs = SPER x 100 - |F(1)| - |F(2)| [%] [appendix G of

EN 12309-6]

• The electrical power of the auxiliaries at zero load (Paux0)

• Additionally, for the cooling function, the following characteristics can also be certified: o The gas utilisation efficiency (GUE),

The cooling power.

1.2.1.6 Gas EC engine-driven HP


• Gas utilisation efficiency GUEh [kW/kW]

• The heating capacity QNh [kW]

• The effective power input PE [kW]

• The sound power level Lw [dB(A)].

Optionally, the following performance can be certified:

• The particular characteristics of variable capacity regulation HPs: o The minimum continuous operation Load Ratio, LRcontmin [%]


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o The GUE at LRcontmin [kW/kW] o The performance correction coefficient at LRcontmin, CcpLRcontmin [-]

• The electrical power of the auxiliaries at zero load Paux0 [W]





[kWh/kWh] o Seasonal energy efficiency ηs = SPER x 100 - |F(1)| - |F(2)| [%] [appendix G of

EN 12309-6] Note: ▪ The correction factor F (1) represents a negative contribution to the seasonal space heating

energy efficiency of heating appliances ▪ The correction factor F (2) represents a negative contribution to the seasonal space heating

energy efficiency due to the electricity consumption of the pump(s) required to circulate the heat transfer fluid between the heating appliance and the source of ambient heat (geothermal, hydraulic or solar) and is expressed in%.

▪ ηs without the revaluation factor F (3) (Correction factor F (3) represents a positive contribution to the seasonal space heating energy efficiency for monovalent or bivalent gas-driven sorption heat pump based heating appliances)

Additionally, for the cooling function, the following characteristics can also be certified:

• The gas utilisation efficiency GUEc [kW/kW]

• The cooling capacity QNc [kW] The cooling function can only be certified with the space heating function.

1.2.2 Performance thresholds

1.2.2.1 Energy performance levels in heating mode and cooling mode

COP thresholds are set for certain operating points.

Energy performance levels in heating mode must be determined in the conditions stated below each table (see APPENDIX 1). The corresponding tables are provided in APPENDIX 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.

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

1.2.2.2 Sound power level

Electric HPs

Sound power thresholds are set for certain HP heating capacity levels.

If the seasonal performance option is chosen, the sound power shall be declared for the main application chosen (47/55 °C or 30/35 °C) at rated point +7 °C, necessarily in average climate and the other climates if applicable.

Sound power levels must be determined under the conditions set out in APPENDIX 4 of this certification standard. Outside the building, they must comply with the following thresholds:

Heating capacity P [kW]

Sound power at Prated Lw [dB(A)]

For information only: Thresholds of Rules 813/2013 Sound power level at the rated

heating capacity Pdesignh LwA [dB(A)]

Indoor Outdoor

0 P ≤ 6 ≤ 70 60 65


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6 P ≤ 10 65 70

10 P ≤ 12 ≤ 73

12 P ≤ 20 70 78

20 P ≤ 30 ≤ 78

30 P ≤ 50 80 88

50 P ≤ 70 No threshold defined


Table of sound thresholds

Swimming pool HPs

Sound power levels must be determined under the conditions set out in APPENDIX 4 of this certification reference standard. Outside the building, they must comply with the following thresholds:

Heating capacity [in kW] Sound power [in dB(A)]

0 capacity ≤ 10 ≤ 70

10 capacity ≤ 20 ≤ 73

20 capacity ≤ 50 ≤ 78

50 capacity ≤ 100 No threshold defined

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.

For multi-split heat pumps, if the measured sound power level of one or more combinations exceeds the declared level by more than 2 dB(A), the certification file will be presented to the Special Committee and the reduction to apply to all the combinations will be studied on a case-by-case basis, depending on the deviations observed and the number of combinations.

Gas absorption HPs

Sound power levels must be determined under the conditions set out in APPENDIX 4 of this certification standard. Outside the building, they must comply with the thresholds in the table below:


Heating capacity

P [kW]

Thresholds (identical to Rules 813/2013)

Sound power level at the rated heating

capacity Pdesignh

LwA [dB(A)]

Indoor Outdoor

0 P ≤ 6 60 65

6 P ≤ 10 65 70

10 P ≤ 12

12 P ≤ 20 70 78

20 P ≤ 30

30 P ≤ 50 80 88

50 P ≤ 70


Gas IC engine-driven HPs

Sound power levels must be determined under the conditions set out in APPENDIX 4 of this certification standard. Outside the building, they must comply with the following thresholds:

Heating capacity [in kW] Sound power [in dB(A)]

0 capacity ≤ 10 ≤ 70

10 capacity ≤ 20 ≤ 73


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20 capacity ≤ 50 ≤ 78

50 capacity ≤ 100 No threshold defined

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 rerated on the basis of the deviation observed on the tested product, between the declared sound power value and the test report result.

Gas EC engine-driven HP

Sound power levels must be determined under the conditions set out in APPENDIX 4 of this certification standard. Outside the building, they must comply with the thresholds in the table below:


If the seasonal performance option is chosen, the sound power must be declared for the main chosen application (low, average, high, or very high temperature) at the rated point at +7 °C (air/water), 0/-3 °C (glycol water/water) and at 10/7 °C (water/water) necessarily at average climate and the other climates if applicable.

Heating capacity

P [kW]

Sound power at Prated Lw [dB(A)]

For information only: Thresholds of Rules 813/2013 Sound power level at the rated heating capacity Pdesign h

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

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

Dual-mode HPs

• Heating-up time th: o not more than 6 hours in alternating mode o not more than 8 hours in simultaneous mode,

• Maximum volume of usable hot water VMAX: greater than 1.2 x Effective volume of water Ve

• Reference temperature ’WH ≥ 52.5 °C (where applicable in 2012 Thermal Regulation)

Note: VMAX and WH mandatory thresholds for applications submitted up to revision 8 of the Certification Standard.

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

• Draw-off mode

• M • L • XL

• V40min [litres]

• 65 • 130 • 210

Note: For applications submitted from revision 9 of the certification standard.

Collective domestic hot water

• Heating-up time th: 24 hours maximum

Note: No threshold for reheating time tR.

• Reference temperature θ'WH ≥ 52.5 °C (where applicable in 2012 Thermal Regulation)

• Volume of mixed water at 40 °C V40 minimum:

• Draw-off mode

• 2XL • 3XL • 4XL


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• V40min [litres]

• 300 • 520 • 1040

• Electric auxiliary heating WA: 15 VN W maximum

• Electric auxiliary power flux WAsurf: 16 W/cm2 maximum

Definitions

The provisions set out in the NF general standard (§ 1.4) apply. The table below provides additional information specific to the NF414 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.

Any contractual relationships existing between the applicant/holder and the various service providers to which it contracts out one or more requirements covering the following steps: design, manufacture (with the exception of product components), assembly, inspections, marking and packaging, must be subject to a contract as specified in APPENDICES 7, 8, 9 and 10. 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 APPENDICES 7, 8, 9 and 10).

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 that case, an application shall 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 that case, an application shall be submitted to maintain the right of use.

Certified products

The list of certified products and their information are available on the www.certita.fr website, www.eurovent-certification.com 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

On request, ECC provides the following information concerning the validity of a particular certification.

Range of appliances

Electric HPs

A heat pump range comprises products with the same components, namely:

• Same refrigeration process (for example, number of compressors or stages, etc.)

• same refrigerant

• same compressor type

• same expansion valve type

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• same evaporator type

• same condenser type

• same defrosting principle (4-way valve or vapour injector)

• same power regulation principle (refrigerant performance management)

For a split or multi-split range, the outdoor unit is characterised by the aforementioned components and the indoor units by the following components:


• same fan type

• same expansion valve type (if included in the indoor unit)

• same return and discharge section geometries

• same regulation principle

• same casing type

• same assembly type (apron wall, wall, ceiling, etc.).

• same type of swimming pool exchanger for swimming pool HPs

HPs available in the standard version (heating only) or reversible version (heating and cooling) must have two different range names.

Two different ranges are considered in the following cases. The applicant must then complete separate applicant files for each range:

• For heat pump which are available in standard version (heating only) or reversible (heating and cooling) and having different trade names from one version to another

• For heat pumps that can be installed (as is or with optional equipment) indoors or outdoors

A heat pump that exists with single-phase and three-phase power supply constitutes two models in the same range. In this case, names (or commercial references) of the models should allow their differentiation.

Heat pumps with integrated options constitute different models if such options have an impact on the certified performance.

Special cases:

• For technological reasons, it can prove necessary to change compressor technology within a range. One or two products may therefore be added.

• For heat pumps that can be installed (as they are or with optional equipment) indoors or outdoors, these will be viewed as two product ranges but a single heating capacity measurement will be taken if the pressure in the duct is less than 25 Pa and two heating capacity measurements will be taken if the pressure in the duct is greater than 25 Pa.

• For a range of appliances offering options incorporated into the heat pump, these constitute different ranges if such options have an impact on the certified features of the heat pump. In this case, the applicant shall complete separate applications for the right to use the NF mark.

Dual-mode HPs:

The main systems covered are listed in APPENDIX 2. Other types of systems may be certified, but should undergo an assessment by CERTITA prior to the application for certification.

• A simultaneous operation dual-mode heat pump is a system composed of:

• a heat pump,

• a storage tank (incorporating an exchanger if applicable),

• a control system,

• accessories.

• An alternating operation dual-mode HP is a system composed of:

• a heat pump,

• a storage tank,


• if applicable, a hydraulic circuit switching component (e.g. 3-way valve),

• one or more circulation pump(s), if applicable,


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• if applicable, an intermediate exchanger,

• accessories.

Gas absorption HPs

A gas absorption heat pump system consists of the following components:

• a boiler (generator)

• a gas burner and the components required to supply the combustion air and discharge the combustion products

• a refrigeration circuit

• a condenser

• an expansion device

• an evaporator

• an absorber

• a solution pump

• a control system

• exchanger(s), if applicable (enriched solution / depleted solution)

An absorption heat pump range comprises products with the same components, namely:

• same refrigeration process (e.g. GAX type absorption)


• same boiler (generator) type



• same absorber type

• same solution pump type


• same defrosting principle (hot gas injection valve)

• same power regulation principle (e.g. burner power modulation)

• same exchanger type (enriched solution/depleted solution) Special case:

• Options incorporated into the heat pump constitute different ranges if such options have an impact on the certified performance of the heat pump. In that case the applicant shall complete separate application files, making sure that the range names are unique.

• A heat pump range with reversible (heating and cooling) and standard versions (heating only) and for which the commercial references or brands are different (from one version to the next) is considered as two ranges. Tests shall be performed according to the following cases:

o The certified characteristics stated in the applications are the same for both versions; only the products in the reversible version are submitted for testing.

o The certified characteristics stated in the applications are different for both versions; in this case, the products in each version are submitted for testing.

Note: If both versions have the same commercial references or brands and the same stated certified characteristics, only one range is taken into consideration. The tests are carried out on the reversible version products of the range.


An IC engine-driven gas heat pump system consists of the following components:

• a gas heat engine

• a heat sink

• one or more compressor(s)

• a refrigeration circuit

• a condenser

• an expansion device

• an evaporator

• a control system


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An IC engine-driven gas heat pump range comprises products with the same components, namely:

• same refrigeration process (for example, number of compressors or stages)


• same heat engine type

• same compressor type


• same heat recovery unit type



• same defrosting principle (hot gas injection valve)

• same power regulation principle (refrigerant performance management)

• same heat recovery regulation principle

Special case:

• For a range of appliances offering options incorporated into the heat pump, these constitute different ranges if such options have an impact on the certified features of the heat pump. In this case, the applicant shall complete separate applications for the right to use the NF mark.


a- The certified characteristics stated in the applications are the same for both

versions; only the products in the reversible version are submitted for testing.

b- The certified characteristics stated in the applications are different for both

versions; in this case, the products in each version are submitted for testing. Comment: If both versions have the same commercial references or brands and the same stated certified characteristics, only one range is taken into consideration. The tests are carried out on the reversible version products of the range.

Gas EC engine-driven HPs:

An external combustion compressor-driven gas heat pump system consists of the following components:

• a regenerative compressor,

• a gas cooler,

• a refrigeration circuit,

• an expansion device,

• an evaporator,


• a heating element with burners and the components required to supply the combustion air and discharge the combustion products,

• a condenser exchanger for combustion products including auxiliary gas.

An external combustion compressor-driven gas heat pump range comprises products with the same components, namely:

• same refrigeration process


• same regenerative compressor type

• same gas cooler type



• same defrosting principle

• same power regulation principle (e.g. burner power modulation)

Special case:

• Options incorporated into the heat pump constitute different ranges if such options have an impact on the certified performance of the heat pump. In that case the applicant shall complete separate application files, making sure that


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the range names are unique.


o The certified characteristics stated in the applications are the same for both versions; only the products in the reversible version are submitted for testing.

o The certified characteristics stated in the applications are different for both versions; in this case, the products in each version are submitted for testing.

Note: If both versions have the same commercial references or brands and the same stated certified characteristics, only one range is taken into consideration. The tests are carried out on the reversible version products of the range.

Participants

1.4.1 EUROVENT CERTITA CERTIFICATION (ECC)

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 E-mail: [email protected] & [email protected]

1.4.2 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 Email: [email protected]

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 Email: [email protected]

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

1.4.3 Test body/laboratories

Each test (except those carried out in an "NF authorised" laboratory, see 1.2.4) is carried out at ECC’s request in the following laboratory, called the mark laboratory:

AIT*

Österreichisches Forschungs – und Prüfzentrum Arsenal Ges.m.b.H

Giefinggasse 2 1210 Vienna - Austria : +43 50550-6509 : +43 50550-6679

www.ait.ac.at

*Thermal tests only (not sound tests)

CEIS Ctra. Villaviciosa de Odòn a Mόstoles

km 1.5 28935 Mόstoles MADRID - SPAIN

: + 34 91.616.97.10 : + 34 91.616.23.72

www.ceis.es - [email protected]

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]

HLK

HLK Stuttgart GmbH Pfaffenwaldring 6 A

D-70569 Stuttgart - GERMANY

IMQ Via Jacopo Linussio 1

33020 Amaro (Udine) - ITALY : +39 0433 468607

LNE 29 avenue Roger Hennequin

F-78197 TRAPPES Cedex - FRANCE : + 33 1 30 69 10 00

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

http://www.certita.fr/

mailto:[email protected]


http://www.certita.org/


http://www.aenor.es/


http://www.lne.fr/


http://www.sp.se/

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: +49-711-685-69410

: +49-711-6876056

www.hlk-stuttgart.de

: +39 0433 469042 www.imqclima.it - [email protected]

: + 33 1 30 69 12 34 www.lne.fr - [email protected]

RISE

Technical Research Institute of

Sweden

Energiteknik / Energy Technology Box 857, SE-501 15 Borås, SWEDEN

: +46 10 516 50 00 : +46 33 13 19 79

www.sp.se - [email protected]

SZU

Strojírenský zkušební ústav, s.p.

(SZU), Hudcova 424/56b,

CZ-621 00 Brno Czech Republic : +420,541,120,453 : +420 541 211 225

www.szutest.cz – [email protected]

WPZ Wärmepumpen-Testzentrum WPZ

Interstaatliche Hochschule für Technik Werdenbergstrasse 4

CH-9471 Buchs SG - SWITZERLAND : +41 81 755 34 02 : +41 81 755 34 40

www.wpz.ch - [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. The follow-up tests are managed by ECC and will be performed in a laboratory of the brand.

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.

1.5.1 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

. address to ECC a request and the complete file, in 1 copy as well as the test protocol.

. 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;

ECC orders the test at the chosen 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

http://www.hlk-stuttgart.de/

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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).

1.5.2 Authorisation approval and period

ECC examines the application, verifies that it is complete and gives the authorization, refuses it by stating the reasons, or defers its decision by prescribing a further investigation.

Validation of the results

- A comparison will be made between the values declared by the manufacturer and the values measured by the independent laboratory in accordance with Part 3. If the results are non-compliant, the values will be recatalogued according to the recatalogging rule.

- A comparison shall be made between the measured values, the sum of all the measurements made on one machine at all the test points (acoustic, heating and DHW), by the manufacturer's laboratory and the independent laboratory in accordance with the tolerance defined in the part 3. If more than 10% (strictly greater than 10%) of the total number of points measured by the authorized laboratory are different from the values measured by the independent laboratory, the results of the inter-comparison will be considered as non-compliant.

Condition of agreement

- If the results of the inter-comparison are in conformity, ECC pronounces the authorization.

- If the results are non-compliant, a technical analysis must be done by the applicant in collaboration with the laboratory. Pending the results of the applicant's analysis, the authorization procedure is suspended. Depending on the relevance of the analysis, a second inter-comparison trial may be allowed. The second intercomparison trial must be performed within 6 months. Depending on the results of the second test, authorization may be granted or refused.

Authorization period

ECC will set the duration of the authorization. The authorization may be valid for a maximum of two years.

1.5.3 Verification and renewal of the authorization

§1.5.2 remains valid for the monitoring and renewal of the authorization.

The authorized laboratory regularly informs ECC of the verifications carried out by the accreditation body and of the decisions taken by the latter as part of the follow-up of its accreditation.

This information, as well as the results of the audits carried out within the framework of these Referential ("systematic" and other checks) are examined by ECC which can, in their light propose to renew, renew, suspend or withdraw the authorization for all or part tests.

Any suspension or withdrawal of the accreditation, in whole or in part, must lead to a re-examination of the laboratory's situation vis-à-vis the mark. ECC rules in the light of the investigation carried out by the accreditation body and the reasons for the refusal of accreditation.

It lays down the conditions for this eventual retention, indicating the verifications that must be made.

1.5.4 Inter-laboratory tests

Each year, the accredited laboratory of a applicant / holder and one of the laboratories of the mark carry out standardized tests on 1 device presented at admission or taken for this purpose. The reports of these tests are sent to ECC for comparison of the results. In the event of an anomaly, the managers of the two laboratories, under the control of ECC, will have to implement the appropriate corrective actions.

§1.5.2 remains valid for the monitoring and renewal of the authorization.


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For holders with an "authorized NF" laboratory (§1.5), one of the two products sampled must be compared with a laboratory of the brand.

The tests carried out by the independent laboratory are the responsibility of the applicant / holder. ECC is responsible for monitoring these tests.

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 reference standard 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.

2.2.1 Test standards

Electric compression heat pump

• 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 14511 (2018) can be applied in 2018 and will be mandatory from 2019. Note: Swimming pool heat pumps do not fall within the scope of standard EN 14511; however, it is used to determine the performance of the appliance.

• 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.

• EN 15879-1 (April 2011): Testing and rating of direct exchange ground coupled heat pumps with electrically driven compressors for space heating and/or cooling - Part 1: Direct exchange-to-water heat pumps.

• Standards relating to sound tests (see APPENDIX 4).

• The standby electrical power (Psb) is measured with the appliance in standby mode according to the provisions of standard EN 14825.

• EN 16147 (2017) is mandatory from 2018 admission/extension tests and 2018 follow-up tests

• EN 15332 (February 2008) – Heating boilers – Energy assessment of hot water storage systems.


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Acoustic

• EN 12102-1 (November 2017): Air conditioners, heat pumps and dehumidifiers with electrically driven compressors. Measurement of airborne noise. Determination of the sound power level.

• ISO 3741 (Feb. 2012): Determination of sound power levels emitted by the noise sources – Laboratory methods for broad-band sources in reverberation rooms.

• ISO 9614-1 (November 2009): Acoustics – Determination of sound power levels of noise sources using sound intensity – Part 1: measurements by points

Gas absorption HPs

• EN 12309: Gas-fired absorption and adsorption air-conditioning and/or heat pump appliances with a NCV not exceeding 70 kW

o Part 1 (February 2015): Terms and definitions o Part 2 (August 2013): Safety o Part 3 (February 2015): Test conditions o Part 4 (February 2015): Test methods o Part 5 (February 2015): Requirements o Part 6 (February 2015): Calculation of seasonal performance




Gas EC engine-driven HP



2.2.2 Standards concerning the quality management system

ISO 9001:2008 (and subsequent revisions)

Except §8.3

Quality management systems – Requirements.

As of September 15, 2018, the provisions of ISO 9001: 2015 will apply.

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

Quality management provisions and specific requirements

2.3.1 Quality management provisions

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

2.3.2 Requirements specific to products

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


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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 9.

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 9 will also have to be documented.

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

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.

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.


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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 must be carried out to ensure the compliance and presence of the marking on the certified product, as defined in §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 certified characteristics/performance levels and bear the NF logo (as defined in §2.4), before they are released. 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.

2.3.2.4 Additional specifications

In addition, for a swimming pool HP and with regard to:

• hydraulic circuit leak tests (§2.3.2.2.2), the manufacturer shall perform a leak test at no less than 1.3 times the maximum permissible pressure (Ps) to ensure that there are no leaks, documentation control (§..2.3.2.3.5): the general terms of sale must include the (5-year) guarantee against corrosion for the swimming pool exchanger and all parts in contact with the swimming pool water. This provision must be verified and be subject to a record.

• For swimming pool heat pumps for which the NF mark has been obtained with an additional exchanger, the holder shall include in the installation and user manual a copy of the certificate of right of use of the NF mark, identifying the exchanger.

• If appropriate, the installation and user manual must state that the product is intended for seasonal use.

In addition, for a dual-mode and collective DHW HP:

See APPENDIX 2- §3

The audit of the tank production plant must be carried out prior to the issue of the certificate even for a range of dual-mode heating only.

Note: For applications submitted from revision 10 of the certification standard.

The manufacturer must ensure the following requirement, which is checked during the audit (checking of the labels of fluids in the plant and document control):


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• Type of refrigerant fluid and its GWP (according to the reference quoted in F-Gas IPCC 4 regulations), load [Kg and teqCO2] and other items required for F-Gas regulation compliance (French application decree to be published at the beginning of 2015).

The manufacturer shall monitor and measure the product performance to verify that product requirements are met.

The following checks are conducted:

• by the manufacturer,

• by an identified subcontractor.

Within the scope of the NF Mark, the inspection plan implemented must at least consist of the tests and checks listed in the tables below.

For the collective DHW application, the manufacturer shall ensure the following requirements, with are checked during the audit:

• Tank with a 5-year guarantee according to the manufacturer's General Warranty Terms and Conditions.

• Requirements regarding the installation and operating manual of the system (and/or system components):

o Anticorrosion system, if needed and provisions/instructions regarding this system, o Electric auxiliary power WA and electric auxiliary power flux WAsurf o Information on items to be implemented regarding compliance with sanitary

regulations (in particular Decree of 30 November 2005 published in the Official Journal on 15 December 2005)

Note: the contractor is responsible for compliance with this regulation.

In addition, for a gas (absorption, IC and EC-engine) HP:

In addition, for this category of heat pumps and for the hydraulic circuit leak tests (§2.3.2.2.2), the manufacturer must carry out a leak test at no less than 0.8 times the maximum permissible pressure (Ps) to ensure the absence of leaks.

The marking

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.

2.4.1 Reference documents

2.4.1.1 The French Consumer Code

The provisions set out in the general standard apply.

2.4.1.2 General rules of the NF Mark


http://www.legifrance.gouv.fr/jo_pdf.do?cidTexte=JORFTEXT000000423756

http://www.legifrance.gouv.fr/jo_pdf.do?cidTexte=JORFTEXT000000423756


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2.4.2 The NF logo and the marking process

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):

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.

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.

2.4.2.1 Marking of the certified product

The NF logo shall be permanently and indelibly affixed to the thermodynamic device for which the right to use the NF-HP mark has been obtained. 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 prevent possible redrafting, it is recommended to submit any such documents to ECC for review.

The marking of the product must comply with the logo shown in §2.4.2.

http://www.certita.org/


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For splits, the NF logo shall be affixed to the outdoor and indoor units. 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 obtained; no NF logo shall be affixed. In such cases, the holder shall make the following wording appear on the indoor and outdoor unit rating plates “Combinations admitted for the NF mark: see installation and user manuals”.

The draft wording of the rating plates for the range must be provided on admission of a range. In the case of extensions, the plates are not systematically verified if no major modifications have been made to the range (e.g.: product modifications); in such cases, they can be inspected after the updated certificate has been issued.

2.4.2.2 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.

2.4.2.3 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 §2.4.2.1.

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.

2.4.3 Provision concerning the 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 standard ISO 5149-2:2014 to define the installer's obligations.

- For heat pumps using ground water and for which the certified characteristics have been determined without barrier exchanger, the holder shall 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 heat pumps that cannot be marked with the NF logo as defined in §2.4.2.1, the holder shall produce a specific chapter entitled "combinations permitted for the NF mark" that reproduces the certificates of right of use of the NF mark.

- 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.

- For multi-application heat pumps, of which not all of the applications are admitted for the NF mark, the installation and user manual must state the applications for which the product benefits from the NF mark.


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Part 3 CERTIFICATION PROCESS __________________________________________________________________________________ Application for the right to use the NF mark must be drawn up in electronic version,

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 trademark, a sales reference specific to the product presented and its technical characteristics;

The operating ranges for each HP are declared by the applicant/holder and can be all or part of the performance table points in APPENDIX 1 (taken from the RT 2012 Heating Regulations where applicable). The applicant/holder must declare at least one operating point.

Intermediate operating points (corresponding to intermediate columns of the matrices) relative to those provided by the performance matrices below can be declared for certification.

The lower upstream temperature limit is set at -15°C for outdoor air. Operating points at temperatures higher than those provided by the matrices can be declared.

As a minimum for the heating function, a declared point must correspond to an operating point with a COP threshold defined specified in the tables (APPENDIX 1).

For any application received after 1st 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).

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

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

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

From 2017, any application concerning an air/water, water/water, glycol water/water or air/air range, apart from exclusively collective DHW HPs, must include the declaration of seasonal performance according to the provisions below.

Air/water, water/water or glycol water/water HP

A holder who has certified at least one air/water, water/water or glycol water/water range must declare seasonal performance for the range sampled for seasonal tests by ECC.

For each HP concerned, the applicant/holder must choose one or two applications from among the following:

- if the appliance is declared as “Low temperature” HP: +35° C application mandatory - if not, “High temperature”: +55°C application is mandatory, with the +35°C application optional

- For each model, he must choose 1 operating mode from among the possible water regulation settings:

✓ fixed water flow / fixed water output temperature ✓ fixed water flow / variable water output temperature ✓ variable water flow / fixed water output temperature ✓ variable water flow / variable water output temperature

The applicant/holder shall declare the RT 2012 pivot point, rated point for Tupstream = +7(6) °C for air/water heat pumps, 10 - 7 °C for water/water heat pumps, 0 - -3 °C for glycol water/water heat pumps.

Note: This point coincides with the rated point of EN 14511


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For variable flow machines, it is not necessary to perform the so-called "nominal EN14511" test to determine seasonal performance.

Documents to be completed / provided are:

- Excel declaration form provided by ECC,

- Electrical diagram,

- Nameplate,

- Catalog.

The inspections carried out for the NF mark are generally of two different types:

• Audits conducted during visits to the production units;

• Tests on the submitted products.

3.1.2 Initial audit

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

The audit will last at least one day.

The audit of the assembly site lasts at least one half-day.

This inspection serves to ensure that the provisions defined and implemented by the applicant during the audited design and/or manufacturing and or marketing process meet the corresponding requirements of part 2 of these certification rules.

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.

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.

Samples may be identified and/or taken during the visit for examinations or tests.

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

For each audit, an audit report is prepared and sent to the applicant. Each report that has a non-conformity requires an answer within a time frame indicated in the report and/or its cover letter.

The tables below recap the various cases requiring an audit:

- Case 1: 100 % OEM (original equipment manufacturer) application

When an HP (single unit or indoor + outdoor unit) is manufactured by the holder, an audit of the manufacturing site(s) is mandatory.

Similarly, when a dual-mode HP is manufactured by the holder, an audit of the water tanks' manufacturing site(s) is mandatory.

APPLICANT

Production site

Audit Single unit - OEM Outdoor unit - OEM

Indoor unit - OEM

Hot-water tank - OEM

A YES YES

B YES YES YES

C YES YES YES

D YES YES YES YES

- Case 2: 100 % maintenance application (BN = brand name)

When an HP (single unit or indoor unit + outdoor unit) is already NF414-certified, these same maintained HPs will not have specific audits. These maintained HPs will be checked during the follow-up audits of the manufacturing sites (OEM).


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Similarly, when a dual-mode HP is already NF414-certified, these same maintained HPs will not have specific audits. These maintained HPs will also be checked during the follow-up audits of the manufacturing sites (OEM).

On the other hand, if an OEM HP or range (heating or dual-mode) presents a nonconformity and is rerated, the said maintained HP (or range) will also be rerated. If an OEM range is suspended, the same maintained range will also be suspended. If an OEM range has been withdrawn from the site, the same maintained range will also be withdrawn from the site.

APPLICANT

Production site

Audit Single unit - BN Outdoor unit - BN

Indoor unit - BN

Hot-water tank - BN

E YES NO

F YES YES NO

G YES YES NO

H YES YES YES NO

- Case 3: Both OEM & BN application

When an HP is certified as maintenance and the hot-water tank as OEM, the hot-water tank (DHW) will be tested. On the other hand, when an HP is certified as OEM and the hot-water tank as BN, both the HP and the hot-water tank will be tested.

If an OEM (heating or dual-mode) HP presents a nonconformity and is rerated, the said maintained HP will also be rerated. If an OEM range is suspended, the same maintained range will also be suspended. If an OEM range has been withdrawn from the site, the same maintained range will also be withdrawn from the site.

Production site

Type of application

Audit

APPLICANT

Single unit - OEM

Single unit - BN

Outdoor unit - OEM

Outdoor unit - BN

Indoor unit - OEM

Indoor unit - BN

Hot-water tank

-

OEM

Hot-water tank

- BN

OU IU Tank Assembly

I YES YES OEM-BN YES NO YES

J YES YES OEM-BN NO YES YES

K YES YES YES OEM-BN YES YES NO YES

L YES YES YES OEM-BN YES NO YES YES

M YES YES YES OEM-BN NO YES YES YES

N YES YES YES OEM-BN NO YES NO YES

O YES YES YES OEM-BN NO NO YES YES

P YES YES YES OEM-BN YES NO NO YES

Q YES YES OEM-BN YES NO N/A N/A

R YES YES OEM-BN NO YES N/A N/A

3.1.3 Admission tests

Thermal, sound and seasonal performance are verified by targeted tests.

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

The tables below recap the various cases requiring a test:

- Case 1: 100 % OEM (original equipment manufacturer) application

APPLICANT

Production

TEST Single unit - OEM Outdoor unit - OEM

Indoor unit -

Hot-water tank - OEM


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OEM

A YES YES

B YES YES YES

C YES YES YES

D YES YES YES YES

- Case 2: 100 % maintenance application (BN = brand name)

APPLICANT

Production

TEST Single unit - BN Outdoor unit - BN

Indoor unit -

BN

Hot-water tank - BN

E YES NO

F YES YES NO

G YES YES NO

H YES YES YES NO

- Case 3: Both OEM & BN application

Production

Type of application

TEST APPLICANT

Single unit -

OEM

Single unit -

BN

Outdoor unit -

OEM

Outdoor unit -

BN

Indoor unit -

OEM

Indoor unit -

BN

Hot-water tank

- OEM

Hot-water tank

- BN

I YES YES OEM-BN YES

J YES YES OEM-BN DHW only

K YES YES YES OEM-BN YES

L YES YES YES OEM-BN YES

M YES YES YES OEM-BN YES

N YES YES YES OEM-BN YES

O YES YES YES OEM-BN DHW only

P YES YES YES OEM-BN YES

Q YES YES OEM-BN YES

R YES YES OEM-BN YES

3.1.3.1 The sampling rule

Tests are performed under the responsibility of the mark's laboratories (see §1.4.3).

The holder may request additional points in the test programme imposed by ECC.

Depending on the nature of the equipment and the applicant's test and study means, ECC may, for some categories of appliances that it has or will have defined, authorise the applicant to carry out the required tests in its own laboratories according to a procedure described in §1.5.

Tests are carried out in accordance with the supplementary standards and specifications quoted in part 2. A test report is prepared and sent to ECC by the laboratories (except for an authorised laboratory §1.5). After analysis, ECC will forward it to the Holders.


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General:

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 [Thermal + Acoustic].

- A heating only range and the reversible version of the same range are considered as 2 different ranges.

- If a heating only range is also certified as a reversible range with the same products, the same number of products and the same heating performance levels (no cooling performance), then for this case solely, a single test can validate these 2 ranges. In that case, the test will be performed on a reversible HP.

Dual-mode heat pumps and/or collective domestic hot water application:

For dual-mode HPs and/or HPS for a collective DHW application, the number of products to be tested and the tests programme are specifically defined in APPENDIX 2.

For Multisplit heat pumps:

Number of types of indoor units in the

range (apron wall, wall-

mounting, bracket-mounting, ceiling-

mounting, etc.)

A

Number of references of

different indoor units in the

range

B

Number of references of

different outdoor units in the range

C

1 to 2 1 2 to 5 1 2 to 5 1

3 to 4 2 6 to 10 2 6 to 10 2

5 to 6 3 11 to 15 3 11 to 15 3

≥ 7

1 addl. reference for

every 2 products

≥ 16


every 5 products

≥ 16


every 5 products

Table 1: Number of Multisplit heat pumps to be tested in a range

The number of combinations to be tested during admission is the sum of the coefficients A, B, and C in the above table.*

* For applications made after revision 11 of the standard

The number of combinations for which sound power is tested is given by coefficient B.

In view of the test method and test equipment in the laboratory, i.e.:

• connection of an indoor unit of the same model in the same range

• provision of two or even three climatic control chambers to test a combination with two types of IU mounting (apron wall, wall, bracket-mounting, ceiling-mounting, etc.), if necessary

In consultation with the laboratory, ECC shall carefully study the combinations that may be tested to validate all the selected OU and IU models.

Moreover, depending on the combinations selected, it will at least:

• test a combination that reaches 80 % of the rated capacity of the associated OU during operation (at 7/6_20/15 °C) and,

• test a combination that reaches 120 % of the rated capacity of the associated OU during operation (at 7/6_20/15 °C).

None of the other combinations will have to meet a specific criterion within the

80 %-120 % range of the OU's capacity.


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For heat pump available in heating mode only and reversible mode, (one or several ranges according to a common or different trademark):

- If the declared performance are identical for the two versions, only the reversible version is tested,

- If the declared performance are different, each version is tested

For heat pumps which can be installed outdoor or indoor (two ranges):

- One product per range is tested if the pressure in the discharge duct is less than 25 Pa - One product among the two ranges is tested if the pressure in the discharge duct is lower or

equal to 25 Pa.

For swimming pool HPs:

• The declared thermal and sound performance levels are checked by means of tests,

• COP thresholds are set,

• Sound power thresholds are set for certain HP heating capacity levels,

• For certain HP types, tests for suitability for this function are performed (hot and cold starts).

The test programme is defined according to HP type and seasonal or annual use. The selection of the number of products to be tested in a range is defined in § 3.1.3.1.

For dual-mode & collective DHW HPs: in addition, see APPENDIX 2

For Gas HPs: In addition, see APPENDIX 3

3.1.3.2 Table – Standard test – choice of conditions to test

The number of measurements 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:

- For air/water HPs: 3 points for a declared line and 1 point per additional line, - For other HP types: 2 points for a declared line and 1 points 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). Once the number of points is determined, these points can be selected in any line (and column).

Moreover,

- for some types of HP, some operating points are mandatory (to define reference flows), - The performance of the HPs is tested according to the pivot point conditions of the RT 2012

matrix if declared. - Specific performance of variable capacity regulation HPs is determined at one operating point,

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

point conditions if declared.

3.1.3.3 Seasonal performance - SCOP/SEER test - Choice of the conditions to be tested

3.1.3.3.1 Air/water HP

In average climate:

Declared application Number of

points to test Points to test

30/35 ° C and 1 setting on the water

4

✓ + 7 ° C (nominal condition of EN 14511)

✓ F (Tbiv) for consistency check with Pdesignh.

✓ 1 partial load point among A, B, C, D or E (TOL), which is different from

✓ F (Tbiv). Remarks: Tbiv <+ 2 ° C and TOL≤-7 ° C

✓ an auxiliary power among the four: Psb, Pto, Poff or Pck

47/55 ° C and 1 setting on the water

4



✓ 1 partial load point among A, B, C, D or E (TOL), which is different from F (Tbiv). Remarks: Tbiv <+ 2 ° C and TOL≤-7 ° C


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30/35 ° C & 47/55 ° C and 1 setting on

the water 5

✓ + 7 ° C / 47-55 ° (Rated condition of EN 14511)

✓ F (Tbiv) / 47-55 ° for consistency check with Pdesignh.

✓ 2 partial load points among A, B, C, D or E (TOL), which are different from F (Tbiv). Remarks: Tbiv <+ 2 ° C and TOL≤-7 ° C


By additional setting on the water

1 extra point per setting

1 point among A, B, C, D or E (TOL), which is different from F (Tbiv)

Note: "a setting on the water" means operating mode (flow and outlet water temperature).

Average climate

EN 14511 E Tdesignh A F B C D

+7°C TOL -10°C -7°C Tbiv +2°C +7°C +12°C

100 %

100 % 88 %

54 % 35 % 15 %

Fixed

flow

Fixed T 30/35°C

47/55°C

Variable

T

30/35°C

47/55°C

Variable

flow

Fixed T 30/35°C

47/55°C

Variable

T

30/35°C

47/55°C

In the warm climate

Declared application Number of points to test

Points to test

Added warm climate (in addition to average climate)

1 point per application declared

1 point per application declared. Notes: Tbiv <+ 7 ° C and TOL = Tdesignh = + 2 ° C

Addition of warm climate only (without average climate) 4



✓ 1 partial load point among A, B, C, D or E (TOL), which is different from F (Tbiv). Notes: Tbiv <+ 7 ° C and TOL = Tdesignh = + 2 ° C


Warm climate

EN 14511 E B F C D

+7°C TOL +2°C Tbiv +7°C +12°C

100 %

100 %

64 % 29 %

Cold climate

Declared application Number of points to test

Points to test

Addition of cold climate (in addition to average climate)

2 points per application declared

✓ 1 point per application declared among: Tbiv or {TOL if TOL≥-20 ° C} or {TOL or -15 ° C if TOL <-20 ° C}

✓ 1 other point per application declared. Remarks: Tbiv <-7 ° C, TOL <-15 ° C and Tdesignh = -22 ° C

Addition of cold climate only (without average climate) 4



✓ 1 partial load point among A, B, C, D or E (TOL), which is different from F (Tbiv).


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Cold climate

EN 14511 E Tdesignh F A B C D

+7°C TOL -22°C -15°C Tbiv -7°C +2°C +7°C +12°C

100 %

100 %

61 % 37 % 24 % 11 %

If the device is declared in cold climate, a start-up test is included in the COP measurement at a temperature ≤-15° C.

3.1.3.3.2 Water/water or glycol water/water HP

For a water machine (glycolée) / water setting fixed flow, fixed temperature, only the nominal point is necessary, COP partial load is determined by the calculation, one tests then:

Average climate

Number of points to test

Points to test

2 ✓ 10-7 ° C or 0 - (- 3) ° C (Nominal point of EN 14511)


1 extra point per setting

In other cases of adjustment, add:

✓ a partial load point

3.1.3.3.3 Air/air HP (≤ 12 kW)

For each declared mode (heating and/or cooling), the capacity and the COP (heating) and EER (cooling) are tested at:

Average climate

Number of points to test

Points to test

4

✓ + 7 ° C (nominal condition of EN 14511) in heating, A in cooling (also noted as Ac)

✓ F (Tbiv) for checking consistency with Pdesignh in heating

✓ 1 point among A, B, C, D or E (TOL), which is different from Ac and F (Tbiv).

✓ Four auxiliary power: Psb, Pto, Poff or Pck is tested for heating or cooling

For each additional climate:

For heating mode 2 additional points will be tested among conditions A to F of each additional climate declared.

3.1.3.4 Sound powers

Sound powers are tested in the conditions defined in APPENDIX 4.

3.1.3.5 Testing

On request, the manufacturer's personnel may be authorised by ECC to attend the preparation and installation of units but not the actual test. The presence of the manufacturer is only possible during the installation phase, and possibly assists in setting of 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.


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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 forward 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.

3.1.3.6 Special test conditions

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

“Ground-ground”, “water-ground” and “outdoor air-ground” HPS are outside the scope of a standard for determining the heating performance of heat pumps. This exclusion is related to the test method which is very different from those described in the European standard and applicable for heat pumps using air and water as heat transfer fluids. Pending the preparation and publication of a European standard for these particular appliances (work on CEN TC113 WG10), specific test protocols are applied to certify these heat pumps with respect the HP NF mark and are given in APPENDIX 5.

For Glycol Water / Water or Glycol Water HP, the nature and concentration of the glycol must be provided by the manufacturer before the test.

For swimming pool HPs:


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 Gas HP:

The test must be performed without heat recovery (if applicable). Heat recovery power is not included in the calculation of the GUE.

3.1.3.7 Tolerances

For performance tests

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

✓ -5 % for thermal power measured for water and the corresponding COP or EER, ✓ -5 % for thermal power for air measured in steady state by the room calorimeter method and the

corresponding COP or EER, ✓ -10 % for thermal power for air measured in a transient regime (defrosting cycles) by the room

calorimeter method and the corresponding COP or EER, ✓ -10 % for thermal power for air measured by the air enthalpy method and the corresponding COP

or EER, ✓ -10 %, for thermal power and for ground-ground, air-ground and water-ground HPs and the

corresponding COP or EER, ✓ +2 dB(A) for sound power levels Lw ✓ ± 10 % for LRContmin


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✓ -10 % for CCpLRContmin ✓ +10 % (min 15W*) for standby power

For seasonal performance tests

✓ -10 % for Pdesignh for air/water and ground/water HPs ✓ -10 % for Pdesignh for other HP types ✓ - 8 % for SEER, SCOP, SCOPnet and ηs.

• Part load points:

Heating

Part load COP -(2+3/%Part Load); between -5 and -10 %

A -5 %

B -8 %

C -10 %

D -10 %

E (TOL) -10 %

F (Tbiv)

G -5 %

Capacity at Tbiv -10 %

Cooling Part load EER -(2+3/%Part Load) limited, between -5 and -10 %

Auxiliaries Psb, Pto, Poff, Pck 10 % (min 15 W)*

*Example:

• If declared Psb < = 150 W, the tolerance shall be 15 W

• If declared Psb > 150 W, the tolerance shall be +10 %

For swimming pool HPs


✓ 5 % for low water flow HPs (T = 5 K),

✓ 10 % for high water flow HPs (T = 2 K).

Collective dual-mode & DHW HPs

See APPENDIX 2

For Gas HPs:

See APPENDIX 3

3.1.3.8 Validation or rerating

3.1.3.8.1 Thermal power, input power and COP (or EER)

When the declared thermal power, input power and COP (respectively EER) values all comply with the measured values within the applicable tolerance, they are validated.

When a deviation (difference between the declared and measured values) is out-of-tolerance, a correction, called “rerating” is applied.

For Collective dual-mode & DHW HPs: See APPENDIX 2

For Gas HPs: See APPENDIX 3

3.1.3.8.1.1 Tested unit

CASE 1: Non-compliant thermal power and COP / EER compliant

- For each measured thermal power (Pth): if the deviation is outside the tolerance, the declared value will be reduced to the value measured by the laboratory.

- Pth_rerated = Pth_measured

- COP / EER will not be rerated. For the measured absorbed power (Pe), even if the measured value is within the tolerance, in case of rerating of the Pth, Pe will also be rerated such as Pe_rerated = Pth_rerated / (COP or EER) _declared.


38

CASE 2: Compliant thermal power and non-compliant COP / EER

- Pth will not be rerated.

- For each COP / EER measured: if the deviation is outside the tolerance, the declared value will be reduced to the value measured by the laboratory. COP / EER_rerated = COP / EER_measured

- For the measured Pe, even if the measured value is within the tolerance, in case of rerating of the COP / EER, Pe will also be rerating such as Pe_rerated = Ph_declared / (COP or EER) _rerated.

CASE 3: Non-compliant thermal power and non-compliant COP / EER

- For each measured Pth: if the deviation is outside the tolerance, the declared value will be reduced to the value measured by the laboratory.

Pth_rerated = Pth_measured

- For each COP / EER measured: if the deviation is outside the tolerance, the declared value will be reduced to the value measured by the laboratory. COP / EER_rerated = COP / EER_measured

- For the measured Pe, even if the measured value is within the tolerance, in case of rerating of the COP / EER and Pth, Pe will also be rerated such as: Pe_rerated = Ph_rerated / (COP or EER) _rerated.

3.1.3.8.1.2 The other units of the range

The deviations applied to the conditions tested (model tested) are also transposed to the same conditions of the matrices of the other models in the range.

The conditions of the RT2012 matrix that did not result in rerating for the tested machine remain equal to the declared values for the other machines in the range.

Summary:

Pth COP/EER Tested model The other models of the range (transposition of the deviation)

Cas 1 Non compliant

Compliant

• Pth_rec = Pth_mes

• COP_(ou_EER) = COP_(ou_EER)_déc

• Pe_rec = Pth_rec / (COP_ou_EER)_déc

• Pth_rec = Pth_déc (1 + deviation)

• COP_(ou_EER) = COP_(ou_EER)_déc

• Pe_rec = Pth_rec / (COP_ou_EER)_déc

Cas 2 Compliant

Non compliant

• Pth = Pth_déc

• COP_(ou_EER)_rec = COP_(ou_EER)_mes

• Pe_rec = Pth_déc / (COP_ou_EER)_rec

• Pth = Pth_déc

• COP_(ou_EER)_rec = COP_(ou_EER)_déc (1+deviation)

• Pe_rec = Pth_déc / (COP_ou_EER)_rec

Cas 3 Non compliant

Non compliant

• Pth_rec = Pth_mes

• COP/EER_rec=COP/EER_mes

• Pe_rec = Ph_rec / (COP ou EER)_rec

• Pth_rec = Pth_déc (1+deviation)

• COP/EER_rec=COP/EER_déc (1+déviation)

• Pe_rec = Ph_rec / (COP ou EER)_rec

Legend: _rec = rerated value; _mes = measured value; _dec = declared value

3.1.3.8.2 Seasonal performance

For Pdesignh:

During the test, the laboratory shall verify that the measured Pbiv capacity is within ±10 % of the capacity recalculated from Pdesignh and the part load ratio at Tbiv.


39

- If Pbiv ranges within ±10 %, the test is continued.

- Otherwise, the laboratory must stop the test immediately and inform ECC, which will inform the apply/holder and request a revision of its machine’s performance levels. The applicant/holder shall be required to provide a revised technical data sheet (TDS) within one month for scheduling a second test.

If, during the second test, the deviation of Pdesignh is out-of-tolerance, Pdesignh shall be rerated only for the model tested.

For part load COP (EER):

During the official selection, the holder/applicant shall have to choose what will be applied if the deviation in the COP (or EER in cold mode) selected by ECC is out-of-tolerance for the selected part load point:

• Option 1: Continue testing

• Option 2: Measure a COP (respectively EER) for a second part load point

• Option 3: Measure the COP (respectively EER) for all part load points

If there is no out-of-tolerance deviation in the intermediate values (Part loads and Tbiv if applicable) following the test, the SCOP (respectively SEER) shall be recalculated with the declared values.

In case of out-of-tolerance deviation in the calculated SCOP (or SEER), the SCOP (or SEER) shall be corrected for the deviation (i.e. rerated for the measured value).

In case of out-of-tolerance deviation in one or more COP values (EER), the SCOP (SEER) shall be recalculated with:

- the measured COP(s), - the other COP values for the untested part load points corrected for the deviation minus the

tolerance. - the rerated COPs, when several part load points show a deviation (the average value of the

deviations corrected by the tolerance of each COP shall be applied)

The declared value of SCOP (respectively SEER) shall be rerated for all the models of the tested range except the models already tested and validated during previous tests.

The SCOP rerating shall not be applied to the second application (35 vs. 55) when both are declared. Similarly, rerating shall not apply to another climate (average, hot, cold) than the one measured for which a deviation was found.

Note: When the new declaration is not made within the aforesaid time limits, the corresponding certificate shall be suspended and withdrawn from the site by ECC.

For Auxiliary capacities:

In case of out-of-tolerance deviation in Psb, Pto, Poff or Pck, the declared power shall be corrected by a deviation corresponding to the deviation minus the tolerance.

The SCOP (respectively SEER) shall be rerated for all the models of the range tested with the rerated auxiliary capacity value for the application and the climate concerned.

Following the reratings, the applicant/holder shall update their French website within 3 months and their European websites within 6 months. The updated catalogues shall be checked during the audit.

Key: Dev = Deviation; Tol = Tolerance


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In case of deviation(s)

Case 1: one part load point tested

- COP tested = COP measured

- COPs not tested = COPs declared x(1+dev-tol)

Case 2: 2 part load points tested

if the second COP tested is compliant:

- COPs tested = COPs declared x

(1+1/2(dev-tol))

- COPs not tested = COPs declared x (1 + 1/2(dev-tol))

If both the tested COPs are non-compliant:

- COPs tested = COPs measured

- COPs not tested = COPs declared x (1 +avg (dev1-tol1; dev2-tol2))

Case 3: all part load points tested

all COPs tested = COPs measured

3.1.3.8.3 Sound performance

For each sound power measured: if the deviation is out-of-tolerance, the value is corrected for the deviation (i.e. brought to the measured value).

The corrections applied to the tested device are also applied to the other models in the range.

For multisplit heat pumps:

If the deviation is out of tolerance: - For multisplit Air / Air PAC ≤12kW, the deviation is applied to the complete system, - For multisplit Air / Air PAC> 12kW, the deviation is applied to the outdoor unit only.

3.1.4 Software verification

This option does not apply for the NF414 programme.

3.1.5 Evaluation and decision

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

ECC assesses each report intended for the applicant according to current procedures. Each report containing a nonconformity requires an answer within the deadline stated in the report and/or its cover letter. For the audits, the applicant shall present the actions taken or planned for each nonconformity, including their implementation schedule.


41

If necessary, ECC may anonymously (or nominatively if agreed by the applicant) present all the evaluation results to the Special Committee for review.

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.

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 period specified (notification of sending). These elements will be checked during the next on-site audit.

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

Depending on the results of all inspections, ECC makes one of the following decisions:

• Certification

• Certification refused

If certification is approved, AFNOR Certification authorises the use of the NF mark, and ECC sends the applicant, now a mark holder, the NF certificate and/or letter notifying the decision.

The applicant may challenge the decision by submitting an appeal in accordance with the General Rules of the NF mark.

MAINTAINING THE CERTIFICATION: monitoring procedures

The procedures described in §3.1 also apply to follow-up tests.

3.2.1 Follow-up of certified products and performance

Throughout certification, the holder shall:

• 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.


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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 on the basis of 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.

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

3.2.2 Monitoring audit

The provisions set out in § 1 apply.

The audit will last at least one day.

Normal monitoring of production units

The normal frequency is one audit per year for each production unit.

Reinforced monitoring

In the event of breach of these certification rules, the reinforced monitoring procedure may be implemented for a defined period. 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.

3.2.3 Monitoring tests

Each year, holder’s products are sampled for tests.

No. of certified ranges <= 3

No. of certified ranges >3 & <= 6

No. of certified ranges

> 6 No. of products tested 1 2 3


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- A heating only range and the reversible version of the same range are considered as 2 different ranges.

- If a heating only range is also certified as a reversible range with the same products, the same number of products and the same heating performance levels (no cooling performance), then for this case solely, a single test can validate these 2 ranges. In that case, the reversible range is tested.

• When a dual-mode HP range is certified, a dual-mode heat pump is sampled annually.

• When a collective DHW HP is certified, at least one combination is preferably sampled every year: for a holder having no more than 4 ranges of HPs, the full follow-up test of 1 combination, including sound power level, is preferably part of the 2 products tested annually; for each set of 4 additional HP ranges, one additional complete test is required.

• When 3 ranges of outdoor air/recycled air HPs are certified, one additional combination is sampled every year for every 3 ranges of this category of HP.

The products are chosen by ECC, which for each appliance informs the holder of the laboratory to which the unit(s) must be sent. A test report is drawn up by the laboratory and sent to ECC, which forwards it to the holder.

For holders with an “NF authorised” laboratory (§1.5), one of the two sampled products must be compared with a laboratory of the mark. The other product tested in the authorised laboratory must be the subject of a test report drawn up and sent to ECC.

For each HP category, the allowable tolerances relative to the certified values are given in part §3.1.

If the test results for a sampled product differ from the said product's certified performance levels, disregarding the specified tolerances, then all the values of the certified performance of the range must be rerated on the basis of the test report results for the tested product, according to the rerating rules defined in part §3.1 for each product category. The certificate is updated by ECC, which informs the holder thereof.

The tolerances defined in § 3.1.3.7 are also applicable during monitoring. If the test results for a sampled product differ from the said product's certified performance levels, disregarding the specified tolerances, then all the values of the certified performance levels of the range must be rerated 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.

3.2.4 Software verification

This option does not apply for the NF414 programme.

3.2.5 Evaluation and decision

The provisions set out in § 3.1 are applicable.

Each report that has a non-conformity according to current procedures requires an answer within a time frame defined in the report and/or its cover letter. For each non-conformity, the holder shall present the actions taken or to be taken, including the schedule to implement such actions.

ECC analyses the relevance of the corrective actions and may request an additional inspection (full or partial audit and/or tests).

If necessary, ECC may anonymously (or nominatively if agreed by the holder(s)) present all the evaluation results to the Special Committee for review.

Depending on the results of all inspections, ECC notifies the holder of one of the following decisions:


44

a) Renewal of certification: This renewal may include a correction of certified data ("rerating"), comments or a request for corrective actions. The right to use the mark is maintained.

Note: All the measured points are taken into account even in the case of withdrawal of RT2012 matrix points concurrent with the rerating.

b) Certification renewed with notice to remedy any detected breaches within a specific time frame. This conditional renewal may or may not be accompanied by increased inspections, testing or audits. The right to use the mark is maintained subject to conditions.

c) Certification suspended. The right to use the mark is suspended as long as the conditions for lifting the suspension are not met. The suspension has a maximum duration of one year. After this time frame, withdrawal of the certification is pronounced.

d) Certification withdrawn.

For sanctions b), c) and d), the fees for additional verifications are charged to the holder, regardless of their results. The decisions are enforceable from the date of their notification.

Holders are responsible for the right to use the mark relating to the product considered and undertake to implement the actions arising from the suspension or withdrawal of the right of use, made in accordance with these certification rules.

Any suspension and withdrawal of the right to use the mark shall lead to prohibition to use the mark and make reference to it for any new production. For products manufactured prior to the suspension or withdrawal of the right of use, the certifier may implement special measures on a case-by-case basis.

The holder may challenge the decision by submitting an appeal in accordance with the General Rules of the mark.

STATEMENT OF CHANGES

3.3.1 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.

3.3.2 Changes concerning production entities


The application shall be presented in accordance with the conditions.

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

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 audit can be simplified, or even waived, when the new site is already known to ECC.

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

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


3.3.4 Changes to the scope of certification: Additional Admission

A subsequent admission application for a new product or production unit: this is submitted by an applicant, who has the right to use the NF mark in the application concerned;

For any application received after 1st 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).


45

3.3.4.1. Additional admission for adding one or more products

An additional application for the addition of one or more new product (s) to an existing range (already certified) does not require a test report. For this specific case, the publication of the data will be done immediately on the ECC site free of charge.




- Nameplate,

- Catalog.

3.3.4.2. Additional admission for adding a new range or a new plant

Irrespective of the application examination procedure chosen by the manufacturer, see below, a single product will be tested for each new range or new manufacturing unit covered by the additional admission application, regardless of the number of products in the range.

This will be a complete test:

- [Thermal + Acoustic] or

- [Thermal + DHW + Acoustic] if applicable

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 procedure, no test report is required during examination of the application.

However, ECC will select a unit for an additional admission test 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.

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


46

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 for the addition of a new range or new manufacturing unit:

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




- Nameplate,

- Catalog,

- Test report if procedure 1 has been chosen.

3.3.5 Changes concerning the NF-certified product: Extension

3.3.5.1. Extension for adding a new application

An extension request to add a new application does not require a test report. For this specific case, the publication of the data will be done immediately on the ECC site free of charge.



- Catalog.

3.3.5.2. Extension to change performance already certified

If the performance of one or more product (s) of a range already tested in follow-up must be modified:

- Products with new performances must have a new reference. This will be a complementary application for admission.

- The products with the old performances will be published on the ECC website for 6 months with a "deleted" status while supplies last.

- §3.3.4.2 applies.


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If the performance of one or more products in a range that has not been tested in follow-up must be modified, the application does not require a test report. For this specific case, the publication of the data will be done immediately on the ECC site free of charge. Documents to be completed / provided are:


- Catalog.

3.3.6 Maintenance application

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 trademarks, 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.



- Catalog.

3.3.7 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

* If necessary, depending on the case

Documents to submit Admission Complementary

Admission Extension Maintenance

Declaration file provided by ECC X X X X

Electrical diagram, X X (X)*

Nameplate (with the logo project) X X (X)*

Catalog X X X X Test report (if procedure 1 was chosen) X (X)* (X)*


48

APPENDIX 1: PERFORMANCE AND THRESHOLD TABLES

CONTENTS

A.1 Energy performance in heating mode ............................................................................. 49

A.1.1 Outdoor air – water HP ..................................................................................... 49 A.1.2 Outdoor air – recycled air HP ............................................................................ 49 A.1.3 Extracted air – fresh air HP ............................................................................... 49 A.1.4 Ground water – water HP .................................................................................. 50 A.1.5 Glycol water – water or glycol water – glycol water on geothermal collector HP... 50 A.1.6 Glycol water – water on solar collector HP ......................................................... 50 A.1.7 Ground water – recycled air HP ......................................................................... 51 A.1.8 Water circuit – recycled air HP .......................................................................... 51 A.1.9 Glycol water – recycled air HP........................................................................... 51 A.1.10 Extracted air – water HP ................................................................................. 51 A.1.11 Ground - water HP .......................................................................................... 52 A.1.12 Ground - ground HP ........................................................................................ 52 A.1.13 Ground - water HP .......................................................................................... 52 A.1.14 Outdoor air – ground HP ................................................................................. 52

A.2 Energy performance in cooling mode .............................................................................. 52 A.2.1 Outdoor air – water HP ..................................................................................... 53 A.2.2 Outdoor air – recycled air HP ............................................................................ 53 A.2.3 Extracted air – fresh air HP ............................................................................... 53 A.2.4 Ground water – water HP .................................................................................. 53 A.2.5 Glycol water – water or glycol water – glycol water HP ....................................... 54 A.2.6 Ground water – recycled air HP ......................................................................... 54 A.2.7 Water circuit – recycled air HP .......................................................................... 54 A.2.8 Glycol water – recycled air HP........................................................................... 54 A.2.9 Extracted air – water HP ................................................................................... 55 A.2.10 Ground - water HP .......................................................................................... 55

B.1 Energy performance in heating mode ............................................................................. 55 B.1.1 Outdoor air – swimming pool water.................................................................... 55 B.1.2 (Ground) water – swimming pool water .............................................................. 56 B.1.3 Glycol water - swimming pool water................................................................... 56 B.1.4 Ground - swimming pool water .......................................................................... 57

C.1 Energy performance in heating mode ............................................................................. 57 C.1.1 Outdoor air – water HP ..................................................................................... 57 C.1.2 Ground water – water HP.................................................................................. 58 C.1.3 Glycol water – water or glycol water – glycol water HP ....................................... 58

C.2 Energy performance in cooling mode.............................................................................. 59 C.2.1 Outdoor air – water HP ..................................................................................... 59 C.2.2 Ground water – water HP.................................................................................. 59 C.2.3 Glycol water – water or glycol water – glycol water HP ....................................... 60

D.1 Energy performance in heating mode ............................................................................. 60 D.1.1 Outdoor air – water HP ..................................................................................... 60 D.1.2 Outdoor air – recycled air HP ............................................................................ 61

D.2 Energy performance in cooling mode.............................................................................. 61 D.2.1 Outdoor air – water HP ..................................................................................... 61 D.2.2 Outdoor air – recycled air HP ............................................................................ 61

E.1 Energy performance in heating mode ............................................................................. 61 E.1.1 Outdoor air – water HP ..................................................................................... 62 E.1.2 Ground water – water HP .................................................................................. 63 E.1.3 Glycol water – water or glycol water – glycol water HP ....................................... 63

E.2 Energy performance in cooling mode .............................................................................. 63 E.2.1 Outdoor air – water HP ..................................................................................... 64 E.2.2 Ground water – water HP .................................................................................. 64 E.2.3 Glycol water – water or glycol water – glycol water HP ....................................... 65

F. HP with CO2 - collective DHW .......................................................................................... 65


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A. Electric HP

A.1 Energy performance in heating mode

The energy performance in heating mode must be determined under the conditions below. The corresponding matrices appear in the § below 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.


A.1.1 Outdoor air – water HP

The heat pump must be started up by taking an outdoor temperature of -15°C and a maximum water temperature provided by the manufacturer. The water flow rate used for the test is that corresponding to the first application requested and should preferably be at the pivot point.

Note: The start-up test may be performed at an outdoor temperature below -15 ° C according to the manufacturer's declaration and laboratory limit.

For single-unit heat pumps installed indoors or for the indoor unit of split HPs, the indoor environment is at room temperature.

The HP must be able to start and operate for 20 minutes. ELEC/X/OA/W 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.

A.1.2 Outdoor air – recycled air HP

The heat pump must be started up to validate the operating range by taking an outdoor temperature of -15°C and an indoor temperature of 15°C.

The HP must be able to start and operate for 20 minutes.

ELEC/X/OA/RA T upstream (outdoor air) (°C)

-15 -7 2 7 20

T downstream (recycled air) (°C)

5

10

15

20 2.00 3.40

25

A.1.3 Extracted air – fresh air HP

ELEC/X/EA/FA T upstream (exhaust air) (°C)

5 10 15 20 25

T downstream (fresh air) (°C)

-15

-7 2.80

2

7 2.30

20


50

A.1.4 Ground water – water HP

ELEC/X/GW/W T upstream (ground water) (°C)

T return 5 10 15 20

T flow (**) 7 (**) (**)


T flow T return (*)

25 22 5.40

35 30 4.50

45 40 3.50

55 47 2.80

65 55 2.50

(*): For an upstream temperature of 10-7 ℃. For any other upstream source temperature, the test is performed with the rated downstream source flow rate obtained during the 10-7 ℃ test.

(**) The rated flow rate for the upstream source obtained during the 10-7 ℃ test is retained for the tests at other upstream source temperatures.

A.1.5 Glycol water – water or glycol water – glycol water on geothermal collector HP

ELEC/X/BR/W or ELEC/X/BR/BR T upstream (glycol water) (°C)

T return -5 0 5 10 15

T flow (**) -3 (**) (**) (**)

T downstream (water or glycol water) (°C)

T flow T return (*)

25 22 4.30

35 30 3.60

45 40 2.80

55 47 2.20

65 55 1.90

(*): For an upstream temperature of 0-(-3) °C. For any other temperature of the upstream source, the test is performed with the rated flow rate for the downstream source obtained during the test at 0-(-3) °C.

(**) The rated flow rate for the upstream source obtained during the 0-(-3) °C test is retained for the tests at other upstream source temperatures.

A.1.6 Glycol water – water on solar collector HP

To validate the operating range, the heat pump must be started up by taking the maximum upstream temperature (glycol solar water) and a maximum water temperature (downstream) provided by the manufacturer.


For each line for which one or more values are declared, at least the operating point with a COP threshold must be declared.

ELEC/S/BR/W T upstream (solar water) (°C)

T return -5 0 10 20 50

T flow (**) (**) 7 (**) (**)


T flow T return (*)

25 22 5.1

35 30 4.3

45 40 3.3

55 47 2.6

65 55 2.2

(*) For an upstream temperature of 10-7 °C. For any other temperature of the upstream source, the test is performed with the rated flow rate for the downstream source obtained during the test at 10-7°C.


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(**) The rated flow rate for the upstream source obtained during the 10-7 °C test is retained for the tests at other upstream source temperatures.

A.1.7 Ground water – recycled air HP

ELEC/X/GW/RA T upstream (ground water) (°C)

T return 5 10 15 20

T flow (*) 7 (*) (*)

T downstream (recycled air) (°C) 5

10

15

20 3.30

25

(*) The rated flow rate for the upstream source obtained during the 10-7 ℃ test is retained for the tests at other upstream source temperatures.

A.1.8 Water circuit – recycled air HP

ELEC/X/WL/RA T upstream (water loop) (°C)

T return 10 15 20 25 27

T flow (*) (*) 17 (*) (*)


5

10

15

20 3.30

25

(*) The rated flow rate for the upstream source obtained during the 20-17 °C test is retained for the tests at other upstream source temperatures.

A.1.9 Glycol water – recycled air HP

ELEC/X/BR/RA T upstream (glycol water) (°C)

T return -5 0 5 10 15

T flow (*) -3 (*) (*) (*)


5

10

15

20 3.30

25

(*) The rated flow rate for the upstream source obtained during the 0-(-3) °C test is retained for the tests at other upstream source temperatures.

A.1.10 Extracted air – water HP

ELEC/X/EA/W T upstream (exhaust air) (°C)

5 10 15 20 25


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.


52

A.1.11 Ground - water HP

ELEC/X/GR/W T upstream (ground) (°C) (**)

4


T flow T return (*)

25 22 4.10

35 30 3.40

45 40 2.70

55 47 2.20

65 55 1.90


(**): Corresponds to the temperature of the bath glycol water

A.1.12 Ground - ground HP

ELEC/X/GR/GR T upstream (ground) (°C) (*)

-5

T downstream (ground) (°C) (**)

35 3.40

(*): Corresponds to the evaporation temperature

(**): Corresponds to the condensation temperature


ELEC/X/W/GR T upstream (water) (°C)

T return 5 10 15 20

T flow (*) 7 (*) (*)

T downstream (ground) (°C) (**)

35 4.20

(*): The rated flow rate for the upstream source obtained during the 10-7 ℃ test is retained for the tests at other upstream source temperatures.

(**): Corresponds to the condensation temperature

A.1.14 Outdoor air – ground HP


The HP must be able to start and operate for 20 minutes. ELEC/X/OA/GR T upstream (outdoor air) (°C)

-15 -7 2 7 20

T downstream (ground) (°C) (*)

35 2.00 3.30

(*): Corresponds to the condensation temperature

A.2 Energy performance in cooling mode

The energy performance in cooling mode, meaning the cooling capacity, and the EER, must be determined under the conditions below. There is no defined EER threshold.

The corresponding EER matrices appear in the § below for each HP type. The matrix items highlighted in yellow correspond to any pivot points defined in RT 2012.


53

A.2.1 Outdoor air – water HP

ELEC/X/OA/W T upstream (outdoor air) (°C)

5 15 25 35 45


T flow T return (*)

1.5 6.5

7 12

12.5 17.5

18 23

23.5 28.5


A.2.2 Outdoor air – recycled air HP

ELEC/X/OA/RA T upstream (outdoor air) (°C)

5 15 25 35 45


22

27

32

37

A.2.3 Extracted air – fresh air HP

ELEC/X/EA/FA T upstream (exhaust air) (°C)

22 27 32 37

T downstream (fresh air) (°C)

5

15

25

35

45

A.2.4 Ground water – water HP

ELEC/X/GW/W T upstream (ground water) (°C)

T return 5 10 15 20

T flow (**) 15 (**) (**)


T flow T return (*)

1.5 6.5

7 12

12.5 17.5

18 23

23.5 28.5

(*): For an upstream temperature of 10-15 °C. For any other upstream source temperature, the test is performed with the rated downstream source flow rate obtained during the 10-15 °C test.



54

A.2.5 Glycol water – water or glycol water – glycol water HP

ELEC/X/BR/W or ELEC/X/BR/BR T upstream (glycol water) (°C)

T return 0 10 20 30 40

T flow (**) (**) (**) 35 (**)


T flow T return (*)

1.5 6.5

7 12

12.5 17.5

18 23

23.5 28.5

(*) For an upstream temperature of 30-35 ℃. For any other upstream source temperature, the test is performed with the rated downstream source flow rate obtained during the 30-35 ℃ test.


A.2.6 Ground water – recycled air HP

ELEC/X/GW/RA T upstream (ground water) (°C)

T return 5 10 15 20

T flow (*) 15 (*) (*)


22

27

32

37

(*): The rated flow rate for the upstream source obtained during the 10-15 °C test is retained for the tests at other upstream source temperatures.

A.2.7 Water circuit – recycled air HP

ELEC/X/WL/RA T upstream (water loop) (°C)

T return 0 10 20 30 40

T flow (*) (*) (*) 35 (*)


22

27

32

37


A.2.8 Glycol water – recycled air HP

ELEC/X/BR/RA T upstream (glycol water) (°C)

T return 0 10 20 30 40

T flow (*) (*) (*) 35 (*)


22

27

32

37



55

A.2.9 Extracted air – water HP

ELEC/X/EA/W T upstream (exhaust air) (°C)

22 27 32 35 37


T flow T return (*)

1.5 6.5

7 12

12.5 17.5

18 23

23.5 28.5



ELEC/X/GR/W T upstream (ground) (°C)

30


T flow T return

7 (*)

18 (*)

(*): With the water flow rate determined in heating mode

B. Swimming pool HPs

B.1 Energy performance in heating mode

The energy performance in heating mode, meaning the heating capacity, the absorbed electrical power and the COP, must be determined under the conditions below. COP thresholds are defined and must be respected.

B.1.1 Outdoor air – swimming pool water

✓ Application for seasonal use

Low water flow heat pumps (T = 5 °C)

Evaporator Swimming pool heating system Min. COP

Dry bulb temperature (°C)

Wet bulb temperature (°C)

Water inlet temperature (°C)

Water outlet temperature (°C)

15 12 26 31 4.20

7 6 26 * 3.40

(*) The test is performed with the water flow rate determined during the test at +15 ℃.

(*) The test is performed with the water flow rate determined during the test at +15 ℃.

A test for suitability for the function must be performed, on one of the appliances selected for determination of thermal performance (see § 3.1.3.2), under the conditions defined below:

• Minimum air temperature 7(6) °C with a minimum water temperature of 12 °C

• Maximum air temperature 30(20) °C with maximum water temperature 26 °C

For both these conditions, the machine must start and operate for 20 minutes.







15 12 26 28 4.20

7 6 26 * 3.40


56

✓ Application for year-round use







15 12 26 * 4.20

7 6 26 31 3.40

2 1 26 * 2.70

(*) The test is performed with the water flow rate determined during the test at +7 °C.







15 12 26 * 4.20

7 6 26 28 3.40

2 1 26 * 2.70

(*) The test is performed with the water flow rate determined during the test at +7 °C.

A test for suitability for the function must be performed, on one of the appliances selected for determination of thermal performance (see § 3.1.3.2), under the conditions defined below:

• Minimum air temperature 2(1) °C with a minimum water temperature of 12 °C

• Maximum air temperature 30(20) °C with maximum water temperature 26 °C

For both these conditions, the machine must start and operate for 20 minutes.

B.1.2 (Ground) water – swimming pool water







10 7 26 31 4.50







10 7 26 28 4.50

B.1.3 Glycol water - swimming pool water







0 -3 26 31 3.60







0 -3 26 28 3.60


57

B.1.4 Ground - swimming pool water



Evaporating temperature (°C) Water inlet

temperature (°C) Water outlet

temperature (°C)

-5 26 31 3.40



Evaporating temperature (°C) Water inlet

temperature (°C) Water outlet

temperature (°C)

-5 26 28 3.40

C. gas absorption HPs

C.1 Energy performance in heating mode

The energy performance in heating mode, meaning the rated heating capacity, the effective input power and the GUE, must be determined under the conditions below. GUE thresholds are defined for certain operating points and must be respected.

The corresponding GUE matrices appear in the § below for each HP type with the following conventions:

• When a GUE value is explicitly mentioned, it defines the applicable threshold for the corresponding operating point,


C.1.1 Outdoor air – water HP

The heat pump must be started up to validated the operating range, taking an outdoor temperature of -15°C and a mean water temperature provided by the manufacturer. The water flow rate used for the test is that corresponding to the first application requested and should preferably be at the pivot point.



Matrix as per RT 2012 T upstream (outdoor air) (°C)

-15 -7 2 7 20


30 1.20 1.40

35 1.10 1.35

45 1.00 1.30

50 0.9 1.20

60 0.7 0.9

Table of test conditions as per EN 12309-3

T upstream (outdoor air) (°C)

-15 -7 2 7 12 20


T flow T return

35 *

45 *

55 *

65 *

*: as per standard EN 12309-3D.4.1.2


58

C.1.2 Ground water – water HP

Matrix as per RT 2012 T upstream (ground water) (°C)

2.5 7.5 12.5 17.5


30 1.52

35 1.50

45 1.40

50 1.35

60 1.25


T upstream (ground water) (°C)

T return 10 15

T flow * *


T flow T return

35 *

45 *

55 *

65 *

*: as per EN 12309-3 standard

C.1.3 Glycol water – water or glycol water – glycol water HP

Matrix as per RT 2012 T upstream (glycol water) (°C)

-2.5 2.5 7.5 12.5 17.5


30 1.50

35 1.50

45 1.40

50 1.35

60 1.25


T upstream (glycol water) (°C)

T return -5 0 5 10 15

T flow * * * * *


T flow T return

35 *

45 *

55 *

65 *



59

C.2 Energy performance in cooling mode

The energy performance in cooling mode, meaning the cooling capacity, and the GUE, must be determined under the conditions below. There is no defined GUE threshold.

The corresponding GUE matrices appear in the § below for each HP type. The matrix items highlighted in yellow correspond to any pivot points defined in RT 2012.

C.2.1 Outdoor air – water HP


5 15 25 35 45


4

9.5

15

20.5

26



27 35 46


T flow T return

7 *

18 *


C.2.2 Ground water – water HP


2.5 12.5 22.5 32.5 42.5


4

9.5

15

20.5

26


T upstream (ground water) (°C)

T return 30

T flow 35


T flow T return

7 12

18 23


60

C.2.3 Glycol water – water or glycol water – glycol water HP

D. Gas IC engine-driven HPs

D.1 Energy performance in heating mode

The energy performance in heating mode, meaning the heating capacity, the absorbed electrical power and the GUE, must be determined under the conditions below. GUE thresholds are defined for certain operating points and must be respected.

The corresponding GUE matrices appear in the § below for each HP type. It should be noted that, when a GUE value is explicitly mentioned, it defines the applicable threshold for the corresponding operating point.

D.1.1 Outdoor air – water HP

The heat pump must be started up to validated the operating range, taking an outdoor temperature of -15°C and a mean water temperature provided by the manufacturer. The water flow rate used for the test is that corresponding to the first application requested.




-15 -7 2 7 20


T flow T return (*)

25 22 0.50 1.29

35 30 0.56 1.26

45 40 0.53 1.10

55 47 0.50 0.90

65 55 0.40 0.60



T upstream (glycol water) (°C)

T return 30

T flow 35


T flow T return

-5 0

7 12

18 23 Matrix as per RT 2012 T upstream (glycol water) (°C)

2.5 12.5 22.5 32.5 42.5


4

9.5

15

20.5

26


61

D.1.2 Outdoor air – recycled air HP




-15 -7 2 7 20


5

10

15

20 0.70 1.30

25

D.2 Energy performance in cooling mode


The corresponding GUE matrices appear in the § below for each HP type.

D.2.1 Outdoor air – water HP


5 15 25 35 45


T flow T return (*)

1.5 6.5

7 12

12.5 17.5

18 23

23.5 28.5


D.2.2 Outdoor air – recycled air HP


5 15 25 35 45


22

27

32

37

E. Gas EC engine-driven HP

E.1 Energy performance in heating mode

The energy performance in heating mode, meaning the heating capacity, the effective power input and the GUE, must be determined under the conditions below. GUE thresholds are defined for certain operating points and must be respected.

The corresponding GUE matrices appear in the sections below for each type of HP with the following conventions:

• When a GUE value is explicitly mentioned, it defines the applicable threshold for the corresponding operating point,



62

E.1.1 Outdoor air – water HP

The heat pump must be started up to validated the operating range, taking an outdoor temperature of -15°C and a mean water temperature provided by the manufacturer. The water flow rate used for the test is that corresponding to the first application requested and should preferably be at the pivot point.




-15 -7 2 7 20


30 1.20 1.40

35 1.10 1.35

45 1.00 1.30

50 0.9 1.20

60 0.7 0.9


Outdoor heat exchanger [°C] (dry (humid) outdoor air temperature)

-15 (-16)

-7 (-8)

2 (1)

7 (6)

12 (11)

20 (19)

Indoor heat exchanger [°C]

T flow T return a)

35 b)

45 b)

55 b)

65 b)

NOTE: a) All tests shall be performed with the rated flow rates indicated in the instructions in cubic metres per second, provided that the difference between inlet and outlet temperatures in the indoor heat exchanger is less than a

maximum temperature difference (ΔT max) calculated using the following equation:

∆Tmax = 7+ (Tsortie − 35

30) ∙ 10

If this condition is not met, the flow rate shall be increased until T is equal to Tmax. If a rated flow rate is not indicated in the assembly instructions and/or if only a flow rate range is provided, the tests shall be performed at

the provided minimum value provided that ΔT is equal to ΔTmax. b) The tests shall be performed with the flow rate given by the control system of the appliance or, failing that, with the flow rate obtained during the test under the corresponding standard performance conditions, provided that the

ΔT maximum condition in “a)” is met in both cases. The control system of the appliance should control the pumps, such as internal pumps.


63

E.1.2 Ground water – water HP


2.5 7.5 12.5 17.5


30 1.52

35 1.50

45 1.40

50 1.35

60 1.25

Table of test conditions as per EN 12309-3 Outdoor heat exchanger [°C] (ground water)

T return 10 15

T flow 7 b)


T flow T return a)

35 b)

45 b)

55 b)

65 b)

Note: as per EN 12309-3, see note in section F.4.1.1

E.1.3 Glycol water – water or glycol water – glycol water HP


-2.5 2.5 7.5 12.5 17.5


30 1.50

35 1.50

45 1.40

50 1.35

60 1.25

Table of test conditions as per EN 12309-3 Outdoor heat exchanger [°C] (glycol water)

T return -5 0 5

T flow b) -3 b)


T flow T return a)

35 b)

45 b)

55 b)

65 b)

Note: as per EN 12309-3, see note in section F.4.1.1

E.2 Energy performance in cooling mode


The corresponding GUE matrices appear in the sections below for each HP type. The matrix items highlighted in yellow correspond to any pivot points defined in RT 2012.


64

E.2.1 Outdoor air – water HP


5 15 25 35 45


4

9.5

15

20.5

26

Table of test conditions as per EN 12309-3 Outdoor heat exchanger [°C] (outdoor air)

27 c) 35 c) 46 c)


T flow T return d)

-5 0

7 12

18 23

a) The performance conditions for water/water or glycol water/water appliances may be extended to water/glycol water and glycol water/glycol water appliances respectively (for example for reversible applications). c) Dry bulb temperature.

d) The tests must be performed with the flow rate obtained during the test under the corresponding standard performance condition.

E.2.2 Ground water – water HP


2.5 12.5 22.5 32.5 42.5


4

9.5

15

20.5

26

Table of test conditions as per EN 12309-3 Outdoor heat exchanger [°C] (ground water)

T return 30 b)

T flow 35 c)


T flow T return

7 12

18 23

a) The performance conditions for water/water or glycol water/water appliances may be extended to water/glycol water and glycol water/glycol water appliances respectively (for example for reversible applications). b) The water shall be added with any product specified in the instructions, but the test conditions remain the same as for water. c) Dry bulb temperature.


65

E.2.3 Glycol water – water or glycol water – glycol water HP


2.5 12.5 22.5 32.5 42.5


4

9.5

15

20.5

26

Table of test conditions as per EN 12309-3 Outdoor heat exchanger [°C] (glycol water)

T return 30 b)

T flow 35 c)


T flow T return

-5 0

7 12

18 23

a) The performance conditions for water/water or glycol water/water appliances may be extended to water/glycol water and glycol water/glycol water appliances respectively (for example for reversible applications). b) The water shall be added with any product specified in the instructions, but the test conditions remain the same as for water. c) Dry bulb temperature. d) The tests must be performed with the flow rate obtained during the test under the corresponding standard performance condition.

F. HP with CO2 - collective DHW

The HP with CO2 is assimilated to an outdoor air / water heat pump in DHW operation in the sense of the Th-BCE 2012 method. The tests are carried out for a water outlet temperature greater than or equal to 55 ° C. It is necessary to certify at least the pivot point. The certification of other points will be made according to the order of priority indicated in the table above.


66

APPENDIX 2. PROVISIONS SPECIFIC TO DUAL-MODE (HEATING AND DOMESTIC

HOT WATER) AND COLLECTIVE DOMESTIC HOT WATER PRODUCTION HPS ONLY

CONTENTS

1. Definition of systems and ranges ..................................................... 67 1.1 Dual mode heap pump .................................................................................67 1.1.1 Simultaneous operation dual-mode HPs .......................................................67 1.1.2 Alternating operation dual-mode HP .............................................................67 1.2 Tanks range .................................................................................................70 1.3 Range of dual-mode HPs or Range of HPs producing DHW only ..................70

2. Characterisation methods and technical specifications ............... 71 2.1 Principles .....................................................................................................71 2.2 Characterisation methods of simultaneous operation HPs – Tests ................72 2.3 Characterisation methods of alternating operation HPs.................................72

2.3.1 Tests .........................................................................................................72 2.3.2 Simulation ..................................................................................................73 2.3.3 Measurement of reheating time ..................................................................76

2.4 Conditions for validating declared values ......................................................76 2.4.1 Tests .........................................................................................................76 2.4.2 Simulation ..................................................................................................76

3. Quality control specifications ........................................................... 77


67

1. DEFINITION OF SYSTEMS AND RANGES

1.1 Dual mode heap pump

The list of the main systems covered is given in the table below. Other types of systems may be certified, but should undergo an assessment by CERTITA prior to the application.

1.1.1 Simultaneous operation dual-mode HPs

A simultaneous operation dual-mode heat pump is a system composed of:

• a heat pump,

• a storage tank (incorporating an exchanger if applicable),


• accessories.

1.1.2 Alternating operation dual-mode HP

An alternating operation dual-mode HP is a system composed of:

• a heat pump,

• a storage tank,


• if applicable, a hydraulic circuit switching component (e.g. 3-way valve),

• one or more circulation pump(s), if applicable,

• if applicable, an intermediate exchanger,

• accessories.

Table C.1: List of main systems covered

Type of dual-mode HPs

System components

Sample block diagram

1

. HP with desuperheater separate from condenser . Storage tank incorporating the desuperheater . Condenser connected to heating circuit

Alternating operation HP with intermediate

exchanger

2

. HP

. Intermediate exchanger . Storage tank . Circulator pump(s) . 3-way valve

Alternating operation HP with intermediate

exchanger


68

3

. HP

. Water bath exchanger . Storage tank . Circulator pump(s) . 3-way valve

HP with water bath exchanger

A. Alternating operation HP

B. Simultaneous operation HP

4

. HP

. Storage tank incorporating exchanger . Circulator pump . 3-way valve

Alternating operation HP with integrated

coil or double-jacket

exchanger

5

. HP

. Storage tank incorporating exchanger . Circulator pump(s)

Alternating operation HP with dual

condenser and DHW exchanger

6

. HP

. Storage tank incorporating exchanger . with or without Circulator pump

Alternating operation HP with dual

condenser without DHW exchanger

7 . HP . Storage tank incorporating exchanger for instant DHW production . Circulator pump . 3-way valve

A. Alternating operation HP

B. Simultaneous operation HP


69

8

. HP

. Non-pressurised utility water storage tank including a coil exchanger for instant production of domestic hot water and a coil exchanger for loading. . Circulator pump . 3-way valve . Heat rod, optional

1. Split system with separated non-pressurised tank

2. Compact split system with integrated non-pressurised tank

Alternating operation HP with domestic hot water coil exchanger in a non-pressurised

tank (utility water storage tank, at

atmospheric pressure in which

domestic hot water is instantly produced

via a large-sized coil exchanger,

immersed in a tank).

9

. HP

. Non-pressurised utility water storage tank including a coil exchanger for instant production of domestic hot water and coil exchanger of refrigerant circuit for loading . Circulator pump . 3-way valves . Heat rod, optional

1. Split system with separated non-pressurised tank

2. Compact split system with integrated non-pressurised tank

Alternating operation HP with a domestic

hot water coil exchanger in a non-

pressurised tank (utility water storage tank at atmospheric pressure in which

domestic hot water is instantly produced

via a large-sized coil exchanger immersed in a tank) and tank

load directly via refrigerant fluid

circuit


70

1.2 Tanks range

A range of tanks is a set of tanks in which the following items are identical:

• heat losses: the ratio of the static losses to the tank volume (to be supported by the manufacturer) does not differ by more than 40%,

• position (horizontal or vertical),

• geometry (cylindrical, spherical, etc.),

• if applicable, relative position and type (low, high or middle) of the exchanger and the electrical reserve.

For some special cases in which these provisions are unsuitable, special provisions may be defined on a case-by-case basis.

1.3 Range of dual-mode HPs or Range of HPs producing DHW only

A dual-mode HP range is a set of systems solely comprising:

• HPs belonging to the same range according to the definition of HPs for space heating (Appendix A),

• tanks belonging to the same range (see 1.2),

• the same exchanger technology (plates, coils, etc.),

• the same DHW function control process,

• the same hydraulic or refrigerating circuit switching component technology, if applicable (for alternating operation dual-mode HPs).

The same definition applies to a range of HPs producing DHW only

Figure C.1 Schematic representation of a "Dual-mode" range or a range of HPs producing DHW only

A range of dual-mode HPs or a range of HPs producing DHW only

A range of tanks A range of “heating” HPs

HP 1

HP 2

HP 3

HP 4

HP 5

Tank 1

Tank 2

Tank 3

Exchanger type: plates, coils, etc.

A DHW function control process

A switching component technology


71

2. CHARACTERISATION METHODS AND TECHNICAL SPECIFICATIONS

2.1 Principles

The HPs must be NF Heating HP-certified for operation in heating mode, except for the collective domestic hot water application in which HPs can exclusively operate in DHW mode (without meeting heating requirements).

The performance mentioned in § 0 above and determined according to § 2.2 and 2.3 below must comply with the values declared by the applicant or holder (corresponding to the declared set-point temperature and tapping cycle).

Multiple set-point temperatures and/or tapping cycles may be declared by the applicant or holder.

Several ranges of alternating dual-mode HPs can be grouped together according to the holder's/applicant's choice, on the basis of:

• a set of HP ranges which have the same upstream heat source (e.g. air, water, ground, etc., where water and glycol water are equivalent)

• a same range of tanks (see § 1.2)

• a same DHW function control process (position of the sensor, hysteresis of the sensor, off-peak mode, etc.),

• a same DHW exchanger technology (coils, plates, etc.)

• a same HP output power control (fixed or variable)

• a same maximum heating upstream temperature

Performance declarations for the DHW function are checked by means of tests and/or simulations.

Dual-mode HPs

The performance of the ranges are determined (see 1.3) with at least 1 test of the DHW function on one model for a declared set-point temperature and tapping cycle and can be certified using simulation for the other models.

If one of these items is different, an additional test on another model must be performed.

Note: If the technology circuit switching component is different, no further tests need to be performed.

Collective domestic hot water

1 to n models of the same HP range can be combined with 1 to m tanks of the same tank range (see below)

HP1 HP2 … HPn HP1+HP2 … HP1+…+ HPn

Tank1

Tank2

…

Tankm

Tank1+Tank2

… combination Non-existing

Tank1+…+Tankm

Tank combinations (series or parallel) are considered as a single tank in which the volume is the sum of the individual volumes and in which the static pressure loss is the sum of the static pressure loss of the tanks.

In case of admission:

If the heat pump range is not certified in heating mode, one test is required per heat pump for one tank, i.e. n tests. If the heat pump range is certified in heating mode, 1 test is required for 1 heat pump and 1 tank (in blue in the above table)

The other combinations are certified using simulation upon request. Otherwise, one combination for every 5 HP models of a range must be tested (also in blue in the above table).

1 to n models of x ≠ HP ranges can be combined according to the category in the table indicated in standard-sheet 6A with 1 to m tanks of the same range. These combinations shall be certified using simulation when applicable upon request. Otherwise, 1 combination for every 5 HP models of a range must be tested (in blue in the above table).


72

General

For an admission, the applicant chooses the product(s) which will be tested, taking care to select a mid-range product in terms of capacity and tank volume. We advise the applicant to contact Eurovent Certita to validate the selected test model and conditions.

The HPs to be tested must be furnished with:

• the technical data sheet (§9.1 of NF EN 16147)

• instructions in respect of installation and maintenance in particular (§9.2 of NF EN 16147)

• connection components if these are specific

In any case, one certificate is issued for each dual-mode HP, collective dual-mode HP or collective domestic hot water only range = 1 range + 1 to m tanks.

2.2 Characterisation methods of simultaneous operation HPs – Tests

Performance are characterised by tests based on the following criteria:

The HP is set to stabilised heating mode operation according to the provisions defined in the NF standard for the corresponding HP types for space heating.

Once stable operation has been achieved, DHW tapping is carried out according to the cycle described by the NF EN 16147 standard and specified by the manufacturer. The upstream and set-point temperatures are specified by the applicant or manufacturer.

The condenser return temperature is set to 30 ±1 °C.

The test protocol is as follows:

• HP installation according to manufacturer recommendations

• Filling of tank with cold water at 10 °C

• Manually shunting of solenoid switch valve to DHW (no temperature rise activation)

• Test condition settings in heating mode (e.g. for Ground water: 10-7 °C, Floor heating water: 30-35 °C)

• Measurements and results as per EN 14511 or EN 15879 (heating mode): Thermal power, COPheating

• Switching of the solenoid valve for DHW mode

• Measurements and results as per EN 16147: Heating-up time, Spare capacity, Maximum hot water volume, Reference hot water temperature and COPglobal calculation

2.3 Characterisation methods of alternating operation HPs

2.3.1 Tests

The HP tests for DHW mode are conducted as per the EN 16147 standard with the following additional instructions.

Installation:

The manufacturer must provide all the components of the dual-mode HP, i.e.:

• The heat pump

• The tank

• The exchanger, if applicable

• The 3-way heating / DHW switching valve

• The DHW circuit circulation pump

• Lengths of pipes connecting the various components, with their insulation and end connections.

• Auxiliary electrical heating for DHW function, if applicable

The assembly shall be set up according to the manufacturer's instructions in the climatic chambers suitable for maintaining the environmental conditions defined in the EN 16147 standard.

The HP shall not be connected to a dummy heating circuit; therefore, these connections shall be sealed and the manufacturer must envisage an operating procedure for the HP under these specific conditions.

Such a procedure may consist of setting a water set-point temperature on the floor such that the heating/cooling mode is not activated.

Instrumentation:

The intermediate water circuit(s) between the HP and the exchanger (and/or the tank) include(s) no temperature or water flow rate instrumentation.


73

β

α

γ

Temperature probe

Commissioning and tests:

To be able to control the DHW test bench handling the test sequence, retrieval of a binary signal (e.g. 0-10V) from the tank DHW request is necessary.

The manufacturer should provide the laboratory with the option of retrieving this signal.

2.3.2 Simulation

Limit of the simulation tool

In view of the validations made on the simulation tool:

• Dual-mode HPs requiring start-up of the auxiliary heating in order to reach their performance cannot be simulated,

• Simulation of performance are determined excluding the off-peak option,

• Tanks suitable for simulation have volumes between 150 l and 400 l in volume of water stored

• For each simulated dual-mode HP model, the exchanger must have a minimal area, based on the heating power available for DHW of 0.25 m²/kW for a coil-type exchanger and 0.025 m²/kW for a plate-type exchanger.

Simulation input data

For each model for which performance are simulated for certification, the manufacturer must declare the following data:

• Declared volume of the tank (Vn in l)

• Useful water volume of the tank (Ve in l), by default Ve = 0.95x Vn

• Inner diameter of the tank (D in m)

• Total empty mass of the tank (MBallon in kg)

• Area of the exchanger (SEch in m²)

• Mass of the exchanger (MEch in kg)

• Fraction which gives the position of the low point of the exchanger (see picture) compared to the low point of the

cylinder equivalent to the storage tank (, value between 0 and 1),

• Fraction which gives the proportion of the exchanger located above the low point of the exchanger compared to the whole

exchanger (, value between 0 and 1)

• Set-point temperature of the tank (TC in C°, indicated in the certificate)

• Position of the temperature probe in the tank: upper half or lower half

• Fraction which gives the position the temperature probe compared to the low point of the cylinder equivalent to the

storage tank (, value between 0 and 1)

• Hysteresis of the temperature probe of the tank (THyst in °C)

• Mean actual water temperature of the tank in stabilised mode in zone 1- (TTank in °C, used for the simulation)

• The proportion of heating capacity available for DHW for each certified point below, if different from the heating capacity in heating mode (P in kW)

• Tapping cycle(s) to be simulated.

Moreover, a test report issued by an independent ISO 17025-accredited laboratory must support the following data:

• Static heat loss coefficient of the storage tank according to standard NF EN 15332 (QPR, in Wh per 24h for a difference of temperature of 45 °C)

Note: QPR is referred to as QB in the standard.

Finally, the following data must be certified in heating mode for each model of the heating HP range:

• Standby power (PSB, in W)

• Characteristics at the upstream temperature operating points corresponding to the requirement of the standard NF EN 16147 (i.e. 7 °C for outdoor air / water) and at the following downstream temperatures:

o 30-35°C, o 40-45 °C, o 47-55 °C if the maximum set-point temperature (Tcmax) is greater or equal to 55 °C

Figure C.2 Cylinder equivalent to

the tank and fractions and


74

o At Tcmax with a t of 5K if the maximal set-point temperature is less than 55 °C (i.e. 49-54 °C).

Simulated performance

Heating-up time [th]:

)P0,0010,5 (P3600

10)(TM0,38β)M(M4,25V4,2α)(1 t

PDMT

CuveEchEchBallonnh

−

−+−+−=

where:

• PDMT (in kW), the mean of the certified heating capacities at 30/35 and 40/45

• PP (in W), heating capacity required to compensate for the static heat losses of the storage tank (in this case, 20 is the room temperature):

24

20)T0,5(TKVP

HystCuveRn

P

−−=

with a cooling constant KR in Wh/(24.l.K) (For a QPR in Wh/24h with a T of 45 °C):

n

PRR

V45

Q K

=

The spare capacity (Pes):

)(P 1))-(nexp(-0,225V

Dr 1 (n)P es2/3

n

2

0es

+=

where:

• n, number of the operating cycle of the HP during simulated phase P2

• r0 = 175 (no unit)

• Pes (∞) heat losses of the storage tank in stabilised mode, given by the following formula (where fc is the “hot area fraction of the tank”):

PES

PCes

COP

Pf )(P =

where 3

n

3

n

C

D

V001,0162

D

V001,016)-(11

f

+

+

=

and, with COPPES, the COP interpolate with the temperature of the storage tank (TTank) reduced by half the value of the hysteresis (THYST)

If the first simulated cycle lasts more than 48 hours:

SBeses P (1)P P +=

If there are several simulated cycles during the 48 hours, the cycle n exceeding 48h is taken into consideration. In this case:

SBeses P (n)P P += Note: The number of cycles should be given by the user, but, during the model/experiment comparisons, the

value n=2 gave satisfactory results in all the cases handled: this value shall be the default value.

Coefficient of performance in DHW production mode (COPDHW):

SBTAPPTAP

TAPTAPDHW

PCOP024,0EE

ECOP COP

++=

where:

• COPTAP, COP of the heat pump during the draw-off cycle, considered equal to: o 0.5 x (COP(40-45) + COP(47-55)) for XL cycles, o COP (47-55) or COP ((Tcmax – 5 °C)-Tcmax) for L cycles and less,

• ETAP, energy of the drawing cycle (in kWh)

• EP, static loss energy during the draw-off cycle (in kWh)

• PSB, the standby power (power input, in W)

The static loss energy EP is equal to EP = 0.024 x Pp where Pp is the static loss power defined in this document.

Reference hot water temperature (’WH, in °C):

T VV

40VTV '

21

2Cuve1WH +

+

+=

where:


75

e1 Vα)(1 V −= 0 V2 = if the restart of the HP is not allowed

+= - 10

V)-(160 10)-(TA (s)t e

Cuve0

If the probe is located in the upper half of the storage tank, then A is taken as 15 s/°C. If the probe is located in the lower half, A is taken as 0.

30*185,4

tP V 0

VMAX2 =

PVMAX is the heating capacity at the point 47-55 (in kW)

is the "HP start interval" (time during which the capacity is insignificant)

0 T = if the restart of the HP is not allowed

( )21

CuveBallon

VV185,4

40)(TM0,45)1( T

+

−−=

if the restart of the HP is allowed

The maximum effective hot water volume (VMAX):

( )

30

V3010TV V 2Cuve1

MAX

+−=

Example of simulation

The following table gives an example of final results obtained using the formulas.

Table C.3 Results of the simulation

Cases 1(L) 1(M) 2 3 Machine description data Declared volume of the tank (litre) Vn 200 200 300 Water volume of the tank (litre) Ve 190 190 285 Inner diameter of the tank (m) D 0.43 0.5 0.55 Total empty weight of the tank (kg) MTank 135 108 168 Mass of the exchanger (kg) MEch 20 20 20 Coefficient of static heat loss (Wh per 24h per 45°C)

QPR 3500 3500 2750

Alpha fraction (exchanger low point position) 0.25 0.25 0.25

Beta fraction (exchanger ratio) 0.85 0.94 0.85

Gamma fraction (restart probe position) 0.69 0.77 0.666 Probe high? Yes = 1; NO = 0 - 1 1 1

Restart of the HP in phase P4? YES = 1 − 1 1 1

Declared set-point temperature (°C) TC 55 55 55 Mean actual temperature (°C) TTank 55.2 55 56.2 Hysteresis (°C) THyst 5 5 10 Standby power (W) PSB 12 18 11 Draw-off data Energy of draw-off cycle - L M XL L Energy of draw-off cycle ETap (kWh) ETap 11.65 5.845 19.07 11.65 Power and COP data (Phases A, B, C, D according to EN 16147) Average power in phase A (kW) PDMT 4.82 6 6.14 Average COP in phase B (-) COPPes 2.11 2.11 2.17 Average COP in phase C(-) according to draw-off COPTAP 2.54 2.11 2.98 2.4 Average power in phase D (kW) PVMAX 5 5.61 5.5 Simulation data Heating-up time (hours) th 2.64 1.94 2.99 Spare capacity (W) Pes 75.0 89.0 61.3 Number of cycles (-) n 2 2 2 Coefficient of performance in DHW production mode (-) COPDHW 1.98 1.63 2.14 1.97

Reference hot water temperature (°C) ’WH 53.13 52.93 54.02

Maximum effective hot water volume (litre) VMAX 249.8 250.0 378.0 Intermediate verification data Cooling constant (Wh/24h.l.k) KR 0.388 0.388 0.204 Static loss power (W) PP 105.1 105.1 79.1 Fraction of hot area of the tank (-) fc 0.716 0.701 0.705


76

Drawn volume V1 (litre) V1 142.5 142.5 213.8 Drawn volume V2 (litre) V2 35.1 35.3 48.8

Temperature delta (°C) t 0.93 0.74 0.84

2.3.3 Measurement of reheating time

Measurement of the reheating time tR will be performed after measuring VMAX. The measurement method is defined according to:

• Tank temperature rise time until the shutdown of the thermodynamic generator(s), triggered by the system temperature controller

• Tapping in one go of the energy of the declared draw-off, with a tapping rate equal to the minimum rate of the declared draw-off

• Tank temperature rise time until the shutdown of the thermodynamic generator(s), triggered by the system temperature controller

• Reheating time is measured.

2.4 Conditions for validating declared values

2.4.1 Tests


• + 20 min for heating-up (th) and reheating (tR) times,

• + 10 % for spare capacities (Pes),

• - 10% for performance coefficients in DHW production mode (COPDHW and COPglobal) for a given tapping cycle.

• - 1 K for the reference hot water temperature (’WH),

• - 10% for the maximum volumes of usable hot water (VMAX) and mitigated water at 40°C (V40)

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

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.

Examples:

Machine tested

Machine not tested

Machine tested

Machine not tested

Machine tested

Machine not tested

Performance th COPDHW 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

2.4.2 Simulation

The applicable tolerances until the end of 2015 to declared values in the context of simulation are defined as follows:

• + 30 min for heating-up rise (th) and reheating (tR) times,

• Max(+ 15 %,15W) for spare capacities (Pes),

• - 15% for performance coefficients in DHW production mode (COPDHW) for a given tapping cycle.

• - 2 K for the reference hot water temperature (’WH),

• - 15% for the maximum volumes of usable hot water (VMAX) and mitigated water at 40°C (V40)

Analysis of the results must allow a revision of theses tolerances.

On the test appliance, each performance is simulated. For any simulated performance greater than the test result, the corresponding certified performance of all models, of all ranges of the dual-mode HP in question, is the simulated performance reduced by the deviation observed on this performance, corrected by the tolerance. Otherwise, the certified performance are the simulated performances.


77

3. QUALITY CONTROL SPECIFICATIONS

Storage tank

Components Inspections Characteristics Frequency Comments Item

Storage tank

All types

General appearance According to the internal procedure

In accordance with manufacturer inspection plan

Incoming goods/Production

Dimensional

Leaktightness (checks using air or water)

Control value as per the test protocol specified by the manufacturer

Stainless steel type

Anticorrosion treatment of welds

According to the internal procedure

Enamelling internal protective coating type

Monitoring of oven temperature

Monitoring of oven time

Coating thickness

General appearance

Other type of protective coating

Coating thickness According to the internal procedure

General appearance

Hydraulic exchangers

All types

General appearance According to the internal procedure


Incoming goods/Production

Dimensional

Leaktightness Control value as per the test protocol specified by the manufacturer



78

Storage tank (continued)

Components Inspections Characteristics Frequency Comments Item

Manufactured insulation

General appearance


On each batch consignment by sampling

Production

Incoming goods

Dimensional

Cohesion (except P.U. foam)

Density

Insulation injection during production

Injection time


By periodic sampling defined by manufacturer

Production

Foaming and creaming time

Density (weighing of a sample)

Temperature

General appearance

Dimensional

Control (if not incorporated in heat pump)

Control Functional (trigger threshold…) and dielectric tests


On each appliance

The functions can be tested using signal generators or on finished products.

Production/Finished product

Electrical safety

Resistance (case of systems equipped with electric heating element(s))

Testing as per NF EN 50106

Earth continuity

Dielectric strength

Operation

Leaktightness

On each appliance Production/Finished product

Electrical components

Visual inspection of components and assembly

As per parts list and assembly diagram in the technical file

On each appliance Production/Finished product


79

APPENDIX 3: PROVISIONS SPECIFIC TO GAS HP

CONTENTS

A. GENERAL REQUIREMENTS .............................................................. 80 A.1 Emissions of nitrogen oxides (NOx) ....................................................................80 A.2 Seasonal performance .......................................................................................80

B. gas absorption HPs ............................................................................ 80 B1 Technical specifications and characterisation methods ........................................80 B.2 Choosing the conditions to be tested – seasonal performance in heating mode ..81 B.3 Choosing the conditions to be tested – seasonal performance in cooling mode...82 B.4. Special characteristics of variable power regulation HPs ....................................82 B.5. Share of electrical power for the auxiliaries ........................................................83

C. Gas IC engine-driven HPs ................................................................. 83 C.1 Technical specifications and characterisation methods .......................................83 C.2. Special characteristics of variable power regulation HPs ...................................84 C.3. Share of electrical power for the auxiliaries ........................................................84

D. Gas EC engine-driven HP .................................................................. 85 D.1 Technical specifications and characterisation methods .......................................85 D.2 Choosing the conditions to be tested – seasonal performance in heating mode ..86 D.3 Choosing the conditions to be tested – seasonal performance in cooling mode ..87 D.4. Special characteristics of variable power regulation HPs ...................................88 D.5. Share of electrical power for the auxiliaries ........................................................88


80

A. GENERAL REQUIREMENTS

A.1 Emissions of nitrogen oxides (NOx)

Absorption gas PAC:

Multi-stage NOx measurements (70%, 60%, 40% and 20%) will be required to determine a weighted NOx value (according to NF EN 12309: March 2018).

HP gas to MCI: The NOx value to be determined is based on a motor rpm of 70, 60, 40 and 20% (partial load ratio) in heating mode (or cooling mode in the absence of heating mode) and weights equal to [0.15], [0.25], [0.30] and [0.30] respectively (according to the draft standard EN16905-2: 2018).

From revision 15, emissions of nitrogen oxides must be declared for all new applications (admission / additional admission / extension), for the PACs concerned (≤100kW).

These requirements are optional for PACs> 100kW.

From the 2018 follow-up tests, NOx emissions will have to be measured in monitoring for PACs ≤100kW and will be optional for PACs> 100kW.

If there is a discrepancy between the measured value and the value declared by the manufacturer, the declared value will be rerated: rerated value = measured value (laboratory).

A.2 Seasonal performance

As of revision 14, any new application (admission / additional admission / extension), for a gas cap ≤100kW, must include the declaration of seasonal performance and the corresponding test justifying the request. Above 100kW, the declaration of seasonal performance will be optional.

During the 2018 follow-up test, a gas cap will be tested without recatalogging. If the test is non-compliant, the manufacturer will need to review the performance for the entire range.

B. GAS ABSORPTION HPS

B1 Technical specifications and characterisation methods

Principles:

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

• GUE thresholds are set for certain operating points,


• For some types of heat pump, a cold start cycle is performed.

Operating ranges:

The operating ranges for each HP are declared by the applicant/holder and can be all or part (for example an operating point) of the performance matrices given below and taken from RT 2012 if applicable. The matrix lines declared by the applicant/holder (corresponding to the HP operating points) do not necessarily include the line featuring the RT 2012 pivot point.

However, as a minimum for the heating function, a certified point must correspond to an operating point with a GUE threshold defined in the matrices below.

Intermediate operating points (corresponding to intermediate columns of the matrices) relative to those provided by the performance matrices below may be declared for certification.

The lower upstream temperature limit is set at -15 °C for outdoor air.

Operating points at temperatures greater than those provided by the performance matrices below can be declared.

Note 1: as a reminder, if the pivot value is not certified, the certified characteristics cannot be validated under RT 2012. Note 2: the optional individual characteristics of variable regulation HPs are preferably determined at the pivot point. Note 3: when requested, the share of electrical power for the auxiliaries is preferably measured at the pivot point.

Test programme:

The test programme is defined for each case according to the HP type and declared operating range so as:

• To be able to verify the characteristics at the RT 2012 matrix pivot point if appropriate,

• To allow Eurovent Certita to select at least 1 operating point,

• To take account of any specific justified requests from the applicant.

The selection of the number of products to be tested in a range is defined in § 3.2.3.2.


81

In case of an admission application, for seasonal performance, the regular rules will be applied. Until the end of 2016, as part of follow-up, a test allow to check from two heat pump ranges with the same heat source already certified NF-Heat Pump in heating mode and, potentially in dual-mode.

The number of tests to be performed to certify the desired points of the performance matrix is a function of the number of downstream temperatures declared:

• For air/water HPs: 3 tests for a declared line and 1 test per additional line,

• For other HP types: 2 tests for a declared line and 1 test per additional line.

Note: When an applicant declares a number of operating points less than or equal to the number of tests to be performed, the number of tests to be performed is equal to the number of points declared (for example, the applicant can request one operating point for certification, and one test will be performed at the declared operating point).

If appropriate, the individual characteristics of variable capacity regulation HPs are determined at 1 operating point, at the pivot point conditions if declared.

If necessary, the share of electrical power for auxiliaries is determined at one operating point according to the pivot point conditions if declared.

Tolerances:


• max (5%; 20.5 * ΔT-0.89), for heating capacities measured for water and the corresponding GUE,

• 5% for heating capacities for air measured in steady state by the room calorimeter method and the corresponding GUE,

• 10% for heating capacities for air measured in transient regime (defrosting cycles) by the room calorimeter method and the corresponding GUE,

• 10% for heating capacities for air measured by the air enthalpy method and the corresponding GUE,

• - 10% for Pdesignh for air/water and ground/water HPs

• - 5% for Pdesignh for other HP types

• - 8% for SGUE, SPER and ηs.

Validation or rerating:

When a declared value complies with the measured value within the applicable tolerance, it is validated.

When a deviation is out-of-tolerance, a correction, called “rerating” is applied.

The details of rerating rules are specified in:

• in §3.1.3.8, applied here to the corresponding heating capacity, gas utilisation efficiency GUE, and power input

• in §3.1.3.8, applied here to Pdesignh and seasonal efficiency. Special test conditions:

For heat pumps within the scope of this appendix, the tests are performed according to standard EN 12309.


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

For heat pumps with air connections, the connection specifications defined for the sound tests (see Appendix AA) 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 relative pressure equal to 0.

B.2 Choosing the conditions to be tested – seasonal performance in heating mode

In average climate:

For a (glycol) water/water device with fixed flow rate setting and fixed temperature, only the rated point is necessary, the part load GUE being determined by the calculation:

o 10 °C or 0 °C (Rated point) o an auxiliary power among these three: Psb, Pto or Poff.

In other setting cases, the following are added:


82

o one point at part load

In average climate:

For an air/water device:

Low temperature (35°C), Average (45 °C),

High (55 °C), or Very High (65 °C)

Settings for the

water

Fixed flow

Fixed T

Variable flow

Fixed T

Fixed flow

Variable T

Variable flow

Variable T

E TOL

F Tbiv

A -7

B +2

C +7

D +12

For a given application (35 °C, 45 °C, 55 °C or 65 °C) and a given water setting, the power and GUE are tested at:

o F (Tbiv) to check consistency with Pdesignh. o 1 point among A, B, C, D or E (TOL) that is different from F (Tbiv). Comments: Tbiv<+2°C and TOL≤-7 °C o An auxiliary power among these three: Psb, Pto or Poff.

When two applications are declared, 3 points from the testable points are tested and when the 3 are declared, 4 points are tested. Only one auxiliary power is tested (e.g. Psb at low temperature, Pto at high temperature, or Poff at very high temperature).

For each additional water setting, the power and GUE are added at:

o 1 point among A, B, C, D or E (TOL), that is different from F (Tbiv)

When warm climate is added, the power and GUE are added at:

o 1 point per declared application. Comments: Tbiv<+7 °C and TOL=Tdesignh=+2 °C

When cold climate is added, the power and GUE are added at:

o One point for each declared application among: Tbiv or {TOL if TOL≥-20 °C} or {TOL or -15 °C if TOL<-20 °C}

o Another point per declared application. Comments: Tbiv<-7 °C, TOL<-15 °C and Tdesignh=-22 °C

If the device is declared at cold climate, a start-up test is included in the GUE measurement at a temperature ≤ -15 °C.

B.3 Choosing the conditions to be tested – seasonal performance in cooling mode

The same principle applies as for heating mode:

• without the notion of climate

• the point A is always tested

• there are only 3 other points B, C and D.

B.4. Special characteristics of variable power regulation HPs

The manufacturer shall send the laboratory the means to obtain the minimum continuous operation load ratio (LRcontmin) from his product under evaluation.


• The heating capacity so obtained is compared to the heating capacity obtained at the same operating point (pivot point of the matrix if declared) 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 GUE at LRcontmin is measured and validated, the CcpLRcontmin is then calculated and validated.

Notes: LRcontmin is defined relative to the declared heating capacity at full load at the same operating points.

CcpLRcontmin corresponds to the ratio of GUE at LRcontmin and GUE at full load at the same operating temperatures.


83

B.5. Share of electrical power for the auxiliaries

The share of the electrical power for the auxiliaries in the total electrical power (Ratio) is the ratio between these two powers.

The power input of the auxiliaries is measured as per § 4.6.2 of EN 12309-4.

C. GAS IC ENGINE-DRIVEN HPS

C.1 Technical specifications and characterisation methods

Principles:




• For some types of heat pump, a cold start cycle is performed. Operating ranges:

The operating ranges for each HP are declared by the applicant/holder and can be all or part (for example an operating point) of the performance matrices given below.





Test programme:







• For other HP types: 2 tests for a declared line and 1 test per additional line. Note 1: When an applicant declares a number of operating points less than or equal to the number of tests to be performed, the

number of tests to be performed is equal to the number of points declared (for example, the applicant can request one operating point for certification, and one test will be performed at the declared operating point).

If appropriate, the individual characteristics of variable capacity regulation HPs are determined at 1 operating point.

If applicable, the share of electrical power of the auxiliaries is determined at 1 operating point.

Conditions for validation of declared values for heating capacities:

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


• 5% for the heating capacities measured for water and the corresponding GUE,


• 10% for heating capacities for air measured in transient regime (defrosting cycles)

• by the room calorimeter method and the corresponding GUE,


If the declared values do not comply with the measured values, they are reset to the measured values, corrected by the applicable tolerance.

For 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 non-compliant measured values (see example below).


84

Example of validation of declared values Air/water HP Comparison between declared and measured powers (kW)

Downstream temperature (°C)

Upstream temperature (air side) (°C)

T flow

(°C)

T return

(°C)

-7 2 7

Declared

Measured

Difference (%)

Declared

Measured

Difference

Declared

Measured

Difference

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.

• Mean relative differences with respect to compliance thresholds: (5.7+2.5+3.3)/3= 3.8 % New corrected matrix:

Downstream temperature (°C)

Upstream temperature (air side) (°C)

T flow (°C)

T return (°C)

-7 2 7

Declared

Measured

Validated Declared

Measured

Difference

Declared

Measured

Validated

35 30 4.20 4.00 4.80 3.40 3.30 7.20 6.60 6.90

45 40 4.00 3.70 3.90 2.80 2.50 2.60 7.40 7.10

Special test conditions:

For heat pumps covered by this appendix, the tests are conducted according to the test protocol defined in Part 10 Appendix AE.


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.



C.2. Special characteristics of variable power regulation HPs



• The heating capacity obtained in this way is compared to the heating capacity obtained at the same operating point 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.

Note: LRcontmin is defined relative to the declared heating capacity at full load at the same operating points.

CcpLRcontmin corresponds to the ratio of GUE at LRcontmin and GUE at full load at the same operating temperatures.

C.3. Share of electrical power for the auxiliaries


85

The share of the electrical power for the auxiliaries in the total electrical power (Ratio) is the ratio between these two powers.

The electrical power for the auxiliaries is measured with the appliance in standby mode according to the provisions of standard Pr NF EN 14825.

D. GAS EC ENGINE-DRIVEN HP

D.1 Technical specifications and characterisation methods

Principles:




• For some types of heat pump, a cold start cycle is performed.

Operating ranges:

The operating ranges for each HP are declared by the applicant/holder and can be all or part (for example an operating point) of the performance matrices given below and taken from RT 2012 if applicable. The matrix lines declared by the applicant/holder (corresponding to the HP operating points) do not necessarily include the line featuring the RT 2012 pivot point.





Note 1: as a reminder, if the pivot value is not certified, the certified characteristics cannot be validated under RT 2012. Note 2: the optional individual characteristics of variable regulation HPs are preferably determined at the pivot point. Note 3: when requested, the share of electrical power for the auxiliaries is preferably measured at the pivot point.

Test programme:


• To be able to verify the characteristics at the RT 2012 matrix pivot point if appropriate,






• For other HP types: 2 tests for a declared line and 1 test per additional line.

Note: When an applicant declares a number of operating points less than or equal to the number of tests to be performed, the number of tests to be performed is equal to the number of points declared (for example, the applicant can request one operating point for certification, and one test will be performed at the declared operating point).

If appropriate, the individual characteristics of variable capacity regulation HPs are determined at 1 operating point, at the pivot point conditions if declared.

If necessary, the share of electrical power for auxiliaries is determined at one operating point according to the pivot point conditions if declared.

Tolerance:


• max (5%; 20.5 * ΔT-0.89), for heating capacities measured for water and the corresponding GUE,


• 10% for heating capacities for air measured in transient regime (defrosting cycles) by the room calorimeter method and the corresponding GUE,


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• - 10% for Pdesignh for air/water and ground/water HPs

• - 5% for Pdesignh for other HP types

• - 8% for SGUE, SPER and ηs.

Validation or rerating:

When a declared value complies with the measured value within the applicable tolerance, it is validated.

When a deviation is out-of-tolerance, a correction, called “rerating” is applied.

The details of rerating rules are specified in:

• in §3.1.3.8, applied here to the corresponding heating capacity, gas utilisation efficiency GUE, and power input

• in §3.1.3.8, applied here to Pdesignh and seasonal efficiency. Special test conditions:

For heat pumps within the scope of this appendix, the tests are performed according to standard EN12309.



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 relative pressure equal to 0.

D.2 Choosing the conditions to be tested – seasonal performance in heating mode

For the purpose of calculating the reference seasonal performance in heating mode, three reference climatic conditions are defined: average (A), the warmest (W) and the coldest (C).

The outdoor temperature values for the relevant reference design for heating (Tdesign h) and the bivalent temperature values (Tbivalent) are defined as below:

Reference heating season Dry temperature conditions

Tdesign h Upper limit of Tbivalent

Average (A) -10°C +2°C

Warmest (W) +2°C +7°C

Coldest (C) -22°C -7°C

For bivalent appliances, Tbivalent can be any value between Tdesign h and the upper value of Tbivalent. Once Tbivalent is defined in dry temperature conditions, the corresponding wet temperature must be calculated as the dry temperature less 1 K. For monovalent appliances, Tbivalent must be assumed to be equal to Tdesign h.

For air/water appliances, the declared limit operating temperature (TOL) of the heat pump appliance must also be

taken into account. A TOL above Tdesign h is an acceptable condition for bivalent appliances only. If the TOL is less than Tdesign h, the TOL can be assumed to be equal to Tdesign h.

Part load conditions O, A, B, C and D provide the part load ratios and the temperature test conditions at four reference dry bulb temperatures of outdoor air: −15 °C, −7 °C, +2 °C, +7 °C and +12 °C.

The part load conditions E and F provide the part load ratios and the temperature test conditions at the limit outdoor operating temperature of the appliance (TOL) and at the outdoor bivalent temperature of the appliance (Tbivalent), respectively.

The part load ratio corresponding to a given outdoor temperature Tj is defined using the formula below:

PLRh(Tj) =Tj − 16

Tdesign h − 16

Under part load conditions for which the outdoor temperature is less than or equal to the defined temperature Tbivalent , the declared capacity of the appliance is less than or equal to the required heat load. In this condition, the appliance operates at its maximum capacity and the difference between the heat load and the declared capacity of


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the appliance is covered by an auxiliary gas boiler. The GUEh and the AEFh are used at full power. (See Annex D EN 12309-6, Calculation of the reference seasonal performance in heating mode for bivalent appliances).

In part load condition Tbivalent (F), the declared capacity of the appliance corresponding to the required heat load. In this condition, the appliance operates at its maximum capacity and the power of the gas-fired auxiliary heating system (where applicable) is switched off. The GUEh and the AEFh are used at full power.

In any other part load condition, the declared capacity of the appliance is higher than the building load. As a result, the gas-fired auxiliary heating system (where applicable) is stopped and the load ratio (CR) of the appliance, i.e. the ratio of the heat load (Ph) to the declared capacity (DC) of the appliance is less than 1, under the same temperature conditions. The GUEh and the AEFh are influenced by the temperature test conditions and by the load ratio. The methods for determining the GUEh and the AEFh are set out in EN 12309-4.

The part load conditions for each type of appliance (air/water, water/water and glycol water/water), reference heating season (average, warmest, coldest) and application temperatures (low temperature, medium temperature, high temperature, very high temperature) are given in the tables of test point conditions in standard EN12309-6.

The appliances that allow varying the temperature of the outlet water with the outdoor temperature as well as those that do not allow it are taken into account. The model of variable outlet temperature test points in the following tables should only be applied when the programming unit provides a change in the outlet temperature as a function of the temperature of the outdoor air.

In average climate:

For a (glycol) water/water device with fixed flow rate setting and fixed temperature, only the rated point is necessary, the part load GUE being determined by the calculation:

o 10°C or 0°C (Rated point), o an auxiliary power among these three: Psb, Pto or Poff.

In other cases, the following are added:

o a point at part load.

In average climate:


Low temperature (35°C), Average (45°C),

High (55°C), or Very High (65°C)

Settings

on water

Fixed flow

Fixed T

Variable flow

Fixed T

Fixed flow

Variable T

Variable flow

Variable T

E TOL

F Tbiv

A -7

B +2

C +7

For a given application (low, average, high, or very high temperature) and a given water setting, the power and the GUE are tested at:

o F (Tbiv) to check consistency with Pdesignh, o 1 point among A, B, C, D or E (TOL) that is different from F (Tbiv). Comments: Tbiv<+2°C and TOL≤-7°C o An auxiliary power among these three: Psb, Pto or Poff.

When two applications are declared, 3 points from the testable points are tested and when the 3 are declared, 4 points are tested. Only one auxiliary power is tested (e.g. Psb at low temperature, Pto at high temperature, or Poff at very high temperature).

For each additional water setting, the power and GUE are added at:

o 1 point among A, B, C, D or E (TOL) that is different from F (Tbiv).

When warm climate is added, the power and GUE are added at:

o 1 point per declared application. Comments: Tbiv<+7°C and TOL=Tdesignh=+2°C.

When cold climate is added, the power and GUE are added at:

o One point for each declared application among: Tbiv or {TOL if TOL≥-20°C} or {TOL or -15°C if TOL<-20°C}

o Another point per declared application. Comments: Tbiv<-7°C, TOL<-15°C and Tdesignh=-22°C.

If the device is declared at cold climate, a start-up test is included in the GUE measurement at a temperature ≤ -15°C.

D.3 Choosing the conditions to be tested – seasonal performance in cooling mode


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The same principle applies as for heating mode:

• without the notion of climate

• the point A is always tested

• there are only 3 other points B, C and D.

Part load conditions A, B, C, D provide the part load ratios and the temperature test conditions at four reference dry bulb temperatures of outdoor air: 35 °C, 30 °C, 25 °C and 20 °C. The part load ratio corresponding to a given outdoor temperature Tj is defined using the formula below:

PLRc(Tj) =Tj − 16

35 − 16

In part load condition A, the declared capacity of the appliance is assumed to be equal to the building load (i.e. load ratio = 100%). In any other part load conditions B, C and D, the declared capacity of the appliance is higher than the building load. As a result, the load ratio (CR), i.e. the ratio of the cooling load (Pc) to the declared capacity (DC) of the appliance is less than 1, under the same temperature conditions.


Outdoor heat exchanger

Indoor heat exchanger

Dry bulb

temperature of the air

Fan-convector

Underfloor cooling Fixed output

Variable output

A 35 12/7 12/7 23/18

B 30 -/7 -/8.5 -/18

C 25 -/7 -/10 -/18

D 20 -/7 -/11.5 -/18

For a water/water and glycol water/water device:

Outdoor heat exchanger Indoor heat exchanger

Application cooling tower

Application Earth-to-air heat exchanger

Application dry

cooler

Fan-convector Underfloor cooling Fixed output Variable output

A 30/35 10/15 50/55 12/7 12/7 23/18

B 26/- 10/- 45/- -/7 -/8.5 -/18

C 22/- 10/- 40/- -/7 -/10 -/18

D 18/- 10/- 35/- -/7 -/11.5 -/18

D.4. Special characteristics of variable power regulation HPs


LRcontmin = Minimum continuous operation load heating capacity / Heating capacity declared and/or measured under pivot point conditions


• The heating capacity so obtained is compared to the heating capacity obtained at the same operating point (pivot point of the matrix if declared) 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 GUE at LRcontmin is measured and validated. The CcpLRcontmin is then calculated and validated, as follows: CcpLRcontmin = GUE at LRcontmin / GUE at pivot point

D.5. Share of electrical power for the auxiliaries

The standby electrical power (Psb) is measured with the appliance in standby mode according to the provisions of standard EN 12309-4. 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.

Measuring the power consumption in thermostat off mode (Pto)

In cooling mode (for cooling appliances only or reversible devices), the thermostat set point is increased until the burner stops. Power consumption is measured over a period of at least 1 hour to determine the power when shut


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down by thermostat. The same principle applies in heating mode, but the thermostat set point must be reduced until the burner stops.

Measuring the power consumption in standby mode (Psb)

The appliance is shut down with the control device. After 10 minutes, the power consumption is measured for a period of at least 1 hour and is assumed to be the power consumption in standby mode.

Measuring the power consumption in off mode (Poff)

After testing the power consumption in standby mode, the appliance should be placed in off mode while leaving it connected and supplied with power. After 10 minutes, the power consumption is measured for a period of at least 1 hour and is assumed to be the power consumption in off mode. If the appliance has no switch for the off mode, the electric current in standby mode is assumed to be equal to the electric current in off mode.

DRAFT


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APPENDIX 4 - SOUND TESTS

CONTENTS

1. HEAT PUMP INSTALLATION CONFIGURATIONS ................... 91

Diagram key .............................................................................................. 91 1.1 Outdoor air – water HP ............................................................................. 91

1.1.1 Single unit – outdoor installation ................................................ 91 1.1.2 Single unit – indoor installation .................................................. 91 1.1.3 Split system ............................................................................... 92

1.2 Water-air recycled HP ............................................................................... 92 1.2.1 Single unit – outdoor installation ................................................ 92 1.2.2 Single unit – Indoor installation with duct to outside air ............... 92 1.2.3 Single unit – Indoor installation with free discharge .................... 92 1.2.4 Split system with ducted indoor unit ........................................... 93 1.2.5 Split with unducted indoor unit ................................................... 93

1.3 Outdoor air – recycled air HP .................................................................... 93 1.3.1 Non ducted single unit – indoor installation ................................ 93 1.3.2 Single unit – indoor installation .................................................. 94 1.3.3 Single unit – outdoor installation ................................................ 94 1.3.4 Unducted split............................................................................ 94 1.3.5 Ducted split ............................................................................... 94 1.3.6 Multisplit system with unducted indoor units ............................... 95 1.3.7 Multisplit system with ducted indoor units ................................... 95

1.4 Exhaust air – fresh air HP ......................................................................... 95 1.4.1 Ducted single unit – indoor installation ....................................... 95

1.5 Exhaust air – water HP ............................................................................. 96 1.6 Water-water or ground-water or ground-ground HP ................................... 96 1.7 Water - ground HP .................................................................................... 96 1.8 Outdoor air – ground HP ........................................................................... 96

2. Special installation conditions.................................................. 96 2.1 Continuous variable capacity heat pumps ................................................. 96 2.2 Air ducting ................................................................................................ 96 2.3 Space heating HP ..................................................................................... 97 2.4 Swimming pool HPs .................................................................................. 97

3. Measurement resolution ............................................................ 97


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When selecting products from a heat pump range to determine the thermal performance (see Para. 3.1.3.2), just one of these products is used for the sound tests. When a heat pump range may be used either with water or water-glycol mix, the sound tests are carried out with the Glycol-Water Mix appliance. Eurovent Certita will study the influence of the integrated options if necessary when selecting the products, together with the laboratory.

Special cases:

It is possible to test for a range of other appliances. For example for heat pumps with optional components or for multi-split heat pumps, so that each type of indoor unit can be taken into consideration.

1. HEAT PUMP INSTALLATION CONFIGURATIONS

The system configurations are defined according to:

• the heat sources: water or air

• the HP configuration: single-unit or split

• free air discharge or ducted unit

• the location of the heat pump: indoor or outdoor installation.

An exhaustive analysis is therefore conducted, even though certain configurations may not exist on the current market. For each of these configurations presented in a diagram, the required sound measurements are specified.

When the heat pump may be sold with a separate hydraulic kit, the kit itself is not subject to the sound tests.

For mono and multisplit systems (indoor air units), the sound power radiated by each type of indoor air unit (sill, wall, ceiling, etc.) is measured at high speed, in ventilation mode only (without operation of the refrigeration part). The low speed measurement may be taken at the applicant’s request and will form part of the certified features.

The manufacturer shall provide the laboratory with the procedure enabling the operation of the indoor unit(s) in ventilation mode only, without starting up the refrigeration circuit of the outdoor unit.

DIAGRAM KEY

• water circuit: in blue

• air connection: in red

• refrigerant connection: in black

1.1 OUTDOOR AIR – WATER HP

1.1.1 Single unit – outdoor installation

Outside: casing noise. Inside: no measurement. Test equipment: reverberation room or intensity method.

1.1.2 Single unit – indoor installation

Outside: “overall” noise of both air suction and discharge openings. Inside: noise radiated by the casing. Test equipment: double reverberation room.


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1.1.3 Split system

Outside: noise radiated by the casing of the outdoor unit. Test equipment: double reverberation room or intensity method. Inside: noise radiated by the casing of the indoor unit. Test equipment: double reverberation room.

1.2 WATER-AIR RECYCLED HP


Outside: noise radiated by the casing. Inside: overall airborne noise in the suction and discharge ducts. Test equipment: double reverberation room.

1.2.2 Single unit – Indoor installation with duct to outside air

Outside: no measurement.

Inside: - Airborne noise in the suction duct; - Airborne noise in the discharge duct. Test equipment: Double reverberation room.

1.2.3 Single unit – Indoor installation with free discharge

Outside: no measurement. Inside: noise radiated by the casing. Test equipment: reverberation room or intensity method.


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1.2.4 Split system with ducted indoor unit

Outside: noise radiated by the casing of the outdoor unit. Inside (in ventilation mode only):

➢ For indoor units with suction and discharge ducts: - airborne noise in the suction duct; - airborne noise in the discharge duct.

➢ For indoor units with discharge ducts only: - airborne noise in the suction duct measured at the same time as the noise radiated by the

casing. - airborne noise in the discharge duct.

Test equipment: double reverberation room.

NB: With a double reverberation room, during measurement of the noise radiated by the OU, the IU is fitted with its ducts, but they are not connected to a plenum. The aeraulic operating point of the IU with its ducts must be checked.

1.2.5 Split with unducted indoor unit

Outside: noise radiated by the casing of the outdoor unit. Inside (in ventilation mode only): noise radiated by the casing of the indoor unit. Test equipment: double reverberation room.

1.3 OUTDOOR AIR – RECYCLED AIR HP

1.3.1 Non ducted single unit – indoor installation

Outside: “overall” noise of both air suction and discharge openings. Inside: noise radiated by the casing. Test equipment: double reverberation room.


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1.3.2 Single unit – indoor installation

Outside: overall noise of both air suction and discharge openings. Inside: - airborne noise in the suction duct;

- airborne noise in the discharge duct. Test equipment: double reverberation room.


Outside: noise radiated by the casing. Inside: airborne noise in the suction and discharge ducts. Test equipment: double reverberation room.

1.3.4 Unducted split

Outside: noise radiated by the casing of the outdoor unit. Inside (in ventilation mode only): noise radiated by the casing of the indoor unit. Test equipment: double reverberation room.

1.3.5 Ducted split

Outside: noise radiated by the casing of the outdoor unit. Inside (in ventilation mode only):


➢ For indoor units with discharge ducts only: - suction noise measured at the same time as the noise radiated by the casing. - airborne noise in the discharge duct.



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Note: With a double reverberation room, during measurement of the noise radiated by the OU, the IU is fitted with its ducts, but they are not connected to a plenum. The aeraulic operating point of the IU with its ducts must be checked.

1.3.6 Multisplit system with unducted indoor units

Outside: noise radiated by the casing of the outdoor unit. Inside (in ventilation mode only): noise radiated by the casing of each type of indoor unit. Test equipment: double reverberation room.

1.3.7 Multisplit system with ducted indoor units

This diagram shows the configuration for the OU test.

The indoor units are the same model and obviously have the same heating capacity. Outside: noise radiated by the casing of the outdoor unit. Inside (in ventilation mode only):


➢ For indoor units with discharge ducts only: - suction noise measured at the same time as the noise radiated by the casing. - airborne noise in the discharge duct.


1.4 EXHAUST AIR – FRESH AIR HP

1.4.1 Ducted single unit – indoor installation

Outside: overall noise of both air suction and discharge openings. Inside: - airborne noise in the suction duct; - airborne noise in the discharge duct. Test equipment: double reverberation room. NB: With a double reverberation room, when the casing noise is being measured, the ducts are connected to a small plenum and the thermal condition on the exhaust air (20 °C) may not be reached.


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1.5 EXHAUST AIR – WATER HP

Outside: airborne noise in the discharge ducts Inside: airborne noise in the suction duct measured at the same time as the noise radiated by the casing. Test equipment: double reverberation room.

1.6 WATER-WATER OR GROUND-WATER OR GROUND-GROUND HP

All the heat pumps are packaged type units and can be installed indoors or outdoors. Outside or inside: casing noise.

Test equipment: reverberation room.

1.7 WATER - GROUND HP

The installation and test configuration details are specified in Appendix AE.

1.8 OUTDOOR AIR – GROUND HP

The installation and test configuration details are specified in Appendix AE.

2. SPECIAL INSTALLATION CONDITIONS

2.1 CONTINUOUS VARIABLE CAPACITY HEAT PUMPS

Energy performance (special test conditions)

To determine the sound power levels, the laboratory must adjust the compressor frequency to ±3 Hz and the fan rotation speed to ± 4% of the values measured during the thermal tests. If the frequency and/or speed deviation is not met, the laboratory will request that the manufacturer adjust the machine to obtain these values before undertaking the sound measurements.

Nevertheless, should it not be possible for the tolerance on the fan speed to be met by higher value, and the sound measurement result remains below the value declared by the manufacturer, increased by 2 dB, the heat pump is not refused the NF mark.

2.2 AIR DUCTING

The air ducts must have the following features:

1. the smallest possible length and the test must be carried out under the same conditions as the thermal points. Materials: - rectangular duct in 12/10ths sheet or any other material of similar surface density, or - circular duct: rolled galvanised duct, or any other material of similar surface density, In all cases, the ducts must not include absorbing material on the inside, 2. identical cross-section to the HP's discharge or suction cross-section (generally rectangular duct for outdoor air and circular duct for recycled air).

Outside

1. the available pressure is the resulting pressure obtained with these installation characteristics 2. the ducts are not equipped with grids or terminal outlets. 3. If the unit and test room configuration requires the installation of elbows, priority must be given to a symmetrical

configuration for the overall noise measurement of the suction inlets and discharge outlets (outdoor side), with an elbow on every duct if necessary. In this case, if the total angle of a duct is greater than 90°, each elbow making it up must not exceed 90°. The total length of each duct may exceed 1m.

Inside

4. The static pressure on the indoor side is obtained by adjusting the pressure difference between the two reverberation rooms (value according to the capacity).


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5. For heat pumps ducted on suction and blowing, a length of 1 m of rectangular duct shall be used for the ducting on the outdoor side. The length of the duct for the indoor side will depend on the other installation conditions such as the dimensions of the reverberation room.

The assembly of the heat pump with its ducts may be difficult to describe in the test report. In this case, the laboratory must take photos of the installation assembly, attach them to the test report and keep them in the test file.

2.3 SPACE HEATING HP

The sound tests are carried out under the chosen application conditions for the energy performance. Regarding a range for which several applications are requested, the sound test is carried out under the conditions corresponding to the last application requested, which presents the highest temperature conditions. For outdoor air heat pumps, the sound test is performed at an outdoor air temperature of 7(6) °C.

2.4 SWIMMING POOL HPS

For “outdoor air-to-water” type swimming pool heat pumps, the sound test is performed at an outdoor air temperature of 15(12) °C and for the water temperature of the swimming pool heating system depending on whether the HP operates with low or high water flow. For a heat pump range that can be installed (as it is or with optional equipment) indoors or outdoors, two test configurations are required:

Outdoor configuration: the heat pump operates without ducts, with an available pressure that is nil at discharge, and its radiated noise is measured (according to diagram § AA.2.1.1):

• outside: casing noise.

• inside: no measurement.

Indoor configuration: the HP is ducted according to § AA.3.2

If the available pressure stated by the manufacturer is 25 Pa, then the pressure available at 0 is set (see special test conditions in § A.4 or B.4). Otherwise, the available pressure is set at the maximum value Pmax supplied by the manufacturer. The following measurements are made (according to diagram § AA.2.1.2):

• outside: “overall” noise of both air suction and discharge openings.

• inside: noise radiated by the casing.

3. MEASUREMENT RESOLUTION

The measurement of the sound power level is stated at 1/10th dB.

Certification technical standard NF 414 Revision 15 – December 2018

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APPENDIX 5 GROUND – GROUND, WATER – GROUND AND OUTDOOR AIR – GROUND

HP TESTS

CONTENTS

Introduction ...................................................................................................... 99

1. Ground-ground heat pumps ............................................................. 99 1.1 Product description ............................................................................................. 99 .1.2 Energy performance ..................................................................................... 99 1.3 Acoustic performance ................................................................................ 100

2. Water-ground heat pumps ...............................................................100 2.1 Product description ........................................................................................... 100 2.2 Energy performance ................................................................................... 100 2.3 Acoustic performance ................................................................................ 101

3. Air-ground heat pumps ....................................................................102 3.1 Product description ........................................................................................... 102 3.2 Energy performance ................................................................................... 102 3.3. Sound performance ......................................................................................... 103


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INTRODUCTION

Ground-ground, water–ground, outdoor air-ground type heat pumps fall outside the scope of a standard for determining the thermal performance of heat pumps.

This exclusion is related to the test method which is very different from those described in the European standard and applicable for heat pumps using air and water as heat transfer fluids.

Pending the preparation and publication of a European standard for these special appliances (CEN TC113 WG10 work), the test protocol below is applied for the certification of ground-ground, water – ground, outdoor air – ground type heat pumps with respect to the heat pump NF mark.

1. GROUND-GROUND HEAT PUMPS

1.1 Product description

Ground-ground heat pumps comprise:

• A module containing the compressor, expansion device, refrigeration accessories and regulation parts

• An evaporator: exchanger made up of a series of polyethylene coated copper tube crowns (in general).

• A condenser: exchanger made up of a series of polyethylene coated copper tube crowns (in general).

.1.2 Energy performance

The evaporator crowns are unwound on wooden supports at a height of around 1.20 m in a first climatic room. The dry temperature of this climatic room is adjusted and controlled so as to maintain the required evaporation temperature.

The evaporator crowns are unwound on wooden supports at a height of around 1.20 m in a second climatic room. The dry temperature of this climatic room is adjusted and controlled so as to maintain the required condensation temperature.

A flow meter is installed upstream of the condenser to measure the flow of liquid refrigerant. This will make it possible to calculate the condenser capacity.

Measuring the discharge pressure and liquid pressure associated with the temperatures taken at the same place enables the enthalpies of the liquid refrigerant to be determined. If the machine does not present any liquid pressure tapping, the discharge pressure will be measured to calculate both enthalpies.

The module is installed in an environment at room temperature.

The manufacturer’s qualified personnel connect the evaporator and condenser crowns to the module and load with liquid refrigerant.

Instruments include:

• an electrical meter upstream of the machine general power supply

• pressure sensors to measure the suction and discharge pressures and liquid pressure where applicable

• Contact probes (PT100) to measure the discharge, liquid and suction temperatures.

The water temperature measurement uncertainty also applies to the measurement of liquid refrigerant temperatures.

The tolerances admitted on the evaporation and condensation temperatures are given in the table below:

Admissible deviation on the arithmetic mean from the set-point value

Admissible deviation on the individual values from the set-point value

Liquid refrigerant temperature

0.2 K (*)

(*): the test method has a significant influence on the machine operating stability during testing. This value is thus inherent to the machine. Therefore, it cannot be quantified.


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The heating capacity of the condenser is calculated with the formula:

Pf cond = qm ff * (h ref – h liq)

Where: qm ff = flow of liquid refrigerant in kg/s

h ref = enthalpy corresponding to the discharge pressure in kJ/kg

h liq = enthalpy corresponding to the liquid temperature in kJ/kg

The COP is calculated as follows:

COP = Pf Cond / Pelec

Where: Pf Cond in kW

Pelec in kW

1.3 Acoustic performance

The sound tests are conducted in a reverberation room according to standard NF EN ISO 3741: "Determination of sound power levels of noise sources – Precision methods for broad-band sources in reverberation rooms." under the rated thermal conditions.

They involve measuring the sound power levels by one-third octave bands between 100 and 10,000 Hz as well as the A weighted global sound power level.

1.3.1 Operating conditions

The tests only cover the HP module.

The test conditions are those described in appendices A and B of this reference standard.

In the case of tests according to the two applications for the ground-water heat pumps, the test conditions of the “fan-convector” application are selected for the sound test.

1.3.2 Installation and test methods

The module is placed in a reverberation room. The evaporator crowns are replaced by a water exchanger placed in a second reverberation room.

The condenser is connected to a water circuit with controlled flow rate and temperature. The same suction pressure/temperature as that obtained at the thermal point is set, as well as the same liquid temperature.

2. WATER-GROUND HEAT PUMPS


The outdoor exchanger (evaporator) is connected to the water, while the condenser is placed directly in the ground of the indoor environment.

A Ground-Water heat pump may be of different types:

• single-unit: the compressor, expansion device and water exchanger are within the same body (a single module), with the condenser crowns separate of course,

• split: the compressor and/or expansion device and/or water exchanger are not within the same body (several modules), and the condenser crowns are of course separate.

2.2 Energy performance

The module(s) is(are) installed in an environment at room temperature and connected to a water loop enabling the required water conditions to be maintained.

The condenser crowns are unwound on wooden supports at a height of around 1.20 m in a climatic room. The dry temperature of this climatic room is adjusted so as to maintain the required condensation temperature.


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A flow meter is installed upstream of the condenser to measure the flow of liquid refrigerant. This will make it possible to calculate the condenser capacity. Loops are made at each end of the flow meter to reduce vibration phenomena of the discharge pipes.

Note: The flow meter will be assembled, as far as possible, in the same environment at room temperature as the module(s).

Otherwise, the liquid refrigerant condensation pressure is measured at the compressor discharge and downstream of the crown outlet collector. Should the machine not present any pressure tapping at these points, the condensation pressure will be measured at the flow meter (placed by the laboratory upstream of the crown inlet collector). This value will also be referred to as the floor outlet pressure measurement (and the loss of load of the condenser crowns will therefore be overlooked).

The liquid refrigerant temperatures are measured upstream of the crown inlet collector (floor inlet) and downstream of the crown collector (floor outlet), with consideration of the heating capacity transmitted in the floor only.

The manufacturer’s qualified personnel connect the condenser crowns to the module(s) and load with liquid refrigerant.

The following quantities are measured during the test:

• compressor suction pressures and floor collector inlet and outlet pressures (if available, otherwise see above),

• compressor suction temperatures, floor collector inlet and outlet temperatures,

• liquid refrigerant flow,

• water inlet and outlet temperatures,

• loss of load or pressure available on the water,

• water flow,

• electrical power absorbed,

• liquid refrigerant load and type of liquid.

The tolerances admitted on the condensation temperatures are given in the table below:

Admissible deviation on the arithmetic mean

from the set-point value Admissible deviation on the individual values

from the set-point value


0.3 K (*)



)hh(*qmPf sortentffcond −=


h ent = enthalpy corresponding to the floor inlet pressure in kJ/kg

h sort = enthalpy corresponding to the floor outlet temperature in kJ/kg


Pelec

PfCOP cond=

Where: Pfcond in kW

Pelec in kW

2.3 Acoustic performance




Heat Pump - NF mark

102

2.3.1 Operating conditions

The tests are only conducted on the heat pump module, comprising at least the compressor.


2.3.2 Installation and test methods

The module is placed in a reverberation room.

The condenser crowns are replaced by a water exchanger placed in a second, adjacent reverberation room and connected to a water loop with set temperature and flow. The same floor inlet and outlet pressures/temperatures are therefore set as those obtained during the thermal test.

The evaporator is connected to a water circuit with controlled temperature and flow to set the test conditions.

3. AIR-GROUND HEAT PUMPS


An Air/Ground heat pump may be of different types:

• single-unit: the compressor, expansion device and air exchanger are within the same body (a single module), with the condenser crowns separate of course,

• split: the compressor and/or expansion device and/or air exchanger are not within the same body (several modules), and the condenser crowns are of course separate.

3.2 Energy performance

The air exchanger module is installed in a climatic room in which the dry and wet temperatures are set and controlled so as to maintain the required conditions.

For a split machine, module(s) other than the air exchanger are installed at room temperature.

The condenser crowns are unwound on wooden supports at a height of around 1.20 m in a climatic room. The dry temperature of this climatic room is adjusted so as to maintain the required condensation temperature.

A flow meter is installed upstream of the condenser to measure the flow of liquid refrigerant. This will make it possible to calculate the condenser capacity. Loops are made at each end of the flow meter to reduce vibration phenomena of the discharge pipes.

Note: The flow meter will be assembled, wherever possible, in an environment at room temperature.

Otherwise, the liquid refrigerant condensation pressure is measured at the compressor discharge and downstream of the crown outlet collector. Should the machine not present any pressure tapping at these points, the condensation pressure will be measured at the flow meter (placed by the CETIAT upstream of the crown inlet collector). This value will also be referred to as the floor outlet pressure measurement (and the loss of load of the condenser crowns will therefore be overlooked).

The liquid refrigerant temperatures are measured upstream of the crown inlet collector (floor inlet) and downstream of the crown collector (floor outlet), with consideration of the heating capacity transmitted in the floor only.

The manufacturer’s qualified personnel connect the condenser crowns to the module(s) and load with liquid refrigerant.

The following quantities are measured during the test:

• compressor suction pressures and floor collector inlet and outlet pressures (if available, otherwise see above),

• compressor suction temperatures, floor collector inlet and outlet temperatures,

• liquid refrigerant flow,

• incoming dry and wet temperatures of the evaporator on the air,

• rotation speed of the fan(s),

• electrical power absorbed,

• liquid refrigerant load and type of liquid.


Heat Pump - NF mark

103

The tolerances admitted on the condensation temperatures are given in the table below:

Admissible deviation on the arithmetic mean

from the set-point value Admissible deviation on the individual values

from the set-point value


0.3 K (*)



)hh(*qmPf sortentffcond −=


h ent = enthalpy corresponding to the floor inlet pressure in kJ/kg

h sort = enthalpy corresponding to the floor outlet temperature in kJ/kg


Pelec

PfCOP cond=

Where: Pf Cond in kW

Pelec in kW

3.3. Sound performance



3.1 Operating conditions

The tests are only conducted on the heat pump module(s) containing the compressor and air evaporator.


3.2 Installation and test methods

The module is placed in a reverberation room.

The condenser crowns are replaced by a water exchanger placed in a second, adjacent reverberation room and connected to a water loop with set temperature and flow. The same floor inlet and outlet pressures/temperatures are therefore set as those obtained during the thermal test.

The air evaporator is placed in a reverberation room with temperature control so as to set the desired atmospheric conditions.

If the compressor is integrated into the same module, a single sound power measurement is made.

If the compressor is placed in another module, it is installed in the adjacent reverberation room with the water loop simulating the condenser crowns.

Both the sound power measurements of the evaporator and compressor are then made at the same time.


104

APPENDIX 6 - INTERNAL COMBUSTION ENGINE-DRIVEN HP TESTS

CONTENTS

1. Introduction......................................................................................................... 105

2. Brief description of an IC engine-driven HP ..................................................... 105

3. Definition of certified and evaluated parameters and quantities .................... 105

Effective electric power PE ................................................................................................ 105 Heating capacity Qh .......................................................................................................... 105 Effective heating capacity QEh .......................................................................................... 105 Heat recovery capacity PEhr (evaluated quantity) ............................................................... 107 Effective heat recovery capacity QEhr (evaluated quantity) ................................................. 107 Cooling capacity QF, effective cooling capacity QEF ........................................................... 108 Gas heat input in heating mode Qgmh ................................................................................ 108 Rated gas heat input in heating mode Qgnh ..................................................................... 108 Gas heat input and rated heat input in cooling mode......................................................... 109 Gas utilisation efficiency in heating mode GUEh ................................................................ 109 Gas utilisation efficiency in cooling mode .......................................................................... 109

4. TEST SET-UP ...................................................................................................... 109

Test set-up provisions ...................................................................................................... 109 Test appliance set-up and connection ............................................................................... 110

5. MEASUREMENT UNCERTAINTIES .................................................................... 110

6. Test procedure .................................................................................................... 111

General ............................................................................................................................ 111 All appliances ................................................................................................................... 111 Ductless appliances ......................................................................................................... 111 Appliances connected to the inside heat exchanger .......................................................... 111 Appliances connected to the outdoor heat exchanger ....................................................... 112 Heating capacity measurement for liquid/liquid and liquid/air appliances ........................... 112 Heating capacity measurement for air/air appliances using the enthalpy method and air//liquid appliances ......................................................................................................... 113 Heating capacity measurement for air/air appliances using the room calorimeter method.. 115 Measurement in cooling mode .......................................................................................... 116

7. Test results ......................................................................................................... 117

Annex A Calculation of corrections cindoor, coutdoor and chr ............................................... 121

Annex B Liquid circulation pump efficiency determination ............................................ 123

Annex C Heating capacity tests — Flow chart and examples of various test sequences125


105

1. INTRODUCTION

This document describes the test methods for gas IC engine-driven heat pumps.

2. BRIEF DESCRIPTION OF AN IC ENGINE-DRIVEN HP

Most IC engine-driven HPs comprise the same thermodynamic components as an electric HP. The only changes are:

• The compressor drive type. Indeed, IC engine-driven HPs drive the HP compressor by means of a gas-fired internal combustion engine.

• The optional insertion of a specific water/liquid coolant exchanger which may be incorporated into this type of appliance to "recycle" the cooling heat.

3. DEFINITION OF CERTIFIED AND EVALUATED PARAMETERS AND QUANTITIES

Effective electric power PE

The effective power input consists of the mean electric power absorbed by the appliance during the defined time interval. It consists of:

• the electric power absorbed during the operation of the IC engine-driven HP (including the electric power absorbed by defrosting) as well as the power absorbed by all the control and safety devices of the appliance;

• the share of power of the devices (e.g. fans, pumps) that transfer heat through the heat exchangers (indoor, outdoor, recovery).

Tables 1 to 3 show the calculation formulas for PE according to the type of appliance.

Heating capacity Qh

The heating capacity of air/air or (glycol) water/air heat pumps and the cooling capacity, if they are reversible, should be determined by means of room calorimeter measurements or by the air enthalpy method described in Annex A and in Annex B of the NF EN 14511-3 standard, respectively.

The heating capacity of air/(glycol) water, liquid/liquid heat pumps and the cooling capacity, if they are reversible, should be determined according to the direct method on the heat exchanger in contact with the heat transfer fluid (water or glycol water), by determining the volume flow rate of the heat transfer fluid, and the inlet and outlet temperatures, taking into account the specific heat and density of the heat transfer fluid.

The heating capacity should be determined using the following formula:

n

)x Δ Cpx ρx (q

Q

n

1j

j jjx j

h

=

= (1)

where j is the sampling number; n is the number of samples taken during the data acquisition period; Qh is the heating capacity, expressed in Watts; qj is the volume flow rate of the heat transfer fluid for the sampling in question, expressed in cubic metres per second;

j is the density of the heat transfer fluid at the measurement temperature for the sample in question, expressed in kilogrammes per cubic metre; cpj is the specific heat at constant pressure corresponding to the mean temperature of the heat transfer fluid for the sampling in question, expressed in Joules per kilogramme-Kelvin;

tj is the inlet-outlet temperature differential for the sampling in question, expressed in Kelvin.

Note 1: The water mass flow rate can be measured directly as a substitute for the term ( x q)

Note 2: The enthalpy differential can also be used as a substitute for the term (cp x t)

Effective heating capacity QEh

The effective heating capacity corresponds to the mean heating capacity reproduced in the indoor exchanger by the IC engine-driven HP during the defined time interval when this appliance is supplied with one of the reference gases (from the gas category covering the appliance) under reference conditions (dry gas, 15°C, 1013.25 mbar).

It consists of:

• the heating capacity Qh corrected for the effect of the test gas actually used;


106

• the share of power of the devices (e.g. fans, pumps) that transfer heat through the indoor heat exchanger.

Tables 1 to 3 show the calculation formulas for QEh and PE according to the type of appliance.

Appliance

type

Electrical

component for

outdoor exchanger

fluid circulation

Electrical component for

indoor exchanger fluid

circulation

Effective heating capacity

QEh

Effective electric power

PE

Ductless

air/liquid

The fan is integrated

into the appliance

The pump is integrated

into the appliance indoorhEh cQQ −= indoorE cPP −=

The pump is not integrated

into the appliance indoorhEh cQQ +=

indoorE cPP +=

The fan is

integrated into

the appliance


into the appliance


into the appliance indoorhEh cQQ −= outdoorindoorE ccPP −−=


into the appliance indoorhEh cQQ += outdoorindoorE ccPP −+=

The fan is not

integrated in the

appliance


into the appliance indoorhEh cQQ −= outdoorindoorE ccPP +−=


into the appliance indoorhEh cQQ += outdoorindoorE ccPP ++=

Table 1 – QEh and PE calculation for Air/liquid appliances

Appliance

type

Electrical

component for

outdoor exchanger

fluid circulation



circulation


QEh


PE

Ductless air /

Ductless air


into the appliance

The fan is integrated into

the appliance hHgazEh QP*CQ ==

PPE =

Ductless air /

Ducted air


into the appliance


the appliance indoorhEh cQQ −= indoorE cPP −=

The fan is not integrated in

the appliance indoorhEh cQQ += indoorE cPP +=

Ducted air /

Ducted air


into the appliance The fan is integrated into

the appliance

hEh QQ = outdoorE cPP −=

The fan is not

integrated in the

appliance hEh QQ =

outdoorE cPP +=

Ducted

air/Ducted air


into the appliance


the appliance indoorhEh cQQ += outdoorindoorE ccPP −−=


the appliance indoorhEh cQQ −= outdoorindoorE ccPP −+=

The fan is not

integrated in the

appliance


the appliance indoorhEh cQQ += outdoorindoorE ccPP +−=


the appliance indoorhEh cQQ −= outdoorindoorE ccPP ++=

Table 2 - QEH and PE calculation for Air/Air appliances


107

Appliance

type

Electrical

component for

outdoor exchanger

fluid circulation



circulation


QEh


PE

Liquid/Liquid

The pump is

integrated into the

appliance


into the appliance indoorhEh cQQ −= outdoorindoorE ccPP −−=

The pump is not

integrated into the

appliance indoorhEh cQQ +=

outdoorindoorE ccPP −+=

The pump is not

integrated into the

appliance


into the appliance indoorhEh cQQ −= outdoorindoorE ccPP +−=

The pump is not

integrated into the

appliance indoorhEh cQQ +=

outdoorindoorE ccPP ++=

Table 3 - QEh and PE calculation for Liquid/Liquid appliances

Heat recovery capacity PEhr (evaluated quantity)

The heat recovery capacity, in both heating and cooling mode should be determined according to the direct method on the heat exchanger in contact with the heat transfer fluid (water or glycol water), by determining the volume flow rate of the heat transfer fluid, and the inlet and outlet temperatures, taking into account the specific heat and density of the heat transfer fluid.

The heating capacity should be determined using the following formula:

n

)x Δ Cpx ρx (q

Q

n

1j

j j j j

hr

=

= (2)

where

j is the sampling number; n is the number of samples taken during the data acquisition period; Qhr is the heat recovery capacity, expressed in Watts; qj is the volume flow rate of the heat transfer fluid for the sampling in question, expressed in cubic metres per second;

j is the density of the heat transfer fluid at the measurement temperature for the sample in question, expressed in kilogrammes per cubic metre; cpj is the specific heat at constant pressure corresponding to the mean temperature of the heat transfer fluid for the sampling in question, expressed in Joules per kilogramme-Kelvin;

tj is the inlet-outlet temperature differential for the sampling in question, expressed in Kelvin.

Note 1: The water mass flow rate can be measured directly as a substitute for the term (j x qj).

Note 2: The enthalpy differential can also be used as a substitute for the term (cpj x tj).

Effective heat recovery capacity QEhr (evaluated quantity)

The effective heat recovery capacity QEhr corresponds to the mean heat recovery capacity reproduced in the recovery exchanger by the appliance during the defined time interval when the appliance is supplied with one of the reference gases (from the gas category covering the appliance) under reference conditions (dry gas, 15°C, 1013.25 mbar).

It consists of:

• the heat recovery capacity PEhr corrected for the effect of the test gas actually used;

• the share of power of the pump providing circulation of the heat transfer fluid in the heat recovery circuit.

Table 4 shows the calculation formulas for QEhr according to the type of appliance.

Appliance

type

Electrical component for recovery exchanger heat transfer fluid

circulation

Effective heat recovery capacity QEhr

All appliance

types

The recovery circuit pump is integrated into the appliance hrhrEhr cQQ −=

The recovery circuit pump is not integrated into the appliance hrhrEhr cQQ +=

Table 4 – QEhr calculation


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Cooling capacity QF, effective cooling capacity QEF

The procedure for calculating the effective heating and heating capacities should be applied respectively for calculating the cooling capacities and effective cooling capacities of reversible HPs when operating in cooling mode.

Gas heat input in heating mode Qgmh

The gas heat input under the test conditions should be determined using one of the following formulas:

n

)Hx (Mh

278Q

j

n

1j

iM(T) j

gmh

=

= (3)

or

n

)Hx (Vh

278Q

j

n

1j

iV(T) j

gmh

=

= (4)

where:

j is the sample number; n is the number of samples during the data acquisition period; Qgmh is the heat input measured in heating mode, in Watts; HiM(T)j is the net calorific value by mass of the test gas for the sample in question, in Megajoules per kilogramme; Mhj is the gas mass flow rate in heating mode for the sample in question, in kilogrammes per hour; HiV(T)j is the net calorific value by volume of the test gas for the sample in question, in Megajoules per cubic metre (dry gas, expressed at 15°C, 1013.25 mbar); Vhj is the volume flow rate of the dry gas with reference to 1013.25 mbar and 15°C in heating mode for the sample in question, in cubic metres per hour, determined using the following formula:

gj

wjjajmjj

t15,273

15,288

25,1013

pppVVh

+

−+=

(5)

where: Vmj is the gas volume flow measured in heating mode for the sample in question, in cubic metres per hour; paj is the atmospheric pressure for the sample in question, in millibar; pj is the gas feed pressure at the meter for the sample in question, in millibar; pwj in the partial water vapour pressure in the gas for the sample in question, in millibar; tgj is the temperature of the gas at the meter for the sample in question, in degrees Celsius.

Note 1: It is important to note that the gas pressure on the flow meter may be different from the gas feed pressure of the appliance under test.

Rated gas heat input in heating mode Qgnh

Rated gas heat input should be determined using one of the following formulas:

iM

j

n

1j

0

gnh H x n

hM

278Q

=

= (6)

or

iV

j

n

1j

0

gnh H x n

hV

278Q

=

= (7)

Qgnh is the rated heat input in heating mode, in Watts; M0hj is the mass flow rate of the reference gas under the reference conditions (dry gas, 15°C, 1,013.25 mbar) in heating mode, in Megajoules per kilogramme, determined using the following formula;

d

dr

15,288

tg15,273

PP

P25,1013MhhM

j

jaj

jjj0

+

+

+=

(8)


109

where

Mhj is the gas mass flow rate in heating mode for the sample in question, in kilogrammes per hour;

paj is the atmospheric pressure for the sample in question, in millibar;

pj is the gas feed pressure at the meter for the sample in question, in millibar;

pwj in the partial water vapour pressure in the gas for the sample in question, in millibar;

tgj is the temperature of the gas at the meter for the sample in question, in degrees Celsius.

dr is the density of the reference gas with respect to dry air;

d is the density of the dry gas used with respect to dry air;

HiM is the net calorific value by mass of the reference gas under reference conditions (dry gas, 15°C, 1013.25 mbar);

V0hj is the volume flow rate of the reference gas under the reference conditions (dry gas, 15°C, 1,013.25 mbar) determined using the following formula;

dr

d

tg15,273

15,288

25,1013

PP

25,1013

P25,1013VhhV

i

jajjjj0

+

+

+=

(9) Hiv is the net calorific value by volume of the reference gas under reference conditions (dry gas, 15°C, 1,013.25 mbar);

Gas heat input and rated heat input in cooling mode

The procedure for calculating the gas heat input and rated heat input in heating mode should be applied respectively for calculating the gas heat input and rated heat input of reversible HPs when operating in cooling mode.

This parameter is referred to as Qgnc

Gas utilisation efficiency in heating mode GUEh

The gas utilisation efficiency, for HP tests in heating mode, is determined using the following equation:

gmh

Ehh

Q

QGUE =

(10)

where:

GUEh is the gas utilisation efficiency;

QEh is the effective heating capacity, in Watts; Qgmh is the gas heat input, measured in Watts.

Gas utilisation efficiency in cooling mode

The procedure for calculating the gas utilisation efficiency in heating mode should be applied for calculating the gas utilisation efficiency of reversible HPs when operating in cooling mode. This parameter is referred to as GUEc with the following equation:

gmc

Ecc

Q

QGUE =

(11)

where:

GUEc is the gas utilisation efficiency in cooling mode;

QEc is the effective cooling capacity, in Watts; Qgmc is the gas heat input measured, in Watts.

4. TEST SET-UP

Test set-up provisions

4.1.1. General requirements

The test set-up should be designed to comply with all set-point value setting requirements, stability criteria and measurement uncertainties in accordance with this procedure.


110

4.1.2. Feed gas requirements

The tests should be conducted with one of the suitable reference gases for the category covering the appliance (see the NF EN 437 standard), under the rated pressure specified in the NF EN 437 standard.

Before testing, the heat input of the burner(s) is set, if required, to be equal to the rated heat input ± 5%.

This rated heat input is set when the appliance is operating under the rated conditions according to the standard.

4.1.3. Test chamber requirements at air end

The dimensions of the test chamber should be selected to avoid any obstacles to air circulation at the air inlet and outlet openings of the test appliance. The air flow rate in the chamber should not give rise to short-circuiting between the two openings; as a result, the air velocity in the chamber at these two openings should not exceed 1.5 m/s when the test appliance is not operating. Moreover, the air velocity in the chamber should not exceed the mean velocity at the appliance inlet. Unless specified otherwise by the manufacturer, the air inlet and outlet openings should be situated at least 1 m from the walls of the test chamber.

Any direct radiation of heat from the test chamber heating equipment to the appliance or to the temperature measurement points should be prevented.

4.1.4. Ducted appliances

The ducted appliance set-up should be sufficiently air-tight to prevent the measurement results from being influenced significantly by air exchange with the environment.

4.1.5. Appliances with integrated pumps

For appliances with adjustable and incorporated water or glycol water pumps, the external static pressure should be set at the same time as the temperature differential, according to the protocol specified below.

Test appliance set-up and connection

4.1.6. General

The test appliance should be set up and connected for the test as recommended by the manufacturer in the installation and operating manual. Accessories supplied as an option (e.g. supplementary electric heater) are not included in the test.

4.1.7. Set-up of appliances with separate components

In the case of appliances with separate components, the following set-up conditions should be observed for the tests:

a) the refrigeration connections should be fitted in accordance with manufacturer instructions with a minimum length of 5 m and a maximum length of 7.5 m if test set-up restrictions do not allow a length of 5 m;

b) the connections should be fitted such that the difference in elevation does not exceed 2.5 m;

c) the refrigeration connections should be thermally insulated in accordance with manufacturer instructions;

d) unless restricted for design reasons, at least half of the refrigeration connections should be exposed to outdoor conditions, with the remainder exposed to indoor conditions.

4.1.8. Measurements

The temperature and pressure measurement points should be distributed so as to obtain significant mean values.

Free air inlet temperature measurements require the following:

• - at least one sensor per square metre with at least four measurement points, restricting the number of sensors distributed evenly on the air surface to 20;

• - or the use of a sampling device. It should be supplemented with four sensors to check uniformity if the surface area is greater than 1 m2.

The air temperature sensors should be positioned at a maximum distance of 0.25 m from the free air surface (e.g. 25 cm from the outside exchanger in the case of a ductless Air/liquid HP).

Note 1: It should be noted that, for appliances using a liquid as the inside heat transfer fluid, a temperature measurement should be made at the water meter.

5. MEASUREMENT UNCERTAINTIES

The measurement uncertainties should not exceed the values specified in Table 5.


111

The heating capacity measured at the liquid end should be determined with a maximum uncertainty equivalent to

the maximum between 5 % and (20.5*T-0.89), regardless of the individual measurement uncertainties, including fluid property uncertainties.

The heating capacity in stabilised mode determined using the calorimetric method should be determined with a maximum uncertainty of 5%, regardless of the individual measurement uncertainties, including fluid property uncertainties.

The gas heat input should be determined with a maximum uncertainty of 2%, regardless of the individual measurement uncertainties, including fluid property uncertainties.

In the case of transient mode tests (appliance on/off cycle, defrosting cycles, etc.), no maximum measurement uncertainty is required for the heating capacity determined, the power input and the gas heat input. However, the various instruments suitable for determining these parameters should observe the measurement uncertainties defined in Table 5 when used for stabilised mode tests.

Quantity measured Unit Measurement uncertainty

Liquid (water or glycol water) - inlet/outlet temperature - temperature differential - flow rate (volume or mass) - static pressure differential

ºC K

m3/s or kg/s Pa

± 0.15 K ± 0.21 K

± 1 % 5 %

Air - dry bulb temperature - wet bulb temperature - flow rate (volume) - static pressure differential

ºC ºC

m3/s Pa

± 0.2 K ± 0.4 K ± 5 %

± 5 Pa (p 100 Pa) or 5% (p >100 Pa)

Concentration - heat transfer fluid

%

± 2 %

Heat input - atmospheric pressure - gas pressure - gas flow rate - gas temperature - calorific value

mbar mbar

m3/h or kg/h °C

MJ/m3

± 5 mbar

± 2% full scale without exceeding 0.5 mbar ± 1 %

± 0.5 K ± 1 %

Electrical quantities - electric power - voltage

W V

± 1 %

± 0.5 %

Time s ± 0.2 s to 1 hr

± 0.1% after 1 hr

Table 5 – Measurement uncertainties on specified values

6. TEST PROCEDURE

General

For measurements made in heating mode, set to the highest set-point temperature on the appliance/test device.

For open compressor appliances, the motor should be provided or specified by the manufacturer. The compressor should operate at the running speed specified by the manufacturer.

For all components controlled by means of an inverter type control system (e.g. fan), if the manufacturer gives instructions for setting the frequency for each performance condition, the setting(s) should be applied.

All appliances

The test conditions are given in the rules for the NF mark.

If a heat transfer fluid other than water is used, the specific heat and density of the heat transfer fluid should be determined and included in the evaluation.

Ductless appliances

For ductless appliances, adjustments such as the shutters and fan speed should be set to obtain the maximum flow rate.

Appliances connected to the inside heat exchanger

The volume flow rate and the pressure differential should be determined with reference to normal air (20°C, 101.325 kPa having a density of 1.204 kg/m³) with a dry heat exchanger.


112

If the air flow rate is given by the manufacturer without atmospheric pressure or temperature and humidity conditions, it should be considered as that given for normal air conditions.

The air flow rate evaluated by the manufacturer should be converted to normal air conditions. The air flow rate setting should be performed with only the fan in operation.

The air flow rate given by the manufacturer, at the ventilation speed provided, should be set to the resulting external static pressure (ESP) measured.

If the ESP is less than the minimum value given in Table 6, the air flow rate is reduced to this minimum value.

If the ESP is greater than double the minimum value given in Table 6, the air flow rate is increased to double this minimum value.

If the ESP is greater than the minimum value given in Table 6 but not greater than double the minimum value, the ESP is retained.

The apparatus used to set the ESP should be kept in the same position during all the tests.

Rated capacities

kW

Minimum external static pressure a b

Pa

0 Q 8 25

8 Q 12 37

12 Q 20 50

20 Q 30 62

30 Q 45 75

45 Q 82 100

82 Q 117 125

117 Q 147 150

Q 147 175

a For appliances tested with no air filter, the minimum external static pressure should be increased by 10 Pa.

b If the manufacturer's set-up instructions specify that the maximum permissible discharge duct length is less than 1 m, the appliance can be

considered to have a free discharge and tested as for a ductless indoor appliance with an ESP of 0Pa.

Table 6 - Pressure requirements for air conditioners and comfort heat pumps

Note: It should be noted that an air conditioner (or heat pump) is an appliance designed to meet the comfort requirements of the occupants of an air-conditioned (or heated) room.

Appliances connected to the outdoor heat exchanger

The volume flow rate and the pressure differential should be determined with reference to normal air (20°C, 101.325 kPa having a density of 1.204 kg/m³) with a dry heat exchanger.

If the air flow rate is given by the manufacturer without atmospheric pressure or temperature and humidity conditions, it should be considered as that given for normal air conditions.

The air flow rate evaluated by the manufacturer should be converted to normal air conditions. The air flow rate setting should be performed with only the fan in operation.

The air flow rate given by the manufacturer at the ventilation speed provided should be set to the resulting external static pressure (ESP) measured.

If the ESP is less than 30 Pa, the air flow rate is reduced to this minimum value.

The apparatus used to set the ESP should be kept in the same position during all the tests.

If the manufacturer's set-up instructions specify that the maximum permissible discharge duct length is less than 1 m, the appliance can be considered to have a free discharge and tested as for a ductless outdoor appliance with an ESP of 0 Pa.

Heating capacity measurement for liquid/liquid and liquid/air appliances

6.1.1. Stabilised mode conditions and setting

The mode is deemed to be stabilised and maintained when all the quantities measured remain constant without having to modify the set-point values for at least 1 hour, in line with the tolerances specified in Table 7. Periodical fluctuations of the quantities measured caused by the use of regulation and control equipment are allowed, provided that the mean or individual value of these fluctuations, according to the circumstances, does not exceed the permissible deviations given in Table 7.


113

Quantity measured Permissible deviations on arithmetic mean value with respect to set-point values

Admissible deviations on the individual values from the set-

point value

Liquid

inlet temperature

outlet temperature

mean temperature

volume flow rate

static pressure differential

0.2 K

0.3 K

0.2 K

2 % --

0.5 K

0.6 K

0.5 K

5 %

10 %

Air

inlet temperature (dry/wet bulb)

volume flow rate

static pressure differential

0.3 K

5 % -

1 K

10 %

10 %

Voltage ± 4 % ± 4 %

Table 7 – Permissible deviations

Depending on the test conditions specified in the standard, there are two possible test condition settings:

Scenario no. 1: Manufacturer water flow rate setting and mean water temperature setting: The test laboratory sets the water flow rate to the manufacturer's rated flow rate value. The water inlet temperature is then adjusted to obtain the required mean temperature.

Scenario no. 2: Water inlet and outlet temperature setting: The test laboratory sets the water inlet temperature to the value specified in the standard. The water flow rate is then adjusted to obtain the water outlet temperature defined in the standard.

For glycol water tests, the tests should be conducted with 30% MPG (MonoPropylene Glycol).

6.1.2. Heating capacity, cooling capacity, recovery capacity, gas heat input and power input measurement

To measure the capacity and gas heat input values, all the significant data should be recorded continuously. For recorders running in cyclic mode, the sequence should be set to conduct a full recording at least every 30 s.

The capacity and gas heat input values should be measured under stabilised mode conditions. The data acquisition period is 40 min.

All the measurements should be made with the same sampling frequency, over the same data acquisition period.

6.1.3. GUE calculation

The data acquisition period is divided into four 10-min periods. One GUE value is calculated for each period. The fluctuations of the four GUE values should not exceed a 1.5% standard deviation and these individual variations should not exceed 3%.

Heating capacity measurement for air/air appliances using the enthalpy method and air//liquid appliances

6.1.4. General

The test procedure includes three periods: a heating-up period, a stabilisation period and a data acquisition period. The data acquisition time varies depending on whether the heat pump is running in stabilised or transient mode.

Annex C provides a flow chart of the procedure and a graphic representation of most of the various possible test sequences for conducting a heating capacity test.

6.1.5. Heating-up time

The test room heating-up apparatus and the heat pump under test should run until the test tolerances specified in Table 7 are maintained for at least 10 min.

A heating-up period may end with a defrosting cycle. If a heating-up period ends with a defrosting cycle, the heat pump should run in heating mode for at least 10 min after the end of defrosting before starting the stabilisation period.

6.1.6. Stabilisation period

The stabilisation period immediately follows the heating-up period or the defrosting cycle and the 10 min recovery period after the heating-up period.

A full stabilisation period lasts for one hour.


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Other than in the case of the specifications in 6.1.10, the heat pump should operate in accordance with the test tolerances specified in Table 7.

6.1.7. Data acquisition period

The data acquisition period immediately follows the stabilisation period.

Data should be recorded at regular intervals of 30 s or less, except during the defrosting cycles as specified below.

During defrosting cycles, and for the 10 min following defrosting, some data used to evaluate the capacity and gas heat input values of the heat pump should be recorded more frequently, at intervals equal to 10 s or less. If the indoor air enthalpy method is used, these data to be recorded more frequently include the inside dry bulb temperature variation.

For heat pumps that automatically shut down the indoor fan during defrosting, a zero value should be assigned to the heating capacity portion measured during the defrosting phases and/or the dry bulb temperature variation indoors when the indoor fan is shut down, if the indoor air enthalpy method is used. If the calorimetric method is used, integration of the capacity should be continued when the indoor fan is shut down.

The difference between the heat transfer fluid temperatures at the indoor heat exchanger inlet and outlet should be

measured. For each 5-min interval during the data acquisition period, a mean temperature differential, Ti (),

should be calculated. The mean temperature differential for the first 5 minutes of the data acquisition period, Ti

( = 0), should be recorded to enable the following percent variation calculation:

( ) ( )( )

=

−==

0T

T0TT%

i

ii

(12)

6.1.8. Test procedure: if the heating-up period ends with a defrosting cycle

If the quantity %T exceeds 2.5% in the first 70 minutes of the data acquisition period, the heating capacity test should be considered as a transient mode test (see 6.1.10). If the heat pump starts a defrosting cycle during the stabilisation period or during the first 70 minutes of the data acquisition period, the heating capacity test should be considered as a transient mode test.

If the above conditions are not met and the test tolerances specified in Table 7 are complied with both during the stabilisation period and the first 70 minutes of the data acquisition period, the heating capacity test should be considered as a stabilised mode test. Stabilised mode tests should end after 70 min of data acquisition.

6.1.9. Test procedure: if the heating-up period does not end with a defrosting cycle

6.7.6.1 If the heat pump starts a defrosting cycle during the stabilisation period or during the first 70 minutes of the data acquisition period, the heating capacity test should be restarted in accordance with 6.7.6.3.

6.7.6.2 If the quantity %T exceeds 2.5% at any time during the first 70 minutes of the data acquisition period, the heating capacity test procedure should be restarted in accordance with 6.7.6.3. A defrosting cycle should be carried out before restarting the test. This defrosting cycle may be started manually or delayed until the heat pump starts automatic defrosting.

6.7.6.3 If 6.7.6.1 or 6.7.6.2 applies, the restart should take place 10 min after the end of the defrosting cycle with a further stabilisation period of one hour. This second attempt should comply with the requirements in 6.1.6 and 6.1.7and the test procedure in 0.

6.7.6.4 If the conditions specified in 6.7.6.1 or 6.7.6.2 are not met and the test tolerances specified in Table 7 are complied with both during the stabilisation period and the first 70 minutes of the data acquisition period, the heating capacity test should be considered as a stabilised mode test. Stabilised mode tests should end after 70 min of data acquisition.

6.1.10. Transient mode test procedure

If a heating capacity test is considered to be a transient mode test in accordance with 0, the following modifications should be made.

Quantities

Arithmetic mean variations of values with respect to specified

test conditions

Variations in the individual values from the set-point value

Interval H a Interval D b Interval H a Interval D b


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Inside air inlet temperature; - dry bulb - wet bulb

± 0.6 K

-

± 1.5 K

-

± 1.0 K

-

± 5.0 K

-

Outside air inlet temperature; - dry bulbc - wet bulb

± 0.6 K ± 0.3 K

± 1.5 K ± 1.0 K

± 1.0 K ± 0.6 K

± 5.0 K

-

Water inlet temperature ± 0.2 K - ± 0.5 K e

Water outlet temperature ± 0.5 K - ± 1.0 K d

Mean water temperature ± 0.5 K - -

Water flow rate ± 2 % / 5 % /

Electricity - Voltage

± 4 % ± 4 %

a Applicable when the heat pump is in heating mode, except for the first 10 minutes after the end of a defrosting cycle b Applicable during a defrosting cycle and for the first 10 minutes after the end of a defrosting cycle when the heat pump is running in heating mode c For appliances with outdoor heat exchange surface areas greater than 5m², the deviation on the air inlet dry bulb temperature is multiplied by two. d The variation should not exceed +2.0K e The variation should not exceed -5.0K

Table 8 – Permitted variations in heating capacity tests when the transient mode test procedure is used

To obtain a valid heating capacity test in transient mode, the test tolerances specified in Table 8 should be obtained both during the stabilisation period and during the data acquisition period. As specified in Table 8, the test tolerances are specified for two subintervals. The interval H consists of the data compiled during each heating phase, except for the first 10 minutes following the end of defrosting. The interval D consists of the data compiled during each defrosting cycle and during the first 10 minutes of the next heating phase.

The test tolerance parameters in Table 8 should be determined throughout the stabilisation and data acquisition periods. All the data compiled during each interval, H or D, should be used to evaluate compliance with the test tolerances in Table 8. The data from two or more H intervals or two or more D intervals should not be combined and subsequently used to evaluate compliance with Table 8. Compliance is based on the evaluation of the data from each individual interval.

The data acquisition period should be extended until 3 hours have elapsed or until the heat pump has completed three full cycles during this period, whichever comes first. If the heat pump is in the process of conducting a defrosting cycle at the end of the 3 hours, the data acquisition period ends at the end of the defrosting cycle. A full cycle consists of a heating period and a defrosting period; from the end of one defrosting to the end of defrosting.

6.1.11. GUE calculation

The GUE is calculated for the same data acquisition period as the heating and recovery capacities and the power inputs, as defined in 6.1.7.

Heating capacity measurement for air/air appliances using the room calorimeter method

6.1.12. General

The test procedure includes two periods: a heating-up period and a data acquisition period. The data acquisition time varies depending on whether the heat pump is running in stabilised or transient mode.

6.1.13. Stabilisation period

The test room heating-up apparatus and the heat pump under test should run until the test tolerances specified in Table 7 are maintained for at least 1 hour, unless defrosting takes place during this period, the tolerances specified in Table 8 apply.

If defrosting takes place during the stabilisation period, the test procedure described in 6.1.16 applies.

6.1.14. Data acquisition period

Data should be recorded at regular intervals of 30 s or less, except during the defrosting cycles as specified below.

The measurement period should not be less than 70 min.

The difference between the heat transfer fluid temperatures at the indoor heat exchanger inlet and outlet should be

measured. For each 5-minute interval during the data acquisition period, a mean temperature differential, Ti (τ),

should be calculated. The mean temperature differential for the first 5 minutes of the data acquisition period, Ti

( = 0), should be recorded to enable the following percent variation calculation:


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( ) ( )( )

1000

0%

i

ii

=

−==

T

TTT

(13)

6.1.15. General test procedure:

If defrosting takes place before the data acquisition period starts, or if the quantity %ΔT exceeds 2.5% during the data acquisition period, the heating capacity test should be considered as a transient mode test (see 6.1.16). Furthermore, if the heat pump starts a defrosting cycle during the stabilisation period or during the data acquisition period, the heating capacity test should be considered as a transient mode test.

If the above conditions are not met and the test tolerances specified in Table 7 are complied with both during the stabilisation period and the data acquisition period, the heating capacity test should be considered as a stabilised mode test. Stabilised mode tests should end after a data acquisition period of at least 70 min.

6.1.16. Transient mode test procedure

If a heating capacity test is considered to be a transient mode test in accordance with 6.1.15, the following modifications should be made.

To obtain a valid heating capacity test in transient mode, the test tolerances specified in Table 8 should be obtained both during the stabilisation period and during the data acquisition period. As specified in Table 8, the test tolerances are specified for two subintervals. The interval H consists of the data compiled during each heating phase, except for the first 10 minutes following the end of defrosting. The interval D consists of the data compiled during each defrosting cycle and during the first 10 minutes of the next heating phase.

All the data compiled during each interval, H or D, should be used to evaluate compliance with Table 8. The data from two or more H intervals or two or more D intervals should not be combined and subsequently used to evaluate compliance with Table 8. Compliance is based on the evaluation of the data from each individual interval.

The data acquisition period should be extended until 3 hours have elapsed or a full number of cycles have been completed, unless the mean time interval for a full cycle is greater than 2 hours, in which case the data acquisition period should only consist of one full cycle or 4 hours, whichever comes first. A full cycle consists of a heating period and a defrosting period, from the end of one defrosting to the end of defrosting. With this procedure, the maximum data acquisition time is 4 hours.

During defrosting cycles, and for the 10 min following defrosting, some data used to evaluate the capacity and heat input values of the heat pump should be recorded more frequently, at intervals equal to 10 s or less. If the room calorimeter method is used, the data to be recorded more frequently include all the measurements required to determine the inside capacity.

For heat pumps that automatically shut down the indoor fan during a defrosting cycle, capacity integration should be continued when the indoor fan is shut down.

Measurement in cooling mode

Regardless of the type of appliances tested, the following procedure should be applied for tests in cooling mode.

6.1.17. Stabilised mode conditions and setting

The mode is deemed to be stabilised and maintained when all the quantities measured remain constant without having to modify the set-point values for at least 1 hour, in line with the tolerances specified in Table 7. Periodical fluctuations of the quantities measured caused by the use of regulation and control equipment are allowed, provided that the mean or individual value of these fluctuations, according to the circumstances, does not exceed the permissible deviations given in Table 7.

Depending on the test conditions specified in the standard, there are two possible test condition settings:

Scenario no. 1: Manufacturer water flow rate setting and mean water temperature setting: The test laboratory sets the water flow rate to the manufacturer's rated flow rate value. The water inlet temperature is then adjusted to obtain the required mean temperature.

Scenario no. 2: Water inlet and outlet temperature setting: The test laboratory sets the water inlet temperature to the value specified in the standard. The water flow rate is then adjusted to obtain the water outlet temperature defined in the standard.

For glycol water tests, the tests should be conducted with 30% MPG (MonoPropylene Glycol).

6.1.18. Cooling capacity, gas heat input and power input measurement in cooling mode

To measure the capacity and gas heat input values, all the significant data should be recorded continuously. For recorders running in cyclic mode, the sequence should be set to conduct a full recording at least every 30 s.

The capacity and gas heat input values should be measured under stabilised mode conditions. The data acquisition period is 40 min.


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All the measurements should be made with the same sampling frequency, over the same data acquisition period.

6.1.19. GUE calculation in cooling mode

The data acquisition period is divided into four 10-min periods. One GUE value is calculated for each period. The fluctuations of the four GUE values should not exceed a 1.5% standard deviation and these individual variations should not exceed 3%.

7. TEST RESULTS

Data to be recordedThe data to be recorded for the performance tests is specified in Tables 9 to 12. The tables identify the general information required, without limiting the data to be obtained.

These data should be the mean values measured for the data acquisition period, except for the time measurement.

Result quantities measured Unit

Ambient conditions

- air dry bulb temperature

- atmospheric pressure

°C

mbar

Gas-related quantities

- gas flow rate

- gas pressure (absolute or relative)

- gas temperature

- gas net calorific value

- gas density

or

Wobbe index

m3/h or kg/h

mbar

°C

MJ/m3 or MJ/kg

kg/m3 or kg.m3/kg.m3

MJ/m3 or MJ/kg

Electrical quantities

- voltage

- total current

- total electric power, PT

- effective electric power, PE

V

A

W

W

Thermodynamic quantities


Air

- inlet dry bulb temperature

- inlet wet bulb temperature

For connected appliances

- outlet dry bulb temperature

- outlet wet bulb temperature

- external/internal static pressure differential

- volume flow rate

- condensate flow rate

Water or glycol water

- inlet temperature

- outlet temperature

- volume flow rate

- circulation pump speed setting, if applicable

- pressure differential

°C

°C

°C

°C

Pa

m3/s

kg/s

°C

°C

m3/s or kg/s

kPa

Table 9 – Data to be recorded for tests using the enthalpy method (1/2)


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Result quantities measured Unit


Air

- inlet dry bulb temperature

- inlet wet bulb temperature


- outlet dry bulb temperature

- outlet wet bulb temperature

- external/internal static pressure differential

- volume flow rate

- condensate flow rate


- inlet temperature


- volume flow rate or mass flow rate



°C

°C

°C

°C

Pa

m3/s

kg/s

°C

°C

m3/s or kg/s

kPa

Heat recovery exchanger

- inlet temperature


- volume flow rate



°C

°C

m3/s or kg/s

kPa

Heat transfer fluid (other than water)

- concentration (volume)

- density

- specific heat

%

kg/m3

J/kg.K

Defrosting

- defrosting period

- operating cycle with defrosting

s

s

Data acquisition period s

Capacities

- heating capacity (PH)

- effective heating capacity (QEh)

- cooling capacity (PF)

- effective heating capacity (QEh)

- heat recovery capacity (PEHR)

- effective heat recovery capacity (QEHR)

W

W

W

W

W

W

Coefficients

- GUEh

- GUEF

- SHRa

W/W

W/W

W/W

a For air/air appliances only

Table 10 – Data to be recorded for tests using the enthalpy method (2/2)


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Result quantity measured Unit

Ambient conditions

atmospheric pressure kPa

Electrical quantities

voltage V

total current A

total power input, PT W

effective power input, PE W

Thermodynamic quantities


Air

inlet dry bulb temperature C

inlet wet bulb temperature C


outlet dry bulb temperature °C

outlet wet bulb temperature °C

external/internal static pressure differential Pa

volume flow rate, q m3/s

condensate flow rate kg/s


inlet temperature C

outlet temperature C

volume flow rate m3/s

circulation pump speed setting, if applicable -

pressure differential kPa


Air

inlet dry bulb temperature C



external/internal static pressure differential Pa



inlet temperature C

outlet temperature C




Table 11 – Data to be recorded for tests using the calorimetric method (1/3)



outlet dry bulb temperature C

outlet wet bulb temperature C external/internal static pressure differential Pa volume flow rate, q m3/s


inlet temperature C

outlet temperature C volume flow rate m3/s



Heat recovery exchanger inlet temperature °C outlet temperature °C

volume flow rate m3/s pressure differential kPa

Heat transfer fluid (other than water)

concentration (volume) % density kg/m3 specific heat J/kg.K

Liquid refrigerant a

discharge pressure bar abs. saturated vapour temperature / bubble point °C liquid temperature °C

Compressor component(s) open compressor running speed min-1 engine power (for open compressors only) W

component frequency in case of Inverter control Hz



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Result quantity measured Unit

ambient temperature around room calorimeter C

Room calorimeter power supplied to room calorimeter W power extracted from room calorimeter W

ambient temperature around room calorimeter °C humidifier incoming water temperature °C condensate temperature °C

Defrosting defrosting period s

operating cycle with defrosting min

Capacities - heating capacity (PH)

- total cooling capacity (PC) - latent cooling capacity (PL) - sensitive cooling capacity (PS)

W

W W W

Coefficients - COP - EER

- SHRa

W/W W/W

W/W a For air/air appliances only


Note: The gas-related quantity measurements (see Table 9) should also be recorded for tests based on the calorimetric method (therefore, in addition to those in Table 11 to Table 13.


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Annex A Calculation of corrections cindoor, coutdoor and chr

A.1 – Calculation of correction cindoor

• For appliances using air as the inside heat transfer fluid:

If the fan is built into the appliance:

−=

)ESPp(qc mine

indoor

(A.1) else

+=

)ESPpi(qc min

indoor

(A.2)

where

is 0.3 by convention;

(pe−ESPmin) is the available external static pressure differential measured on the appliance terminals - the minimum external static pressure as defined in Table 6, expressed in Pascal;

(pi+ESPmin) is the available external static pressure differential measured on the appliance's terminals + the minimum external static pressure as defined in Table 6, expressed in Pascal;

q is the rated indoor air flow rate, expressed in cubic metres per second.

• For appliances using a liquid as the inside heat transfer fluid

If the circulation pump is built into the appliance:

= e

indoor

pqc

(A.3) else

=

piqc indoor

(A.4)

where

is determined using the method in Appendix B;

pe is the available external static pressure differential measured, expressed in Pascal;

pi is the internal static pressure differential measured, expressed in Pascal; q is the rated water flow rate, expressed in cubic metres per second.

A.2 – Calculation of correction coutdoor

• For appliances using air as the outside heat transfer fluid

If the fan is built into the appliance:

−=

)ESPp(qc mine

outdoor

(A.1) else

+=

)ESPpi(qc min

outdoor

(A.2)

where

is 0.3 by convention;

(pe-ESPmin) is the available external static pressure differential measured on the appliance's terminals - the minimum external static pressure as defined in Table 6, expressed in Pascal;

(pi-ESPmin) is the available external static pressure differential measured on the appliance's terminals + the minimum external static pressure as defined in Table 6, expressed in Pascal;

q is the rated indoor air flow rate, expressed in cubic metres per second.


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• For appliances using a liquid as the outside heat transfer fluid

If the circulation pump is built into the appliance:

= e

outdoor

pqc

(A.7) else

=

piqc outdoor

(A.8)

where




A.3 – Calculation of correction chr

Heat recovery is only carried out on a liquid circuit. If the circulation pump is built into the appliance:

= e

hr

pqc

(A.9) else

−=

)pi(qchr

(A.10)

where





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Annex B Liquid circulation pump efficiency determination

B.1 General

The circulation pump efficiency calculation method, regardless of whether the pump is built into the appliance, is based on the relationship between the efficiency of the pump and its hydraulic power.

B.2 Liquid circulation pump hydraulic power

The circulation pump is built into the appliance

If the circulation pump is built into the appliance, the hydraulic power of the pump is defined as follows:

pe*qPhydrau = (B.1)

where:

Phydrau is the hydraulic power of the pump, in Watts; Q is the water volume flow rate, in m³/s; Δpe is the available external static pressure differential measured, in Pascal.

The circulation pump is not built into the appliance

If the circulation pump is not built into the appliance, the hydraulic power of the pump is defined as follows:

)pi(*qPhydrau −= (B.2)

where:

Phydrau is the hydraulic power of the pump, in Watts; Q is the water volume flow rate, in m³/s; Δpi is the available internal static pressure differential measured, in Pascal.

B.3 Circulation pump efficiency

The liquid circulation pump efficiency required to output the hydraulic power is determined using the following formula:

If the measured hydraulic power of the circulation pump is less than 500W, the pump efficiency is determined using the following equation:

hydrau0721.0 P3183.0

= (B.3)

b) If the measured hydraulic power of the circulation pump is greater than 500W, the pump efficiency is determined using the following equation:

0403.0)P(Ln092.0 hydrau −= (B.4)

where: η is the liquid circulation pump efficiency; Phydrau is the hydraulic power of the pump, in Watts;

The pump efficiency graphs as a function of the hydraulic power are given below as an indication.


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Figure B.1 — Pump efficiency as a function of hydraulic power


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Annex C Heating capacity tests — Flow chart and examples of various test

sequences

C.1 The flow chart in Figure E.1 illustrates the test procedure described in 6.1.2.

Figure C.1 — Flow chart

C.2 Figures E.2 to E.7 below show some scenarios liable to arise during a heating capacity test as specified in

6.1.2. All the examples show scenarios in which a heating-up period ends with a defrosting cycle.


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Figure C.2 — Stabilised mode heating capacity test

Figure C.3 — Transient mode heating capacity test without defrosting cycle

Figure C.4 — Transient mode heating capacity test with defrosting cycle during data acquisition period


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Figure C.5 — Transient mode heating capacity test with defrosting cycle during data acquisition period

Figure C.6 — Transient mode heating capacity tests with two full cycles during data acquisition period

Figure C.7 — Transient mode heating capacity tests with two full cycles during data acquisition period