Date Description of modification Revision number 14-12-2015 Initial version 1

10/03/2017

Addition of air/air Editorial changes

Annex E included in annex A – reference to prEN12102-2 suppressed – Reference to EN 15979-1

is added – rerating process chart was added –one testing point is added for periodic control test –

periodic control test selection has been modified

2

CONTENTS 1 Definition of types and sub-types ............................................................................... 2

1.1 Type definition ........................................................................................................ 21.2 Sub-type definition ................................................................................................. 21.3 Model definition ...................................................................................................... 21.4 First admission ....................................................................................................... 2

1.4.1 First admission-space heating/cooling testing ......................................... 31.4.2 First admission-DHW testing ................................................................... 41.4.3 Data declaration ....................................................................................... 5

1.5 Modification and adding of sub-types .................................................................... 5

2 Admission test .............................................................................................................. 52.1 Test Points for all types except air/air types .......................................................... 5

2.1.1 Heat pump for space heating only ........................................................... 52.1.2 Combination heat pump ........................................................................... 62.1.3 Heat pump for domestic hot water only ................................................... 7

2.2 For air/air types ...................................................................................................... 82.2.1 Heat pump for space heating only ........................................................... 82.2.2 Heat pump for space cooling only ............................................................ 82.2.3 Heat pump for space heating and cooling ............................................... 9

3 Periodic surveillance test ........................................................................................... 103.1 Product to be tested ............................................................................................. 103.2 Performances to be tested .................................................................................. 10

3.2.1 Heat pumps for space heating and combination heat pumps except air/air types ............................................................................................ 10

3.2.2 Heat pumps designed for domestic hot water production ...................... 113.2.3 Air/air heat pumps for space heating only .............................................. 113.2.4 Air/air heat pumps for space cooling only .............................................. 113.2.5 Air/air heat pumps for space heating and cooling .................................. 12

3.3 Control test process ............................................................................................. 123.4 Rerating rules ....................................................................................................... 13

3.4.1 Space heating/cooling heat pump and combination heat pump rerating rules ....................................................................................................... 13

3.4.2 Heat pump designed for domestic hot water production rerating rules .. 14

1 Definition of types and sub-types 1.1 Type definition A type of heat pumps is defined by the use of the same heat source, heat sink and driving energy (gas, electricity etc.). The types covered by the KEYMARK Scheme are: ─ Outdoor air (or exhaust air)/water - heat pumps ─ Water/water (including brine/water) - heat pumps ─ Direct expansion/water - heat pumps ─ Air/air - heat pumps and air conditioners except single duct and double duct units

The types are declared by the manufacturers. 1.2 Sub-type definition A sub-type is part of a type. Heat pumps with an identical refrigeration circuit design are considered as being the same sub-type if they fulfil all conditions below: ─ Same compressor: identical (same manufacturer and commercial reference) ─ Same condenser identical (same manufacturer and commercial reference) ─ Same evaporator: identical (same manufacturer and commercial reference) – except for

air/air multi-split units. ─ Same defrost process (when relevant) ─ Expansion device: same technology In addition for combination heat pump and heat pumps only designed for domestic hot water production: ─ Same tank volume ─ Same heat exchanger

For air/air multi-split units: sub-type definition only applies to outdoor unit. 1.3 Model definition A sub-type may consist of several different models, i.e. heat pumps using identical refrigeration circuits, but otherwise differ in design. Examples of such differences are given, but not limited to the list below

• With or without integrated circulator pump(s) • With or without integrated storage tank • With or without integrated back up heater • Different sizes and corrosion protection of storage tank(s) • Different location and dimensions on pipe connections • Different electrical supply (frequency, single/three phases) • Different brand names

1.4 First admission Admission tests shall be conducted in a recognized laboratory (see Annex H). Samples to be tested for type admission shall be selected by the certification body.

For the sampling process the applicant is obliged to provide a minimum of three units (traceable by serial numbers) for the subtype or, if applicable, subtypes decided by the certification body. The certification body will then point out one random unit (traceable by serial number) from stock that is to be tested by a third party laboratory. The certification body also indicates to the manufacturer the testing conditions (application climates and part load condition). The manufacturer shall inform the certification body within the following month about the schedule and place for the tests. 1.4.1 First admission-space heating/cooling testing 1.4.1.1 Outdoor air (exhaust air)/water, water (brine)/water Table 1 Minimum number of sub-types to be tested in a type

Number of sub-types Number of tests ≤ 5 1

> 5 ≤ 10 2

> 10 ≤ 15 3

> 15 ≤ 20 4

> 20 ≤ 25 5

> 25 every 5th sub-type will require one additional test

1.4.1.2 Air/air For air/air type, different rules for single split/package units and multi-split units apply.

1.4.1.2.1 Single split and package units

Table 2 Minimum number of sub-types to be tested in a type

Number of sub-types Number of tests ≤ 10 1

> 10 ≤ 20 2

> 20 ≤ 30 3

Number of sub-types Number of tests > 30 ≤ 40 4

> 40 ≤ 50 5

> 50 every 10th sub-type will require one additional test

1.4.1.2.2 Multi-split units

Table 3 Minimum number of outdoor sub-types to be tested in a type

Number of sub-types Number of outdoor units to be tested ≤ 5 1

> 5 ≤ 10 2

> 10 ≤ 15 3

> 15 ≤ 20 4

> 20 ≤ 25 5

> 25 every 5th sub-type will require one additional test

As each outdoor unit can be combined with several kinds of indoor units

- Wall - Ducted - Cassette - Floor - Ceiling - etc.

The combination of the outdoor unit with indoor units shall be selected so that the capacity ratio is equal to 1 (+-5%) within the combinations declared by the manufacturer. All declared kinds of indoor units shall be tested in combination with one or several of the selected outdoor units at least once. 1.4.2 First admission-DHW testing

Table 4 Minimum number of sub-types to be tested in a type

Number of sub-types Number of tests ≤ 5 1

> 5 ≤ 10 2

> 10 ≤ 15 3

> 15 ≤ 20 4

> 20 ≤ 25 5

> 25 Every 5th sub-type will require one additional test

1.4.3 Data declaration The applicant shall declare all the requested data according annex D1 for all sub-types. 1.5 Modification and adding of sub-types ─ Modification of certified types (see Annex F)

• Additional tests are only needed if the modification has an impact on the model performance (either on heating/cooling performance, DHW production or sound power level ); the manufacturer has to inform the certification body about changes of components.

• The rules for the number of tests to be performed are the same as for admission

─ Addition of one or several sub-types in a type (see Annex F)

• The rules for the number of sub-types to be tested are the same as for admission • The test must be performed in a recognized laboratory

─ Extension of certified sub-types to another brand (see Annex G)

• No additional product test is required • Technical documentation check according to EN 14511-4 / EN 16147 / EN 15879-1

The manufacturer has to sign and provide a written confirmation that no technical change that can affect the performance, has been made to the sub-types. 2 Admission test 2.1 Test Points for all types except air/air type 2.1.1 Heat pump for space heating only 2.1.1.1 Low temperature heat pump a) A7/W35; A20/W35; B0/W35; W10/W35 according to EN 14511-2 and E4/W35 according

to EN 15879-1. If both W10 and B0 as heat source are certified, test shall be carried out with both heat sources. b) Bivalent point according to EN 14825 for average climate c) One other testing condition to be chosen by the certification body according to

EN 14825 for average climate d) For any other climate, bivalent point shall be tested according to EN 14825 2.1.1.2 Medium temperature heat pump For each 35°C and 55°C application, the following tests shall be performed: a) A7/W35/55; B0/W35/55; W10/W35/55; A20/W35/55 (exhaust air heat pump) according to

EN 14511-2 and E4/W35/55 according to EN 15879-1. If both W10 and B0 as heat source are certified, test shall be carried out with both heat sources. b) Bivalent point according to EN 14825 for average climate

c) One other testing condition to be chosen by the certification body according to EN 14825 for average climate

d) For any other climate, bivalent point shall be tested according to EN 14825 2.1.1.3 Sound power level Test shall be performed according to EN 12102 for average climate at the certified highest temperature application. For heat pumps certified for brine and water as heat source, the sound power level test is performed using brine. 2.1.1.4 Safety test Safety test shall be performed: According to EN 14511-4 clauses as follow: ─ Air/Water chapter 4.2.1 starting test according to table 1 chapter 4.4 shutting off the heat transfer medium flow chapter 4.5 complete power supply failure chapter 4.7 defrost test, only for outdoor air units ─ Brine/Water chapter 4.2.1 starting test according to table 1 chapter 4.4 shutting off the heat transfer medium flow chapter 4.5 complete power supply failure ─ Water/Water chapter 4.2.1 starting test according to table 1 chapter 4.4 shutting off the heat transfer medium flow chapter 4.5 complete power supply failure In case the heat pump can be used with brine or water, only one application (brine or water) shall be tested. According to EN 15879-1 clauses as follow: - chapter 7.1 starting test according to Table 8 - chapter 7.2.2 pressure drop - chapter 7.2.3 shutting of the heat transfer medium flow - chapter 7.2.4 complete power supply failure 2.1.1.5 Air flow for exhaust air heat pumps The manufacturer shall declare the exhaust air volume flow that shall be used for space heating test. 2.1.2 Combination heat pump 2.1.2.1 Heating mode tests a) A7/W55; A20/W55; B0/W55; W10/W55 according to EN 14511-2 and E4/W55 according

to EN 15879-1. If both W10 and B0 as heat source are certified, test shall be carried out with both heat sources. b) Bivalent point according to EN 14825 for average climate c) One other testing condition to be chosen by the certification body according to

EN 14825 for average climate d) For any other climate, bivalent point shall be tested according to EN 14825 35°C application shall be certified as an option, in this case, testing at 35°C application shall be performed according 2.1.1.1.

2.1.2.2 Sound power level test Test shall be carried out according to EN 12102 for 55 °C application for average climate. For heat pumps certified for brine and water as heat source, the acoustic test is carried out using brine. 2.1.2.3 Domestic hot water test Tests shall be performed according to EN 16147 for average climate. Tests may also be carried out according to EN 16147 for any other declared climate. The tests shall be performed for the load profiles as declared by the manufacturer In the data sheet for each climate where relevant. For water (brine)/water type, in case brine and water as heat source are declared, only one heat source shall be tested. 2.1.2.4 Safety test according Safety test shall be performed: According toEN 14511-4 clauses as follow: ─ Air/Water chapter 4.2.1 starting test according to table 1 chapter 4.4 shutting off the heat transfer medium flow chapter 4.5 complete power supply failure chapter 4.7 defrost test, only for outdoor air unit ─ Brine/Water chapter 4.2.1 starting test according to table 1 chapter 4.4 shutting off the heat transfer medium flow chapter 4.5 complete power supply failure ─ Water/Water chapter 4.2.1 starting test according to table 1 chapter 4.4 shutting off the heat transfer medium flow chapter 4.5 complete power supply failure In case the heat pump is declared for brine and water as heat source, only one heat source (brine or water) shall be tested. According to EN 15879-1 clauses as follow: - chapter 7.1 starting test according to Table 8 - chapter 7.2.2 pressure drop - chapter 7.2.3 shutting of the heat transfer medium flow - chapter 7.2.4 complete power supply failure 2.1.2.5 Air flow for exhaust air heat pumps The manufacturer shall declare the exhaust air volume flow that shall be used for both space heating test and domestic hot water test. 2.1.3 Heat pump for domestic hot water only 2.1.3.1 Performance tests Tests shall be carried out according to EN 16147 for average climate. Tests may also be performed according to EN 16147 for any other declared climate. The tests shall be performed for the load profiles as declared by the manufacturer in the data sheet for each climate where relevant.

For water (brine)/water type, in case brine and water as heat source are declared, only one heat source shall be tested. 2.1.3.2 Sound power level Test shall be performed for average climate according to the European standard when available. 2.1.3.3 Air flow for exhaust air heat pumps The manufacturer shall declare the exhaust air volume flow that shall be used. 2.2 For air/air types 2.2.1 Heat pump for space heating only 2.2.1.1 Test in heating mode

a) Bivalent point according to EN 14825 for average climate b) One other testing condition to be chosen by the certification body according to

EN 14825 for average climate c) For any other climate, bivalent testing point shall be tested according to EN 14825

2.2.1.2 Sound power level Test shall be carried out according to EN 12102 for average climate. 2.2.1.3 Safety test Safety test shall be performed according to EN 14511-4 clauses as follow: chapter 4.2.1 starting test according to table 1 chapter 4.4 shutting off the heat transfer medium flow chapter 4.5 complete power supply failure chapter 4.7 defrost test 2.2.2 Heat pump for space cooling only 2.2.2.1 Test in cooling mode

a) “A” condition according to EN 14825 b) One other testing condition to be chosen by the certification body according to

EN 14825 2.2.2.2 Sound power level Test shall be carried out according to EN 12102 2.2.2.3 Safety test Safety test shall be performed according EN 14511-4 clauses as follow: chapter 4.2.1 starting test according to table 1 chapter 4.4 shutting off the heat transfer medium flow chapter 4.5 complete power supply failure chapter 4.7 defrost test

2.2.3 Heat pump for space heating and cooling 2.2.3.1 Test in cooling mode

a) “A” condition according to EN 14825 b) One other testing condition to be chosen by the certification body according to

EN 14825

2.2.3.2 Test in heating mode

a) Bivalent point according to EN 14825 for average climate b) One other testing condition to be chosen by the certification body according to

EN 14825 for average climate c) For any other climate, bivalent testing point shall be tested according to EN 14825

2.2.3.3 Sound power level Test shall be carried out according to EN 12102 in cooling mode. 2.2.3.4 Safety test Safety test shall be performed according to EN 14511-4 clauses as follow: chapter 4.2.1 starting test according to table 1 chapter 4.4 shutting off the heat transfer medium flow chapter 4.5 complete power supply failure chapter 4.7 defrost test

3 Periodic surveillance test 3.1 Product to be tested

• Number of sub-types to be tested annually One sub-type per type at each manufacturing site (see Annex B) shall be tested. if heat pump for space heating and combination heat pumps are certified, at least one combination heat pump shall be tested every year for heating and DHW production.

If the manufacturing of a type takes place at more than one manufacturing site, the sub-type to be tested shall be selected from a different manufacturing site every year. If a test fails, an additional test for the same type from the same manufacturing site is required in the following year. The process is described through an example in a note at the end of this document.

For air/air units the number of tests is based on the number of manufacturing sites of the outdoor units.

• Sample selection

The unit to be tested may be chosen during the annual factory inspection, from the existing stock of products or directly from the production line. This rule apply for both indoor and outdoor units in case of split type heat pumps. The certification body defines the testing conditions (climates and part load conditions). The manufacturer shall inform the certification body within the following month about the schedule and place for the tests.

3.2 Performances to be tested 3.2.1 Heat pumps for space heating and combination heat pumps except air/air type 1. Sound power level is tested according EN 12102 both outdoor and indoor units shall be

tested where relevant. In the case of low temperature heat pumps, the sound power level is tested at 35 °C water temperature condition, in the case of medium temperature heat pumps or combination heat pumps, the sound power level is to be tested at 55 °C water temperature condition.

2. For low temperature heat pump:

a) For a sub-type declared for water/water and brine/water, one of these 2 heat sources has to be chosen by the certification body for being tested.

b) Standard rating condition indoor 35 °C following EN 14511 or EN 15879-1when relevant.

c) Bivalent temperature conditions for average climate following EN 14825 d) One other part load condition to be chosen by the certification body according to EN

14825 for average climate e) For any other declared climate, bivalent testing point and another part load condition

to be chosen by the certification body shall be tested according to EN 14825 3. For medium temperature heat pump:

35 °C or 55 °C application has to be chosen by the certification body, then the same test as described in (2.) is to be applied.

4. For combination heat pump:

a) For a sub-type declared for water/water and brine/water, one of these 2 heat sources has to be chosen by the certification body for being tested.

b) Heating mode test: o if only 55°C application is declared then same test as described in (2.) is to

be applied for 55°C application. o If both 35°C and 55°C applications are declared, 35 °C or 55 °C application

has to be chosen by the certification body, then the same test as described in (2.) is to be performed.

c) DHW efficiency, ƞDHW, according EN 16147 under average climate for the load profile declared by the manufacturer.

d) efficiency, ƞDHW, according EN 16147 under another declared climate for the load profile declared by the manufacturer.

3.2.2 Heat pump designed for domestic hot water production ─ For a sub-type declared for water/water and brine/water, one of these 2 heat source has

to be chosen by the certification body for being tested ─ DHW efficiency, ƞDHW, according EN 16147 for average climate for the load profile

declared by the manufacturer. ─ efficiency, ƞDHW, according EN 16147 under another declared climate for the load profile

declared by the manufacturer. ─ V40 according to EN 16147 ─ sound power level according to the European standard when it will be available. When

relevant, both indoor and outdoor units shall be tested.

3.2.3 Air/air heat pump for space heating only

1. Sound power level Sound power level is tested according EN 12102. Both outdoor and indoor units shall be tested where relevant. For package units, both outdoor and indoor sound power lever shall be tested.

2. Heating a) Bivalent temperature conditions for average climate following EN 14825 b) One other part load condition to be chosen by the certification body according to

EN 14825 for average climate c) For any other declared climate, bivalent testing point and another part load

condition to be chosen by the certification body shall be tested according to EN 14825

3.2.4 Air/air heat pump for space cooling only

1. Sound power level Sound power level is tested according EN 12102. Both outdoor and indoor units shall be tested where relevant. For package units, both outdoor and indoor sound power lever shall be tested.

2. Cooling a) Part load condition “A” according EN1 4825 b) One other part load condition to be chosen by the certification body according to EN

14825

3.2.5 Air/air heat pump for space heating and cooling

1 Sound power level Sound power level is tested according EN 12102 in cooling mode. Both outdoor and indoor units shall be tested where relevant. For package units, both outdoor and indoor sound power lever shall be tested.

2 Heating

a) Bivalent temperature conditions for average climate following EN 14825 b) One other part load condition to be chosen by the certification body according to EN

14825 for average climate c) For any other declared climate, bivalent testing point and another part load condition

to be chosen by the certification body shall be tested according to EN 14825

3. Cooling

a) Part load condition “A” according EN14825 b) One other part load condition to be chosen by the certification body according to EN

14825

3.3 Control test process

During the inspection, the auditor (under the responsibility of the certification body) selects one product from stock or production line. The certification body indicates to the manufacturer which application and conditions (temperature, climate) are to be tested. The manufacturer has to inform the certification body within the following month the test schedule and place.

Pass: Next surveillance test after two years

� Fail

CB choose another specimen of the same sub-type to be tested unit (B). Manufacturer has the option to choose another recognised lab for this test

� Fail

Full measurement of unit (B) and rerating of the sub-type according to results from second test

CB choose randomly a unit of the production line or stock. This unit (A) is to be tested 3rd party (defined number of measuring points))

Pass: Next surveillance test after one year

Loss of KEYMARK for all sub-types in the failed type.

� Fail

CB choose another specimen of the same sub-type to be tested unit (D). Manufacturer has the option to choose another recognised lab for this test

� Fail

Full measurement of unit (D) and rerating of the type according to results from second test

1.year

2.year

� Fail

CB choose another specimen of the same sub-type to be tested unit (F). Manufacturer has the option to choose another recognised lab for this test

� Fail

3.year

CB choose randomly a unit of the production line or stock. This unit (E) is to be tested 3rd party (defined number of measuring points))

CB choose randomly a unit of the production line or stock. This unit (C) is to be tested 3rd party (defined number of measuring points))

In case of test failure, the applicant can ask for a second test on another specimen of the same model of the same sub-type selected under responsibility of the certification body. The testing conditions are the same as the first product. If the test is failed again, the sub-type is rerated. Another test is carried out the following year, on another sub-type of the type. In case of another failure, all the sub-type of the type are rerated. 3.4 Rerating rules 3.4.1 Space heating/cooling heat pump and combination heat pump rerating rules 3.4.1.1 Space heating/cooling mode Tolerance on rated COP/EER and rated heating/cooling capacity according EN14511 testing is -5%. Two testing conditions according EN 14825 are tested for the application and climate chosen by the certification body. If the COP/EER obtained for the 2 testing conditions are within -8 % tolerance of the declared ones, the ƞs,/SCOP/SEER is calculated using the declared COP/EER and the Prated is calculated from the heating capacity declared at bivalent temperature condition. If ƞs, and SCOP/SEER and Prated are within the -8 % tolerance, the test is passed. If at least one of the 2 measured COP/EER is not within the -8 % tolerance or if the calculated ƞs,/SCOP/SEER is not within the -8%, the test should continue and all the EN 14825 testing conditions for the application and climate chosen are tested. The ƞs /SCOP/SEER is then calculated from the measured COP/EER. If the result is within the -8 % tolerance, the test is passed. If the ƞs is in tolerance but not the Prated, then Prated is re-rated for the tested sub-type. The new Prated shall be equal to the measured Prated. If the test is not passed, then the second selected heat pump is tested in the same way. In case of a new failure, all the sub-types of the type for every climate and every application are re-rated accordingly with the deviation measured on ƞs minus 8 %. The average deviation of the 2 tests shall be considered. E.g.: if the average deviation is equal to 10 %, then all the efficiency values shall be decreased by 2 %.

3.4.1.2 Sound power level test The sound power level is tested in average climate for the highest application. If the outdoor or indoor unit measurement is not within the 2.49 dBA tolerance, then the second selected product is tested If the second outdoor or indoor unit measurement is not within the 2.49 dBA tolerance then all sub-type of the type sound power shall be re-rated with the deviation minus 2.49 dBA. The average deviation of the 2 tests shall be considered. Same rule apply to indoor and outdoor unit. E.g.: if the average deviation is equal to 3 dBA on the outdoor unit, no deviation on indoor unit. All outdoor unit sound powersound power level values shall be increased by 1 dBA. 3.4.1.3 Domestic hot water (DHW) test

DHW test shall be performed under climate selected by the certification body. If the measured ƞdhw is not within the -8 % tolerance, the test is failed, then the second selected product is tested. In case of failure, all the domestic hot water performance for all the sub-types of the type shall be re-rated by the deviation minus 8.0 %. The average deviation of the 2 tests shall be considered.

E.g.: if the average deviation observed is equal to 12 %, then all the efficiencies shall be decreased by 4 %. 3.4.2 Heat pump designed for domestic hot water production rerating rules 3.4.2.1 Sound power level test The Sound power level is tested in average climate. In case outdoor or indoor unit measurement is outside the 2.49 dBA tolerance, the Sound power level test has failed. 3.4.2.2 Domestic hot water (DHW) test DHW test shall be performed under climate selected by the certification body. If the measured ƞdhw is not within the 8 % tolerance, the test is failed, then the second selected product is tested. If the V40 is not within the -3 % tolerance, the test fails and the second selected product is tested. In case of a new failure, the V40 of all the sub-type of the type shall be re-rated by the deviation minus 3 %. The average deviation of the 2 tests shall be considered. E.g.: if the average deviation observed is equal to 5 %, then all the V40 shall be decreased by 2%.

Note related to clause 3.1: 3 types; 4 manufacturing sites

Matrix

Year 1

The tested sub-types of type 3 and type 5 have to be rerated. Type 3 and type 5 have to be re-tested in the next year. Type 4 needs no surveillance test in the following year.

Year 2

The tested sub-types of type 2 has to be rerated. Type 2 has to be re-tested in the next year.

Year 3

The tested sub-types of type 1 has to be rerated. Type 1 has to be re-tested in the next year. All sub-types of the tested type 2 have to be rerated. Type 2 has to be re-tested in the next year. Type 4 needs no surveillance test in the following year.

Year 4