Gas-fired domestic appliances producing hot water - Part 5: Assessment of energy consumption of gas fired appliances combined with electrical heat pump

This European Standard is applicable to gas-fired appliances producing domestic hot water. It applies to both
instantaneous and storage gas-fired appliances combined with electrical heat pump.
It applies to a package marketed as single unit or fully specified by a manufacturer that have:
- a gas heat input not exceeding 70 kW;
- a hot water storage capacity not exceeding 500 litres.
Standard EN 13203-1 sets out in qualitative and quantitative terms the performance in delivery of domestic
hot water for a selected variety of uses. It also gives a system for presenting the information to the user. This
Part 5 sets out a method for assessing the energy performance of gas fired appliances combined with heat
pump with electrically driven compressor according to EN 16147.
This European standard does not apply for gas boilers with recovery systems using combustion products as
heat source for the electrical heat pump.
When the electrical heat pump does not work for domestic hot water production in the summer period, the
present standard is not applicable for energy performances assessing, EN 13203-2 must be used.

Gasbeheizte Geräte für die sanitäre Warmwasserbereitung für den Hausgebrauch - Teil 5: Bewertung des Energieverbrauchs von Gasgeräten mit elektrischer Wärmepumpe

Appareils domestiques produisant de l'eau chaude sanitaire utilisant les combustibles gazeux - Partie 5 : Evaluation de la consommation énergétique des appareils à gaz combinés à une pompe à chaleur électrique

La présente Norme européenne est applicable aux appareils de production d’eau chaude sanitaire utilisant les combustibles gazeux. Elle s’applique à la fois aux appareils instantanés et à accumulation utilisant les combustibles gazeux, combinés à une pompe à chaleur électrique.
Elle s’applique à un ensemble commercialisé comme une seule unité ou entièrement spécifié par le fabricant, qui a :
- un débit calorifique inférieur ou égal à 400 kW ; et
- une capacité du ballon d’eau chaude (le cas échéant) inférieure ou égale à 2 000 l.
L’EN 13203-1 définit, en termes qualitatifs et quantitatifs, la performance en puisage d’eau chaude sanitaire pour une variété d’usages sélectionnée. Elle mentionne également un système pour présenter les informations à l’utilisateur. Le présent document définit une méthode pour évaluer les performances énergétiques des appareils utilisant les combustibles gazeux, combinés à une pompe à
chaleur équipée d’un compresseur entrainé par moteur électrique conformément à l’EN 16147. Elle définit différents profils de soutirage journaliers pour chaque utilisation d’eau chaude sanitaire, pour la cuisine, la douche, le bain et une combinaison de ces utilisations, ainsi que les modes opératoires d’essai correspondants, ce qui permet de comparer les performances énergétiques des différents appareils utilisant les combustibles gazeux et de les adapter aux besoins de l’utilisateur. Des parties spécifiques de l’EN 13203 s’appliquent lorsque d’autres technologies sont associées à une chaudière ou un chauffe-eau utilisant les combustibles gazeux pour produire de l’eau chaude sanitaire.
Le présent document ne s’applique pas aux chaudières à gaz équipées de systèmes de récupération utilisant les produits de combustion comme source thermique pour la pompe à chaleur électrique.
Lorsque la pompe à chaleur électrique ne fonctionne pas pour produire de l’eau chaude sanitaire en régime été, la présente norme n’est pas applicable pour l’évaluation des performances énergétiques et il convient alors d’utiliser l’EN 13203-2.

Plinske gospodinjske naprave za pripravo tople sanitarne vode - 5. del: Ocenjevanje rabe energije plinskih aparatov, kombiniranih z električno toplotno črpalko

Ta evropski standard se uporablja za plinske gospodinjske naprave za pripravo tople sanitarne vode. Uporablja se za pretočne ali shranjevalne plinske gospodinjske naprave v kombinaciji z električno toplotno črpalko. To velja za vse naprave, ki so na trgu na voljo kot samostojna enota ali kot paket in pri katerih po navedbah proizvajalca: – vhodna toplota plina ne presega 70 kW; – zmogljivost skladiščenja tople vode ne presega 500 litrov. Standard EN 13203-1 v kakovostnem in količinskem smislu določa zmogljivost za pripravo tople sanitarne vode za različne izbrane namene. Zajema tudi sistem za predstavitev informacij uporabniku. Ta 5. del določa metodo za ocenjevanje energetske učinkovitosti plinskih naprav, kombiniranih s toplotno črpalko z električnim kompresorjem v skladu s standardom EN 16147. Ta evropski standard se ne uporablja za plinske kotle z rekuperacijskimi sistemi, ki kot vir toplote za električno toplotno črpalko uporabljajo produkte zgorevanja. Kadar električna toplotna črpalka ne deluje za pripravo tople sanitarne vode v poletnem obdobju, se za ocenjevanje energetskih lastnosti ne uporablja ta standard; uporabiti je treba standard EN 13203-2.

General Information

Status
Published In Edit
Public Enquiry End Date
04-Apr-2018
Publication Date
12-Mar-2019
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Mar-2019
Due Date
09-May-2019
Completion Date
13-Mar-2019

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SLOVENSKI STANDARD
SIST EN 13203-5:2019
01-april-2019
3OLQVNHJRVSRGLQMVNHQDSUDYH]DSULSUDYRWRSOHVDQLWDUQHYRGHGHO
2FHQMHYDQMH]PRJOMLYRVWLUDEHHQHUJLMHSOLQVNLKDSDUDWRYNRPELQLUDQLK]
HOHNWULþQRWRSORWQRþUSDONR
Gas-fired domestic appliances producing hot water - Part 5: Assessment of energy
consumption of gas fired appliances combined with electrical heat pump

Gasbeheizte Geräte für die sanitäre Warmwasserbereitung für den Hausgebrauch - Teil

5: Bewertung des Energieverbrauchs von Gasgeräten mit elektrischer Wärmepumpe

Appareils domestiques produisant de l'eau chaude sanitaire utilisant les combustibles

gazeux - Partie 5 : Evaluation de la consommation énergétique des appareils à gaz

combinés à une pompe à chaleur électrique
Ta slovenski standard je istoveten z: EN 13203-5:2018
ICS:
27.080 7RSORWQHþUSDONH Heat pumps
91.140.65 Oprema za ogrevanje vode Water heating equipment
SIST EN 13203-5:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 13203-5:2019
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SIST EN 13203-5:2019
EN 13203-5
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2018
EUROPÄISCHE NORM
ICS 91.140.65
English Version
Gas-fired domestic appliances producing hot water - Part
5: Assessment of energy consumption of gas fired
appliances combined with electrical heat pump

Appareils domestiques produisant de l'eau chaude Gasbeheizte Geräte für die sanitäre

sanitaire utilisant les combustibles gazeux - Partie 5 : Warmwasserbereitung für den Hausgebrauch - Teil 5:

Évaluation de la consommation énergétique des Bewertung des Energieverbrauchs von Gasgeräten mit

appareils utilisant les combustibles gazeux combinés à elektrischer Wärmepumpe
une pompe à chaleur électrique
This European Standard was approved by CEN on 27 May 2018.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13203-5:2018 E

worldwide for CEN national Members.
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SIST EN 13203-5:2019
EN 13203-5:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 6

3 Terms and definitions ................................................................................................................................... 6

4 General test conditions ................................................................................................................................. 9

4.1 Reference conditions ..................................................................................................................................... 9

4.2 Specific heat source temperature conditions ....................................................................................... 9

4.3 Measurement uncertainties ..................................................................................................................... 10

4.3.1 General ............................................................................................................................................................. 10

4.3.2 Steady-state conditions .............................................................................................................................. 11

4.4 Test conditions .............................................................................................................................................. 11

4.4.1 General ............................................................................................................................................................. 11

4.4.2 Test room ........................................................................................................................................................ 11

4.4.3 Water supply .................................................................................................................................................. 12

4.4.4 Initial adjustment of the appliance ........................................................................................................ 12

4.4.5 Conditions for the determination of the maximum load profile ................................................. 13

4.4.6 Electrical supply ........................................................................................................................................... 13

5 Determination of the energy consumption of the appliance ........................................................ 13

5.1 General ............................................................................................................................................................. 13

5.2 Load profiles .................................................................................................................................................. 13

5.3 Determination of the energy recovered by the useful water ....................................................... 21

5.4 Calculation of gas energy ........................................................................................................................... 22

5.4.1 Calculation of daily gas energy consumption in summer mode .................................................. 22

5.5 Calculation of electrical energy ............................................................................................................... 22

5.5.1 Calculation of daily electrical energy consumption ........................................................................ 22

5.6 Corrections to apply for fans and liquid pumps ................................................................................ 23

5.6.1 Power absorbed by the fans of connected heat pumps .................................................................. 23

5.6.2 Power absorbed by liquid pumps .......................................................................................................... 24

5.7 Measurement of energy consumption in standby mode ................................................................ 24

5.7.1 General ............................................................................................................................................................. 24

5.7.2 Calculation of daily gas energy consumption in standby mode .................................................. 25

5.7.3 Calculation of daily auxiliary electrical energy consumption in standby mode ................... 25

5.8 Determination of daily auxiliary electrical energy consumption in off mode ....................... 26

6 Determination of the ratio of wasted water to total water ........................................................... 26

7 Eco design Related Products Data .......................................................................................................... 27

7.1 Water heating energy efficiency ............................................................................................................. 27

7.2 Annual fuel consumption (AFC) .............................................................................................................. 28

7.3 Annual electricity consumption (AEC) ................................................................................................. 28

7.4 Mixed water at 40°C (V40) for storage water heaters .................................................................... 29

Annex A (informative) Test conditions ............................................................................................................ 30

Annex B (informative) Test rig and measurement devices ....................................................................... 34

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B.1 General.............................................................................................................................................................. 34

B.2 Pressure measurement............................................................................................................................... 34

B.3 Temperature measurement ...................................................................................................................... 35

Annex C (informative) Declaration of the Maximum Load Profile ........................................................... 38

Annex D (informative) Packages covered by the present document ..................................................... 39

Annex E (informative) Additional performance data ................................................................................... 44

E.1 Heating time.................................................................................................................................................... 44

E.2 Standby power input ................................................................................................................................... 44

E.3 Coefficient of primary energy performance or primary energy yield (PER) .......................... 45

E.4 Total consumption of primary energy .................................................................................................. 45

Annex ZA (informative) Relationship between this European Standard and the ecodesign

requirements of Commission Regulation (EU) n° 814/2013 [OJEU L239 of 6 September

2013] aimed to be covered ........................................................................................................................ 47

Annex ZB (informative) Relationship between this European Standard and the energy labelling

requirements of Commission Delegated Regulation (EU) No 812/2013 [OJEU L239 of 6

September 2013] aimed to be covered ................................................................................................. 48

Annex ZC (informative) Relationship between this European Standard and the ecodesign

requirements of Commission Regulation (EU) n° 813/2013 [OJEU L239 of 6 September

2013] aimed to be covered ........................................................................................................................ 49

Annex ZD (informative) Relationship between this European Standard and the energy labelling

requirements of Commission Delegated Regulation (EU) No 811/2013 [OJEU L239 of 6

September 2013] aimed to be covered ................................................................................................. 50

Bibliography ................................................................................................................................................................. 51

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EN 13203-5:2018 (E)
European foreword

This document (EN 13203-5:2018) has been prepared by Technical Committee CEN/TC 109 “Central heating

boilers using gaseous fuels”, the secretariat of which is held by NEN.

This European Standard shall be given the status of a national standard, either by publication of an identical

text or by endorsement, at the latest by June 2019, and conflicting national standards shall be withdrawn at

the latest by June 2019.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), see informative Annex ZA, ZB, ZC or ZD, which are integral parts of this

document.

The main purpose of this revision is to provide a means of conforming to requirements of Commission

Delegated Regulation (EC) n° 813/2013, (EC) n° 811/2013, (EC) n° 812/2013 and (EC) n° 814/2013.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

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EN 13203-5:2018 (E)
Introduction

The safety operation of the boiler or water heater is not covered by this standard. Safety should be proved by

means of the essential safety requirements of the Gas Appliances Directive 2009/142/EC. This may be

achieved by compliance with the appropriate existing harmonized standards.
NOTE 1 Useful standards are EN 26, EN 89 and series EN 15502.

NOTE 2 The Gas Appliances Directive 2009/142/EC has been replaced by the Gas Appliances Regulation

426/2016/EU.
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EN 13203-5:2018 (E)
1 Scope

This European Standard is applicable to gas-fired appliances producing domestic hot water. It applies to both

instantaneous and storage gas-fired combined with electrical heat pump.

It applies to a package marketed as single unit or fully specified by the manufacturer that have:

— a heat input not exceeding 400 kW; and
— a hot water storage tank capacity (if any) not exceeding 2000 l.

EN 13203-1 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water

for a selected variety of uses. It also gives a system for presenting the information to the user. The present

document sets out a method for assessing the energy performance of gas fired appliances combined with heat

pump with electrically driven compressor according to EN 16147. It defines a number of daily load profiles

for each domestic hot water use, kitchen, shower, bath and a combination of these, together with

corresponding test procedures, enabling the energy performances of different gas-fired appliances to be

compared and matched to the needs of the user. Where other technologies are combined with a gas-fired

boiler or a water heater to produce domestic hot water, specific parts of EN 13203 apply.

The present document does not apply for gas boilers with recovery systems using combustion products as

heat source for the electrical heat pump.

When the electrical heat pump does not work for domestic hot water production in the summer period, the

present standard is not applicable for energy performances assessing, EN 13203-2 should be used.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes

requirements of this document. For dated references, only the edition cited applies. For undated references,

the latest edition of the referenced document (including any amendments) applies.

EN 14511-3:2018, Air conditioners, liquid chilling packages and heat pumps with electrically driven

compressors for space heating and cooling - Part 3: Test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
storage tank
reservoir for domestic hot water
3.2
nominal domestic hot water heat input of the boiler (Q )

value of the heat input of the boiler for the production of domestic hot water stated in the instructions, the

symbol of which is Q and the unit of which is kilowatt (kW)
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3.3
summer mode

conditions during which the appliance supplies energy only for the production of domestic hot water

3.4
winter mode

conditions during which the combination boiler supplies energy for the production of domestic hot water and

space heating
3.5
domestic water test temperature
temperature of the delivered water at which the tests are conducted
3.6
control cycle

the time cycle for keeping components and/or the storage tank (if any) of the domestic hot water circuit at

predetermined temperature level, consists of an «ON» duration time during which the heating of the domestic

hot water (by gas energy and/or auxiliary energy) is operating, and an «OFF» duration time during which no

heating occurs
3.7
useful water

quantity of water delivered at the tap for which the temperature increase is in accordance with the

requirement fixed for each individual delivery of the load profiles
3.8
wasted water

quantity of water delivered at the tap for which the temperature increase is not in accordance with the

requirement fixed for each individual delivery of the load profiles
3.9
standby mode

operating state in which the appliance can provide domestic hot water at any time

Note 1 to entry: In the case of an appliance with a control cycle for keeping components and/or the storage tank (if

any) of the domestic hot water circuit at predetermined temperature level no draw-off is made.

3.10
off mode

state of an appliance, selected by the user, in which domestic hot water cannot be provided

3.11
useful water flow rate
useful

quantity of water delivered by unit time at the tap for which the temperature increase is in accordance with

the requirement fixed for each individual draw-off of the load profiles
3.12
useful water temperature
water temperature, expressed in degrees Celsius, delivered at the tap
3.13
appliance flow rate

quantity of water delivered by the appliance by unit time before the mixing device, if applicable

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EN 13203-5:2018 (E)
3.14
appliance water temperature

water temperature, expressed in degrees Celsius, delivered by the appliance before the mixing device

3.15
water temperature rise in K

difference between the useful water temperature and the cold water temperature, at which hot water is

contributing to the reference energy as specified in the load profiles
3.16
water temperature rise for basin draw-off types in K

difference between the useful water temperature and the cold water temperature, to be achieved during the

water draw-offs, with a minimum value as specified in the load profiles

Note 1 to entry: The minimum temperature difference for basin draw-offs as specified in the load profiles shall be

achieved at least during the water draw-offs.
3.17
rapid response temperature sensor

measuring instrument with a response time such that 90 % of the final temperature rise, from 15 °C to 100 °C,

is obtained within about 1 s, when the sensor is plunged into still water.
3.18
indoor air

heat source for a heat pump which absorbs heat by a heat exchanger in direct contact with the air inside a

building
3.19
brine
heat transfer medium which has a freezing point depressed relative to water
3.20
gas-fired appliance combined with electrical heat pump air/water

appliance which is either placed on the market or specified as a complete package to deliver domestic hot

water or domestic hot water and heating, comprising as relevant:
— electrical heat pump;
— gas-fired appliance;
— ducts if appropriate;
— thermal store.
3.21
exhaust air
air from the air conditioned space entering the outdoor heat exchanger
[EN 14511-1:2018, 3.22]
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EN 13203-5:2018 (E)
3.22
external static pressure difference
ext

positive pressure difference measured between the air (or water) outlet section and the air (or water) inlet

section of the unit, which is available for overcoming the pressure drop of any additional ducted air (or water)

circuit
3.23
internal static pressure difference
int

negative pressure difference measured between the air (or water) outlet section and the air (or water) inlet

section of the unit, which corresponds to the total pressure drop of all components on the air (or water) side

of the unit
4 General test conditions
4.1 Reference conditions
Unless otherwise stated, the general test conditions shall be as follows:
— cold water temperature: 10 °C;
— maximum average variation over the test period: ± 2 K;
— cold water pressure: (2 ± 0,1) bar;
— ambient air temperature: 20 °C;
— maximum average variation over the test period ± 2 K;
— maximum variation during the tests ± 2 K;

— electrical supply voltage: (230 ± 2) V (single phase) or (410 ± 4) V (three phase).

4.2 Specific heat source temperature conditions

The tests shall be carried out at the test conditions specified in Table 1 as appropriate.

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EN 13203-5:2018 (E)
Table 1 — Test conditions for particular types of systems
Type of heat source Heat source Range of ambient Ambient temperature
temperature (°C) temperature for heat of storage tank (°C)
pump
(°C)
Outside air (heat pump
7 ± 0,2 20 ± 3 20 ± 3
indoor) with air duct
(6 ± 0,3)
Outside air (heat pump
7 ± 0,2 20 ± 3
7 ± 3
outdoor)
(6 ± 0,3)
a) a)
Exhaust air 20 ± 0,2
20 ± 3 20 ± 3
(12 ± 0,3)
Water (inlet) 10 ± 0,15 20 ± 3 20 ± 3
Brine (inlet) 0 ± 0,15 20 ± 3 20 ± 3
Direct evaporation 4 ± 0,5 20 ± 3 20 ± 3

In this case, the ambient temperature of the heat pump is the same as the temperature of the heat source. The

difference with EN 16147 is justified because of the possible installation of the appliance into a living room.

NOTE 1 All heat source temperatures are inlet temperatures in °C.
NOTE 2 All air temperatures in (brackets) are wet bulb temperatures in °C.

NOTE 3 Permissible external pressure difference or associated internal pressure difference at the outdoor heat

exchanger as stated in the installation and/or operation manual in Pascal (Pa) for appliances with duct

connection.
4.3 Measurement uncertainties
4.3.1 General

Except where otherwise stated in the clauses describing the tests, the uncertainties of measurements carried

out shall not be greater than the maximum uncertainties indicated below.

The standard deviations shall be evaluated taking into account the various sources of uncertainty:

contribution from the instrument, repeatability, calibration, ambient conditions, etc.

— water flow rate: ± 1 %;
— gas flow rate: ± 1 %;
— time: ± 0,2 s;
— temperatures:
— ambient: ± 1 K;
— air as heat source dry bulb temperature: ± 0,2 °C;
— air as heat source wet bulb temperature: ± 0,3 °C;
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EN 13203-5:2018 (E)
— water/brine as heat source: ± 0,15 K;
— water: ± 0,5 K;
— gas: ± 0,5 K;
— gas pressure: ± 1 %;
— gas calorific value: ± 1 %;
— gas density: ± 0,5 %;
— electrical energy: ± 2 %.

The stated measurement uncertainties relate to individual measurements. For measurements that combine a

number of individual measurements, smaller uncertainties on the individual measurements may be necessary

to ensure a total uncertainty within ± 2 % under the steady-state conditions as defined by 4.3.2.

These uncertainties correspond to two standard deviations (2σ).
4.3.2 Steady-state conditions

Steady-state operating conditions are regarded as established when the appliance operates for sufficient time

to reach thermal stabilization.

To reach the steady-state the water temperature at the outlet of the appliance shall not vary by more

than ± 0,5 K.

NOTE This condition can be reached with a gas which is different from the reference gas, provided that the

appliance is supplied with the reference gas for at least 5 min before the requirements are verified.

4.4 Test conditions
4.4.1 General

Except where otherwise stated, the appliance is tested under the following conditions.

The tests shall be carried out only in summer mode as defined in 3.3, and the appliance shall be set in summer

mode.

If liquid heat transfer media other than water are used, the specific heat capacity and density of such heat

transfer media shall be determined and taken into consideration in the evaluation.

For all tests defined by this standard, the same adjustment of the appliance shall be maintained.

The load profile used for the measurement shall be the one declared according to the technical instruction of

the appliance (see also Annex C).

The test shall be performed in the setting in which the appliance is delivered, and which is documented as

such in the technical instructions.

If there are temporary user's settings (automatically self-resetting within 24 h), these shall not be active.

4.4.2 Test room

The package shall be installed in a well-ventilated, draught-free room (air speed less than 0,5 m/s).

The package shall be protected from direct solar radiation and radiation from heat generators.

If the package incorporates an air source outdoor heat exchanger a further test room is needed. The size of

this test room shall be designed to avoid any resistance to air flow at the air inlet and air outlet orifices of the

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EN 13203-5:2018 (E)

test object. The air flow through this room shall not cause any short circuit between the two orifices, and

therefore the velocity of air flow at these two locations shall not exceed 1,5 m/s when the test object is

switched off. The air velocity in the room shall also not be greater than the mean velocity through the unit

inlet.

Unless otherwise stated in the technical documentation, the air inlet and air outlet orifices shall not be less

than 1m from the surfaces of the test room; this also applies to any measuring ducts.

The setting of the external static pressure difference on the air side for heat pumps with duct connection is

described by 4.4.1.4 of EN 14511-3:2018.

For heat pumps separated from the tank, the liquid flow rate has to be set on the liquid outlet side of the heat

pump to the nominal flow rate specified in the technical documentation.

The package shall be installed and connected for the test as specified in the installation instructions.

Temperature and pressure measuring points shall be situated in order to obtain significant mean values.

Set points for internal control equipment of the unit such as thermostats, pressure switches or mixing valves

shall be set to the values stated in the technical documentation.

Air and entrained gases shall be removed from all water and other heat transfer liquid systems

In the case of package incorporating a single split heat pump, the following installation conditions shall be

complied with for the tests:

a) each refrigerant pipe shall be installed in accordance with the installation instructions;

b) the connecting pipes shall be installed so that the difference in elevation does not exceed 2,5 m. The

length of each connecting pipe shall be between 5 m and 7,5 m;

c) thermal insulation shall be applied to the pipes in accordance with the installation instructions;

d) unless constrained by the design at least half of the interconnecting pipes shall be exposed to the outdoor

conditions with the rest of the pipes exposed to the indoor conditions.

For indirect systems each water pipe shall be installed in accordance with the installation instructions to the

maximum stated length or 5 m whichever is shorter. Thermal insulation shall be applied to the pipes in

accordance with the installation instructions.
4.4.3 Water supply
For the tests
...

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