Gas-fired endothermic engine driven heat pumps - Part 4: Test methods

1.1   Scope of FprEN 16905 series
This European Standard specifies the requirements, test methods and test conditions for the rating and performance calculation of air conditioners and heat pumps using either air, water or brine as heat transfer media, with gas-fired endothermic engine driven compressors when used for space heating, cooling and refrigeration, hereafter referred to as “GEHP appliance”.
This European Standard only applies to appliances with a maximum heat input (based on net calorific value) not exceeding 70 kW at standard rating conditions.
This European Standard only applies to appliances under categories I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P and II2Er3P according to EN 437.
This European Standard only applies to appliances having:
a)   gas fired endothermic engines under the control of fully automatic control systems;
b)   closed system refrigerant circuits in which the refrigerant does not come into direct contact with the fluid to be cooled or heated;
c)   where the temperature of the heat transfer fluid of the heating system (heating water circuit) does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the:
1)   heating water circuit (if installed) does not exceed 6 bar;
2)   domestic hot water circuit (if installed) does not exceed 10 bar.
This European Standard applies to appliances only when used for space heating or space cooling or for refrigeration, with or without heat recovery.
The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by this European Standard.
Packaged units, single split and multisplit systems are covered by this European Standard. Single duct and double duct units are covered by this European Standard.
The above appliances can have one or more primary or secondary functions.
This European Standard is applicable to appliances that are intended to be type tested. Requirements for appliances that are not type tested would need to be subject to further consideration.
In the case of packaged units (consisting of several parts), this European Standard applies only to those designed and supplied as a complete package.
NOTE   All the symbols given in this text are used regardless of the language used.
1.2   Scope of FprEN 16905 4
This part of the FprEN 16905 series specifies the test methods for gas-fired endothermic engine driven heat pumps for heating and/or cooling mode including the engine heat recovery.

Gasbefeuerte endothermische Motor-Wärmepumpen - Teil 4: Prüfverfahren

1.1   Anwendungsbereich von prEN 16905
Diese Europäische Norm legt die Anforderungen, Prüfverfahren und Prüfbedingungen für die Bewertung und Leistungsberechnung von Luftkonditionierern und Wärmepumpen mit gasbefeuerten endothermischen motor-getriebenen Verdichtern fest, die entweder Luft, Wasser oder Sole als Wärmeübertragungsmedium verwenden und zur Heizung, Kühlung und Kältetechnik dienen, nachfolgend als "GEHP Gerät" bezeichnet.
Diese Europäische Norm gilt ausschließlich für Geräte mit einer maximalen Wärmebelastung von 70 kW (bezogen auf den Heizwert [NCV; en: net calorific value]) bei Norm-Nennbedingungen.
Diese Europäische Norm gilt entsprechend der EN 437 ausschließlich für Geräte der Kategorien I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P und II2Er3P.
Diese Europäische Norm gilt ausschließlich für Geräte mit:
-   endothermischen Gasmotoren, die durch vollständig automatisierte Regelungen gesteuert werden;
-   geschlossenen Kühlkreislaufsystemen, in denen das Kühlmittel nicht direkt mit der zu kühlenden oder zu erwärmenden Flüssigkeit in Berührung kommt;
-   einer Temperatur des Wärmeübertragungsmediums im Heizsystem (Heizwasserkreis), die im normalen Betrieb 105 °C nicht überschreitet:
-   einen höchsten Betriebsdruck im:
-   Heizungswasserkreislauf (falls  installiert), der 6 bar nicht  überschreitet;
-   Trinkwasserkreislauf (falls installiert), der 10 bar nicht überschreitet.
Diese Europäische Norm gilt ausschließlich für Geräte, die zur Raumheizung oder -kühlung oder zur Kälteerzeugung mit oder ohne Wärmerückgewinnung angewendet werden.
In dieser Europäischen Norm werden keine Geräte behandelt, deren Kondensator mit Luft oder durch Verdampfung von zusätzlichem Wasser auf der Außenseite gekühlt wird.
In dieser Europäischen Norm werden Systeme, Single Split  und Multi Split Systeme behandelt. Auch Einkanal  und Zweikanal Einheiten werden in der vorliegenden Europäischen Norm behandelt.
Die vorstehend aufgeführten Geräte können einen oder mehrere Primär- oder Sekundärfunktion(en) haben.
Diese Europäische Norm gilt für Geräte, die einer Typprüfung zu unterziehen sind. Anforderungen an nicht typgeprüfte Geräte sollten ein Thema für weitere Überlegungen sein.
Bei (aus mehreren Teilen bestehenden) Verpackungseinheiten gilt die vorliegende Europäische Norm nur, wenn diese Einheiten als vollständige Baugruppe ausgelegt und geliefert werden.
ANMERKUNG   Sämtliche in diesem Text angegebenen Symbole werden unabhängig von der jeweilig verwendeten Sprache angewendet.
1.2   Anwendungsbereich der prEN 16905 4
Dieser Teil der prEN 16905 legt die Prüfverfahren von gasbefeuerten endothermischen Motor-Geräten für den Heiz- und/oder Kühlbetrieb einschließlich der Wärmerückgewinnung des Motors fest.

Pompes à chaleur à moteur endothermique alimenté au gaz - Partie 4 : Méthodes d'essai

1.1   Domaine d'application de la série prEN 16905
La présente Norme européenne spécifie les exigences, les méthodes d'essai et les conditions d'essai applicables aux calculs des caractéristiques et des performances des climatiseurs et pompes à chaleur utilisant de l'air, de l'eau ou de l'eau glycolée comme fluide caloporteur, munis de compresseurs à moteur endothermique alimenté au gaz, et destinés à des applications de chauffage, de refroidissement et de réfrigération de locaux (ci-après désignés par l'appellation « appareils GEHP »).
Cette norme s'applique uniquement aux appareils dont le débit calorifique maximal (dérivé du pouvoir calorifique inférieur) ne dépasse pas 70 kW dans les conditions de performance nominale.
Elle se limite également aux appareils classés dans les catégories I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P et II2Er3P de l'EN 437.
Cette norme ne s'applique qu'aux appareils :
-   équipés de moteurs endothermiques alimentés au gaz régulés par des systèmes de régulation entièrement automatisés ;
-   comportant des circuits fermés de réfrigérant dans lesquels le réfrigérant n'entre pas en contact direct avec le fluide à refroidir ou à chauffer ;
-   dans lesquels la température du fluide caloporteur du système de chauffage (circuit d'eau de chauffage) ne dépasse pas 105 °C dans les conditions normales de fonctionnement ;
-   dans lesquels la pression maximale de fonctionnement :
-   ne dépasse pas 6 bar dans le circuit d'eau de chauffage (le cas échéant) ; et
-   ne dépasse pas 10 bar dans le circuit d'eau chaude sanitaire (le cas échéant).
Cette norme s'applique aux appareils utilisés uniquement pour le chauffage de locaux, le refroidissement de locaux ou la réfrigération, avec ou sans récupération de chaleur.
Elle ne couvre pas les appareils dont le condenseur est refroidi par air et par évaporation de l'eau d'un circuit supplémentaire externe.
Cette norme couvre les systèmes autonomes, mono-split et multi-split. Les installations à simple conduit et à double conduit entrent également dans son domaine d'application.
Les appareils ci-dessus peuvent assurer une ou plusieurs fonctions principales ou secondaires.
Cette norme s'applique aux appareils destinés à être soumis à des essais de type. Les exigences relatives aux appareils non soumis à des essais de type pourraient appeler des considérations supplémentaires.
Dans le cas des appareils autonomes (constitués de plusieurs éléments), la norme ne s'applique qu'aux appareils conçus et fournis sous forme d'ensemble complet.
NOTE   Il faut employer tous les symboles spécifiés dans le présent document, quelle que soit la langue utilisée.
1.2   Domaine d'application de la présente Partie 4 de la norme prEN 16905
La présente partie de la norme prEN 16905 spécifie les méthodes d'essai applicables aux pompes à chaleur à moteur à gaz utilisées dans les appareils à moteur endothermique alimenté au gaz en mode chauffage et/ou refroidissement, y compris la récupération de chaleur du moteur.

Toplotna črpalka s plinsko gnanim motorjem z notranjim zgorevanjem - 4. del: Preskusne metode

Ta evropski standard določa zahteve, preskusne metode in preskusne pogoje za ocenjevanje in izračun zmogljivosti klimatskih naprav in toplotnih črpalk, ki uporabljajo zrak, vodo ali slanico kot medij za prenos toplote, s kompresorji s plinsko gnanim motorjem z notranjim zgorevanjem, kadar se uporabljajo za segrevanje, ohlajanje in hlajenje, v nadaljevanju »naprava GEHP«.
Ta evropski standard se uporablja samo za naprave z največjo grelno močjo (na podlagi neto kalorične vrednosti), ki ne presega 70 kW pri standardnih pogojih za določanje moči.
Ta evropski standard se uporablja samo za naprave iz kategorij I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P in II2Er3P v skladu s standardom EN 437.
Ta evropski standard se uporablja samo za naprave:
– s plinsko gnanimi motorji z notranjim zgorevanjem, ki jih nadzirajo povsem samodejni krmilni sistemi;
– s hladilnimi tokokrogi z zaprtim sistemom, pri katerih hladilno sredstvo ne pride v neposreden stik s tekočino, ki se ohlaja ali segreva;
– pri katerih temperatura tekočine za prenos toplote ogrevalnega sistema (ogrevalno vodovodno omrežje) pri običajnem delovanju ne presega 105 °C;
– pri katerih najvišji obratovalni tlak v:
– ogrevalnem vodovodnem omrežju (če je nameščeno) ne presega 6 barov;
– gospodinjskem ogrevalnem vodovodnem omrežju (če je nameščeno) ne presega 10 barov.
Ta evropski standard se uporablja za naprave samo, če se uporablja za segrevanje, ohlajanje ali hlajenje prostora z rekuperacijo toplote ali brez nje.
Ta evropski standard ne zajema naprav, katerih kondenzator se hladi z zrakom in izhlapevanjem zunanje dodatne vode.
Ta evropski standard zajema pakirane enote in sisteme z enim ali več razcepi. Ta evropski standard zajema enote z enojnim in dvojnim vodom.
Zgornje naprave imajo lahko eno ali več primarnih ali sekundarnih funkcij.
Ta evropski standard se uporablja za vse naprave, za katere se izvaja tipski preskus. Zahteve za naprave, za katere se ne izvaja tipski preskus, bi bilo treba dodatno proučiti.
Pri pakiranih enotah (sestavljenih iz več kosov) se ta evropski standard uporablja samo za tiste, ki so projektirane in dostavljene kot celoten paket.
OPOMBA Vsi simboli v tem besedilu se uporabljajo ne glede na uporabljeni jezik.

General Information

Status
Published
Publication Date
07-Mar-2017
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
08-Mar-2017
Completion Date
08-Mar-2017

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SLOVENSKI STANDARD
SIST EN 16905-4:2018
01-januar-2018
7RSORWQDþUSDONDVSOLQVNRJQDQLPPRWRUMHP]QRWUDQMLP]JRUHYDQMHPGHO
3UHVNXVQHPHWRGH
Gas-fired endothermic engine driven heat pumps - Part 4: Test methods
Gasbefeuerte endothermische Motor-Wärmepumpen - Teil 4: Prüfverfahren
Pompes à chaleur à moteur endothermique alimenté au gaz - Partie 4 : Méthodes
d'essai
Ta slovenski standard je istoveten z: EN 16905-4:2017
ICS:
27.080 7RSORWQHþUSDONH Heat pumps
SIST EN 16905-4:2018 en,fr,de

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

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SIST EN 16905-4:2018
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SIST EN 16905-4:2018
EN 16905-4
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2017
EUROPÄISCHE NORM
ICS 27.080
English Version
Gas-fired endothermic engine driven heat pumps - Part 4:
Test methods

Pompes à chaleur à moteur endothermique alimenté Gasbefeuerte endothermische Motor-Wärmepumpen -

au gaz - Partie 4 : Méthodes d'essai Teil 4: Prüfverfahren
This European Standard was approved by CEN on 9 January 2017.

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: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16905-4:2017 E

worldwide for CEN national Members.
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SIST EN 16905-4:2018
EN 16905-4:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 5

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

1.1 Scope of EN 16905 series .............................................................................................................................. 6

1.2 Scope of EN 16905-4 ....................................................................................................................................... 6

2 Normative references .................................................................................................................................... 7

3 Terms and definitions ................................................................................................................................... 7

4 Test methods .................................................................................................................................................... 7

4.1 General ................................................................................................................................................................ 7

4.2 Basic principles method of calculation for the determination of capacities ............................. 7

4.2.1 Capacity............................................................................................................................................................... 7

4.2.2 Engine heat recovery capacity .................................................................................................................... 9

4.2.3 Heat input ....................................................................................................................................................... 11

4.2.4 Electrical power input ................................................................................................................................ 12

4.2.5 Gas utilization efficiency (GUE) ............................................................................................................... 16

4.2.6 Auxiliary energy factor (AEF) .................................................................................................................. 17

4.2.7 Engine heat recovery efficiency (EHRE) .............................................................................................. 18

4.2.8 Primary energy factor (PER) .................................................................................................................... 19

4.3 Test apparatus............................................................................................................................................... 19

4.3.1 Arrangement of the test apparatus........................................................................................................ 19

4.3.2 Installation and connection of the appliance ..................................................................................... 20

4.4 Uncertainties of measurement ................................................................................................................ 21

4.5 Test procedure .............................................................................................................................................. 23

4.5.1 General ............................................................................................................................................................. 23

4.5.2 Non-cyclical operation ............................................................................................................................... 26

4.5.3 Cyclical operation ........................................................................................................................................ 38

4.6 Test methods for electric power consumption during thermostat off mode, standby

mode and off mode ...................................................................................................................................... 42

4.6.1 Measurement of electrical power consumption during thermostat off mode ....................... 42

4.6.2 Measurement of the electrical power consumption during standby mode ............................ 42

4.6.3 Measurement of the electric power consumption during crankcase heater mode ............. 42

4.6.4 Measurement of the electric power consumption during off mode .......................................... 43

4.7 Test results — Data to be recorded ....................................................................................................... 43

5 Heat recovery test for air-cooled multisplit systems ...................................................................... 45

5.1 Test installation ............................................................................................................................................ 45

5.1.1 General ............................................................................................................................................................. 45

5.1.2 Three-room calorimeter method ........................................................................................................... 45

5.1.3 Three-room air-enthalpy method .......................................................................................................... 45

5.1.4 Two-room air-enthalpy method ............................................................................................................. 45

5.2 Test procedure .............................................................................................................................................. 46

5.3 Test results ..................................................................................................................................................... 46

6 Test report ...................................................................................................................................................... 46

6.1 General information .................................................................................................................................... 46

6.2 Additional information .............................................................................................................................. 47

6.3 Rating test results ........................................................................................................................................ 47

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SIST EN 16905-4:2018
EN 16905-4:2017 (E)

Annex A (normative) Calorimeter test method .............................................................................................. 48

A.1 General ............................................................................................................................................................. 48

A.2 Transient heating capacity test ............................................................................................................... 51

A.3 Calibrated room-type calorimeter ......................................................................................................... 51

A.4 Balanced ambient room-type calorimeter .......................................................................................... 52

A.5 Calorimeter and auxiliary equipment for water-cooled condenser tests ................................ 52

A.6 Calculations-cooling capacities ............................................................................................................... 52

A.7 Calculations- heating capacities .............................................................................................................. 54

A.7.1 General ............................................................................................................................................................. 54

Annex B (normative) Indoor air enthalpy test method ............................................................................... 57

B.1 General ............................................................................................................................................................. 57

B.2 Test conditions .............................................................................................................................................. 57

B.3 Application ...................................................................................................................................................... 57

B.4 Calculations-cooling capacities ............................................................................................................... 57

B.5 Calculations-heating capacities ............................................................................................................... 58

Annex C (normative) Symbols and units used in Annex A and B .............................................................. 59

Annex D (normative) Water enthalpy test method ....................................................................................... 61

D.1 General ............................................................................................................................................................. 61

D.2 Calculations..................................................................................................................................................... 61

D.2.1 Measured cooling capacity ........................................................................................................................ 61

D.2.2 Measured heating capacity........................................................................................................................ 61

D.2.3 Measured engine heat recovery capacity............................................................................................. 62

Annex E (normative) Direct method for air-to-water (brine) and water (brine)-to-water

(brine) appliances ........................................................................................................................................ 63

E.1 General ............................................................................................................................................................. 63

E.2 Compensation system for air-to-water (brine) appliances ........................................................... 63

E.3 Compensation system for water(brine) to water (brine) appliances ....................................... 64

Annex F (informative) Measurement control criteria for water (brine) to water (brine)

appliances........................................................................................................................................................ 65

F.1 General ............................................................................................................................................................. 65

F.2 Water (brine)-to-water (brine) heat pump in heating mode ....................................................... 65

F.3 Water (brine)-to-water (brine) chiller or chiller/heater in cooling mode ............................. 66

Annex G (normative) Determination of the pump efficiency ..................................................................... 68

G.1 General ............................................................................................................................................................. 68

G.2 Hydraulic power of the pump .................................................................................................................. 68

G.2.1 The pump is an integral part of the appliance ................................................................................... 68

G.2.2 The pump is not an integral part of the appliance............................................................................ 68

G.3 Efficiency of the pump ................................................................................................................................. 69

Annex H (informative) Calculation procedure for determination of GUE, AEF and Cd values ...... 71

H.1 Calculation procedure for determination of GUE values at part load (GUEPL)...................... 71

H.1.1 General ............................................................................................................................................................. 71

H.1.2 For air-to-air, brine-to-air and water-to-air units ............................................................................ 71

H.1.3 For air-to-water, water-to-water and brine-to-water units .......................................................... 72

H.2 Calculation procedure for determination of AEF values at part load (AEFPL) ....................... 72

H.2.1 General ............................................................................................................................................................. 72

H.2.2 For air-to-air, brine-to-air and water-to-air units ............................................................................ 73

H.2.3 For air-to-water, water-to-water and brine-to-water units .......................................................... 73

H.3 Air-to-air and water-to-air units - Determination of the degradation coefficient Cd .......... 74

H.3.1 General ............................................................................................................................................................. 74

H.3.2 Air-to-air units – Cooling mode................................................................................................................ 75

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SIST EN 16905-4:2018
EN 16905-4:2017 (E)

H.3.3 Air-to-air units – Heating mode .............................................................................................................. 75

H.3.4 Water-to-air units – Cooling mode ......................................................................................................... 75

H.3.5 Water-to-air units – Heating mode ........................................................................................................ 75

H.4 Air-to-water units and water-to-water units - Determination of the degradation

coefficient Cc .................................................................................................................................................. 75

Annex I (informative) “Individual” correction to include in the “global” electrical power

input correction depending on the GEHP appliance ....................................................................... 76

Annex J (informative) Heating capacity tests - Flow chart and examples of different test

sequences ........................................................................................................................................................ 83

J.1 Flow chart ....................................................................................................................................................... 83

J.2 Examples of test profiles ........................................................................................................................... 84

Annex K (informative) Rating of indoor and outdoor units of multisplit and modular heat

recovery multisplit system ....................................................................................................................... 89

K.1 General ............................................................................................................................................................. 89

K.2 Terms and definitions ................................................................................................................................ 89

K.3 Rating in indoor units ................................................................................................................................. 89

K.3.1 General ............................................................................................................................................................. 89

K.3.2 Air flow rate measurement ....................................................................................................................... 90

K.3.3 Measurement of the power input of indoor units ............................................................................ 90

K.4 Rating of outdoor units .............................................................................................................................. 90

K.4.1 General ............................................................................................................................................................. 90

K.4.2 Test conditions .............................................................................................................................................. 90

K.4.3 Test procedure .............................................................................................................................................. 90

Annex L (informative) Air flow measurement ................................................................................................ 91

L.1 General ............................................................................................................................................................. 91

L.2 Test installation ............................................................................................................................................ 91

L.3 Test conditions .............................................................................................................................................. 91

L.4 Air flow measurement ................................................................................................................................ 91

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

requirements of Commission Regulation (EU) No 813/2013 aimed to be covered ............. 92

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

labelling requirements of Commission Delegated Regulation (EU) No 811/2013

aimed to be covered .................................................................................................................................... 93

Bibliography ................................................................................................................................................................. 95

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SIST EN 16905-4:2018
EN 16905-4:2017 (E)
European foreword

This document (EN 16905-4:2017) has been prepared by Technical Committee CEN/TC 299 “Gas-fired

sorption appliances, indirect fired sorption appliances, gas-fired endothermic engine heat pumps and

domestic gas-fired washing and drying appliances”, the secretariat of which is held by UNI.

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 September 2017, and conflicting national standards

shall be withdrawn at the latest by September 2017.

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 and Annex ZB, which is an integral part

of this document.

This standard comprises the following parts under the general title, Gas-fired endothermic engine driven

heat pumps:
— Part 1: Terms and definitions;
— Part 2: Safety (WI 00299025; currently in preparation);
— Part 3: Test conditions;
— Part 4: Test methods;
— Part 5: Calculation of seasonal performances in heating and cooling mode.

EN 16905-1, prEN 16905-2, EN 16905-3, EN 16905-4 and EN 16905-5 have been prepared to address

the essential requirements of the European Directive 2009/142/EC relating to appliances burning

gaseous fuels (see prEN 16905-2:201X, Annex ZA for safety aspects and EN 16905-5:2017, Annex ZA for

rational use of energy aspects).

These documents are linked to the Energy Related Products Directive (2009/125/EC) in terms of tests

conditions, tests methods and seasonal performances calculation methods under Mandate M/535;

(see EN 16905-3:2017, Annex ZA, EN 16905-4:2017, Annex ZA, EN 16905-5:2017, Annex ZA and

prEN 16905-2:201X, Annex ZB).
These documents will be reviewed whenever new mandates could apply.

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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SIST EN 16905-4:2018
EN 16905-4:2017 (E)
1 Scope
1.1 Scope of EN 16905 series

This European Standard specifies the requirements, test methods and test conditions for the rating and

performance calculation of air conditioners and heat pumps using either air, water or brine as heat

transfer media, with gas-fired endothermic engine driven compressors when used for space heating,

cooling and refrigeration, hereafter referred to as “GEHP appliance”.

This European Standard only applies to appliances with a maximum heat input (based on net calorific

value) not exceeding 70 kW at standard rating conditions.

This European Standard only applies to appliances under categories I , I , I , I , I , I , I , I ,

2H 2E 2Er 2R 2E(S)B 2L 2LL 2ELL
I , I , I , I , I , I II +, II +, II , II , II , II , II , II , II and II

2E(R)B 2ESi 2E(R) 3P 3B 3B/P, 2H3 2Er3 2H3B/P 2L3B/P 2E3B/P 2ELL3B/P 2L3P 2H3P 2E3P 2Er3P

according to EN 437.
This European Standard only applies to appliances having:

a) gas fired endothermic engines under the control of fully automatic control systems;

b) closed system refrigerant circuits in which the refrigerant does not come into direct contact with

the fluid to be cooled or heated;

c) where the temperature of the heat transfer fluid of the heating system (heating water circuit) does

not exceed 105 °C during normal operation;
d) where the maximum operating pressure in the:
1) heating water circuit (if installed) does not exceed 6 bar;
2) domestic hot water circuit (if installed) does not exceed 10 bar.

This European Standard applies to appliances only when used for space heating or space cooling or for

refrigeration, with or without heat recovery.

The appliances having their condenser cooled by air and by the evaporation of external additional

water are not covered by this European Standard.

Packaged units, single split and multisplit systems are covered by this European Standard. Single duct

and double duct units are covered by this European Standard.
The above appliances can have one or more primary or secondary functions.

This European Standard is applicable to appliances that are intended to be type tested. Requirements

for appliances that are not type tested would need to be subject to further consideration.

In the case of packaged units (consisting of several parts), this European Standard applies only to those

designed and supplied as a complete package.

NOTE All the symbols given in this text are used regardless of the language used.

1.2 Scope of EN 16905-4

This part of the EN 16905 series specifies the test methods for gas-fired endothermic engine driven

heat pumps for heating and/or cooling mode including the engine heat recovery.
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SIST EN 16905-4:2018
EN 16905-4:2017 (E)
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

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

EN 437, Test gases — Test pressures — Appliance categories

EN 12102, Air conditioners, liquid chilling packages, heat pumps and dehumidifiers with electrically

driven compressors for space heating and cooling - Measurement of airborne noise - Determination of the

sound power level

EN 16905-1, Gas-fired endothermic engine driven heat pumps — Part 1: Terms and definitions

prEN 16905-2 , Gas-fired endothermic engine driven heat pumps — Part 2: Safety

EN 16905-3:2017, Gas-fired endothermic engine driven heat pumps — Part 3: Test conditions

3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 16905-1 apply.

4 Test methods
4.1 General

A steady-state or transient or cyclical operation test could be applied for 100 % load tests or for

reduced load tests.

The sound power level is measured in the standard rating conditions as given in EN 16905-3 with the

corresponding test methods according to EN 12102 considering that this standard, dedicated to

determination of the sound power level could be used with appliances covered in the scope of the

EN 16905 series.
4.2 Basic principles method of calculation for the determination of capacities
4.2.1 Capacity
4.2.1.1 Measured capacity

The measured heating or cooling capacity of air-to-air or water (brine)-to-air GEHP shall be determined

by measurements in a calorimeter room (see Annex A) or by the air enthalpy method (see Annex B).

The measured heating or cooling capacity of air-to-water (brine) or water (brine)-to-water (brine)

GEHP shall be determined in accordance with the water enthalpy method (see Annex D).

The measured heat recovery capacity of all GEHP shall be determined in accordance with the water

enthalpy method (see Annex D).
1) Currently in preparation.
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SIST EN 16905-4:2018
EN 16905-4:2017 (E)
4.2.1.2 Effective capacity
4.2.1.2.1 Effective heating capacity

The effective heating capacity is the measured heating capacity corrected for the heat from the device

(pump(s) or fan(s)) responsible for circulating the heat transfer medium through the indoor heat

exchanger:
a) if the fan(s) or pump(s) is (are) an integral pa
...

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