Gas-fired endothermic engine driven heat pumps - Part 3: Test conditions

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 3
This part of the FprEN 16905 series specifies the test conditions for the rating of energy parameters of gas-fired endothermic engine driven heat pumps for heating and/or cooling mode including the engine heat recovery.

Gasbefeuerte endothermische Motor-Wärmepumpen - Teil 3: Prüfbedingungen

1.1   Anwendungsbereich der Normenreihe 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.

Pompes à chaleur à moteur endothermique alimenté au gaz - Partie 3 : Conditions 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 3 de la norme prEN 16905
La présente partie de la norme prEN 16905 spécifie les conditions d'essai applicables à l'évaluation des paramètres énergétiques des appareils à moteur endothermique alimenté au gaz utilisés en mode chauffage et/ou refroidissement, y compris la récupération de chaleur du moteur.

Toplotna črpalka s plinsko gnanim motorjem z notranjim zgorevanjem - 3. del: Preskusni pogoji

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 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
9020 - Submission to 2 Year Review Enquiry - Review Enquiry
Due Date
15-Apr-2022
Completion Date
15-Apr-2022

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Gasbefeuerte endothermische Motor-Wärmepumpen - Teil 3: PrüfbedingungenPompes à chaleur à moteur endothermique alimenté au gaz - Partie 3 : Conditions d'essaiGas-fired endothermic engine driven heat pumps - Part 3: Test conditions27.080Heat pumpsICS:Ta slovenski standard je istoveten z:EN 16905-3:2017SIST EN 16905-3:2018en,fr,de01-januar-2018SIST EN 16905-3:2018SLOVENSKI

STANDARD
SIST EN 16905-3:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16905-3
March
t r s y ICS
t yä r z r English Version
Gasæfired endothermic engine driven heat pumps æ Part

uã Test conditions Pompes à chaleur à moteur endothermique alimenté au gaz æ Partie

u ã Conditions d 5essai
Gasbefeuerte endothermische MotoræWärmepumpen æ Teil
uã Prüfbedingungen This European Standard was approved by CEN on
{ January
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egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels

t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s x { r wæ uã t r s y ESIST EN 16905-3:2018

EN 16905-3:2017 (E) 2 Contents Page European foreword ....................................................................................................................................................... 3 1 Scope .................................................................................................................................................................... 4 1.1 Scope of EN 16905 series .............................................................................................................................. 4 1.2 Scope of EN 16905-3 ....................................................................................................................................... 4 2 Normative references .................................................................................................................................... 5 3 Terms and definitions ................................................................................................................................... 5 4 Test conditions ................................................................................................................................................. 5 4.1 Environmental conditions and electrical power supply requirements ...................................... 5 4.2 Rating conditions in cooling and in heating .......................................................................................... 6 4.3 Rating conditions for engine heat recovery ....................................................................................... 15 Annex ZA (informative)

Relationship between this European Standard and the ecodesign requirements of Commission Regulation (EU) No 813/2013 aimed to be covered ............. 16 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 .................................................................................................................................... 18 Bibliography ................................................................................................................................................................. 20

SIST EN 16905-3:2018

EN 16905-3:2017 (E) 3 European foreword This document (EN 16905-3:2017) 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 are integral parts 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 (currently being voted). 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. SIST EN 16905-3:2018

EN 16905-3:2017 (E) 4 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 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 EN 16905-3 This part of the EN 16905 series specifies the test conditions for the rating of energy parameters of gas-fired endothermic engine driven heat pumps for heating and/or cooling mode including the engine heat recovery. SIST EN 16905-3:2018

EN 16905-3:2017 (E) 5 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 16905-1, Gas-fired endothermic engine driven heat pumps — Part 1: Terms and definitions EN 16905-4:2017, Gas-fired endothermic engine driven heat pumps — Part 4: Test methods 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 16905-1 apply. 4 Test conditions 4.1 Environmental conditions and electrical power supply requirements The tests shall be carried out under the environmental conditions specified in Table 1 or Table 2 depending on the location of the unit. For all units, electrical power voltage and frequency shall be stated in the instructions. Table 1 — Environmental conditions and electrical power supply requirements for units designed for installation indoors Type Measured quantities Rating test Water-to-water and brine-to-water units a Dry bulb temperature 15 °C to 30 °C Water-to-air and brine-to-air units with duct connection on the air inlet and outlet side Dry bulb temperature 15 °C to 30 °C Water-to-air and brine-to-air units without duct connection on the air inlet side Dry bulb temperature Wet bulb temperature Inlet temperature (see Table 6 and Table 7) Air-to-water units with duct connection on the air inlet and outlet side Dry bulb temperature 15 °C to 30 °C Air-to-water units without duct connection on the air inlet side Dry bulb temperature Wet bulb temperature Inlet temperature (see Tables 12 to 15) Air-to-air units with duct connection on the outdoor air inlet and outlet side Dry bulb temperature 15 °C to 30 °C Air-to-air units without duct connection on the outdoor air inlet and outlet side Dry bulb temperature Wet bulb temperature As inlet temperature see Table 3 and Table 4 All appliances Voltage Rated voltage All appliances Frequency Rated frequency a Rating conditions for water to water or water to brine appliances can be extended to brine to water and brine to brine appliances respectively (e.g. for reversible applications). SIST EN 16905-3:2018

EN 16905-3:2017 (E) 6 Table 2 — Environmental conditions and electrical power supply requirements for units designed for installation outdoors Type Measured quantities Rating test Air-to-water units Dry bulb temperature Wet bulb temperature Inlet temperature (see Tables 12 to 14 and Table 15) Water-to-air units Dry bulb temperature Wet bulb temperature Inlet temperature (see Table 6 and Table 7) Water-to-water and brine-to-water operating in cooling mode a Dry bulb temperature 15 °C to 30 °C Water-to-water and brine-to-water operating in heating mode Dry bulb temperature 0 °C to 7 °C Air-to-air units with duct connection on the indoor air inlet and outlet side Dry bulb temperature Wet bulb temperature Inlet temperature (see Table 3 and Table 4) All appliances Voltage Rated voltage All appliances Frequency Rated frequency a Rating conditions for water to water or water to brine appliances can be extended to brine to water and brine to brine appliances respectively (e.g. for reversible applications). 4.2 Rating conditions in cooling and in heating For the rating tests, the appropriate test conditions shall be applied in accordance with: — Table 3 for air-to-air units and air-cooled multisplit systems in heating mode; — Table 4 for air-to-air units and air-cooled multisplit systems in cooling mode; — Table 5 for air-to-air simultaneous heating and cooling mode multisplit systems; — Table 6 for water-to-air, brine-to-air units and water-cooled multisplit systems in heating mode; — Table 7 for water-to-air, brine-to-air units and water-cooled multisplit systems in cooling mode; — Tables 8 to 10 for water-to-water and brine-to-water units in heating mode, depending on the temperature applications; — Table 11 for water-to-water, brine-to-water, water-to-brine and brine-to-brine units in cooling mode; — Tables 12 to 14 for air-to-water units in heating mode, depending on the temperature applications; — Table 15 for air-to-water and air-to-brine units in cooling mode. For units with brine, the test shall be carried out with the brine specified in the instruction, see EN 16905-4:2017, 4.5.1.6. NOTE 1 For air-to-water, brine-to-water and water-to-water units, the instructions declare the water temperatures levels (lower, medium, high) applicable to the heating mode. SIST EN 16905-3:2018

EN 16905-3:2017 (E) 7 NOTE 2 For comparison purposes between reverse cycle and non reverse cycle units, the conditions on the water side are given by the inlet and outlet water temperatures, possibly leading to different water flow rates in heating and cooling modes. Table 3 — Air-to-air units and air-cooled multisplit systems - Heating mode

Outdoor heat exchanger Indoor heat exchanger

Inlet dry bulb temperature °C Inlet wet bulb temperature °C Inlet dry bulb temperature °C Inlet wet bulb temperature °C Standard rating conditions Outdoor air / recycled air (split units and air-cooled multisplit systems) 7 6 20 15 max Exhaust air / recycled air (e.g. single duct heat pump) 20 12 20 12 Exhaust air / outdoor air 20 12 7 6 Application rating conditions Outdoor air / recycled air (split units and air-cooled multisplit systems) 2 1 20 15 max. Outdoor air / recycled air (split units and air-cooled multisplit system) 7 8 20 15 max. Outdoor air / recycled air (split units and air-cooled multisplit system) 15 - 20 1 5 max. Outdoor air / recycled air (split units and air-cooled multisplit system) 12 11 20 15 max. Exhaust air / outdoor air 20 12 2 1 Exhaust air /outdoor air 20 12 7 8 SIST EN 16905-3:2018

EN 16905-3:2017 (E) 8 Table 4 — Air-to-air units and air-cooled multisplit systems - Cooling mode

Outdoor heat exchanger Indoor heat exchanger

Inlet dry bulb temperature °C Inlet wet bulb temperature °C Inlet dry bulb temperature °C Inlet wet bulb temperature °C Standard rating conditions Comfort (outdoor air / recycled air) (split units) and air-cooled multisplit systems 35 24 a 27 19 Comfort (outdoor air / recycled air) (split units) and air-cooled multisplit systems 27 19 27 19 Comfort (exhaust air / outdoor air) 27 19 35 24 Single duct b, c 35 24 35 24 Control cabinet 35 24 35 24 Close control 35 24 24 17 Application rating conditions Comfort (outdoor air / recycled air) (split units and air-cooled multisplit systems) 27 19 a 21 15 Single duct b, c 27 19 27 19 Comfort (outdoor air / recycled air) (split units and air-cooled multisplit systems 46 24 a 29 19 Contro

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