Daikin RKXYQ5T7Y1B Operation manuals

Installation and operation

manual

VRV IV compressor unit for indoor installation

RKXYQ5T7Y1B

Installation and operation manual

VRV IV compressor unit for indoor installation

English

Direktive z vsemi spremembami.

<A>

<B>

<C>

TÜV (NB1856)

12080901.T30

DAIKIN.TCF.030A17/06-2015

Direktiivid koos muudatustega.

Директиви, с техните изменения.

Direktyvose su papildymais.

Direktīvās un to papildinājumos.

Smernice, v platnom znení.

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Direktiver, med senere ændringer.

Direktiv, med företagna ändringar.

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deklaruje na własną i wyłączną odpowiedzialność, że modele klimatyzatorów, których dotyczy niniejsza deklaracja:

declară pe proprie răspundere că aparatele de aer condiţionat la care se referă această declaraţie:

z vso odgovornostjo izjavlja, da so modeli klimatskih naprav, na katere se izjava nanaša:

kinnitab oma täielikul vastutusel, et käesoleva deklaratsiooni alla kuuluvad kliimaseadmete mudelid:

декларира на своя отговорност, че моделите климатична инсталация, за които се отнася тази декларация:

visiška savo atsakomybe skelbia, kad oro kondicionavimo prietaisų modeliai, kuriems yra taikoma ši deklaracija:

ar pilnu atbildību apliecina, ka tālāk uzskaitīto modeļu gaisa kondicionētāji, uz kuriem attiecas šī deklarācija:

vyhlasuje na vlastnú zodpovednosť, že tieto klimatizačné modely, na ktoré sa vzťahuje toto vyhlásenie:

tamamen kendi sorumluluǧunda olmak üzere bu bildirinin ilgili olduǧu klima modellerinin aşaǧıdaki gibi olduǧunu beyan eder:

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megfelelnek az alábbi szabvány(ok)nak vagy egyéb irányadó dokumentum(ok)nak, ha azokat előírás szerint használják:

spełniają wymogi następujących norm i innych dokumentów normalizacyjnych, pod warunkiem że używane są zgodnie z naszymi instrukcjami:

sunt în conformitate cu următorul (următoarele) standard(e) sau alt(e) document(e) normativ(e), cu condiţia ca acestea să fie utilizate în conformitate cu

instrucţiunile noastre:

skladni z naslednjimi standardi in drugimi normativi, pod pogojem, da se uporabljajo v skladu z našimi navodili:

on vastavuses järgmis(t)e standardi(te)ga või teiste normatiivsete dokumentidega, kui neid kasutatakse vastavalt meie juhenditele:

съответстват на следните стандарти или други нормативни документи, при условие, че се използват съгласно нашите инструкции:

atitinka žemiau nurodytus standartus ir (arba) kitus norminius dokumentus su sąlyga, kad yra naudojami pagal mūsų nurodymus:

tad, ja lietoti atbilstoši ražotāja norādījumiem, atbilst sekojošiem standartiem un citiem normatīviem dokumentiem:

sú v zhode s nasledovnou(ými) normou(ami) alebo iným(i) normatívnym(i) dokumentom(ami), za predpokladu, že sa používajú v súlade snašim

návodom:

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ürünün, talimatlarımıza göre kullanılması koşuluyla aşağıdaki standartlar ve norm belirten belgelerle uyumludur:

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Directives, as amended.

Direktiven, gemäß Änderung.

010203040506070809

Deǧiştirilmiş halleriyle Yönetmelikler.

Direktiver, med foretatte endringer.

Direktiivejä, sellaisina kuin ne ovat muutettuina.

v platném znění.

Smjernice, kako je izmijenjeno.

irányelv(ek) és módosításaik rendelkezéseit.

z późniejszymi poprawkami.

Directivelor, cu amendamentele respective.

както е изложено в <A> и оценено положително от <B>

съгласно Сертификата<C>.

21Забележка*

Directives, telles que modifiées.

Richtlijnen, zoals geamendeerd.

Directivas, según lo enmendado.

Direttive, come da modifica.

Οδηγιών, όπως έχουν τροποποιηθεί.

Directivas, conforme alteração em.

Директив со всеми поправками.

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a(z) <A> alapján, a(z) <B> igazolta a megfelelést, a(z)

<C>tanúsítvány szerint.

kaip nustatyta <A> ir kaip teigiamai nuspręsta <B> pagal

Sertifikatą<C>.

kā norādīts <A> un atbilstoši <B> pozitīvajam vērtējumam

saskaņā ar sertifikātu<C>.

ako bolo uvedené v <A> a pozitívne zistené <B> vsúlade

s osvedčením<C>.

<A>’da belirtildiği gibi ve <C>Sertifikasına göre <B>

tarafından olumlu olarak değerlendirildiği gibi.

22Pastaba*

23Piezīmes*

24Poznámka*

25Not*

zgodnie z dokumentacją <A>, pozytywną

opinią <B> i Świadectwem<C>.

aşa cum este stabilit în <A> şi apreciat pozitiv de<B>

în conformitate cu Certificatul<C>.

kot je določeno v <A> in odobreno s strani <B>

vskladu scertifikatom<C>.

nagu on näidatud dokumendis <A> ja heaks kiidetud

<B> järgi vastavalt sertifikaadile<C>.

Daikin Europe N.V. je pooblaščen za sestavo datoteke s tehnično mapo.

Daikin Europe N.V. on volitatud koostama tehnilist dokumentatsiooni.

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Daikin Europe N.V. Teknik Yapı Dosyasını derlemeye yetkilidir.

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Daikin Europe N.V. on valtuutettu laatimaan Teknisen asiakirjan.

Společnost Daikin Europe N.V. má oprávnění ke kompilaci souboru technické konstrukce.

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16Megjegyzés*

17Uwaga*

18Notă*

19Opomba*

20Märkus*

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Machinery 2006/42/EC

enligt <A> och godkänts av <B> enligt

Certifikatet<C>.

som det fremkommer i <A> og gjennom positiv

bedømmelse av <B> ifølge Sertifikat<C>.

jotka on esitetty asiakirjassa <A> ja jotka <B>

on hyväksynyt Sertifikaatin<C> mukaisesti.

jak bylo uvedeno v <A> a pozitivně zjištěno

<B> vsouladu sosvědčením<C>.

kako je izloženo u <A> i pozitivno ocijenjeno odstrane

<B> prema Certifikatu<C>.

Electromagnetic Compatibility 2004/108/EC

заявляет, исключительно под свою ответственность, что модели кондиционеров воздуха, к которым относится настоящее заявление:

erklærer under eneansvar, at klimaanlægmodellerne, som denne deklaration vedrører:

deklarerar i egenskap av huvudansvarig, att luftkonditioneringsmodellerna som berörs av denna deklaration innebär att:

erklærer et fullstendig ansvar for at de luftkondisjoneringsmodeller som berøres av denne deklarasjon, innebærer at:

ilmoittaa yksinomaan omalla vastuullaan, että tämän ilmoituksen tarkoittamat ilmastointilaitteiden mallit:

prohlašuje ve své plné odpovědnosti, že modely klimatizace, k nimž se toto prohlášení vztahuje:

izjavljuje pod isključivo vlastitom odgovornošću da su modeli klima uređaja na koje se ova izjava odnosi:

teljes felelőssége tudatában kijelenti, hogy a klímaberendezés modellek, melyekre e nyilatkozat vonatkozik:

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estão em conformidade com a(s) seguinte(s) norma(s) ou outro(s) documento(s) normativo(s), desde que estes sejam utilizados de

acordo com as nossas instruções:

соответствуют следующим стандартам или другим нормативным документам, при условии их использования согласно нашим инструкциям:

overholder følgende standard(er) eller andet/andre retningsgivende dokument(er), forudsat at disse anvendes i henhold til vore instrukser:

respektive utrustning är utförd i överensstämmelse med och följer följande standard(er) eller andra normgivande dokument, under förutsättning att

användning sker i överensstämmelse med våra instruktioner:

respektive utstyr er i overensstemmelse med følgende standard(er) eller andre normgivende dokument(er), under forutssetning av at disse brukes i

henhold til våre instrukser:

vastaavat seuraavien standardien ja muiden ohjeellisten dokumenttien vaatimuksia edellyttäen, että niitä käytetään ohjeidemme mukaisesti:

za předpokladu, že jsou využívány v souladu s našimi pokyny, odpovídají následujícím normám nebo normativním dokumentům:

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u skladu sa slijedećim standardom(ima) ili drugim normativnim dokumentom(ima), uz uvjet da se oni koriste u skladu s našim uputama:

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ob upoštevanju določb:

vastavalt nõuetele:

следвайки клаузите на:

laikantis nuostatų, pateikiamų:

ievērojot prasības, kas noteiktas:

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održiavajúc ustanovenia:

11Information*

12Merk*

13Huom*

14Poznámka*

15Napomena*

bunun koşullarına uygun olarak:

delineato nel <A> e giudicato positivamente da<B>

secondo il Certificato<C>.

όπως καθορίζεται στο <A> και κρίνεται θετικά

από το <B> σύμφωνα με το Πιστοποιητικό<C>.

tal como estabelecido em <A> e com o parecer positivo

de <B> de acordo com o Certificado<C>.

как указано в <A> и в соответствии сположительным

решением <B> согласно Свидетельству<C>.

som anført i <A> og positivt vurderet af <B> ihenhold til

Η Daikin Europe N.V. είναι εξουσιοδοτημένη να συντάξει τον Τεχνικό φάκελο κατασκευής.

A Daikin Europe N.V. está autorizada a compilar a documentação técnica de fabrico.

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Certifikat<C>.

Daikin Europe N.V. je ovlašten za izradu Datoteke o tehničkoj konstrukciji.

A Daikin Europe N.V. jogosult a műszaki konstrukciós dokumentáció összeállítására.

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Daikin Europe N.V. este autorizat să compileze Dosarul tehnic de construcţie.

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Shigeki Morita

Director

Ostend, 1st of September, 2015

Компания Daikin Europe N.V. уполномочена составить Комплект технической документации.

Daikin Europe N.V. er autoriseret til at udarbejde de tekniske konstruktionsdata.

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Daikin Europe N.V. har tillatelse til å kompilere den Tekniske konstruksjonsfilen.

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declares under its sole responsibility that the air conditioning models to which this declaration relates:

CE - DECLARATION-OF-CONFORMITY CE - DECLARACION-DE-CONFORMIDAD CE - DECLARAÇÃO-DE-CONFORMIDADE CE - ERKLÆRING OM-SAMSVAR CE - IZJAVA-O-USKLAĐENOSTI CE - IZJAVA O SKLADNOSTI CE - ATITIKTIES-DEKLARACIJA

CE - KONFORMITÄTSERKLÄRUNG CE - DICHIARAZIONE-DI-CONFORMITA CE - ЗАЯВЛЕНИЕ-О-СООТВЕТСТВИИ CE - ILMOITUS-YHDENMUKAISUUDESTA CE - MEGFELELŐSÉGI-NYILATKOZAT CE - VASTAVUSDEKLARATSIOON CE - ATBILSTĪBAS-DEKLARĀCIJA

CE - DECLARATION-DE-CONFORMITE CE - ΔHΛΩΣΗ ΣΥΜΜΟΡΦΩΣΗΣ CE - OVERENSSTEMMELSESERKLÆRING CE - PROHLÁŠENÍ-O-SHODĚ CE - DEKLARACJA-ZGODNOŚCI CE - ДЕКЛАРАЦИЯ-ЗА-СЪОТВЕТСТВИЕ CE - VYHLÁSENIE-ZHODY

CE - CONFORMITEITSVERKLARING CE - FÖRSÄKRAN-OM-ÖVERENSTÄMMELSE CE - DECLARAŢIE-DE-CONFORMITATE CE - UYGUNLUK-BEYANI

erklärt auf seine alleinige Verantwortung daß die Modelle der Klimageräte für die diese Erklärung bestimmt ist:

Daikin Europe N.V.

01

02

06Nota*

07Σημείωση*

08Nota*

09Примечание*

under iagttagelse af bestemmelserne i:

enligt villkoren i:

gitt i henhold til bestemmelsene i:

noudattaen määräyksiä:

za dodržení ustanovení předpisu:

prema odredbama:

követi a(z):

zgodnie z postanowieniami Dyrektyw:

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déclare sous sa seule responsabilité que les appareils d'air conditionné visés par la présente déclaration:

verklaart hierbij op eigen exclusieve verantwoordelijkheid dat de airconditioning units waarop deze verklaring betrekking heeft:

declara baja su única responsabilidad que los modelos de aire acondicionado a los cuales hace referencia la declaración:

dichiara sotto sua responsabilità che i condizionatori modello a cui è riferita questa dichiarazione:

δηλώνει με αποκλειστική της ευθύνη ότι τα μοντέλα των κλιματιστικών συσκευών στα οποία αναφέρεται η παρούσα δήλωση:

declara sob sua exclusiva responsabilidade que os modelos de ar condicionado a que esta declaração se refere:

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RDXYQ5T7V1B*,

RKXYQ5T7Y1B*,

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are in conformity with the following standard(s) or other normative document(s), provided that these are used in accordance with our instructions:

der/den folgenden Norm(en) oder einem anderen Normdokument oder -dokumenten entspricht/entsprechen, unter der Voraussetzung, daß sie gemäß

unseren Anweisungen eingesetzt werden:

sont conformes à la/aux norme(s) ou autre(s) document(s) normatif(s), pour autant qu'ils soient utilisés conformément à nos instructions:

conform de volgende norm(en) of één of meer andere bindende documenten zijn, op voorwaarde dat ze worden gebruikt overeenkomstig onze

instructies:

están en conformidad con la(s) siguiente(s) norma(s) u otro(s) documento(s) normativo(s), siempre que sean utilizados de acuerdo con nuestras

instrucciones:

sono conformi al(i) seguente(i) standard(s) o altro(i) documento(i) a carattere normativo, a patto che vengano usati in conformità alle nostre istruzioni:

είναι σύμφωνα με το(α) ακόλουθο(α) πρότυπο(α) ή άλλο έγγραφο(α) κανονισμών, υπό την προϋπόθεση ότι χρησιμοποιούνται

σύμφωνα με τις οδηγίες μας:

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following the provisions of:

gemäß den Vorschriften der:

conformément aux stipulations des:

EN60335-2-40,

overeenkomstig de bepalingen van:

010203040506070809

în urma prevederilor:

as set out in <A> and judged positively by <B>

according to the Certificate<C>.

wie in <A> aufgeführt und von <B> positiv

beurteilt gemäß Zertifikat<C>.

tel que défini dans <A> et évalué positivement par <B>

conformément au Certificat<C>.

zoals vermeld in <A> en positief beoordeeld door <B>

siguiendo las disposiciones de:

secondo le prescrizioni per:

με τήρηση των διατάξεων των:

de acordo com o previsto em:

в соответствии с положениями:

01Note*

02Hinweis*

03Remarque*

04Bemerk*

overeenkomstig Certificaat<C>.

10Bemærk*

como se establece en <A> y es valorado

positivamente por <B> de acuerdo con el

Certificado<C>.

Daikin Europe N.V. is authorised to compile the Technical Construction File.

Daikin Europe N.V. hat die Berechtigung die Technische Konstruktionsakte zusammenzustellen.

Daikin Europe N.V. est autorisé à compiler le Dossier de Construction Technique.

Daikin Europe N.V. is bevoegd om het Technisch Constructiedossier samen te stellen.

Daikin Europe N.V. está autorizado a compilar el Archivo de Construcción Técnica.

05Nota*

01**

Daikin Europe N.V. è autorizzata a redigere il File Tecnico di Costruzione.

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3P397286-2B

Table of Contents

Table of Contents

1 About the documentation 4

1.1 About this document.................................................................. 4

For the installer 4

2 About the box 4

2.1 Compressor unit ........................................................................ 4

2.1.1 To remove the accessories from the compressor unit 4

2.1.2 To remove the transportation stay .............................. 4

3 About the units and options 5

3.1 About the compressor unit and heat exchanger unit................. 5

3.2 System layout............................................................................ 5

4 Preparation 5

4.1 Preparing installation site .......................................................... 5

4.1.1 Installation site requirements of the compressor unit.. 5

4.2 Preparing refrigerant piping....................................................... 5

4.2.1 Refrigerant piping requirements.................................. 5

4.2.2 Refrigerant piping material.......................................... 5

4.2.3 To select the piping size ............................................. 6

4.2.4 To select refrigerant branch kits.................................. 6

4.3 Preparing electrical wiring ......................................................... 6

4.3.1 Safety device requirements ........................................ 6

5 Installation 7

5.1 Opening the units ...................................................................... 7

5.1.1 To open the compressor unit ...................................... 7

5.2 Mounting the compressor unit ................................................... 7

5.2.1 Guidelines when installing the compressor unit.......... 7

5.3 Connecting the refrigerant piping .............................................. 7

5.3.1 Using the stop valve and service port......................... 7

5.3.2 To remove the pinched pipes...................................... 8

5.3.3 To connect the refrigerant piping to the compressor

unit .............................................................................. 9

5.4 Checking the refrigerant piping ................................................. 10

5.4.1 About checking the refrigerant piping ......................... 10

5.4.2 Checking refrigerant piping: General guidelines......... 10

5.4.3 Checking refrigerant piping: Setup.............................. 10

5.4.4 To perform a leak test................................................. 11

5.4.5 To perform vacuum drying.......................................... 11

5.5 To insulate the refrigerant piping............................................... 11

5.6 Charging refrigerant .................................................................. 11

5.6.1 Precautions when charging refrigerant ....................... 11

5.6.2 To determine the additional refrigerant amount.......... 12

5.6.3 To charge refrigerant .................................................. 12

5.6.4 Error codes when charging refrigerant........................ 13

5.6.5 To fix the fluorinated greenhouse gases label ............ 13

5.7 Connecting the electrical wiring................................................. 13

5.7.1 Field wiring: Overview................................................. 13

5.7.2 Guidelines when connecting the electrical wiring ....... 14

5.7.3 To connect the electrical wiring on the compressor

unit .............................................................................. 14

5.8 Finishing the compressor unit installation ................................. 15

5.8.1 To finish the transmission wiring................................. 15

6 Configuration 15

6.1 Making field settings.................................................................. 15

6.1.1 About making field settings......................................... 15

6.1.2 To access the field setting components...................... 15

6.1.3 Field setting components............................................ 15

6.1.4 To access mode 1 or 2 ............................................... 16

6.1.5 To use mode 1 (and default situation) ........................ 16

6.1.6 To use mode 2............................................................ 17

6.1.7 Mode 1 (and default situation): Monitoring settings .... 17

6.1.8 Mode 2: Field settings.................................................. 18

6.1.9 To connect the PC configurator to the compressor

unit ............................................................................... 20

7 Commissioning 20

7.1 Precautions when commissioning .............................................. 20

7.2 Checklist before commissioning................................................. 20

7.3 Checklist during commissioning ................................................. 21

7.3.1 About test run............................................................... 21

7.3.2 To perform a test run (7-LEDs display)........................ 21

7.3.3 Correcting after abnormal completion of the test run... 22

7.3.4 Operating the unit ........................................................ 22

8 Troubleshooting 22

8.1 Solving problems based on error codes..................................... 22

8.1.1 Error codes: Overview ................................................. 22

9 Technical data 24

9.1 Piping diagram: Compressor unit and heat exchanger unit ....... 24

9.2 Wiring diagram: Compressor unit............................................... 24

For the user 25

10 About the system 25

10.1 System layout ............................................................................. 25

11 User interface 25
12 Operation 25

12.1 Operation range ......................................................................... 25

12.2 Operating the system ................................................................. 26

12.2.1 About operating the system ......................................... 26

12.2.2 About cooling, heating, fan only, and automatic

operation ...................................................................... 26

12.2.3 About the heating operation......................................... 26

12.2.4 To operate the system (WITHOUT cool/heat

changeover remote control switch) .............................. 26

12.2.5 To operate the system (WITH cool/heat changeover

remote control switch).................................................. 26

12.3 Using the dry program ................................................................ 27

12.3.1 About the dry program ................................................. 27

12.3.2 To use the dry program (WITHOUT cool/heat

changeover remote control switch) .............................. 27

12.3.3 To use the dry program (WITH cool/heat changeover

remote control switch).................................................. 27

12.4 Adjusting the air flow direction.................................................... 27

12.4.1 About the air flow flap .................................................. 27

12.5 Setting the master user interface ............................................... 27

12.5.1 About setting the master user interface ....................... 27

12.5.2 To designate the master user interface (VRV DX)....... 28

13 Maintenance and service 28

13.1 After-sales service and warranty ................................................ 28

13.1.1 Warranty period ........................................................... 28

13.1.2 Recommended maintenance and inspection............... 28

14 Troubleshooting 28

14.1 Error codes: Overview ................................................................ 29

14.2 Symptoms that are not air conditioner troubles .......................... 30

14.2.1 Symptom: The system does not operate ..................... 30

14.2.2 Symptom: Cool/Heat cannot be changed over ............ 30

14.2.3 Symptom: Fan operation is possible, but cooling and

heating do not work...................................................... 30

14.2.4 Symptom: The fan strength does not correspond to

the setting .................................................................... 30

14.2.5 Symptom: The fan direction does not correspond to

the setting .................................................................... 30

14.2.6 Symptom: White mist comes out of a unit (Indoor

unit) .............................................................................. 30

14.2.7 Symptom: White mist comes out of a unit (Indoor

unit, heat exchanger unit) ............................................ 30

RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07

Installation and operation manual

3

1 About the documentation

a

1×

b

1×

c

1×

d

1×e1×f3×

1× 1×1×1×

i jhg

14.2.8 Symptom: The user interface display reads "U4" or
"U5" and stops, but then restarts after a few minutes. 30

14.2.9 Symptom: Noise of air conditioners (Indoor unit, heat

exchanger unit) ........................................................... 30

14.2.10 Symptom: Noise of air conditioners (Indoor unit,

compressor unit, heat exchanger unit)........................ 31

14.2.11 Symptom: Noise of air conditioners (compressor

unit, heat exchanger unit) ........................................... 31

14.2.12 Symptom: Dust comes out of the heat exchanger

unit .............................................................................. 31

14.2.13 Symptom: The units can give off odours..................... 31

14.2.14 Symptom: The heat exchanger unit fan does not spin 31

14.2.15 Symptom: The display shows "88".............................. 31

14.2.16 Symptom: The compressor in the compressor unit

does not stop after a short heating operation ............. 31

14.2.17 Symptom: The inside of an compressor unit is warm

even when the unit has stopped ................................. 31

14.2.18 Symptom: Hot air can be felt when the indoor unit is

stopped ....................................................................... 31

15 Relocation 31
16 Disposal 31

1 About the documentation

1.1 About this document

Target audience

Authorised installers + end users

INFORMATION

This appliance is intended to be used by expert or trained
users in shops, in light industry and on farms, or for
commercial use by lay persons.

Documentation set

This document is part of a documentation set. The complete set
consists of:

▪ General safety precautions:

▪ Safety instructions that you must read before installing

▪ Format: Paper (in the accessory bag of the compressor unit)

▪ Compressor unit installation and operation manual:

▪ Installation and operation instructions

▪ Format: Paper (in the accessory bag of the compressor unit)

▪ Heat exchanger unit installation manual:

▪ Installation instructions

▪ Format: Paper (in the accessory bag of the heat exchanger

unit)

▪ Installer and user reference guide:

▪ Preparation of the installation, technical specifications,

reference data,…

▪ Detailed step-by-step instructions and background information

for basic and advanced usage

▪ Format: Digital files on http://www.daikineurope.com/support-

and-manuals/product-information/

Latest revisions of the supplied documentation may be available on
the regional Daikin website or via your dealer.

The original documentation is written in English. All other languages
are translations.

For the installer

2 About the box

2.1 Compressor unit

2.1.1 To remove the accessories from the compressor unit

1 Remove the accessories (part 1).

2 Remove the service cover. See "5.1.1To open the compressor

unit"on page7.

3 Remove the accessories (part 2).

a General safety precautions
b Compressor unit installation and operation manual
c Fluorinated greenhouse gases label
d Multilingual fluorinated greenhouse gases label
e Screw (for shield of transmission wiring)

f Cable tie

g Gas piping accessory (circuit 1: to heat exchanger unit)

(Ø19.1mm)

h Liquid piping accessory (circuit 1: to heat exchanger unit)

(Ø12.7mm)

i Liquid piping accessory (circuit 2: to indoor units)

(Ø9.5mm)

j Gas piping accessory (circuit 2: to indoor units)

(Ø15.9mm)

2.1.2 To remove the transportation stay

NOTICE

If the unit is operated with the transportation stay attached,
abnormal vibration or noise may be generated.

The transportation stay installed over the compressor leg for
protecting the unit during transport must be removed. Proceed as
shown in the figure and procedure below.

1 Slightly loosen the fixing nut (a).
2 Remove the transportation stay (b) as shown in the figure

below.

3 Tighten the fixing nut (a) again.

Installation and operation manual

4

VRV IV compressor unit for indoor installation

RKXYQ5T7Y1B

4P408443-1 – 2015.07

·

3

1

(10.1 N·m)

2

a

b

3 About the units and options

d d

c c

a

b

VRV DX VRV DX VRV DX EKEXV

AHU

d d

1 2

≥10

a

≥10

≥10≥500

≥10

(mm)

3D098835-1

b

t

Ø

3.1 About the compressor unit and heat exchanger unit

The compressor unit and heat exchanger unit are intended for indoor
installation and aimed for air to air heat pump applications.

Specification RKXYQ5+RDXYQ5

Maximum capacity Heating 16kW

Cooling 14kW

Outside ambient
design temperature

Ambient design temperature of compressor
unit and heat exchanger unit

Heating –20~15.5°CWB
Cooling –5~46°CDB

5~35°CDB

(26°CWB)

3 About the units and options

4 Preparation

4.1 Preparing installation site

4.1.1 Installation site requirements of the compressor unit

▪ Service space. Mind the following requirements:

a Top view
b Front view

NOTICE

This is a class A product. In a domestic environment this
product may cause radio interference in which case the
user may be required to take adequate measures.

3.2 System layout

NOTICE

Design of the system must not be done at temperatures
below –15°C.

1 In case of VRVDX indoor units
2 In case of VRVDX indoor units combined with an air

handling unit

a Heat exchanger unit
b Compressor unit
c Refrigerant piping
d User interface (dedicated depending on indoor unit type)

VRVDX VRV direct expansion (DX) indoor unit

EKEXV Expansion valve kit

AHU Air handling unit

RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07

4.2 Preparing refrigerant piping

4.2.1 Refrigerant piping requirements

NOTICE

Refrigerant R410A requires strict cautions for keeping the
system clean and dry. Foreign materials (including mineral
oils or moisture) should be prevented from getting mixed
into the system.

NOTICE

The piping and other pressure-containing parts shall be
suitable for refrigerant. Use phosphoric acid deoxidised
seamless copper for refrigerant.

▪ Foreign materials inside pipes (including oils for fabrication) must

be ≤30 mg/10 m.

4.2.2 Refrigerant piping material

▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Piping temper grade and thickness:

Outer diameter

(Ø)

6.4mm (1/4")

9.5mm (3/8")

12.7mm (1/2")

15.9mm (5/8") Annealed (O) ≥0.99mm

19.1mm (3/4") Half hard (1/2H) ≥0.80mm

(a) Depending on the applicable legislation and the unit's

Temper grade Thickness (t)

Annealed (O) ≥0.80mm

maximum working pressure (see "PS High" on the unit
name plate), larger piping thickness might be required.

Installation and operation manual

(a)

5

4 Preparation

A

a

B

D

D

C

D

D

b

EKEXV

AHU

VRV DX

VRV DX

c

c

4.2.3 To select the piping size

Determine the proper size referring to following tables and reference
figure (only for indication).

a Heat exchanger unit
b Compressor unit
c Refrigerant branch kit

VRVDX VRVDX indoor unit

EKEXV Expansion valve kit

AHU Air handling unit

A Piping between heat exchanger unit and compressor unit
B Piping between compressor unit and (first) refrigerant

branch kit (=main pipe)

C Piping between refrigerant branch kits
D Piping between refrigerant branch kit and indoor unit

In case the required pipe sizes (inch sizes) are not available, it is
also allowed to use other diameters (mm sizes), taken the following
into account:

▪ Select the pipe size nearest to the required size.

▪ Use the suitable adapters for the change-over from inch to mm

pipes (field supply).

▪ The additional refrigerant calculation has to be adjusted as

mentioned in "5.6.2 To determine the additional refrigerant

amount"on page12.

A: Piping between heat exchanger unit and compressor unit

Use the following diameters:

Compressor unit

capacity type (HP)

5 19.1 12.7

Piping outer diameter size (mm)

Gas pipe Liquid pipe

B: Piping between compressor unit and (first) refrigerant branch kit

If the equivalent pipe length between the heat exchanger unit and
the furthest indoor unit is 90 m or more, it is recommended to
increase the size (size-up) of the main gas pipe (between
compressor unit and first refrigerant branch kit). If the recommended
gas pipe (size-up) is not available, you must use the standard size
(which might result in a small capacity decrease).

Compressor unit

capacity type (HP)

5 15.9 19.1 9.5

Piping outer diameter size (mm)

Gas pipe Liquid pipe

Standard Size-up

C: Piping between refrigerant branch kits

Use the following diameters:

Indoor unit capacity

index

<150 15.9 9.5

Piping outer diameter size (mm)

Gas pipe Liquid pipe

D: Piping between refrigerant branch kit and indoor unit

Use the same diameters as the connections (liquid, gas) on the
indoor units. The diameters of the indoor units are as follows:

Indoor unit capacity

index

15~50 12.7 6.4

63~140 15.9 9.5

Piping outer diameter size (mm)

Gas pipe Liquid pipe

4.2.4 To select refrigerant branch kits

For piping example, refer to "4.2.3 To select the piping size" on

page6.

Refnet joint

When using refnet joints, choose from the following table in
accordance with the capacity of the compressor unit. Example:
Refnet joint c.

Compressor unit capacity type

(HP)

5 KHRQ22M20T

Refnet headers

When using refnet headers, choose from the following table in
accordance with the capacity of the compressor unit.

Compressor unit capacity type

(HP)

5 KHRQ22M29H

INFORMATION

Maximum 8 branches can be connected to a header.

Refrigerant branch kit

Refrigerant branch kit

4.3 Preparing electrical wiring

4.3.1 Safety device requirements

NOTICE

When using residual current operated circuit breakers, be
sure to use a high-speed type 300 mA rated residual
operating current.

Power supply: Compressor unit

The power supply must be protected with the required safety
devices, i.e. a main switch, a slow blow fuse on each phase and an
earth leakage protector in accordance with the applicable legislation.

Selection and sizing of the wiring should be done in accordance with
the applicable legislation based on the information mentioned in the
table below.

Model Minimum circuit

ampacity

RKXYQ5 13.5A 16A

▪ Phase and frequency: 3N~50Hz

▪ Voltage: 380-415V

Transmission wiring

Transmission line section:

Transmission wiring Sheathed + shielded cable (2

Recommended

fuses

wires)

Vinyl cords

0.75~1.25mm²

Installation and operation manual

6

VRV IV compressor unit for indoor installation

RKXYQ5T7Y1B

4P408443-1 – 2015.07

5 Installation

2

3

1

5×

4×

a

≤

480

516

≥666

426

≥640

(mm)

20 mm

1

2

3

4

Maximum wiring length

(= distance between compressor
unit and furthest indoor unit)

Total wiring length

(= distance between compressor
unit and all indoor units, and
between compressor unit and
heat exchanger unit)

If the total transmission wiring exceeds these limits, it may
result in communication error.

300m

600m

5 Installation

5.1 Opening the units

5.1.1 To open the compressor unit

DANGER: RISK OF BURNING

DANGER: RISK OF ELECTROCUTION

1 Remove the service cover of the compressor unit.
2 If you want to make field settings, remove the inspection cover.
3 If you want to connect electrical wiring, remove the switch box

cover.

▪ On a structure. Fix the unit securely with anchor bolts, nuts and

washers (field supply) to the structure. The foundation (steel beam
frame or concrete) must be larger than the grey marked area.

Minimum foundation

a Anchor point (4×)

INFORMATION

The recommended height of the upper protruding part of
the bolts is 20mm.

5.3 Connecting the refrigerant piping

5.2 Mounting the compressor unit

5.2.1 Guidelines when installing the compressor unit

Check the strength and level of the installation ground so that the
unit will not cause any operating vibration or noise. If the vibration
might be transmitted to the building, use a vibration-proof rubber
(field supply).

You can install the compressor unit directly on the floor or on a
structure.

▪ On the floor. You do NOT have to fix the unit with anchor bolts.

DANGER: RISK OF BURNING

5.3.1 Using the stop valve and service port

To handle the stop valve

▪ Make sure to keep all stop valves open during operation.

▪ The stop valve is factory closed.

To open the stop valve

1 Remove the stop valve cover.
2 Insert a hexagon wrench into the stop valve and turn the stop

valve counterclockwise.

3 When the stop valve cannot be turned any further, stop turning.

Result: The valve is now open.

To fully open the Ø19.1 stop valve, turn the hexagonal wrench until a
torque between 27 and 33N•m is achieved.

Inadequate torque may cause leakage of refrigerant and breakage of
the stop valve cap.

RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07

Installation and operation manual

7

5 Installation

c

d

a

b

p<p

>

e

B

A

C

a
b

A

c
d

B

C

C

C

D

D

c

d

b

a

C

C

bB

aA

dB

c

A

C

C

NOTICE

Pay attention that mentioned torque range is applicable for
opening Ø19.1mm stop valves only.

To close the stop valve

1 Remove the stop valve cover.
2 Insert a hexagon wrench into the stop valve and turn the stop

valve clockwise.

3 When the stop valve cannot be turned any further, stop turning.

Result: The valve is now closed.

Closing direction:

To handle the stop valve cover

▪ The stop valve cover is sealed where indicated by the arrow. Take

care not to damage it.

▪ After handling the stop valve, make sure to tighten the stop valve

cover securely. For the tightening torque, refer to the table below.

▪ Check for refrigerant leaks after tightening the stop valve cover.

a Service port and service port cover
b Stop valve
c Field piping connection
d Stop valve cover

2 Connect the vacuuming/recovery unit through a manifold to the

service port of all stop valves.

You have to recover gas and oil from all 4 pinched pipes. Depending
on your available tools, use method 1 (manifold with refrigerant line
splitters required) or method 2.

Manifold Connections Compressor unit

Method 1:

Connect to all service

ports at once.

Method 2:

First connect to the
first 2 service ports.

To handle the service port

▪ Always use a charge hose equipped with a valve depressor pin,

since the service port is a Schrader type valve.

▪ After handling the service port, make sure to tighten the service

port cover securely. For the tightening torque, refer to the table
below.

▪ Check for refrigerant leaks after tightening the service port cover.

Tightening torques

Stop valve

size (mm)

Ø9.5 5.4~6.6 4mm 13.5~16.5 11.5~13.9

Ø19.1 27.0~33.0 8mm 22.5~27.5

Tightening torque N•m (turn clockwise to close)

Shaft

Valve body Hexagonal

wrench

Cap (valve

lid)

5.3.2 To remove the pinched pipes

WARNING

Any gas or oil remaining inside the stop valve may blow off
the pinched piping.

Failure to observe the instructions in procedure below
properly may result in property damage or personal injury,
which may be serious depending on the circumstances.

Use the following procedure to remove the pinched piping:

1 Remove the valve cover and make sure that the stop valves are

fully closed.

Service

port

Then connect to the

last 2 service ports.

a, b, c, d Service ports of stop valves

e Vacuuming/recovery unit

A, B, C Valves A, B and C

D Refrigerant line splitter

3 Recover gas and oil from the pinched piping by using a

recovery unit.

CAUTION

Do not vent gases into the atmosphere.

4 When all gas and oil is recovered from the pinched piping,

disconnect the charge hose and close the service ports.

5 Cut off the lower part of the gas and liquid stop valve pipes

along the black line. Use an appropriate tool (e.g. a pipe cutter,
a pair of nippers).

Installation and operation manual

8

VRV IV compressor unit for indoor installation

RKXYQ5T7Y1B

4P408443-1 – 2015.07

5 Installation

b

a

a

a b c d

a1

c1

c2

c3

a2
a3

b1

b2

b3

d3
d1

d2

a

a

a

a

WARNING

Never remove the pinched piping by brazing.

Any gas or oil remaining inside the stop valve may blow off
the pinched piping.

6 Wait until all oil is dripped out before continuing with the

connection of the field piping in case the recovery was not
complete.

5.3.3 To connect the refrigerant piping to the compressor unit

NOTICE

▪ Be sure to use the supplied accessory pipes when

carrying out piping work in the field.

▪ Be sure that the field installed piping does not touch

other pipes, the bottom panel or side panel.

1 Remove the service cover. See "5.1.1To open the compressor

unit"on page7.

2 Choose a piping route (a or b).

NOTICE

Precautions when making knockout holes:

▪ Avoid damaging the casing.

▪ After making the knockout holes, we recommend you

remove the burrs and paint the edges and areas
around the edges using repair paint to prevent rusting.

▪ When passing electrical wiring through the knockout

holes, wrap the wiring with protective tape to prevent
damage.

4 Connect piping (by brazing) as follows:

a To the back
b To the top

3 If you have chosen the piping route to the top:

a Cut the insulation (under the knockout hole).
b Hit on the knockout hole, and remove it.
c Remove the burrs.
d Paint the edges and areas around the edges using repair

paint to prevent rusting.

a Liquid line (circuit 2: to indoor units)
b Gas line (circuit 2: to indoor units)
c Gas line (circuit 1: to heat exchanger unit)
d Liquid line (circuit 1: to heat exchanger unit)
1 Pinched piping
2 Piping accessory
3 Field piping

5 Reattach the service cover.
6 Seal all gaps (example: a) to prevent small animals from

entering the system.

WARNING

Provide adequate measures to prevent that the unit can be
used as a shelter by small animals. Small animals that
make contact with electrical parts can cause malfunctions,
smoke or fire.

RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07

Installation and operation manual

9

5 Installation

Refrigerant piping works are
finished?

The indoor units, compressor
unit and/or heat exchanger
unit were already powered
ON?

Use procedure:

"Method 2: After power ON".

Finish piping work.

Use procedure:

"Method 1: Before power ON
(regular method)".

Yes

No

No

Yes

p<p

>

R410AN2

b c e

a

d

B

A

C

g
h

A

f
i

B

C

C

C

D

D

h

i

g

f

i

B

hA

C

C

C

C

f

B

gA

5.4 Checking the refrigerant piping

5.4.1 About checking the refrigerant piping

It is very important that all refrigerant piping work is done before the
units (compressor unit, heat exchanger unit or indoor units) are
powered on.

When the units are powered on, the expansion valves will initialise.
This means that they will close. Leak test and vacuum drying of field
piping, heat exchanger unit and indoor units is impossible when this
happens.

Therefore, there will be explained 2 methods for initial installation,
leak test and vacuum drying.

Method 1: Before power ON

If the system has not yet been powered on, no special action is
required to perform the leak test and the vacuum drying.

Method 2: After power ON

If the system has already been powered on, activate setting [2‑21]
(refer to "6.1.4 To access mode 1 or 2" on page16). This setting
will open field expansion valves to guarantee a R410A piping
pathway and make it possible to perform the leak test and the
vacuum drying.

NOTICE

Make sure that the heat exchanger unit and all indoor units
connected to the compressor unit are powered on.

NOTICE

Wait until the compressor unit has finished the initialisation
to apply setting [2‑21].

Leak test and vacuum drying

Checking the refrigerant piping involves:

▪ Checking for any leakages in the refrigerant piping.

▪ Performing vacuum drying to remove all moisture, air or nitrogen

in the refrigerant piping.

If there is a possibility of moisture being present in the refrigerant
piping (for example, water may have entered the piping), first carry
out the vacuum drying procedure below until all moisture has been
removed.

All piping inside the unit has been factory tested for leaks.

Only field installed refrigerant piping needs to be checked.
Therefore, make sure that all the compressor unit stop valves are
firmly closed before performing leak test or vacuum drying.

Installation and operation manual

10

NOTICE

Make sure that all (field supplied) field piping valves are
OPEN (not compressor unit stop valves!) before you start
leak test and vacuuming.

For more information on the state of the valves, refer to

"5.4.3Checking refrigerant piping: Setup"on page10.

5.4.2 Checking refrigerant piping: General guidelines

Connect the vacuum pump through a manifold to the service port of
all stop valves to increase efficiency (refer to "5.4.3 Checking

refrigerant piping: Setup"on page10).

NOTICE

Use a 2-stage vacuum pump with a non-return valve or a
solenoid valve that can evacuate to a gauge pressure of
–⁠100.7kPa (5Torr absolute).

NOTICE

Make sure the pump oil does not flow oppositely into the
system while the pump is not working.

NOTICE

Do not purge the air with refrigerants. Use a vacuum pump
to evacuate the installation.

5.4.3 Checking refrigerant piping: Setup

The system contains 2 refrigerant circuits:
▪ Circuit 1: Compressor unit → Heat exchanger unit
▪ Circuit 2: Compressor unit → Indoor units

You have to check both circuits (leak test, vacuuming drying). How
to check depends on your available tools:

If you have a

manifold…

With refrigerant line
splitters

You can check both circuits at once. To do
so, connect the manifold via the splitters to
both circuits, and check.

Without refrigerant
line splitters

(takes twice as long)

You have to check the circuits separately. To
do so:

▪ First connect the manifold to circuit 1,

and check.

▪ Then connect the manifold to circuit 2,

and check.

Possible connections:

Manifold Connections Compressor unit

Circuit 1 and 2

together

Only circuit 1

Only circuit 2

VRV IV compressor unit for indoor installation

Then

RKXYQ5T7Y1B

4P408443-1 – 2015.07