Daikin RXYSQ6T8Y1B9 Operation manuals

Installation and operation

manual

VRV IV-S system air conditioner

RXYSQ6T8Y1B9

Installation and operation manual

VRV IV-S system air conditioner

English

1+2

A~E

a b c d e e

HBHDH

(mm)

B — ≥100 A, B, C — ≥100 ≥100 ≥100 B, E — ≥100 ≥1000 ≤500 A, B, C, E — ≥150 ≥150 ≥150 ≥1000 ≤500 D — ≥500 D, E — ≥1000 ≥1000 ≤500 B, D — ≥100 ≥500 B, D, E HB<HDHB≤½H

≥250 ≥750 ≥1000 ≤500

½HU<HB≤H

≥250 ≥1000 ≥1000 ≤500

HB>H

HB>HDHD≤½H

≥100 ≥1000 ≥1000 ≤500

½HU<HD≤H

≥200 ≥1000 ≥1000 ≤500

HD>H

≥200 ≥1700 ≥1000 ≤500

≥100

A, B, C — ≥200 ≥300 ≥1000 A, B, C, E — ≥200 ≥300 ≥1000 ≥1000 ≤500 D — ≥1000 D, E — ≥1000 ≥1000 ≤500 B, D HD>H

≥300 ≥1000

HD≤½H

≥250 ≥1500

½HU<HD≤H

≥300 ≥1500

B, D, E HB<HDHB≤½H

≥300 ≥1000 ≥1000 ≤500

½HU<HB≤H

≥300 ≥1250 ≥1000 ≤500

HB>H

HB>HDHD≤½H

≥250 ≥1500 ≥1000 ≤500

½HU<HD≤H

≥300 ≥1500 ≥1000 ≤500

HD>H

≥300 ≥2200 ≥1000 ≤500

b (mm)

HB≤½H

b≥250

½HU<HB≤H

b≥300

HB>H

HBH

≥1000

≥200

≥2000

≥100

≥3000

≥600

≥1500

≥100

≥1000

≥300

≥100

≥300

≥100

≥1000

Directivelor, cu amendamentele respective.

<A>

<C>

TÜV (NB1856)

12080901.T30

DAIKIN.TCF.030A29/04-2017

Direktive z vsemi spremembami.

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.

Direktiver, med foretatte endringer.

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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

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návodom:

Directives, as amended.

Direktiven, gemäß Änderung.

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

Directives, telles que modifiées.

010203040506070809

Değiştirilmiş halleriyle Yönetmelikler.

Direktiivejä, sellaisina kuin ne ovat muutettuina.

v platném znění.

Smjernice, kako je izmijenjeno.

irányelv(ek) és módosításaik rendelkezéseit.

z późniejszymi poprawkami.

както е изложено в <A> и оценено положително от

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kā norādīts <A> un atbilstoši pozitīvajam vērtējumam

saskaņā ar sertifikātu<C>.

Richtlijnen, zoals geamendeerd.

Directivas, según lo enmendado.

Direttive, come da modifica.

Οδηγιών, όπως έχουν τροποποιηθεί.

Directivas, conforme alteração em.

Директив со всеми поправками.

21Забележка*

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23Piezīmes*

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16Megjegyzés*

17Uwaga*

18Notă*

19Opomba*

20Märkus*

Machinery 2006/42/EC

Low Voltage 2014/35/EU

enligt <A> och godkänts av enligt

Certifikatet<C>.

som det fremkommer i <A> og gjennom positiv

bedømmelse av ifølge Sertifikat<C>.

jotka on esitetty asiakirjassa <A> ja jotka

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jak bylo uvedeno v <A> a pozitivně zjištěno

vsouladu sosvědčením<C>.

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

Electromagnetic Compatibility 2014/30/EU

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:

08091011121314

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

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*

bunun koşullarına uygun olarak:

delineato nel <A> e giudicato positivamente da

secondo il Certificato<C>.

όπως καθορίζεται στο <A> και κρίνεται θετικά

από το σύμφωνα με το Πιστοποιητικό<C>.

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

prema Certifikatu<C>.

14Poznámka*

15Napomena*

de de acordo com o Certificado<C>.

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решением согласно Свидетельству<C>.

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

Certifikat<C>.

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Daikin Europe N.V. är bemyndigade att sammanställa den tekniska konstruktionsfilen.

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

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Shigeki Morita

Director

Ostend, 3rd of May 2017

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:

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

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

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

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

Daikin Europe N.V.

03

06Nota*

07Σημείωση*

08Nota*

09Примечание*

10Bemærk*

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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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:

RXYSQ4T8VB*, RXYSQ5T8VB*, RXYSQ6T8VB*,

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07

RXYSQ4T8YB*, RXYSQ5T8YB*, RXYSQ6T8YB*,

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:

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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:

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RXYSQ6T8Y1B*,

* = , , 1, 2, 3, ..., 9

01020304050607

σύμφωνα με τις οδηγίες μας:

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EN60335-2-40,

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010203040506070809

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01Note*

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05Nota*

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

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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.

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3P397286-4E

Table of Contents

1 About the documentation 5

1.1 About this document.................................................................. 5

For the installer 5

2 About the box 5

2.1 Outdoor unit............................................................................... 5

2.1.1 To remove the accessories from the outdoor unit....... 5

3 About the units and options 6

3.1 About the outdoor unit ............................................................... 6

3.2 System layout............................................................................ 6

4 Preparation 6

4.1 Preparing installation site .......................................................... 6

4.1.1 Installation site requirements of the outdoor unit ........ 6

4.1.2 Additional installation site requirements of the

outdoor unit in cold climates ....................................... 6

4.2 Preparing refrigerant piping....................................................... 6

4.2.1 Refrigerant piping requirements.................................. 6

4.2.2 Refrigerant piping material.......................................... 6

4.2.3 To select the piping size ............................................. 7

4.2.4 To select refrigerant branch kits.................................. 7

4.3 Preparing electrical wiring ......................................................... 7

4.3.1 Safety device requirements ........................................ 7

5 Installation 8

5.1 Opening the units ...................................................................... 8

5.1.1 To open the outdoor unit............................................. 8

5.2 Mounting the outdoor unit.......................................................... 8

5.2.1 To provide the installation structure............................ 8

5.2.2 To install the outdoor unit............................................ 8

5.2.3 To provide drainage.................................................... 8

5.2.4 To prevent the outdoor unit from falling over .............. 9

5.3 Connecting the refrigerant piping .............................................. 9

5.3.1 Using the stop valve and service port......................... 9

5.3.2 To connect the refrigerant piping to the outdoor 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......... 11

5.4.3 Checking refrigerant piping: Setup.............................. 11

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

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

5.5 To insulate the refrigerant piping............................................... 12

5.6 Charging refrigerant .................................................................. 12

5.6.1 Precautions when charging refrigerant ....................... 12

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

5.6.3 To charge refrigerant .................................................. 13

5.6.4 Error codes when charging refrigerant........................ 14

5.6.5 To fix the fluorinated greenhouse gases label ............ 14

5.7 Connecting the electrical wiring................................................. 14

5.7.1 Field wiring: Overview................................................. 14

5.7.2 Guidelines when knocking out knockout holes ........... 14

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

5.7.4 To connect the electrical wiring on the outdoor unit.... 14

5.8 Finishing the outdoor unit installation ........................................ 15

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

6 Configuration 16

6.1 Making field settings................................................................... 16

6.1.1 About making field settings.......................................... 16

6.1.2 To access the field setting components....................... 16

6.1.3 Field setting components............................................. 16

6.1.4 To access mode 1 or 2 ................................................ 17

6.1.5 To use mode 1............................................................. 17

6.1.6 To use mode 2............................................................. 18

6.1.7 Mode 1 (and default situation): Monitoring settings ..... 18

6.1.8 Mode 2: Field settings.................................................. 19

6.1.9 To connect the PC configurator to the outdoor unit ..... 21

7 Commissioning 21

7.1 Precautions when commissioning .............................................. 21

7.2 Checklist before commissioning................................................. 21

7.3 Checklist during commissioning ................................................. 22

7.3.1 About test run............................................................... 22

7.3.2 To perform a test run (7-LEDs display)........................ 22

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 ................................................. 23

9 Technical data 24

9.1 Service space: Outdoor unit ....................................................... 24

9.2 Piping diagram: Outdoor unit...................................................... 24

9.3 Wiring diagram: Outdoor unit ..................................................... 25

For the user 26

10 About the system 26

10.1 System layout............................................................................. 26

11 User interface 26 12 Operation 26

12.1 Operation range ......................................................................... 26

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) .............................. 27

12.2.5 To operate the system (WITH cool/heat changeover

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

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.................................................... 28

12.4.1 About the air flow flap .................................................. 28

12.5 Setting the master user interface ............................................... 28

12.5.1 About setting the master user interface ....................... 28

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

13 Maintenance and service 28

13.1 About the refrigerant................................................................... 29

13.2 After-sales service and warranty ................................................ 29

13.2.1 Warranty period ........................................................... 29

13.2.2 Recommended maintenance and inspection............... 29

Installation and operation manual

VRV IV-S system air conditioner

RXYSQ6T8Y1B9

4P482276-1 – 2017.04

1 About the documentation

1×

e f

1× 1×

1×

14 Troubleshooting 29

14.1 Error codes: Overview............................................................... 30

14.2 Symptoms that are NOT system malfunctions .......................... 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 ................................................................... 31

14.2.5 Symptom: The fan direction does not correspond to

the setting ................................................................... 31

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

unit) ............................................................................. 31

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

unit, outdoor unit) ........................................................ 31

14.2.8 Symptom: The user interface display reads "U4" or "U5" and stops, but then restarts after a few minutes. 31

14.2.9 Symptom: Noise of air conditioners (Indoor unit)........ 31

14.2.10 Symptom: Noise of air conditioners (Indoor unit,

outdoor unit)................................................................ 31

14.2.11 Symptom: Noise of air conditioners (Outdoor unit) ..... 31

14.2.12 Symptom: Dust comes out of the unit ......................... 31

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

14.2.14 Symptom: The outdoor unit fan does not spin ............ 31

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

14.2.16 Symptom: The compressor in the outdoor unit does

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

14.2.17 Symptom: The inside of an outdoor 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 box of the outdoor unit)

▪ Outdoor unit installation and operation manual:

▪ Installation and operation instructions

▪ Format: Paper (in the box of the outdoor unit)

▪ Installer and user reference guide:

▪ Preparation of the installation, 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.

Technical engineering data

▪ A subset of the latest technical data is available on the regional

Daikin website (publicly accessible).

▪ The full set of latest technical data is available on the Daikin

extranet (authentication required).

For the installer

2 About the box

2.1 Outdoor unit

2.1.1 To remove the accessories from the outdoor unit

1 Remove the service cover. See "5.1.1 To open the outdoor

unit"on page8.

RXYSQ6T8Y1B9 VRV IV-S system air conditioner 4P482276-1 – 2017.04

2 Remove the accessories.

a General safety precautions b Outdoor unit installation and operation manual c Fluorinated greenhouse gases label d Multilingual fluorinated greenhouse gases label e Gas piping accessory 1 + copper gasket

f Gas piping accessory 2

g Gas piping accessory 3

Installation and operation manual

3 About the units and options

d d

c cb

(°C WB)

a b

15.5 15

–5

–10

–15

–20

10 15 20 25

(°C DB)

3 About the units and options

3.1 About the outdoor unit

This installation manual concerns the VRV IV-S, full inverter driven, heat pump system.

These units are intended for outdoor installation and aimed for air to air heat pump applications.

Specification RXYSQ6

Capacity Heating 18.1kW

Cooling 18.1kW

Ambient design temperature

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

3.2 System layout

NOTICE

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

a VRV IV-S Heat pump outdoor unit

b Refrigerant piping

c VRV direct expansion (DX) indoor unit

d User interface (dedicated depending on indoor unit type)

4 Preparation

4.1 Preparing installation site

4.1.1 Installation site requirements of the outdoor unit

Mind the spacing guidelines. See the "Technical data" chapter, and the figures on the inside of the front cover.

CAUTION

Appliance not accessible to the general public, install it in a secured area, protected from easy access.

This unit, both indoor and outdoor, is suitable for installation in a commercial and light industrial environment.

Installation and operation manual

4.1.2 Additional installation site requirements of the outdoor unit in cold climates

NOTICE

When operating the unit in heating in a low outdoor ambient temperature with high humidity conditions, make sure to take precautions to keep the drain holes of the unit free by using proper equipment.

In heating:

a Warming up operation range b Operation range

TAI Ambient indoor temperature TAO Ambient outdoor temperature

If the unit is selected to operate at ambient temperatures lower than –5°C for 5 days or longer, with relative humidity levels exceeding 95%, we recommend to apply a Daikin range specifically designed for such application and/or to contact your dealer for further advice.

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) Temper grade Thickness (t)

6.4mm (1/4")

Annealed (O) ≥0.80mm

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

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

▪ Flare connections: Only use annealed material.

VRV IV-S system air conditioner

(a)

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4 Preparation

B-1 B-2

C-1 C-2 C-3 C-4

3-1 3-2 3-3 3-4

VRV DX

2 2

b c

4.2.3 To select the piping size

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

1 Outdoor unit 2 Refrigerant branch kits

3-1~3-4 VRVDX indoor units

A Piping between outdoor unit and (first) refrigerant branch

kit

B-1 B-2 Piping between refrigerant branch kits

C-1~C-4 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 outdoor unit and (first) refrigerant branch kit

When the equivalent pipe length between outdoor and indoor units is 90m or more, the size of the main gas pipe must be increased (sizeup). If the recommended gas pipe (size-up) is not available, you must use the standard size (which might result in a small capacity decrease).

C: 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7.

Refnet joint at first branch (counting from outdoor unit)

When using refnet joints at the first branch counted from the outdoor unit side, choose from the following table in accordance with the capacity of the outdoor unit. Example: Refnet joint A→B‑1.

Outdoor unit capacity type (HP) Refrigerant branch kit

6 KHRQ22M20T

Refnet joints at other branches

For refnet joints other than the first branch, select the proper branch kit model based on the total capacity index of all indoor units connected after the refrigerant branch. Example: Refnet joint B‑1→C‑1.

Indoor unit capacity index Refrigerant branch kit

<176 KHRQ22M20T

Refnet headers

Concerning refnet headers, choose from the following table in accordance with the total capacity of all the indoor units connected below the refnet header.

Indoor unit capacity index Refrigerant branch kit

<176 KHRQ22M29H

INFORMATION

Maximum 8 branches can be connected to a header.

Outdoor unit

capacity type (HP)

6 19.1 22.2 9.5

B: Piping between refrigerant branch kits

Choose from the following table in accordance with the indoor unit total capacity type, connected downstream. Do not let the connection piping exceed the refrigerant piping size chosen by the general system model name.

Indoor unit capacity

index

<150 15.9 9.5

150≤x≤176 19.1

Example: Downstream capacity for B-1 = capacity index of unit 3-1 + capacity index of unit 3-2

RXYSQ6T8Y1B9 VRV IV-S system air conditioner 4P482276-1 – 2017.04

a Outdoor unit b Main gas pipe c Increase d First refrigerant branch kit e Indoor unit

Piping outer diameter size (mm)

Gas pipe Liquid pipe

Standard Size-up

Piping outer diameter size (mm)

Gas pipe Liquid pipe

4.3 Preparing electrical wiring

4.3.1 Safety device requirements

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

RXYSQ6_Y1 14.1A 16A 3N~ 50Hz

Transmission wiring

Transmission wiring Vinyl cords with 0.75 to 1.25mm²

Maximum wiring length (= distance between outdoor and

furthest indoor unit) Total wiring length

(= distance between outdoor and all indoors)

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

Recommended

fuses

sheath or cables (2‑core wires)

Installation and operation manual

Power supply

380-415V

300m

600m

5 Installation

45°~90°

(4)

1×

(mm)

>150

620

350

(345-355)

4× M12

≥150 mm

117

102

376

191

a a a

5 Installation

5.1 Opening the units

5.1.1 To open the outdoor unit

DANGER: RISK OF ELECTROCUTION

DANGER: RISK OF BURNING

5.2 Mounting the outdoor unit

5.2.1 To provide the installation structure

Prepare 4 sets of anchor bolts, nuts and washers (field supply) as follows:

NOTICE

Fix the outdoor unit to the foundation bolts using nuts with resin washers (a). If the coating on the fastening area is stripped off, the nuts rust easily.

5.2.2 To install the outdoor unit

5.2.3 To provide drainage

▪ Make sure that condensation water can be evacuated properly. ▪ Install the unit on a base to make sure that there is a proper

drainage in order to avoid ice accumulation.

▪ Prepare a water drainage channel around the foundation to drain

waste water surrounding the unit.

▪ Avoid drain water flowing over the footpath, so that it does not

become slippery in case of ambient freezing temperatures.

▪ If you install the unit on a frame, install a waterproof plate within

150 mm of the bottom side of the unit in order to prevent the invasion of water in the unit and to avoid the drain water dripping (see the following illustration).

Installation and operation manual

a Make sure not to cover the drain holes.

INFORMATION

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

NOTICE

If drain holes of the outdoor unit are covered by a mounting base or by floor surface, raise the unit to provide a free space of more than 150mm under the outdoor unit.

Drain holes (dimensions in mm)

a Drain holes

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5 Installation

b d

5.2.4 To prevent the outdoor unit from falling over

1 Prepare 2 cables as indicated in the following illustration (field

supply).

2 Place the 2 cables over the outdoor unit. 3 Insert a rubber sheet between the cables and the outdoor unit

to prevent the cable from scratching the paint (field supply).

4 Attach the cable’s ends. Tighten those ends.

5.3 Connecting the refrigerant piping

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 handle the stop valve cover

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

NOT damage it.

▪ After handling the stop valve, tighten the stop valve cover

securely, and check for refrigerant leaks. For the tightening torque, refer to the table below.

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

Ø15.9 13.5~16.5 6mm 22.5~27.5

Tightening torque N•m (turn clockwise to close)

Shaft

Valve body Hexagonal

wrench

Cap (valve

lid)

Service

port

5.3.2 To connect the refrigerant piping to the outdoor unit

NOTICE

Be sure that the field installed piping does not touch other pipes, the bottom panel or side panel. Especially for the bottom and side connection, be sure to protect the piping with suitable insulation, to prevent it from coming into contact with the casing.

1 Do the following:

▪ Remove the service cover (a) with screw (b). ▪ Remove the piping intake plate (c) with screw (d).

2 Choose a piping route (a, b, c or d).

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:

RXYSQ6T8Y1B9 VRV IV-S system air conditioner 4P482276-1 – 2017.04

Installation and operation manual

5 Installation

4× Ø6 mm

e1 ecdf

d e f

d e1 e f

Refrigerant piping works are finished?

The indoor units and/or outdoor 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

3 If you have chosen the downwards piping route:

▪ Drill (a, 4×) and remove the knockout hole (b). ▪ Cut out the slits (c) with a metal saw.

4 Do the following:

▪ Connect the liquid pipe (a) to the liquid stop valve. ▪ Connect the gas pipe (b) to the gas stop valve.

▪ Connect the gas piping accessories (c, c1, d, e), and cut

them to the required length (e1). This is necessary because the size of the gas stop valve is Ø15.9 while the piping between outdoor unit and first refrigerant branch kit is Ø19.1.

Possibility 1: To the front

Possibility 2: To the back

5 Reattach the service cover and the piping intake plate. 6 Seal all gaps (example: a) to prevent snow and 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.

NOTICE

Make sure to open the stop valves after installing the refrigerant piping and performing vacuum drying. Running the system with the stop valves closed may break the compressor.

5.4 Checking the refrigerant piping

5.4.1 About checking the refrigerant piping

Possibility 3: To the side

Installation and operation manual

c, c1 Gas piping accessory 1 + copper gasket (always use it)

e, e1 Gas piping accessory 3 (cut it to the required length)

d Gas piping accessory 2

f Field supply

Possibility 4: Downwards

It is very important that all refrigerant piping work is done before the units (outdoor or indoor) 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 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17). 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 all indoor units connected to the outdoor unit are powered on.

NOTICE

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

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