Daikin RXYSCQ4TMV1B, RXYSCQ5TMV1B user guide manual

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Installation and operation

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VRV IV-S system air conditioner

RXYSCQ4TMV1B RXYSCQ5TMV1B

Installation and operation manual

VRV IV-S system air conditioner

English

A~E

a b c d e e

B — ≥100 A, B, C — ≥250 ≥100 ≥100 B, E — ≥100 ≥1000 ≤500 A, B, C, E — ≥250 ≥150 ≥150 ≥1000 ≤500 D — ≥500 D, E — ≥500 ≥1000 ≤500 B, D — ≥100 ≥500 B, D, E

1+2

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

A, B, C — ≥250 ≥300 ≥1000 A, B, C, E — ≥250 ≥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 ≥1000 ≥1000 ≤500

½HU<HD≤H

≥300 ≥1000 ≥1000 ≤500

HD>H

HBHDH

(mm)

≥250

b (mm)

≥1000

≥200

≥2000

≥100

≥3000

≥1500

≥250

HB≤½H

b≥250

½HU<HB≤H

b≥300

HB>H

HBH

≥500

≥1000

≥500

≥300

≥250

≥100

≥300

≥250

≥100

≥1000

Directivelor, cu amendamentele respective.

<A>

<C>

TÜV (NB1856)

12080901.T30

DAIKIN.TCF.030A12/04-2015

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.

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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

съгласно Сертификата<C>.

kaip nustatyta <A> ir kaip teigiamai nuspręsta pagal

Sertifikatą<C>.

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*

22Pastaba*

23Piezīmes*

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

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

Daikin Europe N.V. е оторизирана да състави Акта за техническа конструкция.

Daikin Europe N.V. yra įgaliota sudaryti šį techninės konstrukcijos failą.

Daikin Europe N.V. ir autorizēts sastādīt tehnisko dokumentāciju.

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

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ako bolo uvedené v <A> a pozitívne zistené vsúlade

s osvedčením<C>.

<A>’da belirtildiği gibi ve <C>Sertifikasına göre

tarafından olumlu olarak değerlendirildiği gibi.

24Poznámka*

25Not*

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

<C>tanúsítvány szerint.

zgodnie z dokumentacją <A>, pozytywną

opinią i Świadectwem<C>.

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

în conformitate cu Certificatul<C>.

kot je določeno v <A> in odobreno s strani

vskladu scertifikatom<C>.

nagu on näidatud dokumendis <A> ja heaks kiidetud

järgi vastavalt sertifikaadile<C>.

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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Daikin Europe N.V. ma upoważnienie do zbierania i opracowywania dokumentacji konstrukcyjnej.

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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 enligt

Certifikatet<C>.

som det fremkommer i <A> og gjennom positiv

bedømmelse av ifølge Sertifikat<C>.

jotka on esitetty asiakirjassa <A> ja jotka

on hyväksynyt Sertifikaatin<C> mukaisesti.

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:

održiavajúc ustanovenia:

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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*

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.

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

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

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

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

Certifikat<C>.

de de acordo com o Certificado<C>.

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

решением согласно Свидетельству<C>.

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

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Shigeki Morita

Director

Ostend, 1st of April 2016

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:

03

Daikin Europe N.V.

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:

06

07

RXYSCQ4TMV1B*, RXYSCQ5TMV1B*,

* = , , 1, 2, 3, ..., 9

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

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σύμφωνα με τις οδηγίες μας:

following the provisions of:

gemäß den Vorschriften der:

conformément aux stipulations des:

overeenkomstig de bepalingen van:

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EN60335-2-40,

în urma prevederilor:

wie in <A> aufgeführt und von positiv

beurteilt gemäß Zertifikat<C>.

tel que défini dans <A> et évalué positivement par

conformément au Certificat<C>.

as set out in <A> and judged positively by

according to the Certificate<C>.

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*

zoals vermeld in <A> en positief beoordeeld door

02Hinweis*

03Remarque*

04Bemerk*

como se establece en <A> y es valorado

positivamente por de acuerdo con el

Certificado<C>.

overeenkomstig Certificaat<C>.

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.

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

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

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2P406920-1A

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 5

3.1 About the outdoor unit ............................................................... 5

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

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 ............................................. 6

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............................................... 11

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 .................................................. 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 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 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............................................................ 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 outdoor unit ..... 20

7 Commissioning 20

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

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

7.3 Checklist during commissioning ................................................. 20

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... 21

7.3.4 Operating the unit ........................................................ 21

8 Troubleshooting 21

8.1 Solving problems based on error codes..................................... 21

8.1.1 Error codes: Overview ................................................. 21

9 Technical data 22

9.1 Service space: Outdoor unit ....................................................... 23

9.2 Piping diagram: Outdoor unit...................................................... 23

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

12.2.1 About operating the system ......................................... 25

12.2.2 About cooling, heating, fan only, and automatic

operation ...................................................................... 25

12.2.3 About the heating operation......................................... 25

12.2.4 To operate the system ................................................. 26

12.3 Using the dry program ................................................................ 26

12.3.1 About the dry program ................................................. 26

12.3.2 To use the dry program................................................ 26

12.4 Adjusting the air flow direction.................................................... 26

12.4.1 About the air flow flap .................................................. 26

12.5 Setting the master user interface ............................................... 26

12.5.1 About setting the master user interface ....................... 26

12.5.2 To designate the master user interface (VRV DX)....... 27

12.5.3 To designate the master user interface (RA DX) ......... 27

13 Maintenance and service 27

13.1 About the refrigerant................................................................... 27

13.2 After-sales service and warranty ................................................ 27

13.2.1 Warranty period ........................................................... 27

13.2.2 Recommended maintenance and inspection............... 27

14 Troubleshooting 28

14.1 Error codes: Overview ................................................................ 28

14.2 Symptoms that are not air conditioner troubles .......................... 29

14.2.1 Symptom: The system does not operate ..................... 29

14.2.2 Symptom: Fan operation is possible, but cooling and

heating do not work...................................................... 29

14.2.3 Symptom: The fan strength does not correspond to

the setting .................................................................... 29

14.2.4 Symptom: The fan direction does not correspond to

the setting .................................................................... 29

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

unit) .............................................................................. 29

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

unit, outdoor unit) ......................................................... 29

14.2.7 Symptom: The user interface display reads "U4" or "U5" and stops, but then restarts after a few minutes.. 29

14.2.8 Symptom: Noise of air conditioners (Indoor unit)......... 30

Installation and operation manual

VRV IV-S system air conditioner

RXYSCQ4+5TMV1B

4P399985-1D – 2016.03

1 About the documentation

1×

d e

1× 2×

d d

c c

14.2.9 Symptom: Noise of air conditioners (Indoor unit,

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

14.2.10 Symptom: Noise of air conditioners (Outdoor unit)..... 30

14.2.11 Symptom: Dust comes out of the unit......................... 30

14.2.12 Symptom: The units can give off odours..................... 30

14.2.13 Symptom: The outdoor unit fan does not spin............ 30

14.2.14 Symptom: The display shows "88".............................. 30

14.2.15 Symptom: The compressor in the outdoor unit does

not stop after a short heating operation ...................... 30

14.2.16 Symptom: The inside of an outdoor unit is warm

even when the unit has stopped ................................. 30

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

stopped ....................................................................... 30

15 Relocation 30 16 Disposal 30

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, 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 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.

2 Remove the accessories.

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 RXYSCQ4+5

Capacity Heating 14.2~16.0kW

Cooling 12.1~14.0kW

Ambient design temperature

3.2 System layout

NOTICE

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

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

a General safety precautions b Outdoor unit installation and operation manual c Fluorinated greenhouse gases label d Installation information sticker e Cable tie

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

Installation and operation manual

4 Preparation

(°C WB)

a b

15.5 15

–5

–10

–15

–20

10 15 20 25

(°C DB)

B-1 B-2

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

1 1

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

RA DXVRV DX

5 5 5 5

2 2

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)

e BP box (required to connect Residential Air (RA) or Sky Air

(SA) direct expansion (DX) indoor units)

f Residential Air (RA) direct expansion (DX) indoor units

g User interface (wireless, 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.

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:

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

Temper grade Thickness (t)

(Ø)

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

(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.

(a)

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.

Installation and operation manual

4.2.3 To select the piping size

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

INFORMATION

▪ Combination of VRVDX and RADX indoor units is not

allowed.

▪ Combination of RA DX and AHU indoor units is not

allowed.

▪ Combination of RADX and aircurtain indoor units is not

allowed.

INFORMATION

If you install RADX indoor units, you have to configure field setting [2‑38] (= type of installed indoor units). See

"6.1.8Mode 2: Field settings"on page18.

1 Outdoor unit 2 Refrigerant branch kits

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VRV IV-S system air conditioner

4P399985-1D – 2016.03

4 Preparation

b c

3-1~3-4 VRVDX indoor units

4 BP units 5 RA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

D Piping between refrigerant branch kit and BP unit E Piping between BP unit and RADX 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).

D: Piping between refrigerant branch kit and BP unit

Total capacity index of connected indoor

units

15~62 12.7 6.4

63~149 15.9 9.5

Piping outer diameter size (mm)

Gas pipe Liquid pipe

E: Piping between BP unit and RA DX indoor unit

Indoor unit capacity

index

15~42 9.5 6.4

50 12.7 60 9.5 71 15.9

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 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.

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

Outdoor unit

capacity type (HP)

4+5 15.9 19.1 9.5

Piping outer diameter size (mm)

Gas pipe Liquid pipe

Standard Size-up

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≤162.5 19.1

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

Piping outer diameter size (mm)

Gas pipe Liquid pipe

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

Outdoor unit capacity type

(HP)

4+5 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

<162.5 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

<162.5 KHRQ22M29H

INFORMATION

Maximum 8 branches can be connected to a header.

Refrigerant branch kit

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

RXYSCQ4+5 29.1A 32A

Recommended

fuses

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

For all models:

Installation and operation manual

5 Installation

5×

(mm)

>150

620

(485-495)

490

4× M12

≥150 mm

▪ Phase and frequency: 1~50Hz

▪ Voltage: 220-240V

▪ Transmission line section:

Transmission wiring Vinyl cords with 0.75 to

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.

1.25mm² sheath or cables (2‑core wires)

300m

600m

5 Installation

5.1 Opening the units

5.1.1 To open the outdoor unit

DANGER: RISK OF ELECTROCUTION

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

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

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:

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

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.

RXYSCQ4+5TMV1B

VRV IV-S system air conditioner

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5 Installation

521021185962

216 130

21 89

Drain holes (dimensions in mm)

a Drain holes

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.

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.

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 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. See "5.1.1To open the outdoor

unit"on page8.

▪ Remove the piping intake plate (a) with screw (b).

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

Installation and operation manual

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

5 Installation

4× Ø6 mm

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.

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

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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 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].

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 outdoor unit stop valves are firmly closed before performing leak test or vacuum drying.

Installation and operation manual

NOTICE

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

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VRV IV-S system air conditioner

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5 Installation

p<p

b c e

A B

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

"5.4.3Checking refrigerant piping: Setup"on page11.

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11).

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

a Pressure reducing valve b Nitrogen c Weighing scales d Refrigerant R410A tank (siphon system) e Vacuum pump

f Liquid line stop valve g Gas line stop valve A Valve A B Valve B C Valve C

Valve State of valve

Valve A Open Valve B Open Valve C Open Liquid line stop valve Close Gas line stop valve Close

NOTICE

The connections to the indoor units and all indoor units should also be leak and vacuum tested. Keep any possible (field supplied) field piping valves open as well.

Refer to the indoor unit installation manual for more details. Leak test and vacuum drying should be done before the power supply is set to the unit. If not, see also the flow chart earlier described in this chapter (see "5.4.1 About

checking the refrigerant piping"on page10).

3 Should the pressure rise, the system may either contain

moisture (see vacuum drying below) or have leaks.

To check for leaks: Pressure leak test

1 Break the vacuum by pressurising with nitrogen gas to a

minimum gauge pressure of 0.2 MPa (2 bar). Never set the gauge pressure higher than the maximum operation pressure of the unit, i.e. 4.0MPa (40bar).

2 Test for leaks by applying a bubble test solution to all piping

connections.

3 Discharge all nitrogen gas.

NOTICE

Make sure to use a recommended bubble test solution from your wholesaler. Do not use soap water, which may cause cracking of flare nuts (soap water may contain salt, which absorbs moisture that will freeze when the piping gets cold), and/or lead to corrosion of flared joints (soap water may contain ammonia which causes a corrosive effect between the brass flare nut and the copper flare).

5.4.5 To perform vacuum drying

To remove all moisture from the system, proceed as follows:

1 Evacuate the system for at least 2 hours to a target vacuum of

–⁠100.7kPa (–⁠1.007bar/5Torr).

2 Check that, with the vacuum pump turned off, the target

vacuum is maintained for at least 1 hour.

3 Should you fail to reach the target vacuum within 2 hours or

maintain the vacuum for 1 hour, the system may contain too much moisture. In that case, break the vacuum by pressurising with nitrogen gas to a gauge pressure of 0.05 MPa (0.5 bar) and repeat steps 1 to 3 until all moisture has been removed.

4 Depending on whether you want to immediately charge

refrigerant through the refrigerant charge port or first pre-charge a portion of refrigerant through the liquid line, either open the outdoor unit stop valves, or keep them closed. See "5.6.3To

charge refrigerant"on page12 for more information.

5.5 To insulate the refrigerant piping

After finishing the leak test and vacuum drying, the piping must be insulated. Take into account the following points:

▪ Make sure to insulate the connection piping and refrigerant branch

kits entirely.

▪ Be sure to insulate the liquid and gas piping (for all units).

▪ Use heat resistant polyethylene foam which can withstand a

temperature of 70°C for liquid piping and polyethylene foam which can withstand a temperature of 120°C for gas piping.

▪ Reinforce the insulation on the refrigerant piping according to the

installation environment.

Ambient

temperature

≤30°C 75% to 80% RH 15mm >30°C ≥80% RH 20mm

Humidity Minimum thickness

5.4.4 To perform a leak test

The leak test must satisfy the specifications of EN378‑2.

To check for leaks: Vacuum leak test

1 Evacuate the system from the liquid and gas piping to

–⁠100.7kPa (–⁠1.007bar/5Torr) for more than 2 hours.

2 Once reached, turn off the vacuum pump and check that the

pressure does not rise for at least 1 minute.

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

Condensation might form on the surface of the insulation.

▪ If there is a possibility that condensation on the stop valve might

drip down into the indoor unit through gaps in the insulation and piping because the outdoor unit is located higher than the indoor unit, this must be prevented by sealing up the connections. See below figure.

Installation and operation manual

5 Installation

p<p

b c e

A B

a Insulation material

b Caulking etc.

5.6 Charging refrigerant

5.6.1 Precautions when charging refrigerant

WARNING

▪ Only use R410A as refrigerant. Other substances may

cause explosions and accidents.

▪ R410A contains fluorinated greenhouse gases. Its

global warming potential (GWP) value is 2087.5. Do NOT vent these gases into the atmosphere.

▪ When charging refrigerant, always use protective

gloves and safety glasses.

5.6.2 To determine the additional refrigerant amount

INFORMATION

For final charge adjustment in a test laboratory, contact your dealer.

Additional refrigerant to be charged=R (kg). R should be rounded off in units of 0.1 kg.

R=[(X1×Ø9.5)×0.059+(X2×Ø6.4)×0.022]

=Total length (m) of liquid piping size at Øa

1...2

INFORMATION

Piping length is considered the distance from the outdoor unit to the farthest indoor unit.

When using metric piping, please take into account following table concerning the weight factor to be allocated. It should be substituted in the formula for R.

Inch piping Metric piping

Size (Ø) (mm) Weight factor Size (Ø) (mm) Weight factor

6.4 0.022 6 0.018

9.5 0.059 10 0.065

Installation and operation manual

NOTICE

If the power of some units is turned off, the charging procedure cannot be finished properly.

NOTICE

Be sure to turn on the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor.

NOTICE

If operation is performed within 12 minutes after the indoor and outdoor units are turned on, the compressor will not operate before the communication is established in a correct way between outdoor unit(s) and indoor units.

NOTICE

Before starting charging procedures, check if the 7‑LEDs display is as normal (see "6.1.4To access mode 1 or 2"on

page 16), and there is no malfunction code on the user

interface of the indoor unit. If a malfunction code is present, see "8.1 Solving problems based on error

codes"on page21.

NOTICE

Make sure all connected indoor units are recognised (setting [1‑5]).

NOTICE

Close the front panel before any refrigerant charge operation is executed. Without the front panel attached the unit cannot judge correctly whether it is operating properly or not.

NOTICE

In case of maintenance and the system (outdoor unit+field piping+indoor units) does not contain any refrigerant any more (e.g., after refrigerant reclaim operation), the unit has to be charged with its original amount of refrigerant (refer to the nameplate on the unit) and the determined additional refrigerant amount.

5.6.3 To charge refrigerant

To speed up the refrigerant charging process, it is in case of larger systems recommended to first pre-charge a portion of refrigerant through the liquid line before proceeding with the manual charging. It can be skipped, but charging will take longer then.

Pre-charging refrigerant

Pre-charging can be done without compressor operation, by connecting the refrigerant bottle to the service port of the liquid stop valve.

1 Connect as shown. Make sure that all outdoor unit stop valves,

as well as valve A are closed.

a Pressure reducing valve b Nitrogen c Weighing scales d Refrigerant R410A tank (siphon system) e Vacuum pump

f Liquid line stop valve

g Gas line stop valve A Valve A B Valve B C Valve C

2 Open valves C and B. 3 Pre‑charge refrigerant until the determined additional refrigerant

amount is reached or pre‑charging is not possible anymore, and then close valves C and B.

4 Do one of the following:

If Then

The determined additional refrigerant amount is reached

Disconnect the manifold from the liquid line.

You do not have to perform the "Charging refrigerant (in manual additional refrigerant charge mode)" instructions.

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VRV IV-S system air conditioner

4P399985-1D – 2016.03

5 Installation

p<p

R410A

a c

Contains fluorinated greenhouse gases

tCO2eq

GWP × kg

1000

= =

GWP: XXX

RXXX

d e

If Then

Too much refrigerant is

charged

Recover refrigerant.

Disconnect the manifold from the liquid line.

You do not have to perform the "Charging refrigerant (in manual additional refrigerant charge mode)" instructions.

The determined additional refrigerant amount is not reached yet

Disconnect the manifold from the liquid line.

Continue with the "Charging refrigerant (in manual additional refrigerant charge mode)" instructions.

Charging refrigerant (in manual additional refrigerant charge mode)

The remaining additional refrigerant charge can be charged by operating the outdoor unit by means of the manual additional refrigerant charge mode.

5 Connect as shown. Make sure valve A is closed.

10 Open valve A. 11 Charge refrigerant until the remaining determined additional

refrigerant amount is added, and then close valve A.

12 Press BS3 to stop the manual additional refrigerant charge

mode.

NOTICE

Make sure to open all stop valves after (pre-) charging the refrigerant.

Operating with the stop valves closed will damage the compressor.

NOTICE

After adding the refrigerant, do not forget to close the lid of the refrigerant charging port. The tightening torque for the lid is 11.5 to 13.9N•m.

5.6.4 Error codes when charging refrigerant

INFORMATION

If a malfunction occurs, the error code is displayed on the user interface of the indoor unit.

If a malfunction occurs, close valve A immediately. Confirm the malfunction code and take corresponding action, "8.1 Solving

problems based on error codes"on page21.

6 Open all outdoor unit stop valves. At this point, valve A must

remain closed!

7 Take all the precautions mentioned in "6 Configuration" on

page15 and "7Commissioning"on page20 into account.

8 Turn on the power of the indoor units and outdoor unit. 9 Activate setting [2‑20] to start the manual additional refrigerant

charge mode. For details, see "6.1.8Mode 2: Field settings"on

page18.

Result: The unit will start operation.

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

a Weighing scales b Refrigerant R410A tank (siphon system) c Vacuum pump d Refrigerant charge port A Valve A

NOTICE

The refrigerant charging port is connected to the piping inside the unit. The unit's internal piping is already factory charged with refrigerant, so be careful when connecting the charge hose.

INFORMATION

The manual refrigerant charge operation will automatically stop within 30 minutes. If charging is not completed after 30 minutes, perform the additional refrigerant charging operation again.

INFORMATION

▪ When a malfunction is detected during the procedure

(e.g., in case of closed stop valve), a malfunction code will be displayed. In that case, refer to "5.6.4 Error

codes when charging refrigerant" on page 13 and

solve the malfunction accordingly. Resetting the malfunction can be done by pushing BS3. You can restart the "Charging" instructions.

▪ Aborting the manual refrigerant charge is possible by

pushing BS3. The unit will stop and return to idle condition.

5.6.5 To fix the fluorinated greenhouse gases label

1 Fill in the label as follows:

a If a multilingual fluorinated greenhouse gases label is

delivered with the unit (see accessories), peel off the applicable language and stick it on top of a.

b Factory refrigerant charge: see unit name plate c Additional refrigerant amount charged d Total refrigerant charge e Greenhouse gas emissions of the total refrigerant charge

expressed as tonnes CO2-equivalent

f GWP = Global warming potential

NOTICE

In Europe, the greenhouse gas emissions of the total refrigerant charge in the system (expressed as tonnes CO2-equivalent) is used to determine the maintenance intervals. Follow the applicable legislation.

Formula to calculate the greenhouse gas emissions:

GWP value of the refrigerant × Total refrigerant charge [in kg] / 1000

2 Fix the label on the inside of the outdoor unit. There is a

dedicated place for it on the wiring diagram label.

5.7 Connecting the electrical wiring

5.7.1 Field wiring: Overview

Field wiring consists of power supply (always including earth) and indoor-outdoor communication (= transmission) wiring.

Example:

Installation and operation manual

5 Installation

b g g

fffh

eee

h h h

h h

F1 F2 F1 F2 F1 F2

X2M

TO OUT/DTO IN/D

TO IN/D UNIT

F1 F2 F1 F2

TO OUT/D UNIT

1~ 50 Hz

220-240 V

X1M

X2M

b a

a Field power supply (with earth leakage protector)

b Main switch

c Earth connection

d Outdoor unit

e Indoor unit

f User interface g Power supply wiring (sheathed cable) (230 V) h Transmission wiring (sheathed cable) (16 V)

Power supply 1~50Hz Earth wiring

5.7.2 Guidelines when knocking out knockout holes

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.

a Use the conductor of sheathed wire (2 wire) (no polarity) b Terminal board (field supply)

WARNING

You must use shielded wire and connect the earth to the transmission terminal (X2M).

a Earth

3 Connect the power supply as follows:

a Knockout hole

b Burr

c Sealant etc.

5.7.3 Guidelines when connecting the electrical wiring

Tightening torques

Wiring Screw size Tightening torque

(N•m)

Power supply wiring

M5 2.0~3.0

(power supply + shielded ground)

Transmission wiring M3.5 0.8~0.97

5.7.4 To connect the electrical wiring on the outdoor unit

NOTICE

1 Remove the service cover. 2 Connect the transmission wiring as follows:

Installation and operation manual

▪ Follow the wiring diagram (delivered with the unit,

located at the inside of the service cover).

▪ Make sure the electrical wiring does NOT obstruct

proper reattachment of the service cover.

a Earth leakage circuit breaker b Fuse c Power supply cable

4 Fix the cables (power supply and transmission wiring) with

cable ties.

a Cable tie

b Attachment plate X1M Power supply X2M Transmission wiring

5 Route the wiring through the frame and connect it to it.

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VRV IV-S system air conditioner

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6 Configuration

a b c d e

A B

a bc de

A1P

X1M

X2M

BS2

SET

BS1

MODE

BS3

RETURN

BS4

TEST

BS5

RESET

H1P H2P H3P H4P H5P H6P H7P

MODE

TEST:

L.N.O.P.

DEMAND

C/H SELECT

HWL:

IND

MASTER

SLAVE

H8P

MULTI

Routing through the frame

a Power supply cable b Transmission wiring cable

Connecting to the frame

When cables are routed from the unit, a protection sleeve for the conduits (PG insertions) can be inserted at the knockout hole.

When you do not use a wire conduit, protect the wires with vinyl tubes to prevent the edge of the knockout hole from cutting the wires.

A Inside of the outdoor unit B Outside of the outdoor unit a Wire b Bush c Nut d Frame e Hose

6 Reattach the service cover. 7 Connect an earth leakage circuit breaker and fuse to the power

supply line.

5.8 Finishing the outdoor unit installation

5.8.1 To finish the transmission wiring

After installing the transmission wires inside the unit, wrap them along with the on-site refrigerant pipes using finishing tape, as shown in figure below.

DANGER: RISK OF ELECTROCUTION

6.1 Making field settings

6.1.1 About making field settings

To configure the heat pump system, you must give input to the outdoor unit's main PCB (A1P). This involves the following field setting components:

▪ Push buttons to give input to the PCB

▪ A display to read feedback from the PCB

Field settings are defined by their mode, setting and value. Example: [2‑8]=4.

PC configurator

For VRV IV-S heat pump system it is alternatively possible to make several commissioning field settings through a personal computer interface (for this, option EKPCCAB is required). The installer can prepare the configuration (off-site) on PC and afterwards upload the configuration to the system.

See also: "6.1.9 To connect the PC configurator to the outdoor

unit"on page20.

Mode 1 and 2

Mode Description

Mode 1

(monitoring settings)

Mode 2

(field settings)

6.1.2 To access the field setting components

See "5.1.1To open the outdoor unit"on page8.

Mode1 can be used to monitor the current situation of the outdoor unit. Some field setting contents can be monitored as well.

Mode2 is used to change the field settings of the system. Consulting the current field setting value and changing the current field setting value is possible.

In general, normal operation can be resumed without special intervention after changing field settings.

Some field settings are used for special operation (e.g., 1 time operation, recovery/ vacuuming setting, manual adding refrigerant setting, etc.). In such a case, it is required to abort the special operation before normal operation can restart. It will be indicated in below explanations.

a Liquid pipe b Gas pipe c Insulator d Transmission wiring (F1/F2) e Finishing tape

6 Configuration

INFORMATION

It is important that all information in this chapter is read sequentially by the installer and that the system is configured as applicable.

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

6.1.3 Field setting components

NOTICE

The DIP switch (DS1 on A1P) is not used. Do NOT change the factory setting.

The components to make field settings are as follows:

BS1~BS5 Push buttons H1P~H7P 7‑LEDs display

H8P LED for indication during initialisation

) OFF ( ) Flashing ( )

ON (

Installation and operation manual

6 Configuration

H1P

H2P H3P H4P H5P H6P H7P

- + + + + +

[

H1P

32 16 8 4 2 1]

+ + + + +0 0 8 0 0 0

+ + + + +0 0 0 4 0 0

10~12 min

BS1 [5 s]

BS1

BS1 [1×]

BS2 [X×]

BS3 [1×]

BS1 [1×]

Push buttons

Use the push buttons to make the field settings. Operate the push buttons with an insulated stick (such as a closed ball-point pen) to avoid touching of live parts.

BS1 MODE: For changing the set mode BS2 SET: For field setting BS3 RETURN: For field setting BS4 TEST: For test operation BS5 RESET: For resetting the address when the wiring is

changed or when an additional indoor unit is installed

7‑LEDs display

The display gives feedback about the field settings, which are defined as [Mode-Setting]=Value.

H1P Shows the mode

H2P~H7P Shows the settings and values, represented in binary code

Example:

Description

Default situation

(H1P OFF)

Mode 1

(H1P flashing)

Mode 2

(H1P ON)

Setting 8

(in mode 2)

(H2P~H7P = binary 8)

Value 4

(in mode 2)

(H2P~H7P = binary 4)

6.1.4 To access mode 1 or 2

After the units are turned ON, the display goes to its default situation. From there, you can access mode1 and mode2.

Initialisation: default situation

NOTICE

Be sure to turn on the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor.

Turn on the power supply of the outdoor unit and all indoor units. When the communication between indoor units and outdoor unit is established and normal, the display indication state will be as below (default situation when shipped from factory).

If the default situation is not displayed after 10~12 minutes, check the malfunction code on the indoor unit user interface. Solve the malfunction code accordingly. First, check the communication wiring.

Switching between modes

Use BS1 to switch between the default situation, mode 1 and mode2.

a Default situation (H1P OFF) b Mode 1 (H1P flashing) c Mode 2 (H1P ON)

BS1 Press BS1.

BS1 [5 s] Press BS1 for at least 5s.

INFORMATION

If you get confused in the middle of the process, press BS1 to return to the default situation.

6.1.5 To use mode 1

In mode 1 (and in default situation) you can read out some information.

Example: 7‑LEDs display – Default situation

You can read out the status of low noise operation as follows:

# Action Button/display

1 Make sure the LEDs are

showing the default situation.

(H1P OFF)

2 Check the status of LED

H6P.

Example: 7‑LEDs display – Mode1

You can read out setting [1‑5] (= the total number of connected indoor units) as follows:

# Action Button/display

1 Start from the default

situation.

2 Select mode 1.

H6P OFF: Unit is currently not operating under low noise restrictions.

H6P ON: Unit is currently operating under low noise restrictions.

Installation and operation manual

a Power ON

b Default situation

c LED indication when there is a malfunction

3 Select setting 5.

("X×" depends on the setting that you want to select.)

(= binary 5)

4 Display the value of setting 5.

(there are 8 indoor units connected)

(= binary 8)

5 Quit mode 1.

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VRV IV-S system air conditioner

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6 Configuration

BS1 [5 s]

BS2 [X×]

BS2 [X×]b

BS3 [1×]c

BS3 [1×]d

BS3 [1×]

BS1 [1×]

6.1.6 To use mode 2

In mode 2 you can make field settings to configure the system.

Example: 7‑LEDs display – Mode 2

You can change the value of setting [2‑8] (=Te target temperature during cooling operation) to 4 (=8°C) as follows:

# Action Button/display

1 Start from the default

situation.

2 Select mode 2.

3 Select setting 8.

("X×" depends on the setting that you want to select.)

4 Select value 4 (= 8°C).

a: Display the current value. b: Change to 4. ("X×"

depends on the current value, and the value that you want to select.)

c: Enter the value in the system.

d: Confirm. The system starts operating according to the setting.

5 Quit mode 2.

(= binary 8)

6.1.7 Mode 1 (and default situation): Monitoring settings

In mode 1 (and in default situation) you can read out some information.

7‑LEDs display – Default situation (H1P OFF)

You can read out the following information:

Value / Description

H6P Shows the status of low noise operation.

OFF

Unit is currently not operating under low noise restrictions.

Unit is currently operating under low noise restrictions.

Low noise operation reduces the sound generated by the unit compared to nominal operating conditions.

Low noise operation can be set in mode2. There are two methods to activate low noise operation of the outdoor unit system.

▪ The first method is to enable an automatic low noise

operation during night time by field setting. The unit will operate at the selected low noise level during the selected time frames.

▪ The second method is to enable low noise operation

based on an external input. For this operation an optional accessory is required.

Value / Description

H7P Shows the status of power consumption limitation operation.

OFF

Unit is currently not operating under power consumption limitations.

Unit is currently operating under power consumption limitation.

Power consumption limitation reduces the power consumption of the unit compared to nominal operating conditions.

Power consumption limitation can be set in mode2. There are two methods to activate power consumption limitation of the outdoor unit system.

▪ The first method is to enable a forced power consumption

limitation by field setting. The unit will always operate at the selected power consumption limitation.

▪ The second method is to enable power consumption

limitation based on an external input. For this operation an optional accessory is required.

7‑LEDs display – Mode1 (H1P flashing)

You can read out the following information:

(

Setting

[1‑5]

Shows the total number of connected indoor units.

[1‑14]

Shows the latest malfunction code.

[1‑15]

Shows the 2nd last malfunction code.

[1‑16]

Shows the 3rd last malfunction code.

)

Value / Description

It can be convenient to check if the total number of indoor units which are installed match the total number of indoor units which are recognised by the system. In case there is a mismatch, it is advised to check the communication wiring path between outdoor and indoor units (F1/F2 communication line).

When the latest malfunction codes were reset by accident on an indoor unit user interface, they can be checked again through this monitoring settings.

For the content or reason behind the malfunction code see

"8.1Solving problems based on error codes"on page21, where

most relevant malfunction codes are explained. Detailed information about malfunction codes can be consulted in the service manual of this unit.

To obtain more detailed information about the malfunction code, press BS2 up to 3 times.

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

Installation and operation manual

6 Configuration

6.1.8 Mode 2: Field settings

In mode 2 you can make field settings to configure the system. The LEDs give a binary representation of the setting/value number.

Setting

(= binary)

[2‑8]

Te target temperature during cooling operation.

(default)

[2‑9]

Tc target temperature during heating operation. (default)

[2‑12]

Enable the low noise function and/or power consumption limitation via external control adaptor (DTA104A61/62).

If the system needs to be running under low noise operation or under power consumption limitation conditions when an external signal is sent to the unit, this setting should be changed. This setting will only be effective when the optional external control adaptor (DTA104A61/62) is installed in the indoor unit.

[2‑18]

Fan high static pressure setting.

In order to increase the static pressure the outdoor unit fan is delivering, this setting should be activated. For details about this setting, see technical specifications.

[2‑20]

Manual additional refrigerant charge.

In order to add the additional refrigerant charge amount in a manual way (without automatic refrigerant charging functionality), following setting should be applied.

[2‑21]

Refrigerant recovery/vacuuming mode.

In order to achieve a free pathway to reclaim refrigerant out of the system or to remove residual substances or to vacuum the system it is necessary to apply a setting which will open required valves in the refrigerant circuit so the reclaim of refrigerant or vacuuming process can be done properly.

[2‑22]

Automatic low noise setting and level during night time.

By changing this setting, you activate the automatic low noise operation function of the unit and define the level of operation. Depending on the chosen level, the noise level will be lowered. The start and stop moments for this function are defined under setting [2‑26] and [2‑27].

(default)

Value

Description

6°C

Auto

8°C

9°C 10°C 11°C

Auto

46°C 43°C

Deactivated.

Activated.

Deactivated.

Activated.

Deactivated.

Activated.

To stop the manual additional refrigerant charge operation (when the required additional refrigerant amount is charged), push BS3. If this function was not aborted by pushing BS3, the unit will stop its operation after 30minutes. If 30minutes was not sufficient to add the needed refrigerant amount, the function can be reactivated by changing the field setting again.

Deactivated.

Activated.

To stop the refrigerant recovery/vacuuming mode, push BS1. If BS1 is not pushed, the system will remain in refrigerant recovery/ vacuuming mode.

Deactivated

Level 1 Level 3<Level 2<Level 1 Level 2 Level 3

Installation and operation manual

VRV IV-S system air conditioner

RXYSCQ4+5TMV1B

4P399985-1D – 2016.03

6 Configuration

Setting

(= binary)

[2‑25]

Low noise operation level via the external control adaptor.

If the system needs to be running under low noise operation conditions when an external signal is sent to the unit, this setting defines the level of low noise that will be applied.

This setting will only be effective when the optional external control adaptor (DTA104A61/62) is installed and the setting [2‑12] was activated.

[2‑26]

Low noise operation start time.

This setting is used in conjunction with setting [2‑22].

[2‑27]

Low noise operation stop time.

This setting is used in conjunction with setting [2‑22].

[2‑30]

Power consumption limitation level (step1) via the external control adaptor (DTA104A61/62).

If the system needs to be running under power consumption limitation conditions when an external signal is sent to the unit, this setting defines the level power consumption limitation that will be applied for step1. The level is according to the table.

[2‑31]

Power consumption limitation level (step2) via the external control adaptor (DTA104A61/62).

[2‑32]

Forced, all time, power consumption limitation operation (no external control adaptor is required to perform power consumption limitation).

If the system always needs to be running under power consumption limitation conditions, this setting activates and defines the level power consumption limitation that will be applied continuously. The level is according to the table.

[2‑38]

Type of indoor units

After changing this setting, you have to power OFF the system, wait for 20s, and then power ON again. If not, the setting will not be processed and malfunction codes might occur.

[2‑41]

Cooling comfort setting.

This setting is used in conjunction with setting [2‑8].

[2‑42]

Heating comfort setting.

This setting is used in conjunction with setting [2‑9].

Value

Description

Level 1 Level 3<Level 2<Level 1 Level 2

(default)

Level 3

20h00 22h00

(default)

24h00

6h00 7h00 8h00

(default)

60% 70%

(default)

80%

30% 40%

(default)

50%

Function not active.

(default)

Follows [2‑30] setting. Follows [2‑31] setting.

VRVDX indoor units installed

(default)

RADX indoor units installed

Eco

Mild

(default)

Quick

Powerful

Eco Mild

(default)

Quick

Powerful

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

Installation and operation manual

7 Commissioning

345

H JS T

c (X41A)

A1P

6.1.9 To connect the PC configurator to the outdoor unit

a PC

b Cable (EKPCCAB)

c (X41A) Extension cable connected to X41A

A1P Outdoor unit main PCB

7 Commissioning

After installation and once the field settings are defined, the installer is obliged to verify correct operation. Therefore a test run must be performed according to the procedures described below.

7.1 Precautions when commissioning

CAUTION Do not perform the test operation while working on the

indoor units.

When performing the test operation, not only the outdoor unit, but the connected indoor unit will operate as well. Working on an indoor unit while performing a test operation is dangerous.

NOTICE

Be sure to turn on the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor.

During test operation, the outdoor unit and the indoor units will start up. Make sure that the preparations of all indoor units are finished (field piping, electrical wiring, air purge, ...). See installation manual of the indoor units for details.

7.2 Checklist before commissioning

After the installation of the unit, first check the following items. Once all below checks are fulfilled, the unit must be closed, only then can the unit be powered up.

You read the complete installation and operation instructions, as described in the installer and user

reference guide. Installation

Check that the unit is properly installed, to avoid abnormal noises and vibrations when starting up the unit.

Field wiring

Be sure that the field wiring has been carried out according to the instructions described in the chapter

"5.7 Connecting the electrical wiring" on page 13,

according to the wiring diagrams and according to the applicable legislation.

Power supply voltage

Check the power supply voltage on the local supply panel. The voltage must correspond to the voltage on the identification label of the unit.

Earth wiring

Be sure that the earth wires have been connected properly and that the earth terminals are tightened.

Insulation test of the main power circuit

Using a megatester for 500 V, check that the insulation resistance of 2 MΩ or more is attained by applying a voltage of 500VDC between power terminals and earth. Never use the megatester for the transmission wiring.

Fuses, circuit breakers, or protection devices

Check that the fuses, circuit breakers, or the locally installed protection devices are of the size and type specified in the chapter "4.3.1 Safety device

requirements"on page7. Be sure that neither a fuse nor a

protection device has been bypassed.

Internal wiring

Visually check the electrical component box and the inside of the unit on loose connections or damaged electrical components.

Pipe size and pipe insulation

Be sure that correct pipe sizes are installed and that the insulation work is properly executed.

Stop valves

Be sure that the stop valves are open on both liquid and gas side.

Damaged equipment

Check the inside of the unit on damaged components or squeezed pipes.

Refrigerant leak

Check the inside of the unit on refrigerant leakage. If there is a refrigerant leak, try to repair the leak. If the repair is unsuccessful, call your local dealer. Do not touch any refrigerant which has leaked out from refrigerant piping connections. This may result in frostbite.

Oil leak

Check the compressor for oil leakage. If there is an oil leak, try to repair the leak. If the repairing is unsuccessful, call your local dealer.

Air inlet/outlet

Check that the air inlet and outlet of the unit is not obstructed by paper sheets, cardboard, or any other material.

Additional refrigerant charge

The amount of refrigerant to be added to the unit shall be written on the included "Added refrigerant" plate and attached to the rear side of the front cover.

Installation date and field setting

Be sure to keep record of the installation date on the sticker on the rear of the front panel according to EN60335‑2‑40 and keep record of the contents of the field setting(s).

7.3 Checklist during commissioning

To perform a test run.

Installation and operation manual

RXYSCQ4+5TMV1B

VRV IV-S system air conditioner

4P399985-1D – 2016.03

8 Troubleshooting

7.3.1 About test run

The procedure below describes the test operation of the complete system. This operation checks and judges following items:

▪ Check of wrong wiring (communication check with indoor units).

▪ Check of the stop valves opening.

▪ Judgement of piping length.

Make sure to carry out the system test operation after the first installation. Otherwise, the malfunction code will be displayed on the user interface and normal operation or individual indoor unit test run cannot be carried out.

Abnormalities on indoor units cannot be checked for each unit separately. After the test operation is finished, check the indoor units one by one by performing a normal operation using the user interface. Refer to the indoor unit installation manual for more details concerning the individual test run.

INFORMATION

▪ It may take 10 minutes to achieve a uniform refrigerant

state before the compressor starts.

▪ During the test operation, the refrigerant running sound

or the magnetic sound of a solenoid valve may become loud and the display indication may change. These are not malfunctions.

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

1 Make sure all field settings you want are set; see "6.1 Making

field settings"on page15.

2 Turn ON the power to the outdoor unit and the connected

indoor units.

NOTICE

Be sure to turn on the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor.

3 Make sure the default (idle) situation is existing (H1P is OFF);

see "6.1.4To access mode 1 or 2"on page16. Push BS4 for 5 seconds or more. The unit will start test operation.

Result: The test operation is automatically carried out, the outdoor unit H2P flashes and the indication "Test operation" and "Under centralised control" will display on the user interface of indoor units.

Steps during the automatic system test run procedure:

INFORMATION

During the test operation, it is not possible to stop the unit operation from a user interface. To abort the operation, press BS3. The unit will stop after ±30 seconds.

4 Check the test operation results on the outdoor unit 7‑LEDs

display.

Completion Description

Normal completion

Abnormal completion

Refer to "7.3.3Correcting after abnormal

completion of the test run"on page21 to take

actions for correcting the abnormality. When the test operation is fully completed, normal operation will be possible after 5 minutes.

7.3.3 Correcting after abnormal completion of the test run

The test operation is only completed if there is no malfunction code displayed. In case of a displayed malfunction code, perform correcting actions as explained in the malfunction code table. Carry out the test operation again and confirm that the abnormality is properly corrected.

INFORMATION

If a malfunction occurs, the error code is displayed on the user interface of the indoor unit.

INFORMATION

Refer to the installation manual of the indoor unit for other detailed malfunction codes related to indoor units.

7.3.4 Operating the unit

Once the unit is installed and test operation of outdoor unit and indoor units is finished, the operation of the system can start.

For operating the indoor unit, the user interface of the indoor unit should be switched ON. Refer to the indoor unit operation manual for more details.

8 Troubleshooting

Step Description

Control before start up (pressure equalisation)

Cooling start up control Cooling stable condition Communication check Stop valve check Pipe length check Pump down operation Unit stop

8.1 Solving problems based on error codes

In case of a displayed malfunction code, perform correcting actions as explained in the malfunction code table.

After correcting the abnormality, press BS3 to reset the malfunction code and retry operation.

INFORMATION

If a malfunction occurs, the error code is displayed on the user interface of the indoor unit.

8.1.1 Error codes: Overview

Main code Cause Solution

▪ The stop valve of an outdoor unit is left closed.

▪ Refrigerant overcharge

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

▪ Open the stop valve on both the gas and liquid side.

▪ Recalculate the required amount of refrigerant from the

piping length and correct the refrigerant charge level by recovering any excessive refrigerant with a refrigerant recovery machine.

Installation and operation manual

9 Technical data

Main code Cause Solution

▪ The stop valve of an outdoor unit is left closed.

▪ Insufficient refrigerant

Electronic expansion valve malfunction

(Y1E) - A1P (X21A)

(Y3E) - A1P (X22A) ▪ The stop valve of an outdoor unit is left closed.

▪ Insufficient refrigerant

Refrigerant overcharge Recalculate the required amount of refrigerant from the

Ambient temperature sensor malfunction (R1T) - A1P (X11A)

Discharge temperature sensor malfunction (R2T): open circuit / short circuit - A1P (X12A)

Suction temperature sensor malfunction

(R3T) - A1P (X12A)

(R5T) - A1P (X12A) Liquid temperature sensor (coil) malfunction (R4T) - A1P

(X12A) Liquid temperature sensor (after subcool HE) malfunction

(R7T) - A1P (X13A) Gas temperature sensor (after subcool HE) malfunction

(R6T) - A1P (X13A) High pressure sensor malfunction (S1NPH): open circuit /

short circuit - A1P (X17A) Low pressure sensor malfunction (S1NPL): open circuit /

short circuit - A1P (X18A) Transmission outdoor unit - inverter: INV1 / FAN1

transmission trouble INV1 unbalanced power supply voltage Check if power supply is within range. Insufficient supply voltage Check if the supply voltage is supplied properly. Malfunction code: System test run not yet executed (system

operation not possible) No power is supplied to the outdoor unit. Check if the power wiring for the outdoor unit is connected

Faulty wiring to Q1/Q2 Check Q1/Q2 wiring. System mismatch. Wrong type of indoor units combined

(R410A, R407C, RA, etc)

Indoor unit malfunction Improper type of indoor units are connected. Check the type of indoor units that are currently connected.

Incorrect interconnections between units. Connect interconnections F1 and F2 of the connected BP

▪ The stop valve of an outdoor unit is left closed.

▪ The piping and wiring of the specified indoor unit are not

connected correctly to the outdoor unit.

▪ Open the stop valve on both the gas and liquid side.

▪ Check if the additional refrigerant charge has been

finished correctly. Recalculate the required amount of refrigerant from the piping length and add an adequate amount of refrigerant.

Check connection on PCB or actuator.

▪ Open the stop valve on both the gas and liquid side.

▪ Check if the additional refrigerant charge has been

finished correctly. Recalculate the required amount of refrigerant from the piping length and add an adequate amount of refrigerant.

piping length and correct the refrigerant charge level by recovering any excessive refrigerant with a refrigerant recovery machine.

Check connection on PCB or actuator.

Check connection.

Execute system test run.

correctly.

Check if other indoor units have malfunction and confirm indoor unit mix is allowed.

If they are not proper, replace them with proper ones.

unit correctly to the outdoor unit's PCB (TO BP UNIT). Make sure that the communication with the BP unit is enabled.

▪ Open the stop valve on both the gas and liquid side.

▪ Confirm that the piping and wiring of the specified indoor

unit are connected correctly to the outdoor unit.

9 Technical data

Latest information can be found in the technical engineering data.

Installation and operation manual

VRV IV-S system air conditioner

RXYSCQ4+5TMV1B

4P399985-1D – 2016.03

9 Technical data

R1T

R4T

M1F

R2T

R5T

R7T

R3T

R6T

S1NPL

S1PH

S1NPH

M1C

INV

Y1E

Y3E

Y1S

l c

9.1 Service space: Outdoor unit

When mounting units side by side, the piping route must be to the front or downwards. In this case the piping route to the side is not possible.

Single unit (

) | Single row of units ( )

See figure 1 on the inside of the front cover.

A,B,C,D Obstacles (walls/baffle plates)

E Obstacle (roof)

a,b,c,d,e Minimum service space between the unit and obstacles A, B, C, D and E

eBMaximum distance between the unit and the edge of obstacle E, in the direction of obstacle B eDMaximum distance between the unit and the edge of obstacle E, in the direction of obstacle D

HUHeight of the unit

HB,HDHeight of obstacles B and D

1 Seal the bottom of the installation frame to prevent discharged air from flowing back to the suction side through the bottom of the unit. 2 Maximum two units can be installed.

Not allowed

Multiple rows of units (

)

See figure 2 on the inside of the front cover.

Stacked units (max. 2 levels) (

)

See figure 3 on the inside of the front cover.

A1=>A2 (A1) If there is danger of drainage dripping and freezing between the upper and lower units…

B1=>B2 (B1) If there is no danger of drainage dripping and freezing between the upper and lower units…

(A2) Then install a roof between the upper and lower units. Install the upper unit high enough above the lower unit to prevent ice buildup at the upper unit's bottom plate.

(B2) Then it is not required to install a roof, but seal the gap between the upper and lower units to prevent discharged air from flowing back to the suction side through the bottom of the unit.

9.2 Piping diagram: Outdoor unit

a Stop valve (gas) b Stop valve (liquid) c Filter (3×) d Subcool heat exchanger e Heat sink PCB

f Pressure regulating valve g Heat exchanger h Service port (high pressure)

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

i Muffler

j Check valve

k Compressor accumulator

l Capillary tube

m Service port (refrigerant charge)

n Accumulator

M1C Compressor

M1F Fan motor R1T Thermistor (air) R2T Thermistor (discharge)

Installation and operation manual

9 Technical data

R3T Thermistor (suction 1) R4T Thermistor (heat exchanger de-icer) R5T Thermistor (suction 2) R6T Thermistor (subcool heat exchanger) R7T Thermistor (liquid pipe)

S1NPH High pressure sensor

S1NPL Low pressure sensor

9.3 Wiring diagram: Outdoor unit

The wiring diagram is delivered with the unit, located at the inside of the service cover.

Notes for RXYSCQ4+5:

1 This wiring diagram applies only to the outdoor unit. 2 Symbols (see below). 3 Refer to the installation manual for how to use the BS1~BS5

and DS1+DS2 switches. 4 When operating, do not short-circuit protective device S1PH. 5 Colours (see below). 6 Refer to the installation manual for connection wiring to

INDOOR-OUTDOOR transmission F1-F2. 7 When using the central control system, connect OUTDOOR-

OUTDOOR transmission F1-F2.

Symbols:

L Live N Neutral

Field wiring Terminal strip Connector Fixed connector Movable connector Protective earth (screw)

Noiseless earth

Terminal

Colours:

BLK Black BLU Blue BRN Brown GRN Green ORG Orange RED Red WHT White YLW Yellow

Legend for wiring diagram RXYSCQ4+5:

A1P Printed circuit board (main) A2P Printed circuit board BS1~BS5 Push button switch C1 Capacitor DS1 DIP switch

S1PH High pressure switch

Y1E Electronic expansion valve (main) Y3E Electronic expansion valve (subcool heat exchanger) Y1S Solenoid valve (4‑way valve)

Heating Cooling

E1HC Crankcase heater F1U Fuse F3U, F4U Fuse (T 6.3A / 250V) F6U Fuse (T 5.0A / 250V) H1P~H8P Light‑emitting diode (service monitor orange)

H2P:

▪ Prepare, test: Flickering

▪ Malfunction detection: Light up HAP Light-emitting diode (service monitor is green) HBP Light-emitting diode (service monitor is green) K11M Magnetic contactor K1R Magnetic relay (Y1S) K4R Magnetic relay (E1HC) K10R Magnetic relay L1R~L3R Reactor M1C Motor (compressor) M1F Motor (fan) PS Switching power supply R1, R2 Resistor R1T Thermistor (air) R2T Thermistor (discharge) R3T Thermistor (suction 1) R4T Thermistor (heat exchanger de-icer) R5T Thermistor (suction 2) R6T Thermistor (subcool heat exchanger) R7T Thermistor (liquid pipe) FINTH Thermistor (fin) S1NPH High pressure sensor S1NPL Low pressure sensor S1PH High pressure switch V1R IGBT power module V2R Diode module V1T~V3T Insulated gate bipolar transistor (IGBT) V1D~V3D Diode X1M, X2M Terminal strip X37A Connector Y1E Electronic expansion valve (main) Y3E Electronic expansion valve (subcool heat exchanger) Y1S Solenoid valve (4‑way valve) Z1C~Z7C Noise filter (ferrite core) Z1F~Z5F Noise filter

Installation and operation manual

VRV IV-S system air conditioner

RXYSCQ4+5TMV1B

4P399985-1D – 2016.03

For the user

d d

c c

10 About the system

The indoor unit part of VRV IV-S heat pump system can be used for heating/cooling applications. The type of indoor unit which can be used depends on the outdoor units series.

NOTICE

Do not use the air conditioner for other purposes. In order to avoid any quality deterioration, do not use the unit for cooling precision instruments, food, plants, animals or works of art.

NOTICE

For future modifications or expansions of your system:

A full overview of allowable combinations (for future system extensions) is available in technical engineering data and should be consulted. Contact your installer to receive more information and professional advice.

INFORMATION

▪ Combination of VRVDX and RADX indoor units is not

allowed.

▪ Combination of RA DX and AHU indoor units is not

allowed.

▪ Combination of RADX and aircurtain indoor units is not

allowed.

Refer to the operation manual of the installed user interface.

12 Operation

12.1 Operation range

Use the system in the following temperature and humidity ranges for safe and effective operation.

Cooling Heating

Outdoor temperature

Indoor temperature

Indoor humidity ≤80%

(a) To avoid condensation and water dripping out of the unit. If

the temperature or the humidity is beyond these conditions, safety devices may be put in action and the air conditioner may not operate.

Above operation range is only valid in case direct expansion indoor units are connected to the VRV IV-S system.

Special operation ranges are valid in case of using AHU. They can be found in the installation/operation manual of the dedicated unit. Latest information can be found in the technical engineering data.

–5~46°CDB –20~21°CDB

–20~15.5°CWB

21~32°CDB

14~25°CWB

15~27°CDB

(a)

10.1 System layout

12.2 Operating the system

12.2.1 About operating the system

▪ Operation procedure varies according to the combination of

outdoor unit and user interface.

▪ To protect the unit, turn on the main power switch 6 hours before

operation.

▪ If the main power supply is turned off during operation, operation

will restart automatically after the power turns back on again.

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) e BP box (required to connect Residential Air (RA) or Sky Air

(SA) direct expansion (DX) indoor units)

f Residential Air (RA) direct expansion (DX) indoor units

g User interface (wireless, dedicated depending on indoor

unit type)

11 User interface

CAUTION

Never touch the internal parts of the controller.

Do not remove the front panel. Some parts inside are dangerous to touch and appliance problems may happen. For checking and adjusting the internal parts, contact your dealer.

This operation manual will give a non-exhaustive overview of the main functions of the system.

Detailed information on required actions to achieve certain functions can be found in the dedicated installation and operation manual of the indoor unit.

12.2.2 About cooling, heating, fan only, and automatic operation

▪ Changeover cannot be made with a user interface whose display

shows installation and operation manual of the user interface).

▪ When the display

flashes, refer to "12.5.1 About setting the master user

interface"on page26.

▪ The fan may keep on running for about 1 minute after the heating

operation stops.

▪ The air flow rate may adjust itself depending on the room

temperature or the fan may stop immediately. This is not a malfunction.

"change-over under centralised control" (refer to

"change-over under centralised control"

12.2.3 About the heating operation

It may take longer to reach the set temperature for general heating operation than for cooling operation.

The following operation is performed in order to prevent the heating capacity from dropping or cold air from blowing.

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

Installation and operation manual

12 Operation

d d

c c

Defrost operation

In heating operation, freezing of the outdoor unit's air cooled coil increases over time, restricting the energy transfer to the outdoor unit's coil. Heating capability decreases and the system needs to go into defrost operation to be able to deliver enough heat to the indoor units.

The indoor unit will stop fan operation, the refrigerant cycle will reverse and energy from inside the building will be used to defrost the outdoor unit coil.

The indoor unit will indicate defrost operation on the displays

Hot start

In order to prevent cold air from blowing out of an indoor unit at the start of heating operation, the indoor fan is automatically stopped.

The display of the user interface shows . It may take some time before the fan starts. This is not a malfunction.

12.2.4 To operate the system

1 Press the operation mode selector button on the user interface

several times and select the operation mode of your choice.

Cooling operation

Heating operation

Fan only operation

2 Press the ON/OFF button on the user interface.

Result: The operation lamp lights up and the system starts

operating.

12.3 Using the dry program

12.4.1 About the air flow flap

Double flow+multi-flow units

Corner units

Ceiling suspended units

Wall-mounted units

For the following conditions, a micro computer controls the air flow direction which may be different from the display.

Cooling Heating

▪ When the room temperature is

lower than the set temperature.

▪ When operating continuously at horizontal air flow direction.

▪ When continuous operation with downward air flow is performed

at the time of cooling with a ceiling-suspended or a wall-mounted unit, the micro computer may control the flow direction, and then the user interface indication will also change.

The air flow direction can be adjusted in one of the following ways:

▪ The air flow flap itself adjusts its position.

▪ The air flow direction can be fixed by the user.

▪ Automatic

and desired position .

▪ When starting operation.

▪ When the room temperature is

higher than the set temperature.

▪ At defrost operation.

12.3.1 About the dry program

▪ The function of this program is to decrease the humidity in your

room with minimal temperature decrease (minimal room cooling).

▪ The micro computer automatically determines temperature and

fan speed (cannot be set by the user interface).

▪ The system does not go into operation if the room temperature is

low (<20°C).

12.3.2 To use the dry program

To start

1 Press the operation mode selector button on the user interface

several times and select

2 Press the ON/OFF button of the user interface.

Result: The operation lamp lights up and the system starts

operating.

3 Press the air flow direction adjust button (only for double-flow,

multi-flow, corner, ceiling-suspended and wall-mounted). Refer to "12.4Adjusting the air flow direction"on page26 for details.

To stop

4 Press the ON/OFF button on the user interface once again.

Result: The operation lamp goes out and the system stops

operating.

NOTICE

Do not turn off power immediately after the unit stops, but wait for at least 5 minutes.

12.4 Adjusting the air flow direction

Refer to the operation manual of the user interface.

(program dry operation).

WARNING

Never touch the air outlet or the horizontal blades while the swing flap is in operation. Fingers may become caught or the unit may break down.

NOTICE

▪ The movable limit of the flap is changeable. Contact

your dealer for details. (only for double-flow, multi-flow, corner, ceiling-suspended and wall-mounted).

▪ Avoid operating in the horizontal direction

cause dew or dust to settle on the ceiling or flap.

. It may

12.5 Setting the master user interface

12.5.1 About setting the master user interface

(SA) direct expansion (DX) indoor units)

f Residential Air (RA) direct expansion (DX) indoor units

g User interface (wireless, dedicated depending on indoor

unit type)

Installation and operation manual

VRV IV-S system air conditioner

RXYSCQ4+5TMV1B

4P399985-1D – 2016.03

13 Maintenance and service

When the system is installed as shown in the figure above, it is necessary to designate one of the user interfaces as the master user interface.

The displays of slave user interfaces show (change-over under centralised control) and slave user interfaces automatically follow the operation mode directed by the master user interface.

Only the master user interface can select heating or cooling mode.

12.5.2 To designate the master user interface (VRV DX)

In case only VRV DX indoor units are connected to the VRV IV-S system:

1 Press the operation mode selector button of the current master

user interface for 4 seconds. In case this procedure was not yet performed, the procedure can be executed on the first user interface operated.

Result: The display showing (change-over under centralised control) of all slave user interfaces connected to the same outdoor unit flashes.

2 Press the operation mode selector button of the controller that

you wish to designate as the master user interface. Result: Designation is completed. This user interface is

designated as the master user interface and the display showing (change-over under centralised control) vanishes. The displays of other user interfaces show

(change-over under centralised control).

12.5.3 To designate the master user interface (RA DX)

In case only RA DX indoor units are connected to the VRV IV-S system:

1 Stop all indoor units. 2 When the system is not operating (all indoor units thermo OFF),

you can define the master RADX indoor unit by addressing that unit with infrared user interface (instruct thermo ON in desired mode).

The only way to change the master unit is by repeating the previous procedure. A cool/heat switchover (or opposite) is only possible by changing the operation mode of the defined master indoor unit.

13 Maintenance and service

NOTICE

Never inspect or service the unit by yourself. Ask a qualified service person to perform this work.

WARNING

Never replace a fuse with a fuse of a wrong ampere ratings or other wires when a fuse blows out. Use of wire or copper wire may cause the unit to break down or cause a fire.

CAUTION

Do not insert fingers, rods or other objects into the air inlet or outlet. Do not remove the fan guard. When the fan is rotating at high speed, it will cause injury.

CAUTION

After a long use, check the unit stand and fitting for damage. If damaged, the unit may fall and result in injury.

NOTICE

Do not wipe the controller operation panel with benzine, thinner, chemical dust cloth, etc. The panel may get discoloured or the coating peeled off. If it is heavily dirty, soak a cloth in water-diluted neutral detergent, squeeze it well and wipe the panel clean. Wipe it with another dry cloth.

13.1 About the refrigerant

This product contains fluorinated greenhouse gases. Do NOT vent gases into the atmosphere.

Refrigerant type: R410A

Global warming potential (GWP) value: 2087.5

NOTICE

Formula to calculate the greenhouse gas emissions:

GWP value of the refrigerant × Total refrigerant charge [in kg] / 1000

Please contact your installer for more information.

WARNING

The refrigerant in the air conditioner is safe and normally does not leak. If the refrigerant leaks in the room, contact with a fire of a burner, a heater or a cooker may result in a harmful gas.

Turn off any combustible heating devices, ventilate the room and contact the dealer where you purchased the unit.

Do not use the air conditioner until a service person confirms that the portion where the refrigerant leaks is repaired.

13.2 After-sales service and warranty

13.2.1 Warranty period

▪ This product includes a warranty card that was filled in by the

dealer at the time of installation. The completed card has to be checked by the customer and stored carefully.

▪ If repairs to the air conditioner are necessary within the warranty

period, contact your dealer and keep the warranty card at hand.

13.2.2 Recommended maintenance and inspection

Since dust collects when using the unit for several years, performance of the unit will deteriorate to some extent. As taking apart and cleaning interiors of units requires technical expertise and in order to ensure the best possible maintenance of your units, we recommend to enter into a maintenance and inspection contract on top of normal maintenance activities. Our network of dealers has access to a permanent stock of essential components in order to keep your air conditioner in operation as long as possible. Contact your dealer for more information.

When asking your dealer for an intervention, always state:

▪ The complete model name of the air conditioner.

▪ The manufacturing number (stated on the nameplate of the unit).

▪ The installation date.

▪ The symptoms or malfunction, and details of the defect.

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

Installation and operation manual

14 Troubleshooting

WARNING

▪ Do not modify, disassemble, remove, reinstall or repair

the unit yourself as incorrect dismantling or installation may cause an electric shock or fire. Contact your dealer.

▪ In case of accidental refrigerant leaks, make sure there

are no naked flames. The refrigerant itself is entirely safe, non-toxic and non-combustible, but it will generate toxic gas when it accidentally leaks into a room where combustible air from fan heaters, gas cookers, etc. is present. Always have qualified service personnel confirm that the point of leakage has been repaired or corrected before resuming operation.

14 Troubleshooting

If one of the following malfunctions occur, take the measures shown below and contact your dealer.

WARNING Stop operation and shut off the power if anything

unusual occurs (burning smells etc.).

Leaving the unit running under such circumstances may cause breakage, electric shock or fire. Contact your dealer.

The system must be repaired by a qualified service person:

Malfunction Measure

If a safety device such as a fuse, a breaker or an earth leakage breaker frequently actuates or the ON/OFF switch does not properly work.

If water leaks from the unit. Stop the operation. The operation switch does not work

well. If the user interface display indicates the

unit number, the operation lamp flashes and the malfunction code appears.

If the system does not properly operate except for the above mentioned cases and none of the above mentioned malfunctions is evident, investigate the system according to the following procedures.

Malfunction Measure

If the system does not operate at all.

If the system goes into fan only operation, but as soon as it goes into heating or cooling operation, the system stops.

▪ Check if there is no power failure. Wait

until power is restored. If power failure occurs during operation, the system automatically restarts immediately after the power supply is recovered.

▪ Check if no fuse has blown or breaker

has worked. Change the fuse or reset the breaker if necessary.

▪ Check if air inlet or outlet of outdoor or

indoor unit is not blocked by obstacles. Remove any obstacle and make it wellventilated.

▪ Check if the user interface display shows

(time to clean the air filter). (Refer to

"13 Maintenance and service" on page27 and "Maintenance" in the indoor

unit manual.)

Turn off the main power switch.

Turn off the power.

Notify your installer and report the malfunction code.

Malfunction Measure

The system operates but cooling or heating is insufficient.

If after checking all above items, it is impossible to fix the problem yourself, contact your installer and state the symptoms, the complete model name of the air conditioner (with manufacturing number if possible) and the installation date (possibly listed on the warranty card).

▪ Check if air inlet or outlet of outdoor or

indoor unit is not blocked by obstacles. Remove any obstacle and make it wellventilated.

▪ Check if the air filter is not clogged (refer

to "Maintenance" in the indoor unit manual).

▪ Check the temperature setting.

▪ Check the fan speed setting on your user

interface.

▪ Check for open doors or windows. Shut

doors and windows to prevent wind from coming in.

▪ Check if there are too many occupants in

the room during cooling operation. Check if the heat source of the room is excessive.

▪ Check if direct sunlight enters the room.

Use curtains or blinds.

▪ Check if the air flow angle is proper.

14.1 Error codes: Overview

In case a malfunction code appears on the indoor unit user interface display, contact your installer and inform the malfunction code, the unit type, and serial number (you can find this information on the nameplate of the unit).

For your reference, a list with malfunction codes is provided. You can, depending on the level of the malfunction code, reset the code by pushing the ON/OFF button. If not, ask your installer for advice.

Main code Contents

External protection device was activated EEPROM failure (indoor) Drain system malfunction (indoor) Fan motor malfunction (indoor) Swing flap motor malfunction (indoor) Expansion valve malfunction (indoor) Drain malfunction (indoor unit) Filter dust chamber malfunction (indoor) Capacity setting malfunction (indoor) Transmission malfunction between main PCB and sub

PCB (indoor) Heat exchanger thermistor malfunction (indoor; liquid) Heat exchanger thermistor malfunction (indoor; gas) Suction air thermistor malfunction (indoor) Discharge air thermistor malfunction (indoor) Movement detector or floor temperature sensor

malfunction (indoor) User interface thermistor malfunction (indoor) PCB malfunction (outdoor) High pressure switch was activated Low pressure malfunction (outdoor) Compressor lock detection (outdoor) Fan motor malfunction (outdoor)

Installation and operation manual

VRV IV-S system air conditioner

RXYSCQ4+5TMV1B

4P399985-1D – 2016.03

14 Troubleshooting

Main code Contents

Electronic expansion valve malfunction (outdoor) Discharge temperature malfunction (outdoor) Abnormal suction temperature (outdoor) Refrigerant overcharge detection High pressure switch malfunction Low pressure switch malfunction Fan motor trouble (outdoor) Ambient temperature sensor malfunction (outdoor) Pressure sensor malfunction Current sensor malfunction Discharge temperature sensor malfunction (outdoor) Heat exchanger gas temperature sensor malfunction

(outdoor) Suction temperature sensor malfunction (outdoor) De-icing temperature sensor malfunction (outdoor) Liquid temperature sensor (after subcool HE)

malfunction (outdoor) Gas temperature sensor (after subcool HE)

malfunction (outdoor) High pressure sensor malfunction (S1NPH) Low pressure sensor malfunction (S1NPL) INV PCB abnormal Fin temperature abnormal Inverter PCB faulty Compressor over current detected Compressor lock (startup) Transmission outdoor unit - inverter: INV transmission

trouble INV unbalanced power supply voltage Fin thermistor malfunction Capacity setting malfunction (outdoor) Abnormal low pressure drop, faulty expansion valve INV voltage power shortage System test run not yet executed Faulty wiring indoor/outdoor Abnormal user interface - indoor communication Faulty wiring to outdoor/outdoor Abnormal main-sub user interface communication System mismatch. Wrong type of indoor units

combined. Indoor unit malfunction. Connection malfunction over indoor units or type

mismatch Centralised address duplication Malfunction in communication centralised control

device - indoor unit Auto address malfunction (inconsistency) Auto address malfunction (inconsistency)

14.2 Symptoms that are not air conditioner troubles

Following symptoms are not air conditioner troubles:

14.2.1 Symptom: The system does not operate

▪ The air conditioner does not start immediately after the ON/OFF

button on the user interface is pressed. If the operation lamp lights, the system is in normal condition. To prevent overloading of

the compressor motor, the air conditioner starts 5 minutes after it is turned ON again in case it was turned OFF just before. The same starting delay occurs after the operation mode selector button was used.

▪ If "Under Centralized Control" is displayed on the user interface,

pressing the operation button causes the display to blink for a few seconds. The blinking display indicates that the user interface cannot be used.

▪ The system does not start immediately after the power supply is

turned on. Wait one minute until the micro computer is prepared for operation.

14.2.2 Symptom: Fan operation is possible, but cooling and heating do not work

Immediately after the power is turned on. The micro computer is getting ready to operate and is performing a communication check with all indoor units. Please wait 12 minutes (max.) till this process is finished.

14.2.3 Symptom: The fan strength does not correspond to the setting

The fan speed does not change even if the fan speed adjustment button in pressed. During heating operation, when the room temperature reaches the set temperature, the outdoor unit goes off and the indoor unit changes to whisper fan speed. This is to prevent cold air blowing directly on occupants of the room. The fan speed will not change even when another indoor unit is in heating operation, if the button is pressed.

14.2.4 Symptom: The fan direction does not correspond to the setting

The fan direction does not correspond with the user interface display. The fan direction does not swing. This is because the unit is being controlled by the micro computer.

14.2.5 Symptom: White mist comes out of a unit (Indoor unit)

▪ When humidity is high during cooling operation. If the interior of an

indoor unit is extremely contaminated, the temperature distribution inside a room becomes uneven. It is necessary to clean the interior of the indoor unit. Ask your dealer for details on cleaning the unit. This operation requires a qualified service person.

▪ Immediately after the cooling operation stops and if the room

temperature and humidity are low. This is because warm refrigerant gas flows back into the indoor unit and generates steam.

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

When the system is changed over to heating operation after defrost operation. Moisture generated by defrost becomes steam and is exhausted.

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

This is because the user interface is intercepting noise from electric appliances other than the air conditioner. The noise prevents communication between the units, causing them to stop. Operation automatically restarts when the noise ceases.

RXYSCQ4+5TMV1B VRV IV-S system air conditioner 4P399985-1D – 2016.03

Installation and operation manual

15 Relocation

14.2.8 Symptom: Noise of air conditioners (Indoor unit)

▪ A "zeen" sound is heard immediately after the power supply is

turned on. The electronic expansion valve inside an indoor unit starts working and makes the noise. Its volume will reduce in about one minute.

▪ A continuous low "shah" sound is heard when the system is in

cooling operation or at a stop. When the drain pump (optional accessories) is in operation, this noise is heard.

▪ A "pishi-pishi" squeaking sound is heard when the system stops

after heating operation. Expansion and contraction of plastic parts caused by temperature change make this noise.

▪ A low "sah", "choro-choro" sound is heard while the indoor unit is

stopped. When another indoor unit is in operation, this noise is heard. In order to prevent oil and refrigerant from remaining in the system, a small amount of refrigerant is kept flowing.

14.2.9 Symptom: Noise of air conditioners (Indoor unit, outdoor unit)

▪ A continuous low hissing sound is heard when the system is in

cooling or defrost operation. This is the sound of refrigerant gas flowing through both indoor and outdoor units.

▪ A hissing sound which is heard at the start or immediately after

stopping operation or defrost operation. This is the noise of refrigerant caused by flow stop or flow change.

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

Several different indoor units are being run on the same system. When another unit is running, some refrigerant will still flow through the unit.

15 Relocation

Contact your dealer for removing and reinstalling the total unit. Moving units requires technical expertise.

16 Disposal

This unit uses hydrofluorocarbon. Contact your dealer when discarding this unit. It is required by law to collect, transport and discard the refrigerant in accordance with the "hydrofluorocarbon collection and destruction" regulations.

14.2.10 Symptom: Noise of air conditioners (Outdoor unit)

When the tone of operating noise changes. This noise is caused by the change of frequency.

14.2.11 Symptom: Dust comes out of the unit

When the unit is used for the first time in a long time. This is because dust has gotten into the unit.

14.2.12 Symptom: The units can give off odours

The unit can absorb the smell of rooms, furniture, cigarettes, etc., and then emit it again.

14.2.13 Symptom: The outdoor unit fan does not spin

During operation. The speed of the fan is controlled in order to optimise product operation.

14.2.14 Symptom: The display shows "88"

This is the case immediately after the main power supply switch is turned on and means that the user interface is in normal condition. This continues for one minute.

14.2.15 Symptom: The compressor in the outdoor unit does not stop after a short heating operation

This is to prevent refrigerant from remaining in the compressor. The unit will stop after 5 to 10 minutes.

14.2.16 Symptom: The inside of an outdoor unit is warm even when the unit has stopped

This is because the crankcase heater is warming the compressor so that the compressor can start smoothly.

Installation and operation manual

VRV IV-S system air conditioner

RXYSCQ4+5TMV1B

4P399985-1D – 2016.03

4P399985-1D 2016.03

Daikin RXYSCQ4TMV1B, RXYSCQ5TMV1B user guide manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

1 About the documentation

1.1 About this document

For the installer

2 About the box

2.1 Outdoor unit

2.1.1 To remove the accessories from the outdoor unit

3 About the units and options

3.1 About the outdoor unit

3.2 System layout

4 Preparation

4.1 Preparing installation site

4.1.1 Installation site requirements of the outdoor unit

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

4.2 Preparing refrigerant piping

4.2.1 Refrigerant piping requirements

4.2.2 Refrigerant piping material

4.2.3 To select the piping size

A: Piping between outdoor unit and (first) refrigerant branch kit

D: Piping between refrigerant branch kit and BP unit

E: Piping between BP unit and RA DX indoor unit

4.2.4 To select refrigerant branch kits

B: Piping between refrigerant branch kits

C: Piping between refrigerant branch kit and indoor unit

4.3 Preparing electrical wiring

4.3.1 Safety device requirements

5 Installation

5.1 Opening the units

5.1.1 To open the outdoor unit

5.2.2 To install the outdoor unit

5.2 Mounting the outdoor unit

5.2.1 To provide the installation structure

5.2.3 To provide drainage

5.2.4 To prevent the outdoor unit from falling over

To close the stop valve

To handle the stop valve cover

5.3 Connecting the refrigerant piping

5.3.1 Using the stop valve and service port

To handle the stop valve

To open the stop valve

To handle the service port

Tightening torques

5.3.2 To connect the refrigerant piping to the outdoor unit

5.4 Checking the refrigerant piping

5.4.1 About checking the refrigerant piping

5.4.2 Checking refrigerant piping: General guidelines

5.4.3 Checking refrigerant piping: Setup

To check for leaks: Pressure leak test

5.4.5 To perform vacuum drying

5.5 To insulate the refrigerant piping

5.4.4 To perform a leak test

To check for leaks: Vacuum leak test

5.6 Charging refrigerant

5.6.1 Precautions when charging refrigerant

5.6.2 To determine the additional refrigerant amount

5.6.3 To charge refrigerant

5.6.4 Error codes when charging refrigerant

5.6.5 To fix the fluorinated greenhouse gases label

5.7 Connecting the electrical wiring

5.7.1 Field wiring: Overview

5.7.2 Guidelines when knocking out knockout holes

5.7.3 Guidelines when connecting the electrical wiring

5.7.4 To connect the electrical wiring on the outdoor unit

6 Configuration

5.8 Finishing the outdoor unit installation

5.8.1 To finish the transmission wiring

6.1 Making field settings

6.1.1 About making field settings

6.1.2 To access the field setting components

6.1.3 Field setting components

6.1.4 To access mode 1 or 2

6.1.5 To use mode 1

6.1.6 To use mode 2

6.1.7 Mode 1 (and default situation): Monitoring settings

6.1.8 Mode 2: Field settings

7 Commissioning