Daikin LRMEQ3AY1, LRMEQ4AY1 Operation manuals

Installation and operation

manual

Air-cooled refrigeration condensing unit

LRMEQ3AY1
LRMEQ4AY1

Installation and operation manual

Air-cooled refrigeration condensing unit

English

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A~E

a b c d e e

B

e

D

HBHDH

U

(mm)

a

b

c

d

e

e

B

e

D

A

B

C

D

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B

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H

D

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

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≥250 ≥750 ≥1000 ≤500

½HU<HB≤H

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≥250 ≥1000 ≥1000 ≤500

HB>H

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HB>HDHD≤½H

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≥100 ≥1000 ≥1000 ≤500

½HU<HD≤H

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≥200 ≥1000 ≥1000 ≤500

HD>H

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≥200 ≥1700 ≥1000 ≤500

H

U

a

b

≥100

≥100

c

d

e

e

B

e

D

A

B

C

D

E

H

B

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

U

≥300 ≥1000

HD≤½H

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≥250 ≥1500

½HU<HD≤H

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≥300 ≥1500

B, D, E HB<HDHB≤½H

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≥300 ≥1000 ≥1000 ≤500

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≥300 ≥1250 ≥1000 ≤500

HB>H

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HB>HDHD≤½H

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≥250 ≥1500 ≥1000 ≤500

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≥300 ≥1500 ≥1000 ≤500

HD>H

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≥300 ≥2200 ≥1000 ≤500

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b (mm)

HB≤½H

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b≥250

½HU<HB≤H

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b≥300

HB>H

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HBH

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≥1000

≥200

≥2000

≥100

≥3000

≥600

≥1500

b

≥100

≥100

≥100

≥100

≥100

≥100

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B

H

U

2

A1

B1

A2

B2

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≥1000

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≥300

≥100

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Directivelor, cu amendamentele respective.

<A>

<B>

<C>

TÜV (NB1856)

502240101

DAIKIN.TCF.023C18/02-2016

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:

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Directives, telles que modifiées.

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Değiştirilmiş halleriyle Yönetmelikler.

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Direktiivejä, sellaisina kuin ne ovat

muutettuina.

v platném znění.

Smjernice, kako je izmijenjeno.

irányelv(ek) és módosításaik rendelkezéseit.

z późniejszymi poprawkami.

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

съгласно Сертификата<C>.

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

Sertifikatą<C>.

kā norādīts <A> un atbilstoši <B> 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.

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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 <B> vsúlade

s osvedčením<C>.

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

tarafından olumlu olarak değerlendirildiği gibi.

24Poznámka*

25Not*

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

<C>tanúsítvány szerint.

zgodnie z dokumentacją <A>, pozytywną

opinią <B> i Świadectwem<C>.

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

în conformitate cu Certificatul<C>.

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

vskladu scertifikatom<C>.

nagu on näidatud dokumendis <A> ja heaks kiidetud

<B> järgi vastavalt sertifikaadile<C>.

Daikin Europe N.V. 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 <B> enligt

Certifikatet<C>.

som det fremkommer i <A> og gjennom positiv

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

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

on hyväksynyt Sertifikaatin<C> mukaisesti.

jak bylo uvedeno v <A> a pozitivně zjištěno

<B> vsouladu sosvědčením<C>.

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

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:

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

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ob upoštevanju določb:

vastavalt nõuetele:

следвайки клаузите на:

laikantis nuostatų, pateikiamų:

ievērojot prasības, kas noteiktas:

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održiavajúc ustanovenia:

11Information*

12Merk*

13Huom*

bunun koşullarına uygun olarak:

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

secondo il Certificato<C>.

όπως καθορίζεται στο <A> και κρίνεται θετικά

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

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

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

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

решением <B> согласно Свидетельству<C>.

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

Certifikat<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:

Daikin Europe N.V.

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03

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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:

LRMEQ3AY1*, LRMEQ4AY1*,

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* = , , 1, 2, 3, ..., 9

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06

07

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:

EN60335-2-40,

overeenkomstig de bepalingen van:

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în urma prevederilor:

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

according to the Certificate<C>.

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

beurteilt gemäß Zertifikat<C>.

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

conformément au Certificat<C>.

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

siguiendo las disposiciones de:

secondo le prescrizioni per:

με τήρηση των διατάξεων των:

de acordo com o previsto em:

в соответствии с положениями:

01Note*

02Hinweis*

03Remarque*

04Bemerk*

overeenkomstig Certificaat<C>.

como se establece en <A> y es valorado

positivamente por <B> de acuerdo con el

Certificado<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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3P441337-1

Table of Contents

Table of Contents

1 About the documentation 4

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

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 5

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

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

3.3 About the indoor units ............................................................... 5

3.3.1 About reusing existing indoor heat exchangers.......... 6

4 Preparation 6

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

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

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

4.2.1 About reusing existing piping...................................... 6

4.2.2 Refrigerant piping requirements.................................. 6

4.2.3 Refrigerant piping material.......................................... 6

4.2.4 To select the piping size ............................................. 6

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

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

5 Installation 7

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

5.1.1 To open the outdoor unit............................................. 7

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 prevent the outdoor unit from falling over .............. 8

5.3 Connecting the refrigerant piping .............................................. 8

5.3.1 Guidelines when connecting the refrigerant piping..... 8

5.3.2 To flare the pipe end................................................... 9

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

5.3.4 Guidelines when installing a sight glass ..................... 10

5.3.5 Guidelines when installing a dryer .............................. 10

5.3.6 To connect the refrigerant piping to the outdoor unit .. 10

5.4 Checking the refrigerant piping ................................................. 11

5.4.1 About checking the refrigerant piping ......................... 11

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.......................................... 12

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

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

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

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

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

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

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

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

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

5.7.2 Guidelines when knocking out knockout holes ........... 15

5.7.3 Guidelines when connecting the electrical wiring ....... 15

5.7.4 To connect the electrical wiring on the outdoor unit.... 15

6 Configuration 16

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

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

6.1.2 To access the field setting components...................... 17

6.1.3 Field setting components............................................ 17

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

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

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

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

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

7 Commissioning 19

7.1 Precautions when commissioning .............................................. 19

7.2 Checklist before commissioning................................................. 19

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

7.3.1 About test run............................................................... 20

7.3.2 To perform a test run (7-LEDs display)........................ 20

7.3.3 Correcting after abnormal completion of the test run... 20

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

8 Troubleshooting 21

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

8.1.1 To display the error codes of the latest malfunctions... 21

8.1.2 Error codes: Overview ................................................. 21

9 Technical data 22

9.1 Service space: Outdoor unit ....................................................... 22

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

9.3 Wiring diagram: Outdoor unit ..................................................... 23

For the user 24

10 About the system 24

10.1 System layout ............................................................................. 24

11 Operation 24

11.1 Operation range ......................................................................... 24

11.2 Operating the system ................................................................. 24

11.2.1 About operating the system ......................................... 24

12 Maintenance and service 25

12.1 About the refrigerant................................................................... 25

12.2 After-sales service and warranty ................................................ 25

12.2.1 Warranty period ........................................................... 25

12.2.2 Recommended maintenance and inspection............... 25

13 Troubleshooting 25

13.1 Symptoms that are NOT system malfunctions ........................... 26

13.1.1 Symptom: The system does not operate ..................... 26

13.1.2 Symptom: The unit does not stop immediately when

operation is stopped..................................................... 26

13.1.3 Symptom: Noise (Outdoor unit) ................................... 26

13.1.4 Symptom: Dust comes out of the unit .......................... 26

13.1.5 Symptom: The outdoor unit fan does not spin ............. 26

13.1.6 Symptom: The inside of an outdoor unit is warm

even when the unit has stopped .................................. 26

14 Relocation 26
15 Disposal 26

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.

Installation and operation manual

4

Air-cooled refrigeration condensing unit

LRMEQ3+4AY1

4P441336-1 – 2016.03

2 About the box

a

1×

b

1×

c

1×

d

1×

cb da

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)

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7.

2 Remove the accessories.

▪ 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.

3.2 System layout

a Outdoor unit (ZEAS condensing unit)
b Refrigerant piping
c Indoor unit (Blower coil)
d Indoor unit (Showcase)

a General safety precautions
b Outdoor unit installation and operation manual
c Fluorinated greenhouse gases label
d Multilingual fluorinated greenhouse gases label

3 About the units

3.1 About the outdoor unit

This installation manual concerns the ZEAS condensing unit.

This unit is intended for outdoor installation and aimed for air to air
cooling applications.

Specification LRMEQ3+4

Capacity (cooling) 5.90~8.40kW
Ambient design temperature (cooling) –10~43°CDB

3.3 About the indoor units

NOTICE

To be sure your system setup (outdoor unit+indoor unit(s))
will work, you have to consult the latest technical
engineering data for ZEAS condensing unit.

The ZEAS condensing unit can be combined with several types of
third party indoor units and is intended for R410A use only.

When installing indoor units, mind the following:
▪ Expansion valve. Install an R410A mechanical thermostatic

expansion valve on each indoor unit. Insulate the feeler block of
the mechanical thermostatic expansion valve.

▪ Solenoid valve. Install an R410A solenoid valve (with an

operating differential pressure of 3.5MPa [35bar] or more) on the
primary side of the mechanical thermostatic expansion valve for
each indoor unit.

▪ Filter. Install a filter on the primary side of the solenoid valve for

each indoor unit. Determine the filter mesh count based on the
size specified by the solenoid valve and the mechanical
thermostatic expansion valve being used.

▪ Refrigerant flow. Route the path to the indoor unit heat

exchanger so that the refrigerant flow is from top to bottom.

▪ Multiple indoor units. When installing multiple indoor units,

install them at the same level. A combination of showcases and
blower coils is allowed if they are installed on the same floor.

▪ Defrosting type. Use either off-cycle defrosting or electric heater

defrosting models. Do NOT use hot-gas defrosting models.

LRMEQ3+4AY1
Air-cooled refrigeration condensing unit
4P441336-1 – 2016.03

Installation and operation manual

5

4 Preparation

t

Ø

3.3.1 About reusing existing indoor heat exchangers

In some cases you may reuse existing indoor heat exchangers, in
other cases not.

Reuse not allowed

You may not reuse existing indoor heat exchangers in the following
cases:

▪ When the design pressure is insufficient. (minimum design

pressure = 2.5MPa [25bar])

▪ When the path to the heat exchanger has been routed so that the

flow of refrigerant is from bottom to top.

▪ When the copper piping or fan is corroded.

▪ When the heat exchanger is contaminated. Foreign materials

(including oils for fabrication) must be ≤30mg/10m.

Reuse allowed

In other cases than above, you may reuse existing indoor heat
exchangers. However, if the old condensing unit did NOT use the
same refrigerant (R410A) and the same oil (FVC68D) as the new
one, you must clean the heat exchanger tubes to remove any
residue.

If the old condensing unit did NOT use the same refrigerant (R410A)
as the new one, make sure the mechanical thermostatic expansion
valve is compatible with R410A.

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.

NOTICE

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

4.2 Preparing refrigerant piping

4.2.1 About reusing existing piping

In some cases you may reuse existing piping, in other cases not.

Reuse not allowed

You may not reuse existing piping in the following cases:

▪ When the compressor in the old installation had problems

(example: breakdown). Possible consequence: oxidised coolant
oil, scale residue and other adverse effects.

▪ When the indoor and outdoor units were disconnected from the

piping for a long time. Possible consequence: water and dirt in
the piping.

▪ When the copper piping is corroded.

Reuse allowed

In other cases than above, you may reuse existing piping but keep
the following in mind:

Item Description

Piping diameter Must comply with requirements. See
Piping material
Piping length and

height difference
Piping insulation If deteriorated, must be replaced.

Flare connections May not be reused. Make new ones to

Welded connections Must be checked for gas leaks.
Cleaning piping If the old condensing unit did NOT use the

"4.2.2Refrigerant piping requirements"on
page6.

Must comply with requirements. See

"5.5To insulate the refrigerant piping"on
page12.

prevent leaks. See "5.3.1Guidelines when

connecting the refrigerant piping"on
page8 and "5.3.2To flare the pipe
end"on page9.

same refrigerant (R410A) and the same oil
(FVC68D) as the new one, you must clean
the piping to remove any residue.

4.2.2 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.

4.2.3 Refrigerant piping material

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

Outer diameter

(Ø)

6.4mm (1/4")

9.5mm (3/8")

12.7mm (1/2")

15.9mm (5/8") Annealed (O) ≥0.99mm

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

▪ Flare connections: Only use annealed material.

Temper grade Thickness (t)

Annealed (O) ≥0.80mm

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

(a)

4.2.4 To select the piping size

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

Installation and operation manual

6

Air-cooled refrigeration condensing unit

LRMEQ3+4AY1

4P441336-1 – 2016.03

F

A

1

2 3 3

d1

e

B

d2

C

c

D1

E

f

D2

ba

H

2

1 Outdoor unit
2 Indoor unit (Showcase)
3 Indoor unit (Blower coil)

A~F Liquid piping

a~f Gas piping

H Height difference outdoor-indoor

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/a: Piping between outdoor unit and piping branching

Use the same diameters as the connections on the outdoor units:

Liquid piping Ø9.5 mm
Gas piping Ø15.9 mm

B+C/b+c: Piping between piping branching

Use diameters depending on the total capacity of the indoor units
connected downstream.

Capacity Piping outer

diameter

Liquid piping <4.0kW Ø6.4mm

4.0≤x<8.4kW Ø9.5mm

Gas piping <1.0kW Ø9.5mm

1.0≤x<6.0kW Ø12.7mm

6.0≤x<8.4kW Ø15.9mm

5 Installation

4.3 Preparing electrical wiring

4.3.1 Safety device requirements

Power supply

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

LRMEQ3+4 13.5A 16A 3N~ 50Hz

Operation switch, low-noise switch and error output wiring

NOTICE
Operation switch. An operation switch is required to turn

outdoor unit operation ON/OFF. The outdoor unit cannot
operate without it. Use a voltage-free contact for
microcurrent (≤1mA, 12VDC).

NOTICE
Low-noise switch. If you want to remotely turn ON/OFF

low-noise operation (see setting [2‑25]), you must install a
low-noise switch. Use a voltage-free contact for
microcurrent (≤1mA, 12VDC).

NOTICE
Error output. If system malfunctions are likely to degrade

the articles in the room/showcase, you can install an alarm
(example: lamp). If a malfunction occurs, a signal
(220-240VAC) is given to the error output (X2M/E1/E2).
Use an alarm with a maximum load of 0.5A.

Wiring Sheathed + shielded cable (2

Maximum wiring length 130m

Recommended

fuses

Vinyl cords

0.75~1.25mm²

Power supply

380-415V

wires)

5 Installation

D~F/d~f: Piping between piping branching and indoor unit

Use the same diameters as the connections (liquid, gas) on the
indoor units.

NOTICE

If only 1 indoor unit is connected to the outdoor unit, and
the connections on the outdoor unit are different from
those on the indoor unit, then use the same piping
diameter as the connections on the outdoor unit, and install
suitable adapters as near to the indoor unit as possible.

LRMEQ3+4AY1
Air-cooled refrigeration condensing unit
4P441336-1 – 2016.03

5.1 Opening the units

5.1.1 To open the outdoor unit

DANGER: RISK OF ELECTROCUTION

DANGER: RISK OF BURNING

Installation and operation manual

7

5 Installation

1×

1

2

(mm)

>150

620

350

(345-355)

4× M12

a

20

a

4× M12

5.2 Mounting the outdoor unit

5.2.2 To install the outdoor unit

5.2.1 To provide the installation structure

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

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.

5.2.3 To prevent the outdoor unit from falling over

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

supply).

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

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

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

5.3 Connecting the refrigerant piping

DANGER: RISK OF BURNING

5.3.1 Guidelines when connecting the refrigerant piping

Take the following guidelines into account when connecting pipes:

▪ Coat the flare inner surface with ether oil or ester oil when

connecting a flare nut. Tighten 3 or 4 turns by hand, before
tightening firmly.

Installation and operation manual

8

▪ Always use two wrenches together when loosening a flare nut.

▪ Always use a spanner and torque wrench together to tighten the

flare nut when connecting the piping. This to prevent nut cracking
and leaks.

LRMEQ3+4AY1

Air-cooled refrigeration condensing unit

4P441336-1 – 2016.03

a b

c

d

a Torque wrench

R=0.4~0.8

45°

±2

90°

±2

A

a b

A

a b

c

1

2

3

4

a bb c

b Spanner
c Piping union
d Flare nut

Piping size

(mm)

Tightening

torque (N•m)

Flare

dimensions (A)

Flare shape

(mm)

(mm)

Ø6.4 15~17 8.7~9.1

Ø9.5 33~39 12.8~13.2
Ø12.7 50~60 16.2~16.6
Ø15.9 63~75 19.3~19.7

5.3.2 To flare the pipe end

CAUTION

▪ Incomplete flaring may cause refrigerant gas leakage.

▪ Do NOT re-use flares. Use new flares to prevent

refrigerant gas leakage.

▪ Use flare nuts that are included with the unit. Using

different flare nuts may cause refrigerant gas leakage.

1 Cut the pipe end with a pipe cutter.
2 Remove burrs with the cut surface facing downward so that the

chips do not enter the pipe.

5 Installation

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 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:

a Cut exactly at right angles.
b Remove burrs.

3 Remove the flare nut from the stop valve and put the flare nut

on the pipe.

4 Flare the pipe. Set exactly at the position as shown in the

following illustration.

Conventional flare tool

Flare tool for

R410A (clutch

type)

Clutch type

(Ridgid-type)

Wing nut type
(Imperial-type)

A 0~0.5mm 1.0~1.5mm 1.5~2.0mm

5 Check that the flaring is properly made.

a Flare’s inner surface must be flawless.
b The pipe end must be evenly flared in a perfect circle.
c Make sure the flare nut is fitted.

5.3.3 Using the stop valve and service port

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.

NOTICE
Thread-locking fluid. Before reattaching the stop valve

cover, apply thread-locking fluid to the screw thread (NOT
to the cover or sealing part). Otherwise, condensation
water might enter and freeze. Possible consequence:
Deformation, refrigerant leakage and compressor
malfunction.

To handle the stop valve

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

▪ The stop valve is factory closed.

LRMEQ3+4AY1
Air-cooled refrigeration condensing unit
4P441336-1 – 2016.03

a Cover (do NOT apply thread-locking fluid)
b Sealing part (do NOT apply thread-locking fluid)
c Screw thread with thread-locking fluid

Installation and operation manual

9