Daikin ERSQ016AAY1 user guide manual

INSTALLATION MANUAL

Outdoor unit for air to water heat pump

ERSQ011AAV1
ERSQ014AAV1
ERSQ016AAV1

ERRQ011AAV1
ERRQ014AAV1
ERRQ016AAV1

ERSQ011AAY1
ERSQ014AAY1
ERSQ016AAY1

ERRQ011AAY1
ERRQ014AAY1
ERRQ016AAY1

D2D2

L1

L2

B1

B2

D2D2

L1

L2

3

2

1

L

2

B

1

3

A

H

≥1000

≥1500

1

≥1500

(mm)

1 2 3

3

4

B2

B2

L2>H

L2<H

L2>H

L2<H

L1≤H

H<L1

L2≤H

H<L2

D2

D2D2

EE

L1

L1

CC

L2

L2

AA

D1D1D1

HH

B1B1B1

B2B2B2

L2>H

L2>H

L2<H

L2<H

L1≤H

H<L1

L2≤H

H<L2

D2

D2D2

EE

L1

L1

HH

B1

B1

CC

L2

L2

AA

D1D1D1

4

C

2

≥100

≥100

≥100

≥100

≥150 ≥150

≥100

≥100

≥250

≥100

≥200

≥300≥200

≥300

≥200 ≥1000

≥300

≥250

≥300

≥300 ≤500

≥250

≥300

≥100

≥150

≤500

≤500

≥1000

≤500

L1≤H

L2≤H

L1≤H

L2≤H

2

≥500

≥500

≥500

≥500

≥750

≥1000

≥1000

≥1000

≥1000

≥1000

≥1500

≥1000

≥1250

≥1500

≤500 ≥1000

≤500

≥1000

≥1000

≥1000

≤500

≥1000

≤500

≥1000

≥1000

≥1000

≤500 ≥1000

0<L1≤1/2 H

1

/2 H<L1≤H

0<L2≤1/2 H

1

/2 H<L2≤H

0<L2≤1/2 H

1

/2 H<L2≤H

0<L1≤1/2 H

1

/2 H<L1≤H

0<L2≤1/2 H

1

/2 H<L2≤H

3

1

3

3

1+2

3

5

321

78

B

9

44

5 6

10

A

C

D

5

6

6

1

7

3 5

8

249

6

7

1

7

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07

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ATITIKTIES-DEKLARACIJA

ATBILSTĪBAS-DEKLARĀCIJA

VYHLÁSENIE-ZHODY

CE -

CE -

CE -

CE - UYUMLULUK-BİLDİRİSİ

ZJAVA O SKLADNOSTI

VASTAVUSDEKLARATSIOON

ДЕКЛАРАЦИЯ-ЗА-СЪОТВЕТСТВИЕ

CE - I

CE -

CE -

IZJAVA-O-USKLAĐENOSTI

DEKLARACJA-ZGODNOŚCI

DECLARAŢIE-DE-CONFORMITATE

CE - MEGFELELŐSÉGI-NYILATKOZAT

CE -

CE -

CE -

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deklaruje na własną wyłączną odpowiedzialność, że urządzenia, których ta deklaracja dotyczy:

z vso odgovornostjo izjavlja, da je oprema naprav, na katero se izjava nanaša:

kinnitab oma täielikul vastutusel, et käesoleva deklaratsiooni alla kuuluv varustus:

visiška savo atsakomybe skelbia, kad įranga, kuriai taikoma ši deklaracija:

ar pilnu atbildību apliecina, ka tālāk aprakstītās iekārtas, uz kurām attiecas šī deklarācija:

vyhlasuje na vlastnú zodpovednosť, že zariadenie, na ktoré sa vzťahuje toto vyhlásenie:

declară pe proprie răspundere că echipamentele la care se referă această declaraţie:

декларира на своя отговорност, че оборудването, за което се отнася тази декларация:

m

o

x

r

b

tamamen kendi sorumluluğunda olmak üzere bu bildirinin ilgili olduğu donanımının aşağıdaki gibi olduğunu beyan eder:

t

v

k

w

24

25

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

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

instrukcjami:

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

conformitate cu instrucţiunile noastre

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

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

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

инструкции:

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

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

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

s našim návodom:

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

.

.

.

.

.

.

Direktive z vsemi spremembami.

Direktiivid koos muudatustega.

Директиви, с техните изменения.

Direktyvose su papildymais.

Direktīvās un to papildinājumos.

Smernice, v platnom znení.

Değiştirilmiş halleriyle Yönetmelikler.

Direktiver, med senere ændringer.

Direktiv, med företagna ändringar.

Direktiver, med foretatte endringer.

Direktiivejä, sellaisina kuin ne ovat muutettuina.

v platném znění.

Smjernice, kako je izmijenjeno.

irányelv(ek) és módosításaik rendelkezéseit.

Directives, as amended.

Direktiven, gemäß Änderung.

Directives, telles que modifiées.

Richtlijnen, zoals geamendeerd.

Directivas, según lo enmendado.

Direttive, come da modifica.

√‰ËÁÈÒv, fiˆ˜ ¤¯Ô˘Ó ÙÚÔÔÔÈËı›.

.

i

.

.

.

*

.

.

<B>

и оценено

z późniejszymi poprawkami.

Directivelor, cu amendamentele respective.

съгласно

<A>

ir kaip teigiamai nuspręsta

<B>

<A>

Sertifikatą <C>

положително от

pagal

както е изложено в

Cертификата <C>

kaip nustatyta

21 Забележка *

22 Pastaba *

Directivas, conforme alteração em.

Директив со всеми поправками.

, pozytywną opinią

şi apreciat pozitiv

igazolta a megfelelést,

<A>

<A>

<B>

szerint.

alapján, a(z)

Świadectwem <C>

<A>

<C> tanúsítvány

a(z)

a(z)

zgodnie z dokumentacją

<B>

aşa cum este stabilit în

.

.

.

*

01

DAIKIN.TCF.025C17/04-2009

KEMA (NB0344)

2082543.0551-QUA/EMC

<A>

<B>

<C>

v

<B>

pozitīvajam

<C> Sertifikasına

<B>

a pozitívne zistené

sertifikātu <C>

<A>

un atbilstoši

<A>

kā norādīts

tarafından olumlu olarak

<B>

osvedčením <C>

‘da belirtildiği gibi ve

vērtējumam saskaņā ar

değerlendirildiği gibi.

súlade s

ako bolo uvedené v

<A>

göre

Not

23 Piezīmes *

24 Poznámka *

25

v

<B>

ja heaks

<A>

sertifikaadile <C>

Certificatul <C>

in odobreno s strani

<A>

järgi vastavalt

certifikatom <C>

<B>

în conformitate cu

<B>

de

kiidetud

kot je določeno v

nagu on näidatud dokumendis

skladu s

02

03

04

05

06

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09

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PROHLÁŠENÍ-O-SHODĚ

CE - ERKLÆRING OM-SAMSVAR

CE - ILMOITUS-YHDENMUKAISUUDESTA

CE -

заявляет, исключительно под свою ответственность, что оборудование, к которому относится настоящее заявление:

erklærer som eneansvarlig, at udstyret, som er omfattet af denne erklæring:

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

erklærer et fullstendig ansvar for at det utstyr som berøres av denne deklarasjon, innebærer at:

ilmoittaa yksinomaan omalla vastuullaan, että tämän ilmoituksen tarkoittamat laitteet:

prohlašuje ve své plné odpovědnosti, že zařízení, k němuž se toto prohlášení vztahuje:

izjavljuje pod isključivo vlastitom odgovornošću da oprema na koju se ova izjava odnosi:

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

u

q

s

n

j

c

y

CE - DECLARAÇÃO-DE-CONFORMIDADE СЕ - ЗАЯВЛЕНИЕ-О-СООТВЕТСТВИИ

CE - OPFYLDELSESERKLÆRING

CE - FÖRSÄKRAN-OM-ÖVERENSTÄMMELSE

CE - ¢H§ø™H ™YMMOPºø™H™

CE - DECLARACION-DE-CONFORMIDAD

CE - DICHIARAZIONE-DI-CONFORMITA

la declaración:

referencia

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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:

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

Low Voltage 2006/95/EC

Machinery 98/37/EC (till 29/12/2009)

Electromagnetic Compatibility 2004/108/EC *

ob upoštevanju določb:

vastavalt nõuetele:

следвайки клаузите на:

laikantis nuostatų, pateikiamų:

ievērojot prasības, kas noteiktas:

održiavajúc ustanovenia:

bunun koşullarına uygun olarak:

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:

în urma prevederilor:

Notă *

16 Megjegyzés *

17 Uwaga *

18

on

<B>

ja jotka

enligt

<B>

och godkänts av

<A>

enligt

11 Information *

e giudicato positivamente

<A>

delineato nel

mukaisesti.

<A>

Sertifikat <C>

og gjennom positiv

<A>

ifølge

<B>

Sertifikaatin <C>

hyväksynyt

Certifikatet <C>

som det fremkommer i

bedømmelse av

jotka on esitetty asiakirjassa

12 Merk *

13 Huom *

Certificado <C>

¶ИЫЩФФИЛЩИОfi <C>

e com o parecer

Î·È ÎÚ›ÓÂÙ·È ıÂÙÈο

<A>

<A>

Certificato <C>

de acordo com o

Û‡Ìʈӷ Ì ÙÔ

<B>

<B>

secondo il

<B>

positivo de

·fi ÙÔ

tal como estabelecido em

da

* fiˆ˜ ηıÔÚ›˙ÂÙ·È ÛÙÔ

™ËÌ›ˆÛË

06 Nota *

08 Nota

<B>

positiv

<B>

<C>

<C>

et évalué positivement par

Certificat <C>

<A>

Certificate

and judged positively by

Zertifikat

aufgeführt und von

<A>

<A>

conformément au

beurteilt gemäß

according to the

as set out in

wie in der

tel que défini dans

<B>

19 Opomba *

20 Märkus

v

<B>

a pozitivně zjištěno

i pozitivno ocijenjeno od

<A>

Certifikatu <C>

<A>

prema

osvědčením <C>

<B>

strane

jak bylo uvedeno v

kako je izloženo u

souladu s

14 Poznámka *

15 Napomena *

i

<B>

согласно

<B>

и в соответствии с

og positivt vurderet af

<A>

<A>

Certifikat <C>

положительным решением

henhold til

как указано в

Свидетельству <C>

som anført i

09 Примечание *

10 Bemærk *

y es valorado

de acuerdo con el

<A>

Certificaat <C>

en positief beoordeeld door

<B>

<A>

overeenkomstig

zoals vermeld in

<B>

como se establece en

Certificado <C>

positivamente por

Jiro Tomita

Director Quality Assurance

Ostend, 2nd of June 2009

declares under its sole responsibility that the equipment to which this declaration relates:

erklärt auf seine alleinige Verantwortung, dass die Ausrüstung für die diese Erklärung bestimmt ist:

déclare sous sa seule responsabilité que l’équipement visé par la présente déclaration:

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

declara bajo su única responsabilidad que el equipo al que hace

dichiara sotto la propria responsabilità che gli apparecchi a cui è riferita questa dichiarazione:

a

d

f

l

e

CE - DECLARATION-OF-CONFORMITY

CE - KONFORMITÄTSERKLÄRUNG

CE - DECLARATION-DE-CONFORMITE

CE - CONFORMITEITSVERKLARING

Daikin Europe N.V.

i

declara sob sua exclusiva responsabilidade que os equipamentos a que esta declaração se refere:

‰ЛПТУВИ МВ ·ФОПВИЫЩИО‹ ЩЛ˜ В˘ı‡УЛ fiЩИ Ф ВНФПИЫМfi˜ ЫЩФУ ФФ›Ф ·У·К¤ЪВЩ·И Л ·ЪФ‡Ы· ‰‹ПˆЫЛ:

p

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

instructions:

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

daß sie gemäß unseren Anweisungen eingesetzt werden:

sont conformes à la/aux norme(s) ou autre(s) document(s) nor matif(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) nor mativo(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:

В›У·И Ы‡МКˆУ· МВ ЩФ(·) ·ОfiПФ˘ıФ(·) ЪfiЩ˘Ф(·) ‹ ¿ППФ ¤ББЪ·КФ(·) О·УФУИЫМТУ, ˘fi ЩЛУ ЪФ¸fiıВЫЛ fiЩИ ¯ЪЛЫИМФФИФ‡УЩ·И

ERSQ011AAV1*, ERSQ014AAV1*, ERSQ016AAV1*, ERSQ011AAY1*, ERSQ014AAY1*, ERSQ016AAY1*,

ERRQ011AAV1*, ERRQ014AAV1*, ERRQ016AAV1*, ERRQ011AAY1*, ERRQ014AAY1*, ERRQ016AAY1*,

* = , , 1, 2, 3, ..., 9

Û‡Ìʈӷ Ì ÙȘ Ô‰ËÁ›Â˜ Ì·˜:

following the provisions of:

gemäß den Vorschriften der:

conformément aux stipulations des:

overeenkomstig de bepalingen van:

EN60335-2-40,

siguiendo las disposiciones de:

secondo le prescrizioni per:

Ì ًÚËÛË Ùˆv ‰È·Ù¿Íˆv Ùˆv:

de acordo com o previsto em:

в соответствии с положениями:

01 Note *

02 Hinweis *

03 Remarque *

04 Bemerk *

05 Nota

3PW40544-5D

ERSQ011~016AAV1
ERSQ011~016AAY1
ERRQ011~016AAV1
ERRQ011~016AAY1

Outdoor unit for air to water heat pump

Installation manual

CONTENTS

Page

1. Introduction................................................................................ 1

1.1. General information........................................................................ 1

1.2. Scope of this manual ..................................................................... 1

1.3. Model identification........................................................................ 2

2. Accessories ............................................................................... 2

3. Safety considerations ................................................................ 2

4. Installation of the unit................................................................. 3

4.1. Selecting installation location......................................................... 3

4.2. Precautions on installation............................................................. 4

4.3. Dimensions and servicing space ...................................................4

4.4. Inspecting, handling and unpacking the unit .................................. 5

4.5. Drain work ...................................................................................... 5

4.6. Installing the unit............................................................................ 5

5. Refrigerant pipe size and allowable pipe length........................ 6

5.1. Selection of piping material............................................................ 6

5.2. Refrigerant pipe size...................................................................... 6

5.3. Allowable pipe length and height difference................................... 6

5.4. Guidelines for necessity of a trap................................................... 6

6. Precautions on refrigerant piping............................................... 7

6.1. Guidelines for brazing .................................................................... 7

6.2. Guidelines for flare connection....................................................... 7

6.3. Guidelines for handling stop valve ................................................. 8

7. Piping connection work.............................................................. 9

7.1. Refrigerant piping........................................................................... 9

7.2. Preventing foreign objects from entering........................................ 9

7.3. Leak test and vacuum drying ......................................................... 9

7.4. Precautions when connecting field piping and

regarding insulation...................................................................... 10

8. Charging refrigerant................................................................. 10

8.1. Important information regarding the refrigerant used................... 10

8.2. Calculating the additional refrigerant charge ...............................11

8.3. Method for adding refrigerant....................................................... 11

9. Electrical wiring work............................................................... 12

9.1. Precautions on electrical wiring work........................................... 12

9.2. Internal wiring – Parts table .........................................................12

9.3. System overview of field wiring .................................................... 13

9.4. Precautions on wiring of power supply and inter-unit wiring........ 13

9.5. Specifications of standard wiring components............................. 14

10. Start-up and configuration ....................................................... 15

10.1. Pre-operation checks ................................................................... 15

11. Test operation and final check................................................. 15

11.1. Final check................................................................................... 15

11.2. Test run ........................................................................................ 15

12. Maintenance and servicing...................................................... 16

12.1. Service precautions ..................................................................... 16

12.2. Service mode operation ............................................................... 16

13. Disposal requirements............................................................. 17

14. Unit specifications.................................................................... 17

READ THESE INSTRUCTIONS CAREFULLY BEFORE
INSTALLATION. KEEP THIS MANUAL IN A HANDY
PLACE FOR FUTURE REFERENCE.

IMPROPER INSTALLATION OR ATTACHMENT OF
EQUIPMENT OR ACCESSORIES COULD RESULT IN
ELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OR
OTHER DAMAGE TO THE EQUIPMENT. BE SURE ONLY
TO USE ACCESSORIES MADE BY DAIKIN WHICH ARE
SPECIFICALLY DESIGNED FOR USE WITH THE
EQUIPMENT AND HAVE THEM INSTALLED BY A
PROFESSIONAL.

IF UNSURE OF INSTALLATION PROCEDURES OR USE,
ALWAYS CONTACT YOUR DEALER FOR ADVICE AND
INFORMATION.

The English text is the original instruction. Other languages are
translations of the original instructions.

1. INTRODUCTION

1.1. General information

Thank you for purchasing this unit.
The outdoor unit is the air to water Daikin ERSQ or ERRQ heat

pump.
ERRQ units include special equipment (insulation, heater sheet, ...)

to ensure good operation in areas where low ambient temperature
can occur together with high humidity conditions. In such conditions
the ERSQ models may experience problems with severe ice build up
on the aircooled coil. In case such conditions are expected, the
ERRQ must be installed instead. These models contain
countermeasures (insulation, heater sheet, ...) to prevent freeze up.

NOTE

Possible options

For ERSQ models an optional bottom plate heater kit EKBPHT16A
can be connected to the outdoor unit. Refer to the installation manual
of the bottom plate heater kit for further details.

An ERSQ or ERRQ outdoor unit can only be
connected with the EKHBRD indoor unit.

Heater sheet Drain socket

ERSQ_V1 + Y1 Optional kit
ERRQ_V1 + Y1 Standard Use prohibited

(a) Combination of both options is prohibited.

(a)

Optional kit

(a)

Installation manual

1

1.2. Scope of this manual

This installation manual describes the procedures for unpacking,
installing and connecting all ERSQ or ERRQ outdoor unit models.

NOTE

The installation of the EKHBRD indoor unit is
described in the indoor unit installation manual.

Outdoor unit for air to water heat pump

ERSQ+ERRQ011~016AAV1+Y1

4PW49635-1A

1.3. Model identification

ER SQ 011 AA V1

V1 = 1N~, 220-240 V, 50 Hz
Y1 = 3N~, 380-415 V, 50 Hz

Series

Identification of heating capacity (kW)

SQ = standard model
RQ = model with freeze-up countermeasures

Split outdoor pair heat pump

2. ACCESSORIES

■ Check if the following accessories are included with the unit

Installation manual 1

Cable tie 2

Fluorinated greenhouse gases
label

Multilingual fluorinated
greenhouse gases label

1

1

■ Install the unit on a foundation that can withstand its weight.
Insufficient strength may result in the fall of equipment and
causing injury.

■ Carry out the specified installation work in consideration of strong
winds, typhoons, or earthquakes.
Improper installation work may result in accidents due to fall of
equipment.

■ Make certain that all electrical work is carried out by qualified
personnel according to the local laws and regulations and this
installation manual, using a separate circuit.
Insufficient capacity of the power supply circuit or improper
electrical construction may lead to electric shocks or fire.

■ Make sure that all wiring is secure, using the specified wires and
ensuring that external forces do not act on the terminal
connections or wires.
Incomplete connection or fixing may cause a fire.

■ When wiring between the indoor and outdoor units, and wiring
the power supply, form the wires so that the frontside panel can
be securely fastened.
If the frontside panel is not in place, the terminals may overheat
and electric shocks or a fire may be caused.

■ If refrigerant gas leaks during installation work, ventilate the
area immediately.
To xic gas may be produced if refrigerant gas comes into contact
with fire.

■ After completing the installation work, check to make sure that
there is no leakage of refrigerant gas.
To xic gas may be produced if refrigerant gas leaks into the room
and comes into contact with a source of fire, such as a fan
heater, stove or cooker.

■ Before touching electric terminal parts, turn off power switch.

See the figure below for the location of the accessories.

1 Accessories

1

3. SAFETY CONSIDERATIONS

The precautions listed here are divided into the following two types.
Both cover very important topics, so be sure to follow them carefully.

WARNING

If the warning is not observed, it may cause serious casualties.

CAUTION

If the caution is not observed, it may cause injury or damage to the
equipment.

Warning

■ Ask your dealer or qualified personnel to carry out installation
work. Do not install the machine by yourself.
Improper installation may result in water leakage, electric shocks
or fire.

■ Perform installation work in accordance with this installation
manual.
Improper installation may lead to water leakage, electric shocks
or fire.

■ Be sure to use only the specified accessories and parts for
installation work.
Failure to use the specified parts may result in water leakage,
electric shocks, fire, or the unit falling.

Caution

■ For use of units in applications with temperature alarm settings it
is advised to foresee a delay of 10 minutes for signalling the
alarm in case the alarm temperature is exceeded. The unit may
stop for several minutes during normal operation for "defrosting
of the indoor unit" or when in "thermostat-stop" operation.

■ Live parts can be easily touched by accident.
Never leave the unit unattended during installation or servicing
when the service panel is removed.

■ Earth the unit.
Earth resistance should be according to national regulations
Do not connect the earth wire to gas or water pipes,
lightning conductor or telephone earth wire.
Incomplete grounding may cause electric shocks.

■ Gas pipe.

Ignition or explosion may occur if the gas leaks.

■ Water pipe.

Hard vinyl tubes are not effective earths.

■ Lightning conductor or telephone earth wire.

Electric potential may rise abnormally if struck by a lightning
bolt.

■ Be sure to install an earth leakage circuit breaker.
Failure to install an earth leakage circuit breaker may cause
electric shocks and fire.

■ Install drain piping according to this installation manual to
ensure good drainage, and insulate the pipe to prevent
condensation. See combination table in "General information"

on page 1.

Improper drain piping may cause water leakage, and make the
furnitures get wet.

■ Install the indoor and outdoor units, power wire and connecting
wire at least 1 meter away from televisions or radios to prevent
image interference or noise.
(Depending on the radio waves, a distance of 1 meter may not
be sufficient to eliminate the noise.)

■ Do not rinse the outdoor unit. This may cause electric shocks or
fire.

ERSQ+ERRQ011~016AAV1+Y1

Outdoor unit for air to water heat pump

4PW49635-1A

Installation manual

2

■ Do not install the unit in places such as the following:

■ Where there is mist of mineral oil, oil spray or vapour for

example a kitchen.
Plastic parts may deteriorate, and cause them to fall out or

water to leak.

■ Where corrosive gas, such as sulphurous acid gas, is
produced.

Corrosion of copper pipes or soldered parts may cause the
refrigerant to leak.

■ Where there is machinery which emits electromagnetic
waves.

Electromagnetic waves may disturb the control system, and
cause malfunction of the equipment.

■ Where flammable gases may leak, where carbon fiber or
ignitable dust is suspended in the air or where volatile
flammables, such as thinner or gasoline, are handled.

Such gases may cause a fire.

■ Where the air contains high levels of salt such as that near
the ocean.

■ Where voltage fluctuates a lot, such as that in factories.

■ In vehicles or vessels.

■ Where acidic or alkaline vapour is present.

■ Do not allow a child to mount on the outdoor unit or avoid

placing any object on the unit.
Falling or tumbling may result in injury.

■ Do not touch any refrigerant which has leaked out of refrigerant
piping connections.
This may result in frostbite.

2 When installing the unit in a place exposed to strong wind, pay

special attention to the following.
Strong winds of 5 m/sec or more blowing against the outdoor

unit's air outlet causes short circuit (suction of discharge air),
and this may have the following consequences:

- Deterioration of the operational capacity.

-Frequent frost acceleration.

- Disruption of operation due to rise of high pressure.

- When a strong wind blows continuously on the face of the
unit, the fan can start rotating very fast until it breaks.

Refer to the figures for installation of this unit in a place where
the wind direction can be foreseen.

■ Tu rn the air outlet side toward the building's wall, fence or
screen.

Make sure there is enough room to do the installation.

■ Set the outlet side at a right angle to the direction of the wind.

4. INSTALLATION OF THE UNIT

4.1. Selecting installation location

■ Make sure to provide for adequate measures in order
to prevent that the outdoor unit be used as a shelter
by small animals.

■ Small animals making contact with electrical parts can
cause malfunctions, smoke or fire. Please instruct the
customer to keep the area around the unit clean.

1 Select an installation site where the following conditions are

satisfied and that meets with your customer's approval.

- Places which are well-ventilated.

- Places where the unit does not bother next-door neighbours.

- Safe places which can withstand the unit's weight and
vibration and where the unit can be installed level.

- Places where there is no possibility of flammable gas or
product leak.

- The equipment is not intended for use in a potentially
explosive atmosphere.

- Places where servicing space can be well ensured.

- Places where the indoor and outdoor units' piping and wiring
lengths come within the allowable ranges.

- Places where water leaking from the unit cannot cause
damage to the location (e.g. in case of a blocked drain pipe).

- Places where the rain can be avoided as much as possible.

Strong wind

Blown air Strong wind

3 Prepare a water drainage channel around the foundation, to

drain waste water from around the unit (field supply).

4 If the water drainage of the unit is not easy, please build up the

unit on a foundation of concrete blocks, etc. (the height of the
foundation should be maximum 150 mm).

5 If you install the unit on a frame, please install a waterproof plate

within 150 mm of the underside of the unit in order to prevent the
invasion of water from the lower direction.

6 When installing the unit in a place frequently exposed to snow,

pay special attention to elevate the foundation as high as
possible.

7 The outdoor unit may short circuit depending on its environment,

so use the louvers (field supply).

8 If you install the unit on a building frame,

please install a waterproof plate (field
supply)(within 150 mm of the underside of
the unit) or use a drain kit (refer to
combination table in "General information"

on page 1) in order to avoid the drainwater

dripping. (See figure).

Installation manual

3

Outdoor unit for air to water heat pump

ERSQ+ERRQ011~016AAV1+Y1

4PW49635-1A

Selecting a location in cold climates

Refer to "General information" on page 1.

CAUTION

When operating the outdoor unit in a low outdoor ambient
temperature, be sure to follow the instructions described
below.

■ To prevent exposure to wind, install the outdoor unit with its

suction side facing the wall.

■ Never install the outdoor unit at a site where the suction side

may be exposed directly to wind.

■ To prevent exposure to wind, install a baffle plate on the air

discharge side of the outdoor unit.

■ In heavy snowfall areas it is very important to select an

installation site where the snow will not affect the unit. If lateral
snowfall is possible, make sure that the heat exchanger coil is
not affected by the snow (if necessary construct a lateral
canopy).

4.3. Dimensions and servicing space

■ The connection piping outlet direction in the installation shown in

figure 4 is frontward or downward. The unit of numeric values

is mm.

■ When routing the piping backward, secure space of ≥250 mm on
the right side of the unit.

(A) In case of non-stacked installation (See figure 4)

Suction side obstacle

Discharge side obstacle

Left side obstacle

Right side obstacle

Top side obstacle

Obstacle is present

✓

1 In these cases, close the

bottom of the installation
frame to prevent the
discharged air from
being bypassed

2 In these cases, only 2

units can be installed.

3 In these cases, no

restriction of height L1.

This situation is not
allowed

1 Construct a large canopy.

1

2 Construct a pedestal.

Install the unit high enough off
the ground to prevent burying in

2

snow.

The equipment described in this manual may cause
electronic noise generated from radio-frequency energy.
The equipment complies to specifications that are
designed to provide reasonable protection against such
interference. However, there is no guarantee that
interference will not occur in a particular installation.

It is therefore recommended to install the equipment and
electric wires keeping proper distances away from stereo
equipment, personal computers, etc... (See figure 2)

1 Personal computer or radio
2 Indoor unit
3 Outdoor unit

In extreme circumstances you should keep distances of
3 m or more and use conduit tubes for power and
transmission lines.

4.2. Precautions on installation

■ Check the strength and level of the installation ground so that
the unit will not cause any operating vibration or noise after
installation.

■ In accordance with the foundation drawing in the figure, fix the
unit securely by means of the foundation bolts. (Prepare four
sets of M12 foundation bolts, nuts and washers each which are
available on the market.)

■ It is best to screw in the foundation bolts until their length are
20 mm from the foundation surface.

A

140

140620

(B) In case of stacked installation

1. In case obstacles exist in front of the outlet side.

A

100

≥1000

2. In case obstacles exist in front of the air inlet.

A

100

≥300

NOTE

■ Do not stack more than one unit.

■ About 100 mm is required as the dimension

for laying the upper outdoor unit's drain pipe.

■ Get the portion A sealed so that air from the
outlet does not bypass.

(C) In case of multiple-row installation (for roof top use, etc.)

1. In case of installing one unit per row.

117

219

289

47

A Discharge side
B Bottom view (mm)
C Drain hole

ERSQ+ERRQ011~016AAV1+Y1

Outdoor unit for air to water heat pump

4PW49635-1A

B

423

614

20

350

(345-355)

C

≥200

≥1000

≥100

≥2000

Installation manual

4

2. In case of installing multiple units (2 units or more) in lateral
connection per row.

L

A

≥3000

H

≥600

≥1500

Relation of dimensions between H, A and L is shown in the table
below.

L A

L≤H

H<L Installation impossible

0<L≤1/2H 250
1/2H<L≤H 300

4.4. Inspecting, handling and unpacking the unit

Handling the unit

As shown in the figure, bring the unit slowly by grabbing the left and
right grips.

Method for removing transportation stay

The yellow transportation stay installed over the compressor leg for
protecting the unit during transport must be removed. Proceed as
shown in figure 3 and described below.

A Compressor
B Fixing nut
C Transportation stay

1 Slightly loosen the fixing nut (B).

2 Remove the transportation stay (C) as shown in figure 3.

3 Tighten the fixing nut (B) again.

CAUTION

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

4.5. Drain work

Check in the combination table under "General information" on

page 1 whether drain work is allowed. In case drain work on your unit

is allowed and the installation site requires drain work, then follow the
guidelines below.

■ Drain kits for drainage are available as option.

■ If drain work from the outdoor unit causes trouble (for example, if

the drain water may splash on people) provide the drain piping
using a drain socket (optional).

■ Make sure the drain works properly.

Place your hands on the corner instead of holding the suction inlet in
the side of the casing, otherwise the casing could be deformed.

Ta ke care not to let hands or objects come in contact with
rear fins.

Installation method for prevention of falling over

If it is necessary to prevent the unit from falling over, install as shown
in the figure.

■ prepare all 4 wires as indicated in the drawing

■ unscrew the top plate at the 4 locations indicated A and B

■ put the screws through the nooses and screw them back tight

AA

B

C

A location of the 2 fixation holes on the front side of the unit
B location of the 2 fixation holes on the rear side of the unit
C wires: field supply

NOTE

If drain holes of the outdoor unit
are covered by a mounting base
or by floor surface, raise the unit
in order to provide a free space
of more than 100 mm under the
outdoor unit.

4.6. Installing the unit

Since design pressure is 4.0 MPa or 40 bar, pipes of larger
wall thickness may be required. Refer to paragraph

"5.1. Selection of piping material" on page 6.

Precautions for R410A

■ The refrigerant requires strict cautions for keeping the system
clean, dry and tight.

- Clean and dry

Foreign materials (including mineral oils or moisture) should
be prevented from getting mixed into the system.

- Tight

Read "6. Precautions on refrigerant piping" on page 7
carefully and follow these procedures correctly.

■ Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state. (If the refrigerant
is in state of gas, its composition changes and the system will
not work properly).

■ The connected indoor unit must be the EKHBRD unit.

Installation manual

5

Outdoor unit for air to water heat pump

ERSQ+ERRQ011~016AAV1+Y1

4PW49635-1A

Installation

■ For installation of the indoor unit, refer to the indoor unit
installation manual.

■ Refer to the Engineering Data Book for the complete list of
technical and electrical specifications.

■ Never operate the unit with the discharge pipe thermistor (R2T),
suction pipe thermistor (R3T) and pressure sensors (S1NPH,
S1NPL) removed. Such operation may burn out the compressor.

■ Be sure to confirm the model name and the serial no. of the
outer (front) plates when attaching/detaching the plates to avoid
mistakes.

■ When closing the service panels, take care that the tightening
torque does not exceed 4.1 N•m.

5. REFRIGERANT PIPE SIZE AND ALLOWABLE

PIPE LENGTH

5.2. Refrigerant pipe size

The pipes between outdoor unit and indoor unit should have the
same size as the outdoor connections.

Refrigerant pipe size (mm)

Gas pipe Ø15.9
Liquid pipe Ø9.5

5.3. Allowable pipe length and height difference

See the table below concerning lengths and heights. Refer to

figure 1. Assume that the longest line in the figure corresponds with

the actual longest pipe, and the highest unit in the figure corresponds
with the actual highest unit.

Allowable pipe length (m)

Maximum total one-way piping length
Maximum height between indoor and outdoor H 30
Chargeless length L ≤10

(a) Parenthesized figure represents the equivalent length.

(a)

L 50 (95)

■ Piping and other pressure containing parts shall
comply with the applicable national and international
regulations and shall be suitable for refrigerant. Use
phosphoric acid deoxidised seamless copper for
refrigerant.

■ Installation shall be done by a licensed refrigerant
technician, the choice of materials and installation
shall comply with national and international
regulations. In Europe the EN378 is the application
standard that shall be used.

To persons in charge of piping work:

■ Be sure to open the stop valve after piping installing
and vacuuming is complete. (Running the system with
the valve closed may break the compressor.)

■ It is forbidden to discharge refrigerant into the
atmosphere. Collect the refrigerant in accordance
with the freon collection and destruction law.

5.1. Selection of piping material

■ Foreign materials inside pipes (including oils for fabrication)
must be ≤30 mg/10 m.

■ Construction material: phosphoric acid deoxidized seamless
copper for refrigerant.

■ Temper grade: use piping with temper grade in function of the
pipe diameter as listed in table below.

■ The pipe thickness of the refrigerant piping should comply with
relevant local and national regulations. The minimal pipe
thickness for R410A piping must be in accordance with the table
below.

Temper grade

Pipe size (mm)

Ø9.5 O 0.80

Ø15.9 O 1,00

O = Annealed

of piping material

■ 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).

Minimal thickness

(mm)

5.4. Guidelines for necessity of a trap

Since there is fear of the oil held inside the riser piping flowing back
into the compressor when stopped and causing liquid compression
phenomenon, or cases of deterioration of oil return, it will be
necessary to provide a trap at an appropriate place in the riser gas
piping.

A Outdoor unit
B Indoor unit

A

E

B

C

H

D

A trap is not necessary when the outdoor unit is installed in a higher
position than the indoor unit.

C Gas piping
D Liquid piping
E Oiltrap
H Install trap at

each difference in
height of 10 m.

ERSQ+ERRQ011~016AAV1+Y1

Outdoor unit for air to water heat pump

4PW49635-1A

Installation manual

6

6. PRECAUTIONS ON REFRIGERANT PIPING

■ Do not allow anything other than the designated refrigerant to
get mixed into the freezing cycle, such as air, etc. If any
refrigerant gas leaks while working on the unit, ventilate the
room thoroughly right away.

■ Use R410A only when adding refrigerant
Installation tools:

Make sure to use installation tools (gauge manifold charge hose,
etc.) that are exclusively used for R410A installations to withstand
the pressure and to prevent foreign materials (e.g. mineral oils
and moisture) from mixing into the system.

Vacuum pump:

Use a 2-stage vacuum pump with a non-return valve
Make sure the pump oil does not flow oppositely into the system

while the pump is not working.
Use a vacuum pump which can evacuate to –100.7 kPa (5 Torr,

–755 mm Hg).

■ In order to prevent dirt, liquid or dust from entering the piping,
cure the piping with a pinch or taping.

Installation period Protection method

More than a month Pinch the pipe

Less than a month

Regardless of the period

Pinch or tape the pipe

6.1. Guidelines for brazing

■ Make sure to blow through with nitrogen when brazing.
Blowing through with nitrogen prevents the creation of large
quantities of oxidized film on the inside of the piping. An oxidized
film adversely affects valves and compressors in the
refrigerating system and prevents proper operation.

■ The nitrogen pressure should be set to 0.02 MPa (i.e., just
enough so it can be felt on the skin) with a pressure-reducing
valve.

12 345

6

1 Refrigerant piping
2 Part to be brazed
3 Taping
4 Hands valve
5 Pressure-reducing valve
6 Nitrogen

■ Do not use anti-oxidants when brazing the pipe joints.
Residue can clog pipes and break equipment.

■ Do not use flux when brazing copper-to-copper refrigerant
piping. Use phosphor copper brazing filler alloy (BCuP) which
does not require flux.

■ Flux has an extremely harmful influence on refrigerant piping
systems. For instance, if chlorine based flux is used, it will cause
pipe corrosion or, in particular, if the flux contains fluorine, it will
deteriorate the refrigerant oil.

6

Great caution is needed when passing copper tubes through
walls.

■ For handling of stop valves, refer to "6.3. Guidelines for handling

stop valve" on page 8.

■ Only use the flare nuts included with the unit. Using different
flare nuts may cause the refrigerant to leak.

■ Ensure that the field piping and connections are not subjected to
stress.

■ Use appropriate fire resistant piping insulation according to
national regulations.

6.2. Guidelines for flare connection

■ Flares should not be re-used. New ones should be made in
order to prevent leaks.

■ Use a pipe cutter and flare tool suitable for the refrigerant used.

■ Only use the annealed flare nuts included with the unit. Using

different flare nuts may cause the refrigerant to leak.

■ Please refer to the table for flaring dimensions and tightening
torques (too much tightening will result in splitting the flare).

Piping size

(mm)

Ø9.5 33~39 12.8~13.2

Ø15.9 63~75 19.4~19.7

■ When connecting the flare nut, coat the flare inner surface with
ether oil or ester oil and initially tighten 3 or 4 turns by hand
before tightening firmly.

■ When loosening a flare nut, always use two wrenches together.
When connecting the piping, always use a spanner and torque
wrench together to tighten the flare nut to prevent flare nut
cracking and leaks.

Tightening

torque (N•m)

Flare dimensions A

(mm)

Flare shape

(mm)

±2

90

45

±2

A

R=0.4~0.8

Installation manual

7

42

1

3

1 Piping union
2 Spanner
3 Flare nut
4 Torque wrench

Outdoor unit for air to water heat pump

ERSQ+ERRQ011~016AAV1+Y1

4PW49635-1A

Not recommended, but in case of emergency

Should you be forced to connect the piping without a torque
wrench, follow the following installation method:

■ Tighten the flare nut using a spanner until the tightening
torque suddenly increases.

■ From that position further tighten the flare nut the angle listed
below:

Piping size

(mm)

Ø9.5 60~90 ±200

Ø15.9 30~60 ±300

Further tightening

angle (degrees)

Recommended arm

length of spanner (mm)

6.3. Guidelines for handling stop valve

Cautions on handling the stop valve

■ Make sure to keep both stop valves open during operation.

■ The figure below shows the name of each part required in

handling the stop valve.

Opening/closing the stop valve

Opening the stop valve

1. Remove the valve cover.

2. Insert a hexagon wrench (liquid side: 4 mm/gas side: 6 mm) into

the stop valve and turn the stop valve counterclockwise.

3. When the stop valve cannot be turned any further, stop turning.
The valve is now open.

Closing the stop valve

1. Remove the valve cover.

2. Insert a hexagon wrench (liquid side: 4 mm/gas side: 6 mm) into

the stop valve and turn the stop valve clockwise.

3. When the stop valve cannot be turned any further, stop turning.
The valve is now closed.

Closing direction

Liquid side Gas side

1

2

1 Service port and service port cover
2 Stop valve
3 Field piping connection
4 Stop valve cover

3

4

■ The stop valve is factory closed.

■ Do not apply excessive force to the stop valve. Doing so may

break the valve body.
Since the stop valve mounting plate may be deformed if only a
torque wrench is used to loosen or tighten the flare nut, always
make sure to secure the stop valve with a spanner, then loosen
or tighten the flare nut with a torque wrench.
Do not place the spanner on the stop valve cover, as this could
cause a refrigerant leak.

1 Spanner
2 Torque wrench

1

2

■ The operating pressure at the refrigerant side can be low (for
example, heating operation when outdoor temperature is low),
sufficiently seal the flare nut in the stop valve on the gas line with
silicon sealant to prevent freezing.

Cautions on handling 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.

Cautions on handling 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

ERSQ+ERRQ011~016AAV1+Y1

Outdoor unit for air to water heat pump

4PW49635-1A

Silicon sealing pad
(Make sure there is no gap)

Item Tightening torque (N•m)

Stop valve cover, liquid side 13.5~16.5
Stop valve cover, gas side 22.5~27.5
Service port cover 11.5~13.9

Installation manual

8

7. PIPING CONNECTION WORK

7.1. Refrigerant piping

■ Field pipes can be installed in four directions.

Figure - Field pipes in four directions (See figure 5)

1 Drill
2 Center area around knockout hole
3 Knockout hole
4 Slit
5 Connecting pipe liquid (field supply)
6 Bottom frame
7 Front plate
8 Pipe outlet plate
9 Screw front plate

10 Pipe outlet plate screw

A Forward
B Backward
C Sideways
D Downward

When connecting the piping in the lateral direction (on the rear),
remove the piping cover (rear) in reference to figure 7.

1 Piping cover (rear)

■ To install the connecting pipe to the unit in a downward direction,
make a knockout hole by penetrating the center area around the
knockout hole using a Ø6 mm drill. (See figure 5).

■ Cutting out the two slits makes it possible to install as shown in

figure 5.

(Use a metal saw to cut out the slits.)

■ After knocking out the knock-out, it is recommended to apply
repair paint to the edge and the surrounding end surfaces to
prevent rusting.

7.2. Preventing foreign objects from entering

Plug the pipe through-holes with putty or insulating material (field
supply) to stop up all gaps, as shown in the figure.

1

Insects or small animals entering the outdoor unit may cause a short
circuit in the electrical box.

1 Putty or insulating material (field

supply)

7.3. Leak test and vacuum drying

When all piping work is complete and the outdoor unit is connected to
the indoor unit, it is necessary to (a) check for any leakages in the
refrigerant piping and (b) to perform vacuum drying to remove all
moisture in the refrigerant piping.

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

General guidelines

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

■ Use a 2-stage vacuum pump with a non-return valve which can

evacuate to a gauge pressure of –100.7 kPa (5 Torr absolute,
–755 mm Hg).

■ Connect the vacuum pump to both the service port of the gas
stop valve and the liquid stop valve to increase efficiency.

■ Do not purge the air with refrigerants. Use a vacuum
pump to evacuate the installation. No additional
refrigerant is provided for air purging.

■ Make sure that the gas stop valve and liquid stop
valve are firmly closed before performing the leak test
or vacuum drying.

Setup

(See figure 6)

1 Pressure reducing valve
2 Nitrogen
3 Siphon system
4 Vacuum pomp
5 Valve A
6 Gas line stop valve
7 Liquid line stop valve
8 Stop valve service port
9 Charge hose

Leak test

The leak test must satisfy specification EN 378-2.

1 Vacuum leak test

1.1 Evacuate the system from the liquid and gas piping to

–100.7 kPa (5 Torr).

1.2 Once reached, turn off the vacuum pump and check that
the pressure does not rise for at least 1 minute.

1.3 Should the pressure rise, the system may either contain
moisture (see vacuum drying below) or have leaks.

2 Pressure leak test

2.1 Break the vacuum by pressurizing 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).

2.2 Test for leaks by applying a bubble test solution to all piping
connections.

Installation manual

9

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).

2.3 Discharge all nitrogen gas.

Outdoor unit for air to water heat pump

ERSQ+ERRQ011~016AAV1+Y1

4PW49635-1A

Vacuum drying

8. CHARGING REFRIGERANT

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.

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.

4. In that case, break the vacuum by pressurizing 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.

5. The stop valves can now be opened, and/or additional
refrigerant can be charged (see "8.3. Method for adding

refrigerant" on page 11).

After opening the stop valve, it is possible that the pressure
in the refrigerant piping does not rise. This might be
caused by e.g. the closed state of the expansion valve in
the outdoor unit circuit, but does not present any problem
for correct operation of the unit.

7.4. Precautions when connecting field piping and

regarding insulation

■ Be careful not to let the indoor and outdoor field piping come into
contact with the compressor terminal cover.
If the liquid-side piping insulation might come into contact with it,
adjust the height as shown in the figure below. Also, make sure
the field piping does not touch the bolts or outer panels of the
compressor.

■ When the outdoor unit is installed above the indoor unit the
following can occur:
The condensated water on the stop valve can move to the
indoor unit. To avoid this, please cover the stop valve with
sealing material.

■ If the temperature is higher than 30°C and the humidity is higher
than RH 80%, then the thickness of the sealing materials should
be at least 20 mm in order to avoid condensation on the surface
of the sealing.

■ Be sure to insulate the liquid and gas-side field piping.

Any exposed piping may cause condensation or burns
if touched.

(The highest temperature that the gas-side piping can reach is
around 120°C, so be sure to use insulating material which is
heat resistant.)

1
2

3

4

1 Compressor
2 Ter minal cover
3 Indoor and outdoor

4

5

5

6

A

field piping

4 Corking, etc.
5 Insulation material

(field supply)

6 Bolts
A Be careful with pipe,

bolt and outer panel
connections

■ When servicing the unit requires the refrigerant
system to be opened, treatment and evacuation of
refrigerant must be done in accordance with relevant
local and national legislation.

■ Refrigerant cannot be charged until field wiring has
been completed.

■ Refrigerant may only be charged after performing the
leak test and the vacuum drying (see above).

■ When charging a system, care shall be taken that its
maximum permissible charge is never exceeded, in
view of the danger of liquid hammer.

■ Charging with an unsuitable substance may cause
explosions and accidents, so always ensure that the
appropriate refrigerant (R410A) is charged.

■ Refrigerant containers shall be opened slowly.

■ Always use protective gloves and protect your eyes

when charging refrigerant.

■ When performing service on the unit requiring the
refrigerant system to be opened, refrigerant must be
evacuated according to local regulations.

■ When the power is on, please close the front
panel when leaving the unit.

To avoid compressor breakdown. Do not charge the refrigerant
more than the specified amount.

■ This outdoor unit is factory charged with refrigerant and
depending on pipe sizes and pipe lengths some systems require
additional charging of refrigerant. See "Calculating the additional

refrigerant charge" on page 11.

■ In case re-charge is required, refer to the nameplate of the unit.
The nameplate states the type of refrigerant and necessary
amount.

8.1. Important information regarding the refrigerant

used

This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.

Refrigerant type: R410A

(1)

GWP

value: 1975

(1)

GWP = global warming potential

Please fill in with indelible ink,

■➀ the factory refrigerant charge of the product,

■➁ the additional refrigerant amount charged in the field and

■➀+➁ the total refrigerant charge

on the fluorinated greenhouse gases label supplied with the product.
The filled out label must be adhered on the inside of the product and

in the proximity of the product charging port (e.g. on the inside of the
service cover).

1 factory refrigerant charge

4

of the product:
see unit name plate

1

2 additional refrigerant

amount charged in the

2

field

3 total refrigerant charge

3

4 Contains fluorinated

greenhouse gases

5

6

covered by the Kyoto
Protocol

5 outdoor unit
6 refrigerant cylinder and

manifold for charging

ERSQ+ERRQ011~016AAV1+Y1

Outdoor unit for air to water heat pump

4PW49635-1A

Installation manual

10

NOTE

National implementation of EU regulation on certain
fluorinated greenhouse gases may require to provide
the appropriate official national language on the unit.
Therefore, an additional multilingual fluorinated
greenhouse gases label is supplied with the unit.

Sticking instructions are illustrated on the backside of
that label.

8.2. Calculating the additional refrigerant charge

Piping length is the one way length of gas or liquid piping
whichever is the longest.

It is not necessary to charge additionally if the piping length is under
10 m.

If the piping length is over 10 m please determine the additional
amount of refrigerant to be charged using the table below.

Tab le 1: Additional charging of refrigerant <unit: kg>

Refrigerant piping length

3~10 m 10~20 m 20~30 m 30~40 m 40~50 m

(a)

(a) Additional charge not required

0.54 1.08 1.62 2.16

8.3. Method for adding refrigerant

Precautions when adding R410A

■ Make sure to charge the refrigerant in liquid state to the liquid
pipe. Since R410A is a mixed refrigerant, its composition
changes if charged in its gaseous state and normal system
operation would then no longer be assured.

■ Before charging, check whether the refrigerant cylinder has a
syphon attached or not and position the cylinder accordingly.

Filling using a cylinder
with a siphon attached

Charge the liquid refrigerant
with the cylinder in upright
position.

Filling using a cylinder
without a siphon attached

Charge the liquid refrigerant
with the cylinder in up-side­down position.

How to connect the tank?

V1 Y1

12

4

5

12

7
4

5

Complete recharging

In case complete recharging is required (after a leak, etc.), refer to
the table below to determine the necessary amount of refrigerant.

Before recharging, make sure to execute vacuum drying of
the internal piping of the unit as well. To do so, use the
internal service port of the unit. Do NOT use the service
ports located on the stop valve (see "6.3. Guidelines for

handling stop valve" on page 8), since vacuum drying can

not be performed properly from these ports.
Outdoor units have 1 port on the piping. It is between the
heat exchanger and the 4-way valve.

Tab le 2: Total charging amount <unit: kg>

Refrigerant piping length

3~10 m 10~20 m 20~30 m 30~40 m 40~50 m

4.5 5.0 5.6 6.1 6.7

6

3

1 Liquid line stop valve
2 Gas line stop valve
3 To indoor unit
4 Valve A
5 R410A tank
6 Measuring instrument
7 Pipe fixing plate

3

6

When the refrigerant tank is connected and the specified operation is
performed, the appropriate amount of refrigerant will be charged into
the system. The refrigerant must be charged according to the
procedure described below.

Charging while the outdoor unit is at a standstill

See the figure in "How to connect the tank?" on page 11.

1 Determine the weight of refrigerant to be charged additionally

referring to the item "Additional refrigerant charge" in

"Calculating the additional refrigerant charge" on page 11 and fill

in the amount in the "Additional refrigerant charge label"
attached to the unit.

2 After the vacuum drying is finished, open valve A and charge the

additional refrigerant in its liquid state through the service port
on the liquid stop valve taking into account following instructions:

-Turn on the power supply of the outdoor unit and indoor unit

(main circuit breaker on).

- Check that gas and liquid stop valves are closed.

- Stop the compressor and charge the specified weight of

refrigerant.

Installation manual

11

To avoid compressor breakdown. Do not charge the
refrigerant more than the specified amount.

Outdoor unit for air to water heat pump

ERSQ+ERRQ011~016AAV1+Y1

4PW49635-1A

9. ELECTRICAL WIRING WORK

All field wiring and components must be installed by a
licensed electrician and must comply with relevant
European and national regulations.

To persons in charge of electrical wiring work:

Do not operate the unit until the refrigerant piping is
complete. (Running it before the piping is ready will break
the compressor.)

9.1. Precautions on electrical wiring work

■ Before obtaining access to terminal devices, all supply circuits
must be interrupted.

■ Use only copper wires.

■ Do not turn on the main switch until all the wiring is completed.

■ Never squeeze bundled cables into a unit.

■ Secure the electrical wiring with clamping material as shown in

figure 8 so that it does not come in contact with the piping,

particularly on the high-pressure side.
Make sure no external pressure is applied to the terminal
connectors.

■ When installing the earth leakage breaker make sure that it is
compatible with the inverter (resistant to high frequency
electrical noise) to avoid unnecessary opening of the earth
leakage breaker.

■ As this unit is equipped with an inverter, installing a phase
advancing capacitor not only will deteriorate power factor
improvement effect, but also may cause capacitor abnormal
heating accident due to high-frequency waves. Therefore, never
install a phase advancing capacitor.

■ Follow the "electrical wiring diagram" when carrying out any
electrical wiring.

■ Always ground wires. (In accordance with national regulations of
the pertinent country.)

■ Do not connect the ground wire to gas pipes, sewage pipes,
lightning rods, or telephone ground wires.

■ Combustion gas pipes: can explode or catch fire if there is a

gas leak.

■ Sewage pipes: no grounding effect is possible if hard plastic

piping is used.

■ Telephone ground wires and lightning rods: dangerous when

struck by lightning due to abnormal rise in electrical potential
in the grounding.

■ This unit uses an inverter, and therefore generates noise, which
will have to be reduced to avoid interfering with other devices.
The outer casing of the product may take on an electrical charge
due to leaked electrical current, which will have to be discharged
with the grounding.

■ For Y1 models only: Make sure to connect power supply cables
in normal phase. If connected in reverse phase, the remote
controller of the indoor unit indicates "
cannot operate. Change any two of the three power supply
cables (L1, L2, L3) to correct phase. (Refer to the installation
manual of the indoor unit for more details.)

■ A main switch or other means for disconnection having a contact
separation in all poles, shall be incorporated in the fixed wiring in
accordance with relevant local and national regulations.

U1

" and the equipment

9.2. Internal wiring – Parts table

L.............................Live

N ............................Neutral

..................Terminal strip

...........Field wiring

.........................Terminal strip

..........................Connector

.........................Protective earth

..........................Connection

.......................Relay connector

...........................Functional earthing

...........................Terminal

..........................Movable connector

..........................Fixed connector

BLU........................Blue

BRN .......................Brown

GRN.......................Green

RED .......................Red

WHT....................... White

YLW .......................Yellow

ORG....................... Orange

BLK ........................Black

A1P ........................Printed circuit board (main)

A2P ................# .....Printed circuit board (inverter)

A2P ................ * ..... Printed circuit board (service)

A3P ................ * ..... Printed circuit board (noise filter)

BS1~BS5 ...............Push button switch (mode, set, return, test,

reset)

C1~C3....................Capacitor

C4 ..................* .....Capacitor

DS1........................Dip switch

E1H........................Bottom plate heater

E1HC .....................Crankcase heater

F1U,F4U ........* .....Fuse (T 6.3 A/250 V)

F1U,F2U ........# .....Fuse (A 31.5 A/500 V)

F3U~F5U .......# .....Fuse (T 6.3 A/250 V)

F6U ........................Fuse (T 5.0 A/250 V)

FINTH ............* .....Thermistor (fin)

H1P~H8P...............Light emitting diode (service monitor orange)

H2P: Prepare, test: blinking

H2P: Malfunction detection: light up

HAP (A1P) .............Light emitting diode (service monitor green)

HAP (A2P) .....# .....Light emitting diode (service monitor green)

K1M........................Magnetic contactor (M1C)

K2M ...............# .....Magnetic contactor

K1R........................Magnetic relay (Y1S)

K2R........................Magnetic relay (Y2S)

K3R........................Magnetic relay (Y3S)

K4R........................Magnetic relay (E1HC)

K5R........................Magnetic relay

L1R ........................Reactor

L1R,L3R.........# ..... Reactor

M1C .......................Motor (compressor)

M1F........................ Motor (fan) (upper)

ERSQ+ERRQ011~016AAV1+Y1

Outdoor unit for air to water heat pump

4PW49635-1A

Installation manual

12

M2F ........................Motor (fan) (lower)

PS ..........................Switching power supply

Q1DI.......................Field earth leakage breaker (300 mA)

R1,R2 .....................Resistor

R1T ........................Thermistor (air)

R2T ........................Thermistor (discharge)

R2T ............... #......Thermistor (M1C discharge)

R3T ........................Thermistor (suction 1)

R4T ................* ......Thermistor (heat exchanger)

R4T ............... #......Thermistor (subcooling heat exchanger)

R5T ........................Thermistor (suction 2)

R6T ................* ......Thermistor (subcooling heat exchanger)

R6T ............... #......Thermistor (heat exchanger)

R7T ........................Thermistor (liquid pipe 1)

R8T ........................Thermistor (liquid pipe 2)

R9T ............... #......Thermistor (power module)

S1NPH ...................Pressure sensor (high)

S1NPL....................Pressure sensor (low)

S1PH......................Pressure switch (high)

V1R ........................Power module

V2R ................*......Diode module

V2R ...............#......Power module

V3R ........................Diode module

V1T.................*......IGBT (Insulated Gate Bipolar Transistor)

X1M........................Terminal strip (power supply)

X2M........................Terminal strip (control)

Y1E ........................Electronic expansion valve (main)

Y3E ........................Electronic expansion valve (subcool)

Y1S ........................Solenoid valve (4 way valve)

Y2S ........................Solenoid valve (hot gas)

Y3S ........................Solenoid valve (unload circuit)

Z1C~Z8C........*......Noise filter (ferrite core)

Z1C~Z7C....... #......Noise filter (ferrite core)

Z1F~Z4F ........*......Noise filter

Z1F~Z3F ....... #......Noise filter

Parts table legend

*For V1 models only
#For Y1 models only

9.3. System overview of field wiring

(See figure 9)

1 Earth leakage breaker
2 Field fuse
3 Remote controller

9.4. Precautions on wiring of power supply and
inter-unit wiring

■ Let the power wire (including ground wire and if applicable, the

bottom plate heater wire) go through the power outlet port on
either the front, side or back of the outdoor unit.

■ Let the transmission wires go through the cable outlet port, pipe

outlet port or knock out hole on either the front, side or back of
the outdoor unit. (See figure 8).

A Rear direction
B Lateral direction
C Front direction

1 Power terminal block (X1M)
2 Control wiring between units
3 Power cable with ground wire. (Keep proper distance between

power cable and control wiring).

4 Clamp (field supply)
5 Stop valve mounting plate
6 Power cable
7 Ground cable (yellow/green)
8 Fix the control wiring with the clamp
9 Control terminal block (X2M)

10 Interconnection cable for bottom plate heater (ERRQ only)

Precautions when knocking out knockout holes

■ To punch a knock hole, hit on it with a hammer.

■ After knocking out the holes, we recommend you paint the

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

■ When passing electrical wiring through the knock holes, remove

any burrs from the knock holes and wrap the wiring with
protective tape to prevent damage.

■ If there is any possibility that small animals enter the system

through the knock holes, plug the holes with packing materials
(to be prepared on-site).

Notes

1 This wiring diagram only applies to the outdoor unit.
4 Refer to the wiring diagram sticker (on the back of the

front plate) for instructions on how to use BS1~BS5 and
DS1-1, DS1-2 switches.

5 Do not operate the unit by short-circuiting protection

device S1PH.

7 Refer to the installation manual for connection wiring to

indoor-outdoor transmission F1-F2.

Installation manual

13

1

1 Knockout hole
2 Burr
3 Packing materials

2

Outdoor unit for air to water heat pump

3

ERSQ+ERRQ011~016AAV1+Y1

4PW49635-1A

■ Use a power wire pipe for the power wiring.

1 Round pressure

terminal

2 Power wire

■ Outside the unit, make sure the low voltage electric
wiring (i.e. for the remote control, between units, etc.)
and the high voltage electric wiring do not pass near
each other, keeping them at least 50 mm apart.
Proximity may cause electrical interference,
malfunctions, and breakage.

■ Be sure to connect the power wiring to the power
wiring terminal block and secure it as described under

"9.4. Precautions on wiring of power supply and
inter-unit wiring" on page 13.

■ Inter-unit wiring should be secured as described in

"9.4. Precautions on wiring of power supply and
inter-unit wiring" on page 13.

• Secure the wiring with clamps so that it does not touch

the piping.

• Make sure the wiring and the electric box lid do not

stick up above the structure, and close the cover
firmly.

Precautions when laying power wiring

Use round pressure terminals for connections to the power
terminal block.

When none are available, follow the instructions below.

■ Do not connect wiring of different thicknesses to the
power terminal block. (Slack in the power wiring may
cause abnormal heat.)

■ When connecting wiring which is the same thickness,
do as shown in the figure below.

1 2

9.5. Specifications of standard wiring components

A power circuit (see table below) must be provided for connection of
the unit. This circuit must be protected with the required safety
devices, i.e. a main switch, a slow blow fuse on each phase and an
earth leakage breaker.

ERSQ_V1 ERRQ_V1 ERSQ_Y1 ERRQ_Y1

Phase and frequency 1N~50 Hz 3N~50 Hz

Voltage 220-240 V 380-415 V

Recommended field fuse 32 A 16 A

Minimum circuit amps

Tr ansmission line section 0.75~1.25 mm

(b)

Wire type

(a) Stated values are maximum values (see electrical data of combination with

indoor units for exact values).

(b) Only in protected pipes, use H07RN-F when protected pipes are not used.

NOTE

■ In connecting the power cable to the power terminal block,
securely clamp the cable as shown in figure 8.

After finishing the electric work, confirm that each electric
part and terminal inside the electric parts box is connected
securely.

For V1 models only

(a)

27 A 27.5 A 13.5 A 14 A

2

H05VV

■ Select the power supply cable in accordance with
relevant local and national regulations.

■ Wire size must comply with the applicable local
and national code.

■ Specifications for local wiring power cord and
branch wiring are in compliance with IEC60245.

■ The earth leakage circuit breaker must be a
high-speed type breaker of 300 mA (<0.1 s).

: Equipment complying with EN/IEC 61000-3-12

(1)

.

■ For wiring, use the designated power wire and
connect firmly, then secure to prevent outside
pressure being exerted on the terminal board.

■ Use an appropriate screwdriver for tightening the
terminal screws. A screwdriver with a small head will
strip the head and make proper tightening impossible.

■ Over-tightening the terminal screws may break them.

■ See the table below for tightening torque for the

terminal screws.

Tightening torque (N•m)

M5 (Power terminal block/ground wire) 2.39~2.92
M4 (Shielded ground) 1.18~1.44
M3.5 (Control wiring block) 0.79~0.97

Field line connection: Control wiring

Be sure to follow the limits below. If the unit-to-unit cables
are beyond these limits, it may result in malfunction of
transmission.

Maximum wiring length: 300 m
Total wiring length: 600 m

■ The wiring from the indoor unit must be connected to the F1/F2
(In-Out) terminals on the PC board in the outdoor unit.

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

1 Liquid pipe
2 Gas pipe
3 Interconnecting wiring
4 Insulator

123454

For the above wiring, always use vinyl cords with 0.75 to 1.25 mm
sheath or cables (2-core wires).

5 Finishing tape

2

(1) European/International Technical Standard setting the limits for harmonic

currents produced by equipment connected to public low-voltage systems
with input current >16 A and ≤75 A per phase.

ERSQ+ERRQ011~016AAV1+Y1

Outdoor unit for air to water heat pump

4PW49635-1A

Installation manual

14

10. START-UP AND CONFIGURATION

11. TEST OPERATION AND FINAL CHECK

10.1. Pre-operation checks

■ Make sure that the circuit breaker on the power supply
panel of the installation is switched off.

■ Attach the power wire securely.

■ Introducing power with a missing N-phase or with a

mistaken N-phase will break the equipment.

After the installation, check the following before switching on the
circuit breaker:

1 Transportation stay

Be sure that the transportation stay is removed from the
compressor.

2 Power supply wiring and transmission wiring

Use a designated power supply and transmission wiring and
make sure that it has been carried out according to the
instructions described in this manual, according to the wiring
diagrams and according to local and national regulations.

3 Pipe sizes and pipe insulation

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

4 Additional refrigerant charge

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

5 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.

6 Stop valves

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

11.1. Final check

Items to check

Electrical wiring
Inter-unit wiring
Earth wire

Refrigerant
piping

Extra
refrigerant

■ Be sure to perform a test run.

■ To protect the compressor, make sure to turn on the power

supply 6 hours before starting operation.

■ Be sure to fully open the liquid-side and gas-side stop valves. If
you operate the unit with stop valves closed, the compressor will
break down.

■ Never leave the unit unattended with an open front panel during
test run.

■ After installation, perform the test operation.
Unless the test operation is performed, the error code "U3" is
shown on the remote controller and the unit cannot be operated.

■ During tests never pressurize the appliances with a pressure
higher than the maximum allowable pressure (as indicated on
the nameplate of the unit).

■ Provide a logbook.
In accordance with the relevant national and international
regulations it may be neccesary to provide a logbook with the
equipment containing at least:

- info on maintenance,

- repair work,

- results of tests,

- stand-by periods,

- ...
In Europe, EN378 provides the neccesary guidance for this
logbook.

■ Is the wiring as mentioned on the wiring diagram?
Make sure no wiring has been forgotten and that
there are no missing phases or reverse phases.

■ Is the unit properly earthed?

■ Is the wiring between units connected in series

correct?

■ Are any of the wiring attachment screws loose?

■ Is the insulation resistance at least 1 MΩ?

- Use a 500 V mega-tester when measuring

insulation.

- Do not use a mega-tester for low-voltage circuits.

■ Is the size of the piping appropriate?

■ Is the insulation material for the piping attached

securely?
Are both the liquid and gas pipes insulated?

■ Are the stop valves for both the liquid side and the
gas side open?

■ Did you write down the extra refrigerant and the
refrigerant piping length?

Installation manual

15

11.2. Test run

Perform the test run in accordance with the indoor installation manual
to ensure that all functions and parts are working properly.

NOTE

NOTE

After turning on the power supply, the unit can not be
started until the H2P initialisation led goes off
(maximum 12 minutes).

WARNING

Live parts can be easily touched by accident.
Never leave the unit unattended during installation or

servicing when the service panel is removed.

Note that during the first running period of the unit,
required power input may be higher than stated on the
nameplate of the unit. This phenomenon originates
from the compressor that needs elapse of a 50 hours
run in period before reaching smooth operation and
stable power consumption.

Outdoor unit for air to water heat pump

ERSQ+ERRQ011~016AAV1+Y1

4PW49635-1A

12. MAINTENANCE AND SERVICING

12.1. Service precautions

WARNING: ELECTRIC SHOCK

Caution when performing service to inverter equipment

■ Do not touch live parts for 10 minutes after the power supply is
turned off because of high voltage risk.

■ Additionally, measure the points as shown in figure 10 with a
tester and confirm that the voltage of the capacitor in the main
circuit is no more than 50 V DC.

■ Make sure that the power supply is turned off before performing
the maintenance work. The heater of the compressor may
operate even in stop mode.

■ Please note that some sections of the electric component box
are extremely hot.

■ In order to prevent damage to the PCB, first eliminate static
electricity by touching a metal part (e.g. stop valve) with your
hand. Then pull out the connector.

■ After measuring the residual voltage, pull out the outdoor fan
connector.

■ Make sure you do not touch a conductive section.

■ The outdoor fan may rotate due to strong backblow wind,

causing the capacitor to charge. This may result in an electric
shock.

After maintenance, make sure the outdoor fan connector is
connected again. Otherwise, the unit may break down.

Play it safe!

Touch a metal part by hand (such as the stop valve) in
order to eliminate static electricity and to protect the PCB
before performing service.

12.2. Service mode operation

If required, carry out any service mode operation according to the
following instructions. Refer to the service manual for more details.

Setting the mode

The set mode can be changed with the button according
to the following procedure:

■ For setting mode 1: Press the button once, the
H1P LED is off x.

■ For setting mode 2: Press the button for
5 seconds, the H1P LED is on w.

If the H1P LED is blinking c and the button is pushed
once, the setting mode will change to setting mode 1.

NOTE

If you get confused in the middle of the setting
process, push the button. Then it returns to

BS1 MODE

setting mode 1 (H1P LED is off).

Location of the dip switches, LEDs and buttons

Led H1P~H8P

1

Push button switches BS1~BS5

2

DIP switches

3

(do not use or change)

LED state

Throughout the manual the state of the LEDs is indicated as follows:

x

OFF

w

ON

BS1 MODE

BS1 MODE

BS1 MODE

BS1 MODE

c

1

2

blinking

3

3

Setting the mode

1 Push the button to set the required function

(refrigerant recovery operation/vacuuming operation) to

BS2 SET

ON

(ON).
The H3P, H5P and H7P LEDs are on.

H1P H2P H3P H4P H5P H6P H7P

wxwxwxw

2 When the button is pushed, the LEDs are

indicating the current setting.

3 To set this function (ON) or (OFF), push the

button as shown below.

4 Push the button and the setting is defined.

5 When the button is pushed again, the operation

starts according to the setting.

Vacuuming method

At the first installation, this vacuuming is not required. It is required
only for repair purposes.

1 When the unit is at a standstill and under the setting mode 2, set

the required function (refrigerant recovery operation/vacuuming
operation) to (ON).

- After this is set, do not reset the setting mode 2 until the
vacuuming is finished.

- The H1P led is on and the remote controller indicates
(test operation) and (external control) and the
operation will be prohibited.

2 Vacuum the system with a vacuum pump.

3 Press the button and reset the setting mode 2.

Refrigerant recovery operation method by a refrigerant
reclaimer.

1 When the unit is at a standstill and in setting mode 2, set the

required function (refrigerant recovery operation/vacuuming
operation) to (ON).

- The indoor unit and the outdoor unit expansion valves will
fully open and some solenoid valves will open.

- The H1P led is on and the remote controller indicates
(test operation) and (external control) and the
operation will be prohibited.

2 Recover the refrigerant using a refrigerant reclaimer. For details,

see the operation manual delivered with the refrigerant
reclaimer.

3 Press the button and reset the setting mode 2.

BS3 RETURN

ON

H1P H2P H3P H4P H5P H6P H7P

ON

OFF

BS3 RETURN

BS3 RETURN

BS1 MODE

BS1 MODE

w xxxxcx

(a)

w xxxxxc

(a) This setting = factory setting

ON

ON

OFF

BS2 SET

CAUTION

Never turn the power of the outdoor unit OFF while the
refrigerant is being recovered.

If the power is turned OFF, the solenoid valves are closed
and the refrigerant cannot be recovered from the outdoor
unit.

ERSQ+ERRQ011~016AAV1+Y1

Outdoor unit for air to water heat pump

4PW49635-1A

Installation manual

16

Pump down operation

13. DISPOSAL REQUIREMENTS

This unit is equipped with an automatic pump down operation which
will collect all refrigerant from the field piping and indoor unit in the
outdoor unit. To protect the environment, make sure to perform the
following pump down operation when relocating or disposing of the
unit.

■ The outdoor unit is equipped with a low pressure
switch or a low pressure sensor to protect the
compressor by switching it off. Never short-circuit the
low pressure switch during pump down operation!

■ Do not execute the pump down operation if the piping
length between the outdoor unit and the indoor unit is
longer than 10 m. This may cause damage to the unit.

1. Tu rn on the main power supply.

2. Make sure the liquid stop valve is closed and the gas stop valve

is open (see "6.3. Guidelines for handling stop valve" on

page 8).

3. Switch the service mode 2-61 from OFF to ON.

4. The compressor and outdoor unit fan will start operating

automatically.
During operation, the LEDs are showing the progress as shown
in the figure.

H1P H2P H3P H4P H5P H6P H7P

Step 1

Step 2

Step 3

Step 4

Step 5

xcwwwww
xcxwwww
xcx xwww
xcxxxww
xcxxxxw

5. If step 5 is reached (pressure drops below 3 bar) or if operation
stops (after 30 minutes), close the gas stop valve.

6. Tu rn off the main power supply.

Dismantling of the unit, treatment of the refrigerant, of oil and of other
parts must be done in accordance with relevant local and national
legislation.

14. UNIT SPECIFICATIONS

Technical specifications

Casing material Painted galvanised steel
Dimensions h x w x d
Weight
Operation range

• heating (min./max) (°C)

• domestic hot water
(min./max)

Refrigerant oil
Piping connection

• liquid (mm)

• gas (mm)

(mm)

(kg)

(°C)

011 014 016

1345 x 900 x 320 1345 x 900 x 320 1345 x 900 x 320

120 120 120

–20/20 –20/20 –20/20
–20/35 –20/35 –20/35

Daphne FVC68D Daphne FVC68D Daphne FVC68D

9.52 9.52 9.52

15.9 15.9 15.9

Electrical specifications

011 014 016

Phase 1N~ 3N~ 1N~ 3N~ 1N~ 3N~
Frequency
Voltage range

•minimum (V)

•maximum (V)

Nominal running current (A) 15.9 5.3 20.2 6.77 22.2 7.79

V1 Y1 V1 Y1 V1 Y1

(Hz)

50 50 50

220/380 220/380 220/380
240/415 240/415 240/415

Model

Model

Make sure to re-open both stop valves before restarting
operation of the unit.

Installation manual

17

Outdoor unit for air to water heat pump

ERSQ+ERRQ011~016AAV1+Y1

4PW49635-1A

8

1

Y1

9

7
6

9

1
2

V1-type

1N~ 50 Hz

220-240 V

1
2

L1 L3L2

Y1-type

3N~ 50 Hz

380-415 V

10

X2M

X1M

X1MX2M

L1 L3L2

8

X2MX3M

3

2

3

X2M X3M

3

9

4

4

10

V1

V1

9

X106A X107A

A1P

A2P

A4P

2

1

6

8

7

X2M

A1P

10

2

4
3

4

Y1

5

3

10

2

C

}

3+10

8

NOTES

3+10

3+10

C+

2
2

A

}

2

B

}

C–

10

4PW49635-1A

Copyright © Daikin