Daikin EKHVMRD50AAV1, EKHVMRD80AAV1, EKHVMYD50AAV1, EKHVMYD80AAV1 Installation manual

INSTALLATION MANUAL

Daikin Altherma indoor unit

EKHVMRD50AAV1
EKHVMRD80AAV1

EKHVMYD50AAV1
EKHVMYD80AAV1

CE - ATITIKTIES-DEKLARACIJA

CE - ATBILSTĪBAS-DEKLARĀCIJA

CE - VYHLÁSENIE-ZHODY

CE - UYUMLULUK-BİLDİRİSİ

CE - IZJAVA O SKLADNOSTI

CE - VASTAVUSDEKLARATSIOON

CE - ДЕКЛАРАЦИЯ-ЗА-СЪОТВЕТСТВИЕ

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:

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

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CE - IZJAVA-O-USKLAĐENOSTI

CE - MEGFELELŐSÉGI-NYILATKOZAT

CE - DEKLARACJA-ZGODNOŚCI

CE - DECLARAŢIE-DE-CONFORMITATE

19 Direktive z vsemi spremembami.

10 Direktiver, med senere ændringer.

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:

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

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

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instrukcjami:

conformitate cu instrucţiunile noastre

инструкции:

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

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

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

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

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

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

s našim návodom:

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

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

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

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

01 Directives, as amended.

20 Direktiivid koos muudatustega.

21 Директиви, с техните изменения.

22 Direktyvose su papildymais.

23 Direktīvās un to papildinājumos.

24 Smernice, v platnom znení.

25 Değiştirilmiş halleriyle Yönetmelikler.

Direktiivejä, sellaisina kuin ne ovat muutettuina.

11 Direktiv, med företagna ändringar.

02 Direktiven, gemäß Änderung.

irányelv(ek) és módosításaik rendelkezéseit.

12 Direktiver, med foretatte endringer.

13

14 v platném znění.

15 Smjernice, kako je izmijenjeno.

16

17 z późniejszymi poprawkami.

18 Directivelor, cu amendamentele respective.

03 Directives, telles que modifiées.

04 Richtlijnen, zoals geamendeerd.

05 Directivas, según lo enmendado.

06 Direttive, come da modifica.

07 √‰ËÁÈÒv, fiˆ˜ ¤¯Ô˘Ó ÙÚÔÔÔÈËı›.

08 Directivas, conforme alteração em.

09 Директив со всеми поправками.

<B>

положително от <B> съгласно

Cертификата <C>.

pagal Sertifikatą <C>.

vērtējumam saskaņā ar sertifikātu <C>.

21 Забележка * както е изложено в <A> и оценено

22 Pastaba * kaip nustatyta <A> ir kaip teigiamai nuspręsta

23 Piezīmes * kā norādīts <A> un atbilstoši <B> pozitīvajam

a(z) <C> tanúsítvány szerint.

<B> i Świadectwem <C>.

de <B> în conformitate cu Certificatul <C>.

<A> DAIKIN.TCF.025D3/04-2010

<B> KEMA (NB0344)

<C> 2082543.0551-QUA/EMC

súlade s osvedčením <C>.

<A>‘da belirtildiği gibi ve <C> Sertifikasına

göre <B> tarafından olumlu olarak

değerlendirildiği gibi.

*

Not

24 Poznámka * ako bolo uvedené v <A> a pozitívne zistené <B> v

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skladu s certifikatom <C>.

kiidetud <B> järgi vastavalt sertifikaadile <C>.

CE - ERKLÆRING OM-SAMSVAR

CE - ILMOITUS-YHDENMUKAISUUDESTA

CE - PROHLÁŠENÍ-O-SHODĚ

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

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

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CE - FÖRSÄKRAN-OM-ÖVERENSTÄMMELSE

CE - DECLARAÇÃO-DE-CONFORMIDADE

СЕ - ЗАЯВЛЕНИЕ-О-СООТВЕТСТВИИ

CE - OPFYLDELSESERKLÆRING

CE - DECLARACION-DE-CONFORMIDAD

CE - DICHIARAZIONE-DI-CONFORMITA

CE - ¢H§ø™H ™YMMOPºø™H™

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:

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:

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12

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

ilmoittaa yksinomaan omalla vastuullaan, että tämän ilmoituksen tarkoittamat laitteet:

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la declaración:

referencia

acordo com as nossas instruções:

инструкциям:

instrukser:

förutsättning att användning sker i överensstämmelse med våra instruktioner:

disse brukes i henhold til våre instrukser:

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

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

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

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

mukaisesti:

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

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

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

15 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

Electromagnetic Compatibility 2004/108/EC *

19 ob upoštevanju določb:

20 vastavalt nõuetele:

21 следвайки клаузите на:

22 laikantis nuostatų, pateikiamų:

23 ievērojot prasības, kas noteiktas:

24 održiavajúc ustanovenia:

25 bunun koşullarına uygun olarak:

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

17 Uwaga * zgodnie z dokumentacją <A>, pozytywną opinią

18 Notă * aşa cum este stabilit în <A> şi apreciat pozitiv

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

och godkänts av <B> enligt

Certifikatet <C>.

bedømmelse av <B> ifølge Sertifikat <C>.

hyväksynyt Sertifikaatin <C> mukaisesti.

souladu s osvědčením <C>.

12 Merk * som det fremkommer i <A> og gjennom positiv

14 Poznámka * jak bylo uvedeno v <A> a pozitivně zjištěno <B> v

13 Huom * jotka on esitetty asiakirjassa <A> ja jotka <B> on

11 Information * enligt <A>

da <B> secondo il Certificato <C>.

06 Nota * delineato nel <A> e giudicato positivamente

07 ™ËÌ›ˆÛË * fiˆ˜ ηıÔÚ›˙ÂÙ·È ÛÙÔ <A> Î·È ÎÚ›ÓÂÙ·È ıÂÙÈο

положительным решением <B> согласно

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

·fi ÙÔ <B> Û‡Ìʈӷ Ì ÙÔ ¶ИЫЩФФИЛЩИОfi <C>.

09 Примечание * как указано в <A> и в соответствии с

08 Nota * tal como estabelecido em <A> e com o parecer

20 Märkus * nagu on näidatud dokumendis <A> ja heaks

strane <B> prema Certifikatu <C>.

15 Napomena * kako je izloženo u <A> i pozitivno ocijenjeno od

Свидетельству <C>.

henhold til Certifikat <C>.

10 Bemærk * som anført i <A> og positivt vurderet af <B> i

Jean-Pierre Beuselinck

General Manager

Ostend, 1st of June 2010

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:

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f

l

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CE - DECLARATION-OF-CONFORMITY

CE - KONFORMITÄTSERKLÄRUNG

CE - DECLARATION-DE-CONFORMITE

CE - CONFORMITEITSVERKLARING

Daikin Europe N.V.

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10 under iagttagelse af bestemmelserne i:

11 enligt villkoren i:

12 gitt i henhold til bestemmelsene i:

13 noudattaen määräyksiä:

14 za dodržení ustanovení předpisu:

15 prema odredbama:

16 követi a(z):

17 zgodnie z postanowieniami Dyrektyw:

18 în urma prevederilor:

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:

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EKHVMYD50AAV1, EKHVMYD80AAV1,

EKHVMRD50AAV1, EKHVMRD80AAV1,

instructions:

daß sie gemäß unseren Anweisungen eingesetzt werden:

onze instructies:

nuestras instrucciones:

nostre istruzioni:

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

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

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

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

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

Û‡Ìʈӷ Ì ÙȘ Ô‰ËÁ›Â˜ Ì·˜:

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

07 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

01 following the provisions of:

EN60335-2-40,

02 gemäß den Vorschriften der:

03 conformément aux stipulations des:

04 overeenkomstig de bepalingen van:

05 siguiendo las disposiciones de:

06 secondo le prescrizioni per:

07 Ì ًÚËÛË Ùˆv ‰È·Ù¿Íˆv Ùˆv:

08 de acordo com o previsto em:

09 в соответствии с положениями:

according to the Certificate <C>.

beurteilt gemäß Zertifikat <C>.

<B> conformément au Certificat <C>.

<B> overeenkomstig Certificaat <C>.

positivamente por <B> de acuerdo con el

Certificado <C>.

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

02 Hinweis * wie in der <A> aufgeführt und von <B> positiv

03 Remarque * tel que défini dans <A> et évalué positivement par

04 Bemerk * zoals vermeld in <A> en positief beoordeeld door

05 Nota * como se establece en <A> y es valorado

3PW60973-2

EKHVMRD50+80AAV1
EKHVMYD50+80AAV1

Daikin Altherma indoor unit

Installation manual

CONTENTS Page

1. Definitions .................................................................................. 2

2. General safety precautions........................................................2

3. Introduction ................................................................................ 3

3.1. General information ........................................................................3

3.2. Combination and options ............................................................... 3

3.3. Scope of the manual ...................................................................... 4

3.4. Model identification......................................................................... 4

4. Accessories ............................................................................... 4

4.1. Accessories supplied with this unit.................................................4

5. Overview of unit ......................................................................... 4

5.1. Opening the unit .............................................................................4

5.2. Main components in the unit .......................................................... 5

Reversible unit (EKHVMYD)...........................................................5

Heating only unit (EKHVMRD) ....................................................... 8

5.3. Switch box main components.......................................................11

6. Design of the water circuit........................................................ 11

6.1. Selection of the type of heat emitters ...........................................11

For heating mode ......................................................................... 11

For cooling mode.......................................................................... 11

6.2. General precautions concerning water circuit.............................. 12

6.3. Application examples for heating only units ................................. 13

Floor heating without tank ............................................................ 13

Radiator with tank......................................................................... 13

Fan coils without tank................................................................... 14

Application examples with several heat emitters.......................... 14

6.4. Application examples for reversible units .....................................15

6.5. Selection of meters for billing purpose ......................................... 15

Billing application examples ......................................................... 16

7. Installation of the unit...............................................................18

7.1. Selecting an installation location .................................................. 18

General precautions on installation location................................. 18

7.2. Dimensions and service space ....................................................19

Dimensions of unit........................................................................ 19

Service space of the unit..............................................................21

7.3. Inspecting, handling and unpacking the unit ................................21

7.4. Installing the unit .......................................................................... 21

Preparation before installation on final installation place .............21

Installation on final installation position ........................................23

Connecting the water circuit.........................................................23

Fix the indoor unit refrigerant connections ................................... 24

Close the unit ...............................................................................24

7.5. Leak test and vacuuming drying R410A circuit............................ 25

7.6. Water piping ................................................................................. 25

Checking the water volume and expansion

vessel pre-pressure...................................................................... 25

Setting the pre-pressure of the expansion vessel ........................26

Charging water.............................................................................27

8. Electrical wiring work ...............................................................27

8.1. Precautions on electrical wiring work........................................... 27

8.2. Internal wiring – Parts table..........................................................28

8.3. System overview of field wiring .................................................... 29

8.4. Requirements ...............................................................................29

8.5. Routing .........................................................................................30

8.6. Connection ................................................................................... 30

Installation and connection of the remote controller..................... 31

Connection to a benefit kWh rate power supply........................... 32

9. Start-up and configuration ....................................................... 33

9.1. Pre-operation checks ................................................................... 33

9.2. Final air purging............................................................................ 34

9.3. Field settings ................................................................................ 34

9.4. Procedure .....................................................................................34

9.5. Detailed description......................................................................35

9.6. Simultaneous demand of space heating and domestic water

heating.......................................................................................... 42

9.7. Simultaneous demand of space cooling and domestic water

heating.......................................................................................... 46

9.8. Multiple set point control............................................................... 46

9.9. Field setting table ......................................................................... 49

10. Final check and test run...........................................................52

10.1. Final check...................................................................................52

Multi tenant power supply check .................................................. 52

10.2. System test run ............................................................................52

10.3. Indoor unit individual test run .......................................................52

Temperature read-out mode......................................................... 52

Procedure for space heating/cooling............................................ 52

Procedure for domestic water heating.......................................... 53

11. Maintenance and service .........................................................53

11.1. Maintenance activities.................................................................. 53

Checks .........................................................................................54

11.2. Important information regarding the refrigerant used................... 54

11.3. Vacuuming/recovery and maintenance on refrigerant side .......... 55

System overview .......................................................................... 56

Recovery/vacuuming overview for 1 indoor unit maintenance

(R410A circuit connections) .........................................................56

12. Troubleshooting........................................................................ 56

12.1. General guidelines .......................................................................56

12.2. Opening the unit........................................................................... 56

12.3. Draining the system......................................................................57

12.4. General symptoms.......................................................................57

12.5. Error codes................................................................................... 58

13. Unit specifications ....................................................................59

Technical specifications................................................................ 59

Electrical specifications: power supply.........................................59

Electrical specifications: multi tenant power supply......................59

Thank you for purchasing this product.

The original instructions are written in English. All other languages
are translations of the original instructions.

CAREFULLY READ THESE INSTRUCTIONS BEFORE
INSTALLATION. THEY WILL TELL YOU HOW TO INSTALL
AND HOW TO CONFIGURE THE UNIT PROPERLY.
KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE
REFERENCE.

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

1

1. DEFINITIONS

2. GENERAL SAFETY PRECAUTIONS

Installation manual:

Instruction manual specified for a certain product or application,
explaining how to install, configure and maintain it.

Danger:

Indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.

Warning:

Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.

Caution:

Indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury. It may also be used to alert against
unsafe practices.

Note:

Indicates situations that may result in equipment or property-damage
accidents only.

Dealer:

Sales distributor for products as per the subject of this manual.

Installer:

Technical skilled person who is qualified to install products as per the
subject of this manual.

Service agent:

Qualified person who can perform or coordinate the required service
to the unit.

Legislation:

All international, European, national and local directives, laws,
regulations and/or codes which are relevant and applicable for a
certain product or domain.

Accessories:

Equipment which is delivered with the unit and which needs to be
installed according to instructions in the documentation.

Optional equipment:

Equipment which can optionally be combined to the products as per
the subject of this manual.

Field supply:

Equipment which needs to be installed according to instructions in
this manual, but which are not supplied by Daikin.

All activities described in this manual shall be carried out by an
installer.

Be sure to wear adequate personal protection equipment (protection
gloves, safety glasses, …) when performing installation, maintenance
or service to the unit.

If not sure of installation procedures or operation of the unit, always
contact your local dealer for advice and information.

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 and optional
equipment made by Daikin which are specially designed for use with
the products as of subject in this manual and have them installed by
an installer.

DANGER: ELECTRICAL SHOCK

Switch off all power supply before removing the switchbox
service panel or before making any connections or
touching electrical parts.

To avoid electric shock, be sure to disconnect the power
supply 1 minute or more before servicing the electrical
parts. Even after 1 minute, always measure the voltage at
the terminals of main circuit capacitors or electrical parts
and, before touching, be sure that those voltages are
50 V DC or less.

When service panels are removed, live parts can easily be
touched by accident. Never leave the unit unattended
during installation or servicing when the service panel is
removed.

DANGER: DO NOT TOUCH PIPING AND INTERNAL
PA RT S

Do not touch the refrigerant piping, water piping or internal
parts during and immediately after operation. The piping
and internal parts may be hot or cold depending on the
working condition of the unit.

Your hand may suffer burns or frostbite if you touch the
piping or internal parts. To avoid injury, give the piping and
internal parts time to return to normal temperature or, if
you must touch them, be sure to wear protective gloves.

Installation manual

2

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

3. INTRODUCTION

3.1. General information

This installation manual concerns Daikin Altherma air to water
inverter heat pump units of the Daikin EKHVMRD and EKHVMYD
series.

These units are intended for indoor installation and aimed for
apartment or other multi user buildings.

The unit is designed for floor standing heating operation. The
EKHVMYD units can also perform cooling operation. The heat taken
from the indoors' during cooling operation can be stored in the
domestic hot water tank (=heat recovery operation).

EKHVMRD units can only perform heating operation.

EKHVMRD units have heating capacity ranges of 5.6 kW and 9 kW.

EKHVMYD units have heating capacity ranges of 5.6 kW and 9 kW
and cooling capacities of 5 kW and 8 kW.

The indoor units are designed to work in heating and cooling mode at
indoor ambient temperatures from 5°C to 30°C.

During heating operation, the unit can heat up the water to
temperatures of 25°C to 80°C.

During cooling operation (only for EKHVMYD) the unit can cool down
the water to temperatures of 5°C to 20°C.

3.2. Combination and options

The EKHVMRD and EKHVMYD units can only be combined with an
outdoor EMRQ unit.

During heating operation, the unit can be combined with space
heating radiators (field supply), fan coil units (option or field supply) or
floor heating (field supply).

During cooling operation, the unit can be combined with fan coils
(option or field supply).

The remote controller with room thermostat functionality is standard
supplied with this unit to control your installation.

Domestic hot water tank (option)

An optional EKHTS200AB or EKHTS260AB domestic hot water tank
can be connected to the indoor unit. The domestic hot water tank has
a water volume of 200 l or 260 l.

Refer to the domestic hot water tank installation manual for further
details.

Heat pump convector (option)

An optional FWXV convector for cooling or heating operation can be
connected to this indoor unit.

Refer to the heat pump convector installation manual for further
details.

Remote controller (option)

An optional secondary EKRUAHT remote controller (with room
thermostat functionality) can be connected to the indoor unit.
Purpose is to provide the possibility to install the standard remote
controller near the unit (for service reasons), and install another
remote controller in another place (e.g. living room) to operate your
installation.

Refer to "Installation and connection of the remote controller" on

page 31 for further details.

Room thermostat (option)

An optional room thermostat EKRTR or EKRTW can be connected to
the indoor unit.

Refer to the room thermostat installation manual for further details.

Heater kit (option)

An optional EKBUH heater kit can be combined with the indoor unit.
Purpose is to provide an additional heating capacity during cold
outdoor temperatures. The heater kit has a heating capacity of 6 kW,
and available for both 1-phase and 3-phase power supply
specifications. When using this heater kit, installation of the optional
demand PCB is required as well.

Refer to the heater kit installation manual for further details.

P

H

2

3

1

T

A

1 Heat pump capacity
2 Required heating capacity (site dependent)
3 Additional heating capacity provided by the heater kit

T

Ambient (outdoor) temperature

A

P

Heating capacity

H

Digital I/O PCB (option)

An optional EKRP1HBAA digital I/O PCB can be connected to the
indoor unit and be used to remotely monitor your system. This
address card offers 2 voltage free outputs and 1 high voltage
(230 V AC) output.

Refer to the operation manual of the indoor unit and to the digital I/O
PCB installation manual for more information.

Refer to the wiring diagram or connection diagram for connecting this
PCB to the unit.

Demand PCB (option)

An optional EKRP1AHTA demand PCB can be connected to the
indoor unit. This PCB is needed when the optional heater kit EKBUH
or Daikin room thermostat EKRTR or EKRTW is installed or when
multiple set point control is used, and provides the communication
with the indoor unit.

Refer to the demand PCB installation manual for further details.

Refer to the wiring diagram or connection diagram for connecting this
PCB to the unit.

Individual billing system (field supply).

The Daikin Altherma system uses a common outdoor unit for the
different indoor units. Depending of local regulations, the customer is
free to choose the allocation method of the common electrical power
consumption costs of the outdoor unit.

Daikin advises an allocation method based on the measurements of
consumed heat of each indoor unit. In other words, the outdoor unit
energy input is allocated according the indoor unit energy output. An
individual billing system calculation tool is available on demand.
Contact your local dealer.

Refer to "6. Design of the water circuit" on page 11 for further details.

Cooling output (field supply)(only for EKHVMYD)

This is a 230 V AC output (maximum 0.3 A) which is on during
cooling operation. This can be used to connect a valve which shuts
off radiators to avoid sweat during cooling operation. Refer to

"6.4. Application examples for reversible units" on page 15.

If this option is installed it is not possible to use the remote
controller thermostat function.

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

3

3.3. Scope of the manual

This manual does NOT include the selection procedure and the water
system design procedure. Only some precautions and tips and tricks
about the design of the water circuit are given in a separate chapter
of this manual. Also included in this separate chapter are the
guidelines for installation of the meters for billing purposes.

Once the selection is done and the water system is designed, this
manual describes the procedures for handling, installing and
connecting the EKHVMYD and EKHVMRD units. This manual has
been prepared to ensure adequate maintenance of the unit, and it will
provide help if problems occur.

11 Kit for lifting the unit
12 Flexible water outlet piping
13 Flexible water inlet piping (with manometer)
14 Support plate
15 Piping
16 Stop valves

5. OVERVIEW OF UNIT

NOTE

Refer to the installation manual of the outdoor unit for
items not described in this manual.

The operation of the indoor unit is described in the
indoor unit operation manual.

3.4. Model identification

EK HV M R/YD 50 AA V1

1N~, 220-240 V, 50 Hz

Series

Identification of the unit capacity

RD = Heating only unit
YD = Reversible unit

Multi

Hydrobox

European kit

4. ACCESSORIES

4.1. Accessories supplied with this unit

Following accessories can be found in the unit.

12 31x46

1x 6x1x 1x 1x1x

9101x11

1x2x

1x121x

+

85

8x74x

13

5.1. Opening the unit

To gain access to the unit, top plate, the drip plates and the front plate
need to be opened.

1

2

2

5

Once the unit is opened, access is possible to the main components.

To gain access to the electrical components, switch box needs to be
opened:

4

3

1 Top plate
2 Drip plate
3 Front plate
4 Sound plate
5 Side plate

4

5

14

1x

1 Installation manual
2 Operation manual
3 Addendum installation manual
4 Wiring diagram
5 User interface kit (remote controller, 4 fixing screws, 2 plugs)
6 Top plate fixing screws + sound bottom plate fixing screws +

lifting fixing screws (8 screws)

7 Stop valve fixing screws (6 screws)
8 Grommet (small)
9 Grommet (large)

10 Top plate insulation

Installation manual

15

6x

16

3x

4

4x

DANGER: ELECTRICAL SHOCK

See "2. General safety precautions" on page 2.

DANGER: DO NOT TOUCH PIPING AND INTERNAL
PA RT S

See "2. General safety precautions" on page 2.

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

5.2. Main components in the unit

Reversible unit (EKHVMYD)

10

14

4

6

3

1

12 12

11
8

15

13

26
25

20

9
7

24

16

2

65

4

19
23
22

21

17

18

1 R134a accumulator 14 Flow switch
2 R134a compressor 15 Expansion vessel (cooling/heating)
3 R134a discharge muffler 16 Expansion vessel (heating/domestic hot water heating)
4 R134a low pressure sensor 17 Heating plate heat exchanger
5 R134a high pressure switch 18 Cascade plate heat exchanger
6 R134a high pressure sensor 19 Cooling plate heat exchanger
7 R134a expansion valve 20 Cooling pump
8 R410A cooling expansion valve 21 R410A suction connection

9 R410A heating expansion valve 22 R410A discharge gas connection
10 Heating pump 23 R410A liquid connection
11 Cooling/heating 3-way valve 24 Switchbox
12 Air purge 25 Service port R134a high
13 Safety valve 26 Service port R134a low

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

5

R11T

R4T

R10T

Sensor information:

• R3T = R410A liquid temperature

• R4T = Water return temperature

• R5T = Heating leaving water temperature

• R6T = R134a discharge temperature

• R7T = R134a liquid temperature

• R9T = Cooling leaving water temperature

• R10T = R410A liquid temperature (cooling)

• R11T = R410A suction temperature

R6T

R9T

R5T

R3T

R7T

Installation manual

6

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

24

1

2

18

19

A/B

9

8

3

18

20

6

K3S
SV

14

R5T

Q2L

15

M1P

21

K2S

M

16

17

R4T

17

6

S1PH

10

B1PH

R6T

4

B1PL

7

5

6

11

R3T

12

13 13

K1E

K2E

6

R11T

R7T

6

25

M2P

R9T

15

R10T

K3E

22

16

K1S

M

23

21

22

AB

1 Refrigerant side 22 Safety valve

2 Outdoor unit (EMRQ) 23 Pressure gauge

3 Option domestic hot water tank 24 Flowswitch

4 Muffler 25 Cooling heat exchanger

5 Check valve A Install the 3-way valve in case of domestic hot water tank

6 Filter B Standard

7 Field piping Ø12.7 S1PH High pressure switch

8 Field piping Ø9.52 B1PL Low pressure sensor

9 Field piping Ø15.9 B1PH High pressure sensor
10 Compressor K1E Electronic expansion valve (R410A; heating)
11 Accumulator K2E Electronic expansion valve (R134a)
12 Cascade heat exchanger K3E Electronic expansion valve (R410A; cooling)
13 Service port Q2L Thermistor protector water piping
14 Heating heat exchanger K1S 3-way valve
15 Drain port K2S 3-way valve (cooling/heating)
16 Expansion vessel K3S Solenoid valve
17 Air purge M1P Pump (heating)
18 Shut-off valve M2P Pump (cooling)
19 Water outlet Heating
20 Water inlet Cooling
21 Blow off

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

7

Heating only unit (EKHVMRD)

16

15 10

4

6

5

3

1

2

9

8
7

16

11

18

41365

15

14

12

1 R134a accumulator 11 Expansion vessel
2 R134a compressor 12 Heating plate heat exchanger
3 R134a discharge muffler 13 Cascade plate heat exchanger
4 R134a low pressure sensor 14 R410A discharge gas connection
5 R134a high pressure switch 15 R410A liquid connection
6 R134a high pressure sensor 16 Switchbox
7 R134a expansion valve 17 Service port R134a high
8 R410A heating expansion valve 18 Service port R134a low
9 Heating pump

10 Air purge

17

Installation manual

8

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

R6T

Sensor information:

• R3T = R410A liquid temperature

• R4T = Water return temperature

• R5T = Heating leaving water temperature

• R6T = R134a discharge temperature

• R7T = R134a liquid temperature

R4T

R7T

R5T

R3T

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

9

1

2

17

18

A/B

7

8

S1PH

B1PH

R6T

R5T

5

Q2L

3

4

13

M1P

R4T

B1PL

6

9

16

17

6

19

14

11

6

15

22

20

21

10

R3T

12 12

K1E

K2E

R7T

6

K1S

M

AB

1 Refrigerant side 17 Shut-off valve
2 Outdoor unit (EMRQ) 18 Water outlet
3 Option domestic hot water tank 19 Water inlet
4 Muffler 20 Blow off
5 Check valve 21 Safety valve
6 Filter 22 Pressure gauge
7 Field piping Ø12.7 A Install the 3-way valve in case of domestic hot water tank
8 Field piping Ø9.52 B Standard

9 Compressor S1PH High pressure switch
10 Accumulator B1PL Low pressure sensor
11 Cascade heat exchanger B1PH High pressure sensor
12 Service port K1E Electronic expansion valve (R410A)
13 Heating heat exchanger K2E Electronic expansion valve (R134a)
14 Drain port K1S 3-way valve
15 Expansion vessel Q2L Thermistor protector water piping
16 Air purge M1P Pump

Installation manual

10

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

5.3. Switch box main components

6. DESIGN OF THE WATER CIRCUIT

62 161718 21 15 10

8

15

22
11

12

7

13

1

19
20

14

4

1. Main PCB

2. Control PCB

3. Inverter PCB

4. QA PCB

5. Filter PCB

6. Multi tenant PCB

7. Digital I/O PCB (optional)

8. Demand PCB (optional)

9. Terminal block X1M

Main terminal block which allows easy connection of field wiring
for power supply.

10. Terminal block X2M

Field wiring terminal block for high voltage connections.

11. Terminal block X3M

Field wiring terminal block for low voltage connections.

12. DC connector X1Y/X4Y

13. AC connector X3Y

14. Pump connector X2Y

15. Cable tie mountings

The cable tie mountings allow to fix the field wiring with cable
ties to the switch box to ensure strain relief.

16. Power wiring entry

17. High voltage field wiring entry

18. Low voltage field wiring entry

19. Compressor cable entry

20. Interface relay K1A

21. Interface relay K2A

22. Interface relay K3A

23. Wiring bridges

15

9
23

5

3

The purpose of this chapter is to give guidelines for the design of the
water circuit.

Precautions and guidelines that have impact to the unit prescribed in
this manual are included into this chapter.

Actions needed during the installation of the unit prescribed in this
manual are described in the chapter "7.6. Water piping" on page 25.

WARNING

It is strongly recommended to install an additional filter on
the heating water circuit. Especially to remove metallic
particles from the field heating piping, it is advised to use a
magnetic or cyclone filter which can remove small
particles. Small particles can damage the unit and will not
be removed by the standard filter of the heat pump unit.

6.1. Selection of the type of heat emitters

The selection of the heat emitter is the choice of the end customer.
The choice of the heat emitter will define the needed water
temperature from the unit.

For heating mode

Based on the needed water temperature for the heat emitters,
following range can be defined:

1. Low temperature (Leaving water temperature range from 25°C

to 40°C).
Typical example: floor heating.

2. Medium temperature (Leaving water temperature range from

40°C to 55°C).
Typical example: low temperature radiators or convectors.

3. High temperature (Leaving water temperature range from 55°C

to 75°C).
Typical example: radiators.

For cooling mode

Fan coil units are advised as heat emitters.

NOTE

In a house a combination of the above mentioned heat emitters is
possible.

Once the heat emitters are chosen, the capacity of these heat
emitters should be defined and from this the dimensioning and
position of the heat emitters in the different rooms should be decided.

An important parameter of the heat emitters is the temperature
difference between entering water and leaving water.

This will define the water flow in the system.

Finally, the piping layout from the heat source to the different heat
emitters needs to be drawn.

This will finally define following important parameters:

■ Minimal water volume in the system.

■ Maximal water volume in the system.

■ Minimal and maximal water flow in system.

■ Maximal pressure drop in the system.

■ If floor cooling is used, it is the responsibility of the

installer to take the needed precautions to avoid
floor sweating.

■ The draining of the fancoil units are the
responsibility of the installers.

■ When radiators are used, a shut-off valve must be
installed to avoid sweating of the radiators. (Refer
to "6.3. Application examples for heating only

units" on page 13).

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

11

NOTE

1 Air to water pump system
2 Balancing bottle
3 High external static pressure pump
4 High external static pressure system

In refurbishment applications, the water system will
already be fixed. It is utmost important for these kind of
installations to know the parameters mentioned above.

6.2. General precautions concerning water circuit

Before continuing the installation of the unit, check the following
points:

■ The maximum water pressure is 4 bar.

■ The maximum water temperature is 80°C.

■ Provide adequate safeguards in the water circuit to be sure that

the water pressure will never exceed the maximum allowable
working pressure (4 bar).

■ Shut-off valves from flexible hoses delivered with the unit should
be installed so that normal servicing can be accomplished
without draining the system.

■ Drain taps must be provided at all low points of the system to
permit complete drainage of the circuit during maintenance or
service to the unit. A drain valve is provided in the unit to drain
the water from the unit water system.

■ Be sure to provide a proper drain for the pressure relief valve to
avoid any water coming into contact with electrical parts.

■ Air vents must be provided at all high points of the system. The
vents shall be located at points which are easily accessible for
servicing. An automatic air purge is provided inside the indoor
unit. Check that this air purge valve is not tightened too much so
that automatic release of air in the water circuit remains
possible.

■ Take care that the components installed in the field piping can
withstand the water pressure and temperature.

■ Always use materials which are compatible with the water used
in the system and with the materials used on the unit.

■ Select piping diameter in relation to required water flow and
available ESP of the pump.

When designing the hydraulic system always consider the available
static pressure of the indoor unit.

100

90
80

50

70
60
50
40

ESP [kPa]

30
20
10

0

5 7 9 11131517192123252729

ESP (kPa) External static pressure (kPa)

flow (l/min) Flow (l/min)

Without 3-way valve

Including 3-way valve

Maximum external static pressure if

Maximum external static pressure if

Maximum external static pressure if ΔT=5°C (cooling)

50/80 Identification of the unit capacity

80

50

50

Flow [l/min]

80

ΔT=5°C

80

ΔT=10°C

ΔT=10°C (heating)

ΔT=5°C (heating)

NOTE

■ The ESP curves are the maximum ESP curves for
different ΔT types (pump rpm=4000 for ΔT=5°C;
pump rpm=3600 for ΔT=10°C). The pump of the
indoor module is inverter controlled and controls
to have a fixed ΔT between return and leaving
water temperature.

■ In case of installing a domestic hot water tank
there is an additional pressure drop over the
3-way valve (delivered as accessory with the
tank).

NOTE

When replacing an old gas or oil boiler by an air to
water pump system:

■ please always check the specifications of the
pump of the old unit;

■ if the external static pressure of that pump is
higher than the external static pressure of the air
to water pump system, please install an additional
pump with higher external static pressure in
combination with a balancing bottle.

3 421

Check that the total water volume in the installation, excluding the
internal water volume of the unit, is 20 l minimum.

WARNING

In most applications this miminum water volume will have a
satisfying result.

In critical processes or in rooms with a high heat load
though, extra water volume might be required

Installation manual

12

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

When circulation in each space heating/radiator loop is
controlled by remotely controlled valves, it is important that
this minimum water volume is kept even if all the valves are
closed.

Example (See "6.3. Application examples for heating only

units" on page 13.)

A B

1112

1 Outdoor unit 10 Radiator (field supply)

2 Indoor unit 11 Electronic expansion

3 Refrigerant heat

exchanger 12 Indoor unit refrigerant

4 Water heat exchanger C1 Remote controller

5 Compressor M1...M3 Individual motorized valve

6 Pump

7 Shut-off valve T1...T3 Individual room

8 Collector (field supply)

9 By-pass valve

(field supply)

C1

11

512

A Installation space

B Living room

7 8432 91610

M3

M2

M1

valve

stop valve

to control loop radiators
(field supply)

thermostat (field supply)

T3

T2

T1

6.3. Application examples for heating only units

Floor heating without tank

A B

1112

1 Outdoor unit 11 Electronic expansion valve
2 Indoor unit 12 Indoor unit refrigerant stop
3 Refrigerant heat

exchanger

4 Water heat exchanger C1 Remote controller
5 Compressor M1...M3 Individual motorized valve
6 Pump

7 Shut-off valve T1...T3 Individual room thermostat
8 Collector (field supply)
9 By-pass valve (field

supply)

10 FHL: Floor heating loop

(field supply)

Radiator with tank

C1

11

512

A Installation place

B Living room

C2

778432 916

M3

M2

M1

valve

to control loop radiators
(field supply)

(field supply)

A B

10

FHL3

T3

10

FHL2

T2

10

FHL1

T1

C1

10 13

743 121214 21

6

M

514

8

1 Outdoor unit 11 Radiator (field supply)
2 Indoor unit 12 Electronic expansion
3 Refrigerant heat exchanger
4 Water heat exchanger 13 By-pass valve (field
5 Compressor
6 Pump 14 Indoor unit refrigerant
7 Shut-off valve
8 Motorized 3-way valve

(optional)

9 Domestic hot water tank

(optional)

10 Collector (field supply) B Living room

valve

supply)

stop valve

C1 Remote controller

(master)

C2 Remote controller (slave)

A Installation place

9

11

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

13

Fan coils without tank Application examples with several heat emitters

A B

1112

1 Outdoor unit 11 Electronic expansion valve
2 Indoor unit 12 Indoor unit refrigerant stop
3 Refrigerant heat exchanger
4 Water heat exchanger C1 Remote controller
5 Compressor A Installation place
6 Pump B Living room
7 Shut-off valve M1...M3 Individual motorized valve
8 Collector (field supply)
9 By-pass valve (field supply

10 FCU: Fan coil unit (field

supply)

C1

11

512

7 8432 916

M3

M2

M1

valve

to control loop fan coils
(field supply)

T1...T3 Individual room thermostat

(field supply)

10

FCU3

10

FCU2

10

FCU1

T3

T2

T1

Using different heat emitters means using different water set points
for the system.

Such installations must be done using a balancing bottle and each
kind of heat emitter should have a specific pump.

C1

1

3 34 5 6 8221

7

M

9

21

19
18
11

10 10

1512 14 141613

FHL

35°C

TRD1 TRD2

45°C

FCU

18
20 20

17

65°C

1919

1 Outdoor unit 13 Shut-off valve (field supply)
2 Indoor unit 14 By-pass valve (field supply)
3 Electronic expansion valve 15 FCU: Fan coil unit (field

4 Refrigerant heat exchanger 16 Shut-off valve (field supply)
5 Water heat exchanger 17 Radiator (field supply)
6 Pump 18 Mixing valve (field supply)
7 Motorized 3-way valve

(optional)

8 Domestic hot water tank

(optional)

9 Compressor C1 Remote controller
10 Shut-off valve TRD1 Temperature reducing
11 Balancing bottle (field supply)
12 FHL: Floor heating loop (field

supply)

supply)

19 Pump (field supply)

20 Non-return valve (field

supply)

device 1 (field supply)

TRD2 Temperature reducing

device 2 (field supply)

Refer to chapter "9.8. Multiple set point control" on page 46 for more
information about the configuration of your system.

Installation manual

14

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

6.4. Application examples for reversible units 6.5. Selection of meters for billing purpose

Daikin advises an allocation method based on the measurements of
consumed heat of each indoor unit. Following measurements are

C1

1

2

3

4912

14

13

3

6

10

8

7

required:

■ the outdoor unit power consumption: by means of an electrical
power meter

■ the indoor unit energy consumption:

■ EKHVMYD by means of a heat and cooling meter

■ EKHVMRD by means of a heat meter

■ the indoor unit energy consumption during domestic hot water

operation (if installed): by means of a heat meter.

The selection of the meters for billing purpose is the choice of the end
customer.

Refer to databook for specifications to be used for meter selection.

3

11

5

WARNING

Selection and installation of the meters should be done in
accordance with applicable legislation.

20

Check the meter supplier documentation for detailed installation
instructions. Before installation of the meters, check the following

17

points:

■ install separate watt-hour meter for each outdoor unit

■ all heat meters in the apartment are to be supplied by the same

supplier

■ to facilitate readout and service work, heat meters should be
easily accessible. Choose a mounting location with sufficient
clearance for data read-out.

■ avoid installation of meters inside the indoor unit service space

15

16 20

M2

M1

18

T2

18

T1

in order to guarantee indoor unit servicing.

■ all heat meters and heating and cooling meters in the apartment

17

M2

M1

19

FCU2

T2

19

FCU1

T1

building are to be installed at identical piping distance from the
indoor unit.

21 16

1 Outdoor unit 14 Domestic hot water tank

2 Indoor unit 15 Balancing bottle (field

3 Indoor unit refrigerant stop

valves

4 Cascade heat exchanger 17 By-pass valve (field supply)
5 Cooling heat exchanger 18 Radiator (field supply)
6 Heating expansion valve 19 FCU: Fan coil unit (field
7 Cooling expansion valve
8 R134a compressor 20 Shut-off valve (field supply)

9 Heating heat exchanger 21 Temperature reducing valve
10 Heating pump
11 Cooling pump C1 Remote controller
12 Heating - domestic hot water

3-way valve (optional)

13 Cool/heat 3-way valve T1...T2 Individual room thermostat

NOTE

In order to avoid radiator sweating during cooling

M1...M2 Individual motorized valve

(optional)

supply)

16 Pump (field supply)

supply)

(field supply)

to control loop (field supply)

(field supply)

operation, shut-off valve (20) should be installed. This
shut-off valve can be controled from the indoor unit by
connecting to X2M position 17 and 18 (refer to wiring
diagram for further details).

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

15

Billing application examples

EKHVMYD – Tank heat meter between tank and indoor unit EKHVMYD – Tank heat meter on tapping side

4 4

1

5 6 723

8

91320 19

1

4 4

5 6 723

8

9 131312

M

3

7

10

4

17

20 1913 12

M

18

15

16

1 Outdoor unit 14 Flow measuring unit of space
2 Indoor unit

3 Indoor unit refrigerant

stop valves

4 Electronic expansion

valve

5 Refrigerant heat

exchanger

6 Heating heat

exchanger

7 Pump 20 Tank billing kit (optional) in
8 Motorized 3-way valve

(optional)

9 Domestic hot water

tank (optional)

10 Compressor
11 Shut-off valve
12 Flow measuring unit of

heat meter
(field supply)

13 Temperature sensors

heat meter
(field supply)

11 11

14

heat and cooling meter (field
supply)

15 Temperature sensor space

heat and cooling meter (field
supply)

16 Space heating and cooling

applications

17 Cooling heat exchanger
18 Cool/heat 3-way valve
19 Field piping

case the domestic hot water
tank is mounted on top of the
indoor unit
OR
Floor mounted tank kit
(optional) in case the
domestic hot water tank is
installed on the floor next to
the indoor unit

M

3

10

4

17

7

M

18

15

16

1 Outdoor unit 13 Temperature sensors heat
2 Indoor unit
3 Indoor unit refrigerant

stop valves

4 Electronic expansion

valve

5 Refrigerant heat

exchanger

6 Heating heat

exchanger

7 Pump 16 Space heating and cooling
8 Motorized 3-way valve

(optional) 17 Cooling heat exchanger

9 Domestic hot water

tank (optional)

10 Compressor
11 Shut-off valve
12 Flow measuring unit of

heat meter (field
supply)

11 11

14

meter (field supply)

14 Flow measuring unit of space

heat and cooling meter (field
supply)

15 Temperature sensor space

heat and cooling meter (field
supply)

applications

18 Cool/heat 3-way valve

Installation manual

16

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

EKHVMRD – Tank heat meter between tank and indoor unit EKHVMRD – Tank heat meter on tapping side

4 45 6 7 91318 17

1

23

8

M

3

10

15

11 11

16

1 Outdoor unit 14 Flow measuring unit of space

2 Indoor unit

3 Indoor unit refrigerant

stop valves

4 Electronic expansion

valve

5 Refrigerant heat

exchanger

6 Heating heat

exchanger

7 Pump

8 Motorized 3-way valve

(optional)

9 Domestic hot water

tank (optional)

10 Compressor
11 Shut-off valve
12 Flow measuring unit of

heat meter
(field supply)

13 Temperature sensors

heat meter
(field supply)

15 Temperature sensor space

16 Space heating applications

17 Field piping
18 Tank billing kit (optional) in

18 17

13 12

14

heat meter
(field supply)

heat meter
(field supply)

case the domestic hot water
tank is mounted on top of the
indoor unit
OR
Floor mounted tank kit
(optional) in case the
domestic hot water tank is
installed on the floor next to
the indoor unit

1

4 45 6 7 9 13131223

8

M

3

10

15

16

1 Outdoor unit 11 Shut-off valve
2 Indoor unit 12 Flow measuring unit of heat
3 Indoor unit refrigerant

stop valves

4 Electronic expansion

valve

5 Refrigerant heat

exchanger

6 Heating heat

exchanger

7 Pump 16 Space heating applications
8 Motorized 3-way valve

(optional)

9 Domestic hot water

tank (optional)

10 Compressor

11 11

14

meter (field supply)

13 Temperature sensors heat

meter (field supply)

14 Flow measuring unit of space

heat meter (field supply)

15 Temperature sensor space

heat meter (field supply)

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

17

7. INSTALLATION OF THE UNIT

7.1. Selecting an installation location

WARNING

Be sure to provide for adequate measures in order to
prevent that the 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 and clear.

General precautions on installation location

Select an installation site that meets the following requirements:

■ The foundation must be strong enough to support the weight of
the unit. The floor is flat to prevent vibrations and noise
generation and to have sufficient stability.
This is especially of importance when the optional domestic hot
water tank is installed on top of the unit.

■ The space around the unit is adequate for maintenance and
servicing (refer to "Service space of the unit" on page 21).

■ The space around the unit allows for sufficient air circulation.

■ There is no danger of fire due to leakage of inflammable gas.

■ The equipment is not intended for use in a potentially explosive

atmosphere.

■ Select the location of the unit in such a way that the sound
generated by the unit does not disturb anyone, and the location
is selected according the applicable legislation.
If the sound is measured under actual installation conditions, the
measured value will be higher than the sound pressure level
mentioned in "13. Unit specifications" on page 59 due to
environmental noise and sound reflections.
Choose the installation location carefully and do not install in a
sound sensitive environment (e.g. living room, bedroom, …)

■ All piping lengths and distances have been taken into
consideration (For requirements of piping length for the
refrigerant piping, refer to the outdoor unit installation manual).

Requirement Value

Maximum allowable distance between the domestic
hot water tank and the indoor unit (only for
installations with domestic hot water tank).

10 m

NOTE

If the installation is equipped with a domestic hot water
tank (optional), please refer to the domestic hot water
tank installation manual.

■ Take care that in the event of a water leak, water cannot cause
any damage to the installation space and surroundings.

■ The installation location is frost-free.

■ Be sure that sufficient precautions are taken, in accordance with

the applicable legislation, in case of refrigerant leakage.

■ When installing the unit in a small room, take measures in order
to keep the refrigerant concentration from exceeding allowable
safety limits in the event of a refrigerant leak.

Excessive refrigerant concentrations in a closed room can
lead to oxygen deficiency.

■ Do not climb, sit or stand on top of the unit.

■ Do not place any objects or equipment on top of the unit (top

plate).

■ Do not install the unit in places often used as workplace. In case
of construction works, where a lot of dust is created, the unit
must be covered.

■ Do not install the unit in places with high humidity (e.g.
bathroom) (max humidity (RH)=85%).

Installation manual

18

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

7.2. Dimensions and service space

Dimensions of unit

EKHVMYD

18

19

20

694

74

40

79 241

2x 60

38

14

15

81

3
2
1

9

7

4
5

611

120

62

708

∅60

465

381

251

120

16 17 17

7 79 976

10 10

12 12

11 11

10 10

13 13

1

2 3

6

7
8

8
4

5

8

4
5

8

600

17

1 Suction pipe connection Ø15.9 solder (R410A) 11 Water filter
2 Discharge pipe connection Ø12.7 solder (R410A) 12 Water in connection G1" (female)
3 Liquid pipe connection Ø9.52 solder (R410A) 13 Water out connection G1" (female)
4 R134a service ports 5/16" flare (low) 14 Control wiring intake (knock-out hole Ø37)
5 R134a service ports 5/16" flare (high) 15 Power supply wiring intake (knock-out hole Ø37)
6 Pressure gauge 16 Knock-out hole for refrigerant piping and water piping
7 Blow off valve 17 Levelling feet
8 Drain valve water circuit 18 Liquid stop valve Ø9.52 solder (R410A)
9 Air purge 19 Discharge stop valve Ø12.7 solder (R410A)

10 Shut-off valves 20 Suction stop valve Ø15.9 solder (R410A)

17

16

26.5

607

622

637

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

19

EKHVMRD

79 242

81

2x 60

38

74

13

694

14

2
1

8

3
4

17

18

6 68 8 2 15

9 9

11 11

5

611

120

62

708

∅60

465

381

251

120

15 16 16

10

9 9

12 12

10

3
4

7

3
4

7

600

16

1 Discharge pipe connection Ø12.7 solder (R410A) 10 Water filter
2 Liquid pipe connection Ø9.52 solder (R410A) 11 Water in connection G1" (female)
3 R134a service ports 5/16" flare (low) 12 Water out connection G1" (female)
4 R134a service ports 5/16" flare (high) 13 Control wiring intake (knock-out hole Ø37)
5 Pressure gauge 14 Power supply wiring intake (knock-out hole Ø37)
6 Blow off valve 15 Knock-out hole for refrigerant piping and water piping
7 Drain valve water circuit 16 Levelling feet
8 Air purge 17 Liquid stop valve Ø9.52 solder (R410A)
9 Shut-off valves 18 Discharge stop valve Ø12.7 solder (R410A)

16

15

26.5

622

637

Installation manual

20

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Service space of the unit

7.4. Installing the unit

≥30

A

>600

D

B

>250

>500

A Space required for switch box removal
B Left installation (top view)
C Right installation (top view)
D Space required for wiring (in case of right installation)

C

>250

NOTE

Installation shall be done by an installer, the choice of
materials and installation shall comply with the
applicable legislation. In Europe the EN378 is the
applicable standard that shall be used.

Preparation before installation on final installation place

After unpacking the unit and before installing the unit on its final
installation position, following preparations need to be done:

■ Open the unit
Refer to the "5.1. Opening the unit" on page 4.

■ Knock out the needed knockout holes.
This installation instruction consists of installation of

■ refrigerant piping,

■ water piping and

■ electrical wiring.

For each of these a dedicated knock out hole is foreseen at the
backside of the unit:

1

2

3

1

3

7.3. Inspecting, handling and unpacking the unit

■ At delivery, the unit must be checked and any damage must be
reported immediately to the carrier’s claims agent.

■ Bring the unit as close as possible to its final installation position
in its original package to prevent damage during transport.

■ Unpack the indoor unit completely according to the instructions
mentioned on the unpacking instructions sheet.

■ Check if all indoor unit accessories (see "4. Accessories" on

page 4) are enclosed.

WARNING

Tear apart and throw away plastic packaging bags so that
children will not play with them. Children playing with
plastic bags face danger of death by suffocation.

AB

1 Knock out hole for refrigerant piping
2 Knock out hole for electrical wiring

3 Knock out hole for water piping
A Left installation
B Right installation

■ Knockout holes are foreseen at both sides of the
unit. Pay attention to knock out the correct holes
depending on your installation location.

■ Refrigerant piping and water piping must go
through different knockout holes.

■ The electrical wiring must always enter the unit at
the upper knockout holes at the left side of the
unit (see the figure above).

■ Do NOT use the lower knockout holes.

To punch a knockout hole, punch it with a hammer, remove all
burrs and install the supplied grommets (see "4. Accessories" on

page 4).

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

12 3 4

1 Knockout hole
2 Burr
3 Grommet
4 Putty or insulation materials (field supply)

■ Before installation of the unit to its final position, it is advised to
connect the water flexible pipes and refrigerant pipes to the unit
(delivered as accessory).

Installation manual

21

■ Take out all accessories from the indoor unit.

■ Connect the flexible pipes to the indoor unit connection.

■ Installation of accessory pipes for refrigerant piping.

Depending on left or right connection, different accessory pipes
are delivered with the unit (refer to "4. Accessories" on page 4).
The refrigerant piping needs to be brazed.

Fixation of piping in case of left connection

3x

Caution 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

6

■ 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.

Fixation of piping in case of right connection

3x

NOTE

The back plate is not shown on the illustration, but it is
not needed to take out the back plate for the
installation.

Installation manual

22

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation on final installation position

■ Place the unit in the appropriate installation location.

The weight of the unit is approximately 116 kg. At
least two persons are required to lift the unit.

Use the plates delivered with the unit to lift the unit.

■ Push the sound strips against the ground and fix the side plates
with the appropriate screws.

1

3

3

1

116 kg

■ Level the unit to a stable position
using the levelling feet.

■

■ Only for EKHVMYD:

Unscrew and remove the 2 beams (1) that protect the drain pan
during transport.

Standard installation location of the optional domestic
hot water tank is on top of the indoor unit.

If available service space to left and/or right side is
limited, carefully consider all tank module installation
steps first.

2

2

0 mm

2x

■ Close the sound panel(s) and decoration panel(s) which will be
on the wall side and for which fixation is not possible anymore
after the unit is put on its final location.

Connecting the water circuit

Water connections must be made. The connected flexible pipes need
to be connected to the piping that leads to the heat emitters as
follows:

1122

1 Field piping
2 To heat emitters

1 1

Be careful not to deform the unit piping by using excessive
force when connecting the piping. Deformation of the
piping can cause the unit to malfunction.

If air, moisture or dust gets in the water circuit, problems may occur.
Therefore, always take into account the following when connecting
the water circuit:

■ Use clean pipes only.

■ Hold the pipe end downwards when removing burrs.

■ Cover the pipe end when inserting it through a wall so that no

dust and dirt enter.

■ Use a good thread sealant for the sealing of the connections.

■ When using non-brass metallic piping, make sure to insulate

both materials from each other to prevent galvanic corrosion.

■ Because brass is a soft material, use appropriate tooling for

2x2x

connecting the water circuit. Inappropriate tooling will cause
damage to the pipes.

■ The unit is only to be used in a closed water system.
Application in an open water circuit can lead to
excessive corrosion of the water piping.

■ Never use Zn-coated parts in the water circuit.
Excessive corrosion of these parts may occur as
copper piping is used in the unit's internal water
circuit.

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

23

NOTE

When using a 3-way valve or a 2-way valve in the
water circuit, the maximum changeover time of the
valve shall be less than 60 seconds.

Precautions when connecting field piping and regarding
insulation

The complete water circuit, inclusive all piping, must be insulated to
prevent reduction of the heating capacity.

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

Fix the indoor unit refrigerant connections

NOTE

For servicing purposes, it is needed to be able to
evacuate the refrigerant circuit. Therefore, stop valves
are foreseen as accessories.

These stop valves must be installed near to the unit,
and on an accessible place (when service is needed
the stop valves need to be closed and equipment for
recovery/vacuuming has to be connected).

Decide where to install the stop valves and position the
stop valves on the wall by using the support plate.

NOTE

■ Consider carefully the installation location of the
flexible water inlet pipe.

■ According to the direction of the water flow, the
water filter must be positioned as shown in the
figure.

■ Provide sufficient space allowing easy access to
clean the water filter and regular operation check
of the safety valve.

■ Provide a flexible hose for pressure relief valve
blow-off (field supply).

■ Consider to support the water inlet pipe and water
outlet pipe so not to stress the field piping.

It is very important to keep good visibility of the
manometer. The position of the manometer can be
changed as shown in the figure below. Make sure that the
capillary tube does not come in contact with sharp edges
and prevent bending of the capillary tube as much as
possible.

■ Change the position of the manometer when piping is
on the left side of the unit

1

2

3 3 3

1 Support plate
2 Stop valve
3 To outdoor unit

■ Finalise the refrigerant piping work (connect the prepared
refrigerant piping to the piping coming from the outdoor unit).
Refer to the above cautions for brazing and to the outdoor unit
installation manual.

1

2

3

■ Mounting of the manometer against a wall (the 2
screws are field supply).

1

2x

2

2x

3

NOTE

Above instruction is for an EKHVMYD unit.

For the heating only unit EKHVMRD only 2 pipes (liquid
and discharge pipe) need to be connected.

Close the unit

1 Put the sound bottom plate at the bottom of the unit and fix it

with the appropriate screws.

2x

1 2

NOTE

Only for EKHVMYD:

If the 2 beams that protect the drain pan during
transport were not removed before attempting to
put the sound bottom plate in place, the sound
bottom plate cannot be mounted. Refer to

"Installation on final installation position" on
page 23.

Installation manual

24

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

2 Fix the top panel on the unit with the appropriate screws.

4x

7.5. Leak test and vacuuming drying R410A circuit

When the indoor unit was powered on before all brazing and
refrigerant piping work was finished on R410A side, a special setting
needs to be applied to open all valves before vacuuming can start.
See also the installation manual of the outdoor unit for furter details
and "11.3. Vacuuming/recovery and maintenance on refrigerant side"

on page 55.

7.6. Water piping

The unit is equipped with a water inlet and water outlet for connection
to a water circuit. This circuit must be provided by an installer and
must comply with the applicable legislation.

3 Stick the top plate insulation (accessory) at the inside of the top

decoration panel according to the figure below.

1 2

5 mm

3 4

4 Fix the top decoration panel on top

of the unit using the appropriate
screws. In case a domestic hot
water tank (optional) is installed,
refer to the domestic hot water tank
installation manual.

2x

NOTE

The unit is only to be used in a closed water system.
Application in an open water circuit can lead to
excessive corrosion of the water piping.

For precautions about the design of the water circuit,
refer to "6. Design of the water circuit" on page 11.

Checking the water volume and expansion vessel
pre-pressure

The expansion vessel in the unit avoids that the pressure in the
system increases due to temperature differences.

The unit is equipped with a 7 l expansion vessel for which the
pre-pressure can be changed (default pre-pressure is 1 bar).

Changing the pre-pressure of the expansion vessel might be needed
if the water volume of the system is too big in relation with the needed
leaving water temperature.

Refer to the graph below.

2.50

2.25

2.00

1.75

1.50

1.25

A

1.00

5 Fix the front and remaining side decoration panel(s) back to the

unit using the appropriate screws.

2x

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

0.75

0.50

0.25

0.00
40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400

20

B

80°C water temperature

65°C water temperature

35°C water temperature

Never change the pre-pressure of the system to a value
lower than 0.3 bar

A Pre-pressure (bar)
B System water volume (l)

Installation manual

25

How to check if the pre-pressure of the system needs to be changed:

0

■ Step 1: define the needed leaving water temperature in the
system: e.g. 65°C

■ Step 2: define the maximal water volume in the system with the
default pre-pressure of 1 bar

2.50

Setting the pre-pressure of the expansion vessel

When it is required to change the default pre-pressure of the
expansion vessel (1 bar), keep in mind the following guidelines:

■ Use only dry nitrogen to set the expansion vessel pre-pressure.

■ Inappropriate setting of the expansion vessel pre-pressure will

lead to malfunction of the system. Therefore, the pre-pressure
should only be adjusted by a licensed installer.

2.00

1.50

A

1.00

0.50

0.00
20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 27

B

65°C water temperature

A Pre-pressure (bar)
B System water volume (l)

■ If the total water volume of the system is <150 l:
no change of pre-pressure needed.

■ If the total water volume of the system is >150 l:
change of pre-pressure needed.

NOTE

Never change the pre-pressure of the system to a
value lower than 0.3 bar.

In this example (when the needed water temperature is
65°C) the maximal water volume is 215 l.

NOTE

To set the pre-pressure, the expansion vessel needs to
be accessed from the front or the right.

Accessing the expansion valve from the front:

■ Remove the front decoration panel.

■ Remove the switch box.

■ Remove the small expansion valve (2 l) only in case of

EKHVMYD.

6

1 2 3 4 5

1 Front decoration panel
2 Switch box
3 Small expansion vessel (2 l)
4 Sound panel
5 Right decoration panel
6 Pre-charge valve

Installation manual

26

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Charging water

8. ELECTRICAL WIRING WORK

1 Connect the water supply to a fill valve (field supply).

2 For EKHVMRD unit, make sure to open the automatic air purge.

3 For EKHVMYD unit, the unit has 2 automatic air purge valves.

Make sure to open both of them for these units.

4 When a tank is used, a 3-way valve needs to be installed (refer

to the manual of the domestic hot water tank for details).

5 Fill with water until the manometer indicates a pressure of

approximately 2.0 bar.
Remove air in the circuit as much as possible using the air purge

valves. Air present in the water circuit might cause
malfunctioning of the heater kit (if installed).

6 For units with optional heater kit: remove air in the heater vessel

using the heater kit air purge valve.

NOTE

For final purging of the unit, operation of the pump is needed.
Therefore, the unit needs to be finally installed.

■ During filling, it might not be possible to remove all
air in the system. Remaining air will be removed
through the automatic air purge valves during first
operating hours of the system. Additional filling
with water afterwards might be required.
Pump only operation in order to purge the air of
the system is possible through field settings. Refer
to field settings "[E-04] Pump only operation" on

page 41 for further details.

■ The water pressure indicated on the manometer
will vary depending on the water temperature
(higher pressure at higher water temperature).
However, at all times water pressure shall remain
above 1 bar to avoid air entering the circuit.

■ The unit might dispose some excessive water
through the pressure relief valve.

■ Water quality must be according to EU directive
98/83 EC.

8.1. Precautions on electrical wiring work

WARNING: Electrical installation

All field wiring and components must be installed by an
installer and must comply with the applicable legislation

NOTE

Electrical wiring work recommendations.

To persons in charge of electrical wiring work:
Do not operate the unit until the refrigerant piping is
complete. Running the unit before the piping is ready
will break the compressor.

DANGER: ELECTRICAL SHOCK

See "2. General safety precautions" on page 2.

WARNING

■ A main switch or other means for disconnection,
having a contact separation in all poles, must be
incorporated in the fixed wiring in accordance with the
applicable legislation.

■ Use only copper wires.

■ All field wiring must be carried out in accordance with

the wiring diagram supplied with the unit and the
instructions given below.

■ Never squeeze bundled cables and be sure that it
does not come in contact with the non-insulated
piping and sharp edges. Be sure no external pressure
is applied to the terminal connections.

■ Power supply wires must be attached securely.

■ If the power supply has a missing or wrong N-phase,

equipment will break down.

■ Be sure to establish an earth. Do not earth the unit to
a utility pipe, surge absorber, or telephone earth.
Incomplete earth may cause electrical shock.

■ Be sure to install an earth leakage protector in
accordance with the applicable legislation. Failure to
do so may cause electric shock or fire.

■ Be sure to use a dedicated power circuit, never use a
power supply shared by another appliance.

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

■ 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
a capacitor abnormal heating accident due to high­frequency waves. Therefore, never install a phase
advancing capacitor.

■ Be sure to install the required fuses or circuit
breakers.

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

27

ATTENTION

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....

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

WARNING

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.

Point of attention regarding quality of the public electric power
supply.

This equipment complies with respectively:

■ EN/IEC 61000-3-11
is less then or equal to Z

■ EN/IEC 61000-3-12

(1)

provided that the system impedance Z

.

max

(2)

provided that the short-circuit power S

sys

is greater than or equal to the minimum Ssc value

at the interface point between the user's supply and the public
system. It is the responsibility of the installer or user of the equipment
to ensure, by consultation with the distribution network operator if
necessary, that the equipment is connected only to a supply with
respectively:

■ Z

less than or equal to Z

sys

max

■ Ssc greater than or equal to the minimum Ssc value.

Z

(Ω) Minimum Ssc value

max

EKHVMYD50A 0.46 1459 kVA

EKHVMYD80A 0.46 1459 kVA

EKHVMRD50A 0.46 1459 kVA

EKHVMRD80A 0.46 1459 kVA

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

changes, voltage fluctuations and flicker in public low-voltage supply
systems for equipment with rated current ≤75 A.

(2) 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.

Installation manual

28

8.2. Internal wiring – Parts table

Refer to the wiring diagram sticker on the unit. The abbreviations
used are listed below:

A1P............................ Main PCB

A2P............................ User interface PCB

A3P............................ Control PCB

A4P............................ Inverter PCB

A5P............................ QA PCB

A6P............................ Filter PCB

A7P......................*.... Digital I/O PCB

A8P......................*.... Demand PCB

A9P............................ Multi tenant PCB

A10P....................*.... Thermostat PCB

A11P....................*.... Receiver PCB

B1PH......................... High pressure sensor

B1PL.......................... Low pressure sensor

C1~C3 ....................... Filter capacitor

C1~C3 (A4P)............. PCB capacitor

DS1 (A*P).................. Dip switch

F1U............................ Fuse (T, 3.2 A, 250 V)

F1U (A1P,A3P,A9P) ... Fuse (T, 3.15 A, 250 V)

sc

F1U (A6P) ................. Fuse (T, 6.3 A, 250 V)

F1U,F2U (A7P)....*.... Fuse (5 A, 250 V)

F3U,F4U.............. *.... Fuse (T, 6.3 A, 250 V)

HAP (A*P) ................. PCB LED

IPM1.......................... Integrated power module

K1A~K3A................... Interface relay

K1E~K3E................... Electronic expansion valve

K*R (A*P) .................. PCB relay

K1S~K3S................... 3-way valve

K4S..................... #.... 2-way valve

M1C........................... Compressor

M1F ........................... Switch box cooling fan

M1P,M2P ................... DC inverter pump

PC (A11P) ...........*.... Power circuit

PHC1................... *.... Optocoupler input circuit

PS (A*P).................... Switching power supply

Q1DI,Q2DI.......... #.... Earth leakage protector

Q2L............................ Thermal protector water piping

R1,R2 (A4P).............. Resistance

R1L............................ Reactor

R1H (A10P).........*.... Humidity sensor

R1T (R10P) .........*.... Ambient sensor

R2T......................*.... Domestic hot water tank thermistor

R2T......................*.... External sensor (floor or ambient)

R3T............................ Liquid thermistor R410A

R4T............................ Returning water thermistor

R5T............................ Leaving water thermistor (heating)

R6T............................ Discharge thermistor

R7T............................ Liquid thermistor R134a

R8T............................ Fin thermistor

R9T............................ Leaving water thermistor (cooling)

R10T.......................... Liquid thermistor (cooling)

R11T.......................... Suction thermistor (cooling)

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

RC (A*P).................... Receiver circuit

S1PH ......................... High pressure switch

S1S..................... #.... Benefit kWh rate power supply contact

S3S..................... #.... Input multiple setpoint 1

S4S..................... #.... Input multiple setpoint 2

SS1 (A1P).................. Selector switch (emergency)

SS1 (A2P).................. Selector switch (master/slave)

SS1 (A7P)............* .... Selector switch

TC (A*P) .................... Transmitter circuit

T1R,T2R (A*P) .......... Diode bridge

T3R............................ Power module

V1C~V8C .................. Ferrite core noise filter

X1M~X3M.................. Terminal strip

X1Y~X4Y...................Connector

X*M (A*P) ............* .... PCB terminal strip

Z1F~Z5F (A*P) .......... Noise filter

*.... Included in option kit

#.... field supplied

NOTE

The wiring diagram on the indoor unit is only for the
indoor unit.

For the outdoor unit refer to the wiring diagram of the
outdoor unit.

8.3. System overview of field wiring

Field wiring consists out of power supply, multi tenant power supply,
indoor-outdoor communication (=transmission) wiring, wiring of the
user interface, wiring for connection of options and field supply
accessories.

NOTE

■ Carefully install multi tenant power supply.
This power supply will guarantee correct outdoor
unit operation if one tenant shuts of power supply.
If the multi tenant power supply is not installed, the
outdoor unit will stop operating if one tenant shuts
off the main power supply.

■ If during service the main power supply is cut off
for safety of electric shock, make sure that also
the multi tenant power supply is cut off.

8.4. Requirements

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

Maximum

Cable

bundle

Item

In case of normal kWh rate power supply installation

1 HV Multi tenant power supply 2 1
2 PS Normal kWh rate power supply 2+GND

In case of benefit kWh rate power supply installation

1 HV Multi tenant power supply 2 1
2 PS Normal kWh rate power supply 2+GND 1.25
3 PS Benefit kWh rate power supply 2+GND

4 LV Transmission wiring (F1/F2) 2

5 LV Standard remote controller (P1/

6 LV Secondary remote controller

7 LV Domestic hot water tank

8 LV External room thermostat

9 LV Benefit kWh rate power supply

10 LV

11 LV

12 LV Heater kit signal

13 HV

14 HV

15 HV Cooling on/off output 2

16 HV Heater kit control

PS = Power supply
LV = Low voltage
HV = High voltage

(a) Optional
(b) Refer to the nameplate on the indoor unit.

(c) Minimum cable section 0.75 mm2.
(d) This device and connection cable is delivered with the domestic hot water tank.
(e) Only for EKHVMYD models.

P2)

(P1/P2)

thermistor (R2T)

signal ON/OFF

switch (S1S)

Multiple set point signal 1

Multiple set point signal 2

3-way valve (K1S)

Digital I/O PCB outputs

Description

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

Required number

of conductors

(a)

(a)

Refer to the installation
manual of the heater kit

Refer to the installation
manual of the heater kit

2

2

2

2

2

2

2

3

2

running

current

(b)

(b)

–1.25

(c)

(c)

(c)

(d)

100 mA

100 mA

100 mA

100 mA

(d)

300 mA

300 mA

(e)

(c)

(c)

(c)

(c)

(c)

(c)

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

29

8.5. Routing

8.6. Connection

Take out the switchbox and put it in front of the unit and open the
switchbox cover. Refer to "7.1. Selecting an installation location" on

page 18.

NOTE

When installing field supply or option cables, always
make sure that the switchbox is placed before the unit.
This will make it possible to remove the switchbox
easily during service.

Route the wires into the unit as follows:

PS

HV

LV

LV
HV

PS

LV

HV

PS

PS

HV

LV

Use the appropriate cables, connect the power supply, multi tenant
power supply, and communication cable(s) to the appropriate
terminals as shown below.

5 5

1

5

3

2

4

1 Power supply
2 Multi tenant power supply
3 Transmission wiring
4 User interface wiring
5 Stress relief

PS

LV H V

LV
HV+PS

To avoid electric noise problems, be sure that cables are put in the
correct bundle as mentioned on the figure.

Be sure to fix the cable with cable ties to the cable tie mountings to
ensure strain relief and to make sure that it does not come in contact
with the piping and sharp edges.

CAUTION

Do not push or place redundant cable length in the unit.

Refer also to the wiring diagram for further details.

For the connections of optional PCB's please refer to the respective
installation manual.

WARNING

The length of the conductors between the power supply
stress relief and the terminal block itself must be such that
the current-carrying wires are tautened before the earth
wire is in case the power supply is pulled loose from the
stress relief.

Installation manual

30

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation and connection of the remote controller

The unit is equipped with a remote controller offering user-friendly
way to set up, use and maintain the unit. Before operating the remote
controller, follow this installation procedure.

X3M

6

P2

P1

X3M

P2

1

P1

NOTE

The wiring for connection is not included.

■ The remote controller, delivered in a kit, has to be
mounted indoors.

■ When the remote controller thermostat function is
used, select the installation location considering it
should be a place:

■ where the average temperature in the room can be

detected,

■ that is not exposed to direct sunlight,

■ that is not near a heat source,

■ that is not affected by outside air or air draught due

to e.g. door opening/closing,

■ where the display is kept clean,

■ where the temperature is between 0°C and 50°C,

■ where the relative humidity is maximum 80%.

1 Remove the front part of the remote controller.

Insert a slotted screwdriver into the slots (1)
in the rear part of the remote controller, and
remove the front part of the remote
controller.

2 Fasten the remote controller on a flat

surface.

2

P1P2

P1P2

3

4 5

1 Unit
2 Rear part of the remote controller
3 Front part of the remote controller
4 Wired from the rear
5 Wired from the top
6 Notch the part for the wiring to pass through with nippers,

etc.

Connect the terminals on top of the front part of the remote
controller and the terminals inside the unit (P1 to X3M: P1, P2 to
X3M: P2).

NOTE

Peel the shield for the part that
has to pass through the inside of
the remote controller case ( l ).

1

4 Reattach the upper part of the remote controller.

Be careful not to pinch the wiring when attaching.

NOTE

3 Wire the unit.

NOTE

Be careful not to distort the shape of the lower
part of the remote controller by over tightening the
mounting screws.

If next to the standard remote controller the
optional remote controller is installed as well:

■ Connect the electrical wires of both remote
controllers in the same way like described
below.

■ Select a master and a slave remote controller
by switching the SS1 selector switch.

PCB

SS

M

SS1

S Slave

M Master

■ Only the remote controller set as master can
work as room thermostat.

First begin fitting from the clips at the
bottom.

1

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

31

Connection to a benefit kWh rate power supply

WARNING

A benefit kWh rate power supply is only possible for the
indoor unit. For compressor reliability reasons it is not
allowed to connect the outdoor unit to such a power supply.

Electricity companies throughout the world work hard to provide
reliable electric service at competitive prices and are often authorized
to bill clients at benefit rates. E.g. time-of-use rates, seasonal rates,
Wärmepumpentarif in Germany and Austria, ...

This equipment allows for connection to such benefit rate power
supply delivery systems.

Consult with the electricity company acting as provider at the site
where this equipment is to be installed to know whether it is
appropriate to connect the equipment in one of the benefit kWh rate
power supply delivery systems available, if any.

When the equipment is connected to such benefit kWh rate power
supply, the electricity company is allowed to:

■ interrupt power supply to the equipment for certain periods of
time;

■ demand that the equipment only consumes a limited amount of
electricity during certain periods of time.

The indoor unit is designed to receive an input signal by which the
unit switches into forced off mode. At that moment, the unit
compressors will not operate.

Possible types of benefit kWh rate power supply

Possible connections and requirements to connect the equipment to
such power supply are illustrated in the figures below:

1

2

1

2

1

2

3

1

2

3

[6-04]=1

LN

LN

LN

S1S

S1S

S1S

1

2

43

1

2

43

1

2

3

4 4

[6-04]=2

LN

1

S1S

43

LN

2

S1S

43

L N

3

S1S

WARNING

For a benefit kWh rate power supply like illustrated
below as type 1

During the period that the benefit kWh rate is active and
power supply is continuous, then stand-by power
consumption of the inverter PCB is possible.

LN

6

4

X3M7 8 X2M8 9X1ML N

1 Benefit kWh rate power supply box
2 Receiver controlling the signal of the electricity company
3 Benefit kWh rate power supply
4 Voltage free contact to indoor unit
5 Normal kWh rate power supply
6 Fuse (field supply)

In case of benefit kWh rate power supply installation,
remove the wiring bridges on X2M before installing the
normal kWh rate power supply.

5

X2M10 118 9

Installation manual

32

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Type 1

The benefit kWh rate power supply is of the type that power supply is
not interrupted.

Type 2

The benefit kWh rate power supply is of the type that power supply
will be interrupted after elapse of time.

Type 3

The benefit kWh rate power supply is of the type that power supply is
interrupted immediately.

When parameter [6-04]=1 at the moment that the benefit kWh rate
signal is sent by the electricity company, that contact will open and

the unit will go in forced off mode

(1)

.

When parameter [6-04]=2 at the moment that the benefit kWh rate
signal is sent by the electricity company, that contact will close and

the unit will go in forced off mode

(1) When the signal is released again, the voltage free contact will close and

the unit will restart operation. It is therefore important to leave the auto
restart function enabled. Refer to field setting "[8] Option setup, "[8-01]" on

page 39 in the chapter "9.3. Field settings" on page 34.

(2) When the signal is released again, the voltage free contact will open and

the unit will restart operation. It is therefore important to leave the auto
restart function enabled. Refer to field setting "[8] Option setup, "[8-01]" on

page 39 in the chapter "9.3. Field settings" on page 34.

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

(2)

.

9. START-UP AND CONFIGURATION

The indoor unit should be configured by the installer to match the
installation environment (outdoor climate, installed options, etc.) and
user expertise.

ATTENTION

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

9.1. Pre-operation checks

Switch off the power supply before making any
connections.

After the installation of the unit, check the following:

1 Field wiring

Make sure that the field wiring has been carried out according to
the instructions described in the chapter "8. Electrical wiring

work" on page 27, according to the wiring diagrams and

according to European and national regulations.

2 Fuses and protection devices

Check that the fuses and other locally installed protection
devices are of the size and type specified in the chapter

"Electrical specifications: power supply" on page 59. Make sure

that neither a fuse nor a protection device has been bypassed.

3 Earth wiring

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

4 Internal wiring

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

5 Installation

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

6 Damaged equipment

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

7 Refrigerant leak

Check the inside of the unit on refrigerant leakage. If there is a
refrigerant leak try to repair the leak (recovery, repair, and
vacuuming needed). If it is impossible to repair by yourself,
perform a recovery operation as mentioned in chapter

"11.3. Vacuuming/recovery and maintenance on refrigerant
side" on page 55 and call your local dealer.

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

8 Vacuuming and refrigerant charging

Refer to the outdoor unit manual for more details.

9 Water leak

Check the inside of the unit on water leakage. In case there is a
water leakage try to repair the leak. If it is impossible to repair by
yourself, close the water inlet and water outlet shut-off valves
and call your local dealer.

10 Power supply voltage

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

Installation manual

33

11 Air purge valve

Make sure the air purge valve of the heat pump is open (at least
2 turns).

Make sure the air purge valve of the heater kit is open (at least
2 turns). See installation manual of the heater kit.

12 Shut-off valves

Make sure that the shut-off valves are correctly installed and
fully open.

Operating the system with closed valves will damage the
pump!

Once all checks are fulfilled, the unit must be closed, only then can
the unit be powered up. When the power supply to the indoor unit is
turned on, "88" is displayed on the remote controller during its
initialization, which might take up to 30 seconds. During this process
the remote controller can not be operated.

9.2. Final air purging

To get rid of all the air in the system, the pump should be operated.

Therefore, change the field setting [E-04] as explained in the chapter

"9.3. Field settings" on page 34. More details about setting "[E-04]
Pump only operation" can be found on page 41.

In case of an optional tank installed with the EKHVMYD units the
system includes two 3-way valves (cool/heat and heat/domestic hot
water). If no tank is installed, only 1 3-way valve is included.

In case of an optional tank installed with the EKHVMRD units the
system includes one 3-way valves (heat/domestic hot water).

9.3. Field settings

The indoor unit should be configured by the installer to match the
installation environment (outdoor climate, installed options, etc.) and
user demand. Therefore, a number of so called field settings are
available. These field settings are accessible and programmable
through the user interface on the indoor unit.

Each field setting is assigned a 3-digit number or code, for example
[5-03], which is indicated on the user interface display. The first digit
[5] indicates the 'first code' or field setting group. The second and
third digit [03] together indicate the 'second code'.

A list of all field settings and default values is given in the "9.9. Field

setting table" on page 49. In this list we provided for 2 columns to

register the date and value of altered field settings at variance with
the default value.

A detailed description of each field setting is given under

"9.5. Detailed description" on page 35.

9.4. Procedure

To change one or more field settings, proceed as follows.

3

2

1 Press the z button for a minimum of 5 seconds to enter FIELD

SET MODE.
The $ icon (3) will be displayed. The current selected field
setting code is indicated ; (2), with the set value displayed to
the right - (1).

2 Press the ébi button to select the appropriate field setting

first code.

3 Press the ébj button to select the appropriate field setting

second code.

4 Press the pfi button and pfj button to change

the set value of the select field setting.

5 Save the new value by pressing the pr button.

6 Repeat step 2 through 4 to change other field settings as

required.

7 When finished, press the z button to exit FIELD SET MODE

NOTE

■ Changes made to a specific field setting are only
stored when the pr button is pressed.
Navigating to a new field setting code or pressing
the z button will discard the change made.

■ The field settings are grouped by their field setting
first code.
For example, field settings [0-00]; [0-01]; [0-02];
[0-03] are defined as "Group 0".
When different values are changed within the
same group, pressing the pr button will save all
the values changed within this group.
Be aware of this when changing field settings
within the same group and pressing on the pr
button.

1

.

Installation manual

34

NOTE

NOTE

■ Before shipping, the set values have been set as
shown under "9.9. Field setting table" on page 49.

■ When exiting FIELD SET MODE, "88" may be
displayed on the remote controller LCD while the
unit initializes itself.

When running through the field settings you may notice
that there are some more field settings as there are
mentioned in the "9.9. Field setting table" on page 49.

These field settings are not applicable and may not
be changed!

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

9.5. Detailed description

19°C

19°C

19°C

22°C

21°C

62°C

62°C

62°C

65°C

64°C

18°C

57°C

5:00

23:00

19°C

18°C

19°C

22°C

21°C

62°C

60°C

62°C

65°C

64°C

19°C

62°C

19°C

62°C

19°C

62°C

57°C

60°C

For a summary of all field settings refer to "9.9. Field setting table" on

page 49.

[0] Remote control setup

■ [0-00] User permission level

The remote controller can be programmed to make certain
buttons and functions unavailable for the user. There are 2
permission levels defined. Both levels (level 2 and level 3) are
basically the same, the only difference is that for level 3 no water
temperature settings are possible (see table below).

level 2 level 3

Operation ON/OFF Operable Operable

Domestic water heating operation ON/
OFF

Setting the leaving water temperature Operable —

Setting the room temperature Operable Operable

Quiet mode ON/OFF — —

Weather dependent set point operation
ON/OFF

Setting the clock — —

Programming the schedule timer — —

Schedule timer operation ON/OFF Operable Operable

Field settings — —

Error code display Operable Operable

Test operation — —

By default no level is defined so all buttons and functions are
operable.
The actual permission level is determined by field setting. For
permission level 2, set field setting [0-00] to 2, for permission
level 3, set field setting [0-00] to 3.
Once the field setting is set, the chosen permission level is not
yet active. Enabling the selected permission level is done by
simultaneously pressing buttons pi and pj immediately
followed by simultaneously pressing buttons s and ba, and
keeping all 4 buttons pressed for at least 5 seconds. Note that
no indication on the remote controller is given. After the
procedure the blocked buttons will not be available anymore.
Deactivating the selected permission level is done in the same
way.

■ [0-01] Room temperature compensation value

If needed, it is possible to adjust some thermistor value of the
unit by a correction value. This can be used as countermeasure
for thermistor tolerances or capacity shortage.
The compensated temperature (= measured temperature plus
compensation value) is then used for controlling the system and
will be displayed in the temperature read-out mode. See also

"[9] Automatic temperature compensation" on page 39 for

compensation values for leaving water temperature and
domestic hot water temperature.

■ [0-02] Setting not available

■ [0-03] Status: defines whether the ON/OFF instruction can be

used in the schedule timer for space heating.
Refer to the operation manual for details how to program the
schedule timer.
The schedule timer for space heating can be programmed in
2 different ways: based on the temperature set point (both
leaving water temperature and room temperature) and based on
the ON/OFF instruction.

NOTE

By default space heating based on temperature set
point (method 1) is enabled, so only temperature shifts
are possible (no ON/OFF instruction).

Advantage of this method is that you can simply switch
off the space heating operation by pushing the y
button without disabling the automatic domestic hot

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

water storage operation (e.g. during summertime when
no space heating is required).

Operable Operable

Operable —

Permission

In the following tables both methods on how to interpret the schedule
timer are shown.

Method 1 Space heating based on temperature set point

During operation During schedule timer operation the operation LED is lit

When pushing
the y button

When pushing
the r/p button

(a) For leaving water temperature and/or room temperature

continuously.

The schedule timer for space heating will stop and will
not start again.
The controller will be switched off (operation LED will
stop working).
However, the schedule timer icon will stay displayed

which means that the domestic water heating stays
enabled.

The schedule timer for space heating and domestic
water heating along with the quiet mode will be stopped
and will not start again.
The schedule timer icon will not be displayed anymore.

(a)

Operation example: Schedule timer based on temperature set

points.

When setback function is enabled, the setback operation will have
priority over the scheduled action in the schedule timer.

T

22

22°C

65

1

19

19°C19°C19°C

62

62°C62°C

65°C

19

62

62°C

21°C

21

64°C

64

19

62

t

16:00

0:30

6:30 9:00

T

2

18

18°C

60

60°C

57

23:00

A

57°C

5:00

5:0023:00

t

T

22°C

22

65

3

19

19°C

62

62°C62°C

1 Schedule timer
2 Setback function
3 When both setback function and schedule timer are enabled
A Setback function

t Time

T Temperature set point

65°C

60

60°C

23:00

16:00

Room temperature

Leaving water temperature

0:30

18°C

18

57

57°C

21°C

21

64

64°C

19

19°C

19

19°C

62

62

62°C

62°C

5:00 9:00

6:30

19°C

19

19

19°C

62

62

62°C

t

Installation manual

35

Method 2 Space heating based on ON/OFF instruction

18°C

60°C

5:00

23:00

19°C

19°C

22°C

21°C

62°C

62°C

65°C

64°C

19°C

19°C

22°C

21°C

62°C

62°C

65°C

64°C
18°C

60°C

During operation When the schedule timer switches space heating OFF,

When pushing
the y button

When pushing
the r/p button

the controller will be switched off (operation LED will stop
working). Note that this has no influence on the domestic
water heating.

The schedule timer for space heating will stop (when
active at that moment) and will start again at the next
scheduled ON function.
The "last" programmed command overrules the
"preceding" programmed command and will remain
active until the "next" programmed command occurs.
Example: imagine the actual time is 17:30 and actions

are programmed at 13:00, 16:00 and 19:00. The "last"
programmed command (16:00) overruled the "previous"
programmed command (13:00) and will remain active
until the "next" programmed command (19:00) occurs.
So in order to know the actual setting, one should consult
the last programmed command. It is clear that the "last"
programmed command may date from the day before.
Refer to the operation manual.
The controller will be switched off (operation LED will
stop working).
However the schedule timer icon will stay displayed
which means that the domestic heating stays enabled.

The schedule timer for space heating and domestic
water heating along with the quiet mode will be stopped
and will not start again.
The schedule timer icon will not be displayed anymore.

Operation example: Schedule timer based on ON/OFF instruction.

When setback function is enabled, the setback operation will have
priority over the scheduled action in the schedule timer if ON
instruction is active. If OFF instruction is active this will have priority
over the setback function. At any time the OFF instruction will have
the highest priority.

B

22

22°C

65

1

19°C19°C

19

62

62°C62°C

65°C

OFF ONON

21°C

21

64°C

64

19

62

t

9:00

16:00

6:300:30

[1] Automatic storage timing for domestic water heating

In this mode, the indoor unit will deliver hot water to the domestic hot
water tank based on the daily fixed pattern. This mode will continue
until storage temperature is reached.

Automatic storage is the advised domestic hot water mode. In this
mode water heats up during the night (when space heating
requirements are lower) until the storage set point. The heated water
is stored in the domestic hot water tank at a higher temperature so it
can fulfil the domestic hot water requirements throughout the day.

The storage temperature set point and timing are field settings.

■ [1-00] Status: defines whether the domestic water heating

(storage mode) during night is enabled (1) or not (0).

■ [1-01] Start time: time of the night at which the domestic water

should be heated.

■ [1-02] Status: defines whether the domestic water heating

(storage mode) during daytime is enabled (1) or not (0).

■ [1-03] Start time: time of the day at which the domestic water

should be heated.

NOTE

■

Make sure the domestic hot water is only heated up
to the domestic hot water temperature you require.
Start with a low domestic hot water storage
temperature set point, and only increase if you
feel that the domestic hot water supply
temperature is not sufficient for your needs (this
depends on your water using pattern).

■ Make sure the domestic hot water is not heated
unnecessary. Start with activating automatic
storage during night (default setting). If it seems
that the domestic hot water night storage
operation is not sufficient for your needs, an
additional storage during daytime can be set.

■ For energy-saving purposes, it is advised to
enable the weather dependent domestic water
heating. Refer to setting "[b-02]" on page 40.

Refer to "[b] Domestic hot water set points" on page 40 for
temperature set points.

18

23:00

23:00

18°C

18

60

60°C

18°C

60

60°C

A

OFF ONON

5:00

5:0023:00

21

21°C

64

64°C

6:30 9:00

t

19

62

t

2

B

22

22°C

65

65°C

19

19°C19°C

62

62°C62°C

3

16:00

1 Schedule timer
2 Setback function
3 When both setback function and schedule timer are enabled
A Setback function
B ON/OFF instruction

t Time

T Temperature set point

Room temperature

Leaving water temperature

■ [0-04] Status: defines whether the ON/OFF instruction can be

used in the schedule timer for cooling.
Same as for [0-03] but for cooling schedule timer.

For cooling, no setback function is available.

Installation manual

36

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

[2] Automatic setback function

Setback function provides the possibility to lower the room
temperature. The setback function can for instance be activated
during the night because the temperature demands during night and
day are not the same.

NOTE

■ By default the setback function is enabled.

■ The setback function can be combined with the

automatic weather dependent set point operation.

■ Setback function is an automatic daily scheduled
function.

■ [2-00] Status: defines whether the setback function is turned ON

(1) or OFF (0)

■ [2-01] Start time: time at which setback is started

■ [2-02] Stop time: time at which setback is stopped

Setback can be configured for both room temperature control and
leaving water temperature control.

T

A

21°C

[5-03] 18°C

t

[2-01] [2-02]

A Normal room temperature set point

t Time

T Temperature

T

65°C

A

5°C [5-02]

60°C

B

t

[2-01] [2-02]

A Normal leaving water temperature set point
B Leaving water setback temperature

t Time

T Temperature

It is advised to set the start time of automatic storage during night
[1-01] on the moment that the setback function starts [2-01].

Refer to "[5] Automatic setback and disinfection set point" on page 38
for temperature set points.

NOTE

Setback function for cooling does not exist.

[3] Weather dependent set point

When weather dependent operation is active, the leaving water
temperature is determined automatically depending on the outdoor
temperature: colder outdoor temperatures will result in warmer water
and vice versa. The unit has a floating set point. Activating this
operation will result in a lower power consumption than use with a
manually fixed leaving water set point.

During weather dependent operation, the user has the possibility to
shift up or down the target water temperature by a maximum of 5°C.
This "Shift value" is the temperature difference between the
temperature set point calculated by the controller and the real set
point. E.g. a positive shift value means that the real temperature set
point will be higher than the calculated set point.

It is advised to use the weather dependent set point because it
adjusts the water temperature to the actual needs for space heating.
It will prevent the unit from switching too much between thermo ON
operation and thermo OFF operation when using the remote
controller room thermostat or external room thermostat.

T

t

Lo_Ti

+ 05

Shift value

Hi_Ti

Lo_A Hi_A T

T

t

T

A

Shift value = Shift value

Target water temperature

Ambient (outdoor) temperature

00

– 05

A

■ [3-00] Low ambient temperature (Lo_A): low outdoor

temperature.

■ [3-01] High ambient temperature (Hi_A): high outdoor

temperature.

■ [3-02] Set point at low ambient temperature (Lo_Ti): the target

outgoing water temperature when the outdoor temperature
equals or drops below the low ambient temperature (Lo_A).
Note that the Lo_Ti value should be higher than Hi_Ti, as for
colder outdoor temperatures (i.e. Lo_A) warmer water is
required.

■ [3-03] Set point at high ambient temperature (Hi_Ti): the target

outgoing water temperature when the outdoor temperature
equals or rises above the high ambient temperature (Hi_A).
Note that the Hi_Ti value should be lower than Lo_Ti, as for
warmer outdoor temperatures (i.e. Hi_A) less warm water
suffices.

NOTE

If by mistake the value of [3-03] is set higher than the
value of [3-02], the value of [3-03] will always be used.

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

37

[4] Disinfection function

This mode will disinfect the domestic hot water tank by periodically
heating the domestic water to a specific temperature.

NOTE

If a domestic hot water tank is installed, the disinfection
function is enabled by default.

■ [4-00] Status: defines whether the disinfection function is turned

ON (1) or OFF (0).

■ [4-01] Operation interval: day of the week at which the domestic

water should be heated.

■ [4-02] Start time: time at which the disinfection operation is

started

Even if all schedule timers are de-activated and there is no reheat
function active, the disinfection function will operate if a domestic hot
water tank is installed and field setting [4-00] is set to ON.

The disinfection function field settings must be configured
by the installer according to national and local regulations.

Refer to "[5] Automatic setback and disinfection set point" for
temperature set points.

[5] Automatic setback and disinfection set point

See also "[4] Disinfection function" on page 38 for more information
about the disinfection operation.

■ [5-00] Set point: disinfection water temperature to be reached

■ [5-01] Interval: time period defining how long the disinfection

temperature set point should be maintained

T

ABC

D

E

F

G

t

A Storage operation (if activated)
B Reheat operation (if activated)
C Disinfection operation (if activated)

Field settings

D Disinfection operation temperature [5-00] (e.g. 70°C)
E Hot water storage temperature [b-03] (e.g. 60°C)
F Reheat maximum water temperature [b-01] (e.g. 45°C)

G Reheat minimum water temperature [b-00] (e.g. 35°C)

t Time

T Domestic hot water tank temperature

See also "[2] Automatic setback function" on page 37 for more
information about setback operation.

■ [5-02] Leaving water setback temperature.

■ [5-03] Room setback temperature.

■ [5-04] Setting not available

[6] Option setup

■ [6-00] Domestic hot water tank option

If the domestic hot water tank is installed, its operation must be
enabled by field setting. Default [6-00]=0 which means no tank is
installed. Set [6-00] to 1 if the optional domestic hot water tank is
installed.

NOTE

When enabling the domestic hot water tank option
be aware that the advised default settings become
active:

■ [1-00]=1=automatic night storage

■ [4-00]=1=disinfection function

■ [6-01] External room thermostat option

If the optional external room thermostat is installed, its operation
must be enabled by field setting. Default [6-01]=0, which means
no external room thermostat is installed. Set [6-01] to 1 if the
optional external room thermostat is installed.
The external room thermostat only gives an ON/OFF signal to
the heat pump based on the room temperature. Because it does
not give continuous feedback information to the heat pump, it is
supplementary to the remote controller room thermostat
function. To have a good control of the system and avoiding
frequent ON/OFF it is advised to use the automatic weather
dependent set point operation.

■ [6-02] Heater kit

Once installed, you can activate the heater kit by changing field
setting [6-02]=1.

From that moment on, the heat pump system will take the heater
kit into account whilst deciding operation. When the heater is
actually operating, the heater symbol ( is shown on the remote
controller. There is no step 1-2 indication.

For more information, see installation manual of the heater kit,
especially concerning the test run for the heater kit.

■ [6-03] Setting not available

■ [6-04] Benefit kWh rate power supply mode

If benefit kWh rate power supply is used, the mode must be
selected. Default [6-04]=0 which means no benefit kWh rate
power supply is used.
Set [6-04] to 1 to use benefit kWh rate power supply mode 1
(normally closed contact which will open when the power supply
is interrupted), or set [6-04] to 2 to use benefit kWh rate power
supply mode 2 (normally opened contact which will close when
the power supply is interrupted).

See "Connection to a benefit kWh rate power supply" on page 32 for
more information.

[7] Option setup

■ [7-00] Setting not available.

■ [7-01] Setting not available.

■ [7-02] See chapter "9.8. Multiple set point control" on page 46.

■ [7-03] See chapter "9.8. Multiple set point control" on page 46.

■ [7-04] See chapter "9.8. Multiple set point control" on page 46.

Installation manual

38

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

[8] Option setup

C

■ [8-00] Remote controller temperature control

When using the remote control delivered with the unit, 2 types of
temperature control are possible. Default [8-00]=1 which means
that the remote controller is used as room thermostat, so the
remote controller can be placed in the living room to control the
room temperature. Set [8-00] to 0 to use the unit in leaving water
temperature control.

■ [8-01] Backup heater optional setting

This setting applies to installations with a backup heater
installed (refer to "[6-02] Heater kit" on page 38).

■ [8-01]=0 (default)

During benefit kWh rate power supply mode the backup
heater will not operate. No automatic heat pump operation
stop is performed at lower ambient temperatures.

■ [8-01]=1

During benefit kWh rate power supply mode the backup
heater will operate automatically in emergency mode. If the
ambient temperature is lower than –25°C, the heat pump
operation will stop and the unit will automatically change to
emergency operation.

For more information about connections to the backup heater,
refer to the backup heater installation manual.

■ [8-02] Emergency operation

During emergency mode, heating is only done by the heater kit,
not by the heat pump.

Activation of emergency mode is done by changing field setting
[8-02]=1.

Activating the emergency mode will stop the heat pump
operation. The pump of the indoor unit will be started, but
heating itself is done by the heater kit. If there are no error
conditions in leaving or returning water thermistors, the heater
kit can start to follow emergency operation.

NOTE

Before activating emergency operation, be sure to
activate the heater kit. The heater will stay in
emergency mode until the field setting is set back
to default [8-02]=0.

■ [8-03] Quiet mode

The unit has a quiet mode functionality for which 3 levels can be
selected:

■ [8-03]=1 low noise level 1 (default)

■ [8-03]=2 low noise level 2

■ [8-03]=3 low noise level 3

Activating this quiet mode is done by pushing the QUIET MODE
button on the remote controller or through the schedule timer.

■ [8-04] Freeze-up prevention

The unit has a freeze-up prevention functionality for which
3 levels can be selected:

■ [8-04]=0 prevention level 0 (default: no prevention)

■ [8-04]=1 prevention level 1

■ [8-04]=2 prevention level 2

The freeze-up prevention is only active when the unit is in
thermo OFF condition. If prevention level 1 is enabled, the
freeze-up prevention will start if the outdoor ambient
temperature <4°C and if leaving or return water temperature
<7°C. For prevention level 2, the freeze-up prevention will start
as soon as the ambient temperature <4°C.
For both cases the pump will operate and if leaving or return
water <5°C for 5 minutes the unit will start up to prevent too low
temperatures.
It is advised to enable freeze-up prevention if the indoor unit is
located in a colder ambient room (e.g. garage, ...) to prevent
water freeze-up.

[9] Automatic temperature compensation

If needed, it is possible to adjust some thermistor value of the unit by
a correction value. This can be used as countermeasure for
thermistor tolerances or capacity shortage.

The compensated temperature (= measured temperature plus
compensation value) is then used for controlling the system and will
be displayed in the temperature read-out mode.

■ [9-00] Leaving water temperature compensation value for

heating operation.

■ [9-01] Domestic hot water tank compensation value.

■ [9-02] Thermo ON/OFF admission

By changing this value the operation range for space heating
operation can be modified.
If the ambient temperature becomes higher than (24°C + the
value of [9-02]) no space heating is possible.
Space heating can be requested as long as the ambient
temperature is lower than (20°C + the value of [9-02]).

Example:

[9-02]=–2°C

T

A

24°C–2°C = 22°C

C

B

20°C–2°C = 18°C

A No space heating operation possible
B Request for space heating possible
C Hysteresis area
T Ambient temperature

■ [9-03] Leaving water temperature compensation value for

cooling operation. Not available for heating only model.

■ [9-04] Setting not available.

[A] Option setup

■ [A-00] Current limitation.

This setting provides the possibility to limit the power
consumption of the indoor unit as follows:

■ [A-00]=0 16.5 A (default)

■ [A-00]=1 13.2 A (±80%)

■ [A-00]=2 10.7 A (±65%)

The indoor unit current is limited, the outdoor unit is slave and
will also reduce its power consumption consequently (if other
indoor units loads correspond). However, transient conditions
with higher power consumption are possible.

■ [A-01] Change setting for allowable height difference between

the highest and lowest installed indoor units.
Difference in height between outdoor and indoor units H1≤40 m
Difference in height between lowest and heighest indoor unit
H2≤15 m.
If setting [A-01] is changed, maximum H2 difference can be
increased to 25 m. Depending on H2 level, use the settings in
the table for designated indoor units.

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

39

Example 1:

H1

Example 2:

H2

[b] Domestic hot water set points

The reheat mode will prevent the domestic hot water from cooling

[A-01] setting

0≤x≤15 m 0

15<x≤20 m 1

20<x≤25 m 2

A

[A-01]= 2 (level 2)

down lower than a certain temperature. When enabled the indoor unit
will deliver hot water to the domestic hot water tank if the reheat
minimum value is reached. The domestic water heating will continue
until the reheat maximum temperature is reached. In this way always
a minimum of domestic hot water is available.

■ [b-00] Set point: reheat minimum temperature (see figure

below).

■ [b-01] Set point: reheat maximum temperature (see figure

D

T

below).

ABC

B

[A-01]= 1 (level 1)

C

x=23 m

[A-01]=0 (default)

x=19 m

E

F

G

X

x=15 m

X

[A-01]=0 (default)

[A-01] setting

0≤x≤15 m 0

15<x≤20 m 1

20<x≤25 m 2

[A-01]= 2 (level 2)

A Storage operation (if activated)
B Reheat operation (if activated)
C Disinfection operation (if activated)

Field settings

D Disinfection operation temperature [5-00] (e.g. 70°C)
E Hot water storage temperature [b-03] (e.g. 60°C)
F Reheat maximum water temperature [b-01] (e.g. 45°C)

G Reheat minimum water temperature [b-00] (e.g. 35°C)

t Time

T Domestic hot water tank temperature

t

C

[A-01]= 1 (level 1)

H1

H2

B

x=23 m

[A-01]=0 (default)

x=19 m

A

x=15 m

[A-01]=0 (default)

■ [A-02] Temperature difference for leaving and returning water in

heating mode.
The unit is designed to support radiator operation. The advised
leaving water temperature (set by the remote controller) for
radiators is 65°C. In such a case the unit will be controlled to
realize a temperature difference (ΔT) of 10°C, which means that
the returning water to the unit is around 55°C.
Depending on the installed application (radiators, fan coil
units, ...) or situation, it can be required to change the ΔT. This
can be done by changing field setting [A-02].

■ [A-03] See chapter "9.8. Multiple set point control" on page 46.

■ [A-04] See chapter "9.8. Multiple set point control" on page 46.

■ [b-02] Status: defines whether the weather dependent domestic

water heating is turned ON (1) or OFF (0).
If enabled, the storage set point will be set weather dependent.
In case of a higher ambient temperature (e.g. during summer­time), the cold supply water to the mixing tap (e.g. shower, bath)
will also have a higher temperature. This makes that the
temperature of the hot water from the domestic hot water tank
may be lower to reach the same water mixing temperature from
the shower or bath mixing tap. In this way, with a lower domestic
hot water tank temperature setting the comfort level can be kept
the same but with a lower energy consumption.

T

[b-04]

55°C

A

15°C25°C

A Ambient temperature
T Domestic hot water storage temperature

NOTE

The maximum setting temperature for domestic hot
water can be changed with field setting [b-04]. Other
settings are fixed

Installation manual

40

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

■ [b-03] Set point: storage temperature (see figure above)

NOTE

If weather dependent domestic water heating is
enabled [b-02], the storage temperature will be set
automatically and the field setting [b-03] will be of no
importance.

■ [b-04] Maximal domestic hot water setting during weather

depending domestic hot water setpoint.
Refer to the figure above.

[C] Leaving water temperature limits

To prevent misuse concerning leaving water temperatures, it is
possible to limit the set points.

■ [C-00] Maximum leaving water setpoint in heating operation.

■ [C-01] Minimum leaving water setpoint in heating operation.

■ [C-02] Maximum leaving water setpoint in cooling operation.

■ [C-03] Minimum leaving water setpoint in cooling operation.

■ [C-04] Field setting not available.

[d] Domestic water heating retention times

The heat pump can only work in either space heating operation or
domestic water heating operation. No simultaneous operation is
possible, except when using multiple set point control (see chapter

"9.8. Multiple set point control" on page 46 for more information).

■ [d-00] Set point: minimum operation time for domestic water

heating

■ [d-01] Set point: maximum operation time for domestic water

heating

■ [d-02] Set point: interval minimum stop time of domestic water

heating

Changing the timer values can have an impact on space heating and
domestic water heating heat up timers. The default values are
proposed but can be changed depending on the complete system
installation.

For a detailed explanation about simultaneous request of space
heating and domestic water heating, see chapter "9.6. Simultaneous

demand of space heating and domestic water heating" on page 42.

■ [d-03] Setting not available.

■ [d-04] Setting not available.

[E] Service mode

■ [E-00] Vacuum mode

When recovering/vacuuming of the indoor unit is needed, field
setting [E-00] can be activated. It will force the unit into thermo
OFF and will open the expansion valve of the indoor unit R134a
circuit so full vacuuming is possible.
By default [E-00]=0, set to 1 to enable the vacuum mode.

NOTE

Do not forget to restore the field setting [E-00] to
the default value when vacuuming is finished! See
also "11.3. Vacuuming/recovery and maintenance

on refrigerant side" on page 55.

■ [E-01] Setting not available.

■ [E-02] Setting not available.

■ [E-03] Setting not available.

■ [E-04] Pump only operation

When commissioning and installing the unit it is very important
to get all air out of the water circuit.

Through this field setting the pump can be operated without
actual operation of the unit. By doing so this will enhance the air
removal from the circuit. The pump can operate at different
speed:

■ [E-04]=0 normal operation of the unit (default)

■ [E-04]=1 low pump speed operation

■ [E-04]=2 high pump speed operation

If you select [E-04]=1 or 2 and [6-00]=1, the unit will activate
the domestic hot water 3-way valve and heat/cool 3-way
valve. This function is a helpful feature to get all air removed
out of the system (as well in space heating/cooling as in
domestic hot water heating).

For EKHVMRD:

[E-04]=1 or 2

▼

Pump operation for 20 minutes

space 3-way valve in space heating mode

if [6-00]=1

▼

Pump operation for 10 minutes

3-way valve in domestic hot water heating mode

For EKHVMYD:

[E-04]=1 or 2

▼

Pump operation for 20 minutes

space 3-way valve in space heating mode

if [6-00]=1

▼

Pump operation for 10 minutes

3-way valve in domestic hot water heating mode

▼

3-way valve in domestic hot water heating mode and

Pump operation for 10 minutes

space 3-way valve in cooling mode

See chapter "10. Final check and test run" on page 52 for more
information.

[F] Option setup

■ [F-00] Temperature difference for leaving and returning water in

cooling mode.
Depending on the type of heat emitter in cooling mode (fan coil,
floor heating, etc) the difference in temperature between
entering and leaving water in cooling mode can be modified by
changing setting [F-00]
This setting is only applicable for EKHVMYD-units.

■ [F-01]: Setting not available

■ [F-02]: Heat recovery setting.

Unit heat recovery = heat recovery within 1 indoor unit (the
energy recovered in cooling mode will be used to warm-up the
domestic hot water)

■ [F-02]=1 unit heat recovery is allowed for this unit (default)

■ [F-02]=2 no heat recovery is allowed for this unit

NOTE

Cooling to heating heat recovery is judged by the
outdoor unit logic.

■ [F-03]: Setting not available

■ [F-04]: Setting not available

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

41

9.6. Simultaneous demand of space heating and domestic water heating

Remote controller leaving water temperature control

When the reheat temperature is reached, the further heat up till
storage temperature of the domestic hot water tank will be decided by
the running timers which are programmed by the installer.

1 Reheat operation

When requesting space heating and domestic water heating
(reheat) at the same time, the domestic water will be heated till
maximum reheat temperature, then space heating will start
again.

D

ON
OFF

G

75°C

J

C

H

B

F

ON
OFF

35°C

A

A Operation

Space heating

Domestic water heating

B Domestic hot water reheat thermo-on request
C Domestic hot water tank temperature
D Leaving water thermo-on request

F Domestic hot water lower limit temperature

G Domestic hot water upper limit temperature

(maximum possible storage temperature) [b-03]

H Domestic hot water reheat minimum temperature [b-00]

J Domestic hot water reheat maximum temperature [b-01]

ON ON

OFF OFF

2 Storage operation

When requesting space heating and domestic water heating
(storage) at the same time, domestic water will be heated
according to running timer, then space heating will start again
according to running timer, then domestic water heating will start
again according to running timer, this will continue till storage set
point is reached.

D

ON
OFF

G

75°C

C

J

H

B

F

ON
OFF

35°C

A

3

2

1

A Operation

Space heating

Domestic water heating

B Domestic hot water storage thermo-on request
C Domestic hot water tank temperature
D Leaving water thermo-on request

F Domestic hot water lower limit temperature

G Domestic hot water upper limit temperature

(maximum possible storage temperature) [b-03]

H Domestic hot water reheat minimum temperature [b-00]

J Domestic hot water reheat maximum temperature [b-01]

ON ON

OFF OFF

1 Maximum operation time for domestic water heating

(initial 30 minutes [d-01])

2 Interval minimum stop time for domestic water heating

(initial 15 minutes [d-02])

3 Maximum operation time for domestic water heating

(initial 30 minutes [d-01])

Installation manual

42

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

External room thermostat

K

K

When the reheat temperature is reached, the further heat up of the
domestic hot water tank will be decided by the external room
thermostat thermo conditions and running timers which are
programmed by the installer.

1 Reheat operation

When requesting space heating and domestic water heating
(reheat) at the same time, the domestic water will be heated till
maximum reheat temperature, then space heating will start
again.

2 Storage operation

When requesting space heating and domestic water heating
(storage) at the same time, domestic water will be heated
according to running timer, then space heating will start again
according to running timer, then domestic water heating will start
again according to running timer, this will continue till storage set
point is reached.

E

K

+X°C

–X°C

L

E

K

D

+X°C

–X°C

ON
OFF

G

J

C

H

B

F

ON
OFF

A

A Operation

Space heating

Domestic water heating

B Domestic hot water reheat thermo-on request
C Domestic hot water tank temperature
D Room temperature thermo-on request

E Remote controller room temperature
F Domestic hot water lower limit temperature

G Domestic hot water upper limit temperature

(maximum possible storage temperature) [b-03]

H Domestic hot water reheat minimum temperature [b-00]

J Domestic hot water reheat maximum temperature [b-01]

K External room thermostat set point

L External room thermostat ON/OFF hysteresis

ON ON

OFF OFF

75°C

35°C

L

D

ON
OFF

G

75°C

C

J

H

B

F

ON
OFF

35°C

A

3

2

1

A Operation

Space heating

Domestic water heating

B Domestic hot water storage thermo-on request
C Domestic hot water tank temperature
D Room temperature thermo-on request
E Remote controller room temperature
F Domestic hot water lower limit temperature
G Domestic hot water upper limit temperature

(maximum possible storage temperature) [b-03]

H Domestic hot water reheat minimum temperature [b-00]
J Domestic hot water reheat maximum temperature [b-01]
K External room thermostat set point
L External room thermostat ON/OFF hysteresis

ON ON

OFF OFF

1 Maximum operation time for domestic water heating

(initial 30 minutes [d-01])

2 Interval minimum stop time for domestic water heating

(initial 15 minutes [d-02])

3 Maximum operation time for domestic water heating

(initial 30 minutes [d-01])

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

43

Remote controller room temperature control

When the reheat temperature is reached, the further heat up till
storage temperature of the domestic hot water tank will be decided by
the remote controller room thermostat in order to prevent the room
temperature to drop too much.

1 Reheat operation

When requesting space heating and domestic water heating
(reheat) at the same time, the domestic water will be heated till
maximum reheat temperature, then space heating will start
again.

K

+0.5°C

–0.5°C

E

–3.0°C

D

ON
OFF

G

75°C

J

C

H

B

F

ON
OFF

35°C

A

A Operation

Space heating

Domestic water heating

B Domestic hot water reheat thermo-on request
C Domestic hot water tank temperature
D Room temperature thermo-on request

E Remote controller room temperature
F Domestic hot water lower limit temperature

G Domestic hot water upper limit temperature

(maximum possible storage temperature) [b-03]

H Domestic hot water reheat minimum temperature [b-00]

J Domestic hot water reheat maximum temperature [b-01]

K Remote controller thermostat set point

ON ON

OFF OFF

2 Storage operation

When requesting space heating and domestic water heating
(storage) at the same time, domestic water will be heated, but as
soon as the room temperature drops 3°C from set point, space
heating will start till 0.5°C above set point, then domestic water
will be heated again till storage set point.

K

+0.5°C

–0.5°C

E

–3.0°C

D

ON
OFF

G

75°C

C

J

H

B

F

ON
OFF

35°C

A

4

1 3

5

A Operation

Space heating

Domestic water heating

B Domestic hot water storage thermo-on request
C Domestic hot water tank temperature
D Room temperature thermo-on request

E Remote controller room temperature
F Domestic hot water lower limit temperature

G Domestic hot water upper limit temperature

(maximum possible storage temperature) [b-03]

H Domestic hot water reheat minimum temperature [b-00]

J Domestic hot water reheat maximum temperature [b-01]

K Remote controller thermostat set point

ON ON

OFF OFF

1 Minimum operation time for domestic water heating

(initial 10 minutes [d-00])

2 Maximum operation time for domestic water heating

(initial 30 minutes [d-01])

3 Interval minimum stop time for domestic water heating

(initial 15 minutes [d-02])

4 No simultaneous operation
5 Timers for domestic water heating start
6 Timer for space heating start

(a) The minimum operation time is only valid when room temperature is more

than 3°C lower as set point and set point J is reached.

(b) The maximum operation time is only valid when room temperature is more

than 0.5°C lower as set point and set point J is reached.

6

2

(a)

(b)

Installation manual

44

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Simultaneous

request space

heating and

domestic water

heating?

Yes (1)

Domestic hot water
production will start

No

Normal operation

space heating or

domestic water

heating

Domestic hot water

temperature reached

A=minimum ([b-01];

55°C)?

Ye s

Leaving water

control?

No

External room

thermostat contol?

No

Remote controller room

thermostat control.

(1) are in relation with each other
(2) are in relation with each other
(*) Storage set point can be automatic value if [b-02]=1

No Domestic hot water

Ye s

Ye s

production will

continue without time

limit till A is reached.

Storage setpoint [b-03]

reached? (*)

Yes Yes (2)

Operation will switch to

space heating

Storage setpoint [b-03]

reached? (*)

Yes Yes No

Operation will switch to

space heating

No Timer [d-01] (30

minutes) passed

since? (1)

Operation will

switch to space

heating

Timer [d-02] (15

minutes) passed

sicne? (2)

Ye s

No Room

temperature

–3°C?

<T

set

No Operation will

No Space heating

No

continue in

domestic hot water

operation will

continue till timer

finished

Timer [d-01] (30

minutes) passed

since? (1)

Operation will

continue in

domestic hot water

No

Timer [d-00] (10

minutes) passed

since? (1)

Yes (2)

Ye s

Operation will

switch to space

heating

Yes (2) Space heating

Timer [d-02] (15

minutes) passed

since? (2)

No

operation will

continue timer till

finished

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

45

9.7. Simultaneous demand of space cooling and domestic water heating

The unit can perform simultaneous operation of cooling and domestic
water heating.

During cooling operation, the energy taken from the cooled motor will
be transferred into energy to heat up the domestic water. It is a
recovery function and is controlled automatically by the system.

This heat recovery is only possible if heat recovery operation is
permitted (it is an installation related setting).

9.8. Multiple set point control

If you want to use multiple set point control, a temperature reducing
device (TRD) is needed. The temperature reducing device converts
the high inlet water temperature to a reduced water outlet
temperature which will be delivered to the appliance(s).

When temperature reducing devices are installed, the system can be
configured to use multiple water set points.

The water set points can be selected in function of multiple set point
operation patterns.

Below the 2 possible patterns are explained in detail.

Multiple set point control according to pattern A

During normal operation, domestic water heating and space heating
modes are separated and activated intermittent to fulfil a
simultaneous request. Therefor multiple set point pattern A can be
configured to allow simultaneous domestic water heating and space
heating operation without intermission.

Schematic overview:

Pattern A design Classic design

■ During domestic water heating operation, the water temperature
set point is normally higher than the set point requested during
space heating operation. The valve allowing water to enter the
domestic hot water tank coil is open. The heat pump will deliver
water with a higher temperature which is needed for production
of the domestic hot water. At that time, the lower temperature
appliances have to be protected against the higher water
temperature by a temperature reducing valve.

The configuration of pattern A allows 2 space heating set points and
one (same as in the classic design) domestic hot water set point.

The request signals for space heating can be implemented in 2
different ways (installer choice):

■ thermo ON/OFF signal (from external room thermostat)

Space 1 DHWSpace 2

TRD

TRD

■ status signal (active/not active) from the corresponding
temperature reducing device (TRD)

Space 1

DHWSpace 2

TRD TRD

Space 1 DHW Space 1

M

TRD

1

DHW

Protection is required by means
of a temperature reducing
device (TRD) (depending on set
point)

Indoor unit

1 Domestic hot water shut-off valve (field supply)

DHW Domestic hot water tank

TRD Temperature reducing device

Space 1 Space 1

Balancing bottle

■ During space heating operation, water is provided based on the
selected water temperature set point for space heating. A
shut-off valve (field supply) must be installed in the domestic hot
water tank coil circuit. The valve must be closed to protect the
domestic hot water tank from cooling down by lower temperature
water going through the coil during space heating. Connection
and control of this shut-off valve is the reponsability of the
installer.

Indoor unit

DHW Domestic hot water tank

TRD Temperature reducing device

Space 1 Space 1

Space 2 Space 2

Balancing bottle

The electrical connections on the unit should be done on the optional
demand PCB.

The configuration of pattern A is done by field settings:

1 Select the appropriate pattern: [7-02]=0

2 Turn on multiple set point 1: [7-03]=0 ➞ [7-03]=1

Turn on multiple set point 2: [7-04]=0 ➞ [7-04]=1

3 Enter the temperature multiple set point 1: [A-03] (see below)

Enter the temperature multiple set point 2: [A-04] (see below)

Configuration example:

Set

point

Domestic
hot water

Space 1 65°C [A-03] OFF ON/OFF ON ON OFF

Space 2 35°C [A-04] OFF ON/OFF ON OFF ON

Resulting heat pump water OFF >70°C 65°C 65°C 35°C

70°C

(a) The water temperature needed to reach this set point of course is higher

than 70°C.

Field

setting

(a)

[b-03] OFF ON OFF OFF OFF

Thermo status

Installation manual

46

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

NOTE

■ If the system is configured according to pattern A,
nor the remote controller room thermostat
function (default OFF if multiple set point is
selected) nor the external room thermostat (as
replacement of the remote controller room
thermostat function) may be used.

■ The remote controller water temperature value is
ignored when pattern A is active.

■ It is the installers responsibility to make sure no
unwanted situations can occur (e.g. too high
water temperatures towards floor heating loops,
etc.).

■ It is the installers responsibility to make sure the
water circuit is well balanced (e.g. when a
domestic hot water request occurs, there will be
sufficient flow towards other appliances as well,
etc.)

■ Daikin does not offer any temperature reducing
device (TRD). This system only provides the
possibility to use multiple set points.

■ It is advised to only use the automatic storage
functionality for domestic water heating when
applying pattern A (with a high set point
temperature).

Multiple set point control according to pattern B

The basic setup of multiple set point pattern B is the same as a
normal classic design, so again no domestic water heating and space
heating is possible simultaneously.

Multiple set point pattern B is focussed on space heating operation
and allows using multiple water set points in combination with the
remote controller or external room thermostat.

The configuration of pattern B allows 3 space heating set points and
1 domestic hot water set point.

The request signals for space heating can be implemented in 2
different ways (installer choice):

■ thermo ON/OFF signal (from external room thermostat)

A

Space 1

TRD

Space 2 Space 0

TRD

M

DHW

■ status signal (active/not active) from the corresponding
temperature reducing device

A

Space 1 Space 2 Space 0

TRD

TRD

M

DHW

Indoor unit

DHW Domestic hot water tank

TRD Temperature reducing device

Space 0 Space 0

Space 1 Space 1

Space 2 Space 2

Balancing bottle

A Classic room thermostat control with remote controller room

thermostat function and external room thermostat

Space 0, not using a temperature reducing device (TRD), always
needs to be linked with the highest water temperature set point and
can be controlled by the remote controller room thermostat function
or by the external room thermostat. Settings for space 0 can be made

on the remote controller (same as during normal operation

(1)

).

The electrical connections on the unit should be done on the optional
demand PCB.

The configuration of pattern B is done by field settings:

1 Select the appropriate pattern: [7-02]=1

2 Turn on multiple set point 1: [7-03]=0 ➞ [7-03]=1

Turn on multiple set point 2: [7-04]=0 ➞ [7-04]=1

3 Enter the temperature multiple set point 1: [A-03] (see below)

Enter the temperature multiple set point 2: [A-04] (see below)

Configuration example:

Set

point

Space 0 65°C Remote

Space 1 45°C [A-03] OFF ON/OFF ON ON OFF

Space 2 35°C [A-04] OFF ON/OFF OFF ON ON

Resulting heat pump water OFF 65°C 45°C 45°C 35°C

Field

setting

controller

Thermo status

OFF ON OFF OFF OFF

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Pattern B can also be used to do some primary multi zoning (if all set
point temperatures are selected the same, no temperature reducing
device (TRD) is required).

Multiple thermo ON signals for 3 rooms can be generated. Thermo
OFF signals are only valid if all requests are OFF.

(1) When using the automatic weather dependent function for setting of

space 0, you have to make sure that the lowest possible temperature of
the space 0 floating set point (including the possible negative shift value)
is higher than the temperature set point of spaces 1 and 2.
This means that field setting [3-03] of space 0 needs to be higher than
temperature set point of spaces 1 and 2.

Installation manual

47

NOTE

■ Leaving water control is not allowed for pattern B.

■ It is the installers responsibility to make sure no

unwanted situations can occur (e.g. too high
water temperatures towards floor heating loops,
etc.).

■ It is the installers responsibility to make sure the
water circuit is well balanced (e.g. when a
domestic hot water request occurs, there will be
sufficient flow towards other appliances as well,
etc.)

■ Daikin does not offer any temperature reducing
device (TRD). This system only provides the
possibility to use multiple set points.

■ When space 0 is in thermo OFF, but space 1 or 2
are active, space 0 will be fed with water at a
temperature equal to the highest set point of
spaces 1 and 2.
This can lead to unwanted heating of space 0.

Installation manual

48

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

9.9. Field setting table

First

Second
code

code

0 Remote control setup

1 Automatic storage timing for domestic water heating

2 Automatic setback function

3 Weather dependent set point

4 Disinfection function

5 Automatic setback and disinfection set point

6 Option setup

7 Option setup

Setting name

00 User permission level 2 2~3 1 —

01 Room temperature compensation value 0 –5~5 0.5 °C

02 Not applicable. Do not change the default value. 1 — — —

03 Status: space heating schedule timer mode

Method 1=1 / Method 2=0

04 Status: space cooling schedule timer mode

Method 1=1 / Method 2=0

00 Status: night time storage 1 (ON) 0/1 — —

01 Night time storage start time 1:00 0:00~23:00 1:00 hour

02 Status: day time storage 0 (OFF) 0/1 — —

03 Day time storage start time 15:00 0:00~23:00 1:00 hour

00 Status: setback operation 1 (ON) 0/1 — —

01 Setback operation start time 23:00 0:00~23:00 1:00 hour

02 Setback operation stop time 5:00 0:00~23:00 1:00 hour

00 Low ambient temperature (Lo_A) –10 –20~5 1 °C

01 High ambient temperature (Hi_A) 15 10~20 1 °C

02 Set point at low ambient temperature (Lo_Ti) 70 25~80 1 °C

03 Set point at high ambient temperature (Hi_Ti) 45 25~80 1 °C

00 Status: disinfection operation 1 (ON) 0/1 — —

01 Disinfection operation day selection Fri Mon~Sun — —

02 Disinfection operation start time 23:00 0:00~23:00 1:00 hour

00 Set point: disinfection operation temperature 70 60~75 5 °C

01 Disinfection operation time duration 10 5~60 5 min

02 Leaving water setback temperature 5 0~10 1 °C

03 Room setback temperature 18 17~23 1 °C

04 Not applicable. Do not change the default value. 0 — — —

00 Domestic hot water tank installed 0 (OFF) 0/1 — —

01 Optional room thermostat installed 0 (OFF) 0/1 — —

02 Optional backup heater installed 0 (OFF) 0/1 — —

03 Not applicable. Do not change the default value. 0 — — —

04 Benefit kWh power supply mode 0 0/2 1 —

00 Not applicable. Do not change the default value. 0 — — —

01 Not applicable. Do not change the default value. 0 — — —

02 Multiple set point pattern 0 (A) 0/1 — —

03 Multiple set point 1 0 (OFF) 0/1 — —

04 Multiple set point 2 0 (OFF) 0/1 — —

Installer setting at variance with default value

Default

value

1 (ON) 0/1 — —

1 (ON) 0/1 — —

Range Step UnitDate Value Date Value

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

49

First
code

Second
code

Setting name

Installer setting at variance with default value

Default

value

Range Step UnitDate Value Date Value

8 Option setup

00 Remote controller temperature control 1 (ON) 0/1 — —

01 Backup heater kit optional setting 1 (ON) 0/1 — —

02 Emergency mode 0 (OFF) 0/1 — —

03 Status: low noise level 1 1~3 1 —

04 Status: freeze-up prevention 0 0~2 1 —

9 Automatic temperature compensation

00 Leaving water temperature compensation value

(heating)

0 –2~2 0.2 °C

01 Domestic hot water tank compensation value 0 –5~5 0.5 °C

02 Thermo ON/OFF admission 0 –5~5 0.5 °C

03 Leaving water temperature compensation value

(cooling)

0 –2~2 0.2 °C

04 Not applicable. Do not change the default value. 0 — — —

A Option setup

00 Current limitation. 0 0~2 1 —

01 Indoor unit height difference setting 0 0~2 1 —

02 Set point: heating required temperature difference

for leaving and returning water

03 Set point: multiple set point 1 required temperature

value

04 Set point: multiple set point 2 required temperature

value

10 5~15 1 °C

35 25~80 1 °C

65 25~80 1 °C

b Domestic hot water set points

00 Set point: reheat minimum temperature 35 35~65 1 °C

01 Set point: reheat maximum temperature 45 35~75 1 °C

02 Status: weather dependent domestic water

heating

1 (ON) 0/1 — —

03 Set point: storage temperature 70 45~75 1 °C

04 Automatic maximum domestic hot water storage

temperature

70 55~75 1 °C

C Leaving water temperature limits

00 Set point: heating leaving water maximum

temperature

01 Set point: heating leaving water minimum

temperature

02 Set point: cooling leaving water maximum

temperature

03 Set point: cooling leaving water minimum

temperature

80 37~80 1 °C

25 25~37 1 °C

20 18~22 1 °C

5 5~18 1 °C

04 Not applicable. Do not change the default value. 0 — — —

d Domestic water heating retention times

00 Set point: minimum time for domestic water

heating

01 Set point: maximum time for domestic water

heating

02 Set point: interval minimum stop time of domestic

water heating

10 5~20 1 —

30 10~60 5 —

15 5~30 5 —

03 Not applicable. Do not change the default value. 15 — — —

04 Not applicable. Do not change the default value. 40 — — —

E Service mode

00 Vacuum mode R134a 0 0/1 — —

01 Not applicable. Do not change the default value. 0 — — —

02 Not applicable. Do not change the default value. 0 — — —

03 Not applicable. Do not change the default value. 1 — — —

04 Pump only operation 0 0~2 1 —

Installation manual

50

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

First
code

Second
code

Setting name

Installer setting at variance with default value

Default

value

Range Step UnitDate Value Date Value

F Option setup continued

00 Set point: cooling required temperature difference

for leaving and returning water

5 5~15 1 °C

01 Not applicable. Do not change the default value. 0 — — —

02 Heat recovery allowance 1 0~2 1 —

03 Not applicable. Do not change the default value. 10 — — —

04 Not applicable. Do not change the default value. 50 — — —

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

51

10. FINAL CHECK AND TEST RUN

10.3. Indoor unit individual test run

10.1. Final check

Before switching on the unit, read the following:

■ When the complete installation and all necessary settings have
been carried out, be sure that all panels of the unit are closed. If
this is not the case, inserting your hand through the remaining
openings can cause serious injury due to electrical and hot parts
inside the unit.

■ The service panel of the switch box may only be opened by a
licensed electrician for maintenance purposes.

In order to purge most of the air out of the system perform a pump
operation as described below:

1 Change field setting [E-04]

The default value is 0.

■ When changing the setting to 1, the pump will operate at low

speed (pump only, the unit will not operate).

■ When changing the field setting to 2, the pump will operate at

high speed.

2 When air purging is finished, change the field setting back to 0.

It is the responsibility of the installer to make sure that the air is
purged out of the unit and system.

NOTE

■ Be sure that all stop valves are open. (Refer to vacuuming

■ Be sure that all water valves are open.

When using thermostatic radiator valves, make sure to
open all valves during air purging operation.

procedure of the outdoor unit)

Multi tenant power supply check

Cut off the power supply to the indoor unit. If the multi tenant power
supply is installed, the remote controller will keep operating. Confirm
that the remote controller still operates for more than 15 seconds
after the power supply was cutt off.

10.2. System test run

Before you can check test operation of each indoor unit separately,
you have to do the system test run. System test run is explained in
the installation manual of the outdoor unit. This is an automatic test
run which can take up to more than 1 hour.

When the system test run is finished, it is possible to do an individual
test run as described in "10.3. Indoor unit individual test run" on

page 52. During this test run, the installer should check indicated

items.

NOTE

The installer is obliged to verify correct operation of the indoor and
outdoor unit after installation. Therefor a test run must be performed
according to the procedures described below. At any time it is
possible to check correct operation of space heating and domestic
water heating.

NOTE

When the indoor units and outdoor unit are powered
on for the first time, an initialisation takes place. This
will take maximum 12 minutes.

When using the remote controller during the
initialisation, an error code (UH) can be displayed.

■ During the first start up of the unit (the first 48
hours of compressor running), it might happen
that the noise level of the unit is higher than
mentioned in the technical specifications. This is
not an abnormal event.

■ Start up of the unit in space heating mode is only
possible when the outdoor ambient temperature is
lower than 20°C. Refer to "[9-02] Thermo ON/OFF

admission" on page 39 how to increase this

temperature limit.

Temperature read-out mode

On the remote controller, the actual temperatures can be displayed.

1 Push and hold the ba button for 5 seconds.

The leaving water temperature is displayed (icons l and =
and é are blinking).

2 Use the pi and pj buttons to display:

■ The entering water temperature (icons l and = are
blinking and the é icon is flashing slowly).

■ The indoor temperature (icons l and = are blinking).

■ The outdoor temperature (icons l and u are blinking).

■ The hot water supply tank temperature (icons l and w are

blinking).

3 Push the ba button again to leave this mode. If no button is

pressed, the remote controller leaves the display mode after 10
seconds.

Procedure for space heating/cooling

1 Check the leaving water and entering water temperature through

the remote controller read-out mode and write down the
displayed values. See "Temperature read-out mode" on

page 52.

2 Select the operation mode: heating or cooling.

3 Push the z button 4 times so the t icon will be displayed.

4 Perform the test as follows (when no action is performed, the

user interface will return to normal mode after 10 seconds or by
pressing the z button once):

To test the space heating/cooling operation push the y button
to start the test run operation.

5 The test run operation will end automatically after 30 minutes or

when reaching the set temperature. The test run operation can
be stopped manually by pressing the z button once. If there are
misconnections or malfunctions, an error code will be displayed
on the user interface. Otherwise, the user interface will return to
normal operation.

6 To resolve the error codes, see "12.5. Error codes" on page 58.

Installation manual

52

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

7 Check the leaving water and entering water temperature through

C–

the remote controller read-out mode and compare them with the
values noted with step 1. After 20 minutes of operation an
increase/decrease of the values should confirm the space
heating/cooling operation.

11.1. Maintenance activities

DANGER: ELECTRICAL SHOCK

See "2. General safety precautions" on page 2.

NOTE

NOTE

To display the last resolved error code, push the z
button 1 time. Push the z button again 4 times to
return to normal mode.

It is not possible to perform a test run if a forced
operation from the outdoor unit is in progress. Should
forced operation be started during a test run, the test
run will be aborted.

Procedure for domestic water heating

1 Check the domestic hot water tank temperature through the

remote controller read-out mode. See "Temperature read-out

mode" on page 52.

2 Push the w button for 5 seconds.

The w icon will start blinking with 1 second intervals.

3 Keep the unit operating for 20 minutes and check the domestic

hot water tank temperature through the remote controller again.
An increase of the value with 5°C should confirm the domestic

water heating operation.

4 The operation will stop if the tank storage temperature has been

reached.

11. MAINTENANCE AND SERVICE

WARNING: ELECTRIC SHOCK

■ Before carrying out any maintenance or repair activity,
always switch off the circuit breaker on the supply
panel, remove the fuses or open the protection
devices of the unit.

■ Make sure that before starting any maintenance or
repair activity, also the power supply to the outdoor
unit is switched off.

■ Before carrying out any maintenance or repair activity,
always switch off the multi tenant power supply.

■ 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 the figure
below with a tester and confirm that the voltage of the
capacitor in the main circuit is no more than 50 V DC.

In order to ensure optimal availability of the unit, a number of checks
and inspections on the unit and the field wiring have to be carried out
at regular intervals.

This maintenance should be carried out by your local installer.

To execute the maintenance
activities as mentioned below, it is
only required to remove the front
decoration panel.

To take away the front decoration
panel, remove the 2 bottom screws
and then unhitch the panel.

2x

C+C+C+

C–

C–

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

■ Make sure you do not touch a conductive section.

■ Do not rinse the indoor unit. This may cause electric

shocks or fire.

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.

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

53

Checks

The described checks must be executed at least once a year by
qualified personnel.

1 Pressure relief valve hose

Check that the pressure relief valve hose is positioned
appropriately to drain the water.

2 Water pressure relief valve

Check for correct operation of the pressure relief valve by
turning the red knob on the valve counter-clockwise:

■ If you do not hear a clacking sound, contact your local dealer.

■ In case the water keeps running out of the unit, close both

the water inlet and outlet shut-off valves first and then contact
your local dealer.

3 Indoor unit switch box

Carry out a thorough visual inspection of the switch box and look
for obvious defects such as loose connections or defective
wiring.

4 Water pressure

Check if the water pressure is above 1 bar.
If necessary add water.

5 Water filter

Clean the water filter.

11.2. 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: R134a

(1)

GWP

value: 1300

(1)

GWP = global warming potential

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.

Installation manual

54

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

11.3. Vacuuming/recovery and maintenance on refrigerant side

This flow chart indicates the main items and actions which have to be considered during vacuuming/recovery operations on the system. When
certain settings and operations explained in the flow chart are not followed this can be improper operation of the unit due to bad vacuuming/
recovery. In case of problems, please contact your local dealer.

R134a circuit needs

to be maintenanced?

Yes Indoor unit remocon

setting [E-00]=1 to

open electronic

expansion valve

No

R410A circuit needs

to be maintenanced?

Ye s

First installation

No

Ye s Ye s

Indoor unit was

powered on?

No

Other indoor or

outdoor unit(s) were

powered on?

No Open stop valve

Ye s Ye s Ye s

Start recovery/

vacuuming of
R134a circuit

indoor units

(a)

. Field

(2)

piping and
indoor unit

R410A

vacuuming can

start

Maintenance

Complete indoor

system R410A

circuit?

No

1 indoor unit?

Close this indoor

unit stop valve

(a)

(2)

Valves on R410A
circuit need to be

opened. Apply

outdoor unit field

setting 2-21 (see

installation manual of

outdoor unit)

Open stop valve

(a)

indoor units.

(2)

Field piping and

indoor unit R410A

vacuuming can start

Ye s

Open all

stopvalves (1)

(a)

and (2)

Apply outdoor

unit field setting

2-21 (see

installation

manual of

outdoor unit)

Field piping +

indoor + outdoor

unit(s)?

No

Field piping only +

indoor unit

Close stop valve

outdoor unit (1)

Open stop valve
indoor unit (2)

(a)

(a)

Apply outdoor unit

field setting 2-21

(see installation

manual of outdoor

unit)

Apply outdoor

unit field setting

2-21 (see

installation

manual of

outdoor unit)

Recovery start +

measure

recovered

R410A amount

Maintenance

Start vacuuming

Recharge

system with

measured

R410A amount

Cancel outdoor
unit field setting

2-21 (see

installation

manual of

outdoor unit)

(a) (1) and (2) refers to the legend of the figure in next chapter "System overview" on page 56.

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Open stop
valve(s) (if
applicable)

Restart system

Installation manual

55

System overview

1
3

2
3

4

1 Stop valve outdoor unit
2 Stop valve indoor unit
3 Brazing point
4 Field piping

Recovery/vacuuming overview for 1 indoor unit maintenance (R410A circuit connections)

1

VACU

12.2. Opening the unit

■ To facilitate access to the air
purge valve, thermal cut-out,
3-way valve, thermistors, field
wiring duct, ..., the top
decoration panel of the unit
can be removed by removing
the 2 screws at the rear and
then unhitch the panel. Both
the drain plates can be
removed.

■ To gain access to the indoor
unit at the front side, the total
switch box can be removed
from the unit.

1 To remove the front decoration

panel, remove the 2 bottom
screws and then unhitch the
panel.

2x

4x

2x

234

1 Pressure reducing valve
2 Nitrogen
3 Refrigerant R410A tank (siphon system)
4 Measuring instrument
5 Vacuum pump

5

12. TROUBLESHOOTING

This section provides useful information for diagnosing and correcting
certain troubles which may occur in the unit.

This troubleshooting and related corrective actions may only be
carried out by your local installer.

12.1. General guidelines

Before starting the troubleshooting procedure, carry out a thorough
visual inspection of the unit and look for obvious defects such as
loose connections or defective wiring.

When carrying out an inspection on the switch box of the
unit, always make sure that the main switch of the unit is
switched off.

When a safety device was activated, stop the unit and find out why
the safety device was activated before resetting it. Under no
circumstances safety devices may be bridged or changed to a value
other than the factory setting. If the cause of the problem can not be
found, call your local dealer

If the pressure relief valve is not working correctly and is to be
replaced, always reconnect the flexible hose attached to the pressure
relief valve, to avoid water dripping out of the unit!

.

2 Loosen the front screws and unhitch the total switch box.

Switch off all power supply – also outdoor unit power
supply, etc., ... – before removing the switch box
service cover.

The switch box can now be placed just before the indoor unit.
The compressor cable located at the backside of the unit can be
untied to place the switch box further away from the unit.

1

4x

1

2

2

1

MAX.

15 cm

1

3

5

■ Make sure to always fix the cover with the screws
when removing the switch box.

■ Parts inside the unit can be hot and burning is
possible.

■ Make sure to switch off all power supplies before
removing the switch box from the unit.

4

Installation manual

56

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

12.3. Draining the system

12.4. General symptoms

For EKHVMRD

If draining is needed, connect the drain hose (2) to the drain valve (1)
as described in the figure below and open the drain valve (1).

1

2

For EKHVMYD

For draining of the system, connect the drain hose (3) to the drain
pan (2) as described in the figure below. Open the drain taps (1) and
let the water flow into the drain pan (2).

1

1

Symptom 1: The unit is turned on (y LED is lit) but the unit is not
heating as expected

POSSIBLE CAUSES CORRECTIVE ACTION

The temperature setting is not
correct.

The water flow is too low. • Check that all shut-off valves of

The water volume in the installation
is too low.

Capacity shortage • Check if the cooling fan at the rear

Symptom 2: Pump is making noise (cavitation)

POSSIBLE CAUSES CORRECTIVE ACTION

There is air in the system. Purge air.

Water pressure at pump inlet is too
low.

Check the controller set point.

the water circuit are completely
open.

• Check if the water filter needs
cleaning.

• Make sure there is no air in the
system (purge air).

• Check on the manometer that
there is sufficient water pressure.
The water pressure must be
>0.3 bar (water is cold), >>0.3 bar
(water is hot).

• Make sure that the expansion
vessel is not broken.

Make sure that the water volume in
the installation is above the minimum
required value (refer to "Checking

the water volume and expansion
vessel pre-pressure" on page 25).

of the switch box is working
properly.

• Check if the unit is not installed in
a too hot location (>30°C).

• Check on the manometer that
there is sufficient water pressure.
The water pressure must be
>0.3 bar (water is cold), >>0.3 bar
(water is hot).

• Check that the manometer is not
broken.

• Check that the expansion vessel is
not broken.

• Check that the setting of the
pre-pressure of the expansion
vessel is correct (refer to "Setting

the pre-pressure of the expansion
vessel" on page 26).

Symptom 3: The water pressure relief valve opens

2

3

The expansion vessel is broken. Replace the expansion vessel.

The water volume in the installation
is too high.

Symptom 4: The water pressure relief valve leaks

Dirt is blocking the water pressure
relief valve outlet.

Symptom 5: The user interface displays "
certain buttons

The current permission level is set to
a level that prevents using the
pressed button.

POSSIBLE CAUSES CORRECTIVE ACTION

Make sure that the water volume in
the installation is under the
maximum allowed value (refer to

"Checking the water volume and
expansion vessel pre-pressure" on
page 25).

POSSIBLE CAUSES CORRECTIVE ACTION

Check for correct operation of the
pressure relief valve by turning the
red knob on the valve counter
clockwise:

• If you do not hear a clacking
sound, contact your local dealer.

• In case the water keeps running
out of the unit, close both the
water inlet and outlet shut-off
valves first and then contact your
local dealer.

nn

nn

POSSIBLE CAUSES CORRECTIVE ACTION

Change the "user permission level"
field setting [0-00], see "Field
settings" in the operation manual.

" when pressing

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

57

Symptom 6: Space heating capacity shortage at low outdoor
temperatures

POSSIBLE CAUSES CORRECTIVE ACTION

The heater kit is not activated. Check that the "heater kit operation

status" field setting [6-02] is turned
on, see "Field settings" in the
operation manual of the indoor unit.

12.5. Error codes

When a safety device is activated, the user interface LED will be
flashing, and an error code will be displayed.

A list of errors and corrective actions can be found in the table below.

Reset the safety by pushing the y button.

In case this procedure for resetting the safety is not successful,
contact your local dealer.

For other error codes which may be displayed during the system test
run or operation, see the installation manual of the outdoor unit.

Error

code

A1 Failure of writing memory

(EEPROM error)

A6 Malfunction of pump in water

circuit (M1P+M2P)

A9 R410A expansion valve error

(K1E)

AA Heater kit thermal cut out error

(if the heater kit option installed)

Heater kit connected to the
benefit kWh rate power supply

AE Water system warning low flow

is expected by the unit.

AJ Capacity error Contact your local dealer.

C1 Bad ACS communication Contact your local dealer.

C4 R410A liquid thermistor error

(R3T)

C5 Domestic hot water tank

thermistor error (R2T)

C9 Returning water thermistor error

(R4T)

CA Heating leaving water thermistor

error (R5T)

CE Cooling leaving water thermistor

error (R9T)

CJ Remote controller thermostat

thermistor error

E1 Compressor PCB error Contact your local dealer.

E3 High pressure error (S1PH) • Check wiring connections on

E3 Thermal cut-out error (Q2L) • Reset the thermal cut-out.

Failure cause Corrective action

Contact your local dealer.

• Make sure waterflow is
possible (open all valves in the
circuit).

• Force clean water through the
unit.

• Check wiring connections.

• Contact your local dealer.

• Make sure the circuit is filled
with water (no air inside).

• Make sure waterflow is
possible (open all valves in the
circuit).

Make sure the heater kit is
connected to a normal power
supply.

• Check filter.

• Make sure all valves are open.

• Check wiring connections.

• Contact your local dealer.

• Check wiring connections.

• Check if the domestic hot
water option is turned active
(refer to field setting [6-00]).

• Contact your local dealer.

• Check wiring connections.

• Contact your local dealer.

• Check wiring connections.

• Contact your local dealer.

• Check wiring connections.

• Contact your local dealer.

Contact your local dealer.

outdoor unit and indoor unit.

• Make sure the circuit is filled
with water (no air inside, e.g.
is the air purge open?)

• Make sure the domestic hot
water tank is filled with water.

• Make sure water flow is
possible (open all valves in the
circuit).

• Make sure the water filter is
not blocked.

• Make sure all refrigerant stop
valves are open.

• Contact your local dealer.

• Contact your local dealer.

Error

code

E4 Low pressure error (B1PL) • Check wiring connections on

E5 Overload activation of

E9 R134a expansion valve error

F3 Discharge temperature error Contact your local dealer.

J3 Discharge thermistor error (R6T) • Check wiring connections.

J5 R134a liquid thermistor error • Check wiring connections.

J6 R410A liquid thermistor error

J7 R410A suction thermistor error

JA R134a high pressure sensor

JC R134a low pressure sensor error

L1 Compressor inverter PCB error Contact your local dealer.

L4 Fin thermistor error • Check wiring connections.

L5 Compressor inverter PCB error Contact your local dealer.

L8 Compressor inverter PCB error Contact your local dealer.

L9 Compressor inverter PCB error Contact your local dealer.

LC Inverter communication problem Contact your local dealer.

LH Converter error Contact your local dealer.

P1 Main compressor PCB error Contact your local dealer.

PJ Bad combination inverter

U2 Power supply error • Check wiring connections.

U4 QA transmission problem Contact your local dealer.

U5 Remote controller error Contact your local dealer.

UA Type connection problem • Wait till initialisation between

UC Address duplication error Contact your local dealer.

UF Transmission problem with

UF QA wiring problem Contact your local dealer.

UH Address error Contact your local dealer.

Failure cause Corrective action

outdoor unit and indoor unit.

• Contact your local dealer.

compressor (M1C)

(K2E) or R410A expansion valve
error (K3E)

(R10T)

(R11T)

error (B1PH)

(B1PL)

components

outdoor unit

Contact your local dealer.

• Check wiring connections.

• Contact your local dealer.

• Contact your local dealer.

• Contact your local dealer.

• Check wiring connections.

• Contact your local dealer.

• Check wiring connections.

• Contact your local dealer.

• Check wiring connections.

• Contact your local dealer.

• Check wiring connections.

• Contact your local dealer.

• Contact your local dealer.

Contact your local dealer.

• Contact your local dealer.

outdoor unit and indoor unit is
finished (after power ON, wait
at least 12 minutes).

• Contact your local dealer.

Contact your local dealer.

Installation manual

58

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

13. UNIT SPECIFICATIONS

Technical specifications

Nominal capacity (heating)
Nominal capacity (cooling)

(kW)
(kW)

EKHVMRD50AAV1 EKHVMRD80AAV1 EKHVMYD50AAV1 EKHVMYD80AAV1

5.6 9 5.6 9
—— 5 8

Casing material Pre-coated sheet metal
Dimensions HxWxD

(mm)

705x600x695

Weight

• with packaging

• without packaging

(kg)
(kg)

110.8 100.8 115.8 115.8
92 92 107 107

Water connections

• water inlet/outlet G 1" (female)

• water inlet/outlet
material

• piping diameter

• maximum working
pressure

(inch)

(bar)

brass

1

4

Refrigerant connections

• discharge side diameter

• suction side diameter

• liquid side diameter

Heating water system
volume

(mm)
(mm)
(mm)

12.7

15.9

9.52

(l)

20~200

Refrigerant type R134a
Pump

• type DC motor

• no. of speed inverter controlled

Sound pressure level
Pressure relief valve water

circuit
Operation range - water

side (heating)
Operation range - water

side (cooling)

(dBa)

(bar)

(°C)

(°C)

40 42 40 42

3

25~80

5~20

(a)

Operation range - outdoor

• space heating

• domestic hot water

(°C)
(°C)

–20~20
–20~35

Operation range - indoor

• Ambient temperature

(a) Water conditions: entering water 55°C/leaving water 65°C. For more information, see data book.

(°C)

5~30

Electrical specifications: power supply

Phase 1N~
Frequency

(Hz)

Voltage range

• minimum

• maximum

(V)
(V)

Voltage tolerance –10%/+6%
Maximum running current
Recommended field fuse

(A)
(A)

EKHVMRD50AAV1 EKHVMRD80AAV1 EKHVMYD50AAV1 EKHVMYD80AAV1

50

220
240

16.5
20

Electrical specifications: multi tenant power supply

Phase 1N~
Frequency
Voltage

(Hz)

(V)

Voltage tolerance –20%/+20%
Maximum running current
Recommended field fuse

(A)
(A)

EKHVMRD50AAV1 EKHVMRD80AAV1 EKHVMYD50AAV1 EKHVMYD80AAV1

50
24

1

3.15

EKHVMRD50+80AAV1 + EKHVMYD50+80AAV1

Daikin Altherma indoor unit

4PW61263-1A – 10.2010

Installation manual

59

NOTES

NOTES

4PW61263-1A 10.2010

Copyright 2010 Daikin