Hitachi RAS-1.5WHVRP2E User manual

–
INSTALLATION
AND OPERATION
MANUAL
–
YUTAKI
OUTDOOR UNIT
PMEN0641 rev.0 - 05/2023
MODELS
RAS-1.5WHVRP2E
RAS-2WHVRP2E
RAS-2.5WHVRP2E
RAS-3WHVRP2E

EN
The English version is the original one; other languages are translated from English. Should any
discrepancy occur between the English and the translated versions, the English version shall
prevail.
ES
La versión en inglés es la original, y las versiones en otros idiomas son traducciones de la inglesa.
En caso de discrepancias entre la versión inglesa y las versiones traducidas, prevalecerá la versión
inglesa.
DE
Die englische Fassung ist das Original, und die Fassungen in anderen Sprachen werden aus dem
Englischenübersetzt. Sollten die englische und die übersetzten Fassungen voneinander abweichen,
so hat die englische Fassung Vorrang.
FR
La version anglaise est la version originale; les autres langues sont traduites de l’anglais. En cas de
divergence entre les versions anglaise et traduite, la version anglaise prévaudra.
IT
La versione inglese è l’originale e le versioni in altre lingue sono traduzioni dall’inglese. In caso di
divergenze tra la versione inglese e quelle tradoe, fa fede la versione inglese.
PT
A versão inglesa é a original; as versões em outras línguas são traduzidas do inglês. Em caso de
divergência entre a versão em língua inglesa e as versões traduzidas, faz fé a versão em língua
inglesa.
DA
Den engelske udgave er originalen, og udgaverne på andre sprog er oversat fra engelsk. Hvis der
forekommer uoverensstemmelser mellem den engelske og den oversae sprogudgave, vil den
engelske udgave være gældende.
NL
De Engelse versie is de originele; andere talen zijn vertaald uit het Engels. In geval van verschillen
tussen de Engelse versie en de vertaalde versies, hee de Engelse versie voorrang.
SV
Den engelska versionen är originalet, och versionerna på andra språk är från engelska
översäningar. I händelse av bristande överensstämmelse mellan den engelska och den översaa
versionerna, skall den engelska versionen vara gilg.
EL
Η αγγλική έκδοση είναι το πρωτότυπο και οι εκδόσεις σε άλλες γλώσσες μεταφράζονται από τα
αγγλικά. Σε περίπτωση που διαπιστωθούν διαφορές μεταξύ της αγγλικής και της μεταφρασμένης
έκδοσης, η αγγλική έκδοση είναι επικρατέστερη.

EN English Original version
ES
Español
Versión traducida
DE
Deutsch
Übersetzte Version
FR
Français
Version traduite
IT
Italiano
Versione tradoa
PT
Português
Versão traduzidal
DA
Dansk
Oversat version
NL
Nederlands
Vertaalde versie
SV
Svenska
Översa version
EL
Ελληνικα
Μεταφρασμένη έκδοση
BG
Български
Преведена версия
CS
Češna
Přeložená verze
HU
Magyar
Lefordíto változat
LT
Lietuvių
Versta versija
PL
Polski
Tłumaczenie wersji oryginalnej
RO
Română
Versiune tradusă
SK
Slovenčina
Preložená verzia
UK
Українська
Перекладена версія

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PMEN0641 rev.0 - 05/2023
I
CONTENTS
Contents
01 General informaon .............................................................................................1
02 Name of parts and dimensional data...................................................................7
03 Electrical data .......................................................................................................9
04 Working range ....................................................................................................11
05 Refrigerant piping...............................................................................................13
06 Electrical and control sengs ............................................................................22
07 Maintenance.......................................................................................................30
08 Commissioning ...................................................................................................34

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II
GENERAL INDEX
General Index
1. General informaon ...................................................................................................1
1.1 General informaon ..........................................................................................2
1.1.1 General notes ..........................................................................................2
1.2 Applied symbols.................................................................................................2
1.3 General safety notes..........................................................................................4
1.3.1 Addional informaon about safety .......................................................4
1.4 Important noce................................................................................................5
1.5 Product guide ....................................................................................................6
1.6 Product list.........................................................................................................6
2. Name of parts and dimensional data.........................................................................7
2.1 YUTAKI Outdoor Unit - RAS-(1.5-3)WHVRP2E ...................................................8
3. Electrical data .............................................................................................................9
3.1 Consideraons.................................................................................................10
3.2 Split system - YUTAKI Outdoor unit..................................................................10
4. Working range ..........................................................................................................11
4.1 Power supply working range ...........................................................................12
4.2 Temperature working range............................................................................12
5. Refrigerant piping .....................................................................................................13
5.1 General notes before performing piping work ...............................................14
5.2 Piping connecon for Outdoor Unit................................................................15
5.2.1 Outdoor unit stop valve.........................................................................15
5.2.2 Brazing work ..........................................................................................17
5.2.3 Refrigerant charge .................................................................................17

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GENERAL INDEX
5.2.4 Drain Piping............................................................................................18
5.2.4.1 Drain Discharging Boss.............................................................18
5.3 Refrigerant circuit ............................................................................................19
5.3.1 General notes R32 refrigerant...............................................................19
5.3.2 Refrigerant piping ..................................................................................19
5.3.3 Refrigerant charge .................................................................................21
5.3.3.1 Refrigerant charge amount......................................................21
5.3.3.2 Refrigerant charge before shipment (W0 (kg)).........................21
6. Electrical and control sengs ..................................................................................22
6.1 General check ..................................................................................................23
6.2 Electrical connecon .......................................................................................24
6.2.1 Wiring size .............................................................................................24
6.2.2 Minimum requirements of the protecon devices ..............................24
6.3 Seng of DIP switches and RSW switches......................................................25
6.3.1 Locaon of DIP switches and rotary switches.......................................25
6.3.2 Funcon of DIP switches and rotary switches ......................................26
6.3.2.1 LED indicaon...........................................................................28
6.4 Terminal board connecons............................................................................29
6.4.1 Table board 1 .........................................................................................29
7. Maintenance.............................................................................................................30
7.1 Removing the upper cover..............................................................................31
7.2 Removing the service cover ............................................................................32
8. Commissioning .........................................................................................................34
8.1 Before operaon..............................................................................................35
8.2 Preliminary check ............................................................................................35

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GENERAL INDEX
8.2.1 Checking the unit...................................................................................35
8.2.2 Electrical checking .................................................................................35
8.2.3 Checking the refrigerant circuit.............................................................36
8.3 Commissioning procedure ..............................................................................36
8.4 Test run / air purge ..........................................................................................37

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GENERAL INFORMATION
General informaon
1.1 Generalinformaon ..........................................................................................2
1.1.1 Generalnotes ..........................................................................................2
1.2 Appliedsymbols.................................................................................................2
1.3 Generalsafetynotes..........................................................................................4
1.3.1 Addionalinformaonaboutsafety .......................................................4
1.4 Importantnoce................................................................................................5
1.5 Productguide ....................................................................................................6
1.6 Productlist.........................................................................................................6

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GENERAL INFORMATION
GENERAL INFORMATION
1.1 General informaon
1.1.1 General notes
© Copyright 2023 Johnson Controls-Hitachi Air Condioning Spain, S.A.U. – All rights reserved.
No part of this publicaon may be reproduced, copied, led or transmied in any shape or form
without the permission of Johnson Controls-Hitachi Air Condioning Spain, S.A.U.
Within the policy of connuous improvement of its products, Johnson Controls-Hitachi Air
Condioning Spain, S.A.U. reserves the right to make changes at any me without prior nocaon
and without being compelled to introducing them into previously sold products. This document
may therefore have been subject to amendments during the life of the product.
Hitachi makes every eort to oer correct, up-to-date documentaon. Despite this, prinng errors
cannot be controlled by Hitachi and are not its responsibility.
As a result, some of the images or data used to illustrate this document may not refer to specic
models. No claims will be accepted based on the data, illustraons and descripons included in
this manual.
No type of modicaon must be made to the equipment without prior, wrien authorizaon from
the manufacturer.
1.2 Applied symbols
During normal heat pump system design work or unit installaon, greater aenon must be paid in
certain situaons requiring parcular care in order to avoid damage the unit, the installaon or the
building or property.
Situaons endangering the safety of those in the surrounding area or to the unit itself are clearly
indicated in this manual.
Special symbols are used to clearly idenfy these situaons.
Pay close aenon to these symbols and to the messages following them, as your safety and that
of others depends on it.
!DANGER
• The text following this symbol contains informaon and instrucons relang directly to your
safety in addion to hazards or unsafe pracces which could result in severe personal injuries
or death.
• Not taking these instrucons into account could lead to serious, very serious or even fatal
injuries to you and others in the proximies of the unit.
In the texts following the danger symbol you can also nd informaon on safety procedures during
unit installaon.

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APPLIED SYMBOLS
GENERAL INFORMATION
!CAUTION
• The text following this symbol contains informaon and instrucons relang directly to your
safety, in addion to hazards or unsafe pracces which could result in minor personal injuries or
product or property damage.
• Not taking these instrucons into account could lead to minor injuries to you and others.
• Not taking these instrucons into account could lead to unit damage.
In the texts following the cauon symbol you can also nd informaon on safety procedures during
unit installaon.
NOTE
• The text following this symbol contains informaon or instrucons that may be of use or that
requires a more thorough explanaon.
• Instrucons regarding inspecons to be made on unit parts or systems may also be included.

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GENERAL SAFETY NOTES
GENERAL INFORMATION
1.3 General safety notes
1.3.1 Addional informaon about safety
!DANGER
• DO NOT CONNECT THE POWER SUPPLY TO THE INDOOR UNIT PRIOR TO FILLING THE SPACE
HEATING CIRCUIT (AND DHW CIRCUIT IF IT WAS THE CASE) WITH WATER AND CHECKING
WATER PRESSURE AND THE TOTAL ABSENCE OF ANY WATER LEAKAGE.
• Do not pour water over the indoor unit electrical parts. If the electrical components are in
contact with water a seri ous electrical shock will take place.
• Do not touch or adjust the safety devices inside the air to water heat pump. If these devices
are touched or adjusted, a serious accident can take place.
• Do not open the service cover or access inside the air to water heat pump without
disconnecng the main power supply.
• In case of re Turn OFF the main switch, put out the re at once and contact your service
contractor.
• It must ensure that the air to water heat pump cannot op erate accidentally without water
neither with air inside hydraulic system.
!CAUTION
• Do not use any sprays such as inseccide, lacquer, hair spray or other ammable gases within
approximately one meter from the system.
• If installaon circuit breaker or the unit fuse is oen acvated, stop the system and contact your
service contractor.
• Do not make service or inspecons tasks by yourself. This work must be performed by a qualied
service person.
• This appliance must be used only by adult and capable people, having received the technical
informaon or instrucons to handle this appliance properly and safely.
• Children should be supervised to ensure that they do not play with the appliance.
• Do not let any foreign body into the water inlet and outlet piping of the air to water heat pump.

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PMEN0641 rev.0 - 05/2023
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IMPORTANT NOTICE
GENERAL INFORMATION
1.4 Important noce
• Verify, in accordance with the manuals which appear in the outdoor and indoor units, that all
the informaon required for the correct installaon of the system is included. If this is not the
case, contact your distributor.
• Hitachi pursues a policy of connuous improvement in product design and performance. The
right is therefore reserved to vary specicaons without noce.
• Hitachi cannot ancipate every possible circumstance that might involve a potenal hazard.
• This air to water heat pump has been designed for standard water heang for human beings
only. Do not use this for other purposes such as for drying clothes, heang foods or for any
other heang process (except swimming pool).
• No part of this manual may be reproduced without wrien permission.
• If you have any quesons, contact your service contractor of Hitachi.
• Check and make sure that the explanaons of each part of this manual correspond to your air to
water heat pump model.
• Refer to the models codicaon to conrm the main characteriscs of your system.
• Signal words (NOTE, DANGER and CAUTION) are used to idenfy levels of hazard seriousness.
Denions for idenfying hazard levels are provided in inial pages of this document.
• The operaon modes of these units are controlled by the unit controller.
• This manual should be considered as a permanent part of the air to water heat pump. It gives
a common descripon of and informaon for this air to water heat pump which you operate as
well as for other models.
• Keep the water temperature of the system above the freezing temperature.

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PRODUCT GUIDE
GENERAL INFORMATION
1.5 Product guide
Unit type: Outdoor unit (Split air system)
Posion-separang hyphen (xed)
Compressor power (HP): 1.5, 2, 2.5, 3
For water combinaon
Heat pump
V: Single phase unit (~ 230V 50Hz)
R: R32 refrigerant
Premium series
2: series
E: Made in Europe
—: Made in Japan
RAS - X W H V R P 2 (E)
1.6 Product list
~ 230V 50Hz
RAS-1.5WHVRP2E
RAS-2WHVRP2E
RAS-2.5WHVRP2E
RAS-3WHVRP2E

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PMEN0641 rev.0 - 05/2023
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NAME OF PARTS AND DIMENSIONAL DATA
Name of parts and dimensional data
2.1 YUTAKI Outdoor Unit- RAS-(1.5-3)WHVRP2E ...................................................8

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PMEN0641 rev.0 - 05/2023
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YUTAKI OUTDOOR UNIT- RAS-(1.5-3)WHVRP2E
NAME OF PARTS AND DIMENSIONAL DATA
2.1 YUTAKI Outdoor Unit - RAS-(1.5-3)WHVRP2E
1. Punched drain hole (30x80 long hole)
2. AachmentholeforM10anchorbolt
(2-Ucuthole)
3. Airsuconinlet
4. Punched drain hole (For drain pipe)
5. AachmentholeforM10anchorbolt
(2-Long hole)
6. Footpart
7. Airdischargeoutlet
8. Pipe cover
9. Service cove
10. Terminalboardforpowersupplyand
transmission
Terminalscrewofpowersupplywire(M5)
Terminalscrewoftransmissionwire(M4)
11. Terminalscrewofearthwire(M5)
12. Conneconofrefrigerantliquidpipe
(WitharenutforØ6.35copperpipe)
13. Conneconofrefrigerantgaspipe
(WitharenutforØ12.7copperpipe)

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ELECTRICAL DATA
Electrical data
3.1 Consideraons.................................................................................................10
3.2 Split system- YUTAKI Outdoor unit..................................................................10

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PMEN0641 rev.0 - 05/2023
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CONSIDERATIONS
ELECTRICAL DATA
3.1 Consideraons
Key words:
• U: Power supply.
• PH: Phase.
• IPT: Total input power.
• STC: Starng current: Less than maximum current.
• RNC: Running current.
• MC: Maximum current.
NOTE
• Heang condions: Inlet/outlet water temperature: 30/35 °C ; Outdoor ambient temperature
(DB/WB): 7/6 °C
• The compressor data shown in the tables below are based on a combined capacity of 100% of
the power supplied.
• The “Maximum current” shown in the above table is the maximum total unit running current at
the following condions:
»Supply voltage: 90% of the rated voltage.
»Unit capacity: 100% at maximum operang condions.
• The power supply cables must be sized to cover this maximum current value.
• Specicaons in these tables are subject to change without noce in order that Hitachi may
bring the latest innovaons to their customers.
• Please refer to the general informaon, cauons and notes regarding protecve devices (CB, ELB)
throughout the “Electrical and control sengs” chapter.
3.2 Split system - YUTAKI Outdoor unit
RAS-(1.5-3)WHVRP2E in combinaon with YUTAKI S, YUTAKI S Combi
Model Power
supply
Applicable voltage Compressor and fan motors
MC
(A)
Max
IPT
(kW)
Cooling Heang
U max
(V)
U min
(V)
RNC
(A)
IPT
(KW)
RNC
(A)
IPT
(KW)
RAS-1.5WHVRP2E
~ 230V
50Hz 253 207
6.28 1.30 3.38 0.70 10.95 2.27
RAS-2WHVRP2E 7.36 1.52 4.54 0.94 10.95 2.27
RAS-2.5WHVRP2E 9.29 1.92 6.74 1.40 14.55 3.01
RAS-3WHVRP2E 12.89 2.67 7.86 1.63 14.55 3.01

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4
WORKING RANGE
Working range
4.1 Power supply working range ...........................................................................12
4.2 Temperature working range............................................................................12

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4
POWER SUPPLY WORKING RANGE
WORKING RANGE
4.1 Power supply working range
◆Nominal power supply
• Single phase: ~ 230V 50Hz
• Three phase: 3N~ 400V 50Hz
◆Operang voltage
Between 90 and 110% of the nominal voltage.
◆Voltage imbalance for nominal power supply 3N~ 400V 50Hz
Up to 3% of each phase, measured at the main terminal of the outdoor unit.
◆Starng voltage
Always higher than 85% of the nominal voltage.
4.2 Temperature working range
For temperature working range refere to the indoor unit technical documentaon.

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5
REFRIGERANT PIPING
Refrigerant piping
5.1 General notes before performing piping work ...............................................14
5.2 PipingconneconforOutdoorUnit................................................................15
5.2.1 Outdoorunitstopvalve.........................................................................15
5.2.2 Brazingwork ..........................................................................................17
5.2.3 Refrigerantcharge .................................................................................17
5.2.4 DrainPiping............................................................................................18
5.2.4.1 DrainDischargingBoss.............................................................18
5.3 Refrigerantcircuit ............................................................................................19
5.3.1 GeneralnotesR32refrigerant...............................................................19
5.3.2 Refrigerantpiping ..................................................................................19
5.3.3 Refrigerantcharge .................................................................................21
5.3.3.1 Refrigerantchargeamount ......................................................21
5.3.3.2 Refrigerantchargebeforeshipment(W0(kg)).........................21