Hitachi UTOPIA R32 Series User manual

–
TECHNICAL
CATALOGUE
–
UTOPIA
R32 SERIES
R410A SERIES
TCGB0136 rev.1- 05/2021
MODELS
RAS-(4-6)H(V)RC2E - RAS-(4-6)H(V)RP2E
RAS-(4-6)H(V)NC2E - RAS-(4-6)H(V)NP2E
RAS-3HVRC2

Contents
TCGB0136rev.1-05/2021
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Contents
General Information
Features and benets
General data
Capacities and selection data
Acoustic characteristic curves
Working range
General dimensions
Refrigerant cycle
Piping work and refrigerant charge
Electrical wiring
Troubleshooting

General Index
TCGB0136 rev.1 - 05/2021
III
General Index
1. General Information................................................................................................... 1
1.1 General information.................................................................................................................................2
1.1.1 Introduction......................................................................................................................................................2
1.2 Applied symbols......................................................................................................................................3
1.3 Norms and Regulations...........................................................................................................................3
1.4 Product guide..........................................................................................................................................4
1.4.1 Classication of outdoor unit models...............................................................................................................4
1.4.2 Classication of indoor unit models.................................................................................................................4
1.4.3 Product line-up: Outdoor units.........................................................................................................................5
1.4.4 Outdoor unit accessory code list.....................................................................................................................6
1.4.5 Product line-up: indoor units............................................................................................................................7
1.4.6 Product line-up: KPI energy recovery unit......................................................................................................11
1.4.7 Product line-up: DX-Interface.........................................................................................................................11
1.4.8 Product line-up: Econofresh...........................................................................................................................11
1.4.9 Multi-Kits........................................................................................................................................................12
1.4.10 Individual remote controls ...........................................................................................................................12
1.4.11 Receiver kit for combination with wireless remote control switch................................................................13
1.4.12 Centralised remote controls ........................................................................................................................14
1.4.13 Building air conditioning controls.................................................................................................................14
1.4.14 Gateways for building management systems (BMS) ..................................................................................15
1.4.15 Control support devices...............................................................................................................................16
1.4.16 Control accessories.....................................................................................................................................16
2. Features and benefits.............................................................................................. 17
2.1 Features and benets............................................................................................................................18
2.1.1 Improvements of UTOPIAPrime / UTOPIA IVX Prime Series.......................................................................18
2.1.2 R32 refrigerant ..............................................................................................................................................18
2.2 Eco-Desing and Seasonal Efciency ....................................................................................................19
2.2.1 Eco-Design....................................................................................................................................................19
2.2.2 Seasonal Efciency .......................................................................................................................................19
2.2.3 Energy classes and energy label (Lot 10).....................................................................................................20
2.3 General features and benets of the UTOPIA Prime / UTOPIA IVX Prime Series................................22
2.3.1 Main features.................................................................................................................................................22
2.4 Selection benets..................................................................................................................................24
2.4.1 Wide range of UTOPIAoutdoor units............................................................................................................24
2.4.2 Wide range of indoor units combinable with UTOPIAPrime and UTOPIA IVX Prime...................................25

General Index
TCGB0136 rev.1 - 05/2021
IV
2.5 Installation benets................................................................................................................................26
2.6 Start-up benets....................................................................................................................................27
2.6.1 Automatic start-up test...................................................................................................................................27
2.6.2 Service verication ........................................................................................................................................28
2.7 Maintenance benets ............................................................................................................................29
2.7.1 Availability of maintenance tools ...................................................................................................................29
2.7.2 Simple maintenance......................................................................................................................................29
3. General data ............................................................................................................. 31
3.1 General information...............................................................................................................................32
3.2 General specications...........................................................................................................................33
3.3 Cooling and heating performance.........................................................................................................41
3.3.1 UTOPIAPrime single phase series...............................................................................................................41
3.3.2 UTOPIAIVX Prime single phase series ........................................................................................................41
3.3.3 UTOPIAPrime three phase series ................................................................................................................42
3.3.4 UTOPIAIVX Prime three phase series .........................................................................................................42
3.4 Component data....................................................................................................................................43
3.5 Electrical data........................................................................................................................................45
3.5.1 UTOPIA series...............................................................................................................................................46
4. Capacities and selection data................................................................................. 47
4.1 Combinability range...............................................................................................................................48
4.1.1 Connected number of indoor units................................................................................................................48
4.1.2 Connected capacity ratio...............................................................................................................................49
4.2 System selection procedure..................................................................................................................50
4.2.1 Selection procedure (step 1).........................................................................................................................50
4.2.2 Selection procedure (step 2).........................................................................................................................52
4.3 Maximum cooling capacity....................................................................................................................53
4.4 Maximum heating capacity....................................................................................................................55
4.5 Correction indoor fan speed factor........................................................................................................57
4.5.1 Cooling..........................................................................................................................................................57
4.5.2 Heating..........................................................................................................................................................57
4.6 Piping length correction factor (fLC, fLH)..................................................................................................57
4.7 Defrost Operation correction factor (fD).................................................................................................59
4.8 Correction ratio due to humidity (CR)....................................................................................................59
4.9 Correction factor according to altitude (fAL)............................................................................................59

General Index
TCGB0136 rev.1 - 05/2021
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5. Acoustic characteristic curves............................................................................... 61
5.1 Overall sound level................................................................................................................................62
5.2 Sound pressure curves .........................................................................................................................63
5.3 Sound power curves..............................................................................................................................65
6. Working range.......................................................................................................... 67
6.1 Working range.......................................................................................................................................68
6.1.1 Power supply.................................................................................................................................................68
6.1.2 Temperature working range...........................................................................................................................68
6.1.3 Special DSW conguration for low ambient temperature (-15ºC) - only for simultaneous operation mode
units (UTOPIA Prime)..............................................................................................................................................69
7. General dimensions................................................................................................. 71
7.1 Dimensions............................................................................................................................................72
7.1.1 RAS-3HVRC2................................................................................................................................................72
7.1.2 RAS-(4-6)H(V)(R/N)(C/P)2E .........................................................................................................................73
7.2 Service space........................................................................................................................................74
7.2.1 Basic sizes ....................................................................................................................................................74
7.2.2 RAS-3HVRC2................................................................................................................................................75
7.2.3 RAS-(4-6)H(V)(R/N)(C/P)2E .........................................................................................................................77
8. Refrigerant cycle...................................................................................................... 79
8.1 General notes........................................................................................................................................80
8.2 RAS-3HVRC2........................................................................................................................................80
8.3 RAS-(4-6)H(V)(R/N)(C/P)2E .................................................................................................................81
9. Piping work and refrigerant charge ....................................................................... 83
9.1 Refrigerant pipe selection......................................................................................................................84
9.1.1 Pipe size selection.........................................................................................................................................84
9.1.2 Multikit or distributor selection.......................................................................................................................84
9.2 Refrigerant piping range........................................................................................................................84
9.2.1 Refrigerant piping length...............................................................................................................................84
9.2.2 Piping system for header branch...................................................................................................................85
9.2.3 Maximum lenght of refrigerant piping............................................................................................................86
9.2.4 Combinations of piping size and piping length..............................................................................................88
9.2.5 Refrigerant piping size and multikit/distributor...............................................................................................88
9.3 Copper pipes, sizes and connection .....................................................................................................90
9.3.1 Copper pipes and sizes.................................................................................................................................90
9.3.2 Insulation.......................................................................................................................................................91

General Index
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9.4 Refrigerant charge amount....................................................................................................................92
9.4.1 Refrigerant charge before shipment (W0(kg))...............................................................................................92
9.4.2 Calculation method for the additional refrigerant charge...............................................................................92
9.5 Caution in case of refrigerant leakage...................................................................................................94
9.5.1 Maximum permitted concentration of hydrouorocarbon (HFC) ...................................................................94
9.5.2 Calculation of refrigerant concentration.........................................................................................................94
9.5.3 Countermeasure for R410A refrigerant leakage............................................................................................95
10. Electrical wiring ....................................................................................................... 97
10.1 General information...............................................................................................................................98
10.1.1 Electromagnetic compatibility......................................................................................................................98
10.1.2 Harmonics...................................................................................................................................................99
10.2 General verications..............................................................................................................................99
10.3 DIP and RSW switches settings............................................................................................................99
10.3.1 RAS-3HVRC2..............................................................................................................................................99
10.3.2 RAS-(4-6)H(V)(R/N)(P/C)2E .....................................................................................................................102
10.4 System wiring diagram........................................................................................................................105
10.4.1 Outdoor and indoor unit electrical wiring...................................................................................................105
10.4.2 Wire size....................................................................................................................................................106
10.5 H-LINK II system.................................................................................................................................107
10.5.1 Features....................................................................................................................................................107
10.5.2 Specications ............................................................................................................................................107
10.5.3 DIP Switch setting for 2, 3 and 4 indoor units systems.............................................................................108
10.5.4 Examples of the system of connection between H-LINK and H-LINK II units............................................110
10.5.5 Examples of H-LINK II system ...................................................................................................................111
10.6 System Control - Main concept...........................................................................................................113
10.6.1 UTOPIA Prime............................................................................................................................................113
10.6.2 UTOPIA IVX Prime.....................................................................................................................................114
10.6.3 System control comparison........................................................................................................................115
11. Troubleshooting..................................................................................................... 117
11.1 On-screen displays during abnormal operation...................................................................................118
11.2 Alarm codes ........................................................................................................................................120

1. General Information
Index
1.1 General information.................................................................................................................................2
1.1.1 Introduction......................................................................................................................................................2
1.2 Applied symbols......................................................................................................................................3
1.3 Norms and Regulations...........................................................................................................................3
1.4 Product guide..........................................................................................................................................4
1.4.1 Classication of outdoor unit models...............................................................................................................4
1.4.2 Classication of indoor unit models.................................................................................................................4
1.4.3 Product line-up: Outdoor units.........................................................................................................................5
1.4.4 Outdoor unit accessory code list.....................................................................................................................6
1.4.5 Product line-up: indoor units............................................................................................................................7
1.4.6 Product line-up: KPI energy recovery unit......................................................................................................11
1.4.7 Product line-up: DX-Interface.........................................................................................................................11
1.4.8 Product line-up: Econofresh...........................................................................................................................11
1.4.9 Multi-Kits........................................................................................................................................................12
1.4.10 Individual remote controls ...........................................................................................................................12
1.4.11 Receiver kit for combination with wireless remote control switch................................................................13
1.4.12 Centralised remote controls ........................................................................................................................14
1.4.13 Building air conditioning controls.................................................................................................................14
1.4.14 Gateways for building management systems (BMS) ..................................................................................15
1.4.15 Control support devices...............................................................................................................................16
1.4.16 Control accessories.....................................................................................................................................16
1 General Information
TCGB0136 rev.1 - 05/2021
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1

1.1 General information
© Copyright 2021 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. – All rights reserved.
No part of this publication may be reproduced, copied, led or transmitted in any shape or form without the permission of
Johnson Controls-Hitachi Air Conditioning Spain, S.A.U.
Within the policy of continuous improvement of its products, Johnson Controls-Hitachi Air Conditioning Spain, S.A.U.
reserves the right to make changes at any time without prior notication and without being compelled to introducing them
into products subsequently sold. This document may therefore have been subject to amendments during the life of the
product.
Hitachi makes every effort to offer correct, up-to-date documentation. Despite this, printing 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, illustrations and descriptions included in this manual.
No type of modication must be made to the equipment without prior, written authorization from the manufacturer.
Hitachi pursues a policy of continued improvement in design and performance of Products. The right is therefore
reserved to vary specications without notice. Hitachi cannot anticipate every possible circumstance that might involve a
potential hazard. No part of this manual may be reproduced without written permission.
1.1.1 Introduction
Hitachi UTOPIAPrime/ UTOPIA IVX Prime series is an outdoor unit series designed with the goal to cover the
requirements of the split and multisplit systems, for installations where from one indoor unit (single system) to up to 4
indoor units, are connected to the same UTOPIAoutdoor unit (depending on model).
New UTOPIAseries consists in two different outdoor unit series: UTOPIAPrime and UTOPIA IVX Prime, which compliant
with the Eco Design (ErP) and Energy Labelling (ELD) directives about seasonal energy performance:
• ErP 206/2012& ELD (626/2011) for models up to 12kW of Cooling capacity
• ErP 2016/2281 for models higher than 12kW of Cooling capacity
The Seasonal Energy Efciency Ratio (SEER) in cooling and the Seasonal Coefcient of Performance (SCOP) in
heating, show an approach values to the real energy consumption.
UTOPIAseries incorporate the Hitachi inverter technology, which makes possible to adapt automatically and without the
user operation the capacity of the unit, so the power input, to the real demand of the installation, increasing the system
efciency to unattainable levels with other technologies. All UTOPIA units are equipped with a heat pump, resulting in
an air conditioning system valid for the whole year, in which the installation of additional and specic systems are not
necessary.
Nominal capacity from 7 kW to 14 kW (cooling mode). Connectable indoor units up to 4 units (depending on model) and
total combination power from 90% up to 115% for outdoor units from 4 to 6HP, or 90% up to 100% for 3HP outdoor units.
One of the main merits of Hitachi indoor units range is the combinability and exibility of its indoor units SYSTEM FREE.
This outstanding technology makes possible to use the same indoor units with both UTOPIA and SET FREE outdoor
units, making easier the design, installation and control of the air conditioning installations.
1 General Information
General information
TCGB0136 rev.1 - 05/2021
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