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Hitachi UTOPIA R32 Series Technical Catalogue
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Hitachi UTOPIA R32 Series Technical Catalogue

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

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Summary of Contents for Hitachi UTOPIA R32 Series

  • Page 1 – TECHNICAL CATALOGUE – UTOPIA R32 SERIES R410A SERIES MODELS RAS-3HVRC2 RAS-(4-6)H(V)RC2E - RAS-(4-6)H(V)RP2E RAS-(4-6)H(V)NC2E - RAS-(4-6)H(V)NP2E TCGB0136 rev.1 - 05/2021...
  • Page 3 Contents C o n t e n t s General Information Features and benefits General data Capacities and selection data Acoustic characteristic curves Working range General dimensions Refrigerant cycle Piping work and refrigerant charge Electrical wiring Troubleshooting TCGB0136 rev.1 - 05/2021...

  • Page 5: Table Of Contents

    General Index General Index General Information ....................1 General information ..........................2 1.1.1 Introduction ..............................2 Applied symbols ............................3 Norms and Regulations ........................... 3 Product guide ............................4 1.4.1  Classification of outdoor unit models ....................... 4 1.4.2  Classification of indoor unit models ......................... 4 1.4.3 Product line-up: Outdoor units ......................... 5 1.4.4 Outdoor unit accessory code list ........................
  • Page 6 General Index 2.5  Installation benefits..........................26 2.6  Start-up benefits ............................ 27 2.6.1 Automatic start-up test ........................... 27 2.6.2  Service verification ............................28 2.7  Maintenance benefits ..........................29 2.7.1 Availability of maintenance tools ........................29 2.7.2 Simple maintenance ............................29 General data ......................31 General information ..........................32 3.2 ...
  • Page 7 General Index Acoustic characteristic curves ................61 Overall sound level ..........................62 Sound pressure curves ......................... 63 Sound power curves..........................65 Working range ......................67 Working range ............................68 6.1.1 Power supply ..............................68 6.1.2 Temperature working range ........................... 68 6.1.3 ...
  • Page 8 General Index Refrigerant charge amount........................92 9.4.1 Refrigerant charge before shipment (W (kg)) ....................92 9.4.2 Calculation method for the additional refrigerant charge ................92 Caution in case of refrigerant leakage....................94 9.5.1  Maximum permitted concentration of hydrofluorocarbon (HFC) ..............94 9.5.2 Calculation of refrigerant concentration ......................94 9.5.3 Countermeasure for R410A refrigerant leakage ....................

  • Page 9: General Information

    1 General Information G e n e r a l I n f o r m a t i o n Index General information ..........................2 1.1.1 Introduction ..............................2 Applied symbols ............................3 Norms and Regulations ........................... 3 Product guide ............................4 1.4.1 ...

  • Page 10: General Information

    1.1.1 Introduction Hitachi UTOPIA Prime/ 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 UTOPIA outdoor unit (depending on model).

  • Page 11: Applied Symbols

    Tn of CO  equivalent of fluorinated greenhouse gases contained is calculated by indicated GWP * Total Charge (in kg)  indicated in the product label and divided by 1000. Appropriate refrigerant The refrigerant used in each unit is identified on the specification label and manuals of the unit. Hitachi shall not be held  liable for any failure, trouble, malfunction or accident caused by units illegally charged with refrigerants other than the specified one.  Consequences of charging non-specified refrigerant It may cause mechanical failure, malfunction and other accidents.

  • Page 12: Product Guide

    1 General Information Product guide 1.4 Product guide 1.4.1 Classification of outdoor unit models Unit type (Outdoor unit): RAS Position-separating hyphen (fixed) Capacity (HP): 3, 4, 5, 6 H = Heat pump V = Single phase unit (1~ 230V 50Hz) - = Three phase unit (3N~ 400V 50Hz) R = R32 refrigerant N = R410A refrigerant C: Simultaneous operation mode P: Individual operation mode 2 = series 2...

  • Page 13: Product Line-Up: Outdoor Units

    1 General Information Product guide 1.4.3 Product line-up: Outdoor units  UTOPIA Prime (Simultaneous operation models) R410A 1~ 230V 50Hz 3N~ 400V 50Hz 1~ 230V 50Hz 3N~ 400V 50Hz Unit Code Unit Code Unit Code Unit Code Unit Code RAS-3HVRC2 60289185 RAS-4HVRC2E 7E303034...

  • Page 14: Outdoor Unit Accessory Code List

    Air inlet of left side ASG-SP10LE RAS-(4-6)H(V)(R/N)(C/P)2E 60291939 STAINLESS PLATE ASG-NP335FS4 (Half) 60291940 RAS-(4-6)H(V)(R/N)(C/P)2E Air outlet ASG-SP2 (Full) 60291947 ASG-SP10BES2 RAS-(4-6)H(V)(R/N)(C/P)2E Air inlet of rear side 60291943 ASG-SP10LES2 RAS-(4-6)H(V)(R/N)(C/P)2E Air inlet of left side 60291944 N O T E Hitachi has a range of accessories and remote control systems that can be used with the UTOPIA Prime and UTOPIA IVX Prime series outdoor units. Please, refer to the Controls Technical Catalogue. TCGB0136 rev.1 - 05/2021...

  • Page 15: Product Line-Up: Indoor Units

    1 General Information Product guide 1.4.5 Product line-up: indoor units N O T E • The indoor unit models and codes are the last updated at time of publication; other previous models and coming developments could be available for combination with the outdoor unit series. • Check the indoor unit compatibility (model, series, size,...) with your outdoor model name. • Check the exact classification for each unit (model, type, power and series) in “1.4.1 Classification of outdoor unit models”.  RCI and RCIM indoor units ( R32 / R410A ) RCIM ( R32 / R410A ) 4-way cassette 4-way cassette (compact) Unit Code...
  • Page 16 1 General Information Product guide  RCD and RPC indoor units ( R32 / R410A ) ( R32 / R410A ) 2-way cassette Ceiling type Unit Code Unit Code Unit Code RCD-0.8FSR (*) 60279168 RCD-1.0FSR (*) 60279169 RCD-1.5FSR (*) 60279170 RPC-1.5FSR 60279267 RCD-2.0FSR (*) 60279171 RPC-2.0FSR 60279268...
  • Page 17 1 General Information Product guide  RPI indoor units DUCTED INDOOR UNIT ( R32 / R410A ) RPIL-FSRE RPI-FSRE RPIH-FSRE Unit Code RPIL-0.4FSRE(*1) 7E426048 RPIL-0.6FSRE (*2) 7E426037 RPIL-0.8FSRE 7E426013 RPIL-1.0FSRE 7E426014 RPIL-1.5FSRE 7E426002 RPI-1.5FSRE 7E426015 RPI-2.0FSRE 7E426016 RPI-2.5FSRE 7E426017 RPI-3.0FSRE 7E426018 RPI-4.0FSRE 7E426020 RPIH-4.0FSRE...
  • Page 18 1 General Information Product guide  RPK, RPF and RPFI indoor units ( R32 / R410A ) ( R410A ) RPFI ( R410A ) Wall type Floor type Floor concealed type Unit Code Unit Code Unit Code RPK-0.4FSRM (*1) 60279204 RPK-0.4FSRHM (*1) 60279221 RPK-0.6FSRM (*2) 60279205 RPK-0.6FSRHM (*2) 60279222 RPK-0.8FSRM...

  • Page 19: Product Line-Up: Kpi Energy Recovery Unit

    1 General Information Product guide 1.4.6 Product line-up: KPI energy recovery unit Energy recovery Active (Energy Recovery+ R410A DX section) Unit Code Unit Code KPI-252E4E 70603000 KPI-502E4E 70603001 KPI-502X4E 70603201 KPI-802E4E 70603002 KPI-802X4E 70603202 KPI-1002E4E 70603003 KPI-1002X4E 70603203 KPI-1502E4E 70603004 KPI-2002E4E 70603005 1.4.7 Product line-up: DX-Interface...

  • Page 20: Multi-Kits

    1 General Information Product guide 1.4.9 Multi-Kits Name Description Code Figure E-102SN4 70524201 Branch Pipe E-162SN4 70524202 MH-84AN1 Header Branch 70522009 1.4.10 Individual remote controls Name Description Code Figure PC-ARFP1E Remote control with timer 70510003 PC-ARH1E Simplified remote control 70510004 PC-AWR Wireless remote control 60291969 TCGB0136 rev.1 - 05/2021...

  • Page 21: Receiver Kit For Combination With Wireless Remote Control Switch

    1 General Information Product guide 1.4.11 Receiver kit for combination with wireless remote control switch Receiver kit Compatible wireless remote Indoor unit application Code Figure name control on the panel PC-ALH3  RCI-FSR  PC-AWR 60291767 PC-ALHC1 RCIM-FSRE PC-AWR 70590906 PC-ALHD1  RCD-FSR PC-AWR 60292053 PC-ALHP1...

  • Page 22: Centralised Remote Controls

    1 General Information Product guide 1.4.12 Centralised remote controls Name Description Code Figure PSC-A64GT Touch screen central station 60291730 PSC-A32MN Touch screen central station mini 60291966 PSC-A64S Centralised remote control 60291479 PSC-A16RS Centralised ON/OFF control 60291484 1.4.13 Building air conditioning controls Name Description Code Figure...

  • Page 23: Gateways For Building Management Systems (Bms)

    1 General Information Product guide 1.4.14 Gateways for building management systems (BMS) Name Description Code Figure Integration with installation with intelligent control (Building HC-A16MB Management System) Gateway Interface to MODBUS 7E513210 systems (Max. 16 indoor units). Integration with installation with intelligent control (Building HC-A64MB Management System) Gateway Interface to MODBUS 7E513205 systems (Max. 64 indoor units).

  • Page 24: Control Support Devices

    1 General Information Product guide 1.4.15 Control support devices Name Description Code Figure PSC-A1T Programmable timer 60291482 PSC-6RAD H-LINK RAC Adapter 60063017 PC-A1IO Integration of external equipment into H-LINK 7E519000 PSC-5HR H-LINK Relay 60291105 THM-R2AE Remote temperature sensor (THM4) 7E299907 1.4.16 Control accessories Name Description Code Figure Wall mounted support...

  • Page 25: Features And Benefits

    2  Features and benefits F e a t u r e s a n d b e n e f i t s Index 2.1  Features and benefits..........................18 2.1.1 Improvements of UTOPIA Prime / UTOPIA IVX Prime Series............... 18 2.1.2 R32 refrigerant .............................. 18 2.2 ...

  • Page 26: Features And Benefits

    2  Features and benefits Features and benefits 2.1 Features and benefits 2.1.1 Improvements of UTOPIA Prime / UTOPIA IVX Prime Series UTOPIA Prime and UTOPIA IVX Prime series provides the following improvements to air conditioning installations: 1 Changing the compressor from scroll to advanced rotary. 2 Increased working range, in heating mode up to 24/18 °C (DB/WB). 3 Increased working range, in cooling mode for the OU simultaneous operation mode up to -15 °C. 4 External static pressure increases up to 30Pa. 5 Use of R32 refrigerant. 6 Individual control with R32 refrigerant. 7 Improvements in pipeline limitations. Fewer piping restrictions than in previous series. 8 Better efficiency than the previous series. 2.1.2 R32 refrigerant R32 refrigerant has many benefits over R410A refrigerant. Although both are “fluorinated greenhouse gases covered by the Kyoto protocol”, R32 has a much lower global warming ...

  • Page 27: Eco-Desing And Seasonal Efficiency

    ‘CO2 emission’ and ‘energy consumption’ during the whole life of the product (from design to the end life, including  transport). Eco-Design analyses highlighted the fact that the major environmental impact is related to the ”usage period” of the  above products. For this reason, ErP fixes minimum performance levels to allow products coming in the European  market. Simultaneously, ErP fixes technical communication contents to end user through a label (data on performance,  sound level) in order to help them to make their choice. ErP is applied to all air conditioning and heating equipment, whatever the type (air/air, air/water, water/water, boilers…),  the capacity, the usage (heating, cooling, SHW) is, through different “Lots” and at different application frameworks. The  first one, coming into application on 1rst January 2013, was “Lot 10”. It does concern all air conditioning systems (air/air),  with a capacity lower than 12kw, operating in heating and/or cooling mode. These regulations include air conditioning products, which are a key source of energy consumption in buildings, and  require all manufacturers to calculate energy usage in a more realistic way, moving from nominal to seasonal, creating a  more accurate calculation and representation of products in the market. Key issues in terms of compliance are: (a) Fixing a minimum level of performance in heating and cooling mode (b) Fixing a maximum sound power level for indoor and outdoor units (c) Fixing communication of above characteristics to end users through labelling Hitachi has always engineered the most environmentally-friendly heating and cooling products from its factories, and is  proud to launch a complete range of fully ErP-compliant air conditioning products. Where product ranges and models  fall outside the scope of the ErP directive (<12kW), there are a series of enhancements for RAC; in particular UTOPIA  Series, which already are market leaders in Japan’s Annual Performance Factor (APF) for seasonal efficiency. 2.2.2 Seasonal Efficiency Seasonal Efficiency has been developed in the Eco Design Directive (EU’s Energy Related Products Directive), which  specifies the minimum requirements that manufacturers must integrate into their energy using products. Target relies on a seasonal performance of the equipment called SCOP (heating mode) and SEER (cooling mode) for an  average European climate. This performance value will replace historical nominal values of COP and EER. The new calculation uses several rating temperatures for cooling and heating, and integrates partial capacity operation  in the calculation. Since most systems operate most of the time under a partial load, the new methodology gives a better  indication of expected real-life performance. The new seasonal efficiency calculation will also take into consideration the  power consumed by devices in auxiliary modes like standby mode. TCGB0136 rev.1 - 05/2021...

  • Page 28: Energy Classes And Energy Label (Lot 10)

    Seasonal Energy Efficiency Ratio (SEER) in cooling and the Seasonal Coefficient of Performance (SCOP) in heating give a more accurate estimation of the real performance of the equipment during the whole period of usage, all  while considering: •  Several points of measure (In cooling mode: an outside temperature of 20ºC, 25ºC, 30ºC and 35ºC; in heating mode:  an outside temperature of +12ºC, +7ºC, +2ºC, and -7ºC. •  Different compressor speeds (full load and partial load), auxiliary consumption (crankcase heaters, thermostat off  mode, OFF mode…). •  Conditions of temperature (number of hours per outdoor temperature) for an identified climate (average climate for  ErP compliance) •  Building heat load (called Pdesign) Hitachi, in compliance with the Eco Design Directive, has developed the new outdoor units: new UTOPIA series, whose  high efficiency level (including SEER and SCOP values) is properly informed to our customers to allow for an easy  selection. New UTOPIA series offer high seasonal efficiencies, as well as complete flexibility, with all outdoor units from both ranges  being fully compatible with the System Free range of indoor units. Hitachi’s UTOPIA technology has all the benefits of  VRF, including individual control of each indoor unit with an increased number of indoor unit combinations in addition to  delivering excellent part-load efficiency. With cooling capacities and heating capacities from 2HP to 12HP, a maximum of 4 indoor units are connectable  to a single outdoor unit, with individual control and efficiencies achieved as high as A++/A+ (depending on model/ combinations). 2.2.3 Energy classes and energy label (Lot 10) The energy efficiency classes from A+++ to D are introduced based on SCOP and SEER values: The scale for energy ...
  • Page 29 2  Features and benefits Eco-Desing and Seasonal Efficiency Energy efficiency label for air conditioners up to 12 kW is supplied together with Hitachi UTOPIA units in order to facilitate  our customers their decision when purchasing. Below there is a description of each information that will be found in the  energy label. Manufacturer  ++++ Unit name ++++  ++++ ++++ SEER (Seasonal Energy Efficiency) value in cooling mode  SCOP (Seasonal Coefficient of performance) value in heating   mode   Energy efficiency classes SEER in cooling mode    Energy efficiency classes SCOP in heating mode SEER SCOP  Energy efficiency class in cooling of the unit    Energy efficiency class in heating of the unit (the indication for   the unit model is made for all three climate zones)  Nominal capacity in cooling mode  ...

  • Page 30: General Features And Benefits Of The Utopia Prime / Utopia Ivx Prime Series

    2  Features and benefits General features and benefits of the UTOPIA Prime / UTOPIA IVX Prime Series 2.3 General features and benefits of the UTOPIA Prime / UTOPIA IVX Prime Series 1 Connected capacity ratio of Indoor Units from 90% up to 115% (from 90% up to 100% for 3HP). 2 Connection of up to 4 Indoor Units (depending on the models). 3 Compliance with 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. 4 Minimum connectable capacity of Indoor Units as low as 0.8HP. 2.3.1 Main features The number of the indoor units connectable to one outdoor units is: Maximum number of connectable indoor units N O T E Please check chapter 4.1 Combinability range.
  • Page 31 2  Features and benefits General features and benefits of the UTOPIA Prime / UTOPIA IVX Prime Series  Simultaneous operation on several indoor units for more homogeneous climatization in large open spaces With UTOPIA Prime  is possible for several indoor units connected to a same outdoor unit to operate with the same  operation parameters and setting temperature, as it was a single indoor unit. All indoor units are at the same Thermo-ON or Thermo-OFF status.  Simultaneous operation improves comfort versus monosplit PAC applications by providing a better air homogeneity  due to the bigger number of indoor units (up to 4), which means a less centralized air flow. Compared versus another  alternatives as multisplits provides longer piping distances needed for tertiary applications; compared to mini VRF  systems it is a more cost efficient solution.  Example for common room (Simultaneous operation). Thermo-OFF Thermo-OFF Setting...

  • Page 32: Selection Benefits

    2  Features and benefits Selection benefits  Basic combinations (Example of 2 indoor units system) UTOPIA IVX Prime UTOPIA Prime Operating line Operating line Operating line Operating line Remote control line Remote control line Remote control line Remote control line and operating cable and operating cable for remote control for remote control Tset1...

  • Page 33: Wide Range Of Indoor Units Combinable With Utopia Prime And Utopia Ivx Prime

    2  Features and benefits Selection benefits 2.4.2 Wide range of indoor units combinable with UTOPIA Prime and UTOPIA IVX Prime Hitachi indoor units have a wide range of capacities from 0.8 to 6.0 HP. SYSTEM FREE Capacity (HP) Model RCI-FSR 4-way cassette RCIM-FSR 4-way cassette (compact) RCD-FSR 2-way cassette RPC-FSR Ceiling type RPIL-FSRE Indoor ducted unit (slim)

  • Page 34: Installation Benefits

    2  Features and benefits Installation benefits 2.5 Installation benefits  H-Link II bus Easy connection The communication bus is formed by a pair of small-diameter cores with no specific polarity. Given that no multi-way  communication cables are used, the installation is simple, fast and effective. The connections cannot be confused. The two-core non-polarity communication bus provides significant savings in terms of materials and installation, as the  same cable is used for all the units and is quickly and simply connected directly to them.  Long distance The total length of the communication bus between all the units can reach 1000 m. If the communication line must be  longer (e.g. to expand the air conditioning system or to manage the units from a unified station in the building), the total  distance can be extended to 5000 m by using the accessories available. Auto-configuration of system units The air conditioning system control systems are auto-configuring. They recognise the type of unit they are connected to,  along with the type of indoor unit and its capacity. The installation is started quickly and efficiently. It is also possible to configure all units manually to adjust the installation in line with personalised parameters. Up to 160 units connected together in a single H-LINK II bus line It is possible to connect up to 160 indoor units and up to 64 refrigerant ...

  • Page 35: Start-Up Benefits

    2  Features and benefits Start-up benefits No need for remote control relay wiring in UTOPIA Prime In the case of UTOPIA Prime systems comprising several  indoor units (up to 4 indoor units), indoor units can be  controlled from a single remote controller, without the need  to link them up with dedicated remote control relay wiring. A: Service cable. B: Dedicated cable for remote control relay, not required  when units are set to simultaneous operation. The indoor units must be H-LINK II-compatible models. 2.6 Start-up benefits 2.6.1 Automatic start-up test The installation is started up automatically, therefore considerably reducing the time required for the process. There are the following types of start-up: •  Test run and identification of the units forming the system. •  Test run from the remote control. •  Test run from the outdoor unit.  Test run and identification of the system units The test run can be carried out from either the rotating DIP switches on the outdoor unit or from the remote control for the ...

  • Page 36: Service Verification

    2  Features and benefits Start-up benefits 2.6.2 Service verification  System operation control The working order of the system is continuously monitored through the control system. All operating parameters that the  system uses to manage the outdoor and indoor units are continuously supervised.  Assisted-management air conditioning system The air conditioning system can be conveniently managed using the  Hitachi Service Tools assisted-management software. This software allows for a laptop, for example, to be connected to  the air conditioning system via an interface connected to the H-LINK  II bus. Through different menus, the software effectively manages  all of the systems connected and obtains data for optimised system  performance. All of the data obtained using Hitachi Service Tools is collected in different formats and monitored in several ways. The  software user can configure the processing of the data to monitor the parameters of most interest in each installation and  allows reporting of the logged data, exporting each of its screens in different ways. The data reports can be used to continuously check the correct working order of the system. Any deviation in the ranges  of foreseen values is immediately detected. Additionally, Service Tools adds the option to control the units remotely, helping the user to evolve its test without moving  away of his computer and it is possible to configure its optional functions from Service Tools without the need to perform  further setup on each unit. Service Tools can be updated online using an internet connection. If properly configured and registered, Service Tools  will check for new updates and advise the user to download them. TCGB0136 rev.1 - 05/2021...

  • Page 37: Maintenance Benefits

    2.7.2 Simple maintenance  Optimised design to simplify maintenance The components of the indoor units of the entire range have a strong, long-lasting design bearing in mind the demanding  requirements of the market insofar as maintenance cost reduction. The interior structure of the units and the layout of the internal parts make any removal and assembly operations easier  where technical work is required for some reason.  Minimum or zero maintenance All units and components of the UTOPIA range of outdoor units have been designed for simple, easy maintenance  operations.  Absence of replacement consumable Parts subject to inspection are practically inexistent throughout the range. On some specific models, only the regular  long-term replacement of the air and deodorising filters is required. Consumable or replacement parts are not required.  Loyal to the Hitachi philosophy The outdoor units of the UTOPIA range have been designed in line with Hitachi philosophy to guarantee the highest  reliability and reduce maintenance work to an essential minimum. TCGB0136 rev.1 - 05/2021...

  • Page 39: General Data

    3 General data G e n e r a l d a t a Index General information ..........................32 3.2 General specifications ........................... 33 Cooling and heating performance ......................41 3.3.1 UTOPIA Prime single phase series ....................... 41 3.3.2 UTOPIA IVX Prime single phase series ......................41 3.3.3 UTOPIA Prime three phase series ........................

  • Page 40: General Information

      RPI-FSN5E (*)   RPIM-FSN4E(DU) (*) RPK-FSN(H)4M (*)     RPF-FSN2E RPFI-FSN2E     KPI-E4E   KPI-X4E EXV-E2   N O T E For older OU series, contact Hitachi CSC. • (*): The minimum capacity of indoor units that can be used in combination with R32 and R410A UTOPIA Prime and UTOPIA IVX • Prime series is 0.8HP. TCGB0136 rev.1 - 05/2021...

  • Page 41: General Specifications

    3 General data General specifications 3.2 General specifications  UTOPIA Prime with R32 refrigerant for single phase units OUTDOOR UNITS RAS-3HVRC2 RAS-4HVRC2E RAS-5HVRC2E RAS-6HVRC2E Power supply 1~ 230V 50Hz 1~ 230V 50Hz 1~ 230V 50Hz 1~ 230V 50Hz Nominal cooling capacity 10.0 11.9 14.0...
  • Page 42 3 General data General specifications  UTOPIA Prime with R32 refrigerant for three phase units OUTDOOR UNITS RAS-4HRC2E RAS-5HRC2E RAS-6HRC2E Power supply 3N~ 400V 50Hz 3N~ 400V 50Hz 3N~ 400V 50Hz Nominal cooling capacity 10.0 11.9 14.0 Nominal heating capacity 11.2 14.0 16.0 Minimum - Maximum connectable indoor units...
  • Page 43 3 General data General specifications  UTOPIA Prime with R410A refrigerant for single phase units OUTDOOR UNITS RAS-4HVNC2E RAS-5HVNC2E RAS-6HVNC2E Power supply 1~ 230V 50Hz 1~ 230V 50Hz 1~ 230V 50Hz Nominal cooling capacity 10.0 11.9 14.0 Nominal heating capacity 11.2 14.0 16.0 Minimum - Maximum connectable indoor units...
  • Page 44 3 General data General specifications  UTOPIA Prime with R410A refrigerant for three phase units OUTDOOR UNITS RAS-4HNC2E RAS-5HNC2E RAS-6HNC2E Power supply 3N~ 400V 50Hz 3N~ 400V 50Hz 3N~ 400V 50Hz Nominal cooling capacity 10.0 11.9 14.0 Nominal heating capacity 11.2 14.0 16.0 Minimum - Maximum connectable indoor units...
  • Page 45 3 General data General specifications  UTOPIA IVX Prime with R32 refrigerant for single phase units OUTDOOR UNITS RAS-4HVRP2E RAS-5HVRP2E RAS-6HVRP2E Power supply 1~ 230V 50Hz 1~ 230V 50Hz 1~ 230V 50Hz Nominal cooling capacity 10.0 12.5 14.0 Nominal heating capacity 11.2 14.0 16.0...
  • Page 46 3 General data General specifications  UTOPIA IVX Prime with R32 refrigerant for three phase units OUTDOOR UNITS RAS-4HRP2E RAS-5HRP2E RAS-6HRP2E Power supply 3N~ 400V 50Hz 3N~ 400V 50Hz 3N~ 400V 50Hz Nominal cooling capacity 10.0 12.5 14.0 Nominal heating capacity 11.2 14.0 16.0...
  • Page 47 3 General data General specifications  UTOPIA IVX Prime with R410A refrigerant for single phase units OUTDOOR UNITS RAS-4HVNP2E RAS-5HVNP2E RAS-6HVNP2E Power supply 1~ 230V 50Hz 1~ 230V 50Hz 1~ 230V 50Hz Nominal cooling capacity 10.0 12.5 14.0 Nominal heating capacity 11.2 14.0 16.0...
  • Page 48 3 General data General specifications  UTOPIA IVX Prime with R410A refrigerant for three phase units OUTDOOR UNITS RAS-4HNP2E RAS-5HNP2E RAS-6HNP2E Power supply 3N~ 400V 50Hz 3N~ 400V 50Hz 3N~ 400V 50Hz Nominal cooling capacity 10.0 12.5 14.0 Nominal heating capacity 11.2 14.0 16.0...

  • Page 49: Cooling And Heating Performance

    3 General data Cooling and heating performance 3.3 Cooling and heating performance 3.3.1 UTOPIA Prime single phase series System combination Cooling Heating Energy Energy SEER Design SCOP Design Class Class Refrigerant Outdoor unit Indoor unit (35ºC) (-10ºC) RCI-3.0FSR 7.33 3.93 7.10 4.20 4.11...

  • Page 50: Utopia Prime Three Phase Series

    3 General data Cooling and heating performance 3.3.3 UTOPIA Prime three phase series System combination Cooling Heating Energy Energy SEER Design SCOP Design Class Class Refrigerant Outdoor unit Indoor unit (35ºC) (-10ºC) RCI-4.0FSR 6.62 3.90 10.00 4.36 4.23 8.70 RPIH-4.0FSRE 6.84 3.73 10.00...

  • Page 51: Component Data

    3 General data Component data 3.4 Component data  RAS-(3-6)H(V)(R/N)C2(E) MODEL RAS-3HVRC2 RAS-4H(V)(R/N)C2E RAS-5H(V)(R/N)C2E RAS-6H(V)(R/N)C2E Type Multi-pass cross-finned tube Pipe material Copper Outer diameter Rows Number of tubes in the heat exchanger Heat exchanger Fin material Aluminium Fin pitch 1.45 Maximum operating 4.15 pressure Total front area...
  • Page 52 3 General data Component data  RAS-(4-6)H(V)(R/N)P2E MODEL RAS-4H(V)(R/N)P2E RAS-5H(V)(R/N)P2E RAS-6H(V)(R/N)P2E Type Multi-pass cross-finned tube Pipe material Copper Outer diameter Rows Number of tubes in the heat exchanger Heat exchanger Fin material Aluminium Fin pitch Maximum operating 4.15 pressure Total front area 1.11 Number of heat exchanger per unit Fan type...

  • Page 53: Electrical Data

    3 General data Electrical data 3.5 Electrical data Keywords: • U: Power supply. • PH: Phase. • f: Frequency. • STC: Starting current: Less than maximum current. • IPT: Total input power. • RNC: Running current. • MC: Maximum current. • CB: Circuit breaker • ELB: Earth leakage breaker (N° of poles/A/mA) C A U T I O N...

  • Page 54: Utopia Series

    RAS-6HNC2E 4.91 3.64 RAS-4HRC2E 2.56 2.65 RAS-5HRC2E 3.38 3.52 RAS-6HRC2E 4.38 3.64 4/40/30 RAS-4HRP2E 2.51 2.60 RAS-5HRP2E 3.42 3.39 RAS-6HRP2E 4.38 3.64 RAS-4HNP2E 2.81 2.56 RAS-5HNP2E 3.83 3.39 RAS-6HNP2E 4.91 3.64 N O T E Specifications in these tables are subject to change without notice in order that Hitachi may bring the latest innovations to their customers. TCGB0136 rev.1 - 05/2021...

  • Page 55: Capacities And Selection Data

    4 Capacities and selection data C a p a c i t i e s a n d s e l e c t i o n d a t a Index Combinability range..........................48 4.1.1 Connected number of indoor units ........................ 48 4.1.2 Connected capacity ratio ..........................

  • Page 56: Combinability Range

    4 Capacities and selection data Combinability range 4.1 Combinability range 4.1.1 Connected number of indoor units Range of operation capacity control from 90 to 100% for 1 or 2 indoor units (RAS-3HVRC2) and 90 up to 115% for 1 to 4 indoor units (RAS-(4-6)H(V)(R/N)(C/P)2E).

  • Page 57: Connected Capacity Ratio

    4 Capacities and selection data Combinability range 4.1.2 Connected capacity ratio Outdoor unit model 3 HP 4 HP 5 HP 6 HP Maximum number of connected indoor units Connected capacity ratio of indoor unit % 90-100% (1 or 2 90-115% (1 to 4 units) (number of connected Indoor Units) units) Minimum capacity of indoor units (HP)

  • Page 58: System Selection Procedure

    4 Capacities and selection data System selection procedure 4.2 System selection procedure This combinability allows the outdoor unit to be smaller capacity when compared with other air conditioning systems, in case of the total combination horsepower, but considering that maximum load demands can not be simultaneous. A: morning peak heat load in the eastern area.
  • Page 59 4 Capacities and selection data System selection procedure 3 Pre-select the outdoor units that covers the installation’s cooling load requirements If the required loads will not be simultaneous (for example: the maximum required loads of room 1 (east zone) occurs at the morning and the maximum required loads of room 2 (west zone) occurs at the afternoon.), select the outdoor unit that cover the maximum simultaneous load on the installation and check that the total combination horsepower must not be higher than the limits, using the following:...

  • Page 60: Selection Procedure (Step 2)

    4 Capacities and selection data System selection procedure 9 Sensible heat capacity (SHC) Once the calculation of the indoor units cooling capacity has been completed, the sensible heat capacity can be calculated using the following formula: SHC = Q x SHF SHC: Sensible heat capacity (kW).

  • Page 61: Maximum Cooling Capacity

    4 Capacities and selection data Maximum cooling capacity 4.3 Maximum cooling capacity Tables are based on the following conditions: The tables are based on High speed of indoor fan. To calculate the cooling capacity of medium or low speed of indoor fan, multiply cooling capacity of high speed by Correction Curve Factor (Chapter “4.5 Correction indoor fan speed factor”).
  • Page 62 4 Capacities and selection data Maximum cooling capacity  R410A single phase All temperatures in ºC. Indoor air inlet temperature WB (ºC) / (DB (ºC)) Outdoor air inlet 15/(21) 19/(27) 23/(32) Outdoor unit temperature (DB) 10.6 3.42 3.10 11.8 3.49 3.38 13.1 3.57...

  • Page 63: Maximum Heating Capacity

    4 Capacities and selection data Maximum heating capacity 4.4 Maximum heating capacity Tables are based on the following conditions: The tables are based on High speed of indoor fan. To calculate the cooling capacity of medium or low speed of indoor fan, multiply cooling capacity of high speed by Correction Curve Factor (Chapter “4.5 Correction indoor fan speed factor”).
  • Page 64 4 Capacities and selection data Maximum heating capacity  R410A refrigerant single and three phase All temperatures in ºC. Indoor air inlet temperature WB (ºC) / (DB (ºC)) Outdoor Outdoor air inlet unit temperature (DB) 8.20 3.56 8.09 3.57 7.88 3.62 7.66 3.65...

  • Page 65: Correction Indoor Fan Speed Factor

    4 Capacities and selection data Correction indoor fan speed factor 4.5 Correction indoor fan speed factor 4.5.1 Cooling The tables are based on High speed of indoor fan. To calculate the cooling capacity of medium or low speed of indoor fan, multiply cooling capacity of high speed by correction indoor fan speed factor.
  • Page 66 4 Capacities and selection data Piping length correction factor (fLC, fLH) Cooling RAS-3HVRC2 RAS-4H(V)(R/N)(C/P)2E EL (m) 40 45 RAS-5H(V)(R/N)(C/P)2E RAS-6H(V)(R/N)(C/P)2E EL (m) EL (m) 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 10 15 20 25...

  • Page 67: Defrost Operation Correction Factor (F )

    4 Capacities and selection data Defrost Operation correction factor (fD) 4.7 Defrost Operation correction factor (f The heating capacity does not include operation during frost or defrosting. When this type of operation is taken in account, the heating capacity must be corrected according to the following equation: Correction heating capacity = Correction factor x heating capacity Outdoor inlet air temperature (ºC DB)

  • Page 69: Acoustic Characteristic Curves

    5 Acoustic characteristic curves A c o u s t i c c h a r a c t e r i s t i c c u r v e s Index Overall sound level ..........................62 Sound pressure curves ......................... 63 Sound power curves..........................

  • Page 70: Overall Sound Level

    5 Acoustic characteristic curves Overall sound level 5.1 Overall sound level The overall sound level has been measured in an anechoic chamber so reflected sound should be taken into consideration when installing the unit. Test Conditions: 1 Distance of the unit from the measuring point: 1 meter from the unit’s front surface; 1.5 meter from floor level: Overall sound level measuring position 2 Power supply: a.

  • Page 71: Sound Pressure Curves

    5 Acoustic characteristic curves Sound pressure curves 5.2 Sound pressure curves RAS-3HVRC2 RAS-4H(V)(R/N)C2E (Hi) Heating (Hi) Heating (Hi) Cooling (Hi) Cooling Night Shift mode Night Shift mode Approximate threshold of hearing Approximate for continuous noise threshold of hearing for continuous noise Central frequency (cycle per second) Central frequency (cycle per second) Cooling/Heating/Night mode: 54/52/48 dB(A)
  • Page 72 5 Acoustic characteristic curves Sound pressure curves RAS-4H(V)(R/N)P2E RAS-5H(V)(R/N)P2E (Hi) Heating (Hi) Heating (Hi) Cooling (Hi) Cooling Night Shift mode Night Shift mode Approximate threshold of hearing Approximate for continuous noise threshold of hearing for continuous noise Central frequency (cycle per second) Central frequency (cycle per second) Cooling/Heating/Night mode: 54/54/51 dB(A) Cooling/Heating/Night mode: 56/56/51 dB(A)

  • Page 73: Sound Power Curves

    5 Acoustic characteristic curves Sound power curves 5.3 Sound power curves RAS-3HVRC2 RAS-4H(V)(R/N)C2E Approximate threshold of hearing Approximate threshold of hearing for continuous noise for continuous noise Frequency (Hz) Frequency (Hz) Sound power level: Global 67 dB(A) Sound power level: Global 70 dB(A) RAS-5H(V)(R/N)C2E RAS-6H(V)(R/N)C2E Approximate...
  • Page 74 5 Acoustic characteristic curves Sound power curves RAS-4H(V)(R/N)P2E RAS-5H(V)(R/N)P2E Approximate Approximate threshold of hearing threshold of hearing for continuous noise for continuous noise Frequency (Hz) Frequency (Hz) Sound power level: Global 70 dB(A) Sound power level: Global 72 dB(A) RAS-6H(V)(R/N)P2E Approximate threshold of hearing for continuous noise...

  • Page 75: Working Range

    6 Working range W o r k i n g r a n g e Index Working range ............................68 6.1.1 Power supply ..............................68 6.1.2 Temperature working range ........................... 68 6.1.3  Special DSW configuration for low ambient temperature (-15ºC) - only for simultaneous operation mode  units (UTOPIA Prime) .............................. 69 TCGB0136 rev.1 - 05/2021...

  • Page 76: Working Range

    6 Working range Working range 6.1 Working range 6.1.1 Power supply Nominal power supply: Single phase:  1~ 230V 50Hz    /    Three phase: 3N~ 400V 50Hz Operating 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. Starting voltage Always higher than 85% of the nominal voltage. Relative Humidity limit Lower that 80% 6.1.2 Temperature working range The new UTOPIA series has been designed for the following temperatures. Cooling mode Heating mode Minimum...

  • Page 77: Special Dsw Configuration For Low Ambient Temperature (-15ºc) - Only For Simultaneous Operation Mode Units (Utopia Prime)

    6 Working range Working range Heating mode Working range Indoor side air inlet temperature 6.1.3 Special DSW configuration for low ambient temperature (-15ºC) - only for simultaneous operation mode units (UTOPIA Prime) The outdoor ambient temperature limit is extended down from -5ºC to -15ºC under this configuration. Only when Mandatory setting (OU) Cooling mode operation DSW2 PIN 3 = ON N O T E Capacity and efficiency can vary depending on ambient conditions, working settings, control and protections, etc.

  • Page 79: General Dimensions

    7 General dimensions G e n e r a l d i m e n s i o n s Index Dimensions............................72 7.1.1 RAS-3HVRC2 ..............................72 7.1.2 RAS-(4-6)H(V)(R/N)(C/P)2E ......................... 73 Service space ............................74 7.2.1 Basic sizes ..............................74 7.2.2 RAS-3HVRC2 ..............................

  • Page 80: Dimensions

    7 General dimensions Dimensions 7.1 Dimensions 7.1.1 RAS-3HVRC2 Dimension on table Model RAS-3HVRC2 26.5 127.5 15.88 9.52 Units in mm. Number Description Remarks Punched drain hole 30x80 long hole Attachment hole for M10 anchor bolt 2-U cut hole Air suction inlet —...

  • Page 81: Ras-(4-6)H(V)(R/N)(C/P)2E

    7 General dimensions Dimensions 7.1.2 RAS-(4-6)H(V)(R/N)(C/P)2E Viewed from A Units in mm. Number Description Remarks Air inlet — Air outlet — Holes for power supply wiring — Holes for control line wiring — Gas piping connection — Liquid piping connection —...

  • Page 82: Service Space

    7 General dimensions Service space 7.2 Service space 7.2.1 Basic sizes  RAS-3HVRC2 ≥ ≥  RAS-(4-6)H(V)(R/N)(C/P)2E Units in mm. N O T E Please refer to the Service Manual for specific information. TCGB0136 rev.1 - 05/2021...

  • Page 83: Ras-3Hvrc2

    7 General dimensions Service space 7.2.2 RAS-3HVRC2 a) In case of front side and either of the sides are open (single unit) b) In case that surrounding wall exist (single unit) 1000 c) In case that upper side obstacles exist (single unit) ≤...
  • Page 84 7 General dimensions Service space g) Horizontal (multiple units) ≥ 250 ≥ 2000 0 < L ≤ 1/2 H A ≥ 100 ≥ 250 ≥ 400 1/2 H < L ≤ H A ≥ 200 ≥ 1000 Do not stack more than two units in height. - Close gap (*) to avoid recirculating discharge air flow. Follow the instructions below to install on the rooftop or a location without surrounding buildings, where strong wind is expected...

  • Page 85: Ras-(4-6)H(V)(R/N)(C/P)2E

    7 General dimensions Service space 7.2.3 RAS-(4-6)H(V)(R/N)(C/P)2E (Unit: mm) Blocked in Inlet Side Upper Side Open Single Installation Multiple Installation (Two units or more) Front Front Side Front Side Front Side Side Upper Side Blocked Single Installation Multiple Installation (Two units or more) Outlet Side Blocked Upper Side Open Single Installation...
  • Page 86 7 General dimensions Service space Right and Left Blocked Upper Side Open Upper Side Blocked Single Installation Multi-Row and Multiple Installations Mount the airflow guide and provide sufficient space on both right and When using airflow guide (AG-335A, optional), check that left sides.

  • Page 87: Refrigerant Cycle

    8 Refrigerant cycle R e f r i g e r a n t c y c l e Index General notes ............................80 RAS-3HVRC2............................80 RAS-(4-6)H(V)(R/N)(C/P)2E ......................... 81 TCGB0136 rev.1 - 05/2021...

  • Page 88: General Notes

    8 Refrigerant cycle General notes 8.1 General notes Mark Part name Gas line refrigerant piping connection Liquid line refrigerant piping connection Outdoor unit 8.2 RAS-3HVRC2 Nº Part name Compressor Air side heat exchanger Accumulator Ø6.35 Refrigerant strainer Distributor Silencer Ø6.35 Ø6.35 Ø4.76 Ø9.52...

  • Page 89: Ras-(4-6)H(V)(R/N)(C/P)2E

    8 Refrigerant cycle RAS-(4-6)H(V)(R/N)(C/P)2E 8.3 RAS-(4-6)H(V)(R/N)(C/P)2E Nº Part name Compressor Air side heat exchanger Accumulator Micro-computer controlled expansion valve 4-way valve Solenoid valve for gas bypass dØ9.53 dØ9.53 Strainer Distributor Check joint dØ9.53 High pressure switch for aØ19.05 protection Pressure sensor (Hight pressure bØ15.88 bØ15.88 control)

  • Page 91: Piping Work And Refrigerant Charge

    9 Piping work and refrigerant charge Piping work and refrigerant charge Index Refrigerant pipe selection........................84 9.1.1 Pipe size selection ............................84 9.1.2 Multikit or distributor selection ........................84 Refrigerant piping range ........................84 9.2.1 Refrigerant piping length ..........................84 9.2.2 Piping system for header branch ........................

  • Page 92: Refrigerant Pipe Selection

    9 Piping work and refrigerant charge Refrigerant pipe selection 9.1 Refrigerant pipe selection 9.1.1 Pipe size selection Select the pipe size in line with the following instructions: 1 Between the outdoor unit and the branch pipe (multikit): select the same pipe connection size as for the outdoor unit. 2 Between the branch pipe (multikit) and the indoor unit: select the same pipe connection size as for the indoor unit.

  • Page 93: Piping System For Header Branch

    9 Piping work and refrigerant charge Refrigerant piping range 9.2.2 Piping system for header branch 1 indoor unit system (OU from 3 to 6 HP) 2 indoor units system (OU from 3 to 6 HP) 3 indoor units system (OU from 4 to 6 HP) 4 indoor units system (OU from 4 to 6 HP) diagrams are shown as an example TCGB0136 rev.1 - 05/2021...

  • Page 94: Maximum Lenght Of Refrigerant Piping

    9 Piping work and refrigerant charge Refrigerant piping range 9.2.3 Maximum lenght of refrigerant piping Outdoor Unit 3 HP 4 HP 5 HP 6 HP Maximum piping length between Actual length (L) the outdoor unit and the farthest Equivalent length (EL) indoor unit 2 units (A+B+C) Total piping length...
  • Page 95 9 Piping work and refrigerant charge Refrigerant piping range  Maximum height difference (clarification) ≤30m ≤ ≤ ≤ ≤ 20m ( 6m) TCGB0136 rev.1 - 05/2021...

  • Page 96: Combinations Of Piping Size And Piping Length

    9 Piping work and refrigerant charge Refrigerant piping range N O T E All pictures are as example. Branch and headers are not showed as real sizes or real picture, for the installation of this components follow the technical documentation. 9.2.4 Combinations of piping size and piping length Liquid Ø6.35 Ø9.52 Ø12.70 Ø15.88 Ø9.52 Ø12.70 Ø15.88 Ø19.05 Ø12.70 Ø15.88 Ø19.05 Ø22.20 Ø25.40 Ø15.88 Ø19.05 Ø22.20 Ø25.40 Ø28.58 Ø22.20 Ø25.40 Ø28.58 3 HP (1) (2) 4 - 5 - 6 HP...
  • Page 97 9 Piping work and refrigerant charge Refrigerant piping range 2 indoor units system (mm) Pipe Size (A) Outdoor Unit HP Branch pipe Liquid 3 - 6 Ø15.88 Ø9.52 E-102SN4 (mm) Pipe Size (B, C) Indoor unit capacity Liquid ≤ 1.5 HP Ø12.70 Ø6.35 1.8/2.0HP Ø15.88...

  • Page 98: Copper Pipes, Sizes And Connection

    N O T E Recomended capacity ratio for 4 indoor units system: Capacity indoor unit 1+2 / Capacity 1+2+3+4 < 60% Capacity indoor unit 3+4 / Capacity 1+2+3+4 < 60% If the capacity ratio of branch of indoor units 1 and 2 is bigger than 60 % of total capacity of the system or capacity ratio of branch of indoor unit 3 and 4 is bigger than 60 % of total capacity of the system, please contact with your Hitachi Dealer or Hitachi Customer Service Department. 9.3 Copper pipes, sizes and connection 9.3.1 Copper pipes and sizes 1 Prepare locally-supplied copper pipes. 2 Select the pipe size of a suitable thickness and material. Use the table below to select the required piping.

  • Page 99: Insulation

    9 Piping work and refrigerant charge Copper pipes, sizes and connection N O T E • Do not use saws, grindstone or other tools which might create copper dust. • When cutting pipes, secure the part to be soldered as shown in the Service Manual. • Strictly follow national or local regulations regarding occupational health and safety. • Wear appropriate means of protection during cutting or brazing operations and installation (gloves, eye protection, etc). N O T E • A system with no moisture or oil contamination will give maximum performance and life-cycle as compared with a poorly prepared system. Take particular care to ensure that all copper piping is clean and dry internally. • To ensure this, blow oxygen free nitrogen through the pipes. C A U T I O N • Cap the end of the pipe when the pipe is to be inserted through a hole.

  • Page 100: Refrigerant Charge Amount

    •  Record the additional refrigerant quantity in order to facilitate maintenance and servicing activities. C A U T I O N • When charging refrigerant, measure the amount precisely. Overloading or underloading of refrigerant may cause compressor problems. If the actual piping length is less than 5 m consult your dealer. Appropriate refrigerant • The refrigerant used in each unit is identified on the specification label and manuals of the unit. Hitachi shall not be held liable for any failure, trouble, malfunction or accident caused by units illegally charged with refrigerants other than the specified one. • Consequences of charging non-specified refrigerant • It may cause mechanical failure, malfunction and other accidents. It may cause operational failure of protection and safety devices of air conditioners. It may also cause lubrication failure of the sliding part of the compressor due to deterioration of refrigerant oil.
  • Page 101 9 Piping work and refrigerant charge Refrigerant charge amount C A U T I O N Do not exceed the allowed maximum additional charge.  Step 2: Charging work Charge refrigerant into the system according to the instructions in the Service Manual.  Step 3: Total refrigerant charge of the system (W (kg)) The total refrigerant charge of this system is calculated by the following formula: System example (W...

  • Page 102: Caution In Case Of Refrigerant Leakage

    9 Piping work and refrigerant charge Caution in case of refrigerant leakage 9.5 Caution in case of refrigerant leakage D A N G E R • Fitters and the designers of the installations must strictly observe local and national legislation, and local codes regarding safety requirements in the event of refrigerant leaks.

  • Page 103: Countermeasure For R410A Refrigerant Leakage

    9 Piping work and refrigerant charge Caution in case of refrigerant leakage = (m */(2.5*LFL^ * h (5/4) Installation restrictions for indoor units using R32 refrigerant • A : Minimum installation area of an Indoor unit for a given refrigerant charge m (kg) and considering the installation height h • h : Installation height of the bottom side of the indoor...

  • Page 105: Electrical Wiring

    10 Electrical wiring 1 0 . E l e c t r i c a l w i r i n g Index 10.1 General information ..........................98 10.1.1 Electromagnetic compatibility ........................98 10.1.2 Harmonics ..............................99 10.2 General verifications..........................99 10.3 DIP and RSW switches settings ......................

  • Page 106: General Information

    10 Electrical wiring General information 10.1 General information D A N G E R • Do not connect or adjust any wiring or connections unless the main power switch is OFF. Check and test to ensure that if there is more than one source of power supply, all are turned OFF. • Use an earth leakage breaker with medium sensitivity, and an activation speed of 0.1 sec or less. If this is not fitted, there is a risk of electric shock and/or fire. • Install an earth leakage breaker, fuse or circuit breaker of the specific capacity for each outdoor unit power line. Not fitting it may cause an electric shock or fire. • Check that the earth wire is securely connected, tagged and locked in accordance with national and local codes. • Never connect the earth cable to the refrigerant pipes. The gas in the pipes could cause a fire. • Do not connect the earth cable to the lighting arrest system. The electrical potential of earth would increase abnormally. C A U T I O N • Before any work to the electrical wiring or regular inspections, switch off the mains power supply of the indoor and outdoor units. Wait three minutes before starting installation or maintenance work. • Make sure that the interior and exterior fans have come to a complete standstill before starting work on the electrical wiring or regular inspections.

  • Page 107: Harmonics

    10 Electrical wiring General verifications 10.1.2 Harmonics Harmonics situation of each model regarding EN 61000-3-2 and EN 61000-3-12 is as follows: Ssc “xx” MODELS SITUATION REGARDING EN 61000-3-2 and EN 61000-3-12 Ssc “xx” MODEL (KVA) RAS-3HVRC2 Equipment complying with EN 61000-3-2 (professional use) RAS-(4-6)H(R/N)(C/P)2E Equipment complying with EN 61000-3-12 RAS-(4-6)HV(R/N)(C/P)2E...
  • Page 108 10 Electrical wiring DIP and RSW switches settings  DSW301: Test run mode Setting before shipment Cooling Heating Forced stop of compressor  DSW302: Piping Length Setting (Setting is required) Setting before shipment Pipe length (<5m) Pipe length (≥30m)  DSW1: For test run When set pin number 1 to ON, the electric current detection is cancelled.
  • Page 109 10 Electrical wiring DIP and RSW switches settings  DSW4 / RSW1: Refrigerant cycle number setting (Setting is required) Setting for the tens digit Setting position Set by inserting slotted screwdriver into the groove (setting for the last digit)  DSW5: Transmission setting of end terminal resistance Factory setting Cancellation...

  • Page 110: Ras-(4-6)H(V)(R/N)(P/C)2E

    10 Electrical wiring DIP and RSW switches settings  DSW6: No setting is required (do not change) Factory setting  DSW7: No setting is required (do not change) Factory setting 10.3.2 RAS-(4-6)H(V)(R/N)(P/C)2E  Quantity and Position of DIP Switches RAS-(4-6)HV(R/N)(C/P)2E (PCB2) RAS-(4-6)H(R/N)(C/P)2E (PCB1) Display Display...
  • Page 111 10 Electrical wiring DIP and RSW switches settings  DSW2: Optional function setting Setting before shipment Pipe length (≤5m) Pipe length setting should be performed as follows according to the on-site pipe length. Pipe length (≥30m) Control to support existing pipes or when using Ø19,05 gas pipe (soft- annealed), switch ON DSW2 pin 4 in the outdoor unit PCB...
  • Page 112 10 Electrical wiring DIP and RSW switches settings  DSW5: Transmission setting of end terminal resistance Factory setting Cancellation In the case that the outdoor units quantity in the same H-LINK is 2 or more, set No. 1 pin of DSW5 at “OFF” side from the 2nd refrigerant group outdoor unit.

  • Page 113: System Wiring Diagram

    10 Electrical wiring System wiring diagram  DSW6: No setting is required (do not change) RAS-(4-6)H(V)(R/N)C2E RAS-(4-6)H(V)(R/N)P2E Factory setting  DSW7: No setting is required (do not change) RAS-(4-6)H(V)(R/N)C2E RAS-(4-6)H(V)(R/N)P2E Factory setting 10.4 System wiring diagram 10.4.1 Outdoor and indoor unit electrical wiring • Connect the electrical wires between the indoor unit and the outdoor unit as show in the figure.

  • Page 114: Wire Size

    10 Electrical wiring System wiring diagram N O T E Take care with the connection of the operating line. Incorrect connection may cause a failure of the PCB. Power source from the outdoor unit to the indoor unit Independent power source of outdoor unit and indoor unit Number 0 System Number 0 System L1 L2 L3 L1 L2 L3 Outdoor unit Outdoor unit L1 L2 L3...

  • Page 115: H-Link Ii System

    10 Electrical wiring H-LINK II system 10.5 H-LINK II system The H-LINK II is the wiring connection system between units. The H-LINK II wiring system only needs: • Two transmission wires connecting each indoor and outdoor unit for a total of 64 refrigerant cycles. • Connection wiring for all indoor and outdoor units in series.

  • Page 116: Dip Switch Setting For 2, 3 And 4 Indoor Units Systems

    10 Electrical wiring H-LINK II system 10.5.3 DIP Switch setting for 2, 3 and 4 indoor units systems Dip switch of indoor and outdoor unit PCB - H-LINK II The DIP switches of all the indoor and outdoor units have to be set and the impedance of the transmission circuit adapted.
  • Page 117 10 Electrical wiring H-LINK II system Unit Name of DIP switch Ref. Setting before the Shipment Function For setting the refrigerant cycle address of DSW4 the outdoor unit. Set the DSW4 and RSW1 to Refrigerant cycle RSW1 overlap the setting of other outdoor units in the same H-LINK system.

  • Page 118: Examples Of The System Of Connection Between H-Link And H-Link Ii Units

    10 Electrical wiring H-LINK II system 10.5.4 Examples of the system of connection between H-LINK and H-LINK II units In the case of mixed systems with H-LINK and H-LINK II, set the H-LINK units in the first 16 position of the system, as in the following example where 42 systems are connected, 16 with indoor FSN1E units and 26 with indoor FSN4E units. A: Refrigerant cycle. B: Outdoor unit.

  • Page 119: Examples Of H-Link Ii System

    10 Electrical wiring H-LINK II system 10.5.5 Examples of H-LINK II system Two cases: 1. Using H-LINK II system for air conditioning systems without a central control device (Neither Centralised remote controls nor Building air controls) • Line connection with all units A: Outdoor units.
  • Page 120 10 Electrical wiring H-LINK II system 2. Using the H-LINK II system for air conditioning systems with a central control device (Either Centralised remote controls or Building air conditioning control) • If the central control device is used when carrying out electrical wiring, it can be connected at any point of the H-LINK II wiring.

  • Page 121: System Control - Main Concept

    10 Electrical wiring System Control - Main concept 10.6 System Control - Main concept 10.6.1 UTOPIA Prime When the UTOPIA Prime system is in Thermo-ON, the system will switch to Thermo-OFF as soon as there is an indoor unit that has no demand. The system will return to Thermo-ON when all units are in demand. ...

  • Page 122: Utopia Ivx Prime

    10 Electrical wiring System Control - Main concept 10.6.2 UTOPIA IVX Prime The UTOPIA IVX Prime system remains in Thermo-ON as long as there is a load demand for one indoor unit. If the system is in Thermo-OFF, it will switch to Thermo-ON as soon as the first unit has load demand.  Individual Operation (only available with UTOPIA IVX Prime) In the individual operation control mode, each of the indoor units can have it’s independent temperature setting and Thermo-ON/OFF status (as well as optional functions), even connected to a same outdoor unit.

  • Page 123: System Control Comparison

    10 Electrical wiring System Control - Main concept 10.6.3 System control comparison Control Method Individual control Group control Simultaneous control by one Remote Control by one Remote Control Switch by only one Remote Control Operation Method Switch per each indoor unit per each group Switch ON/OFF...

  • Page 125: Troubleshooting

    11 Troubleshooting 11 . T r o u b l e s h o o t i n g Index 11.1 On-screen displays during abnormal operation................... 118 11.2 Alarm codes ............................120 TCGB0136 rev.1 - 05/2021...

  • Page 126: On-Screen Displays During Abnormal Operation

    E: If there are various indoor units connected, the above mentioned 01-02 information is shown for each one of them. Alarm Code: Write down the indications and contact your Hitachi service supplier. MODEL : b .02 • Power supply failure ALM RST ADDR All displays disappear.
  • Page 127 11 Troubleshooting On-screen displays during abnormal operation  PC-ARFP1E Troubleshooting help menu PC-ARFP1E remote controller have a Troubleshooting function in Help Menu. Make sure that the troubleshooting is read carefully before requesting for repairs. Select “Troubleshooting” from the help menu and press “OK”.

  • Page 128: Alarm Codes

    11 Troubleshooting Alarm codes 11.2 Alarm codes Code Category Content of Abnormality Leading Cause Activation of protection device (Float Activation of float switch (High water level in drain pan, Indoor unit switch (*)) abnormality of drain pipe, float switch, or drain pan) Activation of PSH (pipe clogging, excessive refrigerant, inert Activation of protection device (High gas mixing) or activation of High temperature compressor Outdoor unit pressure cut or High compressor thermostat (shortage of refrigerant or system refrigerant...
  • Page 129 11 Troubleshooting Alarm codes Code Category Content of Abnormality Leading Cause Incorrect capacity setting of outdoor unit Incorrect capacity setting of outdoor unit and indoor unit, and indoor unit excessive or insufficient indoor unit total capacity code Incorrect setting of other indoor unit Problem with a different Indoor Unit in the same refrigerant number (RPK series only) cycle;...
  • Page 130 11 Troubleshooting Alarm codes Code Category Content of Abnormality Leading Cause Incorrect setting of unit model code Incorrect setting of indoor unit model Incorrect setting of unit and refrigerant The setting number of the indoor units is over 64 or the cycle number indoor unit address not correct Wrong combination of indoor unit and...
  • Page 132 ISO 14001 of JACO, Japan for its Environmental Management accordance with the standard. JQA-1084 EC97J1107 Hitachi participates in the Eurovent Certification Programme; the certified data of certified models are listed in the Eurovent Certification Online Directory (www.eurovent-certification.com). Johnson Controls-Hitachi Air Conditioning Spain, S.A.U.

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