Page 1 – INSTALLATION & OPERATION MANUAL – SYSTEM INFORMATION FOR HITACHI PACKAGE PRODUCTS PMML0553 rev.2 - 03/2022...
Page 3 Hitachi, que não pode ser responsabilizada por estes erros eventuais. Dansk Specifikationerne i denne vejledning kan ændres uden varsel, for at Hitachi kan bringe de nyeste innovationer ud til kunderne. På trods af alle anstrengelser for at sikre at alle specifikationerne er korrekte, har Hitachi ikke kontrol over trykfejl, og Hitachi kan ikke holdes ansvarlig herfor. Nederlands De specificaties in deze handleiding kunnen worden gewijzigd zonder verdere kennisgeving zodat Hitachi zijn klanten ...
Page 4 AT T E N T I O N This product shall not be mixed with general house waste at the end of its life and it shall be retired according to the appropriated local or national regulations in a environmentally correct way. Due to the refrigerant, oil and other components contained in Air Conditioner, its dismantling must be done by a professional installer according to the applicable regulations. Contact to the corresponding authorities for more information. AT E N C I Ó N Éste producto no se debe eliminar con la basura doméstica al final de su vida útil y se debe desechar de manera respetuosa con el medio ambiente de acuerdo con los reglamentos locales o nacionales aplicables. Debido al refrigerante, el aceite y otros componentes contenidos en el sistema de aire acondicionado, su desmontaje debe realizarlo un instalador profesional de acuerdo con la normativa aplicable. Para obtener más información, póngase en contacto con las autoridades competentes. A C H T U N G Dass Ihr Produkt am Ende seiner Betriebsdauer nicht in den allgemeinen Hausmüll geworfen werden darf, sondern entsprechend den geltenden örtlichen und nationalen Bestimmungen auf umweltfreundliche Weise entsorgt werden muss. Aufgrund des Kältemittels, des Öls und anderer in der Klimaanlage enthaltener Komponenten muss die Demontage von einem Fachmann entsprechend den geltenden Vorschriften durchgeführt werden. Für weitere Informationen setzen Sie sich bitte mit den entsprechenden Behörden in Verbindung. A D V E R T I S S E M E N T Ne doit pas être mélangé aux ordures ménagères ordinaires à la fin de sa vie utile et qu’il doit être éliminé conformément à la ...
Page 5 Important note: Please check the type of air conditioning system based on model name codification and related abbreviations which are used in documentation. This MODEL CODIFICATION document only covers the combinations of Hitachi indoor units with Hitachi outdoor units. Nota importante: Por favor, compruebe el tipo de sistema de aire acondicionado según la codificación de nombres de modelo y las abreviaturas relacionadas que ...
Page 6 English Original version Español Versión traducida Deutsch Übersetzte Version Français Version traduite Italiano Versione tradotta Português Versão traduzidal Dansk Oversat version Vertaalde versie Nederlands Svenska Översatt version ΕΛΛΗΝΙΚΑ Μεταφρασμένη έκδοση 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. 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 ingle- sa y las versiones traducidas, prevalecerá la versión inglesa. Die englische Fassung ist das Original, und die Fassungen in anderen Sprachen werden aus dem Englischen übersetzt. Sollten die englische und die übersetzten Fassungen voneinander abweichen, so hat die englische Fassung Vorrang. La version anglaise est la version originale; les autres langues sont traduites de l’anglais. En cas de divergence entre les versions anglaise et tra- duite, la version anglaise prévaudra. 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 tradot- te, fa fede la versione inglese. 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. Den engelske udgave er originalen, og udgaverne på andre sprog er oversat fra engelsk. Hvis der forekommer uoverensstemmelser mellem den engelske og den oversatte sprogudgave, vil den engelske udgave være gældende. De Engelse versie is de originele; andere talen zijn vertaald uit het Engels. In geval van verschillen tussen de Engelse versie en de vertaalde ver- sies, heeft de Engelse versie voorrang. Den engelska versionen är originalet, och versionerna på andra språk är från engelska översättningar. I händelse av bristande överensstämmelse mellan den engelska och den översatta versionerna, skall den engelska versionen vara giltig. Η αγγλική έκδοση είναι το πρωτότυπο και οι εκδόσεις σε άλλες γλώσσες μεταφράζονται από τα αγγλικά. Σε περίπτωση που διαπιστωθούν διαφορές ...
Page 7 1 GENERAL INFORMATION ......................8 2 SAFETY ............................8 Applied symbols ..........................9 3 PRODUCT GUIDE ........................10 Product line-up: indoor units ......................10 3.1.1 RCI and RCIM indoor units ........................10 3.1.2 RCD and RPC indoor units ........................11 3.1.3 RPI indoor units ............................. 12 3.1.4 RPK, RPF and RPFI indoor units ......................
Page 8 4.1.10 RPI-(8.0/10.0)FSN3E(-f) ........................35 4.1.11 RPI-(16.0/20.0)FSN3PE(-f) ......................... 36 4.1.12 RPK-(0.4-4.0)FSR(H)M ........................37 4.1.13 RPF-(1.0-2.5)FSN2E ........................... 38 4.1.14 RPFI-(1.0-2.5)FSN2E .......................... 39 Outdoor units ............................40 4.2.1 RAS-3HVRC2 ............................40 4.2.2 RAS-(4-6)H(V)(R/N)(C/P)2E ......................... 41 4.2.3 RAS-(4-6)(X)(V)NP1E ........................... 42 4.2.4 RAS-(8-10)XHNPE / RAS-(8-10)HNCE ....................43 4.2.5 RAS-12HNC ............................
Page 9 Outdoor units: SET FREE FS(X)N(S/P)E(1) ..................77 7.5.1 Standard type - RAS-(8-24)FSNSE1 ....................77 7.5.2 Standard type - RAS-(8-24)FSXNSE(1) ....................81 7.5.3 High efficiency type - RAS-(5-18)FSNPE1 .................... 85 7.5.4 High efficiency type - RAS-(5-18)FSXNPE(1) ..................88 7.6 CH-Box .............................91 7.6.1 CH-AP160SSX, CH-AP280SSX ......................91 7.6.2 CH-AP04MSSX ............................. 91 7.6.3 CH-AP08MSSX .............................
Page 10 9.1.4 Combinations of piping size and piping length ..................132 9.1.5 Refrigerant piping size and Multi-Kit/distributor ................... 133 UTOPIA CENTRIFUGAL VRF series .....................135 9.2.1 Refrigerant piping length ........................135 9.2.2 Piping system (Header branch installation) ..................135 9.2.3 Piping system (Line branch installation) ....................137 9.2.4 Combinations of piping size and piping length ..................
Page 11 10.6 SET FREE RAS-(5-96)FSXN(S/P)E ....................191 10.6.1 Installation position of the optional drainage kit DBS-TP10A ............192 11 ELECTRICAL WIRING ......................193 11.1 Settings of DIP switches .........................194 11.1.1 Indoor units ............................194 11.1.2 Setting of DIP switches for outdoor unit RAS-(4-6)HV(R/N)(C/P)2E ..........198 11.1.3 Setting of DIP switches for outdoor unit RAS-(4-10)XH(V)NP(1)E and RAS-(8-10)HNCE ....
Page 12 17 CHARGING WORK ......................... 234 17.1 All units except SET FREE FS(X)NSE(1) / FS(X)NPE(1) Series ...........234 17.2 For SET FREE FS(X)NSE(1) / FS(X)NPE(1) Series ..............235 17.3 UTOPIA charging work example ....................237 17.4 SET FREE Mini heat recovery system layout example ..............237 17.5 SET FREE heat pump system layout example ................238 17.6 SET FREE heat recovery system layout example ................238 18 REFRIGERANT PUMP DOWN ....................239 18.1 UTOPIA refrigerant pump down example ..................239 18.2 SET FREE heat recovery refrigerant pump down example ............240 19 H-LINK II SYSTEM ........................
Page 13 23.4 Snow protection hood ........................259 23.4.1 Air discharge hood ..........................259 23.4.2 Rear suction hood ..........................261 23.4.3 Left suction hood ..........................263 23.4.4 Assembly of snow protection hood ....................265 23.5 Drain Heater ...........................267 23.5.1 Accessories packed with drain pan heater ..................267 PMML0553 rev.2 - 03/2022...
Page 14 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. No type of modification must be made to the equipment without prior, written authorisation from the manufacturer. Hitachi pursues a policy of continuing improvement in design and performance of products. The right is therefore reserved to vary specifications without notice. 2 SAFETY Following Regulation EU No. 517/2014 on Certain Fluorinated Greenhouse gases, it is mandatory to fill in the label attached to the ...
Page 15 SAFETY 2.1 APPLIED SYMBOLS During normal air conditioning system design work or unit installation, greater attention must be paid in certain situations requiring particular care in order to avoid injuries and damage to the unit, the installation, the building or to those in the surrounding area. These situations will be clearly indicated in this manual.
Page 16 PRODUCT GUIDE 3 PRODUCT GUIDE Check, depending on the name of the model, the type of air conditioning system fitted, the abbreviated code and reference in this installation and operation manual. This Installation and Operation Manual only refers to the line-up units listed in this chapter. Check, in accordance with the Instruction Manual included with the outdoor and indoor units, that all the information necessary for the correct installation of the system is included.
Page 17 PRODUCT GUIDE 3.1.2 RCD and RPC indoor units 2-way cassette Ceiling type R32 / R410A Unit RCD-0.8FSR (*) RCD-1.0FSR (*) RCD-1.5FSR (*) RPC-1.5FSR RCD-2.0FSR (*) RPC-2.0FSR RCD-2.5FSR (*) RPC-2.5FSR RCD-3.0FSR (*) RPC-3.0FSR RCD-4.0FSR (*) RPC-4.0FSR RCD-5.0FSR (*) RPC-5.0FSR RCD-6.0FSR (*) RPC-6.0FSR Panel Panel P-AP90DNA P-AP160DNA N O T E •...
Page 18 PRODUCT GUIDE 3.1.3 RPI indoor units DUCTED INDOOR UNIT RPIL-FSRE RPI-FSRE RPIH-FSRE R32 / R410A Unit RPIL-0.4FSRE(*1) RPIL-0.6FSRE (*2) RPIL-0.8FSRE RPIL-1.0FSRE RPIL-1.5FSRE RPI-1.5FSRE RPI-2.0FSRE RPI-2.5FSRE RPI-3.0FSRE RPI-4.0FSRE RPIH-4.0FSRE RPI-5.0FSRE RPIH-5.0FSRE RPI-6.0FSRE RPIH-6.0FSRE DUCTED INDOOR UNIT R410A Unit RPI-8.0FSN3E (*3) RPI-8.0FSN3E-f (*3) RPI-10.0FSN3E (*3) RPI-10.0FSN3E-f (*3) RPI-16.0FSN3PE (*4) RPI-16.0FSN3PE-f (*4) RPI-20.0FSN3PE (*4)
Page 19 PRODUCT GUIDE DUCTED INDOOR UNIT for ECONOFRESH ASSEMBLY R410A Unit RPI-4.0FSN6E-EF RPI-5.0FSN6E-EF RPI-6.0FSN6E-EF 3.1.4 RPK, RPF and RPFI indoor units RPFI Wall type Floor type Floor concealed type R32/R410A Unit R410A Unit RPK-0.4FSRM (*1) RPK-0.4FSRHM (*1) RPK-0.6FSRM (*2) RPK-0.6FSRHM (*2) RPK-0.8FSRM RPK-0.8FSRHM RPK-1.0FSRM RPK-1.0FSRHM RPF-1.0FSN2E RPFI-1.0FSN2E RPK-1.5FSRM...
Page 20 PRODUCT GUIDE 3.2 PRODUCT LINE-UP: OUTDOOR UNITS 3.2.1 UTOPIA IVX X series 1~ 230V 50Hz 3N~ 400V 50Hz Unit Unit RAS-4XHVNP1E RAS-4XHNP1E RAS-5XHVNP1E RAS-5XHNP1E RAS-6XHVNP1E RAS-6XHNP1E RAS-8XHNPE RAS-10XHNPE N O T E RAS-XH(V)NP1E series must be used only in combination with Dx-Interface series 2 and only in 1-to-1 combination. 3.2.2 UTOPIA series 1~ 230V 50Hz 3N~ 400V 50Hz...
Page 21 PRODUCT GUIDE 3.2.3 UTOPIA IVX series 3N~ 400V 50Hz Unit Unit RAS-8HNCE RAS-10HNCE RAS-12HNC 3.2.4 UTOPIA RASC series 3N~ 400V 50Hz Unit Unit RASC-4HNPE RASC-5HNPE RASC-6HNPE RASC-8HNPE RASC-10HNPE 3.2.5 SET FREE Mini series 1~ 230V 50Hz 3N~ 400V 50Hz Unit Unit Unit RAS-4FSVNME...
Page 22 PRODUCT GUIDE 3.2.6 SET FREE Standard FS(X)NSE(1) series 3N~ 400V 50Hz Unit Unit Unit RAS-8FS(X)NSE(1) RAS-10FS(X)NSE(1) RAS-12FS(X)NSE(1) RAS-14FS(X)NSE(1) RAS-16FS(X)NSE(1) RAS-18FS(X)NSE(1) RAS-20FS(X)NSE(1) RAS-22FS(X)NSE(1) RAS-24FS(X)NSE(1) 3.2.6.1 Combination of outdoor units FSXNSE The power range of the RAS-(8-96)FSXNSE outdoor units is obtained by applying one unit (RAS-(8-24)FSXNSE) or by the combination of two, three or four outdoor units (RAS-(26-96)FSXNSE), depending on the instructions in the following tables.
Page 23 PRODUCT GUIDE Combinations of base units only for Heat Pump system (*) Model RAS-56FSXNSE RAS-58FSXNSE RAS-60FSXNSE RAS-62FSXNSE RAS-64FSXNSE RAS-24FSXNSE RAS-22FSXNSE RAS-24FSXNSE RAS-24FSXNSE RAS-24FSXNSE Combination RAS-18FSXNSE RAS-18FSXNSE RAS-18FSXNSE RAS-24FSXNSE RAS-22FSXNSE RAS-14FSXNSE RAS-18FSXNSE RAS-18FSXNSE RAS-14FSXNSE RAS-18FSXNSE Model RAS-66FSXNSE RAS-68FSXNSE RAS-70FSXNSE RAS-72FSXNSE RAS-74FSXNSE RAS-24FSXNSE RAS-24FSXNSE RAS-24FSXNSE...
Page 24 PRODUCT GUIDE 3.2.6.2 Combination of outdoor units FS(X)NSE1 The power range of the RAS-(8-96)FS(X)NSE1 outdoor units is obtained by applying one unit (RAS-(8-24)FS(X)NSE1) or by the combination of two, three or four outdoor units (RAS-(26-96)FS(X)NSE1), depending on the instructions in the following tables. Base units ...
Page 25 PRODUCT GUIDE Model RAS-86FSNSE1 RAS-88FSNSE1 RAS-90FSNSE1 RAS-92FSNSE1 RAS-94FSNSE1 RAS-24FSNSE1 RAS-24FSNSE1 RAS-24FSNSE1 RAS-24FSNSE1 RAS-24FSNSE1 RAS-24FSNSE1 RAS-24FSNSE1 RAS-24FSNSE1 RAS-24FSNSE1 RAS-24FSNSE1 Combination RAS-24FSNSE1 RAS-24FSNSE1 RAS-24FSNSE1 RAS-22FSNSE1 RAS-24FSNSE1 RAS-14FSNSE1 RAS-16FSNSE1 RAS-18FSNSE1 RAS-22FSNSE1 RAS-22FSNSE1 Model RAS-96FSNSE1 RAS-24FSNSE1 RAS-24FSNSE1 Combination RAS-24FSNSE1 RAS-24FSNSE1 C A U T I O N Only the combinations in the table are allowed, not being possible to mix heat pump system (2 pipes) and heat recovery system (3 pipes) in the same combination. It is not possible to mix standard and high efficiency units either.
Page 26 PRODUCT GUIDE 3.2.7 SET FREE High Efficiency FS(X)NPE(1) series 3N~ 400V 50Hz Unit Unit Unit RAS-5FS(X)NPE(1) RAS-6FS(X)NPE(1) RAS-8FS(X)NPE(1) RAS-10FS(X)NPE(1) RAS-12FS(X)NPE(1) RAS-14FS(X)NPE(1) RAS-16FS(X)NPE(1) RAS-18FS(X)NPE(1) 3.2.7.1 Combination of outdoor units FSXNPE The power range of the RAS-(5-72)FSXNPE outdoor units is obtained by applying one unit (RAS-(5-18)FSXNPE) or by the combination of two, three or four outdoor units (RAS-(20-72)FSXNPE), depending on the instructions in the following tables.
Page 27 PRODUCT GUIDE Model RAS-50FSXNPE RAS-52FSXNPE RAS-54FSXNPE RAS-18FSXNPE RAS-18FSXNPE RAS-18FSXNPE Combination RAS-18FSXNPE RAS-18FSXNPE RAS-18FSXNPE RAS-14FSXNPE RAS-16FSXNPE RAS-18FSXNPE Combinations of base units only for Heat Pump system (*) Model RAS-56FSXNPE RAS-58FSXNPE RAS-60FSXNPE RAS-62FSXNPE RAS-64FSXNPE RAS-18FSXNPE RAS-18FSXNPE RAS-16FSXNPE RAS-16FSXNPE RAS-16FSXNPE RAS-14FSXNPE RAS-14FSXNPE RAS-16FSXNPE RAS-16FSXNPE RAS-16FSXNPE Combination...
Page 28 PRODUCT GUIDE 3.2.7.2 Combination of outdoor units FS(X)NPE1 The power range of the RAS-(5-72)FS(X)NPE1 outdoor units is obtained by applying one unit (RAS-(5-18)FS(X)NPE1) or by the combination of two, three or four outdoor units (RAS-(20-72)FS(X)NPE1), depending on the instructions in the following tables. Base units ...
Page 29 PRODUCT GUIDE 3.3 CLASSIFICATION OF INDOOR UNITS MODEL The following information is only for reference. Indoor Unit information are not included in this technical document. Unit type (indoor unit): RCI, RCIM, RCD, RPC, RPIL, RPI, RPIH, RPK, RPF, RPFI Position-separating hyphen (fixed) Capacity (HP):0.4, 0.6, 0.8, 1.0, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0, 8.0, 10.0, 16.0, 20.0 FS : SYSTEM FREE R : R32 refrigerant / R410A refrigerant...
Page 30 PRODUCT GUIDE 3.5 CLASSIFICATION OF SET FREE OUTDOOR UNIT MODELS AND CH-BOX MODULES 3.5.1 SET FREE Mini series Unit type (outdoor unit): RAS Position-separating hyphen (fixed) System capacity (HP): (4-12) SET FREE series V : Single phase unit (1~ 230V 50Hz) - : Three phase unit (3N~ 400V 50Hz) X : Heat Pump system (2 pipes) and Heat Recovery system (3 pipes) - : Heat Pump system (2 pipes) only N: R410A refrigerant...
Page 31 PRODUCT GUIDE 3.5.4 CH-Box Single Type of unit: CH (Cooling/Heating Changeover unit) Position-separating hyphen (fixed) Refrigerant type: AP: R410A Maximum connectable indoor unit capacity (HP) 160: 6.0 HP or less (Max. 16 kW) 280: 6.1 HP - 10.0 HP (Max. 28 kW) Applicable System SSX: for Heat Recovery System (3 pipes system) – (160/280) Multiple Type of unit: CH (Cooling/Heating Changeover unit) Position-separating hyphen (fixed) Refrigerant type AP: R410A...
Page 32 NAME OF PARTS AND GENERAL DIMENSIONS 4 NAME OF PARTS AND GENERAL DIMENSIONS 4.1 INDOOR UNITS 4.1.1 RCI-(1.0-6.0)FSR Item Part Name Fan Motor Heat Exchanger Distributor Strainer Micro-Computer Control Expansion Valve Electrical box Refrigerant Gas Pipe Connection Refrigerant Liquid Pipe Connection Drain Pipe Connection Drain Discharge Mechanism Float Switch Drain Pan Rubber Plug for Drain...
Page 33 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.2 RCIM-(0.4-2.5)FSRE Internal figure of A Number Part name Number Part name Drain discharge mechanism Fan motor (DC) Float switch Heat exchanger Drain pan Distributor Rubber plug Strainer Air panel: P-AP56NAM (Optional) Micro-Computer control expansion valve Air inlet grille Electrical control box Air filter Refrigerant gas pipe connection (with Øa flare nut) Air outlet Refrigerant liquid pipe connection (with Øb flare nut)
Page 34 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.3 RCD-(0.8-3.0)FSR Viewed from P 1100 Number Part name Number Part name Drain Discharge Mechanism Fan Motor Float Switch Heat Exchanger Drain Pan Distributor Rubber Plug for Drain Strainer Air Panel: P-AP90DNA (sold separately) Micro-Computer Control Expansion Valve Air Inlet Flat Grille Electrical Control Box...
Page 35 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.4 RCD-(4.0-6.0)FSR Viewed from P 1660 Number Part name Number Part name Drain Discharge Mechanism Fan Motor Float Switch Heat Exchanger Drain Pan Distributor Rubber Plug for Drain Strainer Air Panel: P-AP160DNA (sold separately) Micro-Computer Control Expansion Valve Air Inlet Flat Grille Electrical Control Box Air Filter...
Page 36 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.5 RPC-(1.5-6.0)FSR >ABS< >ABS< 17A22761 17A22761 Number Part name Number Part name Refrigerant liquid pipe connection Fan motor Drain pipe connection Heat exchanger Auto louver motor Distributor Drain pan Strainer Air inlet grille Micro-Computer control expansion valve Air filter Electrical control box Air outlet Refrigerant gas pipe connection...
Page 37 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.6 RPIL-(0.4-1.5)FSRE Part name Fan casing Centrifugal fan Fan motor Heat exchanger Header Expansion valve Air filter Refrigerant liquid pipe connection Refrigerant gas pipe connection Electrical control box Air inlet Air outlet Drain pump Drain pipe connection 4.1.6.1 RPIL-(0.4-1.5)FSRE Dimensions Drain piping Dimension (mm) Air outlet (mm)
Page 38 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.7 RPI-(1.5/2.0)FSRE Part name Fan casing Fan motor Heat exchanger Header Expansion valve Air filter Refrigerant gas pipe connection Refrigerant liquid pipe connection Electrical control box Air inlet Air outlet Drain pump Drain pipe connection 4.1.7.1 RPI-(1.5/2.0)FSRE Dimensions Drain piping Dimension (mm) Air outlet (mm) Air inlet (mm)
Page 39 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.8 RPI-(2.5-6.0)FSRE Part name Fan casing Fan motor Heat exchanger Header Expansion valve Air filter Refrigerant gas pipe connection Refrigerant liquid pipe connection Electrical control box Air inlet Air outlet Drain pump Drain pipe connection 4.1.8.1 RPI-(2.5-3.0)FSRE Dimensions Drain piping Dimension (mm) 1084 1174...
Page 40 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.8.2 RPI-(4.0-6.0)FSRE Dimensions Drain piping Dimension (mm) 1474 1564 Air outlet (mm) Air inlet (mm) 1248 1387 4.1.9 RPIH-(4.0-6.0)FSRE Part name Fan casing Fan motor Heat exchanger Header Expansion valve Air filter Refrigerant gas pipe connection Refrigerant liquid pipe connection Electrical control box Air inlet Air outlet...
Page 41 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.9.1 RPIH-(4.0-6.0)FSRE Dimensions Drain piping Dimension (mm) 1474 1564 Air outlet (mm) Air inlet (mm) 1249 1386 4.1.10 RPI-(8.0/10.0)FSN3E(-f) Part Name Fan Casing Fan Motor Heat Exchanger Strainer Wiring holes Expansion Valve Electrical Box Refrigerant Gas Pipe Refrigerant Liquid Pipe Drain Pipe Air Filter...
Page 42 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.11 RPI-(16.0/20.0)FSN3PE(-f) Part Name Fan Motor Heat Exchanger Strainer Wiring holes Expansion Valve Electrical Box Refrigerant Gas Pipe Refrigerant Liquid Pipe Drain Pipe Air Filter Hook Air Inlet Air Outlet Capacitor Fan service cover PMML0553 rev.2 - 03/2022...
Page 43 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.12 RPK-(0.4-4.0)FSR(H)M Indoor unit Air inlet Electrical hazard Louver (It is attached on electrical box cover.) Front panel Flat panel (The air filter is attached inside.) WARNING label Receiver and indication RPK-(0.4-1.5)FSR(H)M) Air outlet Indicator Receiver Indication place for indoor unit model • ...
Page 44 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.13 RPF-(1.0-2.5)FSN2E Nº Part Name Fan Casing Fan Motor Heat Exchanger Expansion Valve Distributor Air Filter Refrigerant Gas Pipe Connection Refrigerant Liquid Pipe Connection Electrical Control Box Air Inlet Air Outlet Drain pipe connection PMML0553 rev.2 - 03/2022...
Page 45 NAME OF PARTS AND GENERAL DIMENSIONS 4.1.14 RPFI-(1.0-2.5)FSN2E Nº Part Name Fan Casing Fan Motor Heat Exchanger Expansion Valve Distributor Air Filter Refrigerant Gas Pipe Connection Refrigerant Liquid Pipe Connection Electrical Control Box Air Inlet Air Oulet Drain pipe connection PMML0553 rev.2 - 03/2022...
Page 46 NAME OF PARTS AND GENERAL DIMENSIONS 4.2 OUTDOOR UNITS 4.2.1 RAS-3HVRC2 Dimension Model RAS-3HVRC2 26.5 127.5 15.88 9.52 Nº Description Remarks 30x80 long hole Punched drain hole Attachment hole for M10 anchor bolt 2-U cut hole Air suction inlet — Punched drain hole For drain pipe Attachment hole for M10 anchor bolt 2-Long hole...
Page 47 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.2 RAS-(4-6)H(V)(R/N)(C/P)2E Nº Part Name Nº Part Name Compressor Reversing Valve Crankcase heater Accumulator Micro-computer control expansion valve Stop valve for gas line Electrical box (different for 1ph and 3ph models) Stop valve for liquid line Low pressure switch for control Air inlet High pressure sensor Air outlet High pressure switch for protection Propeller fan...
Page 48 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.3 RAS-(4-6)(X)(V)NP1E 7T143459 Nº Part Name Nº Part Name Compressor Receiver Heat exchanger Accumulator Propeller fan (2pcs.) Check joint Electrical box Fan motor (2pcs.) Strainer High pressure switch for protection Distributor Sensor for refrigerant pressure Reversing Valve Pressure switch for control Micro-computer control expansion valve Silencer...
Page 49 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.4 RAS-(8-10)XHNPE / RAS-(8-10)HNCE Nº Part Name Nº Part Name Compressor Accumulator Heat exchanger Check joint Electrical box Propeller fan (2pcs.) Fan motor (2pcs.) High pressure switch for protection Strainer Sensor for refrigerant pressure Distributor Pressure switch for control Reversing Valve Crankcase heater Micro-computer control expansion valve...
Page 50 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.5 RAS-12HNC Part Name Part Name Compressor Check Valve Heat exchanger Accumulator Propeller fan (2pcs.) Oil Separator Check Joint Fan motor (2pcs.) Electrical Box Strainer Distributor High Pressure Switch Reversing Valve Pressure Sensor Micro-computer control expansion valve Pressure Switch for Control Solenoid valve Crankcase Heater Capillary tube...
Page 51 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.6 RASC-(4-6)HNPE Nº Part name Remarks Air inlet Air outlet Electrical box cover Electrical box Fan service cover / Optional air outlet Stop valve protection Ø25x2 Holes for wiring connections Ø30x1 (outer diameter) Drain pipe connection Holes for fixing unit 4-Ø12x28 Refrigerant liquid pipe Flare nut: Ø9.52 (3/8”) Refrigerant gas pipe Flare nut: Ø15.88 (5/8”)
Page 52 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.7 RASC-(8/10)HNPE Nº. Part name Remarks Air inlet Air outlet Electrical box cover Electrical box Fan service cover / Optional air outlet Stop valve protection Ø25x2 Holes for wiring connections Ø30x2 (Outer diameter) Drain pipe connection Holes for fixing unit 4-Ø12x28 Refrigerant liquid pipe Flare nut: Ø9.52 (3/8”) (RASC-8HP) Refrigerant liquid pipe Flare nut: Ø12.7 (1/2”) (RASC-10HP)
Page 53 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.8 RAS-(4-6)FSVNME Nº Part Name Nº Part Name Nº Part Name Electrical control box (different for 1ph/3ph) Compressor Check valve Crankcase heater Solenoid valve Air inlet Stop valve for liquid line Check joint Air outlet Stop valve for gas line Strainer Fan propeller Low pressure sensor...
Page 54 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.9 RAS-(4-6)FSNME Nº Part Name Nº Part Name Nº Part Name Electrical control box (different for 1ph/3ph) Compressor Check valve Crankcase heater Solenoid valve Air inlet Stop valve for liquid line Check joint Air outlet Stop valve for gas line Strainer Fan propeller Low pressure sensor...
Page 55 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.10 RAS-(8-12)FSXNME Nº Part Name Nº Part Name Nº Part Name Electrical control box Compressor Check valve Crankcase heater (3 pcs) Solenoid valve (SVG,SVA) Air inlet Stop valve for liquid line Reversing valve (RVR1 RVR2) Air outlet Stop valve for gas line (Low) Check joint (low) Fan propeller...
Page 56 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.11 RAS-FSNSE1 (Standard series) 4.2.11.1 RAS-(8-12)FSNSE1 Air outlet Air inlet Part Name Part Name Check Joint (High) Compressor (Inverter) Heat Exchanger Check Joint (for Oil) Electrical Control Box Propeller Fan Fan Motor Low Pressure Sensor Accumulator (Pressure Vessel) High Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Switch for Protection Micro-Computer Control Expansion Valve (2pcs.) Strainer...
Page 57 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.11.2 RAS-14FSNSE1 Air outlet 1219 Air inlet Part Name Part Name Check Joint (High) Compressor (Inverter) Heat Exchanger Check Joint (for Oil) Electrical Control Box Propeller Fan Fan Motor Low Pressure Sensor Accumulator (Pressure Vessel) High Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Switch for Protection Micro-Computer Control Expansion Valve (2pcs.) Strainer...
Page 58 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.11.3 RAS-(16/18)FSNSE1 Air outlet 1219 Air inlet Part Name Part Name Check Joint (High) Compressor (2 Inverters) Heat Exchanger Check Joint (for Oil) Electrical Control Box Propeller Fan Fan Motor Low Pressure Sensor Accumulator (Pressure Vessel) High Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Switch for Protection (2pcs.) Micro-Computer Control Expansion Valve (2pcs.) Strainer...
Page 59 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.11.4 RAS-(20-24)FSNSE1 Air outlet 1609 Air inlet Part Name Part Name Check Joint (High) Compressor (2 Inverters) Heat Exchanger Check Joint (for Oil) Electrical Control Box Propeller Fan Fan Motor Low Pressure Sensor Accumulator (Pressure Vessel) High Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Switch for Protection (2pcs.) Micro-Computer Control Expansion Valve (3pcs.) Strainer...
Page 60 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.12 RAS-FSXNSE(1) (Standard series) 4.2.12.1 RAS-(8-12)FSXNSE(1) Air outlet Air inlet Part Name Part Name Check Joint (Low) Compressor (Inverter) Heat Exchanger Check Joint (High) Check Joint (for Oil) Propeller Fan Electrical Box Fan Motor Accumulator (Pressure Vessel) Low Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Sensor Micro-Computer Control Expansion Valve (2pcs.) High Pressure Switch for Protection...
Page 61 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.12.2 RAS-14FSXNSE(1) Air outlet 1219 Air inlet Part Name Part Name Check Joint (Low) Compressor (Inverter) Heat Exchanger Check Joint (High) Check Joint (for Oil) Propeller Fan Electrical Box Fan Motor Accumulator (Pressure Vessel) Low Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Sensor Micro-Computer Control Expansion Valve (2pcs.) High Pressure Switch for Protection Reversing Valve (2pcs.)
Page 62 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.12.3 RAS-(16/18)FSXNSE(1) Air outlet 1219 Air inlet Part Name Part Name Check Joint (Low) Compressor (2 Inverters) Heat Exchanger Check Joint (High) Check Joint (for Oil) Propeller Fan Electrical Box Fan Motor Accumulator (Pressure Vessel) Low Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Sensor Micro-Computer Control Expansion Valve (2pcs.) High Pressure Switch for Protection (2pcs.)
Page 63 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.12.4 RAS-(20-24)FSXNSE(1) Air outlet 1609 Air inlet Part Name Part Name Check Joint (Low) Compressor (2 Inverters) Heat Exchanger Check Joint (High) Check Joint (for Oil) Propeller Fan Electrical Box Fan Motor Accumulator (Pressure Vessel) Low Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Sensor Micro-Computer Control Expansion Valve (3pcs.) High Pressure Switch for Protection (2pcs.)
Page 64 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.13 RAS-FSNPE1 (High Efficiency series) 4.2.13.1 RAS-(5/6)FSNPE1 Air outlet Air inlet Part Name Part Name Check Joint (High) Compressor (Inverter) Heat Exchanger Check Joint (for Oil) Electrical Control Box Propeller Fan Fan Motor Low Pressure Sensor Accumulator (Pressure Vessel) High Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Switch for Protection Micro-Computer Control Expansion Valve (2pcs.)
Page 65 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.13.2 RAS-(8-14)FSNPE1 Air outlet Air inlet Part Name Part Name Check Joint (High) Compressor (Inverter) Heat Exchanger Check Joint (for Oil) Electrical Control Box Propeller Fan Fan Motor Low Pressure Sensor Accumulator (Pressure Vessel) High Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Switch for Protection Micro-Computer Control Expansion Valve (2pcs.) Strainer...
Page 66 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.13.3 RAS-(16/18)FSNPE1 Air outlet 1609 Air inlet Part Name Part Name Check Joint (High) Compressor (2 Inverters) Heat Exchanger Check Joint (for Oil) Electrical Control Box Propeller Fan Fan Motor Low Pressure Sensor Accumulator (Pressure Vessel) High Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Switch for Protection (2pcs.) Micro-Computer Control Expansion Valve (2pcs.) Strainer...
Page 67 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.14 RAS-FSXNPE(1) (High Efficiency series) 4.2.14.1 RAS-(5/6)FSXNPE(1) Air outlet Air inlet Part Name Part Name Check Joint (Low) Compressor (Inverter) Heat Exchanger Check Joint (High) Check Joint (for Oil) Propeller Fan Electrical Box Fan Motor Accumulator (Pressure Vessel) Low Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Sensor Micro-Computer Control Expansion Valve (2pcs.) High Pressure Switch for Protection...
Page 68 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.14.2 RAS-(8-14)FSXNPE(1) Air outlet 1219 Air inlet Part Name Part Name Check Joint (Low) Compressor (Inverter) Heat Exchanger Check Joint (High) Check Joint (for Oil) Propeller Fan Electrical Box Fan Motor Accumulator (Pressure Vessel) Low Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Sensor Micro-Computer Control Expansion Valve (2pcs.) High Pressure Switch for Protection Reversing Valve (2pcs.)
Page 69 NAME OF PARTS AND GENERAL DIMENSIONS 4.2.14.3 RAS-(16/18)FSXNPE(1) Air outlet 1609 Air inlet Part Name Part Name Check Joint (Low) Compressor (2 Inverters) Heat Exchanger Check Joint (High) Check Joint (for Oil) Propeller Fan Electrical Box Fan Motor Accumulator (Pressure Vessel) Low Pressure Sensor Oil Separator (Not Pressure Vessel) High Pressure Sensor Micro-Computer Control Expansion Valve (3pcs.) High Pressure Switch for Protection (2pcs.)
Page 70 5 REMOTE CONTROLLER Hitachi air conditioning systems are complemented by a range of individual remote controls covering the main customer needs. It is recommended to always install an individual remote control for the local control of each unit. Indoor units can be controlled in simultaneous operation by grouping them in one remote control group.
Page 71 REFRIGERANT CYCLE Hot start during heating operation To prevent cold air discharge, the fan speed is controlled from the slow position to the set position according to the discharge air temperature. At this time the lover is fixed horizontally. At this time, “HOT-ST” is displayed on LCD when the indoor unit is connected to the wired remote control switch PC-ARFPE, and the louver is fixed horizontally. After this control is completed, the setting is returned to the set fan speed and the fixed louver is ...
Page 72 REFRIGERANT CYCLE 7.1.2 RPK-FSRHM only Refrigerant Flow Direction (Cooling Operation) Refrigerant Flow Direction (Heating Operation) Field Refrigerant Piping Flare Connection Refrigerant Liquid Pipe Connection Refrigerant Liquid Pipe Connection Refrigerant Liquid Pipe Connection EV-1.5N1 Refrigerant Gas Pipe Connection Mark Part name Heat Exchanger Distributor Strainer...
Page 73 REFRIGERANT CYCLE 7.2.2 UTOPIA IVX X series - RAS-(4-10)XH(V)NP(1)E RAS-(4-6)XH(V)NP1E Part name Compressor Heat exchanger Accumulator Receiver (Ø9.52) Micro-Computer control expansion valve Reversing valve (Ø6.35) (Ø9.52) (Ø19.05) Solenoid valve for gas bypass Strainer (Ø19.05) Distributor (Ø15.88) Check joint (Ø12.7) High pressure switch for protection (Ø12.7) Sensor for refrigerant pressure Stop valve for gas line...
Page 74 REFRIGERANT CYCLE RAS-10XHNPE (Ø12.7) (Ø9.53) (Ø6.35) (Ø19.05) (Ø19.05) (Ø19.05) (Ø25.4) (Ø15.88) (Ø19.05) (Ø19.05) 7S136671 Part name Compressor Heat exchanger Accumulator Micro-Computer control expansion valve Reversing valve Solenoid valve for gas bypass Strainer Distributor Check joint High pressure switch for protection Sensor for refrigerant pressure Stop valve for gas line Stop valve for liquid line Check valve...
Page 75 REFRIGERANT CYCLE 7.2.3 UTOPIA series - RAS-(3-6)H(V)R(C/P)2(E) RAS-3HVRC2 Nº Part name Compressor Air side heat exchanger Accumulator Refrigerant strainer Ø6.35 Distributor Silencer 4-way valve OU electronic expansion valve Ø6.35 Ø6.35 Ø4.76 Ø9.52 Ø8.0 Refrigerant check joint Ø12.7 Stop valve for gas line Stop valve for liquid line Ø12.7 Ø9.52 High pressure switch for protection...
Page 76 REFRIGERANT CYCLE RAS-(4-6)H(V)(N/R)(C/P)2E XEKS2000 Nº Name of parts Nº Name of parts Nº Name of parts Compresor Distributor Silencer Heat exchanger Check joint Pressure switch (Low pressure control) Accumulator High pressure swtich for protection) Liquid pipe thermistor (Te) Expansion valve Pressure sensor (High pressure control) Discharge gas thermistor (Td) 4-way valve Stop valve (gas line)
Page 77 REFRIGERANT CYCLE 7.2.4 UTOPIA IVX series - RAS-(8-12)-HNC(E) RAS-(8/10)HNCE (Ø9.52) (Ø9.52) (Ø19.05) (Ø19.05) (Ø19.05) (Ø6.35) (Ø25.4) (Ø15.88) (Ø19.05) (Ø19.05) 7S138348-9 Part name Compressor Heat exchanger Accumulator Micro-Computer control expansion valve Reversing valve Solenoid valve for gas bypass Strainer Distributor Check joint High pressure switch for protection Pressure switch for control Stop valve for gas line Stop valve for liquid line...
Page 78 REFRIGERANT CYCLE RAS-12HNC (Ø15.88) (Ø22.0) (Ø19.05) (Ø6.35) (Ø6.35) (Ø9.52) (Ø6.35) (Ø6.35) (Ø6.35) (Ø19.05) (Ø19.05) (Ø9.52) (Ø12.7) (Ø12.7) 7S141036 Part name Part name Expansion valve Compressor Heat exchanger Check valve Accumulator Solenoid valve for gas bypass Oil separator Check joint Strainer Stop valve for liquid line Distributor Stop valve for gas line Distributor...
Page 79 REFRIGERANT CYCLE 7.3 OUTDOOR UNITS: CENTRIFUGAL VRF SERIES 7.3.1 RASC-(4-6)HNPE Cooling refrigerant flow or Heating refrigerant flow Field refrigerant piping Flare nut connection Brazing connection defrost Part name Part name Part name Compressor Distributor Pressure switch for control Heat exchanger Check joint Ambient thermistor Accumulator High pressure switch for protection Evaporator pipe thermistor Liquid tank High pressure sensor for refrigerant...
Page 80 REFRIGERANT CYCLE 7.3.2 RASC-(8/10)HNPE Cooling refrigerant flow or Heating refrigerant flow Field refrigerant piping Flare nut connection Brazing connection defrost Part name Part name Compressor High pressure switch for protection Heat exchanger High pressure sensor for refrigerant pressure Accumulator Stop valve for gas line Electronic expansion valve Stop valve for liquid line Reversing valve Check valve Solenoid valve for gas bypass...
Page 81 REFRIGERANT CYCLE 7.4 OUTDOOR UNITS: SET FREE MINI SERIES 7.4.1 RAS-(4-6)FS(V)NME Name of parts Name of parts Name of parts Compresor 4-way valve Solenoid valve Oil separator Check joint Capillary (gas by-pass) Heat exchanger Strainer Capillary (oil return) Expansion valve Pressure switch (high pressure) Accumulator Pressure switch (control) Stop valve (liquid line)
Page 82 REFRIGERANT CYCLE 7.4.2 RAS-(8-12)FSXNME Name of parts Name of parts Name of parts Expansion valve (MV1) Compresor Oil separator Heat exchanger Check joint Check valve Accumulator 4-way valve (RVR2) Pressure switch (high pressure) Strainer Solenoid valve Stop valve gas line (High/Low) Stop valve gas line (Low)* Subcooler Capilary Expansion valve (MVA) ...
Page 83 Check joint Check joint High pressure sensor Reversing valve Stop valve (RVR Capillary tube for gas line Heat exchanger Strainer Solenoid valve (SVA) Check valve Strainer Oil separator High pressure Micro-Computer switch for control expansion protection Strainer valve (MV Capillary tube Compressor Check joint (1 Inverter) Strainer...
Page 84 Check joint Check joint High pressure sensor Reversing valve (RVR Capillary tube Stop valve Heat exchanger 1 for gas line Strainer Solenoid valve Strainer (SVA) Check valve Micro-Computer control Oil separator expansion valve (MV High pressure Heat exchanger 2 switch for Strainer protection Capillary tube Compressor (1 Inverter) Check joint Strainer...
Page 85 Check joint Check joint High pressure sensor Reversing valve (RVR Capillary tube Heat exchanger 1 Stop valve for gas line Strainer Solenoid valve Strainer (SVA) Check valve Check valve Micro-Computer control Oil separator Oil separator expansion valve (MV Heat exchanger 2 High pressure High pressure switch switch for Strainer for protection...
Page 86 Check joint Check joint High pressure sensor Reversing valve Stop valve Capillary tube (RVR for gas line Heat exchanger 1 Solenoid valve Strainer Strainer (SVA) Check valve Check valve Micro-Computer control Oil separator Oil separator expansion valve (MV Heat exchanger 2 High pressure switch High pressure switch for protection for protection Strainer...
Page 87 Check Joint Check Joint High pressure sensor Reversing valve Strainer (RVR Reversing valve Stop valve Heat Exchanger (RVR Solenoid valve for Gas Line (SVG) (High/Low) Capillary Tube Strainer Stop valve for Gas Line Check valve (Low) Only Strainer for Heat Solenoid valve recovery (SVA) Strainer Micro-Computer Control...
Page 88 Check Joint Check Joint High pressure sensor Reversing valve Strainer (RVR Reversing valve Stop valve Solenoid valve (RVR for Gas Line Heat Exchanger 1 (SVG) (High/Low) Strainer Capillary Tube Stop valve Micro-Computer Check valve for Gas Line Control Expansion (Low) valve(MV Strainer Only for Heat recovery Solenoid valve Oil separator...
Page 89 Check Joint Check Joint High pressure sensor Reversing valve Strainer (RVR Reversing valve Stop valve for Solenoid valve (RVR Heat Exchanger 1 Gas Line (SVG) (High/Low) Strainer Micro-Computer Capillary Tube Control Expansion valve(MV Stop valve High Pressure Switch for Protection for Gas Line Strainer High Pressure (Low).
Page 90 Check Joint High pressure sensor Check Joint Reversing valve Strainer (RVR Stop valve Reversing valve Solenoid valve Heat Exchanger 1 for Gas Line (SVG) (RVR (High/Low) Strainer Micro-Computer Capillary Tube Control Expansion High Pressure Stop valve valve(MV Switch for for Gas Line Check valve Protection (Low) Strainer High Pressure...
Page 91 Check joint Check joint High pressure sensor Reversing valve (RVR Stop valve Capillary tube for gas Heat exchanger 1 line Strainer Solenoid valve (SVA) Check valve Strainer Oil separator High pressure Micro-Computer switch for Strainer control expansion protection Capillary tube valve (MV Compressor Check joint (1 Inverter) Strainer...
Page 92 Check joint Check joint High pressure sensor Reversing valve (RVR Capillary tube Stop valve Heat exchanger 1 for gas line Strainer Solenoid valve Strainer (SVA) Check valve Micro-Computer control expansion Oil separator valve (MV High pressure Heat exchanger 2 switch for Strainer protection Capillary tube Compressor (1 Inverter) Check joint...
Page 93 Check joint Check joint High pressure sensor Reversing valve (RVR Stop valve Capillary tube for gas line Heat exchanger 1 Strainer Solenoid valve Strainer (SVA) Check valve Check valve Micro-Computer control Oil separator Oil separator expansion valve (MV1) High pressure switch High pressure Heat exchanger 2 switch for protection for protection Strainer...
Page 94 Check Joint Check Joint High pressure sensor Reversing valve (RVR Strainer Reversing valve Stop valve (RVR Heat Exchanger 1 for Gas Line Solenoid valve (High/Low) (SVG) Capillary Tube Strainer Stop valve for Gas Line (Low) Check valve Strainer Only for Heat Solenoid valve recovery (SVA) Strainer Micro-Computer Control...
Page 95 Check Joint Check Joint High pressure sensor Reversing valve Strainer (RVR Stop valve for Reversing valve Solenoid valve Gas Line Heat Exchanger 1 (RVR (SVG) (High/Low) Strainer Capillary Tube Stop valve Check valve Micro-Computer for Gas Line Control Expansion (Low) valve(MV Strainer Only for Heat recovery Solenoid valve Oil separator...
Page 96 Check Joint High pressure sensor Check Joint Reversing valve Strainer (RVR Reversing valve Solenoid valve Stop valve for Heat Exchanger 1 (SVG) Gas Line (RVR (High/Low) Strainer Micro-Computer Capillary Tube Control Expansion High Pressure Stop valve Switch for valve(MV for Gas Line Check valve Protection (Low) Only for Strainer High Pressure...
Page 97 REFRIGERANT CYCLE 7.6 CH-BOX 7.6.1 CH-AP160SSX, CH-AP280SSX Outdoor unit side Indoor unit side Refrigerant gas pipe connection (high/low pressure) Refrigerant gas pipe connection Refrigerant gas pipe connection (low pressure) Nº Name Field refrigerant piping Flare connection Electronic expansion valve Brazing connection Change-Over Box Strainer 7.6.2 CH-AP04MSSX Refrigerant gas pipe connection (high/low pressure)
Page 98 REFRIGERANT CYCLE 7.6.3 CH-AP08MSSX Refrigerant gas pipe connection (high/low pressure) Refrigerant gas pipe connection (low pressure) Refrigerant gas pipe connection Outdoor unit side Nº Name Electronic expansion valve Strainer Field refrigerant piping Flare connection Brazing connection Change-Over Box Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant...
Page 99 REFRIGERANT CYCLE 7.6.5 CH-AP16MSSX Refrigerant gas pipe connection (high/low pressure) Refrigerant gas pipe connection (low pressure) Refrigerant gas pipe connection Outdoor unit side Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant liquid pipe liquid pipe liquid pipe liquid pipe...
Page 100 REFRIGERANT PIPING 8 REFRIGERANT PIPING 8.1 SELECTION OF THE COPPER PIPES The copper pipe used for the installation must be specific for refrigeration systems. C A U T I O N • The copper pipe used in the refrigeration installations is different to the copper pipe used in installations carrying domestic or heating water. • The copper pipe for refrigeration installations is especially treated for outdoors and indoors. The interior surface finish makes it easier for the refrigerant to circulate and withstands the action of the lubricant oil used in outdoor units.
Page 101 REFRIGERANT PIPING 8.2 FLARED PIPES 8.2.1 Selection of the connection with flare fitting If it is not possible to perform the widening operation, use a connection with flare fitting. Distance between sides -B- of the nut -A- Diameters (mm) -B- (mm) Ø6.35 Ø9.52 Ø12.7 Ø15.88 Ø19.05 Check that there are no scratches, adhered grinding swarf, deformation or surface unevenness at the flaring part. Before tightening the flare nut, apply the refrigerant oil (field-supplied) of the same type and brand that the compressor installed in the outdoor unit is using in thin layer over the flaring part. Do not apply the oil on other portions. Tighten the flare nut for the liquid pipe to the specified torque with two spanners. Then, tighten the flare nut for the gas pipe in the same way. After tightening work, check that there is no refrigerant leakage. Apply refrigerant oil Do not apply the refrigerant oil to the...
Page 102 REFRIGERANT PIPING C A U T I O N • Secure the fixed connection with a suitable wrench and use a torque wrench to tighten the flare nut on the threaded connections. • Do not exceed the torque value indicated in the table. The fitting can become misshapen and the connection may leak. If temperature and humidity inside the ceiling exceed 27ºC/RH80%, dew condensation occurs on the surface of the accessory insulation. Wrap additional insulation (approx. 5~ 10mm thickness) around the accessory insulation of the refrigerant pipe as a preventive measure. For buried pipe with joints such as an elbow or a socket, provide service access doors to facilitate the check for connection. The pipes must be reinforced by an earthquake resistant support so that they will not be damaged by an external force. Do not clamp the refrigerant pipe tightly when supporting them for prevention of heat stress.
Page 103 REFRIGERANT PIPING 8.3 GENERAL INSTRUCTIONS ON THE INSTALLATION OF REFRIGERANT PIPES 8.3.1 Preparing copper refrigeration pipes Clean the area where the copper refrigeration pipe preparation work is to be carried out. It must particularly be free of waste, soil, wood or metal shavings and, in general, any substance that could enter the ends of the pipe during handling. The copper pipe must be clean and have no remains of adhesive, cement, dust or other substances adhered to it.
Page 104 REFRIGERANT PIPING 8.3.2 Cutting copper refrigeration pipes Use a pipe cutter and define the necessary length of pipe and add a few more centimetres to give yourself enough margin in case the cut has to be repeated. Remove any internal burrs arising from the pipe cutter using a pipe reamer. While making the cut, slant the pipe downwards to prevent burrs or shavings from falling inside the pipe. C A U T I O N •...
Page 105 REFRIGERANT PIPING 1 Heat the outer pipe previously to ensure the filler metal flows more easily. 2 Heat the inner pipe evenly. 3 Rubber cap. 4 Valve with no packing. 5 High pressure pipe. 6 0.03 to 0.05 MPa (0.3 to 0.5 kg/cm 7 Reducer valve: only open the valve when gas is required. 8 Nitrogen gas flow, 0.05 m /h or less.
Page 106 Indoor unit 8.5.1 Line branch and header branch installation Install the distributor supplied by Hitachi on request. A tee can not be installed instead of a branch pipe. Fix the branch pipe horizontally to the pillar, wall or ceiling. Piping must not be fixed rigidly to the wall as thermal expansion and contraction can cause pipe fracture. Correct position of Line Branch E-SN/E-XN series ...
Page 107 REFRIGERANT PIPING 8.6 PIPING CONNECTION FOR OUTDOOR UNIT Don not apply two Use two spanners here Do not apply for pipe connection spanners work here two spanners at Stop valve this position. If Do not work (spindle type) applied, leakage with two will occur.
Page 108 REFRIGERANT PIPING N O T E Hold the cover with a hand to remove screws as the cover may fall down. Service cover Clasp (3 places) (picture as example) a. For the front and side piping Front piping hole Side piping hole To use racking or conduit tubes, check the size and remove part following the slit. N O T E Place insulation (field supplied) to protect cables and pipes from being damaged by plate edges.
Page 109 REFRIGERANT PIPING 4 Check to ensure that the stop valves are closed completely before connecting pipes. 5 Connect the field supplied refrigerant pipes to the indoor unit and outdoor unit. Apply the oil thinly at the seat flare nut and pipe before tightening. 6 After connecting the refrigerant piping, seal the open space between knockout hole and refrigerant pipes by using insulation material. 7 Operation of stop valve should be performed according to the figure below.
Page 110 REFRIGERANT PIPING 8.6.2 RASC-(8/10)HNPE The gas pipe accessory (factory-supplied silencer) shall be brazed to the field supplied gas line, and connected to the gas valve as indicated in the drawing: The stop valves are located on the right side of unit cover. Before connecting refrigerant piping, the stop valve protection cover shall be removed. Gas valve Liquid valve 1 Mount the piping cover in order to avoid water entering into the unit. Seal the holes where pipes and wires are inserted, by using a insulation (field-supplied).
Page 111 REFRIGERANT PIPING 8.6.3 SET FREE Mini SERIES 1 The pipes can be connected from 4 directions as shown in the figure below. Front side piping work Rear side piping work Bottom side piping work Right side piping work (Knock out hole) 2 Remove the necessary screws depending on the piping direction work selected as shown in the figure below. RAS-(4-6)FS(V)NME Service cover Stop valves Piping work RAS-(8-12)FSXNME Service cover Stop valves Piping work N O T E...
Page 112 REFRIGERANT PIPING 3 Check the size of the pipes to be connected and remove the appropriate part of the cabinet (indicated with in the diagrams below) following the pre-cut punches. N O T E Cables shall not contact directly to the pipes. a. For the front and side piping RAS-(4-6)FS(V)NME RAS-(8-12)FSXNME Side piping hole...
Page 113 REFRIGERANT PIPING 8.6.3.1 Stop valves LIQUID VALVE (Spindle type) GAS VALVE (Ball type) RAS-(4-6)FS(V)NME RAS-(4-6)FS(V)NME RAS-(8-12)FSXNME RAS-(8-12)FSXNME 1.5mm 90º 90º HEX4 Tightening torque (N·m) 33-42 20-25 27.5-32.5 14-18 14-18 12-14 33-42 68-82 95-105 ≤5 ≤5 Nº Description Remarks Core valve Check Joint cap Only the charging hose can be connected.
Page 114 REFRIGERANT PIPING Heat pump (4-6)HP Liquid pipe (Ø9.52) (field-supplied) Liquid pipe (Ø9.52) (field-supplied) Liquid pipe (Ø15.88) (field-supplied) Gas pipe (Ø19.05) (field-supplied) 10HP 12HP Accessory pipe (OD9.52→ID12.7) Liquid pipe (Ø9.52) (field-supplied) Liquid pipe (Ø12.7) (field-supplied) Accessory pipe (*) (OD19.05→ID22.2) Accessory pipe (OD19.05→ID25.4) Gas pipe (Ø22.2) (field-supplied) Gas pipe (Ø25.4) (field-supplied)
Page 115 REFRIGERANT PIPING 8.6.4 SET FREE FSXNSE / FSXNPE SERIES Fix the pipes adequately in order to avoid vibration and excessive force to the valve. 1 The pipes can be installed in three directions (front, rear or bottom side) from the bottom base. For vibration protection, properly fix the piping connection and check that no excessive force is applied to the stop valve. 2 pipes system Front side Bottom side Bottom side Rear side 3 pipes system...
Page 116 REFRIGERANT PIPING For heat pump systems (2 pipes) For piping from bottom base Control wiring Liquid pipe Transmission wiring Gas pipe Power source wiring Front side Seal gaps with packings (field-supplied). Install accessory rubber bushes to the wiring outlets. For heat recovery systems (3 pipes) ...
Page 117 REFRIGERANT PIPING 8.6.4.1 Stop valve Follow the restrictions for refrigerant piping (permissible length, height difference). If not, the outdoor unit may be damaged or fail. The stop valves shall be closed completely (factory setting) when the refrigerant piping connection is performed. Do not open the stop valves until all the refrigerant piping connections, air-tight test and vacuuming have been completed.
Page 118 REFRIGERANT PIPING Liquid valve Tighten the flare nut for liquid stop valve according to the following torque. If an excessive force is applied to the flare nut, the refrigerant leakage may occur from the spindle part. (Put two spanners as shown in the right figure when the piping is removed and attached. If not, the refrigerant leakage may occur.) Do not put two spanners here. Refrigerant leakage may occur. Two spanners work Tightening work for stop valve (liquid) Do not put two spanners here Flare nut Flare nut Flare nut Put two spanners here...
Page 119 REFRIGERANT PIPING FSXNSE - FSXNPE Hexagonal Tightening torque (N·m) wrench size Spindle (Valve) Flare Nut Check Joint (mm) High/Low Outdoor Unit pressure Gas Valve Gas Valve Gas Valve (Base Unit) Liquid Liquid Liquid Liquid gas valve Liquid Valve Valve Valve Valve Valve RAS-(8-12)FSXNSE...
Page 120 REFRIGERANT PIPING RAS-20FSXNSE RAS-22FSXNSE Stop valve Stop valve (High/low pressure gas) (High/low pressure gas) Stop valve Stop valve Stop valve (Liquid) Stop valve (Liquid) (Low pressure gas) (Low pressure gas) Flaring (in the field) Flaring (in the field) Liquid pipe (Ø15.88) Liquid pipe (Ø15.88) (field-supplied) (field-supplied) Accessory pipe Accessory pipe Ø22.2Ø28.58...
Page 121 REFRIGERANT PIPING RAS-14FSXNPE RAS-16FSXNPE Stop valve Stop valve (High/low pressure gas) (High/low pressure gas) Stop valve (Liquid) Stop valve Stop valve Stop valve (Liquid) (Low pressure gas) (Low pressure gas) Flaring (in the field) Flaring (in the field) Accessory pipe OD15.88OD12.7 Liquid pipe (Ø12.7) (field-supplied) Accessory pipe ( ** ) Liquid pipe (Ø12.7) ID22.2OD28.58...
Page 122 REFRIGERANT PIPING For heat recovery system (3 pipes) RAS-8FSXNSE RAS-10FSXNSE Stop valve Stop valve (High/low pressure gas) (High/low pressure gas) Stop valve Stop valve (Liquid) (Low pressure gas) Stop valve (Liquid) Stop valve (Low pressure gas) Flaring (in the field) Flaring (in the field) Accessory pipe Liquid pipe (Ø9.52) Adapter (field-supplied).
Page 123 REFRIGERANT PIPING RAS-24FSXNSE RAS-5FSXNPE Stop valve Stop valve (High/low pressure gas) (High/low pressure gas) Stop valve Stop valve (Liquid) Stop valve (Liquid) Stop valve (Low pressure gas) (Low pressure gas) Flaring (in the field) Flaring (in the field) Liquid pipe (Ø15.88) Accessory pipe (field-supplied) Adapter (field-supplied). ID22.2OD12.07 Liquid pipe (Ø9.52) (field-supplied) Accessory pipe...
Page 124 REFRIGERANT PIPING RAS-18FSXNPE ( * ) If longer piping is needed add the following Stop valve (High/low pressure gas) Stop valve Stop valve (Liquid) (Low pressure gas) Flaring (in the field) Adapter (field-supplied) Liquid pipe (Ø15.88) (field-supplied) Adapter (field-supplied) Gas pipe (field-supplied) Adapter (field-supplied) Gas "low pressure" pipe (28.58) (field-supplied) 90º Elbow (field-supplied) Gas "high/low pressure"...
Page 125 REFRIGERANT PIPING 8.6.5 SET FREE FS(X)NSE1 / FS(X)NPE1 Fix the pipes adequately in order to avoid vibration and excessive force to the valve. 1 The pipes can be installed in three directions (front, rear or bottom side) from the bottom base. For vibration protection, properly fix the piping connection and check that no excessive force is applied to the stop valve. 2 pipes system Front side Bottom side Rear side Bottom side 3 pipes system...
Page 126 REFRIGERANT PIPING For heat recovery systems (3 pipes) For piping from bottom base Liquid pipe Control wiring Transmission wiring High/Low pressure gas pipe Low pressure gas pipe Power source wiring Front side Seal gaps with packings (field-supplied) Install accessory rubber bushes to the wiring outlets N O T E •...
Page 127 REFRIGERANT PIPING Heat exchanger fin Liquid valve Heat exchanger Gas valve (body) Field piping connecting portion of gas valve Valve stay Metal plate for protection Closing pipe Burner Heat recovery system Service port Stop valve for gas valve (high/low pressure) Stop valve for liquid valve Stop valve for gas valve (low pressure)
Page 128 REFRIGERANT PIPING Liquid valve Tighten the flare nut for liquid stop valve according to the following torque. If an excessive force is applied to the flare nut, the refrigerant leakage may occur from the spindle part. (Put two spanners as shown in the right figure when the piping is removed and attached. If not, the refrigerant leakage may occur.) Do not put two spanners here. Refrigerant leakage may occur. Tightening work for stop valve (liquid) Two spanners work Do not put two spanners here Flare nut Flare nut Flare nut Put two spanners here...
Page 129 REFRIGERANT PIPING FS(X)NSE1 - FS(X)NPE1 Hexagonal Tightening torque (N·m) wrench size Spindle (Valve) Flare Nut Check Joint (mm) High/Low Outdoor Unit (Base pressure Gas Valve Gas Valve Gas Valve Unit) Liquid Liquid Liquid Liquid gas valve Liquid Valve Valve Valve Valve Valve RAS-(8-12)FS(X)NSE1...
Page 130 REFRIGERANT PIPING RAS-20FSNSE1 RAS-22FSNSE1 Stop valve (gas) Stop valve (gas) Stop valve (Liquid) Stop valve (Liquid) Flaring (in the field) Flaring (in the field) Adapter (field-supplied). Liquid pipe (Ø15.88) (field-supplied) Liquid pipe (Ø9.52) (field-supplied) Accessory pipe ID22.2OD19.5 Gas pipe 90º Elbow 90º Elbow (Ø28.58) (field-supplied) Gas pipe (field-supplied) (field-supplied) (Ø19.05) (field-supplied) RAS-24FSNSE1 RAS-5FSNPE1 Stop valve (gas)
Page 131 REFRIGERANT PIPING RAS-14FSNPE1 RAS-16FSNPE1 Stop valve (gas) Stop valve (gas) Stop valve (Liquid) Stop valve (Liquid) Flaring (in the field) Flaring (in the field) Accessory pipe Adapter (field-supplied) OD15.88OD12.7 Adapter (field-supplied) Liquid pipe (Ø12.7) (field-supplied) (**) Gas pipe Liquid pipe (Ø12.7) (Ø28.58) (field-supplied) (field-supplied) 90º Elbow Gas pipe 90º Elbow (Ø25.4) (field-supplied) Gas pipe (field-supplied) (field-supplied)
Page 132 REFRIGERANT PIPING For heat recovery system (3 pipes) RAS-8FSXNSE1 RAS-10FSXNSE1 Stop valve Stop valve (High/low pressure gas) (High/low pressure gas) Stop valve Stop valve (Liquid) Stop valve (Liquid) Stop valve (Low pressure gas) (Low pressure gas) Flaring (in the field) Flaring (in the field) Accessory pipe Liquid pipe (Ø9.52) Adapter (field-supplied).
Page 133 REFRIGERANT PIPING RAS-24FSXNSE1 RAS-5FSXNPE1 Stop valve Stop valve (High/low pressure gas) (High/low pressure gas) Stop valve Stop valve (Liquid) Stop valve (Liquid) Stop valve (Low pressure gas) (Low pressure gas) Flaring (in the field) Flaring (in the field) Accessory pipe Liquid pipe (Ø15.88) Adapter (field-supplied). ID22.2OD12.07 (field-supplied) Liquid pipe (Ø9.52) (field-supplied) Accessory pipe...
Page 134 REFRIGERANT PIPING RAS-18FSXNPE1 (*) If longer piping is needed add the following Stop valve (High/low pressure gas) Stop valve Stop valve (Liquid) (Low pressure gas) Flaring (in the field) Adapter (field-supplied). Liquid pipe (Ø15.88) (field-supplied) Adapter (field-supplied) Gas pipe Adapter (field-supplied) (field-supplied) Gas "low pressure" pipe (28.58) (field-supplied) 90º Elbow (field-supplied)
Page 135 REFRIGERANT PIPING LENGHT 9 REFRIGERANT PIPING LENGHT 9.1 UTOPIA SERIES N O T E The following information is not applicable to the RAS-XH(V)NP1E series. 9.1.1 Refrigerant piping length The refrigerant piping between the indoor unit and the outdoor unit should be designed using the following chart. Keep the design point within the area of the chart, which is showing the applicable height difference according to piping length. Height difference (m) Total length between outdoor unit and each indoor unit...
Page 136 REFRIGERANT PIPING LENGHT Maximum refrigerant piping length UTOPIA series Outdoor Unit 3 HP 4 HP 5 HP 6 HP 8 HP 10 HP 12 HP Actual length (L) Maximum piping length between the outdoor unit and the farthest indoor unit Equivalent length (EL) 2 units (A+B+C) Total piping length...
Page 137 REFRIGERANT PIPING LENGHT Maximum height difference (clarification) 10m (IVX-X) 3m (UTOPIA / IVX-C) 10m (IVX-X) 3m (UTOPIA / IVX-C) 10m (IVX-X) 10m (IVX-X) 3m (UTOPIA / IVX-C) 3m (UTOPIA / IVX-C) ( 6m) 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. 9.1.3 Piping system for line branch (UTOPIA IVX only) 8 HP 10 HP...
Page 138 REFRIGERANT PIPING LENGHT Maximum refrigerant piping length (Line branch system) UTOPIA series Outdoor Unit 8 HP 10 HP 12 HP Actual Length (L1) Maximum piping length between the outdoor unit and the farthest indoor unit Equivalent length (EL) Maximum piping length from first branch to each indoor unit (L2) Maximum piping length from branch to indoor unit (L3) Total piping length L4 + (L31+L32+L33..) Maximum height difference, outdoor / indoor (H) (Outdoor unit is higher / lower)
Page 139 REFRIGERANT PIPING LENGHT 9.1.5 Refrigerant piping size and Multi-Kit/distributor Select the piping connection sizes according to the following procedures: • Between outdoor unit and branch pipe: Select the same pipe connection size as the pipe size of the outdoor unit. • ...
Page 140 ≤ 1.5 HP Ø12.70 Ø6.35 1.8/2.0HP Ø15.88 Ø6.35 ≥ 2.3 HP Ø15.88 Ø9.52 Connections including indoor units 8 and 10 HP are not possible If the capacity ratio between IU group 1+2 and 3+4 is higher than 60/40% please install a line branch system or contact with your Hitachi dealer. Line branch system (UTOPIA IVX only) Pipe Size (A) Multi-Kit model Multi-Kit model Outdoor Unit HP Gas (mm) Liquid (mm) Ø25.40 Ø9.52 E-162SN4...
Page 141 REFRIGERANT PIPING LENGHT 9.2 UTOPIA CENTRIFUGAL VRF SERIES 9.2.1 Refrigerant piping length The refrigerant piping between the indoor unit and the RASC unit should be designed using the following instructions. Keep the design point within the area of the chart, which shows the applicable height difference according to piping length. When RASC unit is installed higher than indoor unit...
Page 142 REFRIGERANT PIPING LENGHT Maximum refrigerant piping length (Header branch installation) Item 4 HP (m) 5 HP (m) 6 HP (m) 8 HP (m) 10 HP (m) Maximum piping length between the Actual piping length (L) RASC unit and the farthest indoor Equivalent piping length (EL) unit 2 indoor units (A + B + C)
Page 143 REFRIGERANT PIPING LENGHT 9.2.3 Piping system (Line branch installation) RASC unit 4 HP 5 HP 6 HP 8 HP 10 HP 2 - 5 (*) 2 - 6 (*) Allowed quantity of indoor units (*): In case of more than 4 indoor units, please respect the restrictions shown in chapter “4.1 Combinability” of TCGB0091 rev.2. Maximum refrigerant piping length (Line branch installation) Item 4 HP (m) 5 HP (m) 6 HP (m) 8 HP (m) 10 HP (m) Actual piping length (L1) Maximum piping length between the RASC unit and the farthest indoor unit...
Page 144 REFRIGERANT PIPING LENGHT 9.2.4 Combinations of piping size and piping length Refrigerant piping length between RASC unit and the farthest indoor unit (m) Liquid Ø6.35 Ø9.52 Ø12.70 Ø15.88 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 (4-6) HP (3) (4) 8 HP...
Page 145 (1.8/2.0) HP Ø15.88 Ø6.35 (1.8/2.0) HP Ø15.88 Ø6.35 E-102SN4 ≥ 2.3HP ≥ 2.3 HP Multi-Kit  Ø9.52 Ø6.35 Ø15.88 Ø9.52 E-102SN4 Connections including 8.0HP or 10.0HP indoor units are not possible. N O T E If the capacity ratio between IU group 1+2 and 3+4 is higher than 60/40%, install a line branch system or contact with your Hitachi dealer. PMML0553 rev.2 - 03/2022...
Page 146 REFRIGERANT PIPING LENGHT Case B Pipe Size (B,C,D,E) Indoor unit capacity Gas (mm) Liquid (mm) (0.8-1.5) HP Ø12.7 Ø6.35 (1.8/2.0) HP Ø15.88 Ø6.35 ≥ 2.3HP Ø15.88 Ø9.52 Connections including 8.0HP or 10.0HP indoor units are not possible. Pipe Size (A) RASC unit Multi-Kit Gas (mm)
Page 147 REFRIGERANT PIPING LENGHT 9.3 SET FREE MINI SERIES 9.3.1 RAS-(4-6)FS(V)NME pipe working conditions First branch Part Mark Permitted pipe length Total piping length Total liquid piping actual length < 180m Actual length < 85m Maximum piping length Equivalent length < 100m Maximum piping length between Multi-Kit of 1st branch and each IU <...
Page 148 ≤ 40m ≤ 40m Outdoor unit is lower ≤ 15m ≤ 15m Height difference between indoor units N O T E • Install the indoor unit and the Multi-Kit according to the instructions given in this manual. • The installation conditions for the refrigerant pipes are different depending on the number of indoor units connected. • Check that the gas pipe and the liquid pipe are equivalent in terms of length and installation system. • The total pipe length permitted must be less than 500 m due to the maximum additional refrigerant charge limitation. • Where the length of pipe L3 between each Multi-Kit and each indoor unit is considerably longer than on another indoor unit, the refrigerant will not flow correctly and performance is lower in comparison with other models (recommended pipe length: up to 15 m). • Note that the approval from Hitachi Customer Service Department must be obtained beforehand in case that the recommended number indoor units is exceeded and the total piping lenght is over 300m. Contact the Hitachi Customer Service Department in order to provide the relevant system characteristics for feasibility evaluation. • Note that the approval from Hitachi Customer Service Department must be obtained beforehand in case that height difference is over 50m. • When the total length of the refrigerant pipes exceeds 300 m, the maximum additional refrigerant charge is restricted. PMML0553 rev.2 - 03/2022...
Page 149 REFRIGERANT PIPING LENGHT 3 pipes First branch CH-M High / Low pressure gas pipe, low pressure gas pipe, liquid pipe Gas pipe, liquid pipe Low pressure gas pipe, liquid pipe CH: CH-Box (Single branch type) CH : CH-M: CH-Box (Multiple branch type) CH-M : (Exclusive use of Terminal IU cooling operation) Permitted pipe length...
Page 150 In case that a branch is located downstream of the CH-Box and also the connected indoor unit capacity is 1.5 HP or less, use Ø15.88 for the gas pipe. • (*) To calculate the piping length do not consider a Multi-Kit placed between the CH-Bos and the indoor unit. (In the following examples Lm is not L3). CH-M Multi-Kit Multi-Kit Multi-Kit Multi-Kit • (**) Note that the approval from Hitachi Customer Service Department must be obtained beforehand in case that the recommended indoor units is exceeded and the total piping lenght is over 300 m. Contact the Hitachi Customer Service Department in order to provide the relevant system characteristics for feasibility evaluation. • Note that the approval from Hitachi Customer Service Department must be obtained beforehand in case that height difference is over 50 m. • Recommended height difference between CH-Box and indoor unit is within 15 m. If the height difference exceeds this value, it may cause a decrease of operating performance. •...
Page 151 REFRIGERANT PIPING LENGHT 2 The difference between the piping length from the first branch to the farthest indoor unit and the piping length from the first branch to the closest indoor unit must be within 40m. (L2.1) - (L1.2) ≤40m (L2.2) - (L1.1) ≤40m Piping length from the Multi-Kit at the branch to the L2.1 terminal indoor unit is within 40~90 m L1.1 L1.1 (b+d) L1.2 (g+i) First branch Terminal Multi-Kit...
Page 152 REFRIGERANT PIPING LENGHT 9.4 SET FREE FS(X)N(S/P)E(1) SERIES 9.4.1 Connection Kit Selection The optional piping connection kit is required for the combination unit. Operating mode Outdoor unit Number of outdoor units Connection kit Kit contents • for gas: 1 26 - 48 MC-21AN1 • ...
Page 153 REFRIGERANT PIPING LENGHT 9.4.2 Example of installation For heat pump systems (2 pipes) • For 3 units combination Front side piping connection Downward piping connection Liquid pipe (field-supplied) Gas connection kit 1 Outdoor unit 2 Gas pipe (field-supplied) Gas connection kit 2 Outdoor unit 3 Liquid connection kit 1 Accessory for connection of pipes (L-shaped) Accessory for connection of pipes (Z-shaped)
Page 154 Difference in height between outdoor units N O T E • Install the indoor unit and the Multi-Kit according to the instructions given in this manual. • The connection kit is taken into account from the side of the indoor unit (as connection kit 1). • The installation conditions for the refrigerant pipes are different depending on the number of indoor units connected. • For 2 to 4 outdoor unit combination, the outdoor unit “A” should be connected to the piping connection kit 1. The details of piping connection kit shall be referred to the installation manual of itself. • Check that the gas pipe and the liquid pipe are equivalent in terms of length and installation system. • The piping length between outdoor units should be La ≤ Lb ≤ Lc ≤ 10m (If the piping length is incorrect, it may cause failure of outdoor unit due to flowing back the refrigerant). • The total pipe length permitted must be less than 1000 m due to the maximum additional refrigerant charge limitation. • Where the length of pipe L3 between each Multi-Kit and each indoor unit is considerably longer than on another indoor unit, the refrigerant will not flow correctly and performance is lower in comparison with other models (recommended pipe length: up to 15 m). • : Longer piping (up to 110m) is available for all models. Note that the approval from Hitachi Customer Service Department must be obtained (*1) beforehand in case that height difference is over 50m. Contact the Hitachi Customer Service Department in order to provide the relevant system characteristics for feasibility evaluation. The maximum piping lenght for 56HP to 96HP heat pump models is 90m. • : When the total length of the refrigerant pipes exceeds 300 m, the maximum additional refrigerant charge is restricted. (*2) PMML0553 rev.2 - 03/2022...
Page 155 REFRIGERANT PIPING LENGHT For heat recovery systems (3 pipes) Upstream side Outdoor Outdoor Outdoor unit C unit A unit B Indoor unit side (*) M aintain a straight-line distance of 500 mm or more for piping after the piping connection kit. Piping Piping connection kit 2 connection kit 1 First branch...
Page 156 In case that the combination of indoor unit capacity is 10HP for CH-AP280SSX, the performance may decrease approximate 5% in cooling and 10% in heating. • The excess of the total capacity may cause insufficient performance and abnormal sound. Be sure to connect within the allowable total capacity. • For the exclusive cooling operation, connect indoor units with low pressure gas pipe and liquid pipe (without CH-Box). The total capacity of the exclusive cooling operation should be smaller than 50% of the total indoor unit capacity. • In case that a branch is located downstream of the CH-Box and also the connected indoor unit capacity is 1.5HP or less, use Ø15.88 for the gas pipe. • (*) To calculate the piping length do not consider a Multi-Kit placed between the CH-Bos and the indoor unit. (In the following examples Lm is not L3). CH-M Multi-Kit Multi-Kit Multi-Kit Multi-Kit • (**): Longer piping (up to 110m) is available for all models. Note that the approval from Hitachi Customer Service Department must be obtained beforehand in case that height difference is over 50m. Contact the Hitachi Customer Service Department in order to provide the relevant system characteristics for feasibility evaluation. • (*2): Recommended height difference between CH-Box and indoor unit is within 15m. If the height difference exceed this value, it may cause a decrease of operating performance. • (*3): The total pipe length permitted must be less than 1000 m due to the maximum additional refrigerant charge limitation. In case “Recommended IU quantity” is exceeded, next graph restriction applies to total piping length: Maximum IU Recommended IU Indoor units quantity quantity quantity • Make sure to calculate a lineal proportion when working out intermediate cases. In case the total pipe length is longer than 300m, capacity may drop progressively as a result of heat loss through the pipes. PMML0553 rev.2 - 03/2022...
Page 157 REFRIGERANT PIPING LENGHT 9.4.4 Connection of refrigerant pipes for heat pump system (2 pipes) N O T E If the main refrigerant pipe specified in the tables is not available at the installation location, select the size given in brackets. In this case, prepare a suitable reducer. Main pipe Alternative pipe and reducer Main pipe Alternative pipe and reducer Ø9.52 (Ø9.52-Ø12.7) Ø25.4 (Ø25.4-Ø28.6) Ø12.7 (Ø12.7-Ø15.88) Ø28.58 (Ø28.6-Ø31.75) Ø15.88 (Ø15.88-Ø19.05) Ø31.75...
Page 158 REFRIGERANT PIPING LENGHT Ⓒ Multi-Kit after first branch Total indoor unit HP Model <12 E-102SN4 12-17.99 E-162SN4 18-25.99 E-242SN3 26-55.99 E-302SN3 ≥ 56 MW-NP2682A3 Ⓓ Header branch Total indoor unit HP Number of header branches Model E-102SN4 5-10 E-162SN4  D iameter of the main pipe (from the base of the unit or connection kit 1 to the first branch). Equivalent pipe length < 100 m Outdoor unit (HP) Liquid Ø15.88...
Page 159 REFRIGERANT PIPING LENGHT  P ipe diameter after first branch or between Multi-Kits in the main branch. Total indoor unit capacity after the first Liquid branch (HP) < 6 Ø15.88 Ø9.52 (6-8.99) Ø19.05 Ø9.52 (9-11.99) Ø22.20 Ø9.52 (12-15.99) Ø25.40 Ø12.70 (16-17.99) Ø28.58 Ø12.70 (18-25.99) Ø28.58 Ø15.88 (26-35.99) Ø31.75 Ø19.05 (36-55.99) Ø38.10 Ø19.05 (56-67.99) Ø44.45...
Page 160 REFRIGERANT PIPING LENGHT 9.4.5.1 Pipe sizes for RAS-(8-24)FS(X)NSE(1) and RAS-(5-18)FS(X)NPE(1) (Base unit) Outdoor unit Refrigerant piping To indoor units All measurements are in mm. RAS-(8-24)FS(X)NSE(1) Model RAS-8FS(X)NSE(1) RAS-10FS(X)NSE(1) RAS-12FS(X)NSE(1) RAS-14FS(X)NSE(1) RAS-16FS(X)NSE(1) 19.05 22.2 25.4 25.4 28.58 Piping size (19.05 - 22.2) (22.2 - 25.4) (25.4 - 28.58) (25.4 - 28.58)
Page 161 REFRIGERANT PIPING LENGHT 9.4.5.2 Pipe sizes for RAS-(26-48)FS(X)NSE(1) and RAS-(20-36)FS(X)NPE(1) (Combination of 2 units) Indoor unit on left side Indoor unit on right side Outdoor unit A Outdoor unit A Outdoor unit B Outdoor unit B Piping connection kit Piping connection kit To indoor units To indoor units Install the outdoor units and connect the refrigerant pipes as shown in the diagram.
Page 162 REFRIGERANT PIPING LENGHT RAS-(20-36)FS(X)NPE(1) Model RAS-20FS(X)NPE(1) RAS-22FS(X)NPE(1) RAS-24FS(X)NPE(1) Outdoor unit A RAS-10FS(X)NPE(1) RAS-12FS(X)NPE(1) RAS-12FS(X)NPE(1) Combination unit Outdoor unit B RAS-10FS(X)NPE(1) RAS-10FS(X)NPE(1) RAS-12FS(X)NPE(1) Branch pipe (OU pipe connection kit) MC-20AN1 28.58 28.58 28.58 (28.58-31.75) (28.58-31.75) (28.58-31.75) 15.88 15.88 15.88 Liquid (15.88-19.05) (15.88-19.05) (15.88-19.05) 22.2...
Page 163 REFRIGERANT PIPING LENGHT 9.4.5.3 Pipe sizes for RAS-(50-72)FS(X)NSE(1) and RAS-(38-54)FS(X)NPE(1) (Combination of 3 units) Indoor unit on left side Indoor unit on right side Outdoor unit A Outdoor unit B Outdoor unit C Outdoor unit A Outdoor unit C Outdoor unit B Piping connection kit 2 Piping connection kit 1 Piping connection kit 1...
Page 164 REFRIGERANT PIPING LENGHT Model RAS-66FS(X)NSE(1) RAS-68FS(X)NSE(1) RAS-70FS(X)NSE(1) RAS-72FS(X)NSE(1) Outdoor unit A RAS-24FS(X)NSE(1) RAS-24FS(X)NSE(1) RAS-24FS(X)NSE(1) RAS-24FS(X)NSE(1) Combination unit Outdoor unit B RAS-24FS(X)NSE(1) RAS-22FS(X)NSE(1) RAS-24FS(X)NSE(1) RAS-24FS(X)NSE(1) Outdoor unit C RAS-18FS(X)NSE(1) RAS-22FS(X)NSE(1) RAS-22FS(X)NSE(1) RAS-24FS(X)NSE(1) Branch pipe (OU pipe connection kit) MC-NP31SA 44.45 (41.28-44.45) 44.45 (41.28-44.45) 44.45 (41.28-44.45) 44.45 (41.28-44.45)
Page 165 REFRIGERANT PIPING LENGHT 9.4.5.4 Pipe sizes for RAS-(74-96)FS(X)NSE(1) and RAS-(56-72)FS(X)NPE(1) (Combination of 4 units) Outdoor unit A Outdoor unit B Outdoor unit C Outdoor unit D Outdoor unit D Outdoor unit C Outdoor unit B Outdoor unit A Piping connection kit 2 Piping connection kit 2 Piping connection kit 3 Piping connection kit 3...
Page 166 REFRIGERANT PIPING LENGHT Model RAS-90FS(X)NSE(1) RAS-92FS(X)NSE(1) RAS-94FS(X)NSE(1) RAS-96FS(X)NSE(1) Outdoor unit A RAS-24FS(X)NSE(1) RAS-24FS(X)NSE(1) RAS-24FS(X)NSE(1) RAS-24FS(X)NSE(1) Outdoor unit B RAS-24FS(X)NSE(1) RAS-24FS(X)NSE(1) RAS-24FS(X)NSE(1) RAS-24FS(X)NSE(1) Combination unit Outdoor unit C RAS-24FS(X)NSE(1) RAS-22FS(X)NSE(1) RAS-24FS(X)NSE(1) RAS-24FS(X)NSE(1) Outdoor unit D RAS-18FS(X)NSE(1) RAS-22FS(X)NSE(1) RAS-22FS(X)NSE(1) RAS-24FS(X)NSE(1) Branch pipe (OU pipe connection kit) MC-NP40SA 50.8 (50.8-54.0) 50.8 (50.8-54.0)
Page 167 REFRIGERANT PIPING LENGHT Model RAS-66FS(X)NPE(1) RAS-68FS(X)NPE(1) RAS-70FS(X)NPE(1) RAS-72FS(X)NPE(1) Outdoor unit A RAS-18FS(X)NPE(1) RAS-18FS(X)NPE(1) RAS-18FS(X)NPE(1) RAS-18FS(X)NPE(1) Outdoor unit B RAS-16FS(X)NPE(1) RAS-18FS(X)NPE(1) RAS-18FS(X)NPE(1) RAS-18FS(X)NPE(1) Combination unit Outdoor unit C RAS-16FS(X)NPE(1) RAS-16FS(X)NPE(1) RAS-18FS(X)NPE(1) RAS-18FS(X)NPE(1) Outdoor unit D RAS-16FS(X)NPE(1) RAS-16FS(X)NPE(1) RAS-16FS(X)NPE(1) RAS-18FS(X)NPE(1) Piping connection kit MC-NP40SA 44.45 (41.28-44.45) 44.45 (41.28-44.45)
Page 168 REFRIGERANT PIPING LENGHT 9.4.7 Size of pipes (Ø mm) for heat recovery systems (3 pipes) For selecting the pipe sizes between the outdoor unit and the piping connection kit , between the piping connection kits  and for piping connection kit Ⓐ, refer to the items from “Connection of refrigerant pipes for heat recovery system (3 pipes)”. Three pipes section Low pressure Outdoor...
Page 169 REFRIGERANT PIPING LENGHT Ⓑ First branch Outdoor unit HP Model E-52XN3 6-10 E-102XN3 12-16 E-162XN3 18,20 E-202XN3 22, 24 E-242XN3 26-54 E-322XN3 Ⓒ Multi-Kit after first branch (3 pipes section) Total indoor unit HP Model <6 E-52XN3 6-11.99 E-102XN3 12-17.99 E-162XN3 18-21.99 E-202XN3 22-25.99 E-242XN3 ≥ 26 E-322XN3 Ⓓ ...
Page 170 REFRIGERANT PIPING LENGHT  Pipe diameter after first branch or between Multi-Kits in the main branch (3 pipes section).  Pipe diameter between the Multi-Kit and the CH-Box. Total HP indoor unit Gas, low pressure Gas, high/low pressure Liquid < 6 Ø15.88 Ø12.7 Ø9.52 (6-8.99) Ø19.05 Ø15.88 Ø9.52 (9-11.99) Ø22.20 Ø19.05 Ø9.52 (12-15.99) Ø25.40 Ø22.20 Ø12.70 (16-17.99) Ø28.58 Ø22.20 Ø12.70 (18-21.99) Ø28.58 Ø22.20 Ø15.88 (22-25.99)
Page 171 REFRIGERANT PIPING LENGHT Ⓖ CH-Box Available combination of indoor unit capacity (HP) Number of connectable Type CH-Box Model Branch indoor unit per branch*4 per CH-Box per Branch 1 - 7 *1 ≤6.0 CH-AP160SSX Single*3 1 - 8 *1 ≤10.0 CH-AP280SSX 10.0 1 - 6 *2 ≤6.0 / 1x8.0HP / 1x10.0HP CH-AP04MSSX 16.0 1 - 6 *2 ≤6.0 / 1x8.0HP / 1x10.0HP CH-AP08MSSX 30.0 Multiple...
Page 172 REFRIGERANT PIPING LENGHT 9.4.7.2 Pipe sizes for RAS-(26-48)FSXNSE(1) and RAS-(20-36)FSXNPE(1) (Combination of 2 units) Indoor unit on left side Indoor unit on right side Outdoor unit A Outdoor unit B Outdoor unit A Outdoor unit B Piping connection kit Piping connection kit To indoor units To indoor units Install the outdoor units and connect the refrigerant pipes as shown in the diagram.
Page 173 REFRIGERANT PIPING LENGHT RAS- RAS- RAS- RAS- RAS- RAS- Model 38FSXNSE(1) 40FSXNSE(1) 42FSXNSE(1) 44FSXNSE(1) 46FSXNSE(1) 48FSXNSE(1) RAS- RAS- RAS- RAS- RAS- RAS- Outdoor unit A 24FSXNSE(1) 22FSXNSE(1) 24FSXNSE(1) 22FSXNSE(1) 24FSXNSE(1) 24FSXNSE(1) Combination unit RAS- RAS- RAS- RAS- RAS- RAS- Outdoor unit B 14FSXNSE(1) 18FSXNSE(1) 18FSXNSE(1)
Page 174 REFRIGERANT PIPING LENGHT RAS-(20-36)FSXNPE(1) Model RAS-20FSXNPE(1) RAS-22FSXNPE(1) RAS-24FSXNPE(1) Outdoor unit A RAS-10FSXNPE(1) RAS-12FSXNPE(1) RAS-12FSXNPE(1) Combination unit Outdoor unit B RAS-10FSXNPE(1) RAS-10FSXNPE(1) RAS-12FSXNPE(1) Branch pipe (OU pipe connection kit) MC-20XN1 28.58 28.58 28.58 Low pressure gas (28.58-31.75) (28.58-31.75) (28.58-31.75) High / Low pressure 22.2 25.4 25.4...
Page 175 REFRIGERANT PIPING LENGHT 9.4.7.3 Pipe sizes for RAS-(50-54)FSXNSE(1) and RAS-(38-54)FSXNPE(1) (Combination of 3 units) Indoor unit on left side Indoor unit on right side Outdoor unit A Outdoor unit C Outdoor unit B Outdoor unit C Outdoor unit B Outdoor unit A Piping connection kit 2 Piping connection kit 1 Piping connection kit 2...
Page 176 REFRIGERANT PIPING LENGHT RAS-(38-54)FSXNPE(1) RAS- RAS- RAS- RAS- RAS- Model 38FSXNPE(1) 40FSXNPE(1) 42FSXNPE(1) 44FSXNPE(1) 46FSXNPE(1) Outdoor unit A RAS-14FSXNPE(1) RAS-14FSXNPE(1) RAS-14FSXNPE(1) RAS-18FSXNPE(1) RAS-18FSXNPE(1) Combination Outdoor unit B RAS-12FSXNPE(1) RAS-14FSXNPE(1) RAS-14FSXNPE(1) RAS-14FSXNPE(1) RAS-14FSXNPE(1) unit Outdoor unit C RAS-12FSXNPE(1) RAS-12FSXNPE(1) RAS-14FSXNPE(1) RAS-12FSXNPE(1) RAS-14FSXNPE(1) Piping connection kit MC-30XN1 Low pressure...
Page 177 REFRIGERANT PIPING LENGHT Model RAS-48FSNXPE(1) RAS-50FSNXPE(1) RAS-52FSNXPE(1) RAS-54FSNXPE(1) Outdoor unit A RAS-18FSXNPE(1) RAS-18FSXNPE(1) RAS-18FSXNPE(1) RAS-18FSXNPE(1) Combination Outdoor unit B RAS-18FSXNPE(1) RAS-18FSXNPE(1) RAS-18FSXNPE(1) RAS-18FSXNPE(1) unit Outdoor unit C RAS-12FSXNPE(1) RAS-14FSXNPE(1) RAS-16FSXNPE(1) RAS-18FSXNPE(1) Piping connection kit MC-30XN1 Low pressure 38.1 38.1 38.1 38.1 (38.1-41.3) (38.1-41.3)
Page 178 REFRIGERANT PIPING LENGHT 9.4.8 Pipe branching restrictions (installation with main piping branch) Unlimited number of main piping branches as long as the following restrictions are respected. In the case that the piping length L2 from the Multi-Kit at the first branch to the farthest indoor unit is over 40m, follow the instructions below when performing the field-supplied piping work. Example 1: Installation with main piping branch Piping length from the Multi-Kit at the first branch to the terminal indoor units is within 40-90 m 1 In the case that the piping length L2 is over 40m, the diameter size of gas and liquid lines “b and c” or “g and h” should be increased by one size with reducers (field-supplied).
Page 179 REFRIGERANT PIPING LENGHT 9.4.9 Precautions for the installation of the outdoor unit Order of installation of the units When the installation and piping work for the multiple outdoor units are performed, it is required that the arrangement for outdoor units and piping length be determined.
Page 180 REFRIGERANT PIPING LENGHT Refrigerant pipe installation between outdoor units For refrigerant piping work, the optional piping connection kit is required to branch the pipe between outdoor units. The arrangement for outdoor units should be determined depending on the piping direction when the refrigerant piping work and installation work are planned.
Page 181 REFRIGERANT PIPING LENGHT 2 Place the piping connection kit lower than the outdoor unit piping connection. In case that the piping connection kit is placed higher than the outdoor unit piping connection, keep 300mm (maximum) between the piping connection kit and the bottom of the outdoor unit. Also, provide the oil trap (minimum 200mm) between the piping connection kit and the outdoor unit. • ...
Page 182 REFRIGERANT PIPING LENGHT 3 In case that the piping length between outdoor units is 2m or more, the oil trap for the gas pipe should be provided so that accumulation of refrigerant oil may not occur. • 2 and 3 Units Combination Less than 2m Indoor unit side Less than 2 m...
Page 183 REFRIGERANT PIPING LENGHT 4 Place the outdoor unit pipe horizontally or with the pipe slanted downward towards the indoor unit side so that accumulation of refrigerant oil may not occur in the pipe. • 2 and 3 Units Combination Indoor unit side Refrigerant oil accumulates in the pipe.
Page 184 REFRIGERANT PIPING LENGHT 5 For servicing, in case that the pipe is placed frontward of the outdoor unit, secure min. 500mm between the outdoor unit and piping connection kits. (When the compressor is replaced, a space of min. 500mm is required.) Outdoor unit Outdoor unit Outdoor unit...
Page 185 DRAIN PIPING 10 DRAIN PIPING 10.1 GENERAL INFORMATION C A U T I O N • Do not create an upper-slope or rise for the drain piping, since drain water will flow back to the unit and leakage to the room will occur when the unit operation is stopped. INCORRECT Incorrect: upward slope Incorrect: rising part • Do not connect the drain pipe with sanitary or sewage piping or any other drainage piping. • When the common drain piping is connected with other indoor units, the connected position of each indoor unit must be higher than the common piping. The pipe size of the common drain pipe must be large enough according to the unit size and number of unit. CORRECT Š Pump system Min. 100mm (higher as possible) 1/25 to 1/100 Down-Slope Vinyl chloride pipe (VP25) This drain piping...
Page 186 DRAIN PIPING 10.2 RCIM-(0.4-2.5)FSRE • Do not create an upper-slope or rise for the drain piping, since drain water will flow back to the unit and leakage to the room will occur when the unit operation is stopped. • Do not connect the drain pipe with sanitary or sewage piping or any other drainage piping. • When the common drain piping is connected with other indoor units, the connected position of each indoor unit must be higher than the common piping. The pipe size of the common drain pipe must be large enough according to the unit size and number of units. • Drain piping will require insulating if the drain is installed in a location where condensation forming on the outside of drain pipe may drop and cause damage. The insulation for the drain pipe must be selected to insure vapour sealing and prevent condensation forming. • Drain trap should be installed next to indoor unit. This trap must be designed to good practice and be checked with water (charged) and tested for correct flow. Do not tie or clamp the drain pipe and refrigerant pipe together. N O T E • Install drainage in accordance with national and local codes. • Pay attention to the thickness of the insulation when the left side piping is performed. If it is too thick, piping can not be installed in the unit. 10.2.1 Drain pipe connection 1 The position of the drain pipe connection is shown below. Drain pipe connection 2 Prepare a polyvinyl chloride pipe with a 32mm outer diameter (VP25).
Page 187 DRAIN PIPING 7 In case of raising the drain pipe, install it according to the dimension shown in the figure below. The total drain piping length of a+b+c shall be within 1100mm. Ceiling 1 to 1.5m a (Max. 300mm) Hose band (accessory) Support part 1/25 to 1/100 Down-slope (Max. 50mm, shorter as possible) Drain hose (accessory) 8 Attach the factory-supplied hose clamp to the vinyl tape (gray) attached to the drain hose. The hose clamp shall be 20mm away from the end face of the drain hose. Then tighten the hose clamp to make sure that it is approximately 28mm in length from the ...
Page 188 DRAIN PIPING Installing common drain pipe • Install the common drain pipe on a downward slope to make sure that it is lower than each rising part of the drain pipe from the indoor unit. • The pipe size of the common drain pipe must be larger than VP30 (nominal diameter 30mm, outer diameter 38mm) according to the number of the connected indoor units.
Page 189 DRAIN PIPING Simplified Operation of Drain-up Mechanism The following is the simplified operation procedure of the drain-up mechanism. a. Turn OFF the power supply. b. Disconnect the service connector (marked with green). c. Turn ON the power supply and start the simplified operation of the drain-up mechanism. d. Turn OFF the power supply. e. Reconnect the service connector. N O T E Make sure to hold the connector part. Do not take out and plug in the connector frequently (more than 2 or 3 times).
Page 190 DRAIN PIPING 10.3 RPI(L/H)-(0.4-6.0)FSRE After performing drain piping work and electrical wiring, check to ensure that water flows as in the following procedure: 10.3.1 Checking with the standard Drainage (drain pump) • Switch ON the power supply. • Full the drain pan with approximately 1.2 liters of water. Then float switch stops the system automatically. In this operation the drain pump do not stops. • Switch OFF the power supply after. 10.3.2 Checking in case of Drainage for gravity (Only for RPIL-FSRE models) • ...
Page 191 DRAIN PIPING RPI-FSRE models Drain piping Dimension (mm) RPIH-FSRE models Drain piping Dimension (mm) 2 Prepare a polyvinyl chloride pipe with a 32 mm outer diameter. 3 Fasten the tubing to the drain hose with an adhesive and the factory-supplied clamp. The drain piping must be performed with a down-slope pitch of 1/25 to 1/100.
Page 192 DRAIN PIPING 4 Connect the factory-supplied drain hose to the drain pipe connection with the polyvinyl chloride adhesive. When cleaning the connection surface, applying the adhesive, inserting, retaining and curing the pipe, refer to information given by the adhesive manufacturer. Drain hose C A U T I O N The drain hose must be completely inserted. If it is not inserted properly, or if it is twisted, water leakage may occur.
Page 193 DRAIN PIPING Gravity Drainage (Only for RPIL-FSRE models) 1 Access to the drain pipes connection by removing the 3 fixing screws of the service cover from the unit. 2 Cut off the die-cut part of the wall passage for the drainage pipe outlet. 3 Cut the plastic flange, remove the insulation and remove the cap from the drain pan. 4 Install the Drain hose gravity kit: a. Connect the drain hose from the kit to the drain pan outlet and secure the connection with a plastic flange. b. Secure the drain hose outlet to the wall opening with 2 screws. PMML0553 rev.2 - 03/2022...
Page 194 DRAIN PIPING N O T E • If there is excessive clearance between the drain pipe connection and the drain hose, add a sealing material between both parts in order to fit and not deform the drain hose. • Insert the drain hose completely. if it is not inserted properly, or if it is twisted, water leakage may occur. • Do not apply an excessive force to the drain pipe connection. It could cause a damage. 5 Make sure that the drain hose protrudes 65mm from the front panel of the unit and is tilted approximately 5° downwards. Pump drainage hose α Dimension (mm) α 5° Gravity drainage hose 6 Assembly the service panel on the indoor unit and tighten the 3 fastening screws. PMML0553 rev.2 - 03/2022...
Page 195 DRAIN PIPING 10.4 RASC-(4-10)HNPE 10.4.1 Provision regarding installation place Drain water sometimes turns to ice. Therefore, avoid draining in an area that people often use because it is slippery. Install the unit making sure that the drain outlet part is lower (>25mm / <30mm) than the opposite side in order to avoid incorrect drain discharge.
Page 196 DRAIN PIPING 10.5 UTOPIA RAS-(4-6)H(V)(R(P/C)2E 10.5.1 Drain discharging boss When the base of the outdoor unit is temporarily utilized as a drain receiver and the drain water in it is discharged, this drain boss is utilized to connect the drain piping. Model Applicable Model DBS-26...
Page 197 DRAIN PIPING 10.6 SET FREE RAS-(5-96)FSXN(S/P)E Base of outdoor unit (All measurements are in mm) FSXNSE FSXNPE Dimension Power source wiring outlet Hole for drain (Ø26 x 2 positions) (Ø65 knockout hole) Transmission wiring outlet Positions of drain boss (optional) (Ø55 knockout hole) Control wiring outlet (Ø33 knockout hole) 8 - 12HP 5, 6HP...
Page 198 DRAIN PIPING 10.6.1 Installation position of the optional drainage kit DBS-TP10A Installation position (example: RAS-10FSXNPE, lower and side views). Drain pipes (field-supplied) Drain pipe Optional drain plug Base of unit Drain kit components Model Description Material/colour Application Drain boss PP/black Connecting for Drain Piping DBS-TP10A Drain cap PP/black Embolization for Drain Hole Rubber cap CR/black...
Page 199 ELECTRICAL WIRING 11 ELECTRICAL WIRING • When using the stranded wire for field-wiring connection, M4 crimping terminal is required. When using the single wire, make it into the shape shown in the figure below before connecting it in order to tighten the washer uniformly. Connect it with crimping Connect it direct as terminal shown below Stranded wire Single wire • Connect the cables correctly according to the marks and numbers on terminal board. • Install the transition wiring between indoor units connected to the same outdoor unit. • Do not connect the main power source cables to the control line (Terminals A, B, 1 and 2 of TB2). If it is connected, the printed circuit board (PCB) will be broken. • Comply with the following points when connecting wires to the terminal board. - (A) Attach an insulation tape or a sleeve to each terminal. - (B) Make sure that the terminals are not too close to the electrical box, to prevent a short circuit. - (C) Make sure that the terminals are not too close to each other. Attach an insulation tape or a sleeve to each terminal. Screw • Follow the local codes and regulations when selecting field wires.
Page 200 ELECTRICAL WIRING 11.1 SETTINGS OF DIP SWITCHES C A U T I O N Disconnect the power supply before modifying the DIP switch settings. Otherwise the new settings will not be valid. N O T E The “■” mark indicates the position of the DIP switches. The figures show the position of the DIP switch once the position has been set. Example of setting (DSW(5/6) - RSW (1/2)) Example of system setting with a value of: 5 Example of system setting with a value of: 16 DSWx RSWx DSWx...
Page 201 ELECTRICAL WIRING DSW3: Capacity code setting No settings are required. This DIP switch with 4 or 6 switches (depending on Indoor Units) is used to set the capacity code corresponding to the power of the indoor unit. Indoor Unit capacity 1.5 HP, 2 HP and 2.5 HP can be set to a lower capacity (1.3 HP, 1.8 HP and 2.3 HP) using the DIP switch. Only for RPK-FSR(H)M units: Indoor Unit capacity 1.0 HP can be set to a higher capacity (1.3 HP) using the DIP switch.
Page 202 ELECTRICAL WIRING DSW5 and RSW(1/2): Refrigerant cycle number setting It is required to change factory default setting, with a value of up to 63. In the same refrigerant cycle, set the same refrigerant cycle number for the outdoor unit and the indoor unit. DIP switch and rotary switch Indoor unit model (Factory setting)
Page 203 ELECTRICAL WIRING • RPI-(16.0/20.0)FSN3PE(-f) only: No setting is required. RSW1 DSW6 PCB1 PCB2 (Upper E-box) (Lower E-box) 1 2 3 4 5 6 N O T E When further connecting indoor units, make sure to set a number other than one or two for each indoor unit. DSW7: Fuse recover No settings are required. All models Factory setting In case of applying high voltage to the terminal 1-2 of TB (Transmitting wires), the fuse on the PCB is cut. In such a case, firstly correct the wiring to TB and ...
Page 204 ELECTRICAL WIRING 11.1.2 Setting of DIP switches for outdoor unit RAS-(4-6)HV(R/N)(C/P)2E Quantity and position of DIP switches The location is as follows: RAS-(4-6)HV(R/N)(C/P)2E (PCB2) RAS-(4-6)H(R/N)(C/P)2E (PCB1) Display Display (7SEG) (7SEG) DSW3 DSW1 DSW2 DSW6 SEG1 DSW2 DSW4 DSW1 PSW1 PSW2 PSW3 SEG1 DSW3...
Page 205 ELECTRICAL WIRING DSW3: Capacity Factory setting RAS-4HV(R/N)(C/P)2E RAS-5HV(R/N)(C/P)2E RAS-6HV(R/N)(C/P)2E 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 RAS-4H(R/H)(C/P)2E RAS-5H(R/N)(C/P)2E RAS-6H(R/N)(C/P)2E 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 DSW4 / RSW1: Refrigerant cycle number setting ...
Page 206 ELECTRICAL WIRING 11.1.3 Setting of DIP switches for outdoor unit RAS-(4-10)XH(V)NP(1)E and RAS-(8-10)HNCE Quantity and Position of DIP Switches The location is as follows: RAS-(4-10)XH(V)NP(1)E and RAS-(8-10)HNCE DSW1: For Test Run Factory setting DSW2: Optional Function Setting Factory setting Piping length ≤ 5m Piping lenght ≥ 30m...
Page 207 ELECTRICAL WIRING DSW3: Capacity Factory setting RAS-4XHVNP1E RAS-5XHVNP1E RAS-6XHVNP1E RAS-4XHNP1E 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 RAS-8XHNPE RAS-10XHNPE RAS-5XHNP1E RAS-6XHNP1E RAS-8HNCE...
Page 208 ELECTRICAL WIRING 11.1.4 Setting of DIP Switches for outdoor unit RAS-12HNCE Quantity and Position of DIP Switches The location is as follows: DSW1: For Test Run Factory setting DSW2: Optional function setting and piping length Factory setting Piping length ≤ 5m Piping length ≥ 30m Control to support existing pipes or when ...
Page 209 ELECTRICAL WIRING DSW3: Capacity Factory setting RAS-12HNCE DSW4 / RSW1: Refrigerant cycle number setting Factory setting (Setting for the tens digit) Factory setting (Setting for the last digit) 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 pin number 1 of DSW5 at “OFF”...
Page 210 ELECTRICAL WIRING 11.1.5 Setting and function of DIP and RSW switches for RASC units Location of DIP switches and RSW switches (PCB layout) Functions of dip switches and rotary switches N O T E • The mark “■” indicates the dip switches positions. • No mark “■” indicates pin position is not affected. •...
Page 211 ELECTRICAL WIRING DSW2: Pipe length setting (Setting is required) / Optional function setting Setting before shipment (5-30m) Initial expansion valve opening is Piping length (0~5 m) changed according to the piping. Initial expansion valve opening is Piping length (More than 30 m) changed according to the piping. Control to support existing pipes or Piping pressure setting when using Ø19,05 gas pipe (soft- annealed).
Page 212 ELECTRICAL WIRING DSW5: Setting of end-terminal resistance It is not necessary to set when the number of RASC units in the same H-LINK line is one. In case of more than one RASC unit in the same H-LINK line, set as follows: • ...
Page 213 ELECTRICAL WIRING Jumper lead setting (JP1~6) Setting before shipment: System Three-phase (3N~) N O T E 0: Open 1: Short circuit The function selection using the jumper lead setting is shown in the tables below: Setting Function Details Not used Not used When JP3 is set to “open”, current protection parameters are set for a 400 V power source voltage.
Page 214 ELECTRICAL WIRING 11.1.6 Setting of DIP switches for outdoor unit SET FREE FS(X)N(S/P)E(1) Location of the DSW switches on PCB1. C A U T I O N Display (7SEG) Before changing the settings of the DIP switches, the voltage supply should be PSW2 disconnected. Otherwise, the new settings will not be valid. SEG2 SEG1 PSW5 PSW1 PSW3 N O T E PSW2 DSW4 DSW7...
Page 215 ELECTRICAL WIRING DSW3 Setting not required. Setting before shipment: N O T E 1 2 3 4 Do not change DSW3 setting. Otherwise, it may cause abnormal operation DSW4: test run and service settings Setting required Setting before Forced compressor External input/ Cooling test run Heating test run Function setting shipment stoppage...
Page 216 ELECTRICAL WIRING DSW8: high static pressure mode setting Setting required Setting before shipment HSP setting: 30 Pa HSP setting: 60 Pa HSP setting: 80 Pa 1 2 3 1 2 3 1 2 3 1 2 3 N O T E When adopting the air outlet duct (field-supplied),make sure to set DSW8.
Page 217 ELECTRICAL WIRING DSW10 setting example Set the end terminal DSW10 DSW10 DSW10 SET FREE Series outdoor unit Unit A Unit B Unit C (unit combination) (Main) (Sub) (Sub) Cancel the end terminal setting Transmission line (no polarity) H-LINK or H-LINK II Indoor unit In the case of more than one refrigerant cycles in the same H-LINK or H-LINK II, set all No.
Page 218 ELECTRICAL WIRING 11.2 COMMON WIRING C A U T I O N All the field wiring and electrical components must comply with local codes and regulations. 11.2.1 Electrical wiring between indoor unit and outdoor unit • Connect the electrical wires between the indoor unit and the outdoor unit, as shown below. • Open a hole near the connection hole of power source wiring when multiple outdoor units are connected from one power source line.
Page 219 3 All the electric components supplied on site (main power switches, circuit breakers, wiring, connectors and connection terminals) must have been selected correctly in line with the electrical data provided in the corresponding chapter of this manual, and must comply with the applicable local regulations, codes and standards, which might be stricter than the suggested specifications in ...
Page 220 ELECTRICAL WIRING Connection diagram of the UTOPIA Series: outdoor unit and indoor units powered by independent lines 1~ 230V 50Hz 3N~ 400V 50Hz 1~ 230V 50Hz Meeting Room FLTR Meeting Room FLTR MODE SPEED LOUV. TEMP MODE SPEED LOUV. TEMP COOL HIGH...
Page 221 ELECTRICAL WIRING 11.2.3 Outdoor and indoor units layouts for SET FREE Connection diagram of SET FREE Modular FSXN(S/P)E Series: outdoor unit and indoor units powered by independent lines Meeting Room FLTR Meeting Room FLTR Meeting Room FLTR Meeting Room FLTR Meeting Room FLTR...
Page 222 ELECTRICAL WIRING 11.2.4 Connection diagram of SET FREE and RPI-(16.0/20.0)FSN3PE(-f) Indoor Unit RPI-(16.0/20.0)FSN3PE(-f) Meeting Room FLTR Meeting Room FLTR MODE SPEED LOUV. TEMP MODE SPEED LOUV. TEMP COOL COOL HIGH HIGH LOUV. LOUV. 1~ 230V 50Hz Main SET FREE outdoor unit Secondary SET FREE outdoor unit Transmission wiring H-LINK (shielded twisted pair cable), 5 Vdc non-polarity (Field supplied) Distribution box (Field supplied).
Page 223 ELECTRICAL WIRING 11.3 REMOVING / ASSEMBLING ELECTRICAL BOX (FOR RPI(L/H)FSRE SERIES N O T E Only RPI-(1.5~2.0)FSRE models have the possibility to change the location of the electrical box. All other RPI models (150Pa) must maintain the factory location for the electrical box. The electrical box of this indoor unit allows three possible configurations. At the factory, the electrical box is located on the left side, but it can be moved to the right side and even fixed directly to the wall. In order to change the source configuration (mounted on the left side), the following steps must be followed: 1 Loosen and remove the 2 screws at the bottom of the cover, of the electrical box. 2 Loosen and remove the 2 screws that hold the electrical box to the indoor unit. 3 Tilt the electrical box forward so that the flanges holding the electrical hose can be cut. α α = 15° PMML0553 rev.2 - 03/2022...
Page 224 ELECTRICAL WIRING 4 Carefully separate the electrical box from the indoor unit and softly pull the electrical hose out of the box. Mount the electrical box on the right side a. Loosen and remove the 3 screws holding the lower panel. b. Remove the bottom panel and leave it somewhere that it will not disturb. c. Re-route the electrical hose to the inside of the indoor unit and secure it with the pre-assembled flanges. d.
Page 225 ELECTRICAL WIRING e. Make sure that the entire electrical hose is properly secured and exits through the right-hand side wall opening. C A U T I O N The electrical hose must not be tightened or forced at any point in its route. f. Mount the lower panel of the indoor unit and secure it with the 3 fixing screws. g. Mount the cover of the electrical box and fasten it with the 2 fastening screws. Mount the electrical box on the wall a. Cut the bottom, pre-cut part of the electrical box wall passage and move the electrical hose so that it comes out the bottom of the electrical box. b. Present the electrical box in its final location on the wall and make sure that the electrical hose is attached to the wall free of obstacles in its path. C A U T I O N The electrical hose must not be tightened or forced at any point in its route.
Page 226 INSTALLATION CONDITIONS FOR RPI(L/H)-FSRE AND RCIM(0.4-2.5)FSRE UNITS d. Mount the cover of the electrical box and secure it with the 2 retaining screws. 12 INSTALLATION CONDITIONS FOR RPI(L/H)-FSRE AND RCIM(0.4-2.5)FSRE UNITS 12.1 DUCT AND SUCTION AIR FILTER INSTALLATION FOR RPI(L/H) 12.1.1 Field supply duct installation Fix the flexible air duct to external faces of unit flanges (the unit is equipped with factory supply flanges for this purpose). It is recommended to use a flexible field supply duct portion in order to avoid any abnormal sound vibration. Insulate frame corners by using properly tape. Field supplied. RPI units are equiped with standard air filter at the suction side. This filter is provided for the cases in which no suction duct is ...
Page 227 INSTALLATION CONDITIONS FOR RPI(L/H)-FSRE AND RCIM(0.4-2.5)FSRE UNITS Suction air filter servicing There are two options for filter extraction, depending on the location of the unit: • Lower extraction: a. Turn 90° the fixing screw and remove the lower air filter support from the unit. b. Pull down the air filter. Air filter Air filter support Fixing screw • Generic Lateral extraction: a. Turn 90° the fixing screw and remove the lateral air filter support from the unit. b. Pull the air filter and fold it over the joint as much as you need for the extraction. 180° in any direction Air filter Air filter support Fixing screw Optionally, the RPI-(1.5~2.0)FSRE unit allows access to the filter from the opposite side for proper maintenance. PMML0553 rev.2 - 03/2022...
Page 228 INSTALLATION CONDITIONS FOR RPI(L/H)-FSRE AND RCIM(0.4-2.5)FSRE UNITS 12.2 EFFICIENT USE OF COOLING AND HEATING FOR RCI/RCIM COOLING HEATING 1 Air flow direction: the appropriate air outlet angle is 1 Air flow direction: the appropriate air outlet angle is approx. 35º. If the cooling is not sufficient, change the air flow approx. 60º. If the heating is not sufficient, change the air flow direction. Pay attention to dew drop which may occur due to direction. the long cooling operation with low louver angle. 60°...
Page 229 FAN PERFORMACE CURVES 13 FAN PERFORMACE CURVES 13.1 RPI(L/H)FSRE These units provide three options for the installation: High static pressure, standard static pressure or Low static pressure conditions in each particular installation, as shown below Fan Performance Curve. RPIL-0.4FSRE RPIL-0.6FSRE Air flow (m Air flow (m /min)
Page 230 External static pressure (Pa) External static pressure (Pa) External static pressure (Pa) External static pressure (Pa) External static pressure (Pa)
Page 231 FAN PERFORMACE CURVES RPIH-4.0FSRE RPIH-5.0FSRE Air flow (m Air flow (m /min) /min) RPIH-6.0FSRE Air flow (m /min) 13.1.1 Static pressure setting RPI units have been provided by three Static Pressure levels regulation depending on the installation requirements: • High Static Pressure • Standard Static Pressure (Factory setting) • ...
Page 232 FAN PERFORMACE CURVES Fan speed availability according to the selected external static pressure According to the selected of External Static Pressure configuration (through the optional function C5) the fan speeds available in the Remote Control Switch are the ones show as example in the following pictures. High static pressure (SP-01) Standard static pressure (SP-00) Low static pressure (SP-02) Upper ESP limit High H / High Upper ESP limit High H / High Upper ESP limit High H Lower ESP limit...
Page 233 FAN PERFORMACE CURVES RASC-6HNPE RASC-8HNPE Air flow (m³/min) Air flow (m³/min) RASC-10HNPE Air flow (m³/min) N O T E • When designing a duct, check to ensure that the Air volume is within working range as indicated in the fan performance curves. • If the Air volume is set outside working range, water carry-over (drop in the ceiling or into the room), noise increase, damage to fan motor (high temperature) or insufficient Cooling/Heating capacity phenomena can occur. PMML0553 rev.2 - 03/2022...
Page 234 FAN PERFORMACE CURVES 13.2.1 Setting of the fan performance curves In some installations, it may be necessary to adjust the fan operation settings of RASC-(6/8/10)NPE units in order to achieve an optimal performance of the fan unit. The correct static pressure setting (Low / Medium / High) has to be selected using the PSW and 7-segment display on the RASC PCB, according to the pressure values below: • ...
Page 235 BEFORE OPERATION 14 BEFORE OPERATION Supply electrical power to the system for approximately 12 hours before start-up after long shutdown. Do not start the system immediately after power supply, it may cause a compressor failure, because the compressor is not heated well. Make sure that the outdoor unit is not covered with snow or ice. If covered, remove it by using hot water (approximately 50ºC). If the water temperature is higher than 50ºC, it will cause damage to plastic parts. When the system is started after a shutdown longer than approximately 3 months, it is recommended that the system be checked by your service contractor. Turn OFF the main switch when the system is stopped for a long period of time. If the main switch is not turned OFF, electricity is consumed, because the oil heater is always energized during compressor stopping.
Page 236 COMMISSIONING re-measure the insulation resistance. (Current may be required for longer, depending on the air conditions, the pipe length or the condition of the refrigerant). Check the insulation resistance and re-connect the compressor. Where the earth leakage breaker is tripped, check the recommended size in the Instruction manual.. • ...
Page 237 COMMISSIONING Where several base units are combined, stick the label on the main unit in a visible place (outdoor unit 1) so that the outdoor unit A can be easily identified. Do not stick the main label on the secondary unit (outdoor units 2 and 3). C A U T I O N Where the total insulation resistance of the unit is below 1 MΩ, the compressor insulation resistance may be low due to the refrigerant held in the compressor. This may occur if the unit is not used for long periods. 1 Disconnect the compressor cables and measure the insulation resistance of the compressor. If the resistance value is greater than 1 MΩ, the insulation fault has occurred in another electrical component. 2 If the insulation resistance is below 1 MΩ, disconnect the compressor cable on the inverter PCB. Then switch on the main power supply to apply current to the crankcase heating elements. Once current has been received for more than 3 hours, re-measure the insulation resistance. (Current may be required for longer, depending on the air conditions, the pipe length or the condition...
Page 238 VACUUM PUMPING 16 VACUUM PUMPING Basic Method If the penetration of moisture is suspected, perform “Triple Evacuation Method” that is described in the next paragraph. • Connect the gauge manifold using charging hoses with a vacuum pump or a nitrogen cylinder to the check joints of the liquid line and the gas line stop valve. • Check for any gas leakage at the flare nut connection, by using nitrogen gas to increase the pressure at 4.15 MPa for outdoor units inside of the field-supplied piping. ...
Page 239 VACUUM PUMPING Step 2 1 Vacuum until the pressure reaches 1000 microns (1.0 mmHg). 2 Pressurize with nitrogen up to 0.3 MPaG (50 PSIG) for 15 minutes. 3 Release pressure until reaching the atmosphere level, as low as 0.03 MPaG (5 PSIG). Step 3 1 Vacuum until the pressure reaches 500 microns (0.5 mmHg).
Page 240 CHARGING WORK 16.2 SET FREE HEAT RECOVERY VACUUM LAYOUT EXAMPLE Outdoor unit B Outdoor unit C Outdoor unit A Manifold gauge Nitrogen tank (for nitrogen blow during brazing and air tight test) Vacuum pump Low pressure gas line High/low pressure gas line ...
Page 241 CHARGING WORK 17.2 FOR SET FREE FS(X)NSE(1) / FS(X)NPE(1) SERIES After vacuum pumping work, check that the high/low pressure gas valve, low pressure gas valve (low pressure gas valve is for heat recovery system only) and liquid stop valve are fully closed. Charge the additional refrigerant from the check joint of liquid stop valve (acceptable error must be within 0.5 kg).
Page 242 CHARGING WORK Tightening check of stop valves After connecting the pipe, remove the caps of stop valves for high/low pressure gas, low pressure gas (for heat recovery system only) and liquid. Tighten the open-close spindle in the closing direction according to the following tightening torque. Caution for operation of stop valves a.
Page 243 CHARGING WORK Insulation work 1 Securely insulate high/low pressure and low pressure (for heat recovery system only) gas piping side and liquid piping side individually. Make sure to insulate the union flare nut for the piping connection as well. 2 Mount the piping cover equipped with the outdoor unit after connecting the pipe. Completely seal the penetration part at the bottom of the pipes with insulation in order to prevent rain water from entering the conduit.
Page 244 CHARGING WORK 17.5 SET FREE HEAT PUMP SYSTEM LAYOUT EXAMPLE Outdoor unit Nitrogen tank (for nitrogen blow during brazing and air tight test) Gas line stop valve Manifold gauge Liquid line stop valve Siphonic refrigerant cylinder (R410A) Vacuum pump Weighing equipment Gas line Liquid line...
Page 245 REFRIGERANT PUMP DOWN 18 REFRIGERANT PUMP DOWN When the refrigerant should be collected into the outdoor unit due to indoor/outdoor unit relocation, collect the refrigerant as follows: • Attach the manifold gauge to the gas stop valve and the liquid stop valve. • ...
Page 246 2 Specifications Transmission Wire: 2-Wire. Polarity of transmission wire: Non-Polar wire. Maximum outdoor units to be connected: 64 units per H-LINK II system. Maximum indoor units to be connected: 160 Units per H-LINK II system. Maximum wiring length: total 1000m (including CS-NET). In case that the total wiring length is longer than 1000 m, contact the Hitachi dealer. Recommended cable: twist pair cable with shield, over 0.75 mm (Equivalent to KPEV-S). Voltage: 5 V. N O T E Do not make a wiring in a loop. 3 DSW setting of indoor PCB and outdoor PCB.
Page 247 H-LINK II SYSTEM 19.1 SYSTEM INSTALLATION DSW SETTING DSW setting of indoor PCB and outdoor PCB for H-LINK II It is required to set DSW of every indoor unit and outdoor unit and match of the transmission circuit impedance. DSW Setting example: Cycle nº 1 Cycle nº 0 Cycle nº 2...
Page 248 TEST RUN FROM OUTDOOR UNIT SIDE 20 TEST RUN FROM OUTDOOR UNIT SIDE The procedure of test run from outdoor unit side is indicated below. Setting of this DSW is available with the power source ON. 20.1 UTOPIA IVX, UTOPIA RASC, SET FREE MINI (4-6 HP) C A U T I O N •...
Page 249 TEST RUN FROM OUTDOOR UNIT SIDE 20.2 SET FREE MINI (8-12HP) C A U T I O N • Do not touch any other electrical parts when operating switches on the PCB • Do not attach or detach service cover when the power source for the outdoor unit is ON and the outdoor unit is operated. • Turn all pins of DSW4 OFF when the test run operation is completed. Operation DSW Setting Operation Remarks •  Setting of operation mode:  The indoor unit automatically start Take care that the indoor units start operation in accord with the test run to operate when the test run of the...
Page 250 TEST RUN FROM OUTDOOR UNIT SIDE 20.3 TEST RUN CHECK LIST MODEL: SERIAL NUMBER COMPRESSOR MFG. NUMBER: DATE: CUSTOMER'S NAME AND ADDRESS: 1 Is the rotation direction of the indoor fan correct? 2 Is the rotation direction of the outdoor fan correct? 3 Are there any abnormal compressor sounds? 4 Has the unit been operated at least twenty (20) minutes? 5 Check room temperature...
Page 251 TROUBLESHOOTING 21 TROUBLESHOOTING 21.1 ON-SCREEN DISPLAY DURING ABNORMAL OPERATION PC-ARFG-E example Indoor unit number (Refrigerant system-address number) When more than one indoor unit is connected, press " " or " " to show other indoor units. Installed unit number Abnormal operation can be produced due to the following reasons: Malfunction ...
Page 252 TROUBLESHOOTING Power supply failure All the indications are OFF. Once the unit is stopped by the power failure, the unit will not be started again although the power recovers. Perform the starting procedures again. In case of instantaneous power failure within 2 seconds, the unit will be started again automatically. Electrical noise ...
Page 253 TROUBLESHOOTING Code Category Abnormality Cause number Abnormality of fan controller fin Abnormality of fin thermistor or fan controller, heat exchanger clogging, temperature abnormality of fan motor Activation of overcurrent protection Abnormality of fan motor Indoor fan Problem with current sensor Abnormality of fan controller current sensor controller Activation fan controller protection Driver IC error signal detection, instantaneous overcurrent Abnormality of indoor fan controller Indoor voltage decrease, insufficient capacity of power supply wiring voltage...
Page 254 TROUBLESHOOTING Code Category Abnormality Cause number Inverter module abnormality Protection activation of inverter module Failure of compressor, clogging of heat exchanger Inverter Abnormal inverter fin thermistor, clogging of heat exchanger, abnormal Inverter fin temperature increase outdoor fan Inverter Module abnormality Failure of inverter module Abnormal detection of fan motor Abnormal of fan motor position detection circuit, disconnected wiring position Disconnected wire of incorrect wiring between control PCB, and inverter Outdoor fan...
Page 255 TROUBLESHOOTING 21.2.1 SET FREE CH-Box The alarm code is indicated by LED on the CH-Box PCB: LED10 LED11 LED12 LED13 CH-AP(160/280)SSX LED10 LED12 LED11 LED13 CH-AP(04-16)MSSX Alarm code Content of abnormality Abnormal transmission between single branch type CH-Box and outdoor unit. Incorrect wiring, loose terminals, disconnected communication cable, blowout of fuse, indoor unit power OFF. Abnormal transmission between single branch type CH-Box and indoor unit. Incorrect wiring, loose terminals, disconnected communication cable, blowout of fuse, indoor unit power OFF.
Page 256 TROUBLESHOOTING 21.2.2 KPI series 4 and Dx-Interface series 2 The following alarm list is specific for KPI series 4 and DX-kit series 2. These alarm codes are displayed in the 7 segments on PCB2 corresponding to the DX-Interface EXV-(2.0-10.0)E2 or KPI-(E/X)4E, as well as in the 7 segments display located in the PCB of the UTOPIA Outdoor unit (the PCB of SET FREE Outdoor units can display the alarm number depending on the characteristics of the system).
Page 257 MAINTENANCE 22 MAINTENANCE D A N G E R • Turn OFF the power source before the maintenance work. If not, it may cause a fire or an electric shock. • Perform the maintenance work with stable footing. If not, it may cause falling or injury. C A U T I O N When the indoor unit flat panel is opened (closed) or the air filter is attached (removed), perform the work according to the Installation and Operation Manual according to your model unit. If not, it may cause falling or injury.
Page 258 MAINTENANCE For the outdoor unit 1 Compressor Sound and vibration: Check for abnormal sounds and vibrations. Activation: Check that the voltage drop of the power supply line is within 15% at the start and within 2% during the operation. 2 Fan Rotation: Check the counter clockwise (or Clockwise according to de outdoor unit model) rotation and the rotating speed. 3 Reverse valve Activation: Check for any abnormal activation sound.
Page 259 OPTIONAL PARTS FOR UTOPIA SERIES 23 OPTIONAL PARTS FOR UTOPIA SERIES 23.1 ASIGNED MODELS AND QUANTITY RAS-(8/10)HNCE RAS-(4-6)FS(V)NME RAS-3HVRC2 RAS-(4-6)H(V)R(C/P)2E RAS-12HNC RAS-(4-10)XH(V)NP(1)E RAS-(8-12)FSXNME Air flow guide AG-264 60209100 AG-335A 60291431 Wind guard WSP-264 60291831 WSP-335A 60291432 WSP-160A 60291753 Snow protection hood ZINC PLATE ASG-SP10FTB (Half) 60292336...
Page 260 OPTIONAL PARTS FOR UTOPIA SERIES 23.2 AIR FLOW GUIDE 23.2.1 AG-264 Specifications Air discharge direction Upward (downward) left and right Material Weather proof polypropylene resin Color Gray (Mussel code:1.0Y8.5/0.5) Weight 1.7 kg 4 x [M5 (SUS) x 12] + 4 x [M5 (SUS) x 30] Fixing screw Accessories Self-screw 2x [M4 x 13] Self-screw Installation manual “Wind Guard”...
Page 261 OPTIONAL PARTS FOR UTOPIA SERIES 23.2.2 AG-335A Specifications Air discharge direction Upward (downward) left and right Material Weather proof polypropylene resin Color Natural gray Weight 1.9 kg 4 x [M5 (SUS) x 20] Fixing screw Accessories Installation manual “Wind guard” or “Snow protection hood” is not available to Installation restriction install with air flow guide. ...
Page 262 OPTIONAL PARTS FOR UTOPIA SERIES 23.3 WIND GUARD 23.3.1 WSP-264 Specifications Material Galvanized sheet metal + baked painting Color UTOPIA Beige (Mussel code: 2.5Y8/2) Weight 4.0 kg Unit fixing screw 4 x [M5 (SUS) x 30] Accessories Wind guard fixing 10 x [M5 (SUS) x 12] screw Installation manual “Guard net” “Air flow guide” or “Snow protection hood” ...
Page 263 OPTIONAL PARTS FOR UTOPIA SERIES 23.3.2 WSP-335A Specifications Material Galvanized sheet metal + baked painting Color Gray (1.0Y8.5/0.5) Weight 8 kg 4x 7 4 x [M5 (SUS) x 12] Accessories Fixing screw Installation manual “Guard net” “Air flow guide” or “Snow protection hood” Installation restriction is not available to install with Wind guard Installation ...
Page 264 OPTIONAL PARTS FOR UTOPIA SERIES 23.3.3 WSP-160A Specifications Material Galvanized sheet metal + baked painting Color Gray (1.0Y8.5/0.5) Weight 13 kg 12 x [M5 (SUS) x 12], installation manual 2x 7 Accessories Fixing screw 2 wind guards Fixing stay “Guard net” “Air flow guide” or “Snow protection Installation restriction hood” is not available to install with Wind guard. 4x 7 Installation ...
Page 265 OPTIONAL PARTS FOR UTOPIA SERIES 23.4 SNOW PROTECTION HOOD 23.4.1 Air discharge hood ASG-NP335FS4 (Half)(1) ASG-NP335F1 (Half) (1) RAS-(4-6)H(V)R(C/P)2E RAS-(4-6)H(V)R(C/P)2E RAS-(8/10)HNCE RAS-(8/10)HNCE ASG-SP10FTB (Half) (1) ASG-SP10FTBS (Half) (1) ASG-SP11FBS2 (Full) (2) ASG-SP11FB (Full) (2) Product name ASG-SP11FTB (Full) (2) ASG-SP11FTBS (Full) (2) RAS-(4-6)H(V)R(C/P)2E RAS-(4-6)H(V)R(C/P)2E RAS-3HVRC2...
Page 266 OPTIONAL PARTS FOR UTOPIA SERIES ASG-NP335F ASG-NP335FS2 Product name RAS-12HNC RAS-12HNC Stainless Material Bonderized steel sheet (NSSC 180) Color Gray (1.0Y8.5/0.5) — Weight 3 kg Assembling Assembly on site Components For air discharge part x1 Hood Fixing screw 4 x [M5x12] Hood fixing screw (SUS) 6 x [M5x14] 6 x [M5x14] Self-screw Installation with “Air flow guide” or “Wind guard” is not available. Installation restriction Safety wire rope ASG-SW20A (for overturning prevention (optional parts)) φ8...
Page 267 OPTIONAL PARTS FOR UTOPIA SERIES 23.4.2 Rear suction hood ASG-SP10BTB ASG-SP10BTBS ASG-SP10BE ASG-SP10BES2 Product name RAS-3HVRC2 RAS-3HVRC2 RAS-(4-6)H(V)R(C/P)2E RAS-(4-6)H(V)R(C/P)2E Stainless Stainless Material Bonderized steel sheet Bonderized steel sheet (NSSC 180) (NSSC 180) Color Gray (1.0Y8.5/0.5) — Gray (1.0Y8.5/0.5) — Weight 3.9 kg 3.9 kg 11 kg...
Page 268 OPTIONAL PARTS FOR UTOPIA SERIES ASG-NP160B (Half) (1) ASG-NP280BS4 (Half) (1) ASG-SP11BA (Full) (2) ASG-SP11BAS2 (Full) (2) RAS-(8/10)HNCE RAS-(8/10)HNCE ASG-NP335B ASG-NP335BS2 Product name RAS-(4-6)FS(V)NME RAS-(4-6)FS(V)NME RAS-12HNC RAS-12HNC RAS-(4-10)XH(V)NP(1)E RAS-(4-10)XH(V)NP(1)E Stainless Stainless Material Bonderized steel sheet Bonderized steel sheet (NSSC 180) (NSSC 180) Color Gray (1.0Y8.5/0.5)
Page 269 OPTIONAL PARTS FOR UTOPIA SERIES 23.4.3 Left suction hood ASG-SP10LTB ASG-SP10LTBS ASG-SP10LE ASG-SP10LES2 Product name RAS-3HVRC2 RAS-3HVRC2 RAS-(4-6)H(V)R(C/P)2E RAS-(4-6)H(V)R(C/P)2E Stainless Stainless Material Bonderized steel sheet Bonderized steel sheet (NSSC 180) (NSSC 180) Color Gray (1.0Y8.5/0.5) — Gray (1.0Y8.5/0.5) — Weight 2.5 kg 2.5 kg 6.5 kg...
Page 270 OPTIONAL PARTS FOR UTOPIA SERIES ASG-NP160L (Half) (1) ASG-NP280LS4 (Half) (1) ASG-NP335L ASG-NP335LS2 Product name ASG-SP11LA (Full) (2) ASG-SP11LAS2 (Full) (2) RAS-12HNC RAS-12HNC RAS-(8/10)HNCE RAS-(8/10)HNCE Stainless Stainless Material Bonderized steel sheet Bonderized steel sheet (NSSC 180) (NSSC 180) Color Gray (1.0Y8.5/0.5) —...
Page 271 OPTIONAL PARTS FOR UTOPIA SERIES 23.4.4 Assembly of snow protection hood A. Rear side B. Left side C Front side 1 Fixing screw 2 Air inlet hood 3 Wire rope (optional for over turning protection) 4 Air discharge hood 5 Outdoor unit 6 Left suction hood 7 Air discharge grille a ...
Page 272 OPTIONAL PARTS FOR UTOPIA SERIES 1 Left suction hood 2 Fixing screw 3 Rear suction hood upper side 4 Wire rope (optional for over turning protection) 5 Rear suction hood lower side 6 Air discharge hood 7 Air discharge grille 8 Outdoor unit a ...
Page 273 OPTIONAL PARTS FOR UTOPIA SERIES 23.5 DRAIN HEATER 23.5.1 Accessories packed with drain pan heater Part Name Remarks Drain pan heater, fixing plate with thermal fuse, thermo switch, Drain pan heater assy wiring cover and current fuse holder Fixing plate 1 Fixing for drain pan heater Fixing plate 2 Fixing for drain pan heater 2: Mounting for Thermal fuse plate 9: Mounting for fixing plate 1 Mounting screw (M4) 1:Mouting for fixing plate 2 Drill screw (M3.5)
Page 275 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. Ronda Shimizu, 1 - Políg. Ind. Can Torrella 08233 Vacarisses (Barcelona) Spain © Copyright 2022 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. – All rights reserved. Printed in Spain...

This manual is also suitable for:

Ras-4xhnp1eRas-5xhvnp1eRas-5xhnp1eRas-6xhvnp1eRas-6xhnp1eRas-8xhnpe ... Show all

Hitachi RAS-4XHVNP1E Installation & Operation Manual

Quick Links

Need help?

Questions and answers

Related Manuals for Hitachi RAS-4XHVNP1E

Summary of Contents for Hitachi RAS-4XHVNP1E

This manual is also suitable for: