Hitachi YUTAKI R290 Series Installation And Operation Manual
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Hitachi YUTAKI R290 Series Installation And Operation Manual

Hitachi YUTAKI R290 Series Installation And Operation Manual

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INSTALLATION
AND OPERATION
MANUAL
–
YUTAKI MONOBLOC
R290 SERIES
MODELS
OUTDOOR UNITS
YUTAKI MONOBLOC R290: RASM-(2-6)(V)TW2E
INDOOR UNITS - HYDROSPLIT SYSTEM
YUTAKI H: HWM-W2E(-B)
YUTAKI H Combi: HWD-W2E-220S(-K)
INDOOR UNITS - CONTROL BOX SYSTEM
YUTAKI CONTROL BOX: ATW-CBX-01
PMEN0674 rev.0 - 03/2025

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  • Page 1 – INSTALLATION AND OPERATION MANUAL – YUTAKI MONOBLOC R290 SERIES MODELS OUTDOOR UNITS YUTAKI MONOBLOC R290: RASM-(2-6)(V)TW2E INDOOR UNITS - HYDROSPLIT SYSTEM YUTAKI H: HWM-W2E(-B) YUTAKI H Combi: HWD-W2E-220S(-K) INDOOR UNITS - CONTROL BOX SYSTEM YUTAKI CONTROL BOX: ATW-CBX-01 PMEN0674 rev.0 - 03/2025...
  • Page 2 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 inglesa y las versiones traducidas, prevalecerá...
  • Page 3 Версията на английски език е оригиналната; версиите на останалите езици са в превод от английски език. При различие между английската версия и преводна версия на друг език за меродавна се счита английската версия. Originální verze tohoto dokumentu je v angličtině; ostatní jazykové varianty jsou z angličtiny přeložené.
  • Page 4 Izvirna različica je v angleškem jeziku; drugi jeziki so prevedeni iz angleščine. Pri razlikah med angleško in prevedeno različico prevlada angleška različica. Anglická verzia je pôvodná, ďalšie jazyky sú preložené z angličtiny. V prípade akýchkoľvek nezrovnalostí medzi anglickou a preloženou verziou, bude rozhodujúca anglická verzia. Англійська...
  • Page 5 Contents General information ...................... 12 Name of parts and dimensional data ................ 20 Electrical data ......................... 28 Working range ........................ 32 Drain and water piping ....................39 Electrical and control settings..................60 Commissioning ......................98 Maintenance .........................106 ERP performance data ....................118 PMEN0674 rev.0 - 03/2025...

  • Page 6: Table Of Contents

    General Index 1. General information ....................12 1.1 General information ..................13 1.2 Applied symbols....................13 1.3 Product guide ....................15 1.3.1 Classification of the units ..............15 1.3.1.1 Outdoor units ................15 1.3.1.2 Indoor units - Hydrosplit system ..........15 1.3.1.3 Indoor units - Control Box system ..........16 1.4 Product list .......................17 1.4.1 Outdoor units ..................17 1.4.2 Indoor units - Hydrosplit system ............18 1.4.3 Indoor units - Control Box system ............19...
  • Page 7 3. Electrical data ......................28 3.1 Considerations ....................29 3.2 Outdoor units ....................30 3.2.1 YUTAKI Monobloc R290 - RASM-(2-6)(V)TW2E ........30 3.3 Indoor units - Hydrosplit system ..............30 3.3.1 YUTAKI H - HWM-W2E(-B)..............30 3.3.2 YUTAKI H Combi - HWD-W2E-220S(-K) ..........31 3.4 Indoor units - Control Box system ..............31 3.4.1 YUTAKI Control Box - ATW-CBX-01 ............31 3.5 Indoor units - Complementary system ............31 3.5.1 YUTAKI Cascade Controller - ATW-YCC-04 ..........31...
  • Page 8 5.2 Outdoor unit draining operation ..............42 5.3 Indoor unit draining operation ................42 5.3.1 Draining operation for YUTAKI H ............42 5.3.2 Draining operation for YUTAKI H Combi ..........42 5.4 Hydraulic connections ..................44 5.4.1 Hydrosplit system - YUTAKI Monobloc R290 + YUTAKI H.......44 5.4.2 Hydrosplit system - YUTAKI Monobloc R290 + YUTAKI H Combi ...45 5.4.3 Control Box system - YUTAKI Monobloc R290 + YUTAKI Control Box ..45 5.5 Parts name list ....................46 5.6 Space heating and DHW for YUTAKI Hydrosplit ..........47...
  • Page 9 6.1 General check ....................61 6.2 Electrical connection ..................63 6.2.1 System wiring diagram ................64 6.2.2 Transmission wiring between outdoor and indoor units ......65 6.2.3 Outdoor units power wiring connection ..........67 6.2.4 Indoor units power wiring connection ..........68 6.2.5 Unit controller (PC-ARFH3E) connection ..........69 6.2.6 Optional accessories connection ............69 6.3 Wiring size and protection devices minimum requirements ......70 6.3.1 Outdoor units ..................70 6.3.2 Indoor units - Hydrosplit system ............71...
  • Page 10 7.2.1 Retirement of T-blocks and installation of base caps ......99 7.2.2 Checking the unit .................100 7.2.3 Electrical checking ................100 7.2.4 Hydraulic circuit checking (space heating and DHW) ......101 7.2.5 Test and check ..................101 7.3 Commissioning procedure ................102 7.3.1 Commissioning from unit controller ...........103 7.3.1.1 Screed drying function ............105 7.3.2 NFC Tap Function .................105 8. Maintenance ......................106...
  • Page 11 9. ERP performance data ....................118 9.1 General ERP data for space heaters ..............119 9.1.1 ERP data ....................119 9.1.1.1 YUTAKI Monobloc R290 + YUTAKI H / YUTAKI H Combi / YUTAKI Control Box ..............119 9.1.2 ERP additional data ................121 9.1.2.1 YUTAKI Monobloc R290 + YUTAKI H / YUTAKI H Combi / YUTAKI Control Box ..............121 9.2 General ERP data for combi heaters .............121 9.2.1 YUTAKI Monobloc R290 + YUTAKI H Combi ........121...

  • Page 12: General Information

    General information 1.1 General information ..................13 1.2 Applied symbols....................13 1.3 Product guide ....................15 1.3.1 Classification of the units ..............15 1.4 Product list .......................17 1.4.1 Outdoor units ..................17 1.4.2 Indoor units - Hydrosplit system ............18 1.4.3 Indoor units - Control Box system ............19 PMEN0674 rev.0 - 03/2025...

  • Page 13: General Information

    This document may therefore have been subject to amendments during the life of the product. Hitachi makes every effort to offer correct, up-to-date documentation. Despite this, printing errors cannot be controlled by Hitachi and are not its responsibility.
  • Page 14 In the texts following the danger symbol you can also find information on safety procedures during unit installation. CAUTION • The text following this symbol contains information and instructions relating directly to your safety, in addition to hazards or unsafe practices which could result in minor personal injury or product or property damage.

  • Page 15: Product Guide

    1.3 Product guide 1.3.1 Classification of the units 1.3.1.1 Outdoor units    ‹ YUTAKI Monobloc R290 - RASM-(2-6)(V)TW2E Unit type: YUTAKI Monobloc R290 (Outdoor unit) Position-separating hyphen (fixed) System capacity (HP): 2, 3, 3.5, 4, 5, 6 V: Single phase unit (~ 230 V 50 Hz) —: Three phase unit (3N~ 400 V 50 Hz) R290 refrigerant W: Hydrosplit system...

  • Page 16: Indoor Units - Control Box System

    1.3.1.3 Indoor units - Control Box system    ‹ YUTAKI Control Box - ATW-CBX-01 Air-to-water Position-separating hyphen (fixed) Remote control box Position-separating hyphen (fixed) Series 01 PMEN0674 rev.0 - 03/2025...

  • Page 17: Product List

    1.4 Product list Icons between brackets mean possible extra operations to the factory-supplied operations (additional accessories, field-supplied accessories or systems can be needed). Heating operation Additional heater (electrical heater accessory) Domestic Hot Water (DHW) UK market Swimming pool application Cooling operation Solar combination Boiler combination Integrated Wi-Fi...

  • Page 18: Indoor Units - Hydrosplit System

    1.4.2 Indoor units - Hydrosplit system    ‹ YUTAKI H - HWM-W2E(-B) Standard model ( )( )( )( ) Model Power supply Remarks Picture ~ 230 V 50 Hz Wall mounted indoor units for Hydrosplit air-to- HWM-W2E water heat pump system with electrical heater (6 kW) 3N~ 400 V 50 Hz Model for boiler combination ( )( )( )( )( )

  • Page 19: Indoor Units - Control Box System

    Model for UK market ( )( )( ) Model Power supply Remarks Picture Floor standing indoor units with integrated 220 L ~ 230 V 50 Hz HWD-W2E- DHW tank (UK version) for Hydrosplit air-to-water 220S-K 3N~ 400 V 50 Hz heat pump system 1.4.3 Indoor units - Control Box system   ...

  • Page 20: Name Of Parts And Dimensional Data

    Name of parts and dimensional data 2.1 Outdoor units ....................21 2.1.1 YUTAKI Monobloc R290 - RASM-(2-3.5)VTW2E........21 2.1.2 YUTAKI Monobloc R290 - RASM-(4-6)(V)TW2E ........22 2.2 Indoor units - Hydrosplit system ..............23 2.2.1 YUTAKI H - HWM-W2E ................23 2.2.2 YUTAKI H - HWM-W2E-B ................24 2.2.3 YUTAKI H Combi - HWD-W2E-220S ............25 2.2.4 YUTAKI H Combi - HWD-W2E-220S-K ............26 2.3 Indoor units - Control Box system ..............27 2.3.1 YUTAKI Control Box - ATW-CBX-01 ............27...

  • Page 21: Outdoor Units

    2.1 Outdoor units 2.1.1 YUTAKI Monobloc R290 - RASM-(2-3.5)VTW2E Compressor Water side heat exchanger Air side exchanger Degasser Electrical box Expansion valve Reversing valve Solenoid valve (SVA) Safety valve (2.5 Bar) Water pump Receiver High pressure switch (HPS) Water outlet (1”) Water inlet (1”) Compressor heater Service valve...

  • Page 22: Yutaki Monobloc R290 - Rasm-(4-6)(V)Tw2E

    2.1.2 YUTAKI Monobloc R290 - RASM-(4-6)(V)TW2E Compressor Water side heat exchanger Air side exchanger Degasser Electrical box Expansion valve Reversing valve Solenoid valve (SVA) Safety valve (2.5 Bar) Water pump Receiver High pressure switch (HPS) Water outlet (1”) Water inlet (1”) Compressor heater Service valve Water pressure sensor...

  • Page 23: Indoor Units - Hydrosplit System

    2.2 Indoor units - Hydrosplit system 2.2.1 YUTAKI H - HWM-W2E Side view Front view Water pump Electric water heater Expansion vessel (6 L) Water strainer Air purger Hydraulic separator and buffer tank Manometer Unit controller Electrical box Switch for DHW emergency operation Space inlet pipe connection (G 1”...

  • Page 24: Yutaki H - Hwm-W2E-B

    2.2.2 YUTAKI H - HWM-W2E-B Side view Front view Water pump IOT gateway Expansion vessel (6 L) Water strainer Air purger Hydraulic separator and buffer tank Manometer Unit controller Electrical box Switch for DHW emergency operation NOTE Space inlet pipe connection (G 1” female) Water flow direction Space outlet pipe connection - (G 1”...

  • Page 25: Yutaki H Combi - Hwd-W2E-220S

    2.2.3 YUTAKI H Combi - HWD-W2E-220S Water pump Electric water heater Expansion vessel (6 L) Water strainer Air purger (x2) View from A Drain port (for unit) (G 3/8”) IOT gateway Hydraulic separator and buffer tank 3-way valve (for space heating and DHW) Electrical box Switch for DHW emergency operation Front view...

  • Page 26: Yutaki H Combi - Hwd-W2E-220S-K

    2.2.4 YUTAKI H Combi - HWD-W2E-220S-K Water pump Electric water heater Expansion vessel (6 L) Water strainer Air purger (x2) Pressure and temperature valve (for UK models only) View from A IOT gateway Hydraulic separator and buffer tank 3-way valve (for space heating and DHW) Electrical box Switch for DHW emergency operation Front view...

  • Page 27: Indoor Units - Control Box System

    2.3 Indoor units - Control Box system 2.3.1 YUTAKI Control Box - ATW-CBX-01 Units: mm Electrical box Service cover Terminal Board (TB1) LCD unit controller assembly holes (x2) LCD unit controller routing hole Terminal Board (TB2) Wall mounting holes (x4) Relay (AR1) Fuse (EF1) and fuse holder Service cover assembly hooks (x2) Switch for DHW emergency operation...

  • Page 28: Electrical Data

    Electrical data 3.1 Considerations ....................29 3.2 Outdoor units ....................30 3.2.1 YUTAKI Monobloc R290 - RASM-(2-6)(V)TW2E ........30 3.3 Indoor units - Hydrosplit system ..............30 3.3.1 YUTAKI H - HWM-W2E(-B)..............30 3.3.2 YUTAKI H Combi - HWD-W2E-220S(-K) ..........31 3.4 Indoor units - Control Box system ..............31 3.4.1 YUTAKI Control Box - ATW-CBX-01 ............31 3.5 Indoor units - Complementary system ............31 3.5.1 YUTAKI Cascade Controller - ATW-YCC-04 ..........31...
  • Page 29 » Unit capacity: 100% at maximum operating conditions. • The power supply cables must be sized to cover this maximum current value. • Specifications in these tables are subject to change without notice in order that Hitachi may bring the latest innovations to their customers.

  • Page 30: Outdoor Units

    3.2 Outdoor units 3.2.1 YUTAKI Monobloc R290 - RASM-(2-6)(V)TW2E Compressor and fan motors Applicable voltage Heating Cooling Max. IPT Model Power supply (kW) U max. U min. (kW) (kW) RASM-2VTW2E 13.5 2.64 13.5 2.64 14.2 2.88 RASM-3VTW2E 3.32 3.32 17.7 3.61 RASM-3.5VTW2E 3.91 3.91...
  • Page 31 3.3.2 YUTAKI H Combi - HWD-W2E-220S(-K) Applicable voltage Max. Power Operation mode Model supply (kW) (kW) max. min. Without electric heater 0.08 0.65 0.08 With electric heater 26.7 6.08 26.7 6.08 ~ 230 V 50 Hz With DHW tank heater 12.6 2.83 12.6 2.83...
  • Page 32 Working range 4.1 Power supply working range ................33 4.2 Temperature working range ................33 4.2.1 Space heating ..................34 4.2.2 DHW .......................34 4.2.3 Swimming pool heating .................35 4.2.4 Space cooling (necessary cooling kit) ............35 4.3 R290 hydraulic working range .................36 4.3.1 Hydraulic data ..................36 4.3.2 Minimum installation water volume .............36 4.3.3 Pump performance curves ..............37 PMEN0674 rev.0 - 03/2025...
  • Page 33 4.1 Power supply working range    ◆ Nominal power supply • Single phase: ~ 230 V 50 Hz • Three phase: 3N~ 400 V 50 Hz    ◆ Operating voltage Between 90% and 110% of the nominal voltage.    ◆ Voltage imbalance for nominal power supply 3N~ 400 V 50 Hz Up to 3% of each phase, measured at the main terminal of the outdoor unit.

  • Page 34: Space Heating

    4.2.1 Space heating Continuous working range Heat pump operation possible Start up only Ambient temperature (°C) 4.2.2 DHW Continuous working range Heat pump operation possible Tank heater only Ambient temperature (°C) NOTE In case of heating up the DHW tank with an outdoor ambient temperature lower than -5°C and without using the DHW electrical heater, the setting temperature will change automatically in order to not exceed the maximum value in the specified continuous working range.

  • Page 35: Swimming Pool Heating

    4.2.3 Swimming pool heating Continuous working range Heat pump operation possible Ambient temperature (°C) 4.2.4 Space cooling (necessary cooling kit) Continuous working range Refreshing floor working area Fan coil working area Ambient temperature (°C) PMEN0674 rev.0 - 03/2025...

  • Page 36: Hydraulic Data

    4.3 R290 hydraulic working range 4.3.1 Hydraulic data    ◆ Outdoor unit - Control Box system / Hydrosplit system MODEL 2.0 HP 3.0 HP 3.5 HP 4.0 HP 5.0 HP 6.0 HP Minimum water flow rate (*1) Maximum water flow rate (*1) Minimum allowable water pressure (*2) Maximum allowable water pressure (*2) 0.25...

  • Page 37: Pump Performance Curves

       ◆ Control Box system - YUTAKI Monobloc R290 + YUTAKI Control Box MODEL 2.0 HP 3.0 HP 3.5 HP 4.0 HP 5.0 HP 6.0 HP Minimum installation water volume Equivalent radiant floor area (*1) Equivalent radiator number (*2) (*1): Estimated radiant floor surface to accomplish minimum installation water volume requirement considering 16 mm diameter with 200 mm of spacing (1 L equals to 1 m (*2): Estimated number of radiators considering aluminium radiator of 80 mm spacing with 600 mm height and 1000 mm length (1 radiator equals to 4.7 L).
  • Page 38    ◆ Indoor units - Hydrosplit system Use the following curves to size the installation between the indoor unit and the final heating/ cooling appliances: YUTAKI H YUTAKI H Combi 8.00 8.00 7.00 7.00 6.00 6.00 5.00 5.00 4.00 4.00 3.00 3.00 2.00...
  • Page 39 Drain and water piping 5.1 Water drain discharge connection (accessory) ..........41 5.1.1 Connecting procedure ................41 5.2 Outdoor unit draining operation ..............42 5.3 Indoor unit draining operation ................42 5.3.1 Draining operation for YUTAKI H ............42 5.3.2 Draining operation for YUTAKI H Combi ..........42 5.4 Hydraulic connections ..................44 5.4.1 Hydrosplit system - YUTAKI Monobloc R290 + YUTAKI H.......44 5.4.2 Hydrosplit system - YUTAKI Monobloc R290 + YUTAKI H Combi ...45 5.4.3 Control Box system - YUTAKI Monobloc R290 + YUTAKI Control Box ..45...
  • Page 40 5.7.3 Water piping size ...................58 5.7.4 Water piping suspension ...............59 PMEN0674 rev.0 - 03/2025...

  • Page 41: Water Drain Discharge Connection (Accessory)

    5.1 Water drain discharge connection (accessory) 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 DBS-26 5.1.1 Connecting procedure 1 Insert the plastic cap into the drain boss up to the extruded portions.

  • Page 42: Outdoor Unit Draining Operation

    5.2 Outdoor unit draining operation YUTAKI Monobloc has no drain port factory supplied. It is highly recommended to install a drain port valve attached to the water outlet of the YUTAKI Monobloc unit in order to ease the operation of draining. When the drain port is installed the draining procedure for the YUTAKI Monobloc follows the next steps: 1 Switch OFF the main power of the unit.
  • Page 43    ◆ Draining of the DHW circuit 1 Switch OFF the main power supply of the indoor unit. 2 Close the main DHW inlet valve (water inlet shutdown valve) in order to avoid the tank filling. 3 Open the shutdown valve of the DHW outlet to allow draining without creating a vacuum. Ensure that valve at the highest level of the DHW system is also opened.

  • Page 44: Hydraulic Connections

    5.4 Hydraulic connections 5.4.1 Hydrosplit system - YUTAKI Monobloc R290 + YUTAKI H Standard model YUTAKI H YUTAKI Monobloc R290 Model for boiler combination BOILER YUTAKI H YUTAKI Monobloc R290 PMEN0674 rev.0 - 03/2025...

  • Page 45: Hydrosplit System - Yutaki Monobloc R290 + Yutaki H Combi

    5.4.2 Hydrosplit system - YUTAKI Monobloc R290 + YUTAKI H Combi YUTAKI Monobloc R290 YUTAKI H COMBI 5.4.3 Control Box system - YUTAKI Monobloc R290 + YUTAKI Control Box YUTAKI Monobloc R290 PMEN0674 rev.0 - 03/2025...

  • Page 46: Parts Name List

    5.5 Parts name list Item Nature Part Name Piping connections YUTAKI Monobloc water outlet Piping connections YUTAKI Monobloc water inlet Piping connections Hydrosplit water inlet from YUTAKI Monobloc Piping connections Hydrosplit water oulet to YUTAKI Monobloc Piping connections DHW coil inlet Piping connections DHW coil outlet Piping connections...

  • Page 47: Space Heating And Dhw For Yutaki Hydrosplit

    5.6 Space heating and DHW for YUTAKI Hydrosplit DANGER Do not connect the power supply to the indoor unit prior to filling the space heating and DHW circuits with water and checking water pressure and the total absence of any water leakage. 5.6.1 Additional hydraulic necessary elements for space heating Type Nº...
  • Page 48    ◆ YUTAKI H (version with remote tank) Type Nº Part name Water inlet (space heating) Water outlet (space heating) Heating coil inlet Piping connections Heating coil outlet Water inlet (DHW) Water outlet (DHW) Shutdown valve Factory (field-supplied for Control Box supplied system) Domestic hot water tank...

  • Page 49: Additional Hydraulic Optional Elements For Dhw

    5.6.3 Additional hydraulic optional elements for DHW In case of a recirculation circuit for the DHW circuit: Type Nº Part name Water inlet (DHW) Piping connections Water outlet (DHW) Water check valve Accessories (ATW-WCV-01 accessory) Water pump Field supplied Shutdown valve 5.6.4 Additional hydraulic necessary elements for DHW (UK market) Only for those models designed for the UK market: Type...

  • Page 50: Requirements And Recommendations For The Hydraulic Circuit

    5.6.5 Requirements and recommendations for the hydraulic circuit • The maximum piping length depends on the maximum pressure availability in the water outlet pipe. Please check the pump curves “4.3.3 Pump performance curves”. • When the unit is stopped during shutdown periods and the ambient temperature is very low, the water inside the pipes and the circulating pump may freeze, thus damaging the pipes and the water pump.

  • Page 51: Anti-Freezing Protection For Water Circuit

    5.6.6 Anti-freezing protection for water circuit Frost can damage the system. To prevent components from freezing, software has been designed with special frost protection functions, that include the activation of pump and heater in case of low temperatures (see Service Manual Water pump control). In case of a power supply failure, functions above cannot guarantee protection, allowing freezing and possible breakage of pipes and / or components.
  • Page 52 On graphics below, required concentration depending on outside temperature is shown: Frost protection % Volume propylene glycol coolant Burst point according to Frost protection Freezing point according to ASTM D1177 DIN51583 Frost protection % Volume propylene glycol coolant Burst point according to Frost protection Freezing point according to ASTM D1177 DIN51583...
  • Page 53 CAUTION • Do not add glycol that has been exposed to air as glycol absorbs water from the environment. Final glycol concentration can be lower than expected, allowing system to freeze up. • Corrosion, that can damage gravely the system, is possible when glycol is added. Uninhibited glycol with oxygen can become acidic and attack metal surfaces, forming galvanic corrosion cells.

  • Page 54: Insulation

    5.6.7 Insulation Water circuit piping must be insulated to prevent condensation and to reduce heat loss. For outdoor water piping, recommended insulation thickness depends on piping length. Recommended thickness values for an insulation of ʎ=0.039 W/mK are shown in table below. Check to ensure that installation (thickness, insulating material, etc) already complies with the national and local regulations.
  • Page 55 b. Automatic: Select the air purge function using the user controller. When the automatic air purge function is running, the pump speed and the position of the 3-way valve (space heating or DHW) are automatically changed: Repeat... Water pump Seconds Repeat...

  • Page 56: Water Quality

    Using filling water that does not meet the stated quality requirements can cause a considerably reduction in service life. The responsibility will be out of Hitachi warranties. The following are the water quality minimum requirements:...

  • Page 57: Water Piping

    As DHW tank water is being used for storing drinking water, this water has to be in accordance with national regulations and Hitachi’s quality minimum requirements. The use of softeners, active anodes or others protective systems will not bring a derogation from Hitachi’s provided warranty. 5.7 Water piping 5.7.1 Water piping length...

  • Page 58: Water Piping Location

    5.7.2 Water piping location The unit is factory supplied with two unions to be connected to the water inlet/outlet pipe. Refer to the next figure detailing the location of the water pipes location. Water inlet Water outlet 5.7.3 Water piping size    ◆ YUTAKI Monobloc R290 - RASM-(2-6)(V)TW2E (inches) Heat pump pipes connection Outlet...
  • Page 59    ◆ YUTAKI H Combi - HWD-W2E-220S(-K) (inches) Heat pump pipes connection Space heating pipes connection Domestic hot water tank pipes connection Pressure and Shutdown Shutdown Shutdown Temperature Outlet Outlet Outlet Inlet Inlet Inlet valves valves valves (*) relief valve (**) G 1”...
  • Page 60 Electrical and control settings 6.1 General check ....................61 6.2 Electrical connection ..................63 6.2.1 System wiring diagram ................64 6.2.2 Transmission wiring between outdoor and indoor units ......65 6.2.3 Outdoor units power wiring connection ..........67 6.2.4 Indoor units power wiring connection ..........68 6.2.5 Unit controller (PC-ARFH3E) connection ..........69 6.2.6 Optional accessories connection ............69 6.3 Wiring size and protection devices minimum requirements ......70 6.3.1 Outdoor units ..................70...

  • Page 61: General Check

    6.1 General check Make sure that the following conditions related to power supply installation are satisfied: • The power capacity of the electrical installation is large enough to support the power demand of the YUTAKI system (outdoor unit + indoor unit + DHW tank (if apply)). •...
  • Page 62    ◆ Indoor units - Hydrosplit system NOTE The use of the DHW tank heater is disabled as factory setting. If it is desired to enable the DHW tank heater operation during normal indoor unit operation, adjust the DSW4 pin 3 of the indoor unit PCB to the ON position and use the adequate protections.

  • Page 63: Electrical Connection

    6.2 Electrical connection    ◆ Safety instructions NOTE • Check the requirements and recommendations in chapter “6.3 Wiring size and protection devices minimum requirements”. • The torque for the tightening of the screws of each Terminal board is explained in the table below: Terminal board Tightening torque (N·m)

  • Page 64: System Wiring Diagram

    • Keep a distance between each wiring terminal and attach insulation tape or sleeve as shown in the figure. Tape or sleeve 6.2.1 System wiring diagram Connect the units according to the following electric diagram: : Terminal board : Field wiring CB : Circuit breaker : Field-supplied ELB : Earth leakage breaker...

  • Page 65: Transmission Wiring Between Outdoor And Indoor Units

    6.2.2 Transmission wiring between outdoor and indoor units    ◆ H-LINK connector assembly 1 Prepare a 2-wires cable: ✓ Use twist pair wires (0.75 mm²) for operation wiring between outdoor unit and indoor unit. The wiring must consist of 2-core wires (do not use wire with more than 3 cores). ✓...
  • Page 66    ◆ Connection with indoor unit The connection to the indoor unit is performed bolting the free endings of each wire to the Terminal Board 2 (TB2)as indicated in the picture (no polarity is to be considered) and the shield to the ground: Indoor unit Control cable (5 V)

  • Page 67: Outdoor Units Power Wiring Connection

    6.2.3 Outdoor units power wiring connection    ◆ Power connectors assembly 1 Prepare a 3-wires (single-phase units) or 5-wires (three-phase units) cable (see section “6.3 Wiring size and protection devices minimum requirements”). 2 Stripe 26.5 mm of the sheath and 8 mm of each wire: 8 mm 8 mm 26.5 mm...

  • Page 68: Indoor Units Power Wiring Connection

       ◆ Connection with outdoor unit Connect the power connector coming from the power supply to its counterpart in the outdoor unit (below, in the rear). Outdoor unit (integrated connector) Outdoor unit (integrated connector) YUTAKI Monobloc R290 YUTAKI Monobloc R290 Indoor unit (terminal board 2) Indoor unit (terminal board 2) YUTAKI H / H Combi / Control Box...

  • Page 69: Unit Controller (Pc-Arfh3E) Connection

    NOTE In the case of a single-phase power supply, use the power connection bridge attached in the accessory bag, following these instructions:    ◆ YUTAKI Control Box Single-phase power supply Indoor unit (TB1) (~ 230 V 50 Hz) L1 N Single-phase grid connection 6.2.5 Unit controller (PC-ARFH3E) connection Connection for the Unit controller PC-ARFH3E should be done on the Terminal Board 2 (TB2) as...

  • Page 70: Wiring Size And Protection Devices Minimum Requirements

    6.3 Wiring size and protection devices minimum requirements CAUTION • Check to ensure that the field supplied electrical components (mains power switches, circuit breakers, wires, connectors and wire terminals) have been properly selected according to the electrical data indicated on this chapter and they comply with national and local codes. If it is necessary, contact with your local authority in regards to standards, rules, regulations, etc.

  • Page 71: Indoor Units - Hydrosplit System

    6.3.2 Indoor units - Hydrosplit system    ◆ YUTAKI H - HWM-W2E(-B) Power supply cables Transmitting (nº of Power Actuator Operation mode Model current supply cables cables poles/A/ EN 60335-1 Without electric heaters 2 x 0.75 mm ² + GND With electric heater 26.7 2 x 6.0 mm ²...

  • Page 72: Indoor Units - Control Box System

    6.3.3 Indoor units - Control Box system    ◆ YUTAKI Control Box - ATW-CBX-01 Power supply Transmitting cables cables Power supply Operation mode Current (nº of poles/A/mA) EN 60335-1 EN 60335-1 2 x 0.75 mm ~230 V 50 Hz 2 x 0.75 mm 2/40/30 With DHW Tank 2 x 4 mm...

  • Page 73: Function Of Dip Switches And Rotary Switches

    YUTAKI H, YUTAKI H Combi, YUTAKI Control Box Water cycle 6.4.2 Function of DIP switches and rotary switches NOTE • The mark “” indicates the position of DIP switches. • No mark “” indicates pin position is not affecting. • The figures show the settings before shipment or after selection. •...
  • Page 74 6.4.2.1 Refrigerant cycle PCB (outdoor unit, PCB1)    ◆ DSW1 Test run mode Function DSW1 setting Factory setting NOTE • This operation is reset once the compressor is in Thermo-ON mode. • During the test run operation the units will operate continuously during 2 hours without Thermo-OFF and the 3 minutes guard for compressor protection will be effective.
  • Page 75 NOTE In case of replacing the PCB1 with a new spare unit, the following settings must be taken into account to properly characterise the outdoor unit in which it is to be installed. DSW3 setting Outdoor unit RASM-2VTW2E RASM-3VTW2E RASM-3.5VTW2E RASM-4VTW2E RASM-5VTW2E RASM-6TW2E...

  • Page 76: Terminal Resistance

       ◆ DSW5 Terminal resistance NOTE This setting is necessary when combining more than one unit in the same H-LINK in a system with ATW-YCC-04. Function DSW5 setting Factory setting    ◆ DSW6 Function selection Function DSW6 setting Factory setting   ...
  • Page 77 6.4.2.2 Water cycle PCB (indoor unit)    ◆ DSW1 Indoor unit type setting DSW1 setting Indoor unit YUTAKI H - HWM-W2E(-B) YUTAKI H Combi - HWD-W2E-220S(-K) YUTAKI Control Box - ATW-CBX-01 Enable cooling operation Function DSW1 setting Cooling operation setting (in case of installing the cooling kit accessory) PMEN0674 rev.0 - 03/2025...

  • Page 78: Additional Setting

       ◆ DSW2 (setting required) Unit capacity setting Outdoor units Function DSW2 setting Capacity Models Factory setting RASM-2VTW2E RASM-3VTW2E RASM-3.5VTW2E Setting required for combination with RASM-4(V)TW2E RASM-5(V)TW2E RASM-6(V)TW2E    ◆ DSW3 Additional setting 1 Function DSW3 setting Factory setting 1 step heater for 3 phase unit option PMEN0674 rev.0 - 03/2025...
  • Page 79    ◆ DSW4 Additional setting 2 Function DSW4 setting Factory setting (except for HWM-W2E-B) DHW defrost Heater forced OFF (HWM-W2E-B factory setting) Unit and installation pipes antifreeze protection Standard / ECO water pump operation Electric heater or boiler emergency mode DHW tank’s heater operation DHW 3 way valve forced ON CAUTION...
  • Page 80    ◆ DSW5 Additional setting 3 In the cases where the outdoor unit is installed into a location where its own outdoor ambient temperature sensor cannot give a suitable temperature measurement to the system, it is available the 2nd outdoor ambient temperature sensor as accessory. By means of DSW5 setting, the preferable sensor for each circuit (C1 or C2) can be selected.
  • Page 81    ◆ DSW7 Additional setting 4 Function DSW7 setting Factory setting Compatibility with ATW-RTU-04 (when cooling mode operation is needed)    ◆ DSW15 / RSW2 Refrigerant cycle address Function DSW15 setting RSW2 setting Factory setting Example of system setting with a value of: 5 Refrigerant cycle address setting (required only when YUTAKI Cascade Controller is installed)   ...
  • Page 82    ◆ SSW1 Remote/Local Function SSW1 setting REMOTE Factory setting LOCAL    ◆ SSW2 Heat/Cool Function SSW2 setting HEAT Factory setting COOL    ◆ LED indication Name Indication Colour LED1 Green Power indication LED2 Power indication LED3 Heat pump operation (Thermo ON/OFF) LED4 Alarm (flickering with 1 sec interval) Yellow...

  • Page 83: Optional Indoor Unit Wiring (Accessories)

    6.5 Optional indoor unit wiring (accessories) 6.5.1 Summary of the terminal board connections    ◆ YUTAKI H - HWM-W2E(-B) Part name Description Mark TERMINAL BOARD 1 (TB1) ~ 230 V 50 Hz Main power supply connection TERMINAL BOARD 2 (TB2) H-LINK communication The H-LINK transmission has to be done between the indoor unit and the terminals 1-2 of either outdoor unit, ATW-RTU or any other central device.
  • Page 84 Part name Description Mark For the connection of an external tariff switch device to switch OFF the heat pump during peak electricity demand period. Depending on the setting, the heat pump or DHWT will be blocked Input 5 (Smart function) (*) when signal is open/closed.
  • Page 85    ◆ YUTAKI H Combi - HWD-W2E-220S(-K) Part name Description Mark TERMINAL BOARD 1 (TB1) ~ 230 V 50 Hz Main power supply connection TERMINAL BOARD 2 (TB2) H-LINK communication The H-LINK transmission has to be done between the indoor unit and the terminals 1-2 of either outdoor unit, ATW-RTU or any other central device. H-LINK communication for remote control switch Terminals for the connection of the YUTAKI unit controller.
  • Page 86 Part name Description Mark The measuring of the real power consumption can be done connecting an external power meter. The number of pulses of the power meter is a variable which must be set. By this, every pulse input is added into corresponding operation mode (Heating, Cooling, DHW Operation).
  • Page 87    ◆ YUTAKI Control Box - ATW-CBX-01 Part name Description Mark TERMINAL BOARD 2 (TB2) The H-LINK transmission has to be done between the Control Box and the outdoor unit. Additionally, it can also be done between the Control Box and the ATW-RTU, the Cascade Controller or any other H-LINK communication central device.
  • Page 88 Part name Description Mark 27(L) Water Pump 2 (WP2) When there is a second temperature application, a secondary pump is the circulating pump for the secondary heating circuit. Auxiliary power Power supply for ATW-RTU and central device 30(N) Electrical Heater DHW Output If DHW tank contains an electric heater, the air to water heat pump can activate it if the heat pump cannot achieve the required DHW temperature by itself.

  • Page 89: Input Terminals (Default Input Functions)

    6.5.2 Input terminals (default input functions)    ◆ Room thermostat communication cables There are two different room thermostat types as accessory: Optional wireless intelligent room thermostat (TB2) ATW-RTU Only for wireless room thermostat accessory: the receiver is connected to the polarity-free terminals 1 and 2.
  • Page 90 Common Line Demand ON/OFF Receiver input 2 Thermostat requirements: Power supply: 230 VAC Contact voltage: 230 V NOTE • If wireless intelligent thermostat is selected, optional ON/OFF thermostat has no effect. • Set the configuration in the user’s control. • In case of setting an installation with 2 circuits (Circuit 1 and Circuit 2) and a different Demand ON/OFF is used for each of them, please refer to “6.5.2 Input terminals (default input functions)”...
  • Page 91    ◆ DHWT Thermistor (TDHWT) For those cases in which a tank is installed as accessory, a thermistor must be installed to control the water temperature. The connection for this thermistor must be done between terminals 5 and 6 of the terminal board 2 (not available for HWD-W2E-220S(-K). TDHWT (DHWT) HWM-W2E...
  • Page 92    ◆ Swimming pool water temperature thermistor (TSWP) To control the swimming pool temperature. The thermistor should be positioned inside plate heat exchanger of the swimming pool and have to be connected between terminals 9 and 10 of the terminal board 2. (AuxSensor2)   ...
  • Page 93    ◆ Swimming pool (default for input 3) When it is necessary to control the temperature of the swimming pool water, a connection between the heat pump and the corresponding sensor must be done on terminals 16 and 17 at the terminal board (input 4).
  • Page 94    ◆ DHW boost (default for input 6) This function allows a request for a one-time heating up of the domestic hot water temperature. The input can be sent by a push button, a NC contact and a NO contact. This input is switched on terminals 16 and 20 of the terminal board 2.

  • Page 95: Output Terminals (Default Output Functions)

    DHW temperature by itself. Electrical Heater ≤ 3 kW DHW Tank (EH CAUTION When using a DHW tank other than those from Hitachi, the maximum connectable heater load is 3 kW (connected to TB2 terminals 30-31). PMEN0674 rev.0 - 03/2025...

  • Page 96: Output Terminals (Optional Output Functions)

       ◆ Output 9 This output has no pre-set configuration. By means of the LCD it can be configured with any of the options offered inside I/O and sensor menu. HWD-W2E-220S(-K)    ◆ 3 way valve for DHW tank output YUTAKI units can be used to heat DHW.
  • Page 97    ◆ Water pump 3 (default for output 2) When the boiler is configured with the heat pump or needs an additional pump for the system, a hydraulic separator or buffer tank must be used to ensure a correct hydraulic balance Water pump III (output 2)   ...
  • Page 98 Commissioning 7.1 Before operation ....................99 7.2 Preliminary check ....................99 7.2.1 Retirement of T-blocks and installation of base caps ......99 7.2.2 Checking the unit .................100 7.2.3 Electrical checking ................100 7.2.4 Hydraulic circuit checking (space heating and DHW) ......101 7.2.5 Test and check ..................101 7.3 Commissioning procedure ................102 7.3.1 Commissioning from unit controller ...........103 7.3.2 NFC Tap Function .................105 PMEN0674 rev.0 - 03/2025...

  • Page 99: Before Operation

    7.1 Before operation CAUTION • Supply electrical power to the system for approximately 12 hours before start-up after a long shut-off. Do not start the system immediately after power supply, it may cause compressor failure because the compressor is not well-heated. •...

  • Page 100: Checking The Unit

    2 Insert the Base Caps: a. Align the four base caps with the holes of the base where the T-blocks were removed. b. Press each base cap into place to secure it. 7.2.2 Checking the unit • Check external appearance of the unit to look for any damage due to transportation or installation.

  • Page 101: Hydraulic Circuit Checking (Space Heating And Dhw)

    • Check to ensure the electrical wiring of the unit is connected as indicated in the Instruction Manual. • Check to ensure the external wiring is correctly fixed. To avoid problems with vibrations, noises and cut out wires with the plates. 7.2.4 Hydraulic circuit checking (space heating and DHW) •...

  • Page 102: Commissioning Procedure

    7.3 Commissioning procedure This procedure is valid regardless of what options are on the module. • Make the start-up wizard configuration in the user controller. • Make a test run as shown in item “7.3.1 Commissioning from unit controller”. • After test run is completed, start the entire unit or the selected circuit by pressing the OK button. ‹...

  • Page 103: Commissioning From Unit Controller

    • In the event of the heater being forcibly turned off through an optional DSW (DIP switch) setting, the mentioned conditions are not executed. Instead, heating is carried out solely by the heat pump. It is explicitly stated that Hitachi is not responsible for the operation under these circumstances.
  • Page 104 After “Test Run”, “Air Purge” or “Pump Down Procedure” option is selected, the YUTAKI user controller asks for the duration of the test. In case of test run, user can also select the mode of the test (cooling or heating). When user confirms the test run or the air purge, the YUTAKI user controller sends the order to the indoor.

  • Page 105: Nfc Tap Function

    7.3.1.1 Screed drying function The screed function is used exclusively for drying a newly applied screed to the floor heating system, based on EN-1264 Part 4. Users can activate the screed function in either standard or custom mode: ‹ Standard mode   ...
  • Page 106 Maintenance 8.1 Outdoor units ....................107 8.1.1 YUTAKI Monobloc R290 - RASM-(2-6)(V)TW2E ........107 8.1.1.1 Removing the upper cover .............107 8.1.1.2 Removing the service cover ...........108 8.2 Indoor units - Hydrosplit system ..............109 8.2.1 YUTAKI H - HWM-W2E(-B)..............109 8.2.1.1 Removing the indoor unit service cover ........109 8.2.1.2 Removing the indoor unit electrical box ........110 8.2.1.3 Space heating pipes connection ..........111 8.2.1.4 Cover assembly ..............112 8.2.2 YUTAKI H Combi - HWD-W2E-220S(-K) ..........114...

  • Page 107: Outdoor Units

    8.1 Outdoor units 8.1.1 YUTAKI Monobloc R290 - RASM-(2-6)(V)TW2E 8.1.1.1 Removing the upper cover Removing the upper cover allows to perform maintenance or check on internal components, including the electrical box. 1 Locate and unscrew the 6 screws securing the upper cover. 2 Carefully pull the upper cover upwards to remove it.

  • Page 108: Removing The Service Cover

    8.1.1.2 Removing the service cover NOTE Service cover needs to be removed for most of operations inside the outdoor unit. To remove the service cover, follow these steps: 1 Unscrew the three screws securing the service cover. 2 Rotate the cover to release it. 3 Pull the cover upward to fully remove it.

  • Page 109: Indoor Units - Hydrosplit System

    8.2 Indoor units - Hydrosplit system 8.2.1 YUTAKI H - HWM-W2E(-B) If it is necessary to access to the indoor unit components, please follow these operations. 8.2.1.1 Removing the indoor unit service cover NOTE The indoor unit service cover needs to be removed for any task inside the indoor unit. 1 Remove the screws which fix the service cover.

  • Page 110: Removing The Indoor Unit Electrical Box

    8.2.1.2 Removing the indoor unit electrical box DANGER • Disconnect the unit from the power supply before touching any of the parts in order to avoid an electrical shock. • Do not touch the switch for DHW tank heater operation when handling the electrical box. Keep the position of this switch in factory setting position (“Automatic”...

  • Page 111: Space Heating Pipes Connection

    8.2.1.3 Space heating pipes connection The unit is factory supplied with 4 shutdown valves which have to be connected to the water inlet / outlet connections. With these shutdown valves it is very practical to connect the indoor unit to the heating system by using the factory supplied gaskets just below the valves (G 1” connection).

  • Page 112: Cover Assembly

    8.2.1.4 Cover assembly 1 Place the indoor unit service cover at the same level of the wall mounted unit by taking it from the bottom side (one person can perform this operation, during this operation it is possible to rest the cover on the electrical box). 2 Place the holes on the right side of the indoor unit cover over the back plate hooks (x2 locations).
  • Page 113 3 Once the 4 hooks are placed into their corresponding cover holes, adjust the cover to the end of the hooks. 4 Fix the indoor unit service cover using the screws which had been previously removed during the unpacking procedure. (x2, both sides) PMEN0674 rev.0 - 03/2025...

  • Page 114: Yutaki H Combi - Hwd-W2E-220S(-K)

    8.2.2 YUTAKI H Combi - HWD-W2E-220S(-K) If it is necessary to access to the indoor unit components, please follow these operations. 8.2.2.1 Removing the indoor unit covers NOTE • Front cover needs to be removed for any task inside the indoor unit. •...

  • Page 115: Removing The Indoor Unit Electrical Box

    8.2.2.2 Removing the indoor unit electrical box DANGER • Disconnect the unit from the power supply before touching any of the parts in order to avoid an electrical shock. • Do not touch the switch for DHW tank heater operation when handling the electrical box. Keep the position of this switch in factory setting position (“Automatic”...

  • Page 116: Space Heating Pipes Connection

    8.2.2.3 Space heating pipes connection The unit is factory supplied with 4 shutdown valves to be connected to the water inlet/outlet pipe. With these shutdown valves it is very practical to connect the indoor unit to the heating system by using the factory supplied gaskets just below the valves (G 1” connection). Then, the space heating installation can be carried out.
  • Page 117 Drain pipes connection Drain taps must be provided at all low points of the installation to permit complete drainage of the circuit during servicing. Pressure and temperature relief valve (only for UK market) NOTE • Pressure and temperature relief valve is activated when water pressure reaches 7 bar and/or water temperature reaches 96°C.
  • Page 118 ERP performance data 9.1 General ERP data for space heaters ..............119 9.1.1 ERP data ....................119 9.1.1.1 YUTAKI Monobloc R290 + YUTAKI H / YUTAKI H Combi / YUTAKI Control Box ..............119 9.1.2 ERP additional data ................121 9.1.2.1 YUTAKI Monobloc R290 + YUTAKI H / YUTAKI H Combi / YUTAKI Control Box ..............121 9.2 General ERP data for combi heaters .............121 9.2.1 YUTAKI Monobloc R290 + YUTAKI H Combi ........121...
  • Page 119 9.1 General ERP data for space heaters 9.1.1 ERP data 9.1.1.1 YUTAKI Monobloc R290 + YUTAKI H / YUTAKI H Combi / YUTAKI Control Box    ◆ AVERAGE climate 2.0 HP 3.0 HP 3.5 HP 4.0 HP 5.0 HP 6.0 HP 4.0 HP 5.0 HP 6.0 HP Outdoor unit...
  • Page 120    ◆ WARMER climate 2.0 HP 3.0 HP 3.5 HP 4.0 HP 5.0 HP 6.0 HP 4.0 HP 5.0 HP 6.0 HP Outdoor unit RASM-2VTW2E RASM-3VTW2E RASM-3.5VTW2E RASM-4VTW2E RASM-5VTW2E RASM-6VTW2E RASM-4TW2E RASM-5TW2E RASM-6TW2E Indoor unit HWM-W2E(-B) / HWD-W2E-220S(-K) / ATW-CBX-01 Design capacity (P DESIGN Nominal energy efficiency (η...
  • Page 121 9.1.2 ERP additional data 9.1.2.1 YUTAKI Monobloc R290 + YUTAKI H / YUTAKI H Combi / YUTAKI Control Box 2.0 HP 3.0 HP 3.5 HP 4.0 HP 5.0 HP 6.0 HP 4.0 HP 5.0 HP 6.0 HP Outdoor unit RASM-2VTW2E RASM-3VTW2E RASM-3.5VTW2E RASM-4VTW2E RASM-5VTW2E RASM-6VTW2E...
  • Page 122 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. Ronda Shimizu, 1 - Políg. Ind. Can Torrella 08233 Vacarisses (Barcelona) Spain © Copyright 2025 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. – All rights reserved. PMEN0674 rev.0 - 03/2025...

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