Hitachi YUTAKI M R32 Series Installation & Operation Manual
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Hitachi YUTAKI M R32 Series Installation & Operation Manual

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INSTALLATION &
OPERATION
MANUAL
–
YUTAKI M R32 series
YUTAKI HYDROSPLIT R32 series
MODELS
RASM-(2/3)VRE
RASM-(4-7)(V)R1E
RASM-(4-7)(V)RW1E
HWM-WE
HWD-WE-220S(-K)
PMML0600 rev.0 - 06/2022

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  • Page 1 – INSTALLATION & OPERATION MANUAL – YUTAKI M R32 series YUTAKI HYDROSPLIT R32 series MODELS RASM-(2/3)VRE RASM-(4-7)(V)R1E RASM-(4-7)(V)RW1E HWM-WE HWD-WE-220S(-K) PMML0600 rev.0 - 06/2022...
  • 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 Originální verze tohoto dokumentu je v angličtině; ostatní jazykové varianty jsou z angličtiny přeložené. Pokud mezi anglickou a jakoukoli jinou jazykovou verzí dojde k rozporu, bude převažovat anglická verze. Az eredeti változat az angol; az egyéb nyelvű változatok angolról lettek fordítva. Amennyiben az angol és a fordított verziók között bármilyen eltérés mutatkozik, az angol nyelvű...

  • Page 4: Table Of Contents

    Contents General Information ...................... 11 Name of parts and dimensional data ................ 19 Electrical data ......................... 26 Working range ........................ 31 Drain and water piping ....................41 Electrical and control settings..................64 Commissioning ......................97 Maintenance .........................104 PMML0600 rev.0 - 06/2022...

  • Page 5: General Information

    General Index 1. General Information ......................1.1 General information ....................12 1.2 Applied Symbols......................12 1.3 Product guide ......................14 1.3.1  Classification of the units ................14 1.3.1.1 Monobloc system ................14 1.3.1.2 Hydrosplit system - Outdoor unit ..........14 1.3.1.3 Hydrosplit system - Indoor unit ............ 15 1.4 Product list ........................

  • Page 6: Working Range

    3.1.1 Monobloc system .................... 28 3.1.2 Hydrosplit system - Outdoor unit ..............29 3.1.2.1  RAS-(4-7)(V)WR1E in combination with YUTAKI H, YUTAKI H  Combi ....................29 3.1.3 Hydrosplit system - Indoor unit ..............29 3.1.3.1 YUTAKI H ................... 29 3.1.3.2 YUTAKI H Combi ................30 4. Working range ........................4.1 Power supply working range ..................

  • Page 7: Electrical And Control Settings

    5.3.2 Draining operation for YUTAKI H Combi ............45 5.4 YUTAKI Hydraulic Connections ................46 5.4.1 Hydraulic Connections for YUTAKI M ............46 5.4.2 Hydraulic Connections for YUTAKI HYDROSPLIT and YUTAKI H ..... 46 5.4.3 Hydraulic Connections for YUTAKI HYDROSPLIT and YUTAKI H Combi 47 5.4.4 Parts name list ....................

  • Page 8: Commissioning

    6.2.1 Refrigerant cycle PCB ..................83 6.2.1.1 DSW1 ....................83 6.2.1.2 DSW2 ....................84 6.2.1.3 DSW3 ....................85 6.2.1.4 DSW4 / RSW1 ..................86 6.2.1.5 DSW5 ....................86 6.2.1.6 DSW6 ....................87 6.2.1.7 DSW7 ....................87 6.2.1.8 DSW301 .................... 88 6.2.1.9 DSW302 ....................

  • Page 9: Maintenance

    7.1 Before operation ......................98 7.2  Preliminary check....................... 98 7.2.1  Checking the unit ..................... 98 7.2.2  Electrical checking ................... 98 7.2.3    H ydraulic circuit checking (space heating and DHW) ....... 99 7.2.4  Checking the refrigerant circuit ..............99 7.2.5  Test and check ....................100 7.3 Commissioning procedure ..................100 7.4 Test run / air purge ....................101 8.
  • Page 10 8.3 YUTAKI H Combi .......................117 8.3.1  Removing the indoor unit covers ...............117 8.3.2 Removing indoor unit electrical box ............118 8.3.3  Space heating pipes connection ..............119 8.3.4 DHW pipes connection .................120 8.3.4.1 Drain pipes connection ..............120 PMML0600 rev.0 - 06/2022...

  • Page 11: General Information

    General Information General information ................. 12 1.2 Applied Symbols ................12 1.3 Product guide ..................14 1.3.1  Classification of the units ............14 1.3.1.1 Monobloc system ............. 14 1.3.1.2 Hydrosplit system - Outdoor unit ......14 1.3.1.3 Hydrosplit system - Indoor unit ......15 1.4 Product list ..................

  • Page 12: Applied Symbols

    No part of this publication may be reproduced, copied, filed or transmitted in any shape or form without the permission of Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. Within the policy of continuous improvement of its products, Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. reserves the right to make changes at any time without prior notification and without being compelled to introducing them into products previously sold.
  • Page 13 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 14: Product Guide

    1.3 Product guide 1.3.1 Classification of the units 1.3.1.1 Monobloc system ◆ YUTAKI M R32 - RASM-(2-7)(V)R(1)E Unit type: Monobloc system - Single water module (Outdoor unit) - Low/Medium temperature Position-separating hyphen (fixed) Compressor power (HP): 2.0, 3.0, 4.0, 5.0, 6.0, 7.0 V: Single phase unit (~ 230V 50Hz) —: Three phase unit (3N~ 400V 50Hz) R32 refrigerant...

  • Page 15: Hydrosplit System - Indoor Unit

    1.3.1.3 Hydrosplit system - Indoor unit ◆ YUTAKI H - HWM-WE Unit type: Hydrosplit system - Single water module (Indoor unit) - Medium/Low temperature Position-separating hyphen (fixed) W: Water to water Made in Europe ◆ YUTAKI H Combi - HWM-WE-220S(-K) Unit type: Split system - Dual water module (Indoor unit + Domestic hot water tank) - Medium/Low temperature Position-separating hyphen (fixed) Water-to-water DHW heat exchanger Made in Europe Position-separating hyphen (fixed)

  • Page 16: 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 : Cooling operation  : Additional heater (electrical heater accessory or boiler) : Domestic Hot Water (DHW) : Swimming pool application : Solar combination 1.4.1 Monobloc system ◆...

  • Page 17: Hydrosplit System R32

    1.4.2 Hydrosplit system R32 ◆ YUTAKI Hydrosplit system - RASM-(4-7)(V)RW1E ( )( )( )( )( ) Model Power supply Remarks Picture RASM-4VRW1E RASM-5VRW1E ~ 230V 50Hz RASM-6VRW1E Hydrosplit RASM-4RW1E air-to-water heat RASM-5RW1E pump system 3N~ 400V 50Hz RASM-6RW1E RASM-7RW1E NOTE For cooling operation, refer to the Cooling kit accessory.

  • Page 18: Unit Controller Accessory

    ◆ YUTAKI H Combi Standard model Model Power supply Remarks Picture ~ 230V 50Hz Floor standing indoor units with integrated DHW tank for HWD-WE-220S 3N~ 400V 50Hz Hydrosplit air-to-water heat pump system Model for UK market Model Power supply Remarks Picture Floor standing indoor units with integrated DHW ~ 230V 50Hz...
  • Page 19 Name of parts and dimensional data 2.1 YUTAKI M R32 ......................20 2.1.1 RASM-(2/3)VRE ....................20 2.1.2 RASM-(4-7)(V)R1E ..................... 21 2.2 YUTAKI Hydrosplit R32 - RASM-(4-7)(V)WR1E ............22 2.3 YUTAKI H - HWM-WE ....................23 2.4 YUTAKI H Combi - HWD-WE-220S ................24 2.5 YUTAKI H Combi - HWD-WE-220S-K ................

  • Page 20: Yutaki M R32

    2.1 YUTAKI M R32 2.1.1 RASM-(2/3)VRE Compressor Expansion vessel 6L Water side heat exchanger Switch for DHW “emergen- Air side heat exchanger cy” operation Electrical box Pressure switch for control Fan (x1) (Psc) Expansion valve (x2) Ambient thermistor Reversing valve Liquid temperature ther- Accumulator mistor...

  • Page 21: Rasm-(4-7)(V)R1E

    2.1.2 RASM-(4-7)(V)R1E Compressor Safety valve Water side heat exchanger Expansion vessel Air side heat exchanger Switch for DHW “emergency” Economizer operation Electrical box Sensor for refrigerant pressure Fan (x2) (Pd) Expansion valve (x3) Sensor for refrigerant pressure Reversing valve (Ps) Solenoid valve (SVA) Ambient thermistor Solenoid valve (SVC)

  • Page 22: Yutaki Hydrosplit R32 - Rasm-(4-7)(V)Wr1E

    2.2 YUTAKI Hydrosplit R32 - RASM-(4-7)(V)WR1E Compressor Ø9.52(3/8”) Water side heat exchanger Sensor for refrigerant Air side heat exchanger pressure (Pd) Economizer Sensor for refrigerant Electrical box pressure (Ps) Fan (x2) Ambient thermistor Expansion valve (x3) Evaporation thermistor Reversing valve Liquid refrigerant pipe in Solenoid valve (SVA) heating thermistor...

  • Page 23: Yutaki H - Hwm-We

    2.3 YUTAKI H - HWM-WE Water pump Electric water heater Expansion vessel (6 Liters) Water strainer Air purger Water pressure sensor Safety valve Drain pipe for safety valve Manometer Unit controller Electrical box Switch for DHW emergency oper- ation Water inlet pipe connection (G 1-1/4”...

  • Page 24: Yutaki H Combi - Hwd-We-220S

    2.4 YUTAKI H Combi - HWD-WE-220S Water pump Electric water heater Expansion vessel (6 Liters) Water strainer Air purger (x2) Water pressure sensor Safety valve Drain pipe for safety valve (Fac- tory-supplied accessory) 3-way valve (for space heating and DHW) Electrical box Switch for DHW “emergency operation”...

  • Page 25: Yutaki H Combi - Hwd-We-220S-K

    2.5 YUTAKI H Combi - HWD-WE-220S-K Water pump Electric water heater Expansion vessel (6 Liters) Water strainer Air purger (x2) Water pressure sensor Safety valve Drain pipe for safety valve (Factory-supplied accessory) 3-way valve (for space heating and DHW) Electrical box Switch for DHW “emergency operation”...

  • Page 26: Electrical Data

    Electrical data 3.1 Considerations ......................27 3.1.1 Monobloc system .................... 28 3.1.2 Hydrosplit system - Outdoor unit ..............29 3.1.2.1 RAS-(4-7)(V)WR1E in combination with YUTAKI H, YUTAKI H Combi ....................29 3.1.3 Hydrosplit system - Indoor unit ..............29 3.1.3.1 YUTAKI H ....................29 3.1.3.2 YUTAKI H Combi .................

  • Page 27: Considerations

    ✓ 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 28 3.1.1 Monobloc system ◆ YUTAKI M (R32) RASM-(2-3)VRE Cooling Heating Applicable voltage Max. operation operation Power Model Operation mode U max. U min. supply (kW) (KW) (KW) Without DHW tank heater 1.00 1.14 10.6 2.32 RASM-2VRE With DHW tank heater 1.00 18.8 3.89 23.1 5.07...
  • Page 29 3.1.2 Hydrosplit system - Outdoor unit 3.1.2.1 RAS-(4-7)(V)WR1E in combination with YUTAKI H, YUTAKI H Combi Compressor and fan motors Applicable voltage Max. IPT Cooling Heating Model Power supply (kW) U max. U min. (KW) (KW) RASM-4VRW1E 14.3 3.26 10.3 2.34 28.5 5.90...
  • Page 30 3.1.3.2 YUTAKI H Combi HWD-WE-220S(-K) Applicable Max. voltage Model Power supply Operation mode (kW) U max. U min. (kW) Without electric heater 0.18 1.47 0.18 With electric heater 27.6 6.18 27.6 6.18 ~ 230V 50Hz With DHW tank heater 13.4 2.93 13.4 2.93...
  • Page 31 Working range 4.1 Power supply working range ..................32 4.2 Temperature working range ..................32 4.2.1 Space heating ....................33 4.2.2 DHW ........................34 4.2.3 Swimming pool heating ................. 35 4.2.4 Space cooling (Necessary cooling kit) ............35 4.3 R32 Hydraulic working range ................... 36 4.3.1 Hydraulic data ....................

  • Page 32: Power Supply Working Range

    4.1 Power supply working range ◆ Nominal power supply • Single phase: ~ 230V 50Hz • Three phase: 3N~ 400V 50Hz ◆ Operating voltage Between 90 and 110% of the nominal voltage. ◆ Voltage imbalance for nominal power supply 3N~ 400V 50Hz Up to 3% of each phase, measured at the main terminal of the outdoor unit.

  • Page 33: Space Heating

    4.2.1 Space heating ◆ RASM-(2-3)VRE Continuous working range Start up Ambient temperature (ºC) ◆ RASM-(4-7)(V)R(W)1E Continuous working range Heat pump operation possible Start up Starting only back-up heater operation (Only for YUTAKI Hydrosplit models) Ambient temperature (ºC) PMML0600 rev.0 - 06/2022...

  • Page 34: Dhw

    4.2.2 DHW ◆ RASM-(2-3)VRE Continuous working range Tank heater Ambient temperature (ºC) NOTE Area marked with only available if DHW tank back-up heater is enabled. ◆ RASM-(4-7)(V)R(W)1E Continuous working range Tank heater Ambient temperature (ºC) NOTE Area marked with only available if DHW tank back-up heater is enabled. PMML0600 rev.0 - 06/2022...

  • Page 35: Swimming Pool Heating

    4.2.3 Swimming pool heating ◆ RASM-(2-3)VRE Continuous working range Ambient temperature (ºC) ◆ RASM-(4-7)(V)R(W)1E Continuous working range Heat pump operation possible Ambient temperature (ºC) 4.2.4 Space cooling (Necessary cooling kit) Continuous working range Refreshing floor working area Fan coil working area Ambient temperature (ºC) PMML0600 rev.0 - 06/2022...

  • Page 36: R32 Hydraulic Working Range

    4.3 R32 Hydraulic working range 4.3.1 Hydraulic data ◆ YUTAKI M R32 MODEL 4.0 HP 5.0 HP 6.0 HP 7.0 HP 2.0 HP 2.5 HP 3.0 HP Minimum water flow rate (*1) Maximum water flow rate (*1) Minimum installation water volume (*2) Minimum allowable water pressure Maximum allowable water pressure ◆...

  • Page 37: Pump Performance Curves

    4.3.2 Pump performance curves NOTE If a water flow rate is selected out of the working range of the unit, it can cause malfunction on the unit. Please, try to operate the pump within the minimum and maximum water flow. 4.3.2.1 YUTAKI M R32 2.0 HP 3.0 HP...
  • Page 38 6.0 HP 7.0 HP Water flow (m Water flow (m PMML0600 rev.0 - 06/2022...

  • Page 39: Yutaki Hydrosplit R32 + Yutaki H

    4.3.2.2 YUTAKI Hydrosplit R32 + YUTAKI H NOTE Available pressure shown is considering the system (outdoor units + indoor unit), without considering any pipe length which depends on the field installation. 4.0 HP 5.0 HP 14.0 14.0 12.0 12.0 10.0 10.0 Water flow (m Water flow (m...

  • Page 40: Yutaki Hydrosplit R32 + Yutaki H Combi

    4.3.2.3 YUTAKI Hydrosplit R32 + YUTAKI H Combi NOTE Available pressure shown is considering the system (outdoor units + indoor unit), without considering any pipe length which depends on the field installation. 4.0 HP 5.0 HP 14.0 14.0 12.0 12.0 10.0 10.0 Water flow (m...
  • Page 41 Drain and water piping Water Drain Discharge Connection (Accessory) ......43 5.1.1 Connecting procedure ............43 5.2 Outdoor Unit Draining Operation ..........44 5.3 Indoor Unit Draining Operation ............. 44 5.3.1 Draining operation for YUTAKI H .......... 44 5.3.2 Draining operation for YUTAKI H Combi ......45 5.4 YUTAKI Hydraulic Connections ............
  • Page 42 5.5.6 Glycol as anti-freezing protection ........54 5.5.7 Insulation ................. 56 5.5.8  Water filling ................56 5.5.9 Water quality ................58 5.6 Minimum water volume description ..........60 5.7 Water piping ..................62 5.7.1 Water piping length ..............62 5.7.2 Water piping size ..............62 5.8 Suspension of water piping ............

  • Page 43: 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 Applicable model DBS-12L RASM-(2/3)VRE DBS-26...

  • Page 44: Outdoor Unit Draining Operation

    Drain pipe Drain pipe Extruded portion Drain hole Drain boss of base Rubber cap RASM-(4-7)(V)R(W)1E 5.2 Outdoor Unit Draining Operation YUTAKI M / YUTAKI Hydrosplit has no drain port factory supplied. It is highly recommended to install a drain port valve attached to the water outlet of the YUTAKI M / YUTAKI Hydrosplit unit in order to ease the operation of draining.

  • Page 45: Draining Operation For Yutaki H Combi

    5.3.2 Draining operation for YUTAKI H Combi ◆ Draining of the indoor unit 1 Switch OFF the main power supply of the indoor unit. 2 Close the 4 shut-off valves installed at the space heating and outdoor unit connections (Water inlet and outlet connections).

  • Page 46: Yutaki Hydraulic Connections

    5.4 YUTAKI Hydraulic Connections 5.4.1 Hydraulic Connections for YUTAKI M 5.4.2 Hydraulic Connections for YUTAKI HYDROSPLIT and YUTAKI H PMML0600 rev.0 - 06/2022...

  • Page 47: Hydraulic Connections For Yutaki Hydrosplit And Yutaki H Combi

    5.4.3 Hydraulic Connections for YUTAKI HYDROSPLIT and YUTAKI H Combi 5.4.4 Parts name list Item Nature Part Name Piping connections Outdoor Heat pump water outlet Piping connections Outdoor Heat pump water inlet Piping connections Hydrosplit water inlet Piping connections Hydrosplit water oulet Piping connections DHW coil inlet Piping connections...
  • Page 48 Item Nature Part Name Accessories Pressure and check valve (field suppied) Field supplied 6a Shut-off valve Field supplied 6b Water check valve Field supplied 6c Pressure relief valve Field supplied Draining Field supplied Shut-off valve Accessories Water check valve (ATW-WCV-01 accessory) Field supplied Water pump Field supplied Shut-off valve Field supplied Shut-off valve Field supplied...

  • Page 49: Space Heating And Dhw For Yutaki M / Yutaki Hydrosplit

    5.5 Space heating and DHW for YUTAKI M / YUTAKI Hydrosplit DANGER Do not connect the power supply to the unit prior to filling the space heating circuit (and DHW circuit if it were the case) with water and checking water pressure and the total absence of any water leakage.

  • Page 50: Additional Hydraulic Necessary Elements For Dhw

    5.5.2 Additional hydraulic necessary elements for DHW Nature 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) Field supplied Shut-off valve (field supplied) Domestic hot water tank (DHWT-(200/300)S-3.0H2E accessory) Accessories...
  • Page 51 Additionally, the following elements are required for the DHW circuit: Nature Nº Part name Water inlet (DHW) Piping connections Water outlet (DHW) Pressure and temperature relief valve Shut-off valve Water check valve Field supplied Pressure relief valve Shut-off valve Draining PMML0600 rev.0 - 06/2022...

  • Page 52: Additional Hydraulic Optional Elements (For Dhw)

    5.5.3 Additional hydraulic optional elements (For DHW) In case of a recirculation circuit for the DHW circuit: Nature Nº Part name Water inlet (DHW) Piping connections Water outlet (DHW) Water check valve Accessories (ATW-WCV-01 accessory) Water pump Field supplied Shut-down valve PMML0600 rev.0 - 06/2022...

  • Page 53: Requirements And Recommendations For The Hydraulic Circuit

    5.5.4 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 “4.3.2 Pump performance curves”. • The units are equipped with a manual air purger (factory supplied) at the highest location of the unit.

  • Page 54: Anti-Freezing Protection For Water Circuit

    water pressure and the water temperature range in which the unit can operate. • YUTAKI units are conceived for exclusive use in a closed water circuit. • The internal air pressure of the expansion vessel tank will be adapted to the water volume of the final installation (factory supplied with 0.1 MPa of internal air pressure).
  • Page 55 Frost protection % Volume propylene glycol coolant Burst point acc. to DIN51583 Frost protection Freezing point acc. to ASTM D1177 Frost protection % Volume etylene glycol coolant Burst point acc. to DIN51583 Frost protection Freezing point acc. to ASTM D1177 NOTE •...

  • Page 56: Insulation

    CAUTION • Do not add glycol that has been exposed to air as glycol absorbs water to 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 &...
  • Page 57 manually so as to help with the air purging procedure. 6 Remove as much air from inside the water circuit as possible through the air purger and other air vents in the installation (fan coils, radiators...). 7 Start the air purge procedure test. There are two modes (Manual or Automatic) which helps in case of installations with heating and DHW operation: a.

  • Page 58: Water Quality

    Using filling water that does not meet the stated quality requirements can cause a considerably reduce in service life. The responsibility will be out of Hitachi warranties. The following water quality minimum requirement:...
  • Page 59 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.

  • Page 60: Minimum Water Volume Description

    5.6 Minimum water volume description The following part shows how to calculate the minimum water volume in the system for product protection (anti-hunting) and temperature drop at defrosting. MODEL Minimum Volume * NOTE (*) Minimum volume is applicable for usual working conditions. If T temperature during normal operation is below 25ºC, the following steps must be applied to consider the defrost effect.
  • Page 61 value is approximately 85% of the heating capacity on the unit under standard conditions (air temperature: 6/7ºC (WB/DB) and input/output temperature of the water: 40 / 45ºC) NOTE The maximum time for defrosting considered is 6 minutes per hour. The following table shows the minimum water volume needed in each unit. Water temperature drop Volume (L) 5ºC...

  • Page 62: Water Piping

    5.7 Water piping 5.7.1 Water piping length Consider the following guidelines when designing the water circuit. YUTAKI HYDROSPLIT R32 Item YUTAKI H YUTAKI H Combi Maximum water piping length between indoor unit and DHW tank 10 m Maximum water piping length between indoor unit and 3-way valve Maximum water piping length between 3-way valve and DHW tank 10 m Minimum water piping length between YUTAKI Hydrosplit and YUTAKI H or...

  • Page 63: Suspension Of Water Piping

    Water inlet Water outlet RASM-(4-7)(V)R(W)1E ◆ PIping size (inches) Space heating pipes connection Model Shut-off valves Inlet connection Outlet connection (Field-supplied) 2.0 HP G 1” (female) G 1” (female) G 1” (male) - G 1” (male) 3.0 HP G 1” (female) G 1”...
  • Page 64 Electrical and control settings 6.1 Optional unit wiring for accessories ............... 66 6.1.1 Summary of the terminal board connections ..........66 6.1.2 Input terminals (Default input functions) ........... 70 6.2 Setting of DIP switches and RSW switches ............80 6.2.1 Refrigerant cycle PCB ..................83 6.2.1.1 DSW1 ....................
  • Page 65 6.2.2.9 DSW16 & RSW1 ................94 6.2.2.10 DSW18 ..................... 95 6.2.2.11 SSW1 ....................95 6.2.2.12 SSW2 ....................95 6.2.2.13 LED indication ................96 PMML0600 rev.0 - 06/2022...

  • Page 66: Optional Unit Wiring For Accessories

    6.1 Optional unit wiring for accessories 6.1.1 Summary of the terminal board connections RASM-(2-3)VRE, RASM-(4-7)(V)R(W)1E and HWM-WE Mark Part name Description TERMINAL BOARD 1 (TB1) ~ 230V 50Hz Main power supply connection TERMINAL BOARD 2 (TB2) The H-LINK transmission has to be done between the indoor unit and the H-LINK communication terminals 1-2 of either outdoor unit, ATW-RTU or any other central device.
  • Page 67 Mark Part name Description Input 4 (Solar) (*) Available input for Solar combination with Domestic Hot Water Tank. For the connection of an external tariff switch device to switch OFF the heat Input 5 (Smart function) (*) pump during peak electricity demand period. Depending on the setting, the heat pump or DHWT will be blocked when signal is open/closed.
  • Page 68 HWD-WE-220S(-K) Mark Part name Description TERMINAL BOARD 1 (TB1) ~ 230V 50Hz Main power supply connection TERMINAL BOARD 2 (TB2) The H-LINK transmission has to be done between the indoor unit and the H-LINK communication terminals 1-2 of either outdoor unit, ATW-RTU or any other central device. H-LINK communication for Terminals for the connection of the YUTAKI unit controller.
  • Page 69 Mark Part name Description 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 70: Input Terminals (Default Input Functions)

    6.1.2 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 terminals1 and 2.
  • Page 71 Jumper Common Line Demand ON/OFF Receiver input 2 Thermostat requirements: Power supply: 230V AC Contact voltage: 230V 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 “6.1.2 Input terminals (Default input functions)”...
  • Page 72 ◆ Earth Earth Earth RASM-(2-7)(V)R(W)(1)E HWD-WE-220S(-K) HWM-WE HWD-WE-220S(-K) ◆ 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 TB2 (Not available for HWD-WE-220S(-K).
  • Page 73 ◆ Water outlet thermistor for circuit 3 (TWO3) When the installation is configured with a third circuit the thermistor for the water outlet temperature have to be connected between terminals 8 and 9 of the terminal board 2. AuxSensor1 ◆ Swimming pool water temperature thermistor (TSWP) To control the swimming pool temperature.
  • Page 74 purpose. Common Line Input 2 ◆ 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 75 ◆ Smart tariff (Default for input 5) This function can be used to block or limit the heat pump. It allows an external Smart switch device to switch off or limit the heat pump during a period of peak electricity demand. Terminals 16 and 19 of the TB2.
  • Page 76 ◆ Aquastat for circuit 1 Aquastat is a security accessory to control in order to prevent high water temperature entering into floor system (Circuit 1). This devices must be connected to terminals 22 & 23 for circuit 1. When this devices is activated because of the high temperature of the water, it stops the water pump in order to stop the flow of water to the heating floor.
  • Page 77 ≤ 3kW DHWT (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). ◆ 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.
  • Page 78 ◆ 3 Way valve for DHW tank output YUTAKI units can be used to heat DHW. The signal is used on a 3-way motorized diverting valve and to provide control of supply water flow (water flow for space heating when there is no signal, and water flow for DHW when signal is ON) Brown Valve requirements:...
  • Page 79 ◆ Auxiliary boiler or heater (Default for Output 3) The auxiliary boiler or heater can be used when the heat pump cannot achieve the require temperature by itself. Auxiliary Heat (Output 3) ◆ Solar (Default for output 4) This output is used when solar mode is enabled (from Unit controller) and the temperature in the solar panel rises above the water temperature in the domestic hot water tank (DHWT).

  • Page 80: Setting Of Dip Switches And Rsw Switches

    6.2 Setting of DIP switches and RSW switches NOTE • The mark “■” indicates the DIP switches positions. • No mark “■” indicates pin position is not affected. • The figures show the settings before shipment or after selection. • “Not used” means that the pin must not be changed. A malfunction might occur if changed. CAUTION Before setting DIP switches, first turn the power supply OFF and then set the position of DIP switches.
  • Page 81 YUTAKI M / YUTAKI Hydrosplit R32 - RASM-(4-6)VR(W)1E (~230V 50Hz) Water cycle Refrigerant cycle YUTAKI M / YUTAKI Hydrosplit R32 - RASM-(4-7)R(W)1E (3N~ 400V 50Hz) Water cycle Refrigerant cycle PMML0600 rev.0 - 06/2022...
  • Page 82 YUTAKI H / H Combi - HWM-WE / HWD-WE-220S(-K) Water cycle PMML0600 rev.0 - 06/2022...

  • Page 83: Refrigerant Cycle Pcb

    6.2.1 Refrigerant cycle PCB 6.2.1.1 DSW1 ◆ Cancellation of electric current detection RASM-(2/3)VRE: PCB1 RASM-(4-6)VR(W)1E: PCB1 RASM-(4-7)R(W)1E: PCB2 DSW1 RASM-(2/3)VRE RASM-(4-6)VR(W)1E RASM-(4-7)R(W)1E Factory setting When set pin to ON, the electric current detection is cancelled. Pin should be set back to OFF after electrical Not applicable work.

  • Page 84: Dsw2

    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-minute guard for compressor protection will be effective. •...

  • Page 85: Dsw3

    6.2.1.3 DSW3 ◆ Capacity Setting (No setting is required) RASM-(2/3)VRE: PCB1 RASM-(4-6)VR(W)1E: PCB2 RASM-(4-7)R(W)1E: PCB1 DSW3 Factory setting RASM-2VRE RASM-3VRE RASM-4VR(W)1E RASM-5VR(W)1E RASM-6VR(W)1E RASM-4R(W)1E RASM-5R(W)1E RASM-6R(W)1E RASM-7R(W)1E NOTE For RASM-7R(W)1E DSW6 must be configured to PIN 1 ON (factory setting, do not change). PMML0600 rev.0 - 06/2022...

  • Page 86: Dsw4 / Rsw1

    6.2.1.4 DSW4 / RSW1 ◆ Refrigerant cycle selection (No setting is required) RASM-(2/3)VRE: PCB1 RASM-(4-6)VR(W)1E: PCB2 RASM-(4-7)R(W)1E: PCB1 DSW4 / RSW1 RASM-(2-7)(V)R(W)(1)E Factory setting 6.2.1.5 DSW5 ◆ Terminal resistance RASM-(2/3)VRE: PCB1 RASM-(4-6)VR(W)1E: PCB1 RASM-(4-7)R(W)1E: PCB1 DSW5 RASM-(2/3)VRE RASM-(4-6)VR(W)1E RASM-(4-7)R(W)1E Factory setting Fuse recovery Not applicable Not applicable...

  • Page 87: Dsw6

    6.2.1.6 DSW6 ◆ No setting is required RASM-(2/3)VRE: PCB1 RASM-(4-6)VR(W)1E: PCB2 RASM-(4-7)R(W)1E: PCB1 DSW6 RASM-(2/3)VRE RASM-(4-6)(V)R(W)1E RASM-7R(W)1E Factory setting 6.2.1.7 DSW7 ◆ Function selection RASM-(2/3)VRE: PCB1 RASM-(4-6)VR(W)1E: PCB2 RASM-(4-7)R(W)1E: PCB1 DSW7 RASM-(2/3)VRE RASM-(4-7)(V)R(W)1E Factory setting Open valves (when DSW1 for test run pin 4 is switched ON) Not applicable PMML0600 rev.0 - 06/2022...

  • Page 88: Dsw301

    6.2.1.8 DSW301 ◆ Test run mode (Only for RASM-(2/3)VRE) RASM-(2/3)VRE: PCB2 DSW301 RASM-(2/3)VRE Factory setting Test run for pump down Not available Not available Not available Forced stoppage of compressor NOTE • This operation is reset once the compressor is in Thermo-ON mode. •...

  • Page 89: Led Indication

    6.2.1.10 LED indication ◆ RASM-(2-3)VRE Name Colour Indication PCB1 LED1 Power LED2 Green Communication with inverter LED3 Yellow H-LINK transmission LED4 Yellow Not used LED351 For inspection LED353 For inspection PCB2 For inspection For inspection For inspection For inspection ◆ RASM-(4-7)(V)R(W)1E Name Colour Indication...

  • Page 90: Water Cycle Pcb

    6.2.2 Water cycle PCB 6.2.2.1 DSW1 ◆ Additional setting 1 DSW1 RASM-(V)R(1)E RASM-(V)RW1E HWM-WE HWD-WE-220S(-K) Factory setting (*) NOTE (*): In case of installing the “Cooling kit” accessory, set the pin 4 of DSW1 to ON in order to enable the cooling operation.

  • Page 91: Dsw3

    Setting required in DSW2 Factory setting HWM-WE and HWD-WE-220S(-K) for combination RASM-4(V)R(W)1E Not applicable RASM-5(V)R(W)1E Not applicable RASM-6(V)R(W)1E Not applicable RASM-7R(W)1E Not applicable 6.2.2.3 DSW3 ◆ Additional setting 1 HWM-WE DSW3 RASM-VR(1)E RASM-R1E RASM-(V)RW1E HWD-WE-220S(-K) Factory setting 1 step heater for 3 phase unit option Not applicable Not applicable 6.2.2.4 DSW4...
  • Page 92 HWM-WE DSW4 RASM-(V)R(1)E RASM-(V)RW1E HWD-WE-220S(-K) DHW defrost Not applicable (Not applicable for HWD-WE-220S(-K)) Heater forced OFF Not applicable Unit and installation pipes antifreeze Not applicable protection Standard / ECO water pump operation Not applicable Electric heater or boiler emergency Not applicable mode DHW tank’s heater operation Not applicable...

  • Page 93: Dsw5

    6.2.2.5 DSW5 ◆ Additional setting 3 RASM-(V)R(1)E DSW5 RASM-(V)RW(1)E HWM-WE HWD-WE-220S(-K) Factory setting Outdoor unit sensor for circuits 1 and 2. Not applicable Outdoor unit sensor for circuit 1; Auxiliary sensor for Not applicable circuit 2. Auxiliary sensor for circuit 1; Outdoor unit sensor for Not applicable circuit 2.

  • Page 94: Dsw7

    6.2.2.7 DSW7 ◆ Additional setting 4 RASM-(V)R(1)E DSW7 RASM-(V)RW(1)E HWM-WE HWD-WE-220S(-K) Factory setting Compatibility with ATW-RTU-04 (When cooling mode operation Not applicable is needed) 6.2.2.8 DSW15 & RSW2 ◆ Refrigerant cycle address RASM-(V)R(W)(1)E DSW15 & RSW2 HWM-WE HWD-WE-220S(-K) Factory setting Example of system setting with a value of: 5 Refrigerant cycle address setting (Required only when YUTAKI Cascade Controller is...
  • Page 95 6.2.2.10 DSW18 ◆ Not used RASM-(V)R(W)(1)E DSW18 HWM-WE HWD-WE-220S(-K) Factory setting (Do not change) 6.2.2.11 SSW1 ◆ Remote/Local HWM-WE SSW1 RASM-(V)R(1)E RASM-(V)RW1E HWD-WE-220S(-K) Remote Remote Remote Factory setting Local Local Local Remote Local operation Not available Not available Local NOTE •...
  • Page 96 6.2.2.13 LED indication Name Colour Indication LED1 Green Power indication LED2 Power indication LED3 Heat pump operation (thermo ON/OFF) LED4 Yellow Alarm (flickering with 1 sec interval) LED5 Green Not used LED6 Yellow H-Link transmission LED7 Yellow H-Link transmission for unit controller PMML0600 rev.0 - 06/2022...
  • Page 97 Commissioning 7.1 Before operation ...................98 7.2 Preliminary check ..................98 7.2.1 Checking the unit ................98 7.2.2 Electrical checking................98 7.2.3 Hydraulic circuit checking (space heating and DHW) ......99 7.2.4 Checking the refrigerant circuit ............99 7.2.5 Test and check ...................100 7.3 Commissioning procedure .................100 7.4 Test run / air purge ..................101 PMML0600 rev.0 - 06/2022...

  • Page 98: 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 99: Hydraulic Circuit Checking (Space Heating And Dhw)

    • Check that field-supplied electrical components (main switches, breakers, wires, conduit connectors and wire terminals) have been properly selected according to the electrical specifications given in this document, and check that the components comply with national and local standards. • Do not touch any electrical components for more than three minutes after turning OFF the main switch •...

  • Page 100: Test And Check

    7.2.5 Test and check Finally, test and check the following items: • Water leakage • Refrigerant leakage • Electrical connection NOTE Please refer to the chapters of “5.1.5 Water filling” and “7.3 Commissioning procedure” in this doc- ument and refer the Outdoor unit Installation and Operation manual for the specific details about refrigerant charge tasks.

  • Page 101: Test Run / Air Purge

    NOTE In case of Heater Forced OFF (by optional DIP switch setting) these condition is not performed and heating is performed by Heat Pump. HITACHI is not responsible for its operation. CAUTION It is recommended start the unit (first power ON) with heater forced OFF and compressor forced OFF (See “6.2 Setting of DIP switches and RSW...
  • Page 102 This menu shows the following test to be launched: • Unit Test Run • Air Purge • Screed Drying • Pump down procedure After “Test Run”, “Air Purge” or “Pump down procedure” option is selected, the YUTAKI user con- troller asks for the duration of the test. Example for PC-ARFH2E PMML0600 rev.0 - 06/2022...
  • Page 103 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. During the execution of this test, the following screen is shown: When the test starts, the user controller will exit from the installer mode.
  • Page 104 Maintenance 8.1 YUTAKI M R32 and YUTAKI Hydrosplit R32 ..........105 8.1.1 RASM-(2-3)VRE ...................105 8.1.1.1 Removing the service cover ..........105 8.1.1.2 Removing the upper cover ..........106 8.1.1.3 Removing the front cover ...........107 8.1.1.4 Removing the rear cover ............107 8.1.2 RASM-(4-7)(V)R(W)1E .................109 8.1.2.1 Removing the service cover ..........109 8.1.2.2 Removing the upper cover ..........110 8.1.2.3 Removing the rear cover ............111...

  • Page 105: Yutaki M R32 And Yutaki Hydrosplit R32

    8.1 YUTAKI M R32 and YUTAKI Hydrosplit R32 8.1.1 RASM-(2-3)VRE 8.1.1.1 Removing the service cover NOTE Service cover needs to be removed for most of operations inside the outdoor unit. 1 Remove the upper cover as explained in “8.1.1.2 Removing the upper cover” 2 Remove the 6 screws fixing the Service cover.

  • Page 106: Removing The Upper Cover

    8.1.1.2 Removing the upper cover 1 Remove the 7 screws fixing the Upper cover 1- Upper cover 2 Pull the Upper cover upwards and remove it. CAUTION Pay attention of no falling off the upper cover. PMML0600 rev.0 - 06/2022...

  • Page 107: Removing The

    8.1.1.3 Removing the front cover 1 Remove the upper cover as explained in “8.1.1.2 Removing the upper cover” 2 Remove the service cover as explained in “8.1.1.1 Removing the service cover” 3 To remove the front cover remove 7 fixing screws and 3 left nails. 1- Front cover 2- Nails CAUTION...
  • Page 108 2 Slide the Rear cover slightly downwards and remove it pulling it backwards. CAUTION Pay attention of no falling off the rear cover. PMML0600 rev.0 - 06/2022...

  • Page 109: Rasm-(4-7)(V)R(W)1E

    8.1.2 RASM-(4-7)(V)R(W)1E 8.1.2.1 Removing the service cover NOTE Service cover needs to be removed for most of operations inside the outdoor unit. 1 Remove the 6 screws fixing the Service cover. 2 Remove the screw at the right side of the unit fixing the Service cover 3 Slide the service cover slightly downwards and remove it pulling it backwards.

  • Page 110: Removing The Upper Cover

    8.1.2.2 Removing the upper cover 1 Remove the 13 screws fixing the upper cover. 2 Pull the upper cover upwards and remove it. CAUTION Pay attention of no falling off the upper cover. PMML0600 rev.0 - 06/2022...

  • Page 111: Removing The Rear Cover

    8.1.2.3 Removing the rear cover 1 Remove the 11 screws fixing the rear cover. 2 Slide the Rear cover slightly downwards and remove it pulling it backwards. CAUTION Pay attention of no falling off the Rear cover. PMML0600 rev.0 - 06/2022...

  • Page 112: Yutaki H

    8.2 YUTAKI H If it is necessary to access to the indoor unit components, please follow these operations. 8.2.1 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 113: Removing Indoor Unit Electrical Box

    8.2.2 Removing 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 114: Space Heating Pipes Connection

    CAUTION Take care with the electrical box components in order to avoid damaging it. 8.2.3 Space heating pipes connection The unit is factory supplied with two shut-off valves which have to be connected to the water inlet / outlet connections. With these shut-off 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 1-1/4”...

  • Page 115: Cover Assembly

    8.2.4 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 loca- tions).
  • Page 116 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 screw which had been previously removed during the unpacking procedure. (x2) Both sides PMML0600 rev.0 - 06/2022...

  • Page 117: Yutaki H Combi

    8.3 YUTAKI H Combi If it is necessary to access to the indoor unit components, please follow these operations. 8.3.1 Removing the indoor unit covers NOTE • Front cover needs to be removed for any task inside the indoor unit. •...

  • Page 118: Removing Indoor Unit Electrical Box

    8.3.2 Removing 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 119: Space Heating Pipes Connection

    ◆ Open the electrical box cover 1 Remove the indoor unit front cover. 2 Unscrew the 2 front screws of the electrical box cover and then, open it. CAUTION Take care with the electrical box components in order to avoid damaging it. 8.3.3 Space heating pipes connection The unit is factory supplied with two shut-down valves to be connected to the water inlet/outlet pipe.

  • Page 120: Dhw Pipes Connection

    8.3.4 DHW pipes connection The connection between the DHW installation and the DHW connections of the indoor unit must be done taking into account the following considerations: 1 Install a pressure and temperature relief valve at the DHW inlet connec tion (as close as possi- ble to the tank) to provide the following functions.
  • Page 121 • Discharge pipe must be made of metal or any other material capable to withstand the high pressure and high temperature from the P&T relief valve. • For a correct installation and workpipe of the discharge pipe on UK market models, refer to UK Building Requirements PMML0600 rev.0 - 06/2022...
  • Page 122 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. PMML0600 rev.0 - 06/2022 Printed in Spain...

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