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Hitachi airH2O 600 Series Installation And Operation Manual
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Hitachi airH2O 600 Series Installation And Operation Manual

Hitachi airH2O 600 Series Installation And Operation Manual

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INSTALLATION
AND OPERATION
MANUAL
600
S SERIES
INDOOR UNITS
MODELS
SPLIT SYSTEM
RWM-(1.5-10.0)(N/R)3E
PMEN0667 rev.0 - 07/2025

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Summary of Contents for Hitachi airH2O 600 Series

  • Page 1 – INSTALLATION AND OPERATION MANUAL S SERIES INDOOR UNITS MODELS SPLIT SYSTEM RWM-(1.5-10.0)(N/R)3E PMEN0667 rev.0 - 07/2025...
  • Page 2 Contents General information .....................1 Name of parts and dimensional data ..............8 Electrical data .....................12 Working range ....................16 Refrigerant and water piping ................25 Electrical and control settings ................47 Maintenance.......................71 Commissioning ....................77 ERP Data ......................84 PMEN0667 rev.0 - 07/2025...
  • Page 3 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 4 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 5 Anglická verzia je pôvodná, ďalšie jazyky sú preložené z angličtiny. V prípade akýchkoľvek nezrovnalostí medzi anglickou a preloženou verziou, bude rozhodujúca anglická verzia. Англійська версія є оригінальною; інші мови переведені з англійської. У разі виникнення розбіжностей між англійською та перекладеною версіями, англійська версія має переважну силу. İngilizce sürüm orijinal olup diğer diller İngilizce’den çevrilmiştir.
  • Page 6 General Index 1. General information ....................1 1.1 General information ..................2 1.1.1 General notes ..................2 1.2 Applied symbols....................3 1.3 Additional information about safety ..............4 1.4 Important notice ....................5 1.5 Product guide ....................6 1.5.1 Classification of the units ................6 1.5.1.1 Split system - Indoor unit - airH2O 600S ........6 1.5.2 Product list ....................6 1.5.2.1 Split system - Indoor unit - airH2O 600S ........7 2. Name of parts and dimensional data .................8 2.1 airH2O 600S RWM-(1.5-3.5)R3E ...............9 2.2 airH2O 600S RWM-(3.5-6.0)R3E ..............10 2.3 airH2O 600S RWM-(8.0/10.0)N3E ..............11...
  • Page 7 4.2.2 DHW .......................19 4.2.3 Swimming pool heating .................20 4.2.4 Space cooling (Necessary cooling kit) ...........21 4.3 Hydraulic working range ..................22 4.3.1 Hydraulic data ..................22 4.3.2 Pump performance curves ..............23 5. Refrigerant and water piping ..................25 5.1 General notes before performing piping work ..........26 5.2 R410A Refrigerant circuit ................27 5.3 Refrigerant circuit ....................28 5.3.1 General notes R32 refrigerant ...............28 5.4 Refrigerant piping ....................28 5.4.1 Refrigerant piping size ................28 5.4.2 Refrigerant piping length between indoor unit and outdoor unit (for R32 units) ....................29 5.4.2.1 Minimum floor area for R32 units ...........32 5.4.3 Refrigerant piping length between indoor unit and outdoor unit (R410A units) ..................36 5.5 Refrigerant charge ...................37 5.5.1 Refrigerant charge amount ..............37 5.5.1.1 Refrigerant charge before shipment (W (kg)) ......37...
  • Page 8 5.6.3.1 Water filling ................39 5.6.4 Requirements and recommendations for the hydraulic circuit ....41 5.6.5 Water flow control .................43 5.7 Space heating and DHW ..................43 5.7.5.1  A dditional hydraulic necessary elements for space heating ...43 5.7.5.2 Additional hydraulic optional elements (For DHW) ....46 6. Electrical and control settings ..................47 6.1 General check ....................48 6.2 Electrical connection ..................50 6.2.1 Wiring size .....................50 6.2.2 Minimum requirements of the protection devices ......52 6.3 Setting of DIP switches and RSW switches ............54 6.3.1 Location of DIP switches and rotary switches ........54 6.3.1.1 Function of DIP switches and rotary switches ......54 6.3.1.2 LED indication ................58 6.4 Terminal board connections ................59 6.4.1 Table board 1 ..................59 6.4.2 Table board 2 ..................60 6.4.2.1  I ndoor/outdoor communication wiring (TB2) / ATW-RTU Communication / Central Devices Communication ..
  • Page 9 7.3 Space heating pipes connection ..............74 7.4 Drain pipes connection ..................74 7.5 Cover assembly ....................75 7.6 Test and check ....................76 8. Commissioning ......................77 8.1 Before operation ....................78 8.2 Preliminary check ....................78 8.2.1 Checking the unit ...................78 8.2.2 Electrical checking .................78 8.2.3  H ydraulic circuit checking (space heating and DHW) ......79 8.2.4 Checking the refrigerant circuit .............80 8.3 Commissioning procedure ................80 8.3.1 Commissioning from unit controller .............81 8.3.1.1 Screed drying function .............83 8.3.2 NFC Tap Function ...................83 9. ERP Data ........................84 9.1 AVERAGE climate .....................85 9.2 WARMER climate .....................88...
  • Page 10 General information 1.1 General information ..................2 1.1.1 General notes ..................2 1.2 Applied symbols....................3 1.3 Additional information about safety ..............4 1.4 Important notice ....................5 1.5 Product guide ....................6 1.5.1 Classification of the units ................6 1.5.1.1 Split system - Indoor unit - airH2O 600S ........6 1.5.2 Product list ....................6 1.5.2.1 Split system - Indoor unit - airH2O 600S ........7 PMEN0667 rev.0 - 07/2025...
  • Page 11 General information 1.1.1 General notes © Copyright 2025 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. – All rights reserved. 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.
  • Page 12 Applied symbols During normal heat pump system design work or unit installation, greater attention must be paid in certain situations requiring particular care in order to avoid damage the unit, the installation or the building or property. Situations endangering the safety of those in the surrounding area or to the unit itself are clearly indicated in this manual.
  • Page 13 Additional information about safety DANGER • DO NOT CONNECT THE POWER SUPPLY TO THE INDOOR UNIT PRIOR TO FILLING THE SPACE HEATING CIRCUIT (AND DHW CIRCUIT IF IT WAS THE CASE) WITH WATER AND CHECKING WATER PRESSURE AND THE TOTAL ABSENCE OF ANY WATER LEAKAGE. •...
  • Page 14 If this is not the case, contact your distributor. • Hitachi pursues a policy of continuous improvement in product design and performance. The right is therefore reserved to vary specifications without notice.
  • Page 15 Product guide 1.5.1 Classification of the units 1.5.1.1 Split system - Indoor unit - airH2O 600S Unit type: airH2O 600S (Split system - Single water module (Indoor unit) - Medium/Low temperature) Position-separating hyphen (fixed) Compressor power of the combined outdoor unit (HP): 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0, 8.0, 10.0 N: R410A refrigerant R: R32 refrigerant 3: series...
  • Page 16 1.5.2.1 Split system - Indoor unit - airH2O 600S ( ) ( ~ 230V 50Hz 3N~ 400V 50Hz RWM-1.5R3E RWM-1.5R3E RWM-2.0R3E RWM-2.0R3E RWM-2.5R3E RWM-2.5R3E RWM-3.0R3E RWM-3.0R3E RWM-3.5R3E RWM-3.5R3E RWM-4.0R3E RWM-4.0R3E RWM-5.0R3E RWM-5.0R3E RWM-6.0R3E RWM-6.0R3E RWM-8.0N3E RWM-10.0N3E For cooling operation, refer to the Cooling kit accessory for airH2O 600S units. PMEN0667 rev.0 - 07/2025...
  • Page 17 Name of parts and dimensional data 2.1 airH2O 600S RWM-(1.5-3.5)R3E ...............9 2.2 airH2O 600S RWM-(3.5-6.0)R3E ..............10 2.3 airH2O 600S RWM-(8.0/10.0)N3E ..............11 PMEN0667 rev.0 - 07/2025...
  • Page 18 airH2O 600S RWM-(1.5-3.5)R3E Plate heat exchanger Front view Water pump Side view Electric water heater Expansion vessel 6 l Water strainer View from A Air purger Water pressure sensor Safety valve Drain pipe for safety valve Expansion valve Manometer Refrigerant strainer (x2) Unit controller Electrical box Switch for DHW emergency operation...
  • Page 19 airH2O 600S RWM-(3.5-6.0)R3E Front view Side view Plate heat exchanger Water pump Electric water heater View from A Expansion vessel 6 l Water strainer Air purger Water pressure sensor Safety valve Drain pipe for safety valve Expansion valve Manometer Refrigerant strainer (x2) Unit controller Electrical box Switch for DHW emergency operation...
  • Page 20 airH2O 600S RWM-(8.0/10.0)N3E Front view Side view Plate heat exchanger Water pump Electric water heater Expansion vessel 10L Water strainer Air purger Water pressure sensor Safety valve Drain pipe for safety valve Expansion valve (x2) Manometer Refrigerant strainer (x4) Unit controller Electrical box Switch for DHW emergency operation Water inlet pipe connection - G 1 1/4”...
  • Page 21 Electrical data 3.1 Considerations ....................13 3.2 airH2O 600S - RWM-(1.5-6.0)R3E ..............14 3.3 airH2O 600S - RWM-(8.0/10.0)N3E ..............15 PMEN0667 rev.0 - 07/2025...
  • Page 22 » 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 23 3.2 airH2O 600S - RWM-(1.5-6.0)R3E Applicable Max. voltage Operation mode Model Power supply U max. U min. (kW) (kW) Without electric heater 0.6 0.06 0.6 0.06 With electric heater 13.6 3.06 13.7 3.06 ~ 230V 50Hz With DHW tank heater 13.6 3.06 13.7 3.06 With electric and DHW tank heaters 26.7 6.06 26.7 6.06...
  • Page 24 3.3 airH2O 600S - RWM-(8.0/10.0)N3E Applicable Max. voltage Operation mode Model Power supply U max. U min. (kW) (kW) Without electric heater 0.14 1.16 0.14 With electric heater 13.2 9.14 14.2 9.14 3N~ 400V 50Hz With DHW tank heater 3.14 14.2 3.14 With electric and DHW tank heaters...
  • Page 25 Working range 4.1 Power supply working range ................17 4.2 Temperature working range ................17 4.2.1 Space heating ..................17 4.2.2 DHW .......................19 4.2.3 Swimming pool heating .................20 4.2.4 Space cooling (Necessary cooling kit) ...........21 4.3 Hydraulic working range ..................22 4.3.1 Hydraulic data ..................22 4.3.2 Pump performance curves ..............23 PMEN0667 rev.0 - 07/2025...
  • Page 26 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 27    ◆ Split system - airH2O 600S (3.5- 6.0 HP) Continuous working range Heat pump operation possible Starting only back-up heater operation Starting heat pump + back up heater Heat pump + back up heater operation possible Heat pump + back up heater Ambient temperature (°C) Marked areas with only available if back-up heater is...
  • Page 28 4.2.2 DHW    ◆ Split system - airH2O 600S (1.5-3.0 HP) Continuous working range 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 29    ◆ Split system - airH2O 600S (8.0/10.0 HP) Continuous working range Tank heater only Heat pump operation possible Ambient temperature (°C) NOTE In case of heating up the DHW tank with an outdoor ambient temperature lower than -10°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 30    ◆ Split system - airH2O 600S (8.0/10.0 HP) 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) PMEN0667 rev.0 - 07/2025...
  • Page 31 Hydraulic working range 4.3.1 Hydraulic data Model 1.5 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 Model 3.5 HP 4.0 HP 5.0 HP 6.0 HP...
  • Page 32 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 of the indoor unit.
  • Page 33 5.0 HP 6.0 HP Water flow (m Water flow (m 8.0 HP 10.0 HP Water flow (m Water flow (m PMEN0667 rev.0 - 07/2025...
  • Page 34 Refrigerant and water piping 5.1 General notes before performing piping work ..........26 5.2 R410A Refrigerant circuit ................27 5.3 Refrigerant circuit ....................28 5.3.1 General notes R32 refrigerant ...............28 5.4 Refrigerant piping ....................28 5.4.1 Refrigerant piping size ................28 5.4.2 Refrigerant piping length between indoor unit and outdoor unit (for R32 units) ....................29 5.4.2.1 Minimum floor area for R32 units ...........32 5.4.3 Refrigerant piping length between indoor unit and outdoor unit (R410A units) ..................36 5.5 Refrigerant charge ...................37 5.5.1 Refrigerant charge amount ..............37 5.5.1.1 Refrigerant charge before shipment (W (kg)) ......37...
  • Page 35 5.1 General notes before performing piping work • Prepare locally-supplied copper pipes. • Select the piping size with the correct thickness and correct material able to withstand sufficient pressure. • Select clean copper pipes. Make sure that there is no dust or moisture inside the pipes. Blow the inside of the pipes with oxygen free nitrogen to remove any dust and foreign materials before connecting them.
  • Page 36 5.2 R410A Refrigerant circuit    ◆ Precautions in the event of gas refrigerant leaks The installers and those responsible for drafting the specifications are obliged to comply with local safety codes and regulations in the case of refrigerant leakage. CAUTION •...
  • Page 37 5.3 Refrigerant circuit 5.3.1 General notes R32 refrigerant This appliance is filled with R32, an odourless flammable refrigerant gas with low burning velocity (A2L class pursuant to ISO 817). If the refrigerant is leaked, there is a possibility of ignition if it enters in contact with an external ignition source. Make sure that unit installation and refrigerant piping installation comply with applicable legislation in each country.
  • Page 38 5.4.2 Refrigerant piping length between indoor unit and outdoor unit (for R32 units) The unit installation and refrigerant piping should comply with the relevant local and national regulations for the designed refrigerant. Due to R32 refrigerant and depending on final refrigerant charge amount, a minimum floor area for installation must be considered.
  • Page 39    ◆ Indoor unit in combination with RAS-3.5-6WHVRP2E Heating only (factory default) L≤30m 3.5HP Factory Charge 10(*) 10(*) 10(*) 10(*) Charge-less piping length Additional charge needed Maximum piping length Maximum additional refrigerant charge Maximum total refrigerant charge Minimum room area requirement (Amin) Check minimum floor area table Minimum piping length between outdoor unit and indoor unit (Lmin) Maximum height difference between indoor and outdoor unit (H)
  • Page 40 Reversible models (Cooling and Heating) (charge by installer) L≤30m 3.5HP Factory Charge Additional charge for reversible models (mandatory by installer) Charge-less piping length Additional refrigerant charge Maximum piping length Maximum additional charge (kg) Maximum total refrigerant charge Minimum room area requirement (Amin) Check minimum floor area table Minimum piping length between outdoor unit and indoor unit (Lmin) Maximum height difference between indoor and outdoor unit (H)
  • Page 41 5.4.2.1 Minimum floor area for R32 units Please refer to outdoor unit installation manual for charge calculation. 1 Check the refrigerant charge: a. If the refrigerant charge is <1.84 kg, no minimum area is required. b. If the refrigerant charge is >1.84 kg, check the Table 1 for minimum floor area (A 2 Calculate the room area: a.
  • Page 42 Room A >1.5 m >0,5 VA Room A + Room B NOTE In case of not able to proceed with any of option above. Please consider to select other outdoor unit combination option (reduce piping length, monobloc systems, etc...). PMEN0667 rev.0 - 07/2025...
  • Page 43    ◆ Table 1 Min floor area (A ) (m (Kg) 1.84 7.20 6.15 5.71 5.33 4.99 4.70 4.44 4.21 8.51 4.82 7.25 6.25 5.79 5.43 5.11 4.57 8.77 10.30 7.57 6.59 5.97 5.62 5.31 5.03 7.84 6.89 5.48 12.26 10.44 9.00 6.13...
  • Page 44 Minimum opening for natural ventilation A =1.5 m nvmin1 (Kg) Room A area (m 1.84 0.36 0.89 1.42 0.27 0.85 1.95 2.48 1.43 0.35 3.01 2.01 0.97 0.27 3.54 2.59 1.59 0.91 4.07 3.17 2.21 1.55 0.56 2.83 4.60 3.75 2.19 1.23 0.59...
  • Page 45 : room A area, in m • A roomA : the allowable maximum refrigerant charge in the room A, in kg. • m • Mark “-” in the above table indicates that the room A is large enough for installation without adjacent room B.
  • Page 46 5.5 Refrigerant charge 5.5.1 Refrigerant charge amount The refrigerant is factory charged in the outdoor unit. 5.5.1.1 Refrigerant charge before shipment (W (kg)) Outdoor unit model Refrigerant (kg) RAS-1.5WHVRP2E RAS-2WHVRP2E RAS-2.5WHVRP2E RAS-3WHVRP2E RAS-3.5WH(V)RP2E RAS-4WH(V)RP2E RAS-5WH(V)RP2E RAS-6WH(V)RP2E RAS-8WHNPE R410A RAS-10WHNPE R410A 5.6 Water piping 5.6.1 Water piping length Consider the following guidelines when designing the water circuit.
  • Page 47 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 48 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. 5.6.3.1 Water filling   ...
  • Page 49 manually so as to help with the air purging procedure. 6 Remove as much air from inside the water circuit as possible through the indoor 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 50    ◆ Domestic hot water tank If a domestic hot water tank has been installed, perform the following operations: Heating coil circuit Fill the DHW tank heating coil from the space heating circuit filling in point. Follow the instructions “5.6.3.1 Water filling” chapter to correctly perform the operation.
  • Page 51 • For heating floor system, the air should be purged by means of an external pump and an open circuit to avoid air bags. • When the unit is stopped during shut-off 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 52 5.6.5 Water flow control airH2O 600 pumps can estimate the water flow by electronic calculation. Therefore, there is no need to install a water flow switch with the new airH2O 600 pumps. However, if a secondary pump is installed, it is necessary to install a water flow control, as the electronic calculation may be affected.
  • Page 53 ◆ Additional hydraulic necessary elements for DHW airH2O 600 Nature Part name Water inlet (Space heating) Water outlet (Space heating) Heating coil inlet Piping connections Heating coil outlet Water inlet (DHW) Water outlet (DHW) Factory supplied Shut-off valve (factory-supplied) Domestic hot water tank (DHWT-(200/300)S-3.0H2E accessory) Accessories 3-way valve (ATW-3WV-01 accessory) T-branch...
  • Page 54 Additionally, the following elements are required for the DHW circuit: DHW TANK Nature 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 •...
  • Page 55 • 1 Recirculation water pump (field supplied): this water pump (3) will help to correctly recirculate the hot water to the DHW inlet. • 1 Water check valve (ATW-WCV-01 accessory): this Hitachi accessory (3) is connected after the recirculation water pump (4) in order to ensure the non-return of water.
  • Page 56 Electrical and control settings 6.1 General check ....................48 6.2 Electrical connection ..................50 6.2.1 Wiring size .....................50 6.2.2 Minimum requirements of the protection devices ......52 6.3 Setting of DIP switches and RSW switches ............54 6.3.1 Location of DIP switches and rotary switches ........54 6.3.1.1 Function of DIP switches and rotary switches ......54 6.3.1.2 LED indication ................58 6.4 Terminal board connections ................59 6.4.1 Table board 1 ..................59 6.4.2 Table board 2 ..................60 6.4.2.1  I ndoor/outdoor communication wiring (TB2) / ATW-RTU Communication / Central Devices Communication ....60 6.4.2.2 Summary of terminal board connections ........61 6.4.2.3 Input terminals (Default input functions) ........63 PMEN0667 rev.0 - 07/2025...
  • Page 57 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 airH2O 600 system (outdoor unit + indoor unit + DHW tank (if apply)). ✓...
  • Page 58 The status of Harmonics for each model, regarding compliance with EN 61000-3-2 and EN 61000-3-12 is as follows: Models RWM-1.5R3E(~1)(~3N) RWM-2.0R3E(~1)(~3N) RWM-2.5R3E(~1)(~3N) RWM-3.0R3E(~1)(~3N) RWM-3.5R3E(~3N) Equipment complying with EN 61000-3-2 RWM-4.0R3E(~3N) RWM-5.0R3E(~3N) RWM-6.0R3E(~3N) RWM-8.0N3E(~3N) RWM-10.0N3E(~3N) RWM-3.5R3E(~1) RWM-4.0R3E(~1) Equipment complying with EN 61000-3-12 RWM-5.0R3E(~1) RWM-6.0R3E(~1) •...
  • Page 59 6.2 Electrical connection 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 60 Transmitting Actuator Maximum Power supply cables cables cables Power supply Operation mode Model current EN60335-1 EN60335-1 EN60335-1 Without electric 0.66 2 x 0.75 mm² + GND heaters With electric heater 26.7 2 x 6 mm² + GND ~ 230V 50Hz With DHW tank heater 13.7 2 x 2.5 mm²...
  • Page 61 6.2.2 Minimum requirements of the protection devices CAUTION • Ensure specifically that there is an Earth Leakage Breaker (ELB) installed for the units (outdoor and indoor unit). • If the installation is already equipped with an Earth Leakage Breaker (ELB), ensure that its rated current is large enough to hold the current of the units (outdoor and indoor unit).
  • Page 62 Power supply Operation mode Model current (A) (nº of poles/A/mA) Without electric heaters 0.66 With electric heater 26.7 2/40/30 ~ 230V 50Hz With DHW tank heater 13.7 With electric and DHW tank heaters 39.8 2/63/30 Without electric heaters With electric heater 3N~ 400V 4/40/30 50Hz...
  • Page 63 6.3 Setting of DIP switches and RSW switches 6.3.1 Location of DIP switches and rotary switches 6.3.1.1 Function of DIP switches and rotary switches NOTE • The mark “” indicates the dip switches positions. • No mark “” indicates pin position is not affected. •...
  • Page 64    ◆ DSW1: Additional setting 0 Factory setting. No setting is required. DSW1 airH2O 600S (*) 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 65 DSW4 DHW defrost Heater forced OFF 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 • Never turn all DSW4 dip switch pins ON. If this happens, the software of the unit will be removed. •...
  • Page 66 DSW5 Auxiliary sensor for circuit 1; Outdoor unit sensor for circuit 2 Auxiliary sensor instead of outdoor unit sensor for both circuits Use the maximum temperature value between Two3 (boiler / heater thermistor) and Two (water outlet thermistor) for water control   ...
  • Page 67    ◆ DSW16 & RSW1: Not used DSW16 & RSW1 Factory setting (Do not change)    ◆ DSW18: Not used DSW18 Factory setting (Do not change)    ◆ SSW1: Remote/Local SSW1 Factory setting Remote Remote operation Local Remote Local operation Local   ...
  • Page 68 6.4 Terminal board connections 6.4.1 Table board 1    ◆ Main power supply The main power supply connection is wired to the Terminal board (TB1) as follows: Outdoor unit RAS-WHVRP2E Earth Earth Operating Line (Twisted shielded pair cable or shielded pair cable) DC5V (Non-Pole Transmission, H-LINK system) Earth...
  • Page 69 6.4.2 Table board 2 6.4.2.1  Indoor/outdoor communication wiring (TB2) / ATW-RTU Communication / Central Devices Communication • The transmission is wired to terminals 1-2. • The H-LINK II wiring system requires only two transmission cables that connect the indoor unit and the outdoor unit in case of split system and also connect the indoor unit with ATW-RTU-07 or Central devices like ATW-KNX-02 and Cascade controller (ATW-YCC-04) or ATW-TYD-01.
  • Page 70 6.4.2.2 Summary of terminal board connections Description Mark Part name TERMINAL BOARD 1 (TB1) ~ 230V 50Hz 3N~ 400V 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 commutation terminals 1-2 of either outdoor unit, ATW-RTU or any other central device.
  • Page 71 Description Mark Part name 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. Available input for an instantaneous heating of the domestic hot water of Input 6 (DHW boost) (*) the tank.
  • Page 72 6.4.2.3 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-07 Only for wireless room thermostat accessory: the receiver is connected to the polarity-free terminals 1 and 2.
  • Page 73    ◆ DHWT Thermistor (T DHWT 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. DHWT DHWT   ...
  • Page 74    ◆ Optional wireless ON/OFF room thermostat ATW-RTU-04 The heat pump system has been designed to allow the connection of a remote ON/OFF thermostat to effectively control the home temperature. Depending on the room temperature, the thermostat will turn the system to ON or OFF. a.
  • Page 75    ◆ ECO (Default for input 2) When enabled at Unit controller, both for circuit 1 and circuit 2, also for heating and cooling, this input switches the indoor unit into an ECO mode by adjusting its settings only when input is closed. The input can come from a push button, a thermostat or any other external device with that purpose.
  • Page 76    ◆ 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 77    ◆ 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 78 ≤ 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).    ◆ 3 Way valve for DHW tank output airH2O 600 units can be used to heat DHW. The signal is used on a 3-way motorized diverting valve...
  • Page 79    ◆ 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 80 Maintenance 7.1 Removing the covers ..................72 7.1.1 Removing the indoor unit service cover ..........72 7.2 Removing indoor unit electrical box ...............73 7.3 Space heating pipes connection ..............74 7.4 Drain pipes connection ..................74 7.5 Cover assembly ....................75 7.6 Test and check ....................76 PMEN0667 rev.0 - 07/2025...
  • Page 81 Removing the covers If it is necessary to access to the indoor unit components, please follow these operations. 7.1.1 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 82 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 83 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.
  • Page 84 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 85 4 Fix the indoor unit service cover using the screw which had been previously removed during the unpacking procedure. (x2) Both sides Test and check Finally, test and check the following items: • Water leakage • Refrigerant leakage • Electrical connection •...
  • Page 86 Commissioning 8.1 Before operation ....................78 8.2 Preliminary check ....................78 8.2.1 Checking the unit ...................78 8.2.2 Electrical checking .................78 8.2.3  H ydraulic circuit checking (space heating and DHW) ......79 8.2.4 Checking the refrigerant circuit .............80 8.3 Commissioning procedure ................80 8.3.1 Commissioning from unit controller .............81 8.3.1.1 Screed drying function .............83 8.3.2 NFC Tap Function ...................83 PMEN0667 rev.0 - 07/2025...
  • Page 87 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 88 • Check to ensure that the switch on the main power source has been ON for more than 12 hours, in order to give the oil heater time to warm the compressor. • In three-phase unit check phase sequence connection on terminal board. •...
  • Page 89 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 “6.3 Setting of DIP switches and RSW...
  • Page 90 8.3.1 Commissioning from unit controller This menu shows the following test to be launched: • Air Purge Procedure: Air purge function drives the pump in a way for evacuating air bubbles in the installation. • Unit Test Run: Test run is a working mode used when commissioning the installation. Some settings are made to let the installer an easy job.
  • Page 91 During the execution of this test, the following screen is shown: • When the test starts, the user controller will exit from the installer mode. • User can cancel the test run regardless of the time left for test finishing. •...
  • Page 92 8.3.1.1 Screed drying function The screed function is used exclusively for the process of drying a newly applied screed to the floor heating system. The process is based on EN-1264 par 4. Users can activate the screed function in either standard or custom mode:   ...
  • Page 93 ERP Data 9.1 AVERAGE climate .....................85 9.2 WARMER climate .....................88 9.3 COLDER climate ....................89 9.4 Additional data ....................90 9.5 G eneral ERP data for hot water storage tanks ..........91 PMEN0667 rev.0 - 07/2025...
  • Page 94 9.1 AVERAGE climate 1.5 HP 2.0 HP 2.5 HP 3.0 HP Outdoor unit RAS-1.5WH(V)RP2E RAS-2WH(V)RP2E RAS-2.5WH(V)RP2E RAS-3WH(V)RP2E RWM-1.5R3E RWM-2.0R3E RWM-2.5R3E RWM-3.0R3E Indoor unit RWD-1.5RW3E-220S(-K) RWD-2.0RW3E-220S(-K) RWD-2.5RW3E-220S(-K) RWD-3.0RW3E-220S(-K) Water outlet temperature 35°C 55°C 35°C 55°C 35°C 55°C 35°C 55°C Air to water heat pump Heat pump combination heater Product description Low temperature heat pump...
  • Page 95 3.5 HP 4.0 HP 5.0 HP 6.0 HP Outdoor unit RAS-3.5WH(V)RP2E RAS-5WH(V)RP2E RAS-3.5WH(V)RP2E RAS-5WH(V)RP2E RWM-3.5R3E RWM-4.0R3E RWM-5.0R3E RWM-6.0R3E Indoor unit RWD-3.5RW3E-220S(-K) RWD-4.0RW3E-220S(-K) RWD-5.0RW3E-220S(-K) RWD-6.0RW3E-220S(-K) Water outlet temperature 35°C 55°C 35°C 55°C 35°C 55°C 35°C 55°C Air to water heat pump Heat pump combination heater Product description Low temperature heat pump...
  • Page 96 8.0 HP 10.0 HP Outdoor unit RAS-8WHNPE RAS-10WHNPE Indoor unit RWM-8.0N3E RWM-10.0N3E Water outlet temperature 35°C 55°C 35°C 55°C Air to water heat pump Heat pump combination heater Product description Low temperature heat pump Complementary heater Design capacity (P DESIGN Nominal energy efficiency (η...
  • Page 97 9.2 WARMER climate 1.5 HP 2.0 HP 2.5 HP 3.0 HP Outdoor unit RAS-1.5WH(V)RP2E RAS-2WH(V)RP2E RAS-2.5WH(V)RP2E RAS-3WH(V)RP2E RWM-1.5R3E RWM-2.0R3E RWM-2.5R3E RWM-3.0R3E Indoor unit RWD-1.5RW3E-220S(-K) RWD-2.0RW3E-220S(-K) RWD-2.5RW3E-220S(-K) RWD-3.0RW3E-220S(-K) Design capacity (P DESIGN Nominal energy efficiency (η 172 (181) 185 (194) 165 (171) 170 (175) SCOP 4.38 (4.60)
  • Page 98 9.3 COLDER climate 1.5 HP 2.0 HP 2.5 HP 3.0 HP Outdoor unit RAS-1.5WH(V)RP2E RAS-2WH(V)RP2E RAS-2.5WH(V)RP2E RAS-3WH(V)RP2E RWM-1.5R3E RWM-2.0R3E RWM-2.5R3E RWM-3.0R3E Indoor unit RWD-1.5RW3E-220S(-K) RWD-2.0RW3E-220S(-K) RWD-2.5RW3E-220S(-K) RWD-3.0RW3E-220S(-K) Design capacity (P DESIGN Nominal energy efficiency (η 110 (111) 112 (113) 106 (107) 113 (113) SCOP 2.84 (2.86)
  • Page 99 9.4 Additional data 1.5 HP 2.0 HP 2.5 HP 3.0 HP Outdoor unit RAS-1.5WH(V)RP2E RAS-2WH(V)RP2E RAS-2.5WH(V)RP2E RAS-3WH(V)RP2E RWM-1.5R3E RWM-2.0R3E RWM-2.5R3E RWM-3.0R3E Indoor unit RWD-1.5RW3E-220S(-K) RWD-2.0RW3E-220S(-K) RWD-2.5RW3E-220S(-K) RWD-3.0RW3E-220S(-K) Electrical power input in stand-by mode (Psb) 11.9 11.9 11.9 11.9 Electrical power input in thermostat-OFF mode (Pto) Electrical power input in OFF mode (Poff) 11.9 11.9...
  • Page 100 9.5 General ERP data for hot water storage tanks DHWT-200S-3.0H2E DHWT-300S-3.0H2E Model Storage volume Standing loss 47.3 62.8 Energy efficiency class PMEN0667 rev.0 - 07/2025...
  • Page 102 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. PMEN0667 rev.0 - 07/2025...

This manual is also suitable for:

Airh2o 600s rwm-1.5r3eAirh2o 600s rwm-3.5r3eAirh2o 600s rwm-6.0r3eAirh2o 600s rwm-8.0n3eAirh2o 600s rwm-10.0n3e