Hitachi YUTAKI M RASM-2VR2E Installation And Operation Manual
  1. Manuals
  2. Brands
  3. Hitachi Manuals
  4. Air Conditioner
  5. YUTAKI M RASM-2VR2E
  6. Installation and operation manual
Hitachi YUTAKI M RASM-2VR2E Installation And Operation Manual

Hitachi YUTAKI M RASM-2VR2E Installation And Operation Manual

Outdoor units monobloc system
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
–
INSTALLATION
AND OPERATION
MANUAL
–
YUTAKI M
OUTDOOR UNITS
MODELS
MONOBLOC SYSTEM
RASM-(2/3)VR2E
PMEN0647 rev.0 - 11/2023

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the YUTAKI M RASM-2VR2E and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Hitachi YUTAKI M RASM-2VR2E

Summary of Contents for Hitachi YUTAKI M RASM-2VR2E

  • Page 1 – INSTALLATION AND OPERATION MANUAL – YUTAKI M OUTDOOR UNITS MODELS MONOBLOC SYSTEM RASM-(2/3)VR2E PMEN0647 rev.0 - 11/2023...
  • 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 English Original version Español Versión traducida Deutsch Übersetzte Version Français Version traduite Italiano Versione tradotta Português Versão traduzidal Dansk Oversat version Nederlands Vertaalde versie Svenska Översatt version Ελληνικα Μεταφρασμένη έκδοση...

  • Page 4: Table Of Contents

    Contents General Information .....................1 Name of parts and dimensional data ..............6 Electrical data .......................8 Working range ....................10 Drain and water piping ..................14 Electrical and control settings ................31 Commissioning ....................56 Maintenance.......................63 ERP Data ......................69 PMEN0647 rev.0 - 11/2023...
  • Page 5 General Index 1. General Information ....................1 1.1 General information ..................2 1.2 Applied Symbols ....................2 1.3 Product guide ....................4 1.3.1 Classification of the units ................4 1.3.1.1 Monobloc system - YUTAKI M R32 - RASM-(2/3)VR2E ....4 1.4 Product list ......................4 1.4.1 Monobloc system - YUTAKI M R32 - RASM-(2/3)VR2E ......4 1.4.2 Unit Controller Accessory ................5 2. Name of parts and dimensional data .................6...
  • Page 6 4.3.2 Pump performance curves ..............13 5. Drain and water piping .....................14 5.1 Water Drain Discharge Connection (Accessory) ..........15 5.1.1 Connecting procedure ................15 5.2 Outdoor Unit Draining Operation ..............16 5.3 Hydraulic Connections for YUTAKI M ..............16 5.4 Space heating and DHW for YUTAKI M ............17 5.4.1 ...
  • Page 7 6.3 Optional unit wiring for accessories ..............35 6.3.1 Summary of the terminal board connections ........35 6.3.2 Input terminals (Default input functions) ..........37 6.4 Setting of DIP switches and RSW switches ............46 6.4.1 Refrigerant cycle PCB ................47 6.4.1.1 DSW1 ..................47 6.4.1.2 DSW2 ..................47 6.4.1.3 DSW3 ..................47 6.4.1.4  DSW4 / RSW1 ................48 6.4.1.5 ...
  • Page 8 6.4.2.11 SSW1 ..................55 6.4.2.12 SSW2 ..................55 6.4.2.13 LED indication .................55 7. Commissioning ......................56 7.1 Before operation ....................57 7.2 Preliminary check ....................57 7.2.1 Checking the unit ...................57 7.2.2 Electrical checking .................57 7.2.3 Hydraulic circuit checking (space heating and DHW) ......58 7.2.4 Checking the refrigerant circuit .............58 7.2.5 Test and check ..................59 7.3 Commissioning procedure ................59 7.4 Test run / air purge ..................60 8. Maintenance...

  • Page 9: General Information

    General Information 1.1 General information ..................2 1.2 Applied Symbols ....................2 1.3 Product guide ....................4 1.3.1 Classification of the units ................4 1.3.1.1 Monobloc system - YUTAKI M R32 - RASM-(2/3)VR2E ....4 1.4 Product list ......................4 1.4.1 Monobloc system - YUTAKI M R32 - RASM-(2/3)VR2E ......4 1.4.2 Unit Controller Accessory ................5 PMEN0647 rev.0 - 11/2023...

  • Page 10: 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 11 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 12: Product Guide

    1.3 Product guide 1.3.1 Classification of the units 1.3.1.1 Monobloc system - YUTAKI M R32 - RASM-(2/3)VR2E Unit type: Monobloc system - Single water module (Outdoor unit) - Low/Medium temperature Position-separating hyphen (fixed) Compressor power (HP): 2.0, 3.0 V: Single phase unit (~ 230V 50Hz) R32 refrigerant Serie 2 Made in Europe...

  • Page 13: Unit Controller Accessory

    1.4.2 Unit Controller Accessory Unit controller accessory is sold separately for RASM-(2/3)VR2E units: Accessory Name Picture Unit controller PC-ARFH2E Wired room thermostat for YUTAKI RASM-(2/3)VR2E PMEN0647 rev.0 - 11/2023...

  • Page 14: Name Of Parts And Dimensional Data

    Name of parts and dimensional data 2.1 YUTAKI M R32 - RASM-(2/3)VR2E ..............7 PMEN0647 rev.0 - 11/2023...

  • Page 15: Yutaki M R32 - Rasm-(2/3)Vr2E

    2.1 YUTAKI M R32 - RASM-(2/3)VR2E Compressor Water side heat exchanger Air side heat exchanger Electrical box Fan (x1) Expansion valve (x2) Reversing valve Accumulator High pressure switch (PSH) Water pump Water outlet - G 1” Water inlet - G1” Water strainer Air purger Stop valve for gas line Ø12.7 (1/5”)

  • Page 16: Electrical Data

    Electrical data 3.1 Considerations ....................9 3.1.1 Monobloc system - YUTAKI M - RASM-(2/3)VR2E ........9 PMEN0647 rev.0 - 11/2023...

  • Page 17: Considerations

    9 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 18: Working Range

    Working range 4.1 Power supply working range ................11 4.2 Temperature working range ................11 4.2.1 Space heating ..................11 4.2.2 DHW .......................12 4.2.3 Swimming pool heating .................12 4.2.4 Space cooling (Necessary cooling kit) ...........12 4.3 R32 Hydraulic working range ................13 4.3.1 Hydraulic data ..................13 4.3.2 Pump performance curves ..............13 PMEN0647 rev.0 - 11/2023...

  • Page 19: 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   ...

  • Page 20: Dhw

    4.2.2 DHW Continuous working range Tank heater only Ambient temperature (°C) NOTE Area marked with only available if DHW tank back-up heater is enabled. 4.2.3 Swimming pool heating Continuous working range Ambient temperature (°C) 4.2.4 Space cooling (Necessary cooling kit) Continuous working range Refreshing floor working area Fan coil working...

  • Page 21: R32 Hydraulic Working Range

    4.3 R32 Hydraulic working range 4.3.1 Hydraulic data MODEL 2.0 HP 3.0 HP Minimum water flow rate (*1) Maximum water flow rate (*1) Minimum installation water volume (*2) liters Minimum allowable water pressure Maximum allowable water pressure NOTE • (*1): Values calculated based on the following conditions: »...

  • Page 22: Drain And Water Piping

    Drain and water piping 5.1 Water Drain Discharge Connection (Accessory) ..........15 5.1.1 Connecting procedure ................15 5.2 Outdoor Unit Draining Operation ..............16 5.3 Hydraulic Connections for YUTAKI M ..............16 5.4 Space heating and DHW for YUTAKI M ............17 5.4.1  A dditional hydraulic necessary elements for space heating ....17 5.4.2  A dditional hydraulic necessary elements for DHW ......18 5.4.3  A dditional hydraulic optional elements (For DHW) ......20 5.4.4 Requirements and recommendations for the hydraulic circuit ....21 5.4.5 Anti-freezing protection for water circuit ..........22 5.4.6 Glycol as anti-freezing protection ............22 5.4.7 Insulation ....................24 5.4.8 Water filling ...................24 5.4.9 Water quality ..................26 5.5 Minimum water volume description ...............27 5.6 Water piping ....................29...

  • Page 23: 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)VR2E 5.1.1 Connecting procedure...

  • Page 24: Outdoor Unit Draining Operation

    5.2 Outdoor Unit Draining Operation YUTAKI M 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 unit in order to ease the operation of draining. When the drain port is installed the draining procedure for the YUTAKI M follows the next steps: 1 Switch OFF the main power of the unit.

  • Page 25: Space Heating And Dhw For Yutaki M

    5.4 Space heating and DHW for YUTAKI M 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 26: Additional Hydraulic Necessary Elements For Dhw

    5.4.2  Additional hydraulic necessary elements for DHW 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) Field supplied Shut-off valve (field supplied) Domestic hot water tank (DHWT-(200/300)S-3.0H2E accessory) Accessories 3-way valve (ATW-3WV-01 accessory)
  • Page 27 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 PMEN0647 rev.0 - 11/2023...

  • Page 28: Additional Hydraulic Optional Elements (For Dhw)

    5.4.3  Additional hydraulic optional elements (For DHW) In case of a recirculation circuit for the DHW circuit: DHW TANK Nature 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 PMEN0647 rev.0 - 11/2023...

  • Page 29: Requirements And Recommendations For The Hydraulic Circuit

    5.4.4 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 30: Anti-Freezing Protection For 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). • Drain taps must be provided at all low points of the installation to permit complete drainage of the circuit during servicing.
  • Page 31 On graphic below, required concentration depending on outside temperature is shown. Frost protection % Volume propylene glycol coolant Burst point acc. to DIN 51583 Frost protection Freezing point according to ASTM D1177 Frost protection % Volume etylene glycol coolant Burst point according to Frost protection Freezing point according to ASTM D1177 DIN 51583...

  • Page 32: Insulation

    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 &...
  • Page 33 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 34: 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 35: Minimum Water Volume Description

    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. 5.5 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.
  • Page 36 Drop in the delivery water temperature that the client is willing to allow in the installation. = Heat loss during defrosting (kW) Heat loss caused in the system by reducing the delivery water temperature, which may affect the user’s comfort level of warmth. This value is the sum of the two following items: = Heat demand from the installation (kW) While defrosting is taking place, the unit is not providing the heat required to cover the heat demand from the installation.

  • Page 37: Water Piping

    5.6 Water piping 5.6.1 Water piping length Consider the following guidelines when designing the water circuit. Item YUTAKI M R32 Maximum water piping length between unit and DHW tank 10 m Maximum water piping length between 3-way valve and DHW tank 10 m Maximum total piping combination 10 m...

  • Page 38: Suspension Of Water Piping

    5.7 Suspension of water piping Suspend the water piping at certain points and prevent the water piping from being in direct contact with the building: walls, ceilings, etc… If there is direct contact between pipes, abnormal sound may occur due to the vibration of the piping.

  • Page 39: Electrical And Control Settings

    Electrical and control settings 6.1 General check ....................33 6.2 Electrical connection ..................34 6.2.1 Wiring size .....................34 6.2.2 Minimum requirements of the protection devices ......34 6.3 Optional unit wiring for accessories ..............35 6.3.1 Summary of the terminal board connections ........35 6.3.2 Input terminals (Default input functions) ..........37 6.4 Setting of DIP switches and RSW switches ............46 6.4.1 Refrigerant cycle PCB ................47 6.4.1.1 DSW1 ..................47 6.4.1.2 DSW2 ..................47 6.4.1.3 DSW3 ..................47 6.4.1.4  D SW4 / RSW1 ................48 6.4.1.5  D SW5 ..................48 6.4.1.6 DSW6 ..................48 6.4.1.7 DSW7 ..................49 6.4.1.8 DSW301 ...................49...
  • Page 40 6.4.2.5 DSW5 ..................53 6.4.2.6 DSW6 (only if available) ............53 6.4.2.7 DSW7 ..................54 6.4.2.8 DSW15 & RSW2 ................54 6.4.2.9 DSW16 & RSW1 ................54 6.4.2.10 DSW18 ..................54 6.4.2.11 SSW1 ..................55 6.4.2.12 SSW2 ..................55 6.4.2.13 LED indication .................55 PMEN0647 rev.0 - 11/2023...

  • Page 41: 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 + DHW tank (if apply)). ✓...

  • Page 42: Electrical Connection

    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 43: Optional Unit Wiring For Accessories

    Applicable voltage Power Model (nº of poles/A/ supply U max (V) U min (V) RASM‑2VR2E 2/40/30 ~ 230V 50Hz RASM‑3VR2E 2/40/30 MC: Maximum current; CB: Circuit breaker; ELB: Earth leakage breaker 6.3 Optional unit wiring for accessories 6.3.1 Summary of the terminal board connections Mark Part name Description...
  • Page 44 Mark Part name Description Available signal which allows to reduce the water setting temperature of Input 2 (ECO mode) (*) circuit 1, circuit 2 or both. Common line Terminal Line common for inputs 3, 4, 5, 6, 7. Only for swimming pool installations: It is necessary to connect an Input 3 (Swimming pool) (*) external input to the air to water heat pump to provide signal when the water pump of swimming pool is ON.

  • Page 45: Input Terminals (Default Input Functions)

    controller, some other inputs and outputs functions can be configured and used. Please, refer to the Service Manual for detailed information. 6.3.2 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 46 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 "6.3.2 Input terminals (Default input functions)"...
  • Page 47 ◆ 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).
  • Page 48 ◆ Swimming pool water temperature thermistor (T    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 49 ◆ 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 50 ◆ 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 TB2.
  • Page 51 DHW temperature by itself. Electrical Heater ≤ 3kW 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). PMEN0647 rev.0 - 11/2023...
  • Page 52 ◆ 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 53 ◆ 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 54: Setting Of Dip Switches And Rsw Switches

    6.4 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 55: Refrigerant Cycle Pcb

    6.4.1 Refrigerant cycle PCB 6.4.1.1 DSW1 ◆ Cancellation of electric current detection    PCB1 DSW1 Factory setting When set pin to ON, the electric current detection is cancelled. Pin should be set back to OFF after electrical work. 6.4.1.2 DSW2 ◆ Optional Function setting   ...

  • Page 56: D Sw4 / Rsw1

    6.4.1.4  DSW4 / RSW1 ◆ Refrigerant cycle selection (No setting is required)    PCB1 DSW4 / RSW1 Factory setting 6.4.1.5  DSW5 ◆ Terminal resistance    PCB1 DSW5 Factory setting 6.4.1.6 DSW6 ◆ No setting is required    PCB1 DSW6 Factory setting PMEN0647 rev.0 - 11/2023...

  • Page 57: Function Selection

    6.4.1.7 DSW7 ◆ Function selection    PCB1 DSW7 Factory setting 6.4.1.8 DSW301 ◆ Test run mode    PCB2 DSW301 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 58: Dsw302

    6.4.1.9 DSW302 ◆ Optional Function setting    PCB2 DSW302 Factory setting Pipe length shorter than 5 m (Short pipe settings) Pipe length longer than 30 m (Long pipe settings) 6.4.1.10 LED indication Name Colour Indication PCB1 LED1 Power LED353 For inspection PCB2 For inspection For inspection For inspection...

  • Page 59: Additional Setting

    6.4.2 Water cycle PCB 6.4.2.1 DSW1 ◆ Additional setting 1    DSW1 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. 6.4.2.2 DSW2 ◆ Unit capacity setting   ...

  • Page 60: Dsw4

    6.4.2.4 DSW4 ◆ Additional setting 2    DSW4 Factory setting 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 Mirror function (YUTAKI Mirror) CAUTION •...
  • Page 61 6.4.2.5 DSW5 ◆ Additional setting 3    DSW5 Factory setting Outdoor unit sensor for circuits 1 and 2. Outdoor unit sensor for circuit 1; Auxiliary sensor for circuit 2. 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 6.4.2.6 DSW6 (only if available)
  • Page 62 6.4.2.7 DSW7 ◆ Additional setting 4    DSW7 Factory setting Compatibility with ATW‑RTU‑04 (When cooling mode operation is needed) 6.4.2.8 DSW15 & RSW2 ◆ Refrigerant cycle address    DSW15 & RSW2 Factory setting Example of system setting with a value of: 5 Refrigerant cycle address setting (Required only when YUTAKI Cascade Controller is installed) 6.4.2.9 DSW16 &...
  • Page 63 6.4.2.11 SSW1 ◆ Remote/Local    SSW1 Remote Factory setting Local Remote Local operation Local NOTE • For units using a Mirror box accessory, SWW1 must be changed to Local. • When DSW4#1 is OFF and it is not required any combination with Mirror box accessory, set SSW1 to Local in order to operate without Remote Controller.

  • Page 64: Commissioning

    Commissioning 7.1 Before operation ....................57 7.2 Preliminary check ....................57 7.2.1 Checking the unit ...................57 7.2.2 Electrical checking .................57 7.2.3 Hydraulic circuit checking (space heating and DHW) ......58 7.2.4 Checking the refrigerant circuit .............58 7.2.5 Test and check ..................59 7.3 Commissioning procedure ................59 7.4 Test run / air purge ..................60 PMEN0647 rev.0 - 11/2023...

  • Page 65: 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 66: Hydraulic Circuit Checking (Space Heating And Dhw)

    • Do not touch any electrical components for more than three minutes after turning OFF the main switch. • Check the DIP switch settings of the unit are connected as shown in the chapter “6.4 Setting of DIP switches and RSW switches”.

  • Page 67: 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 “5.4.8 Water filling” “7.3 Commissioning procedure”. DANGER Do not connect the power supply to the indoor 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 68: Test Run / Air Purge

    • 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 when defrosting or starting at low water temperature conditions.
  • Page 69 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 controller asks for the duration of the test. Example for PC-ARFH2E PMEN0647 rev.0 - 11/2023...
  • Page 70 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 unit. 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 71: Maintenance

    Maintenance 8.1 Removing the upper cover ................64 8.2 Removing the service cover ................65 8.3 Removing the front cover ................66 8.4 Removing the rear cover .................67 PMEN0647 rev.0 - 11/2023...

  • Page 72: Removing The Upper Cover

    8.1 Removing the upper cover 1 Remove the 7 screws fixing the Upper cover  Upper cover  2 Pull the Upper cover upwards and remove it. CAUTION Pay attention of no falling off the upper cover. PMEN0647 rev.0 - 11/2023...

  • Page 73: Removing The Service Cover

    8.2 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.  Service cover  2 Slide the service cover slightly downwards and remove it pulling it backwards. CAUTION Pay attention of no falling off the service cover.

  • Page 74: Removing The

    8.3 Removing the front cover 1 Remove the upper cover as explained in "8.1 Removing the upper cover" and the screws of the service cover and the front cover.    Upper cover  Service cover  Front cover ...

  • Page 75: Removing The Rear Cover

    3 Remove the front cover slightly upwards and remove it pulling it backwards. CAUTION Pay attention of no falling off the front cover. 8.4 Removing the rear cover 1 Remove the 8 screws fixing the rear cover: 2 screws at the right side and 6 screws at the rear side. ...
  • Page 76 2 Slide the Rear cover slightly downwards and remove it pulling it backwards. CAUTION Pay attention of no falling off the rear cover. PMEN0647 rev.0 - 11/2023...

  • Page 77: Erp Data

    ERP Data 9.1 AVERAGE climate .....................70 9.2 WARMER climate .....................71 9.3 COLDER climate ....................71 9.4 Additional data ....................71 9.5 G eneral ERP data for hot water storage tanks ..........71 PMEN0647 rev.0 - 11/2023...
  • Page 78 9.1 AVERAGE climate 2.0 HP 3.0 HP Outdoor unit RASM-2VR2E RASM-3VR2E 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 175 (179) 125 (127) 175 (177)

  • Page 79: Additional Data

    9.2 WARMER climate 2.0 HP 3.0 HP Outdoor unit RASM-2VR2E RASM-3VR2E Design capacity (P 4.00 6.00 DESIGN Nominal energy efficiency (η 185 (194) 170 (175) SCOP 4.69 (4.92) 4.33 (4.46) Data for Packaged Fiche: Energy efficiency with OTC control (η ) (*) 189 (198) 173 (178)
  • Page 80 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. Ronda Shimizu, 1 - Políg. Ind. Can Torrella 08233 Vacarisses (Barcelona) Spain © Copyright 2023 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. – All rights reserved. PMEN0647 rev.0 - 11/2023...

This manual is also suitable for:

Yutaki m rasm-3vr2e

Table of Contents