Daikin RXYSA4A7V1B Installer And User Manual
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Daikin RXYSA4A7V1B Installer And User Manual

Daikin RXYSA4A7V1B Installer And User Manual

System air conditioner
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RXYSA4A7V1B
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RXYSA6A7Y1B
Installer and user reference guide
VRV 5-S system air conditioner

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Summary of Contents for Daikin RXYSA4A7V1B

  • Page 1 Installer and user reference guide VRV 5-S system air conditioner RXYSA4A7V1B RXYSA5A7V1B RXYSA6A7V1B RXYSA4A7Y1B RXYSA5A7Y1B RXYSA6A7Y1B...

  • Page 2: Table Of Contents

    Table of contents Table of contents 1 About the documentation About this document ..............................2 General safety precautions About the documentation .............................. 2.1.1 Meaning of warnings and symbols ........................ For the installer ................................2.2.1 General ................................2.2.2 Installation site ............................... 2.2.3 Refrigerant..............................
  • Page 3 Table of contents 11.1 Error codes: Overview ..............................51 11.2 Symptoms that are NOT system malfunctions....................... 53 11.2.1 Symptom: The system does not operate....................... 53 11.2.2 Symptom: Cool/Heat cannot be changed over ..................... 53 11.2.3 Symptom: Fan operation is possible, but cooling and heating do not work ..........53 11.2.4 Symptom: The fan speed does not correspond to the setting..............
  • Page 4 Table of contents 18.2 Connecting the refrigerant piping ..........................81 18.2.1 About connecting the refrigerant piping ....................... 81 18.2.2 Precautions when connecting the refrigerant piping..................81 18.2.3 Pipe bending guidelines ..........................82 18.2.4 To braze the pipe end............................. 82 18.2.5 Using the stop valve and service port......................
  • Page 5 Table of contents 25.2 Maintenance safety precautions............................ 141 25.2.1 To prevent electrical hazards ......................... 141 25.3 Checklist for yearly maintenance of the outdoor unit....................142 25.4 About service mode operation............................142 25.4.1 To use vacuum mode ............................. 142 25.4.2 To recover refrigerant ............................ 143 26 Troubleshooting 26.1 Overview: Troubleshooting ............................

  • Page 6: About The Documentation

    The original documentation is written in English. All other languages are translations. Technical engineering data ▪ A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of latest technical data is available on the Daikin Business Portal (authentication required).

  • Page 7: General Safety Precautions

    General safety precautions 2 General safety precautions 2.1 About the documentation ▪ The original documentation is written in English. All other languages are translations. ▪ The precautions described in this document cover very important topics, follow them carefully. ▪ The installation of the system, and all activities described in the installation manual and in the installer reference guide MUST be performed by an authorised installer.

  • Page 8: For The Installer

    Improper installation or attachment of equipment or accessories could result in electrical shock, short-circuit, leaks, fire or other damage to the equipment. Only use accessories, optional equipment and spare parts made or approved by Daikin. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).

  • Page 9: Installation Site

    General safety precautions WARNING Provide adequate measures to prevent that the unit can be used as a shelter by small animals. Small animals that make contact with electrical parts can cause malfunctions, smoke or fire. CAUTION Do NOT touch the air inlet or aluminium fins of the unit. CAUTION ▪...
  • Page 10 General safety precautions NOTICE Make sure refrigerant piping installation complies with applicable legislation. In Europe, EN378 is the applicable standard. NOTICE Make sure the field piping and connections are NOT subjected to stress. WARNING During tests, NEVER pressurize the product with a pressure higher than the maximum allowable pressure (as indicated on the nameplate of the unit).

  • Page 11: Brine

    General safety precautions ▪ In case recharge is required, see the nameplate of the unit. It states the type of refrigerant and necessary amount. ▪ The unit is factory charged with refrigerant and depending on pipe sizes and pipe lengths some systems require additional charging of refrigerant. ▪...

  • Page 12: Water

    General safety precautions 2.2.5 Water If applicable. See the installation manual or installer reference guide of your application for more information. NOTICE Make sure water quality complies with EU directive 98/83 EC. 2.2.6 Electrical DANGER: RISK OF ELECTROCUTION ▪ Turn OFF all power supply before removing the switch  box cover, connecting electrical wiring or touching electrical parts.
  • Page 13 General safety precautions CAUTION ▪ When connecting the power supply: connect the earth cable first, before making the current-carrying connections. ▪ When disconnecting the power supply: disconnect the current-carrying cables first, before separating the earth connection. ▪ The length of the conductors between the power supply stress relief and the terminal block itself must be as such that the current-carrying wires are tautened before the earth wire is in case the power supply is pulled loose from the stress relief.

  • Page 14: Specific Installer Safety Instructions

    Specific installer safety instructions 3 Specific installer safety instructions Always observe the following safety instructions and regulations. CAUTION The cloth inside the left handle is intended to protect the hand from being cut by the aluminium fins of the unit. Remove the cloth after the unit is completely mounted.
  • Page 15 Specific installer safety instructions Connecting the refrigerant piping (see "18.2 Connecting the refrigerant piping" [  81]) WARNING Any gas or oil remaining inside the stop valve may blow off the spun piping. If these instructions are NOT followed correctly it may result in property damage or personal injury, which may be serious depending on the circumstances.
  • Page 16 Specific installer safety instructions "20 Electrical installation" [  101]) Electrical installation (see WARNING ▪ All wiring MUST be performed by an authorised electrician and MUST comply with the applicable legislation. ▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation.

  • Page 17: Instructions For Equipment Using R32 Refrigerant

    WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation (for example national gas regulation) and are executed only by authorised persons. RXYSA4~6A7V/Y1B Installer and user reference guide VRV 5-S system air conditioner 4P600330-1A –...

  • Page 18: Installation Space Requirements

    Specific installer safety instructions WARNING If one or more rooms are connected to the unit using a duct system, make sure: ▪ there are no operating ignition sources (example: open flames, an operating gas appliance or an operating electric heater) in case the floor area is less than the minimum floor area A (m²).

  • Page 19: System Layout Requirements

    Specific installer safety instructions 3.1.2 System layout requirements The VRV 5-S uses R32 refrigerant which is rated as A2L and is mildly flammable. To comply with the requirements of enhanced tightness refrigerating systems of the IEC 60335-2-40, this system is equipped with shut-off valves in the outdoor unit and an alarm in the remote controller.
  • Page 20 Specific installer safety instructions Remote controller requirements Heat pump outdoor unit Refrigerant piping VRV direct expansion (DX) indoor unit Remote controller in normal mode Remote controller in alarm only mode Remote controller in supervisor mode (mandatory in some situations) iTM (optional) Option PCB (optional) For installation of the remote controller, please refer to the installation and operation manual delivered with the remote controller.
  • Page 21 Specific installer safety instructions Note: Depending on configuration, the remote controller is operable in three possible modes. Each mode offers different controller functionality. For detailed information about setting the operation mode of the remote controller and its function, please refer to the installer and user reference guide of the remote controller.
  • Page 22 Specific installer safety instructions NOT OK Case In case of two R32 safety system compatible remote controllers, at least one remote controller should be in the room of the indoor. Group control system is not allowed. Each indoor unit should be connected to a separate remote controller In particular situations it is...

  • Page 23: To Determine The Charge Limitations

    Specific installer safety instructions 3.1.3 To determine the charge limitations 1 Determine the area of the smallest room in order to derive the total refrigerant charge limit in the system: The room area can be determined by projecting the walls, doors and partitions to the floor and calculate the enclosed area.
  • Page 24 Specific installer safety instructions For the upper opening: The opening cannot go outdoors The opening cannot be closed The upper opening must be ≥0.006 m² (50% of A nvmin The bottom of the upper opening must be ≥1500  mm above the floor The height of the opening is ≥20 mm Note: The requirement for the upper opening can be met by drop...
  • Page 25 Specific installer safety instructions m (kg) m (kg) m (kg) m (kg) 18.8 / 13.8 29.3 / 24.3 / 3.3 / 6.5 / 3.7 / 7.2 19.1 / 14.1 29.6 / 24.6 / 4.0 / 7.9 19.5 / 14.5 29.9 / 24.9 / 4.3 / 8.6...
  • Page 26 Specific installer safety instructions 4 Determine the total amount of refrigerant in the system: Contains fluorinated greenhouse gases GWP: xxx GWP × kg 1000 Total charge=Factory charge +additional charge =3.4 kg+R The R value is calculated in "19.4 To determine the additional refrigerant amount" [  96].
  • Page 27 Specific installer safety instructions VRV system serving 6 rooms. The biggest room has an area of 60 m², the smallest room has an area of 16 m². There are multiple underground floors in the building and the smallest room of the lowest underground floor has an area of 28 m². Use graph (c) to check the maximum allowed charge for a room of 16 ...

  • Page 28: For The User

    For the user For the user RXYSA4~6A7V/Y1B Installer and user reference guide VRV 5-S system air conditioner 4P600330-1A – 2020.07...

  • Page 29: User Safety Instructions

    User safety instructions 4 User safety instructions Always observe the following safety instructions and regulations. 4.1 General WARNING If you are NOT sure how to operate the unit, contact your installer. WARNING This appliance is not intended for use by persons, including children, with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning...

  • Page 30: Instructions For Safe Operation

    User safety instructions ▪ Units are marked with the following symbol: This means that electrical and electronic products may NOT be mixed with unsorted household waste. Do NOT try to dismantle the system yourself: the dismantling of the system, treatment of the refrigerant, of oil and of other parts must be done by an authorized installer and must comply with applicable legislation.
  • Page 31 User safety instructions WARNING ▪ Do not modify, disassemble, remove, reinstall or repair the unit yourself as incorrect dismantling or installation may cause an electric shock or fire. Contact your dealer. ▪ In case of accidental refrigerant leaks, make sure there are no naked flames.

  • Page 32: About The System

    About the system 5 About the system The VRV 5-S uses R32 refrigerant which is rated as A2L and is mildly flammable. For compliance with the requirements for enhanced tightness refrigerating systems and IEC60335-2-40 the installer must take extra measures. For more information, "3.1 Instructions for equipment using R32 refrigerant" [  17].

  • Page 33: User Interface

    User interface 6 User interface CAUTION ▪ NEVER touch the internal parts of the controller. ▪ Do NOT remove the front panel. Some parts inside are dangerous to touch and appliance problems may happen. For checking and adjusting the internal parts, contact your dealer.

  • Page 34: Before Operation

    Before operation 7 Before operation WARNING This unit contains electrical and hot parts. WARNING Before operating the unit, be sure the installation has been carried out correctly by an installer. NOTICE Never inspect or service the unit by yourself. Ask a qualified service person to perform this work.

  • Page 35: Operation

    Operation 8 Operation 8.1 Operation range Use the system in the following temperature and humidity ranges for safe and effective operation. Cooling Heating Outdoor temperature –5~46°C DB –20~21°C DB –20~15.5°C WB Indoor temperature 21~32°C DB 15~27°C DB 14~25°C WB Indoor humidity ≤80% To avoid condensation and water dripping out of the unit. If the temperature or the humidity is beyond these conditions, safety devices may be put in action and the air conditioner may not operate.

  • Page 36: To Operate The System (Without Cool/Heat Changeover Remote Control Switch)

    Operation Defrost operation In heating operation, freezing of the outdoor unit's air cooled coil increases over time, restricting the energy transfer to the outdoor unit's coil. Heating capability decreases and the system needs to go into defrost operation to be able to remove frost from the outdoor unit’s coil.
  • Page 37 Operation Note: In case a cool/heat changeover remote control switch is used, the position of DIP switch 1 (DS1-1) on the main PCB needs to be switched to the ON position. To start 1 Select operation mode with the cool/heat changeover switch as follows: Cooling operation Heating operation Fan only operation...

  • Page 38: Using The Dry Program

    Operation 8.3 Using the dry program 8.3.1 About the dry program ▪ The function of this program is to decrease the humidity in your room with minimal temperature decrease (minimal room cooling). ▪ The micro computer automatically determines temperature and fan speed (cannot be set by the user interface).
  • Page 39 Operation 4 Press the air flow direction adjust button (only for double-flow, multi-flow, corner, ceiling-suspended and wall-mounted). Refer to "8.4  Adjusting the air flow direction" [  40] for details. To stop 5 Press the ON/OFF button on the user interface once again. Result: The operation lamp goes out and the system stops operating.

  • Page 40: Adjusting The Air Flow Direction

    Operation 8.4 Adjusting the air flow direction Refer to the operation manual of the user interface. 8.4.1 About the air flow flap Double flow+multi-flow units Wall-mounted units For the following conditions, a micro computer controls the air flow direction which may be different from the display. Cooling Heating ▪...

  • Page 41: Setting The Master User Interface

    Operation 8.5 Setting the master user interface 8.5.1 About setting the master user interface Heat pump outdoor unit Refrigerant piping VRV direct expansion (DX) indoor unit Remote controller in normal mode Remote controller in alarm only mode Remote controller in supervisor mode (mandatory in some situations) When the system is installed as shown in the figure above, it is necessary to designate one of the user interfaces as the master user interface.

  • Page 42: Energy Saving And Optimum Operation

    Energy saving and optimum operation 9 Energy saving and optimum operation Observe the following precautions to ensure the system operates properly. ▪ Adjust the air outlet properly and avoid direct air flow to room inhabitants. ▪ Adjust the room temperature properly for a comfortable environment. Avoid excessive heating or cooling.

  • Page 43: Available Main Operation Methods

    Energy saving and optimum operation 9.1 Available main operation methods Basic The refrigerant temperature is fixed independent from the situation. It corresponds to the standard operation which is known and can be expected from/ under previous VRV systems. Automatic The refrigerant temperature is set depending on the outdoor ambient conditions. As such adjusting the refrigerant temperature to match the required load (which is also related to the outdoor ambient conditions).

  • Page 44: Maintenance And Service

    Maintenance and service 10 Maintenance and service NOTICE Never inspect or service the unit by yourself. Ask a qualified service person to perform this work. WARNING The unit is equipped with a refrigerant leak detection system for safety. To be effective, the unit MUST be electrically powered at all times after installation, except for maintenance.

  • Page 45: Maintenance Before A Long Stop Period

    Maintenance and service 10.2 Maintenance before a long stop period E.g., at the end of the season. ▪ Let the indoor units run in fan only operation for about half a day in order to dry the interior of the units. Refer to "8.2.2 ...

  • Page 46: After-Sales Service And Warranty

    Maintenance and service WARNING The refrigerant inside the unit is mildly flammable, but normally does NOT leak. If the refrigerant leaks in the room and comes in contact with fire from a burner, a heater, or a cooker, this may result in fire, or the formation of a harmful gas. Turn off any combustible heating devices, ventilate the room, and contact the dealer where you purchased the unit.

  • Page 47: Shortened Maintenance And Replacement Cycles

    Maintenance and service Component Inspection Maintenance cycle cycle (replacements and/or repairs) Electric motor 1 year 20,000 hours 25,000 hours Heat exchanger 5 years Sensor (thermistor, etc.) 5 years User interface and switches 25,000 hours Drain pan 8 years Expansion valve 20,000 hours Solenoid valve 20,000 hours...
  • Page 48 Maintenance and service Recommended replacement cycle of wear parts Component Inspection Maintenance cycle cycle (replacements and/or repairs) Air filter 1 year 5 years High efficiency filter 1 year Fuse 10 years Crankcase heater 8 years Pressure containing parts In case of corrosion, contact your local dealer.

  • Page 49: Troubleshooting

    Troubleshooting 11 Troubleshooting If one of the following malfunctions occur, take the measures shown below and contact your dealer. WARNING Stop operation and shut off the power if anything unusual occurs (burning smells etc.). Leaving the unit running under such circumstances may cause breakage, electric shock or fire.
  • Page 50 Troubleshooting Malfunction Measure The system operates but ▪ Check if air inlet or outlet of outdoor or indoor cooling or heating is unit is not blocked by obstacles. Remove any insufficient. obstacles and make sure the air can flow freely. ▪...

  • Page 51: Error Codes: Overview

    Troubleshooting 11.1 Error codes: Overview In case a malfunction code appears on the indoor unit user interface display, contact your installer and inform the malfunction code, the unit type, and serial number (you can find this information on the nameplate of the unit). For your reference, a list with malfunction codes is provided.
  • Page 52 Troubleshooting Main code Contents High pressure switch malfunction Fan motor trouble (outdoor) Ambient temperature sensor malfunction (outdoor) Pressure sensor malfunction Current sensor malfunction Discharge temperature sensor malfunction (outdoor) Suction temperature sensor malfunction (outdoor) De-icing temperature sensor malfunction (outdoor) Liquid temperature sensor (after subcool HE) malfunction (outdoor) Gas temperature sensor (after subcool HE) malfunction (outdoor) High pressure sensor malfunction (S1NPH)

  • Page 53: Symptoms That Are Not System Malfunctions

    Troubleshooting Main code Contents Auto address malfunction (inconsistency) The error code is only shown on the user interface of the indoor unit where the error occurs. 11.2 Symptoms that are NOT system malfunctions The following symptoms are NOT system malfunctions: 11.2.1 Symptom: The system does not operate ▪...

  • Page 54: Symptom: The Fan Direction Does Not Correspond To The Setting

    Troubleshooting 11.2.5 Symptom: The fan direction does not correspond to the setting The fan direction does not correspond with the user interface display. The fan direction does not swing. This is because the unit is being controlled by the micro computer.

  • Page 55: Symptom: Noise Of Air Conditioners (Outdoor Unit)

    Troubleshooting 11.2.11 Symptom: Noise of air conditioners (Outdoor unit) When the tone of operating noise changes. This noise is caused by the change of frequency. 11.2.12 Symptom: Dust comes out of the unit When the unit is used for the first time in a long time. This is because dust has gotten into the unit.

  • Page 56: Relocation

    Relocation 12 Relocation Contact your dealer for removing and reinstalling the total unit. Moving units requires technical expertise. RXYSA4~6A7V/Y1B Installer and user reference guide VRV 5-S system air conditioner 4P600330-1A – 2020.07...

  • Page 57: Disposal

    Disposal 13 Disposal This unit uses hydrofluorocarbon. Contact your dealer when discarding this unit. NOTICE Do NOT try to dismantle the system yourself: dismantling of the system, treatment of the refrigerant, oil and other parts MUST comply with applicable legislation. Units MUST be treated at a specialised treatment facility for reuse, recycling and recovery.

  • Page 58: Technical Data

    Follow the steps below to consult the Energy Label – Lot 21 data of the unit and outdoor/indoor combinations. 1 Open the following webpage: https://energylabel.daikin.eu/ 2 To continue, choose: ▪ "Continue to Europe" for the international website. ▪ "Other country" for a country related site.

  • Page 59: For The Installer

    For the installer For the installer RXYSA4~6A7V/Y1B Installer and user reference guide VRV 5-S system air conditioner 4P600330-1A – 2020.07...

  • Page 60: About The Box

    About the box 15 About the box In this chapter 15.1 Overview: About the box................................ 15.2 Outdoor unit ................................... 15.2.1 To unpack the outdoor unit ........................... 15.2.2 To handle the outdoor unit............................ 15.2.3 To remove the accessories from the outdoor unit ....................15.1 Overview: About the box This chapter describes what you have to do after the box with the outdoor unit is delivered on-site.

  • Page 61: Outdoor Unit

    About the box 15.2 Outdoor unit 15.2.1 To unpack the outdoor unit 15.2.2 To handle the outdoor unit CAUTION To avoid injury, do NOT touch the air inlet or aluminium fins of the unit. Carry the unit slowly as shown: ±100 Forklift.

  • Page 62: To Remove The Accessories From The Outdoor Unit

    About the box CAUTION The cloth inside the left handle is intended to protect the hand from being cut by the aluminium fins of the unit. Remove the cloth after the unit is completely mounted. 15.2.3 To remove the accessories from the outdoor unit 1 Remove the service cover.

  • Page 63: About The Units And Options

    About the units and options 16 About the units and options In this chapter 16.1 Overview: About the units and options ..........................16.2 Identification................................... 16.2.1 Identification label: Outdoor unit .......................... 16.3 About the outdoor unit ................................16.4 System layout..................................16.5 Combining units and options..............................

  • Page 64: Identification

    About the units and options 16.2 Identification NOTICE When installing or servicing several units at the same time, make sure NOT to switch the service panels between different models. 16.2.1 Identification label: Outdoor unit Location Model identification Example: R X Y S A 6 A7 Y1 B Code Explanation Outdoor air cooled...

  • Page 65: System Layout

    About the units and options 16.4 System layout WARNING The installation MUST comply with the requirements that apply to this R32 equipment. For more information, see "3.1  Instructions for equipment using R32 refrigerant" [  17]. INFORMATION Not all combinations of indoor units are allowed, for guidance, see "16.5.2 Possible combinations of indoor units" [...

  • Page 66: Possible Options For The Outdoor Unit

    About the units and options 16.5.3 Possible options for the outdoor unit Bottom plate heater (EKBPH250D7) ▪ Prevents freeze-up of the bottom plate. ▪ Recommended in areas with low ambient temperature and high humidity. ▪ For installation instructions, see the installation manual of the bottom plate heater.

  • Page 67: Unit Installation

    Unit installation 17 Unit installation WARNING The installation MUST comply with the requirements that apply to this R32 equipment. For more information, see "3.1  Instructions for equipment using R32 refrigerant" [  17]. In this chapter 17.1 Preparing the installation site ..............................17.1.1 Installation site requirements of the outdoor unit ....................
  • Page 68 Unit installation The outdoor unit is designed for outdoor installation only, and for the following ambient temperatures: Heating –20~21°C DB –20~15.5°C WB Cooling –5~46°C DB Note: For indoor installation of the outdoor unit, check the applicable legislation. NOTICE The equipment described in this manual may cause electronic noise generated from radio-frequency energy.
  • Page 69 Unit installation It is NOT recommended to install the unit in the following places because it may shorten the life of the unit: ▪ Where the voltage fluctuates a lot ▪ In vehicles or vessels ▪ Where acidic or alkaline vapour is present Seaside installation.

  • Page 70: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates

    Unit installation Baffle plate Prevailing wind direction Air outlet 17.1.2 Additional installation site requirements of the outdoor unit in cold climates Protect the outdoor unit against direct snowfall and take care that the outdoor unit is NEVER snowed up. Snow cover or shed Pedestal (minimum height=150 mm) Prevailing wind direction Air outlet...

  • Page 71: Opening And Closing The Unit

    Unit installation 17.2 Opening and closing the unit 17.2.1 About opening the units At certain times, you have to open the unit. Example: ▪ When connecting the refrigerant piping ▪ When connecting the electrical wiring ▪ When maintaining or servicing the unit DANGER: RISK OF ELECTROCUTION Do NOT leave the unit unattended when the service cover is removed.
  • Page 72 Unit installation 1× 8 mm RXYSA4~6A7V/Y1B Installer and user reference guide VRV 5-S system air conditioner 4P600330-1A – 2020.07...

  • Page 73: Mounting The Outdoor Unit

    Unit installation 17.3 Mounting the outdoor unit 17.3.1 About mounting the outdoor unit Typical workflow Mounting the outdoor unit typically consists of the following stages: Providing the installation structure. Installing the outdoor unit. Providing drainage. Preventing the unit from falling over. 17.3.2 Precautions when mounting the outdoor unit INFORMATION Also read the precautions and requirements in the following chapters:...

  • Page 74: To Install The Outdoor Unit

    Unit installation NOTICE Fix the outdoor unit to the foundation bolts using nuts with resin washers (a). If the coating on the fastening area is stripped off, the metal can rust easily. 17.3.4 To install the outdoor unit 4× M12 17.3.5 To provide drainage ▪...

  • Page 75: To Prevent The Outdoor Unit From Falling Over

    Unit installation NOTICE If drain holes of the outdoor unit are covered by a mounting base or by floor surface, raise the unit to provide a free space of more than 150 mm under the outdoor unit. Drain holes (dimensions in mm) A Discharge side B Distance between anchor points C Bottom frame...
  • Page 76 Unit installation RXYSA4~6A7V/Y1B Installer and user reference guide VRV 5-S system air conditioner 4P600330-1A – 2020.07...

  • Page 77: Piping Installation

    Piping installation 18 Piping installation In this chapter 18.1 Preparing refrigerant piping ..............................18.1.1 Refrigerant piping requirements ........................... 18.1.2 Refrigerant piping material ............................ 18.1.3 To select the piping size ............................18.1.4 To select refrigerant branch kits..........................18.1.5 Refrigerant piping length and height difference ....................18.2 Connecting the refrigerant piping............................

  • Page 78: To Select The Piping Size

    Piping installation Depending on the applicable legislation and the maximum working pressure of the unit (see "PS High" on the unit name plate), larger piping thickness might be required. 18.1.3 To select the piping size Determine the proper size using the following tables and reference figure (only for indication).

  • Page 79: To Select Refrigerant Branch Kits

    Piping installation B: Piping between refrigerant branch kits Choose from the following table in accordance with the indoor unit total capacity type, connected downstream. Do not let the connection piping exceed the refrigerant piping size chosen by the general system model name. Indoor unit capacity index Piping outer diameter size (mm) Gas pipe...

  • Page 80: Refrigerant Piping Length And Height Difference

    Piping installation 18.1.5 Refrigerant piping length and height difference The piping lengths and height differences must comply with the following requirements. Requirement Limit Maximum actual piping length 120 m ▪ Example 1, unit 8: a+b+c+d+e+f+g+p≤Limit ▪ Example 2, unit 6: a+b+h≤Limit ▪ Example 2, unit 8: a+i+k≤Limit ▪...

  • Page 81: Connecting The Refrigerant Piping

    Piping installation VRV DX indoor units 18.2 Connecting the refrigerant piping 18.2.1 About connecting the refrigerant piping Before connecting the refrigerant piping Make sure the outdoor and indoor units are mounted. Typical workflow Connecting the refrigerant piping involves: ▪ Connecting the refrigerant piping to the outdoor unit ▪...

  • Page 82: Pipe Bending Guidelines

    Piping installation NOTICE Take the following precautions on refrigerant piping into account: ▪ Avoid anything but the designated refrigerant to get mixed into the refrigerant cycle (e.g. air). ▪ Only use R32 when adding refrigerant. ▪ Only use installation tools (e.g. manifold gauge set) that are exclusively used for R32 installations to withstand the pressure and to prevent foreign materials (e.g.

  • Page 83: Using The Stop Valve And Service Port

    Piping installation Taping Manual valve Pressure-reducing valve Nitrogen ▪ Do NOT use anti-oxidants when brazing pipe joints. Residue can clog pipes and break equipment. ▪ Do NOT use flux when brazing copper-to-copper refrigerant piping. Use phosphor copper brazing filler alloy (BCuP), which does not require flux. Flux has an extremely harmful influence on refrigerant piping systems.

  • Page 84: To Remove The Spun Pipes

    Piping installation Counterclockwise to open Clockwise to close 3 When the stop valve CANNOT be turned any further, stop turning. 4 Tighten the stop valve securely when opening or closing the stop valve. For the correct tightening torque value, refer to the table below. NOTICE Inadequate torque may cause leakage of refrigerant and breakage of the stop valve.

  • Page 85: To Connect The Refrigerant Piping To The Outdoor Unit

    Piping installation 3 Recover gas and oil from the spun piping by using a recovery unit. CAUTION Do not vent gases into the atmosphere. 4 When all gas and oil is recovered from the spun piping, disconnect the charge hose and close the service ports. 5 Cut off the lower part of the gas and liquid stop valve pipes along the black line.
  • Page 86 Piping installation 2 Choose a piping route (a, b, c or d). Front Side Rear Bottom INFORMATION ▪ Remove the knockout hole (a) in the bottom plate or cover plate by tapping on the attachment points with a flat head screwdriver and a hammer. ▪...

  • Page 87: To Connect The Refrigerant Branching Kit

    Piping installation NOTICE When brazing: First braze the liquid side piping, then the gas side piping. Enter the filler rod from the front of the unit and the brazing torch from the right side to braze with the flame pointing outside. Avoid heating the compressor sound insulation and other piping.

  • Page 88: Checking The Refrigerant Piping

    Piping installation Horizontal surface Refnet joint mounted vertically Refnet joint mounted horizontally 18.3 Checking the refrigerant piping 18.3.1 About checking the refrigerant piping Refrigerant piping works are Finish piping work. finished? The indoor units and/or Use procedure: outdoor unit were already "Method 1: Before power ON powered ON? (regular method)".

  • Page 89: Checking Refrigerant Piping: General Guidelines

    Piping installation DANGER: RISK OF ELECTROCUTION NOTICE Make sure that all indoor units connected to the outdoor unit are powered on. NOTICE Wait to apply setting [2‑21] until the outdoor unit has finished the initialisation. Leak test and vacuum drying Checking the refrigerant piping involves: ▪...

  • Page 90: Checking Refrigerant Piping: Setup

    Piping installation 18.3.3 Checking refrigerant piping: Setup p < p > Pressure reducing valve Nitrogen Weighing scales Refrigerant R32 tank (siphon system) Vacuum pump Liquid line stop valve Gas line stop valve Valve A Valve B Valve C Valve State of valve Valve A Open Valve B...

  • Page 91: To Perform Vacuum Drying

    Piping installation NOTICE Make sure to use a recommended bubble test solution from your wholesaler. Do not use soap water, which may cause cracking of flare nuts (soap water may contain salt, which absorbs moisture that will freeze when the piping gets cold), and/or lead to corrosion of flared joints (soap water may contain ammonia which causes a corrosive effect between the brass flare nut and the copper flare).

  • Page 92: Charging Refrigerant

    Charging refrigerant 19 Charging refrigerant In this chapter 19.1 About charging refrigerant..............................19.2 About the refrigerant ................................19.3 Precautions when charging refrigerant ..........................19.4 To determine the additional refrigerant amount ........................19.5 To charge refrigerant................................19.6 Error codes when charging refrigerant ..........................19.7 To fix the fluorinated greenhouse gases label ........................

  • Page 93: About The Refrigerant

    Charging refrigerant 19.2 About the refrigerant This product contains fluorinated greenhouse gases. Do NOT vent gases into the atmosphere. Refrigerant type: R32 Global warming potential (GWP) value: 675 NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO equivalent.

  • Page 94: Precautions When Charging Refrigerant

    Charging refrigerant 19.3 Precautions when charging refrigerant INFORMATION Also read the precautions and requirements in the following chapters: ▪ General safety precautions ▪ Preparation WARNING ▪ Only use R32 as refrigerant. Other substances may cause explosions and accidents. ▪ R32 contains fluorinated greenhouse gases. Its global warming potential (GWP) value is 675.
  • Page 95 Charging refrigerant NOTICE ▪ Ensure that contamination of different refrigerants does not occur when using charging equipment. ▪ Charging hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in them. ▪ Cylinders shall be kept in an appropriate position according to the instructions. ▪...

  • Page 96: To Determine The Additional Refrigerant Amount

    Charging refrigerant 19.4 To determine the additional refrigerant amount WARNING The maximum allowable total refrigerant amount is determined based on the smallest room being served by the system. "3.1.2 System layout requirements" [  19] to determine the maximum allowable total refrigerant amount. INFORMATION For final charge adjustment in a test laboratory, contact your dealer.

  • Page 97: To Charge Refrigerant

    Charging refrigerant 19.5 To charge refrigerant To speed up the refrigerant charging process, it is in case of larger systems recommended to first pre-charge a portion of refrigerant through the liquid line before proceeding with the manual charging. It can be skipped, but charging will take longer then.
  • Page 98 Charging refrigerant Then The determined additional refrigerant Disconnect the manifold from the amount is not reached yet liquid line. Continue with the "Charging refrigerant (in manual additional refrigerant charge mode)" instructions. Charging refrigerant (in manual additional refrigerant charge mode) The remaining additional refrigerant charge can be charged by operating the outdoor unit by means of the manual additional refrigerant charge mode.

  • Page 99: Error Codes When Charging Refrigerant

    Charging refrigerant 10 Open valve A. 11 Charge refrigerant until the remaining determined additional refrigerant amount is added, and then close valve A. 12 Press BS3 to stop the manual additional refrigerant charge mode. NOTICE Make sure to open all stop valves after (pre-) charging the refrigerant. Operating with the stop valves closed will damage the compressor.

  • Page 100: To Check For Refrigerant Leaks After Charging

    Charging refrigerant 19.8 To check for refrigerant leaks after charging All field made refrigerant joints must be tested for tightness. No leak shall be detected with a test method that has a sensitivity of 5  grams refrigerant per year or better, at a pressure of at least 0.25  times the maximum working pressure (see "PS High"...

  • Page 101: Electrical Installation

    Electrical installation 20 Electrical installation In this chapter 20.1 About connecting the electrical wiring ..........................101 20.1.1 Precautions when connecting the electrical wiring ....................101 20.1.2 Field wiring: Overview............................102 20.1.3 Guidelines when knocking out knockout holes ..................... 104 20.1.4 Guidelines when connecting the electrical wiring ....................

  • Page 102: Field Wiring: Overview

    Electrical installation WARNING ▪ All wiring MUST be performed by an authorised electrician and MUST comply with the applicable legislation. ▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation. WARNING ▪...
  • Page 103 Electrical installation Transmission wiring specification and limits Maximum wiring length 300 m (distance between outdoor and furthest indoor unit) Total wiring length 600 m (sum of distances between outdoor and all indoor units) If the total transmission wiring exceeds these limits, communication errors might occur. No secondary branchings are allowed after any transmission wire branching.

  • Page 104: Guidelines When Knocking Out Knockout Holes

    Electrical installation 20.1.3 Guidelines when knocking out knockout holes NOTICE Precautions when making knockout holes: ▪ Avoid damaging the casing. ▪ After making the knockout holes, we recommend you remove the burrs and paint the edges and areas around the edges using repair paint to prevent rusting. ▪...

  • Page 105: About Electrical Compliance

    Electrical installation Wire type Installation method Stranded conductor wire with round crimp-style terminal a Terminal b Screw c Flat washer O Allowed X NOT allowed Tightening torques In case of RXYSA4~6_V: Terminal Wiring Screw size Tightening torque (N•m) Power supply wiring 2.2~2.7 SVEO output 1.3~1.6...

  • Page 106: Safety Device Requirements

    Electrical installation 20.1.6 Safety device requirements Power supply wiring The power supply must be protected with the required safety devices, i.e. a main switch, a slow blow fuse on each phase and an earth leakage protector in accordance with the applicable legislation. Selection and sizing of the wiring should be done in accordance with the applicable legislation based on the information mentioned in the table below.

  • Page 107: To Connect The Electrical Wiring To The Outdoor Unit

    Electrical installation 20.2 To connect the electrical wiring to the outdoor unit NOTICE ▪ Follow the wiring diagram (delivered with the unit, located at the inside of the service cover). ▪ Make sure the electrical wiring does NOT obstruct proper reattachment of the service cover.
  • Page 108 Electrical installation 1~ 50 Hz 3N~ 50 Hz 220-240 V 380-415 V L1 L2 L3 L1 L2 L3 Earth leakage circuit breaker Fuse Power supply cable 5 Fix the cables (power supply and interconnection cable) with a cable tie to the stop valve attachment plate and route the wiring according to the illustration below.
  • Page 109 Electrical installation WARNING Do NOT strip the outer cable jacket lower than the fixation point on the stop valve attachment plate. 6 Choose one of the 3 possibilities to route the cables through the frame: Transmission wiring cable Power supply cable 7 Remove the selected knockout holes by tapping on the attachment points with a flat head screwdriver and a hammer.

  • Page 110: To Connect The External Outputs

    Electrical installation NOTICE Precautions when making knockout holes: ▪ Avoid damaging the casing and underlying piping. ▪ After making the knockout holes, we recommend to remove the burrs and paint the edges and areas around the edges using repair paint to prevent rusting. ▪...
  • Page 111 Electrical installation 24 V DC – 240 V AC – SVS output terminal DC power supply Relay Surge killer diode AC power supply External alarm SVEO The SVEO output is a contact on terminal X1M that closes in case of occurrence of general errors.

  • Page 112: Finishing The Outdoor Unit Installation

    Finishing the outdoor unit installation 21 Finishing the outdoor unit installation In this chapter 21.1 To insulate the refrigerant piping............................112 21.2 To close the outdoor unit ............................... 115 21.3 To check the insulation resistance of the compressor ......................115 21.1 To insulate the refrigerant piping After finishing the charging procedure, the piping must be insulated.
  • Page 113 Finishing the outdoor unit installation Liquid piping Gas piping Vinyl tape around curves Sealant Vinyl tape against sharp edges Stop valves 3 Insulate the liquid piping (a, see above) and the gas piping (b, see above). 4 Wind heat insulation around the curves, and then cover it with vinyl tape (c, see above).
  • Page 114 Finishing the outdoor unit installation WARNING Provide adequate measures to prevent that the unit can be used as a shelter by small animals. Small animals that make contact with electrical parts can cause malfunctions, smoke or fire. RXYSA4~6A7V/Y1B Installer and user reference guide VRV 5-S system air conditioner 4P600330-1A –...

  • Page 115: To Close The Outdoor Unit

    Finishing the outdoor unit installation 21.2 To close the outdoor unit NOTICE When closing the outdoor unit cover, make sure that the tightening torque does NOT exceed 4.1 N•m. 1× 8 mm 21.3 To check the insulation resistance of the compressor NOTICE If, after installation, refrigerant accumulates in the compressor, the insulation resistance over the poles can drop, but if it is at least 1 MΩ, then the unit will not...

  • Page 116: Configuration

    Configuration 22 Configuration In this chapter 22.1 Overview: Configuration................................. 116 22.2 Making field settings................................117 22.2.1 About making field settings ........................... 117 22.2.2 To access the field setting components ........................ 118 22.2.3 Field setting components............................118 22.2.4 To access mode 1 or 2............................119 22.2.5 To use mode 1................................

  • Page 117: Making Field Settings

    Configuration 22.2 Making field settings 22.2.1 About making field settings To configure the heat pump system, you must give input to the outdoor unit's main PCB (A1P). This involves the following field setting components: ▪ Push buttons to give input to the PCB ▪...

  • Page 118: To Access The Field Setting Components

    Configuration Mode Description Mode 2 Mode 2 is used to change the field settings of the system. Consulting the current field setting value and (field settings) changing the current field setting value is possible. In general, normal operation can be resumed without special intervention after changing field settings.

  • Page 119: To Access Mode 1 Or 2

    Configuration DS1‑2 NOT USED. DO NOT CHANGE THE FACTORY SETTING. Push buttons Use the push buttons to make the field settings. Operate the push buttons with an insulated stick (such as a closed ball-point pen) to avoid touching of live parts. 7-segments display The display gives feedback about the field settings, which are defined as [Mode- Setting]=Value.

  • Page 120: To Use Mode 1

    Configuration In case of malfunction, the malfunction code is displayed on the indoor unit user interface and the outdoor unit 7‑segment display. Solve the malfunction code accordingly. The communication wiring should be checked at first. Access BS1 is used to switch between the default situation, mode 1 and mode 2. Access Action Default situation...

  • Page 121: To Use Mode 2

    Configuration 3 Push BS2 10 times. Result: Mode 1 setting 10 is addressed: 4 Push BS3 one time; the value which is returned (depending on the actual field situation), is the amount of indoor units which are connected to the system. Result: Mode ...

  • Page 122: Mode 1: Monitoring Settings

    Configuration 4 Push BS3 1 time; the value which is returned (depending on the actual field situation), is the status of the setting. In the case of [2‑18], default value is "0", which means the function is not active. Result: Mode  2 setting 18 is addressed and selected, return value is the current setting situation.

  • Page 123: Mode 2: Field Settings

    Configuration ▪ [1‑5]: The current T target parameter position. ▪ [1‑6]: The current T target parameter position. For more information and advice about the impact of these settings, see "22.3 Energy saving and optimum operation" [  129]. [1‑10] Shows the total number of connected indoor units. It can be convenient to check if the total number of indoor units which are installed match the total number of indoor units which are recognised by the system.
  • Page 124 Configuration [2‑9] target temperature during heating operation. [2‑9] target (°C) 0 (default) Auto For more information and advice about the impact of these settings, see "22.3 Energy saving and optimum operation" [  129]. [2‑12] Enable the low noise function and/or power consumption limitation via external control adaptor (DTA104A61/62).
  • Page 125 Configuration [2‑20] Description Activated. To stop the manual additional refrigerant charge operation (when the required additional refrigerant amount is charged), push BS3. If this function was not aborted by pushing BS3, the unit will stop its operation after 30 minutes. If 30 minutes was not sufficient to add the needed refrigerant amount, the function can be reactivated by changing the field setting again.
  • Page 126 Configuration [2‑25] Description Level 1 Level 5<Level 4<Level 3<Level 2<Level 1 2 (default) Level 2 Level 3 Level 4 Level 5 [2‑26] Low noise operation start time. This setting is used in conjunction with setting [2‑22]. [2‑26] Start time automatic low noise operation (approximately) 20h00 2 (default)
  • Page 127 Configuration [2‑31] Power consumption limitation level (step  2) via the external control adaptor (DTA104A61/62). If the system needs to be running under power consumption limitation conditions when an external signal is sent to the unit, this setting defines the level power consumption limitation that will be applied for step 2.
  • Page 128 Configuration This setting is used in conjunction with setting [2‑9]. [2‑82] Heating comfort setting 1 (default) Mild Quick Powerful For more information and advice about the impact of these settings, see "22.3 Energy saving and optimum operation" [  129]. RXYSA4~6A7V/Y1B Installer and user reference guide VRV 5-S system air conditioner 4P600330-1A –...

  • Page 129: Energy Saving And Optimum Operation

    Configuration 22.3 Energy saving and optimum operation This heat pump system is equipped with advanced energy saving functionality. Depending on the priority, emphasises can be put on energy saving or comfort level. Several parameters can be selected, resulting in the optimal balance between energy consumption and comfort for the particular application.

  • Page 130: Available Comfort Settings

    Configuration For details concerning to Hi-sensible applications, please contact your dealer. To activate this in… Change… Cooling operation [2‑8] to the appropriate value, matching the requirements of the pre-designed system containing a high sensible solution. Heating operation [2‑9] to the appropriate value, matching the requirements of the pre-designed system containing a high sensible solution.
  • Page 131 Configuration Quick Overshoot (during heating operation) or undershoot (during cooling operation) is allowed compared to the requested refrigerant temperature, in order to achieve the required room temperature very fast. The overshoot is allowed from the start up moment. ▪ In case of cooling operation the evaporating temperature is allowed to go down to 6°C on temporary base depending on the situation.

  • Page 132: Example: Automatic Mode During Cooling

    Configuration To activate this in… Change… Cooling operation [2‑41]=0. This setting is used in conjunction with setting [2‑8]. Heating operation [2‑42]=0. This setting is used in conjunction with setting [2‑9]. 22.3.3 Example: Automatic mode during cooling 100% 6°C 3°C 35°C Actual load curve Virtual load curve (initial capacity automatic mode) Virtual target value (initial evaporation temperature value automatic mode)

  • Page 133: Example: Automatic Mode During Heating

    Configuration Room temperature evolution: Indoor unit set temperature Operation start Operating time Mild Quick Powerful 22.3.4 Example: Automatic mode during heating 100% 49°C 46°C 2°C Virtual load curve (default automatic mode peak capacity) Load curve Virtual target value (initial condensation temperature value automatic mode) Design temperature Load factor Outside air temperature...
  • Page 134 Configuration Room temperature evolution: Indoor unit set temperature Operation start Operating time Mild Quick Powerful RXYSA4~6A7V/Y1B Installer and user reference guide VRV 5-S system air conditioner 4P600330-1A – 2020.07...

  • Page 135: Commissioning

    23 Commissioning NOTICE General commissioning checklist. Next to the commissioning instructions in this chapter, a general commissioning checklist is also available on the Daikin Business Portal (authentication required). The general commissioning checklist is complementary to the instructions in this chapter and can be used as a guideline and reporting template during the commissioning and hand-over to the user.

  • Page 136: Checklist Before Commissioning

    Commissioning 23.2 Checklist before commissioning After the installation of the unit, first check the items listed below. Once all checks are fulfilled, the unit must be closed. Power-up the unit after it is closed. You read the complete installation and operation instructions, as described in the installer and user reference guide.

  • Page 137: Checklist During Commissioning

    Commissioning Requirements for R32 equipment Make sure the system meets all requirements that are described in the following chapter: "3.1 Instructions for equipment using R32 refrigerant" [  17]. Field settings Make sure all field settings you want are set. See "22.2 Making field settings" [  117].

  • Page 138: Correcting After Abnormal Completion Of The Test Run

    Commissioning 3 Make sure the default (idle) situation is existing; see "22.2.4 To access mode 1 or 2"    119]. Push BS2 for 5 seconds or more. The unit will start test operation. Result: The test operation is automatically carried out, the outdoor unit display will indicate "...

  • Page 139: Hand-Over To The User

    Hand-over to the user 24 Hand-over to the user Once the test run is finished and the unit operates properly, please make sure the following is clear for the user: ▪ Make sure that the user has the printed documentation and ask him/her to keep it for future reference.

  • Page 140: Maintenance And Service

    Maintenance and service 25 Maintenance and service NOTICE Maintenance MUST be done by an authorized installer or service agent. We recommend performing maintenance at least once a year. However, applicable legislation might require shorter maintenance intervals. NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO equivalent.

  • Page 141: Maintenance Safety Precautions

    Maintenance and service 25.2 Maintenance safety precautions DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING WARNING Prior to start working on systems containing flammable refrigerant, safety checks are necessary to ensure that the risk of ignition is minimised. Therefore, some instructions should be followed.

  • Page 142: Checklist For Yearly Maintenance Of The Outdoor Unit

    Maintenance and service 8× 5 Pull out junction connector X1A (A4P) for the fan motor in the outdoor unit before starting service operation on the inverter equipment. Be careful not to touch the live parts. (If a fan rotates due to strong wind, it may store electricity in the capacitor or in the main circuit and cause electric shock.) 6 After the service is finished, plug the junction connector back in.

  • Page 143: To Recover Refrigerant

    Maintenance and service 3 Press BS1 to stop vacuuming mode. 25.4.2 To recover refrigerant This should be done with a refrigerant recovery unit. Follow the same procedure as for vacuuming method. DANGER: RISK OF EXPLOSION Pump down – Refrigerant leakage. If you want to pump down the system, and there is a leak in the refrigerant circuit: ▪...

  • Page 144: Troubleshooting

    Troubleshooting 26 Troubleshooting In this chapter 26.1 Overview: Troubleshooting ..............................144 26.2 Precautions when troubleshooting............................145 26.3 Solving problems based on error codes..........................145 26.3.1 Error codes: Overview............................145 26.4 Refrigerant leak detection system ............................149 26.1 Overview: Troubleshooting Before troubleshooting Carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring.

  • Page 145: Precautions When Troubleshooting

    Troubleshooting 26.2 Precautions when troubleshooting WARNING ▪ When carrying out an inspection on the switch box of the unit, ALWAYS make sure that the unit is disconnected from the mains. Turn off the respective circuit breaker. ▪ When a safety device was activated, stop the unit and find out why the safety device was activated before resetting it.
  • Page 146 Troubleshooting Main Cause Solution SVEO code Safety system error (leak detection) An error related to the safety system occurred. Refer to the service manual for more information. R32 sensor malfunction in one of the Check connection on PCB or actuator. indoor units The system will continue operation, but indoor unit in scope will stop operating.
  • Page 147 Troubleshooting Main Cause Solution SVEO code Discharge temperature sensor Check connection on PCB or actuator. malfunction (R21T): open circuit / short circuit - A1P (X19A) Suction temperature sensor Check connection on PCB or actuator. malfunction (R3T) - A1P (X30A) (suction) (R5T) - A1P (X30A) (subcool) Liquid temperature sensor (coil) Check connection on PCB or actuator.
  • Page 148 Troubleshooting Main Cause Solution SVEO code ▪ The stop valve of an outdoor unit is ▪ Open the stop valve on both the gas and left closed. liquid side. ▪ The piping and wiring of the ▪ Confirm that the piping and wiring of the specified indoor unit...

  • Page 149: Refrigerant Leak Detection System

    Troubleshooting 26.4 Refrigerant leak detection system Normal operation During normal operation, the alarm only and supervisor remote controller have no functionality. The screen of the remote controller in alarm only and supervisor mode will be off. Operation of the remote cownntroller can be checked by pushing button to open the installer menu.
  • Page 150 Troubleshooting After refrigerant recovery operation, an error code is displayed and the unit is in locked state. Service is needed to repair the leak and activate the system. Refer to the service manual for more information. Note: It is possible to stop the leak detection alarm from the remote controller and from the app.

  • Page 151: Disposal

    Disposal 27 Disposal NOTICE Do NOT try to dismantle the system yourself: dismantling of the system, treatment of the refrigerant, oil and other parts MUST comply with applicable legislation. Units MUST be treated at a specialised treatment facility for reuse, recycling and recovery. RXYSA4~6A7V/Y1B Installer and user reference guide VRV 5-S system air conditioner...

  • Page 152: Technical Data

    Technical data 28 Technical data A subset of the latest technical data is available on the regional Daikin website (publicly accessible). The full set of latest technical data is available on the Daikin Business Portal (authentication required). In this chapter 28.1...

  • Page 153: Service Space: Outdoor Unit

    Technical data 28.1 Service space: Outdoor unit Suction side In the illustrations below, the service space at the suction side is based on 35°C DB and cooling operation. Foresee more space in the following cases: ▪ When the suction side temperature regularly exceeds this temperature. ▪...
  • Page 154 Technical data b (mm) ≥100 ≤½H b≥250 ≥100 ½H <H ≤H b≥300 ≥100 ≥100 >H ≥100 ≥2000 ≥3000 ≥200 ≥100 ≥1000 ≥100 ≥1500 (1) For better serviceability, use a distance ≥250 mm Stacked units (max. 2 levels) ( ≥100 ≥100 ≥500 ≥500 ≥300 ≥1000...

  • Page 155: Piping Diagram: Outdoor Unit

    Technical data 28.2 Piping diagram: Outdoor unit S1NPL S1NPH HPS–A HPS–M 3D127852 Liquid Thermistors: Thermistor (ambient) Charge port Thermistor (suction) Service port Thermistor (liquid) Stop valve Thermistor (subcool) Refrigerant filter Thermistor (superheat) One-way valve Thermistor (heat exchanger) Pressure relief valve R10T Thermistor (fin) PCB cooling...

  • Page 156: Wiring Diagram: Outdoor Unit

    Technical data 28.3 Wiring diagram: Outdoor unit The wiring diagram is delivered with the unit, located at the inside of the service cover. Symbols: Main terminal Earth wiring Wire number 15 Field wire Field cable /12.2 Connection ** continues on page 12 column 2 Several wiring possibilities Option Not mounted in switch box...
  • Page 157 Technical data Overload switch Q1DI Earth leakage circuit breaker (field supply) Thermistor (ambient) Thermistor (suction) Thermistor (liquid) Thermistor (subcool) Thermistor (superheat) Thermistor (heat exchanger) R10T Thermistor (fin) R21T Thermistor (discharge) PTC thermistor S1NPH High pressure sensor S1NPL Low pressure sensor S1PH High pressure switch Air control switch (option)
  • Page 158 Technical data Printed circuit board (cool/heat selector) Printed circuit board (noise filter) BS* (A1P) Push buttons (mode, set, return, test, reset) C* (A1P) Capacitors DS* (A1P) DIP switch Bottom plate heater (option) E1HC Crank case heater F1U (A1P) Fuse (T 6.3 A / 250 V) F1U (A2P) Fuse (T 3.15 A / 250 V) Fuse (T 1.0 A / 250 V)
  • Page 159 Technical data Mechanical ventilation error input (field supply) Diode module V1R, V2R (A1P) IGBT power module V3R (A1P) Diode module PCB connector Terminal strip Connector Electronic expansion valve (main – EVM1) Electronic expansion valve (EVT) Electronic expansion valve (main – EVM2) Electronic expansion valve (EVL) Electronic expansion valve (EVSL) Electronic expansion valve (EVSG)

  • Page 160: Glossary

    Optional equipment Equipment made or approved by Daikin that can be combined with the product according to the instructions in the accompanying documentation. Field supply Equipment NOT made by Daikin that can be combined with the product according to the instructions in the accompanying documentation.
  • Page 164 4P600330-1A 2020.07 Verantwortung für Energie und Umwelt...

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