Table of contents Table of contents 1 About the documentation About this document..............................1.1.1 Meaning of warnings and symbols........................ 2 General safety precautions For the installer ................................2.1.1 General................................2.1.2 Installation site............................... 2.1.3 Refrigerant — in case of R410A or R32......................2.1.4 Electrical.................................
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Table of contents 9 Electrical installation About connecting the electrical wiring.......................... 9.1.1 Precautions when connecting the electrical wiring..................9.1.2 Guidelines when connecting the electrical wiring ..................9.1.3 Specifications of standard wiring components..................... To connect the electrical wiring to the outdoor unit ....................10 Finishing the outdoor unit installation 10.1 To finish the outdoor unit installation ...........................
WARNING Make sure installation, servicing, maintenance, repair and applied materials follow the instructions from Daikin (including all documents listed in “Documentation set”) and, in addition, comply with applicable legislation and are performed by qualified persons only. In Europe and areas where IEC standards apply, EN/IEC 60335-2-40 is the applicable standard.
A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of the latest technical data is available on the Daikin Business Portal (authentication required). 1.1.1 Meaning of warnings and symbols DANGER Indicates a situation that results in death or serious injury.
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About the documentation INFORMATION Indicates useful tips or additional information. Symbols used on the unit: Symbol Explanation Before installation, read the installation and operation manual, and the wiring instruction sheet. Before performing maintenance and service tasks, read the service manual. For more information, see the installer and user reference guide.
WARNING 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 unless otherwise specified. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).
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. RXA-B8, RXM-A(9), ARXM-A(9), RXP-N9, RXF-D(9), ARXF-A(9), RZAG-B...
General safety precautions WARNING ▪ Take precautions to avoid excessive vibration or pulsation to refrigeration piping. ▪ Protect the protection devices, piping and fittings as much as possible against adverse environmental effects. ▪ Provide space for expansion and contraction of long runs of piping. ▪...
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General safety precautions Contains fluorinated greenhouse gases GWP: xxx GWP × kg 1000 2 Determine which graph or table to use. ▪ For indoor units: Is the unit ceiling-mounted, wall-mounted or floor- standing? ▪ For outdoor units installed or stored indoors, this depends on the installation height: If the installation height is…...
General safety precautions 2.1.3 Refrigerant — in case of R410A or R32 If applicable. See the installation manual or installer reference guide of your application for more information. 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: ▪...
General safety precautions NOTICE After all the piping has been connected, make sure there is no gas leak. Use nitrogen to perform a gas leak detection. ▪ In case recharge is required, see the nameplate or the refrigerant charge label of the unit.
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General safety precautions WARNING If NOT factory installed, a main switch or other means for disconnection, having a contact separation in all poles providing full disconnection under overvoltage category III condition, MUST be installed in the fixed wiring. WARNING ▪ ONLY use copper wires. ▪...
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General safety precautions NOTICE Precautions when laying power wiring: ▪ Do NOT connect wiring of different thicknesses to the power terminal block (slack in the power wiring may cause abnormal heat). ▪ When connecting wiring which is the same thickness, do as shown in the figure above.
Specific installer safety instructions 3 Specific installer safety instructions Always observe the following safety instructions and regulations. To handle the outdoor unit (see "4.1.2 To handle the outdoor unit" [ 21]) CAUTION To avoid injury, do NOT touch the air inlet or aluminium fins of the unit. WARNING: MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable.
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Specific installer safety instructions CAUTION ▪ No brazing or welding on site for units with R32 refrigerant charge during shipment. ▪ During installation of the refrigeration system, joining of parts with at least one part charged shall be performed taking into account the following requirements: inside occupied spaces non-permanent joints are NOT allowed for R32 refrigerant except for site made joints directly connecting the indoor unit to piping.
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Specific installer safety instructions "9 Electrical installation" [ 47]) Electrical installation (see WARNING ▪ All wiring MUST be performed by an authorised electrician and MUST comply with the national wiring regulation. ▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation.
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Specific installer safety instructions DANGER: RISK OF ELECTROCUTION All electrical parts (including thermistors) are powered by the power supply. Do NOT touch them with bare hands. Finishing indoor unit installation (see "10 Finishing the outdoor unit installation" [ 52]) DANGER: RISK OF ELECTROCUTION ▪...
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Specific installer safety instructions WARNING ▪ Before carrying out any maintenance or repair activity, ALWAYS switch off the circuit breaker on the supply panel, remove the fuses or open the protection devices of the unit. ▪ Do NOT touch live parts for 10 minutes after the power supply is turned off because of high voltage risk.
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Specific installer safety instructions WARNING Prevent hazards due to inadvertent resetting of the thermal cut-out: power to this appliance MUST NOT be supplied through an external switching device, such as a timer, or connected to a circuit that is regularly turned ON and OFF by the utility. DANGER: RISK OF ELECTROCUTION ▪...
About the box 4 About the box Keep the following in mind: ▪ At delivery, the unit MUST be checked for damage and completeness. Any damage or missing parts MUST be reported immediately to the claims agent of the carrier. ▪...
About the box Make sure the unit is placed on a flat surface to avoid damage. NOTICE ▪ Place the unit on a flat surface. ▪ Make sure the aluminium fins on the unit are straight before installation. If not, straighten them with a fin comb (field supply).
About the unit 5 About the unit WARNING: MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable. 5.1 Identification NOTICE When installing or servicing several units at the same time, make sure NOT to switch the service panels between different models. 5.1.1 Identification label: Outdoor unit Location RXA-B8, RXM-A(9), ARXM-A(9), RXP-N9, RXF-D(9), ARXF-A(9), RZAG-B...
Unit installation 6 Unit installation WARNING Installation shall be done by an installer, the choice of materials and installation shall comply with the applicable legislation. In Europe, EN378 is the applicable standard. In this chapter Preparing the installation site ..............................6.1.1 Installation site requirements of the outdoor unit ....................
Unit installation WARNING The appliance shall be stored so as to prevent mechanical damage and in a well- ventilated room without continuously operating ignition sources (e.g. open flames, an operating gas appliance, or an operating electric heater). The room size shall be as specified in the General safety precaution.
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Unit installation It is recommended to install the outdoor unit with the air inlet facing the wall and NOT directly exposed to the wind. a Baffle plate b Prevailing wind direction c Air outlet Do NOT install the unit in the following places: ▪...
Unit installation ▪ Mind the service space requirements when installing the windbreaker. a Sea wind b Building c Outdoor unit d Windbreaker The outdoor unit is designed for outdoor installation only and for ambient temperatures specified in the table below (unless otherwise specified in the operation manual of the connected indoor unit).
Unit installation In heavy snowfall areas it is very important to select an installation site where the snow will NOT affect the unit. If lateral snowfall is possible, make sure that the heat exchanger coil is NOT affected by the snow. If necessary, install a snow cover or shed and a pedestal.
Unit installation Typical workflow Mounting the outdoor unit typically consists of the following stages: Providing the installation structure. Installing the outdoor unit. Providing drainage, see "6.3.5 To provide drainage" [ 30] Protecting the unit against snow and wind by installing a snow cover and baffle plates.
Unit installation 6.3.4 To install the outdoor unit 4× M8/M10 6.3.5 To provide drainage ▪ Make sure that condensation water can be evacuated properly. ▪ Install the unit on a base to make sure that there is proper drainage in order to avoid ice accumulation.
Unit installation a Drain port b Bottom frame c Drain plug d Hose (field supply) To close the drain holes and attach the drain socket NOTICE In cold areas, do NOT use a drain socket, hose and caps (1, 2) with the outdoor unit. Take adequate measures so that the evacuated condensate CANNOT freeze.
Piping installation 7.2 Connecting the refrigerant piping CAUTION ▪ No brazing or welding on site for units with R32 refrigerant charge during shipment. ▪ During installation of the refrigeration system, joining of parts with at least one part charged shall be performed taking into account the following requirements: inside occupied spaces non-permanent joints are NOT allowed for R32 refrigerant except for site made joints directly connecting the indoor unit to piping.
Piping installation NOTICE ▪ Do NOT use mineral oil on flared part. ▪ Do NOT reuse piping from previous installations. ▪ NEVER install a drier to this R32 unit to guarantee its lifetime. The drying material may dissolve and damage the system. NOTICE Take the following precautions on refrigerant piping into account: ▪...
Piping installation ▪ ALWAYS use 2 wrenches together when loosening a flare nut. ▪ ALWAYS use a spanner and torque wrench together to tighten the flare nut when connecting the piping. This to prevent nut cracking and leaks. a Torque wrench b Spanner c Piping union d Flare nut...
Piping installation Flare tool for R32 Conventional flare tool (clutch type) Clutch type Wing nut type (Ridgid-type) (Imperial-type) 0~0.5 mm 1.0~1.5 mm 1.5~2.0 mm 5 Check that the flaring is properly made. a Flare’s inner surface MUST be flawless. b The pipe end MUST be evenly flared in a perfect circle. c Make sure the flare nut is fitted.
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Piping installation ▪ When it is expected that the operating pressure will be low (e.g. when cooling will be performed while the outside air temperature is low), sufficiently seal the flare nut in the stop valve on the gas line with silicon sealant to prevent freezing. Silicon sealant, make sure there is no gap.
Piping installation 7.2.7 To connect the refrigerant piping to the outdoor unit ▪ Piping length. Keep field piping as short as possible. ▪ Piping protection. Protect the field piping against physical damage. 1 Connect the liquid refrigerant connection from the indoor unit to the liquid stop valve of the outdoor unit.
Piping installation NOTICE Use a 2-stage vacuum pump with a non-return valve that can evacuate to a gauge pressure of − 1 00.7 kPa (− 1 .007 bar)(5 Torr absolute). Make sure the pump oil does not flow oppositely into the system while the pump is not working. NOTICE Use this vacuum pump for R32 exclusively.
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Piping installation a Low pressure gauge b Gauge manifold c High pressure gauge d Low-pressure valve (Lo) e High-pressure valve (Hi) f Charging hoses g Vacuum pump h Valve caps i Service port j Gas stop valve k Liquid stop valve 1 Vacuum the system until the pressure on the manifold indicates −0.1 ...
Charging refrigerant 8 Charging refrigerant In this chapter About charging refrigerant..............................About the refrigerant ................................Precautions when charging refrigerant ..........................To determine the additional refrigerant amount ........................To determine the complete recharge amount ........................To charge additional refrigerant ............................To check refrigerant piping joints for leaks after charging refrigerant ................. To fix the fluorinated greenhouse gases label........................
Charging refrigerant NOTICE Before completely recharging, perform vacuum drying on the outdoor unit's internal refrigerant piping as well. Typical workflow – Completely recharging refrigerant typically consists of the following stages: 1 Determining how much refrigerant to charge. 2 Charging refrigerant. 3 Filling in the fluorinated greenhouse gases label, and fixing it to the inside of the outdoor unit.
Charging refrigerant 8.3 Precautions when charging refrigerant INFORMATION Also read the precautions and requirements in the following chapters: ▪ "2 General safety precautions" [ 7] ▪ "7.1 Preparing refrigerant piping" [ 32] 8.4 To determine the additional refrigerant amount For RZAG If the total liquid piping Then…...
Charging refrigerant 8.6 To charge additional refrigerant 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. Do NOT vent these gases into the atmosphere. ▪...
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Charging refrigerant d Total refrigerant charge e Quantity of fluorinated greenhouse gases of the total refrigerant charge expressed as tonnes CO equivalent. f GWP = Global Warming Potential NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO equivalent.
Electrical installation 9 Electrical installation In this chapter About connecting the electrical wiring ..........................9.1.1 Precautions when connecting the electrical wiring ....................9.1.2 Guidelines when connecting the electrical wiring ....................9.1.3 Specifications of standard wiring components ..................... To connect the electrical wiring to the outdoor unit ......................9.1 About connecting the electrical wiring Before connecting the electrical wiring Make sure the refrigerant piping is connected and checked.
Electrical installation WARNING ▪ If the power supply has a missing or wrong N-phase, equipment might break down. ▪ Establish proper earthing. Do NOT earth the unit to a utility pipe, surge absorber, or telephone earth. Incomplete earthing may cause electrical shocks. ▪...
Electrical installation Method 2: Using round crimp-style terminal 1 Strip insulation from wires and slightly twist the end of each wire. 2 Install a round crimp-style terminal on the end of the wire. Place the round crimp-style terminal on the wire up to the covered part and fasten the terminal with the appropriate tool.
Electrical installation 9.1.3 Specifications of standard wiring components Power supply of the product Voltage 220~240 V Frequency 50 Hz Phase Current RXA: 12.9 A ARXM, RXM50+60: 15.92 A RXM71: 19.91 A RXP50, RXF50, ARXF50: 15.13 A RXP60+71, RXF60+71, ARXF60+71: 15.7 A RZAG35+50: 15.63 A RZAG60:17.4 A Wiring / circuit breaker (field supplied) Power supply cable MUST comply with national wiring regulation 3-core cable...
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Electrical installation 2× 2 Strip insulation (20 mm) from the wires. a Strip wire end to this point b An excessive strip length may cause electrical shock or leakage 3 Open the wire clamp. 4 Connect the interconnection cable and power supply as follows: 50 Hz 220-240 V a Interconnection cable...
Finishing the outdoor unit installation 10 Finishing the outdoor unit installation 10.1 To finish the outdoor unit installation DANGER: RISK OF ELECTROCUTION ▪ Make sure that the system is earthed properly. ▪ Turn OFF the power supply before servicing. ▪ Install the switch box cover before turning ON the power supply.
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Finishing the outdoor unit installation 3× RXA-B8, RXM-A(9), ARXM-A(9), RXP-N9, RXF-D(9), ARXF-A(9), RZAG-B Installer reference guide R32 split series 4P766272-2 – 2024.01...
Configuration 11 Configuration 11.1 Facility setting Use this function for cooling at low outdoor temperature. This function is designed for facilities such as equipment of computer rooms. NEVER use in a residence or office where people occupy the space. 11.1.1 To set the facility mode When cutting jumper J12 on the PCB, the operation range will expand to –15°C.
Configuration INFORMATION The standby electricity saving can ONLY be used for the units described above. WARNING Before connecting or disconnecting the connector, make sure the power supply is turned OFF. INFORMATION Selective connector for standby electricity saving is required if other than applicable indoor unit is connected.
12 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 commissioning and hand-over to the user.
Commissioning 12.2 Checklist before commissioning 1 After the installation of the unit, check the items listed below. 2 Close the unit. 3 Power up the unit. The indoor unit is properly mounted. The outdoor unit is properly mounted. The system is properly earthed and the earth terminals are tightened. The power supply voltage matches the voltage on the identification label of the unit.
Commissioning INFORMATION ▪ Even if the unit is turned OFF, it consumes electricity. ▪ When the power turns back on after a power break, the previously selected mode will be resumed. 12.5 Starting up the outdoor unit See the indoor unit installation manual for configuration and commissioning of the system.
Hand-over to the user 13 Hand-over to the user Once the test run is finished and the unit operates properly, 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.
General maintenance/inspection checklist. Next to the maintenance instructions in this chapter, a general maintenance/inspection checklist is also available on the Daikin Business Portal (authentication required). The general maintenance/inspection checklist is complementary to the instructions in this chapter and can be used as a guideline and reporting template during maintenance.
Maintenance and service 14.2 Maintenance safety precautions DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING WARNING ▪ Before carrying out any maintenance or repair activity, ALWAYS switch off the circuit breaker on the supply panel, remove the fuses or open the protection devices of the unit.
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Maintenance and service DANGER: RISK OF EXPLOSION ▪ Use a pipe cutter to remove the compressor. ▪ Do NOT use the brazing torch. ▪ Use approved refrigerants and lubricants only. DANGER: RISK OF BURNING/SCALDING Do NOT touch the compressor with bare hands. RXA-B8, RXM-A(9), ARXM-A(9), RXP-N9, RXF-D(9), ARXF-A(9), RZAG-B Installer reference guide R32 split series...
Troubleshooting 15 Troubleshooting 15.1 Overview: Troubleshooting This chapter describes what you have to do in case of problems. It contains information about solving problems based on symptoms. Before troubleshooting Carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring.
Troubleshooting 15.3.2 Symptom: The unit is NOT heating or cooling as expected Possible causes Corrective action Wrong connection of the electrical Connect the electrical wires correctly. wires Gas leakage Check for gas leakage. 15.3.3 Symptom: Water leakage Possible causes Corrective action Incomplete thermal insulation (gas and Make sure the thermal insulation of the liquid piping, indoor portions of the...
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Troubleshooting DANGER: RISK OF ELECTROCUTION ▪ When the unit is NOT operating, the LEDs on the PCB are turned OFF in order to save power. ▪ Even when the LEDs are OFF, the terminal block and the PCB may be powered. RXA-B8, RXM-A(9), ARXM-A(9), RXP-N9, RXF-D(9), ARXF-A(9), RZAG-B Installer reference guide R32 split series...
Disposal 16 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. 16.1 Overview: Disposal Typical workflow Disposing of the system typically consists of the following stages:...
Disposal a Gas stop valve b Closing direction c Hexagonal wrench d Valve cap e Liquid stop valve 16.3 To start and stop forced cooling There are 2 methods to perform forced cooling. ▪ Method 1. Using the indoor unit ON/OFF switch (if present on the indoor unit). ▪...
A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of the latest technical data is available on the Daikin Business Portal (authentication required). 17.1 Wiring diagram The wiring diagram is delivered with the unit, located inside of the outdoor unit (bottom side of the top plate).
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Technical data Symbol Colour Symbol Colour SKY BLU Sky blue Yellow Symbol Meaning Printed circuit board Pushbutton ON/OFF, operation switch BZ, H*O Buzzer Capacitor AC*, CN*, E*, HA*, HE*, HL*, HN*, HR*, Connection, connector MR*_A, MR*_B, S*, U, V, W, X*A, K*R_*, NE D*, V*D Diode...
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Technical data Symbol Meaning Switching power supply PTC* PTC thermistor Insulated gate bipolar transistor (IGBT) Circuit breaker Q*DI, KLM Earth leak circuit breaker Overload protector Thermo switch Residual current device Resistor Thermistor Receiver Limit switch Float switch S*NG Refrigerant leak detector S*NPH Pressure sensor (high) S*NPL...
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.
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