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......................11 2.1.4 Electrical .................................
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Table of contents 9 Electrical installation About connecting the electrical wiring .......................... 46 9.1.1 Precautions when connecting the electrical wiring..................46 9.1.2 Guidelines when connecting the electrical wiring..................48 9.1.3 Specifications of standard wiring components....................49 To connect the electrical wiring to the outdoor unit..................... 49 10 Finishing the outdoor unit installation 10.1 To finish the outdoor unit installation..........................
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).
About the documentation 1.1.1 Meaning of warnings and symbols DANGER Indicates a situation that results in death or serious injury. DANGER: RISK OF ELECTROCUTION Indicates a situation that could result in electrocution. DANGER: RISK OF BURNING/SCALDING Indicates a situation that could result in burning/scalding because of extreme hot or cold temperatures.
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About the documentation Symbol Explanation Indicates a table title or a reference to it. Example: " 1–3 Table title" means "Table 3 in chapter 1". RXTM-R_RXTP-R_ARXTP-R_RXTA-B Installer reference guide R32 split series 4P518023-11H – 2021.03...
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).
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. RXTM-R_RXTP-R_ARXTP-R_RXTA-B Installer reference guide R32 split series 4P518023-11H –...
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General safety precautions 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).
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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. 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.
General safety precautions WARNING Make sure there is no oxygen in the system. Refrigerant may only be charged after performing the leak test and the vacuum drying. Possible consequence: Self-combustion and explosion of the compressor because of oxygen going into the operating compressor. ▪...
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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 WARNING ▪ After finishing the electrical work, confirm that each electrical component and terminal inside the electrical components box is connected securely. ▪ Make sure all covers are closed before starting up the unit. NOTICE Only applicable if the power supply is three‑phase, and the compressor has an ON/ OFF starting method.
Specific installer safety instructions 3 Specific installer safety instructions Always observe the following safety instructions and regulations. To handle the outdoor unit (see "4.2.2 To handle the outdoor unit" [ 21]) CAUTION To avoid injury, do NOT touch the air inlet or aluminium fins of the unit. Unit installation (see "6 Unit installation" [...
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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 "8 Charging refrigerant" [ 42]) Charging refrigerant (see 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.
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Specific installer safety instructions WARNING ALWAYS use multicore cable for power supply cables. WARNING Use an all-pole disconnection type breaker with at least 3 mm between the contact point gaps that provide full disconnection under overvoltage category III. WARNING If the supply cord is damaged, it MUST be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
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Specific installer safety instructions DANGER: RISK OF BURNING/SCALDING CAUTION Do NOT perform the test operation while working on the indoor units. When performing the test operation, NOT only the outdoor unit, but the connected indoor unit will operate as well. Working on an indoor unit while performing a test operation is dangerous.
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Specific installer safety instructions DANGER: RISK OF BURNING/SCALDING Do NOT touch the compressor with bare hands. Troubleshooting (see "15 Troubleshooting" [ 59]) DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING WARNING ▪ When carrying out an inspection on the switch box of the unit, ALWAYS make sure that the unit is disconnected from the mains.
About the box 4 About the box 4.1 Overview: About the box This chapter describes what you have to do after the box with the outdoor unit is delivered on-site. Keep the following in mind: ▪ At delivery, the unit MUST be checked for damage. Any damage MUST be reported immediately to the claims agent of the carrier.
About the box Only handle the outdoor unit as follows: Make sure the unit is placed on a flat surface to avoid damage. If the aluminum fins on the unit are bent, straighten them with a fin comb (field supply). 4.2.3 To remove the accessories from the outdoor unit 1 Lift the outdoor unit.
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 RXTM-R_RXTP-R_ARXTP-R_RXTA-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 a Baffle plate b Prevailing wind direction c Air outlet Do NOT install the unit in the following places: ▪ Sound sensitive areas (e.g. near a bedroom), so that the operation noise will cause no trouble. Note: If the sound is measured under actual installation conditions, the measured value might be higher than the sound pressure level mentioned in Sound spectrum in the data book due to environmental noise and sound reflections.
Unit installation a Sea wind b Building c Outdoor unit d Windbreaker The outdoor unit is designed for outdoor installation only, and for ambient temperatures within the following ranges: Cooling mode Heating mode –10~46°C DB –25~24°C DB 6.1.2 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.
Unit installation 6.2 Opening the unit 6.2.1 About opening the unit 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.
Unit installation 6.3.2 Precautions when mounting the outdoor unit INFORMATION Also read the precautions and requirements in the following chapters: ▪ "2 General safety precautions" [ 7] ▪ "6.1 Preparing the installation site" [ 24] 6.3.3 To provide the installation structure Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise.
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.
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Unit installation RXTM-R_RXTP-R_ARXTP-R_RXTA-B Installer reference guide R32 split series 4P518023-11H – 2021.03...
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. 7.1.2 Refrigerant piping insulation ▪ Use polyethylene foam as insulation material: with a heat transfer rate between 0.041 and 0.052 ...
Piping installation ▪ Connecting the refrigerant piping to the indoor unit ▪ Connecting the refrigerant piping to the outdoor unit ▪ Insulating the refrigerant piping ▪ Keeping in mind the guidelines for: Pipe bending Flaring pipe ends Using the stop valves 7.2.2 Precautions when connecting the refrigerant piping INFORMATION Also read the precautions and requirements in the following chapters:...
Piping installation Unit Installation period Protection method Outdoor unit >1 month Pinch the pipe <1 month Pinch or tape the pipe Indoor unit Regardless of the period INFORMATION Do NOT open the refrigerant stop valve before checking the refrigerant piping. When you need to charge additional refrigerant it is recommended to open the refrigerant stop valve after charging.
Piping installation 7.2.4 Pipe bending guidelines Use a pipe bender for bending. All pipe bends should be as gentle as possible (bending radius should be 30~40 mm or larger). 7.2.5 To flare the pipe end CAUTION ▪ Incomplete flaring may cause refrigerant gas leakage. ▪...
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Piping installation ▪ The stop valves are factory closed. ▪ The following figure shows the stop valve parts required when handling the valve. a Service port and service port cap b Valve stem c Field piping connection d Stem cap ▪...
Piping installation ▪ After handling the stop valve, tighten the stem cap, and check for refrigerant leaks. Stem cap Width across flats (mm) Tightening torque (N∙m) Liquid side 15~17 Gas side 21~28 To handle the service cap ▪ ALWAYS use a charge hose equipped with a valve depressor pin, since the service port is a Schrader type valve.
Piping installation Typical workflow Checking the refrigerant piping typically consists of the following stages: Checking for leaks in the refrigerant piping. Performing vacuum drying to remove all moisture, air or nitrogen from the refrigerant piping. If there is a possibility of moisture being present in the refrigerant piping (for example, water may have entered the piping), first carry out the vacuum drying procedure below until all moisture has been removed.
Piping installation 2 Check for leaks by applying the bubble test solution to all connections. 3 Discharge all nitrogen gas. 7.3.4 To perform vacuum drying DANGER: RISK OF EXPLOSION Do NOT start the unit if it is vacuumed. Connect the vacuum pump and manifold as follows: a Low pressure gauge b Gauge manifold c High pressure gauge...
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Piping installation INFORMATION After opening the stop valve, it is possible that the pressure in the refrigerant piping does NOT increase. This might be caused by e.g. the closed state of the expansion valve in the outdoor unit circuit, but does NOT present any problem for correct operation of the unit.
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 fix the fluorinated greenhouse gases label ........................8.1 About charging refrigerant The outdoor unit is factory charged with refrigerant, but in some cases the following might be necessary:...
Charging refrigerant 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. 8.2 About the refrigerant This product contains fluorinated greenhouse gases.
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 If the total liquid piping Then…...
Charging refrigerant If pump down is needed in case of dismantling or relocating the system, see "16.2 To pump down" [ 61] for more details. 8.7 To fix the fluorinated greenhouse gases label 1 Fill in the label as follows: Contains fluorinated greenhouse gases RXXX GWP: XXX GWP ×...
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:...
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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 shock. ▪...
Electrical installation c g e d f a Multimeter (DC voltage range) b S80 – reversing solenoid valve lead wire c S70 – fan motor lead wire d LED e S90 – thermistor lead wire f S20 – electronic expansion valve lead wire g S40 –...
Electrical installation Wire type Installation method Stranded conductor wire with round crimp-style terminal a Terminal b Screw c Flat washer Allowed NOT allowed Tightening torques Item Tightening torque (N•m) M4 (X1M) 1.5~1.6 M4 (earth) 1.4~1.5 ▪ The earth wire between the wire retainer and the terminal must be longer than the other wires.
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Electrical installation 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 b Power supply cable c Circuit breaker d Residual current device...
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.
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 J6 on the PCB, the operation range will expand to –15°C.
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 the commissioning and hand-over to the user.
Commissioning During test operation, the outdoor unit and the indoor units will start up. Make sure that the preparations of all indoor units are finished (field piping, electrical wiring, air purge, ...). See installation manual of the indoor units for details. 12.3 Checklist before commissioning After the installation of the unit, first check the items listed below.
Commissioning Prerequisite: Test run should be performed in accordance with the operation manual of the indoor unit to make sure that all functions and parts are working properly. 1 In cooling mode, select the lowest programmable temperature. In heating mode, select the highest programmable temperature. Test run can be disabled if necessary.
Hand-over to the user 13 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.
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 14.3 Checklist for yearly maintenance of the outdoor unit Check the following at least once a year: ▪ Heat exchanger The heat exchanger of the outdoor unit can get blocked up due to dust, dirt, leaves, etc. It is recommended to clean the heat exchanger yearly. A blocked heat exchanger can lead to too low pressure or too high pressure leading to worse performance.
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...
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). ▪...
Technical data 17 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). 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 Meaning 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 Diode bridge DIP switch Heater FU*, F*U, (for characteristics, refer to Fuse PCB inside your unit) Connector (frame ground)
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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4P518023-11H 2021.03 Verantwortung für Energie und Umwelt...