Daikin 2MXM68A2V1B Installer's Reference Manual

Daikin 2MXM68A2V1B Installer's Reference Manual

R32 split
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2MXM68A2V1B
Installer reference guide
R32 Split series
3MXM40A2V1B
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3MXM68A2V1B
4MXM68A2V1B
4MXM80A2V1B
5MXM90A2V1B
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Summary of Contents for Daikin 2MXM68A2V1B

  • Page 1 Installer reference guide R32 Split series 2MXM68A2V1B 3MXM40A2V1B 4MXM68A2V1B 5MXM90A2V1B 3MXM52A2V1B 4MXM80A2V1B 3MXM68A2V1B...
  • Page 2: Table Of Contents

    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 .................................
  • Page 3 Table of contents 9 Electrical installation About connecting the electrical wiring .......................... 50 9.1.1 Precautions when connecting the electrical wiring..................50 9.1.2 Guidelines when connecting the electrical wiring..................52 9.1.3 Specifications of standard wiring components....................53 To connect the electrical wiring to the outdoor unit..................... 54 10 Finishing the outdoor unit installation 10.1 To finish the outdoor unit installation..........................
  • Page 4: 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). 2MXM-A, 3MXM-A, 4MXM-A, 5MXM-A Installer reference guide R32 Split series...
  • Page 5: Meaning Of Warnings And Symbols

    About the documentation ▪ The full set of 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. DANGER: RISK OF ELECTROCUTION Indicates a situation that could result in electrocution.
  • Page 6 About the documentation Symbol Explanation Indicates a figure title or a reference to it. Example: " 1–3 Figure title" means "Figure 3 in chapter 1". Indicates a table title or a reference to it. Example: " 1–3 Table title" means "Table 3 in chapter 1". 2MXM-A, 3MXM-A, 4MXM-A, 5MXM-A Installer reference guide R32 Split series...
  • Page 7: General Safety Precautions

    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 8: Installation Site

    WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons. 2MXM-A, 3MXM-A, 4MXM-A, 5MXM-A Installer reference guide R32 Split series 4P600463-5E –...
  • Page 9 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).
  • Page 10 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…...
  • Page 11: Refrigerant - In Case Of R410A Or R32

    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.
  • Page 12: Electrical

    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. ▪...
  • Page 13 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. ▪...
  • Page 14 General safety precautions Install power cables at least 1  meter away from televisions or radios to prevent interference. Depending on the radio waves, a distance of 1  meter may NOT be sufficient. WARNING ▪ After finishing the electrical work, confirm that each electrical component and terminal inside the electrical components box is connected securely.
  • Page 15: Specific Installer Safety Instructions

    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" [  20]) CAUTION To avoid injury, do NOT touch the air inlet or aluminium fins of the unit. CAUTION ONLY handle the outdoor unit as follows: "6 Unit...
  • Page 16 Specific installer safety instructions DANGER: RISK OF BURNING/SCALDING DANGER: RISK OF ELECTROCUTION Piping installation (see "7 Piping installation" [  32]) CAUTION Piping and joints of a split system shall be made with permanent joints when inside an occupied space except joints directly connecting the piping to the indoor units. CAUTION ▪...
  • Page 17 Specific installer safety instructions 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. ▪...
  • Page 18 Specific installer safety instructions WARNING ▪ Do NOT use locally purchased electrical parts inside the product. ▪ Do NOT branch the power supply for the drain pump, etc. from the terminal block. This could result in electrical shock or fire. WARNING Keep the interconnection wiring away from copper pipes without thermal insulation as such pipes will be very hot.
  • Page 19 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.
  • Page 20: About The Box

    About the box 4 About the box 4.1 Overview: About the box This chapter describes what you have to do after the boxes with the outdoor and indoor unit are 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.
  • Page 21: To Remove The Accessories From The Outdoor Unit

    About the box CAUTION ONLY handle the outdoor unit as follows: 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). 4.2.3 To remove the accessories from the outdoor unit 1 Lift the outdoor unit.
  • Page 22 About the box a Outdoor unit installation manual b General safety precautions c Fluorinated greenhouse gases label d Multilingual fluorinated greenhouse gases label e Energy label f Screw bag. The screws will be used for fixing the electrical wire anchor bands. g Drain cap (small) h Drain cap (large) i Reducer assembly...
  • Page 23: About The Unit

    The refrigerant inside this unit is mildly flammable. INFORMATION For the operation limits see the latest technical data of the outdoor unit on the regional Daikin website (publicly accessible). 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.
  • Page 24: Unit Installation

    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 ....................
  • Page 25: 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.
  • Page 26 Unit installation ▪ disruption of operation due to decrease of low pressure or increase of high pressure; ▪ a broken fan (if a strong wind blows continuously on the fan, it may start rotating very fast, until it breaks). It is recommended to install a baffle plate when the air outlet is exposed to wind. It is recommended to install the outdoor unit with the air inlet facing the wall and NOT directly exposed to the wind.
  • Page 27: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates

    Unit installation If the outdoor unit is exposed to direct sea winds, install a windbreaker. ▪ Height of windbreaker≥1.5×height of outdoor unit ▪ 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 within the following ranges (unless otherwise specified in the...
  • Page 28: Opening The Unit

    Unit installation It is recommended to provide at least 150  mm of free space below the unit (300 mm for heavy snowfall areas). Additionally, make sure the unit is positioned at least 100 mm above the maximum expected level of snow. If necessary, construct a pedestal.
  • Page 29: Precautions When Mounting The Outdoor Unit

    Unit installation 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. Protecting the unit against snow and wind by installing a snow cover and baffle plates.
  • Page 30: To Install The Outdoor Unit

    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.
  • Page 31: To Prevent The Outdoor Unit From Falling Over

    Unit installation To close the drain holes and attach the drain socket 1 Install drain caps (accessory f) and (accessory g). Make sure the edges of the drain caps close off the holes completely. 2 Install the drain socket. a Drain hole. Install a drain cap (large). b Drain hole.
  • Page 32: Piping Installation

    Piping installation 7 Piping installation In this chapter Preparing refrigerant piping ..............................7.1.1 Refrigerant piping requirements ........................... 7.1.2 Refrigerant piping insulation..........................7.1.3 Refrigerant piping length and height difference ....................Connecting the refrigerant piping............................7.2.1 About connecting the refrigerant piping....................... 7.2.2 Precautions when connecting the refrigerant piping....................
  • Page 33: Refrigerant Piping Insulation

    Piping installation 4MXM68 Liquid piping 4× Ø6.4 mm (1/4") Gas piping 2× Ø9.5 mm (3/8") 2× Ø12.7 mm (1/2") 4MXM80 Liquid piping 4× Ø6.4 mm (1/4") Gas piping 1× Ø9.5 mm (3/8") 1× Ø12.7 mm (1/2") 2× Ø15.9 mm (5/8") 5MXM90 Liquid piping 5× Ø6.4 mm (1/4") Gas piping 2×...
  • Page 34: Refrigerant Piping Length And Height Difference

    Piping installation Pipe outer diameter (Ø ) Insulation inner diameter Insulation thickness (t) (Ø 12.7 mm (1/2") 14~16 mm ≥13 mm 15.9 mm (5/8") 16~20 mm ≥13 mm Ø Ø Ø Ø If the temperature is higher than 30°C and the humidity is higher than RH 80%, the thickness of the insulation materials should be at least 20 ...
  • Page 35: Connecting The Refrigerant Piping

    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.
  • Page 36: Guidelines When Connecting The Refrigerant 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: ▪...
  • Page 37: Pipe Bending Guidelines

    Piping installation ▪ Coat the flare inner surface with ether oil or ester oil when connecting a flare nut. Tighten 3 or 4 turns by hand, before tightening firmly. ▪ ALWAYS use 2 wrenches together when loosening a flare nut. ▪...
  • Page 38: Connections Between Outdoor And Indoor Unit Using Reducers

    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.
  • Page 39 Piping installation Port Class Reducer B + C (Ø12.7mm) 15, 20, 25, 35 42, 50 — 3MXM68 A (Ø9.5 mm) 15, 20, 25, 35, (42) — B + C (Ø12.7mm) 15, 20, 25, 35, 42 50, 60 — 4MXM68 A + B (Ø9.5 mm) 15, 20, 25, 35, (42) —...
  • Page 40: Using The Stop Valve And Service Port

    Piping installation Connection examples: ▪ Connecting a Ø12.7 mm pipe to a Ø15.9 mm gas pipe connection port a Outdoor unit connection port b Reducer no. 1 c Reducer no. 3 d Flare nut for Ø15.9 mm e Inter-unit piping ▪ Connecting a Ø9.5 mm pipe to a Ø15.9 mm gas pipe connection port a Outdoor unit connection port b Reducer no.
  • Page 41 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 ▪...
  • Page 42: To Connect The Refrigerant Piping To The Outdoor Unit

    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 18~20 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.
  • Page 43: Precautions When Checking The Refrigerant Piping

    Piping installation Before checking the refrigerant piping Make sure the refrigerant piping is connected between the outdoor unit and the indoor unit. 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.
  • Page 44: To Perform Vacuum Drying

    Piping installation 1 Charge the system with nitrogen gas up to a gauge pressure of at least 200 kPa (2 bar). It is recommended to pressurize to 3000 kPa (30 bar) in order to detect small leaks. 2 Check for leaks by applying the bubble test solution to all connections. 3 Discharge all nitrogen gas.
  • Page 45 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.
  • Page 46: Charging Refrigerant

    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:...
  • Page 47: About The Refrigerant

    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.
  • Page 48: Precautions When Charging Refrigerant

    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…...
  • Page 49: To Charge Additional Refrigerant

    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. ▪...
  • Page 50: Electrical Installation

    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.
  • Page 51 Electrical installation INFORMATION Also read the precautions and requirements in the "2  General safety precautions" [  7]. INFORMATION Also read "9.1.3 Specifications of standard wiring components" [  53]. WARNING ▪ If the power supply has a missing or wrong N-phase, equipment might break down.
  • Page 52: Guidelines When Connecting The Electrical Wiring

    Electrical installation DANGER: RISK OF ELECTROCUTION Disconnect the power supply for more than 10 minutes, and measure the voltage at the terminals of main circuit capacitors or electrical components before servicing. The voltage MUST be less than 50 V DC before you can touch electrical components. For the location of the terminals, see the wiring diagram.
  • Page 53: Specifications Of Standard Wiring Components

    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) M4 (earth) ▪ The earth wire between the wire retainer and the terminal must be longer than the other wires.
  • Page 54: To Connect The Electrical Wiring To The Outdoor Unit

    Electrical installation Electrical equipment must comply with EN/IEC 61000-3-12, the European/ International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current >16 A and ≤75 A per phase. 9.2 To connect the electrical wiring to the outdoor unit 1 Remove the switch box cover (1 screw).
  • Page 55 Electrical installation 1 2 3 2× 1 2 3 a Wire retainer 10 Reattach the switch box cover and the service cover. 2MXM-A, 3MXM-A, 4MXM-A, 5MXM-A Installer reference guide R32 Split series 4P600463-5E – 2021.12...
  • Page 56: Finishing The Outdoor Unit Installation

    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.
  • Page 57: Configuration

    Configuration 11 Configuration In this chapter 11.1 About standby electricity saving function..........................11.1.1 To turn ON standby electricity saving function ..................... 11.2 About priority room function ..............................11.2.1 To set the priority room function .......................... 11.3 About night quiet mode ................................. 11.3.1 To turn ON the night quiet mode ..........................
  • Page 58: About Priority Room Function

    Configuration 11.2 About priority room function INFORMATION ▪ The priority room function requires initial settings to be made during the installation of the unit. Ask the customer in which rooms he plans to use this function and make the necessary settings during installation. ▪...
  • Page 59: About Heat Mode Lock

    Configuration 1× 2 Set the night quiet mode switch (SW6-1) to ON. 11.4 About heat mode lock Heat mode lock limits the unit to heat operation. 11.4.1 To turn ON heat mode lock 1 Remove the switch cover on the service PCB. 2 Set the heat mode lock switch (SW5-1) to ON.
  • Page 60 Configuration 4× VHR-5N SVH-21T-1 2MXM-A, 3MXM-A, 4MXM-A, 5MXM-A Installer reference guide R32 Split series 4P600463-5E – 2021.12...
  • Page 61: Commissioning

    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.
  • Page 62: Checklist Before Commissioning

    Commissioning NOTICE Be sure to turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor. 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, ...).
  • Page 63: Trial Operation And Testing

    Commissioning 12.5 Trial operation and testing For the Hybrid for Multi, certain precautions are required before using this function. For more information, see the indoor unit installation manual and/or the indoor installer reference guide. Before starting the test run, measure the voltage at the primary side of the safety breaker. The piping and wiring work match.
  • Page 64: To Perform A Test Run

    Commissioning INFORMATION ▪ The number of LEDs displayed depends on the number of rooms. ▪ The wiring error check function will NOT work if outside temperature is ≤5°C. ▪ After wiring error check operation is completed, LED indication will continue until normal operation starts.
  • Page 65: Starting Up The Outdoor Unit

    Commissioning 12.6 Starting up the outdoor unit See the indoor unit installation manual for configuration and commissioning of the system. 2MXM-A, 3MXM-A, 4MXM-A, 5MXM-A Installer reference guide R32 Split series 4P600463-5E – 2021.12...
  • Page 66: Hand-Over To The User

    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.
  • Page 67: Maintenance And Service

    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.
  • Page 68: Checklist For Yearly Maintenance Of The Outdoor Unit

    Maintenance and service 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.
  • Page 69: Troubleshooting

    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 ▪ solving problems based on LED behaviour This chapter describes what you have to do in case of problems. It contains information about solving problems based on symptoms.
  • Page 70: Symptom: The Unit Is Not Heating Or Cooling As Expected

    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. Marks on the wiring and piping do NOT Marks on the wiring and piping (room A, match.
  • Page 71: Solving Problems Based On Led Behaviour

    Troubleshooting 15.4 Solving problems based on LED behaviour 15.4.1 Fault diagnosis using LED on outdoor unit PCB DANGER: RISK OF ELECTROCUTION ▪ When the unit is NOT operating, the LEDs on the PCB are turned OFF in order to save power. ▪...
  • Page 72 Troubleshooting Green LED-A Diagnosis Turn the power OFF and back ON, and check the LED within approximately 3 minutes. If the LED is ON again, the outdoor unit PCB is faulty. Power supply fault. Diagnosis may not apply to some cases. For more details, refer to the service manual. 2MXM-A, 3MXM-A, 4MXM-A, 5MXM-A Installer reference guide R32 Split series...
  • Page 73: Disposal

    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:...
  • Page 74: To Start And Stop Forced Cooling

    Disposal 3 After 5 to 10 minutes (after only 1 or 2 minutes in case of very low ambient temperatures (<−10°C)), close the liquid stop valve with a hexagonal wrench. 4 Check on the manifold if the vacuum is reached. 5 After 2-3 minutes, close the gas stop valve and stop forced cooling. a Gas stop valve b Closing direction c Hexagonal wrench...
  • Page 75 Disposal 1× 8 Close switch box cover and service cover. 2MXM-A, 3MXM-A, 4MXM-A, 5MXM-A Installer reference guide R32 Split series 4P600463-5E – 2021.12...
  • Page 76: Technical Data

    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).
  • Page 77 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)
  • Page 78 Technical data Symbol Meaning 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 Pressure sensor (low) S*PH, HPS* Pressure switch (high) S*PL Pressure switch (low) Thermostat...
  • Page 79: Piping Diagram

    Technical data 17.2 Piping diagram 17.2.1 Piping diagram: Outdoor unit Component PED category classification: ▪ High pressure switches: category IV ▪ Compressor: category II ▪ Accumulator: 4MXM80, 5MXM90 category II, other models category I ▪ Other components: refer to PED article 4, paragraph 3 2MXM68 7.9CuT 7.9CuT...
  • Page 80 Technical data 3MXM40, 3MXM52 7.9CuT 7.9CuT 6.4CuT 7.9CuT (6.4CuT) 7.9CuT 12.7CuT 7.9CuT 7.9CuT 6.4CuT 9.5CuT (6.4CuT) 7.9CuT 9.5CuT 7.9CuT 6.4CuT 9.5CuT (6.4CuT) 12.7CuT 9.5CuT 12.7CuT 15.9CuT 12.7CuT (9.5CuT) 9.5CuT 12.7CuT (12.7CuT) 12.7CuT (12.7CuT) 15.9CuT 12.7CuT 3MXM68 7.9CuT 7.9CuT 6.4CuT 7.9CuT (6.4CuT) 7.9CuT 12.7CuT...
  • Page 81 Technical data 4MXM68 7.9CuT 7.9CuT 6.4CuT (6.4CuT) 7.9CuT 7.9CuT 12.7CuT 7.9CuT 6.4CuT 7.9CuT 9.5CuT (6.4CuT) 7.9CuT 9.5CuT 7.9CuT 6.4CuT (6.4CuT) 7.9CuT 6.4CuT 6.4CuT 9.5CuT (6.4CuT) 9.5CuT 9.5CuT 12.7CuT 12.7CuT 15.9CuT 12.7CuT 15.9CuT 9.5CuT 12.7CuT (9.5CuT) 9.5CuT 12.7CuT (9.5CuT) 12.7CuT (12.7CuT) 15.9CuT 12.7CuT (12.7CuT)
  • Page 82 Technical data 5MXM90 7.9CuT 7.9CuT 7.9CuT 6.4CuT 9.5CuT (6.4CuT) 7.9CuT 9.5CuT 7.9CuT 6.4CuT 7.9CuT (6.4CuT) 7.9CuT 12.7CuT 7.9CuT 7.9CuT 6.4CuT 7.9CuT 9.5CuT 7.9CuT (6.4CuT) 9.5CuT 7.9CuT 7.9CuT 7.9CuT 6.4CuT 6.4CuT 9.5CuT (6.4CuT) 9.5CuT 7.9CuT 6.4CuT (6.4CuT) 12.7CuT 9.5CuT 12.7CuT 15.9CuT 12.7CuT 15.9CuT 9.5CuT...
  • Page 83: 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 84 4P600463-5E 2021.12 Verantwortung für Energie und Umwelt...

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