Table of contents Table of contents 1 General safety precautions About the documentation .............................. 1.1.1 Meaning of warnings and symbols ........................ For the installer ................................1.2.1 General ................................1.2.2 Installation site ............................... 1.2.3 Refrigerant..............................10 1.2.4 Brine................................11 1.2.5 Water ................................12 1.2.6 Electrical .................................
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Table of contents 6.6.2 Precautions when charging refrigerant ......................43 6.6.3 About the refrigerant ............................. 43 6.6.4 To determine the additional refrigerant amount ..................44 6.6.5 To determine the complete recharge amount ....................44 6.6.6 To charge additional refrigerant ........................44 6.6.7 To fix the fluorinated greenhouse gases label....................
General safety precautions 1 General safety precautions 1.1 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.
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).
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 ▪...
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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. WARNING If one or more rooms are connected to the unit using a duct system, make sure: ▪...
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General safety precautions NOTICE ▪ Do NOT re-use joints which have been used already. ▪ Joints made in installation between parts of refrigerant system shall be accessible for maintenance purposes. Installation space requirements WARNING If appliances contain R32 refrigerant, the floor area of the room in which the appliances are installed, operated and stored MUST be larger than the minimum floor area defined in table below A (m ).
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General safety precautions m (kg) 1.843 7.956 Ceiling-mounted Wall-mounted Floor-standing unit unit unit m (kg) m (kg) m (kg) ≤1.842 — ≤1.842 — ≤1.842 — 1.843 3.64 1.843 4.45 1.843 28.9 4.83 34.0 3.95 4.34 5.31 41.2 5.79 49.0 4.74 5.13 6.39 57.5...
General safety precautions (b) Wall-mounted unit (= Wall-mounted unit) (c) Floor-standing unit (= Floor-standing unit) 1.2.3 Refrigerant 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.
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. ▪...
General safety precautions WARNING The ambient temperature inside the unit can get much higher than that of the room, e.g. 70°C. In case of a brine leak, hot parts inside the unit can create a hazardous situation. WARNING The use and installation of the application MUST comply with the safety and environmental precautions specified in the applicable legislation.
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General safety precautions WARNING ▪ ONLY use copper wires. ▪ Make sure the field wiring complies with the applicable legislation. ▪ All field wiring MUST be performed in accordance with the wiring diagram supplied with the product. ▪ NEVER squeeze bundled cables and make sure they do NOT come in contact with the piping and sharp edges.
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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.
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).
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About the documentation Chapter Description About the documentation What documentation exists for the installer About the box How to unpack the units and remove their accessories About the unit How to identify the unit Preparation What to do and know before going on‑site Installation What to do and know to install the system Commissioning...
About the box 3 About the box 3.1 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.
About the box 3.2.2 To remove the accessories from the outdoor unit 1 Lift the outdoor unit. CAUTION Only handle the outdoor unit as follows: 2 Remove the accessories at the bottom of the package. 1× 1× 1× 1× 1× 1×...
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About the box Outdoor unit installation manual General safety precautions Fluorinated greenhouse gases label Multilingual fluorinated greenhouse gases label Drain socket Screw bag. The screws will be used for fixing the electrical wire anchor bands. Drain cap (small) Drain cap (large) Reducer assembly Energy label 3(A)MXM+3(A)MXF+4MXM+5MXM...
About the units and options 4 About the units and options 4.1 Overview: About the units and options This chapter contains information about: ▪ Identification of the outdoor unit 4.2 Identification NOTICE When installing or servicing several units at the same time, make sure NOT to switch the service panels between different models.
Preparation 5 Preparation 5.1 Overview: Preparation This chapter describes what you have to do and know before going on-site. It contains information about: ▪ Preparing the installation site ▪ Preparing the refrigerant piping ▪ Preparing the electrical wiring 5.2 Preparing the installation site Do NOT install the unit in places often used as work place.
Preparation 5.2.1 Installation site requirements of the outdoor unit INFORMATION Also read the following requirements: ▪ General installation site requirements. See the "General safety precautions" chapter. ▪ Refrigerant piping requirements (length, height difference). See further in this "Preparation" chapter. Mind the following spacing guidelines: >100 >350 >100...
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Preparation Baffle plate Prevailing wind direction 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.
Preparation Sea wind Building Outdoor unit 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 –15~24°C DB 5.2.2 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.
Preparation 5.2.3 Refrigerant piping length and height difference INFORMATION For the Hybrid for Multi application and the DHW generator for Multi, see the indoor unit installation manual for the maximum allowable refrigerant piping length and height difference. The shorter the refrigerant piping, the better the performance of the system. The piping length and height differences must comply with the following requirements.
Preparation Pipe outer diameter (Ø ) Insulation inner diameter Insulation thickness (t) (Ø 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 mm to prevent condensation on the surface of the insulation.
Installation 6 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. 6.1 Overview: Installation This chapter describes what you have to do and know on-site to install the system. Typical workflow Installation typically consists of the following stages: Mounting the outdoor unit.
Installation DANGER: RISK OF ELECTROCUTION Do NOT leave the unit unattended when the service cover is removed. 6.2.2 To open the outdoor unit DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING 3× 6.3 Mounting the outdoor unit 6.3.1 About mounting the outdoor unit When The outdoor and indoor unit must be mounted before the refrigerant piping can be connected.
Installation 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. Use a vibration-proof rubber (field supply) in cases where vibrations may be transmitted to the building.
Installation ▪ Install the unit on a base to make sure that there is proper drainage in order to avoid ice accumulation. ▪ Prepare a water drainage channel around the foundation to drain waste water away from the unit. ▪ Avoid drain water flowing over the footpath, so that it does NOT become slippery in case of ambient freezing temperatures.
Installation 3 Insert a rubber sheet between the cables and the outdoor unit to prevent the cables from scratching the paint (field supply). 4 Attach the ends of the cables. 5 Tighten the cables. 6.4 Connecting the refrigerant piping CAUTION ▪...
Installation 6.4.2 Precautions when connecting the refrigerant piping INFORMATION Also read the precautions and requirements in the following chapters: ▪ General safety precautions ▪ Preparation DANGER: RISK OF BURNING CAUTION ▪ Do NOT use mineral oil on flared part. ▪ Do NOT reuse piping from previous installations.
Installation 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. WARNING Connect the refrigerant piping securely before running the compressor. If the refrigerant piping is NOT connected and the stop valve is open when the compressor is run, air will be sucked in.
Installation 6.4.5 To flare the pipe end CAUTION ▪ Incomplete flaring may cause refrigerant gas leakage. ▪ Do NOT re-use flares. Use new flares to prevent refrigerant gas leakage. ▪ Use flare nuts that are included with the unit. Using different flare nuts may cause refrigerant gas leakage.
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Installation Outdoor unit Total indoor unit capacity class 3MXM68, 4MXM68, 3MXF68 ≤11.0 kW 4MXM80 ≤14.5 kW 5MXM90 ≤15.6 kW Port Class Reducer 3MXM40 15, 20, 25, 35 — B + C 15, 20, 25, 35 3MXM52, 3AMXM52 15, 20, 25, 35 — B + C 15, 20, 25, 35 42, 50 —...
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Installation Reducer type Connection Ø15.9 mm → Ø12.7 mm Ø12.7 mm → Ø9.5 mm Ø15.9 mm → Ø12.7 mm Ø12.7 mm → Ø9.5 mm Ø15.9 mm → Ø9.5 mm Ø15.9 mm → Ø9.5 mm Connection examples: ▪ Connecting a Ø12.7 mm pipe to a Ø15.9 mm gas pipe connection port Outdoor unit connection port Reducer no.
Installation NOTICE Use an appropriate wrench to avoid damaging the connection thread by overtightening the flare nut. Be careful NOT to overtighten the nut, or the smaller pipe may be damaged (about 2/3-1× the normal torque). 6.4.7 Using the stop valve and service port To handle the stop valve Take the following guidelines into account: ▪...
Installation Counterclockwise to open Clockwise to close 3 When the stop valve CANNOT be turned any further, stop turning. 4 Install the stop valve cover. Result: The valve is now open/closed. To handle the stem cap ▪ The stem cap is sealed where indicated with the arrow. Do NOT damage it. ▪...
Installation 2 Connect the gas refrigerant connection from the indoor unit to the gas stop valve of the outdoor unit. NOTICE It is recommended that the refrigerant piping between indoor and outdoor unit is installed in a ducting or the refrigerant piping is wrapped with finishing tape. 6.5 Checking the refrigerant piping 6.5.1 About checking the refrigerant piping The outdoor unit's internal refrigerant piping has been factory tested for leaks.
Installation 6.5.3 To check for leaks NOTICE Do NOT exceed the unit's maximum working pressure (see "PS High" on the unit name plate). 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).
Installation ▪ Check for leaks again. ▪ Perform vacuum drying again. NOTICE Be sure to open the gas stop valve after piping installation and vacuuming. Running the system with the valve closed, the compressor may break down. INFORMATION After opening the stop valve, it is possible that the pressure in the refrigerant piping does NOT increase.
Installation 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.
Installation 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.
Installation Prerequisite: Before charging refrigerant, make sure the refrigerant piping is connected and checked (leak test and vacuum drying). 1 Connect the refrigerant cylinder to the service port. 2 Charge the additional refrigerant amount. 3 Open the gas stop valve. 6.6.7 To fix the fluorinated greenhouse gases label 1 Fill in the label as follows: Contains fluorinated greenhouse gases...
Installation 6.7 Connecting the electrical wiring 6.7.1 About connecting the electrical wiring Typical workflow Connecting the electrical wiring typically consists of the following stages: Making sure the power supply system complies with the electrical specifications of the heat pump. Connecting the electrical wiring to the outdoor unit. Connecting the electrical wiring to the indoor unit.
Installation WARNING Do NOT connect the power supply to the indoor unit. This could result in electrical shock or fire. 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.
Installation Stranded conductor wire Round crimp-style terminal ▪ Use the following methods for installing wires: Wire type Installation method Single-core wire AA´ A´ a Curled single-core wire b Screw c Flat washer Stranded conductor wire with round crimp-style terminal a Terminal b Screw c Flat washer O Allowed...
Installation Terminal for room (A, B, C, D, E)* Circuit breaker Earth leakage circuit breaker Power supply wire Interconnection wire for room (A, B, C, D, E)* *May differ depending on the model. 5 Tighten the terminal screws securely using a Philips screwdriver. 6 Check that the wires do not disconnect by pulling them lightly.
Installation Gas pipe Gas pipe insulation Interconnection cable Field wiring (if applicable) Liquid pipe Liquid pipe insulation Finishing tape 2 Install the service cover. 6.8.2 About standby electricity saving function The standby electricity saving function: ▪ turns OFF the power supply to the outdoor unit and, ▪...
Installation ▪ Operation mode priority: If the priority room function is set on an indoor unit, all other indoor units enter the standby mode. ▪ Priority during high-power operation: If the indoor unit on which the priority room function is set operates at high power, the other indoor units will run with reduced capabilities.
Installation 6.8.5 About heat mode lock Heat mode lock limits the unit to heat operation. 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. 1×...
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Installation NOTICE When closing the outdoor unit cover, make sure that the tightening torque does NOT exceed 4.1 N•m. 3(A)MXM+3(A)MXF+4MXM+5MXM Installer reference guide R32 Split series 4P600463-1B – 2020.05...
Commissioning 7 Commissioning 7.1 Overview: Commissioning This chapter describes what you have to do and know to commission the system after it is installed. Typical workflow Commissioning typically consists of the following stages: Checking the "Checklist before commissioning". Performing a test run for the system. 7.2 Precautions when commissioning INFORMATION During the first running period of the unit, the required power may be higher than...
Commissioning The stop valves (gas and liquid) on the outdoor unit are fully open. Drainage Make sure drainage flows smoothly. Possible consequence: Condensate water might drip. The indoor unit receives the signals of the user interface. The specified wires are used for the interconnection cable. The fuses, circuit breakers, or locally installed protection devices are installed according to this document, and have NOT been bypassed.
Commissioning To perform a wiring error check INFORMATION ▪ You only have to perform a wiring error check if you are not sure that the electrical wiring and piping is connected correctly. ▪ If you perform a wiring error check, the hybrid for multi indoor unit will not operate by heat pump for 72 hours.
Commissioning 2 Measure the temperature at the indoor unit inlet and outlet after running the unit for about 20 minutes. The difference should be more than 8°C (cooling) or 20°C (heating). 3 First check operation of each unit individually, then check simultaneous operation of all indoor units.
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Commissioning Red LED Diagnosis Input over-current. Thermistor or CT abnormality. High temperature switch-box. High temperature at inverter circuit heat sink. Output over-current. Refrigerant shortage. Low voltage to main circuit or over voltage to main circuit. Reversing solenoid valve switching failure or high-pressure switching failure.
Hand-over to the user 8 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.
Maintenance and service 9 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.
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Maintenance and service DANGER: RISK OF ELECTROCUTION ▪ Use this compressor on a grounded system only. ▪ Turn the power off before servicing the compressor. ▪ Reattach the switch box cover and service lid after servicing. CAUTION Always wear safety goggles and protective gloves. DANGER: RISK OF EXPLOSION ▪...
Troubleshooting 10 Troubleshooting 10.1 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 10.3.2 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 room B, room C, room D, room E) for...
Disposal 11 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. 11.1 Overview: Disposal Typical workflow Disposing of the system typically consists of the following stages:...
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. Gas stop valve Closing direction Hexagonal wrench...
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Disposal 1× NOTICE Take care that while running forced cooling operation, the water temperature remains higher than 5°C (see temperature read out of the indoor unit). You can achieve this, for example, by activating all fans of the fan coil units. 3(A)MXM+3(A)MXF+4MXM+5MXM Installer reference guide R32 Split series...
Technical data 12 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). 12.1 Wiring diagram 12.1.1 Unified wiring diagram legend...
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Technical data Symbol Meaning 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) Harness H*P, LED*, V*L...
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Technical data ▪ Other components: refer to PED article 4, paragraph 3 NOTICE When the high pressure switch is activated, it MUST be reset by a qualified person. 3MXM40, 3MXM52, 3AMXM52, 3AMXF52, 3MXF52 7.9CuT 7.9CuT 6.4CuT (6.4CuT) 7.9CuT 7.9CuT 12.7CuT 7.9CuT 7.9CuT 6.4CuT...
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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4P600463-1B 2020.05 Verantwortung für Energie und Umwelt...