Daikin 3MXM40N2V1B9 Installer's Reference Manual
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- Installer's reference manual (76 pages)
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Summary of Contents for Daikin 3MXM40N2V1B9
- Page 1 Installer reference guide R32 Split series 2MXM68N2V1B 3MXF52A2V1B9 3MXF68A2V1B9 3MXM40N2V1B9 3MXM40N2V1B8 4MXM68N2V1B9 3MXM40N2V1B7 4MXM80N2V1B9 3MXM52N2V1B9 5MXM90N2V1B9 3MXM52N2V1B8 3MXM52N2V1B7 3MXM68N2V1B9 3AMXM52N2V1B9 3AMXF52A2V1B9...
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Page 2: Table Of Contents
Table of contents Table of contents 1 About the documentation About this document ..............................2 General safety precautions About the documentation .............................. 2.1.1 Meaning of warnings and symbols ........................ For the installer ................................2.2.1 General ................................2.2.2 Installation site ............................... 2.2.3 Refrigerant —... - Page 3 Table of contents To fix the fluorinated greenhouse gases label ....................... 49 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.....................
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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). ▪ The full set of latest technical data is available on the Daikin Business Portal (authentication required). -
Page 5: General Safety Precautions
General safety precautions 2 General safety precautions 2.1 About the documentation ▪ The original documentation is written in English. All other languages are translations. ▪ The precautions described in this document cover very important topics, follow them carefully. ▪ The installation of the system, and all activities described in the installation manual and in the installer reference guide MUST be performed by an authorised installer. -
Page 6: For The Installer
Improper installation or attachment of equipment or accessories could result in electrical shock, short-circuit, leaks, fire or other damage to the equipment. Only use accessories, optional equipment and spare parts made or approved by Daikin. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation). -
Page 7: Installation Site
General safety precautions WARNING Provide adequate measures to prevent that the unit can be used as a shelter by small animals. Small animals that make contact with electrical parts can cause malfunctions, smoke or fire. CAUTION Do NOT touch the air inlet or aluminium fins of the unit. CAUTION ▪... - Page 8 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: ▪...
- Page 9 General safety precautions 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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Page 10: Refrigerant - In Case Of R410A Or R32
General safety precautions Ceiling-mounted Wall-mounted Floor-standing unit unit unit m (kg) m (kg) A m (kg) A ≤1.842 — ≤1.842 — ≤1.842 — 1.843 28.9 1.843 3.64 1.843 4.45 3.95 4.83 34.0 4.34 5.31 41.2 5.79 49.0 4.74 5.13 6.39 57.5 7.41 66.7... - Page 11 General safety precautions WARNING Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks, ventilate the area immediately. Possible risks: ▪ Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency. ▪ Toxic gas might be produced if refrigerant gas comes into contact with fire. DANGER: RISK OF EXPLOSION Pump down –...
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Page 12: Electrical
General safety precautions Then A siphon tube is present Charge with the cylinder upright. (i.e., the cylinder is marked with "Liquid filling siphon attached") A siphon tube is NOT present Charge with the cylinder upside down. ▪ Open refrigerant cylinders slowly. ▪... - Page 13 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.
- Page 14 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.
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Page 15: Specific Installer Safety Instructions
Specific installer safety instructions 3 Specific installer safety instructions Always observe the following safety instructions and regulations. Unit installation (see "6 Unit installation" [ 24]) 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. Installation site (see "6.1 Preparing the installation site" [... - Page 16 Specific installer safety instructions CAUTION ▪ 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. 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 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 ▪...
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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 4.2.2 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×... - 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 Drain socket 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...
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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 Overview: About the unit This chapter contains information about: 5.2 Identification... -
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 in a room without continuously operating ignition sources (example: open flames, an operating gas appliance or an operating electric heater). 6.1.1 Installation site requirements of the outdoor unit INFORMATION Also read the following requirements: ▪... - Page 26 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.
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Page 27: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
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 (unless otherwise specified in the operation manual of the connected indoor unit): Cooling mode Heating mode –10~46°C DB... -
Page 28: Opening The Unit
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. -
Page 29: Precautions When Mounting The Outdoor Unit
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" [ 5] ▪ "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. -
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 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× Ø9.5 mm (3/8") 1× Ø12.7 mm (1/2") 2× Ø15.9 mm (5/8") ▪ Piping temper grade and thickness: Outer diameter (Ø) Temper grade Thickness (t) -
Page 34: Refrigerant Piping Length And Height Difference
Piping installation 7.1.3 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. -
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 CAUTION ▪ Use the flare nut fixed to the main unit. ▪ To prevent gas leakage, apply refrigeration oil only to the inside of the flare. Use refrigeration oil for R32. ▪ Do NOT reuse joints. 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 — 3MXF52, 3AMXF52, 3MXF68 A (Ø9.5 mm) 20, 25, 35 —...
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Page 40: Using The Stop Valve And Service Port
Piping installation Reducer type Connection 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 a Outdoor unit connection port b Reducer no. 1 c Reducer no. 3 d Flare nut for Ø15.9 mm e Inter-unit piping ▪... - 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 ▪...
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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.
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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" [ 5] ▪ "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 "9.1.3 Specifications of standard wiring components" [ 53]. WARNING ▪ All wiring MUST be performed by an authorised electrician and MUST comply with the applicable legislation. ▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation.
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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 Model 4MXM80 3- core cable 4.0 mm 25 A H07RN-F (60245 IEC 66) 5MXM90 32 A 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. - Page 55 Electrical installation 8 Pass the wiring through the cutout on the bottom of the protection plate. 9 Make sure the electrical wiring does not contact with the gas piping. 1 2 3 2× 1 2 3 a Wire retainer 10 Reattach the switch box cover and the service cover. 2MXM68+3(A)MXM+3(A)MXF+4MXM+5MXM Installer reference guide R32 Split series...
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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 2MXM68+3(A)MXM+3(A)MXF+4MXM+5MXM Installer reference guide R32 Split series 4P600463-1D – 2021.03...
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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 12.3 Checklist before commissioning After the installation of the unit, first check the items listed below. Once all checks are fulfilled, the unit must be closed. Power-up the unit after it is closed. The indoor unit is properly mounted. The outdoor unit is properly mounted. -
Page 63: About Wiring Error Check
Commissioning The stop valves (gas and liquid) on the outdoor unit are fully open. Initialization of the Multi system can take several minutes depending on the number of indoor units and options used. 12.5.1 About wiring error check The wiring error check function will check and automatically correct any wiring errors. -
Page 64: To Perform A Test Run
Commissioning ▪ LEDs flash alternately: automatic correction is completed. ▪ One or more LEDs are permanently on: abnormal stop (follow the diagnosis procedure on the back of the right side plate and refer to service manual). 12.5.2 To perform a test run Prerequisite: Power supply MUST be in the specified range. -
Page 65: 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 66: Maintenance And Service
Maintenance and service 14 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. 14.1 Overview: Maintenance and service This chapter contains information about: ▪... -
Page 67: About The Compressor
Maintenance and service 14.4 About the compressor When servicing the compressor keep in mind following precautions: 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. -
Page 68: 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 Before troubleshooting Carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring. -
Page 69: 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 room B, room C, room D, room E) for... -
Page 70: 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 71 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. 2MXM68+3(A)MXM+3(A)MXF+4MXM+5MXM Installer reference guide R32 Split series...
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Page 72: 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 73: 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 74 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. 2MXM68+3(A)MXM+3(A)MXF+4MXM+5MXM Installer reference guide R32 Split series...
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Page 75: 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 17.1.1 Unified wiring diagram legend... - Page 76 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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Page 77: Piping Diagram: Outdoor Unit
Technical data Symbol Meaning 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 S*RH Humidity sensor S*W, SW* Operation switch SA*, F1S... - Page 78 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. 2MXM68 7.9CuT 7.9CuT 6.4CuT (6.4CuT) 7.9CuT 7.9CuT 12.7CuT 7.9CuT 7.9CuT 6.4CuT 9.5CuT (6.4CuT) 7.9CuT 9.5CuT...
- Page 79 Technical data 3MXM40, 3MXM52, 3AMXM52, 3AMXF52, 3MXF52 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, 3MXF68 7.9CuT 7.9CuT 6.4CuT...
- Page 80 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 81 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...
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Page 82: 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 4P600463-1D 2021.03 Verantwortung für Energie und Umwelt...