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RXJ20M5V1B
RXJ25M5V1B
RXJ35M5V1B
RXA20A5V1B
RXA25A5V1B
RXA35A5V1B
RXM20R5V1B
RXM25R5V1B
RXM35R5V1B
ARXM25R5V1B
ARXM35R5V1B
Installer reference guide
R32 Split system air conditioners
RXJ20M5V1B9
RXJ25M5V1B9
RXJ35M5V1B9
RXA20A5V1B9
RXA25A5V1B9
RXA35A5V1B9
RXM20R5V1B9
RXM25R5V1B9
RXM35R5V1B9
ARXM25R5V1B9
ARXM35R5V1B9
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Summary of Contents for Daikin RXJ20M5V1B
- Page 1 Installer reference guide R32 Split system air conditioners RXJ20M5V1B RXJ20M5V1B9 RXJ25M5V1B RXJ25M5V1B9 RXJ35M5V1B RXJ35M5V1B9 RXA20A5V1B RXA20A5V1B9 RXA25A5V1B RXA25A5V1B9 RXA35A5V1B RXA35A5V1B9 RXM20R5V1B RXM20R5V1B9 RXM25R5V1B RXM25R5V1B9 RXM35R5V1B RXM35R5V1B9 ARXM25R5V1B ARXM25R5V1B9 ARXM35R5V1B ARXM35R5V1B9...
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Page 2: Table Of Contents
About the refrigerant..............................44 Precautions when charging refrigerant.......................... 45 To determine the additional refrigerant amount ......................45 To determine the complete recharge amount ......................45 To charge additional refrigerant............................. 45 Installer reference guide RXJ-M(9)_RXA-A(9)_RXM-R(9)_ARXM-R(9) R32 Split system Daikin air conditioners 4P519439-12M – 2021.02... - Page 3 Table of contents To fix the fluorinated greenhouse gases label ....................... 46 9 Electrical installation About connecting the electrical wiring .......................... 47 9.1.1 Precautions when connecting the electrical wiring..................47 9.1.2 Guidelines when connecting the electrical wiring..................49 9.1.3 Specifications of standard wiring components....................50 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: ▪...
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Page 9: Installation Space Requirements
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 ). -
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 NOTICE Only applicable if the power supply is three‑phase, and the compressor has an ON/ OFF starting method. If there exists the possibility of reversed phase after a momentary black out and the power goes on and off while the product is operating, attach a reversed phase protection circuit locally.
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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" [ 25]) 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 ▪ Use the flare nut fixed to the unit. ▪ To prevent gas leakage, apply refrigeration oil only to the inside of the flare. Use refrigeration oil for R32. ▪ Do NOT reuse joints. CAUTION ▪...
- Page 17 Specific installer safety instructions CAUTION To avoid compressor breakdown, do NOT charge more than the specified amount of refrigerant. WARNING NEVER directly touch any accidental leaking refrigerant. This could result in severe wounds caused by frostbite. Electrical installation (see "9 Electrical installation" [ 47]) WARNING...
- 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 CAUTION Do NOT insert fingers, rods or other objects into the air inlet or outlet. Do NOT remove the fan guard. When the fan is rotating at high speed, it will cause injury. Maintenance and service (see "14 Maintenance and service" [ 59])
- Page 20 Specific installer safety instructions WARNING ▪ When carrying out an inspection on the switch box of the unit, ALWAYS make sure that the unit is disconnected from the mains. Turn off the respective circuit breaker. ▪ When a safety device was activated, stop the unit and find out why the safety device was activated before resetting it.
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Page 21: 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 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. -
Page 22: 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 23 About the box d Multilingual fluorinated greenhouse gases label e Drain plug (located on the bottom of the packing case) f Energy label RXJ-M(9)_RXA-A(9)_RXM-R(9)_ARXM-R(9) Installer reference guide R32 Split system air conditioners 4P519439-12M – 2021.02...
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Page 24: About The Unit
About the unit 5 About the unit WARNING: MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable. 5.1 Overview: About the units and options This chapter contains information about: ▪ Identification of the outdoor unit 5.2 Identification NOTICE When installing or servicing several units at the same time, make sure NOT to switch the service panels between different models. -
Page 25: 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 26: 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 27 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 28: 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 specified in the table below (unless otherwise specified in the operation manual of the connected indoor unit). Model Cooling Heating... -
Page 29: Opening And Closing The Unit
Unit installation 6.2 Opening and closing the unit 6.2.1 About opening the units 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 30: Mounting The Outdoor Unit
Unit installation 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. Typical workflow Mounting the outdoor unit typically consists of the following stages: Providing the installation structure. -
Page 31: To Install The Outdoor Unit
Unit installation (mm) a 100 mm above expected level of snow 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 32: To Prevent The Outdoor Unit From Falling Over
Unit installation NOTICE If the unit is installed in a cold climate, take adequate measures so that the evacuated condensate CANNOT freeze. NOTICE If the drain holes of the outdoor unit are blocked up by a mounting base or floor surface, place additional foot bases ≤30 mm under the outdoor unit's feet. -
Page 33: 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 34: Refrigerant Piping Insulation
Piping installation 7.1.2 Refrigerant piping insulation ▪ Use polyethylene foam as insulation material: with a heat transfer rate between 0.041 and 0.052 W/mK (0.035 and 0.045 kcal/mh°C) with a heat resistance of at least 120°C ▪ Insulation thickness Pipe outer diameter (Ø ) Insulation inner diameter Insulation thickness (t) (Ø... -
Page 35: Precautions When Connecting The Refrigerant Piping
Piping installation ▪ 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: ▪ "2 General safety precautions" [ 5] ▪... -
Page 36: Guidelines When Connecting The Refrigerant Piping
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. -
Page 37: To Flare The Pipe End
Piping installation 7.2.5 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. - Page 38 Piping installation a Service port and service port cap b Valve stem c Field piping connection d Stem cap ▪ Keep both stop valves open during operation. ▪ Do NOT apply excessive force to the valve stem. Doing so may break the valve body.
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Page 39: 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. Piping Ø (mm) Tightening torque (N∙m) 22~28 33~39 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 40: Precautions When Checking The Refrigerant Piping
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. -
Page 41: To Perform Vacuum Drying
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... - Page 42 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 43: 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 44: 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 45: 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" [ 33] 8.4 To determine the additional refrigerant amount If the total liquid piping Then…... -
Page 46: To Fix The Fluorinated Greenhouse Gases Label
Charging refrigerant If pump down is needed in case of dismantling or relocating the system, see "16.2 To pump down" [ 63] 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 ×... -
Page 47: 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 Typical workflow Connecting the electrical wiring typically consists of the following stages:... - Page 48 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. ▪...
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Page 49: Guidelines When Connecting The Electrical Wiring
Electrical installation 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 – thermal overload relay lead wire h DB1 –... -
Page 50: Specifications Of Standard Wiring Components
Electrical installation 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. 9.1.3 Specifications of standard wiring components Component Class 20 Class 25+35 Power supply cable Voltage... - Page 51 Electrical installation 50 Hz 220-240 V a Interconnection cable b Power supply cable c Circuit breaker d Residual current device e Power supply f Earth 3× 5 Tighten the terminal screws securely. We recommend using a Phillips screwdriver. 6 Install the service cover. RXJ-M(9)_RXA-A(9)_RXM-R(9)_ARXM-R(9) Installer reference guide R32 Split system air conditioners...
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Page 52: 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 53: Configuration
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. Applicable for: RXM-R, ARXM-R, RXJ-M, RXA-A. 11.1.1 To set the facility mode When cutting jumper J6 on the PCB, the operation range will expand to –15°C. - Page 54 Configuration INFORMATION The standby electricity saving can ONLY be used for the units described above. WARNING Before connecting or disconnecting the connector, make sure the power supply is turned off. INFORMATION Selective connector for standby electricity saving is required if other than applicable indoor unit is connected.
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Page 55: 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 56: Checklist During Commissioning
Commissioning The indoor unit is properly mounted. The outdoor unit is properly mounted. The system is properly earthed and the earth terminals are tightened. The power supply voltage matches the voltage on the identification label of the unit. There are NO loose connections or damaged electrical components in the switch box. There are NO damaged components or squeezed pipes on the inside of the indoor and outdoor units. -
Page 57: Starting Up The Outdoor Unit
Commissioning INFORMATION ▪ Even if the unit is turned OFF, it consumes electricity. ▪ When the power turns back on after a power break, the previously selected mode will be resumed. 12.5 Starting up the outdoor unit See the indoor unit installation manual for configuration and commissioning of the system. -
Page 58: 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 59: 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. NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO equivalent. -
Page 60: About The Compressor
Maintenance and service ▪ 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. -
Page 61: 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. Before troubleshooting Carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring. -
Page 62: Fault Diagnosis Using Led On Outdoor Unit Pcb
Troubleshooting 15.4 Fault diagnosis using LED on outdoor unit PCB LED is… Diagnosis flashing Normal. ▪ Check the indoor unit. ▪ Turn the power OFF and back ON, and check the LED within approximately minutes. If the LED is ON again, the outdoor unit PCB is faulty. Supply voltage (for power saving). -
Page 63: 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 64: To Start And Stop Forced Cooling
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). ▪... -
Page 65: 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 68 DAIKIN ISITMA VE SOĞUTMA SİSTEMLERİ SAN.TİC. A.Ş. Gülsuyu Mahallesi, Fevzi Çakmak Caddesi, Burçak Sokak, No:20, 34848 Maltepe İSTANBUL / TÜRKİYE Tel: 0216 453 27 00 Faks: 0216 671 06 00 Çağrı Merkezi: 444 999 0 4P519439-12M 2021.02 Verantwortung für Energie und Umwelt...
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