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Daikin RXF50F5V1B Installer's Reference Manual
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Daikin RXF50F5V1B Installer's Reference Manual

R32 split series
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Installer reference guide
R32 split series
RXF50F5V1B

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Summary of Contents for Daikin RXF50F5V1B

  • Page 1 Installer reference guide R32 split series RXF50F5V1B...
  • Page 2 To check for leaks ............................7.3.4 To perform vacuum drying ..........................8 Charging refrigerant About charging refrigerant............................. About the refrigerant ..............................Precautions when charging refrigerant ......................... To determine the additional refrigerant amount......................Installer reference guide RXF50F5V1B R32 split series 4P769827-16D – 2024.09...
  • Page 3 To start and stop forced cooling using the indoor unit user interface............17 Technical data 17.1 Wiring diagram ................................17.1.1 Unified wiring diagram legend ........................17.2 Piping diagram................................17.2.1 Piping diagram: Outdoor unit........................18 Glossary RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 4 WARNING Make sure installation, servicing, maintenance, repair and applied materials follow the instructions from Daikin (including all documents listed in “Documentation set”) and, in addition, comply with applicable legislation and are performed by qualified persons only. In Europe and areas where IEC standards apply, EN/IEC 60335-2-40 is the applicable standard.
  • Page 5 A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of the 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.
  • Page 6 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". RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 7 WARNING 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 unless otherwise specified. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).
  • 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. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D –...
  • Page 9 Keep the pipework installation to a minimum. To determine the minimum floor area 1 Determine the total refrigerant charge in the system (=  factory refrigerant charge additional refrigerant amount charged). RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 10 86.2 9.55 m Total refrigerant charge in the system Minimum floor area (a) Ceiling-mounted unit (= Ceiling-mounted unit) (b) Wall-mounted unit (= Wall-mounted unit) (c) Floor-standing unit (= Floor-standing unit) RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 11 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. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 12 The selection of the brine MUST be in accordance with the applicable legislation. WARNING Take sufficient precautions in case of brine leakage. If brine leaks, ventilate the area immediately and contact your local dealer. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 13 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. RXF50F5V1B Installer reference guide R32 split series...
  • Page 14 Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small head will damage the head and make proper tightening impossible. ▪ Over-tightening the terminal screws may break them. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 15 NOT turn electrical switches ON or OFF, ▪ do NOT strike matches or smoke, ▪ put out naked flames, ▪ open doors and windows immediately, ▪ keep people away from the affected area. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 16 BS 7671: 2018 Requirements for electrical installations. IET wiring regulations ▪ BS 7074: 1 Code of practice for domestic and hot water supply ▪ EN12828: 2014 Space heating for domestic premises RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 17 General safety precautions Potable water: all seals, joints and compounds (including flux and solder) and components used as part of the secondary domestic water system MUST be approved by WRAS. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 18 The refrigerant inside this unit is mildly flammable. 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. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 19 675. Do NOT vent these gases into the atmosphere. ▪ When charging refrigerant, ALWAYS use protective gloves and safety glasses. WARNING NEVER directly touch any accidental leaking refrigerant. This could result in severe wounds caused by frostbite. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 20 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. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 21 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. RXF50F5V1B Installer reference guide R32 split series...
  • Page 22 NEVER shunt safety devices or change their values to a value other than the factory default setting. If you are unable to find the cause of the problem, call your dealer. RXF50F5V1B Installer reference guide R32 split series...
  • Page 23 When the unit is NOT operating, the LEDs on the PCB are turned OFF in order to save power. ▪ Even when the LEDs are OFF, the terminal block and the PCB may be powered. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 24 4.1.1 To unpack the outdoor unit 4.1.2 To handle the outdoor unit CAUTION To avoid injury, do NOT touch the air inlet or aluminium fins of the unit. Only handle the outdoor unit as follows: RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 25 Fluorinated greenhouse gases label d Multilingual fluorinated greenhouse gases label e Drain plug (located on the bottom of the packing case) f Drain cap (1) g Drain cap (2) h Energy label RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 26 5.1 Identification NOTICE When installing or servicing several units at the same time, make sure NOT to switch the service panels between different models. 5.1.1 Identification label: Outdoor unit Location RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 27 Install units, power cables and communication wiring at least 3  m away from televisions or radios to prevent interference. Depending on the radio waves, a distance of 3 m may not be sufficient. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 28 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. RXF50F5V1B Installer reference guide R32 split series...
  • Page 29 Install the outdoor unit away from direct sea winds. Example: Behind the building. a Sea wind b Building c Outdoor unit If the outdoor unit is exposed to direct sea winds, install a windbreaker. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 30 NOT affect the unit. If lateral snowfall is possible, make sure that the heat exchanger coil is NOT affected by the snow. If necessary, install a snow cover or shed. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 31 Installing the outdoor unit. Providing drainage, see "6.3.5 To provide drainage" [  33] Protecting the unit against snow and wind by installing a snow cover and baffle plates. See "6.1 Preparing the installation site" [  27]. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 32 Fix the unit securely by means of foundation bolts in accordance with the foundation drawing. Prepare 4 sets of M8 or M10 anchor bolts, nuts and washers (field supply). (mm) a 100 mm above expected level of snow RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 33 ≤30 mm under the outdoor unit's feet. INFORMATION For information on the available options, contact your dealer. 1 Use a drain plug for drainage. 2 Use a Ø16 mm hose (field supply). RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 34 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. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 35 Unit installation RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 36 Gas piping Ø6.4 mm (1/4") Ø12.7 mm (1/2") Refrigerant piping material ▪ Piping material: phosphoric acid deoxidised seamless copper ▪ Flare connections: Only use annealed material. ▪ Piping temper grade and thickness: RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 37 NOT allowed for R32 refrigerant except for site made joints directly connecting the indoor unit to piping. Site made joints directly connecting piping to indoor units shall be of non-permanent type. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 38 ▪ 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. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 39 ALWAYS use 2 wrenches together when loosening a flare nut. ▪ ALWAYS use a spanner and torque wrench together to tighten the flare nut when connecting the piping. This to prevent nut cracking and leaks. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 40 4 Flare the pipe. Set exactly at the position as shown in the following figure. 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. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 41 Silicon sealant, make sure there is no gap. RXF50F5V1B Installer reference guide R32 split series...
  • Page 42 Piping length. Keep field piping as short as possible. ▪ Piping protection. Protect the field piping against physical damage. 1 Connect the liquid refrigerant connection from the indoor unit to the liquid stop valve of the outdoor unit. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 43 NOTICE Use this vacuum pump for R32 exclusively. Using the same pump for other refrigerants may damage the pump and the unit. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 44 Connect the vacuum pump and manifold as follows: a Low pressure gauge b Gauge manifold c High pressure gauge d Low-pressure valve (Lo) e High-pressure valve (Hi) f Charging hoses RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 45 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. RXF50F5V1B Installer reference guide R32 split series...
  • Page 46 1 All refrigerant is recovered from the system. 2 The outdoor unit's external refrigerant piping is checked (leak test, vacuum drying). 3 Vacuum drying on the outdoor unit's internal refrigerant piping is performed. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 47 ▪ Be aware that the refrigerant inside the system is odourless. WARNING NEVER directly touch any accidental leaking refrigerant. This could result in severe wounds caused by frostbite. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 48 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. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 49 × total refrigerant charge [in kg] / 1000 Use the GWP value mentioned on the refrigerant charge label. 2 Fix the label on the inside of the outdoor unit near the gas and liquid stop valves. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 50 ALWAYS use multicore cable for power supply cables. 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]. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 51 To prepare stranded conductor wire for installation Method 1: Twisting conductor 1 Strip insulation (20 mm) from the wires. 2 Slightly twist the end of the conductor to create a "solid-like" connection. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 52 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. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 53 Strip wire end to this point b An excessive strip length may cause electrical shock or leakage 3 Open the wire clamp. 4 Connect the interconnection cable and power supply as follows: RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 54 Circuit breaker (field provided fuse with rating according to the model name plate) d Residual current device e Power supply f Earth 3× 50 Hz 1 2 3 220~240 V 5 Tighten the terminal screws securely. We recommend using a Phillips screwdriver. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 55 3 Install the service cover. 10.2 Closing the unit 10.2.1 To close the outdoor unit NOTICE When closing the outdoor unit cover, make sure that the tightening torque does NOT exceed 1.3 N•m. 2× 1× RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 56 11.2.1 About the standby electricity saving function This mode turns OFF the power supply of the outdoor unit and sets the indoor unit into the standby saving mode to reduce the power consumption of the unit. RXF50F5V1B Installer reference guide R32 split series...
  • Page 57 11.2.2 To turn ON standby electricity saving function Prerequisite: The main power supply MUST be turned OFF. 1 Remove the service cover. 2 Disconnect the selective standby electricity saving connector. 3 Turn ON the main power supply. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 58 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 commissioning and hand-over to the user.
  • Page 59 Prerequisite: Refer to the operation manual of the indoor unit for setting temperature, operation mode…. 1 In cooling mode, select the lowest programmable temperature. In heating mode, select the highest programmable temperature. The test run can be disabled if necessary. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 60 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. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 61 Explain the user how to properly operate the system and what to do in case of problems. ▪ Show the user what to do for the maintenance of the unit. ▪ Explain about energy saving tips to the user as described in the operation manual. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 62 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 63 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. 14.4 About the compressor When servicing the compressor keep in mind following precautions: RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 64 Use a pipe cutter to remove the compressor. ▪ Do NOT use the brazing torch. ▪ Use approved refrigerants and lubricants only. DANGER: RISK OF BURNING/SCALDING Do NOT touch the compressor with bare hands. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 65 15.3 Solving problems based on symptoms 15.3.1 Symptom: Indoor units fall, vibrate or make noise Possible causes Corrective action The indoor units are NOT installed Install the indoor units securely. securely. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 66 For error code diagnosis use the wireless remote control delivered with the indoor unit. See the service manual for the complete list of error codes and a detailed troubleshooting guideline for each error. RXF50F5V1B Installer reference guide R32 split series...
  • Page 67 When the unit is NOT operating, the LEDs on the PCB are turned OFF in order to save power. ▪ Even when the LEDs are OFF, the terminal block and the PCB may be powered. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 68 (<−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. RXF50F5V1B Installer reference guide R32 split series...
  • Page 69 If forced cooling is used and the outside temperature is <−10°C, the safety device may prevent operation. Warm the outside temperature thermistor on the outdoor unit to ≥−10°C. Result: Operation will start. RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 70 A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of the 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 71 Neutral n=*, N=* Number of passes through ferrite core Pulse-amplitude modulation PCB* Printed circuit board Power module Switching power supply PTC* PTC thermistor Insulated gate bipolar transistor (IGBT) Circuit breaker RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 72 Diode bridge, Insulated-gate bipolar transistor (IGBT) power module Wireless remote controller Terminal Terminal strip (block) Electronic expansion valve coil Y*R, Y*S Reversing solenoid valve coil Ferrite core ZF, Z*F Noise filter RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 73 Other equipment: art. 4§3. RXF50F, ARXF50F S1PH Piping diagram legend Liquid stop valve Gas stop valve Refnet Muffler Muffler with filter Electronic expansion valve Filter Propeller fan High pressure switch (automatic reset) RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 74 Piping diagram legend Thermistor Capillary tube 4-way valve Accumulator Liquid receiver Compressor Heat exchanger Distributor Refrigerant flow: Cooling Refrigerant flow: Heating Field piping liquid 6.4 CuT Field piping gas 12.7 CuT RXF50F5V1B Installer reference guide R32 split series 4P769827-16D – 2024.09...
  • Page 75 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 76 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 Web: www.daikin.com.tr 4P769827-16D 2024.09...

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