Daikin FTXJ20A2V1BW Installer's Reference Manual

Daikin FTXJ20A2V1BW Installer's Reference Manual

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Installer reference guide
Daikin room air conditioner
FTXJ20A2V1BS
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FTXJ42A2V1BS
FTXJ50A2V1BS
FTXJ20A2V1BB
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FTXJ42A2V1BB
FTXJ50A2V1BB

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Summary of Contents for Daikin FTXJ20A2V1BW

  • Page 1 Installer reference guide Daikin room air conditioner FTXJ20A2V1BW FTXJ20A2V1BS FTXJ20A2V1BB FTXJ25A2V1BW FTXJ25A2V1BS FTXJ25A2V1BB FTXJ35A2V1BW FTXJ35A2V1BS FTXJ35A2V1BB FTXJ42A2V1BW FTXJ42A2V1BS FTXJ42A2V1BB FTXJ50A2V1BW FTXJ50A2V1BS FTXJ50A2V1BB...
  • Page 2: Table Of Contents

    To connect optional accessories (wired user interface, central user interface, etc.) ........... 42 9 Finishing the indoor unit installation To insulate the drain piping, refrigerant piping and interconnection cable..............43 Installer reference guide FTXJ-A(W)(S)(B) Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 3 13 Troubleshooting 13.1 Solving problems based on error codes ......................... 51 14 Disposal 15 Technical data 15.1 Wiring diagram................................55 15.1.1 Unified wiring diagram legend ........................55 16 Glossary FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • 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: Meaning Of Warnings And Symbols

    Symbols used in the documentation: Symbol Explanation Indicates a figure title or a reference to it. Example: " 1–3 Figure title" means "Figure 3 in chapter 1". FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 6 About the documentation Symbol Explanation Indicates a table title or a reference to it. Example: " 1–3 Table title" means "Table 3 in chapter 1". FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 7: General Safety Precautions

    Improper installation or attachment of equipment or accessories could result in electrical shock, short-circuit, leaks, fire or other damage to the equipment. ONLY use accessories, optional equipment and spare parts made or approved by Daikin. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).
  • Page 8: Installation Site

    WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons. CAUTION Do NOT use potential sources of ignition in searching for or detection of refrigerant leaks.
  • 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). FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 10 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) FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 11: Refrigerant - In Case Of R410A Or R32

    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. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 12: Electrical

    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. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 13 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. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 14 ON and OFF while the product is operating, attach a reversed phase protection circuit locally. Running the product in reversed phase can break the compressor and other parts. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 15: Specific Installer Safety Instructions

    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. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 16 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. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 17: About The Box

    1× 2× 2× 2× 1× 1× 2× 1× a Installation manual b Operation manual c General safety precautions d Titanium apatite deodorising filter and silver particle filter (Ag-ion filter) FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 18 Spare SSID sticker. Do NOT throw away the spare sticker. Keep it in a safe place in case it is needed in future (e.g. in case the front grille was replaced attach it to the new front grille). FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 19: About The Unit

    A safety device might stop the operation of the system if the unit runs outside its operation range. Condensation and water dripping might occur if the unit runs outside its operation range. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 20: About The Wireless Lan

    INFORMATION: Declaration of conformity ▪ Daikin Industries Czech Republic s.r.o. declares that the radio equipment type inside of this unit is in compliance with Directive  2014/53/EU and S.I. 2017/1206: Radio Equipment Regulations 2017. ▪...
  • Page 21 Result: The QR code will re-direct you to the App Store or Google Play. 5 Follow the directions on the screen to install. INFORMATION If the QR code is difficult to read, switch the displayed QR code using , then try again. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 22: Unit Installation

    INFORMATION The sound pressure level is less than 70 dBA. ▪ Air flow. Make sure nothing blocks the air flow. ▪ Drainage. Make sure condensation water can be evacuated properly. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 23 ≥50 ≥50 (mm) Note: Make sure that there are no obstacles within 500  mm under the infrared signal receiver. They may influence reception performance of the wireless remote control. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 24: Opening The Unit

    2 Open the panel locks on the back side of the panel (1 on each side). a Panel lock 3 Push the right arm lightly to the right to disconnect the shaft from the shaft slot on the right side. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 25: To Open The Service Cover

    2 Pull out the service cover horizontally away from the unit. a Service cover b Service cover screw NOTICE When closing the service cover, make sure that the tightening torque does NOT exceed 1.4 (±0.2) N•m. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 26: To Remove The Front Grille

    7 Slide the flat screwdriver in the direction of triangle on the rib into the half- moon shaped dent on the grille. a Triangle symbol 8 Slightly press down the front grille and insert the screwdriver in slot next to the hooks. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 27: To Remove The Electrical Wiring Box Cover

    2 Level the mounting plate. 3 Mark the centres of the drilling points on the wall using a tape measure. Position the end of tape measure at symbol " ". FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 28: To Drill A Wall Hole

    For walls containing a metal frame or a metal board, use a wall embedded pipe and wall cover in the feed-through hole to prevent possible heat, electrical shock, or fire. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 29: To Remove The Pipe Port Cover

    2 Remove any burrs along the cut section using a half round needle file. NOTICE Do NOT use nippers to remove the pipe port cover, as this would damage the front grille. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 30: Connecting The Drain Piping

    Drain socket with nominal Ø13 mm (field supply) c Ridgid polyvinyl chloride pipe (field supply) ▪ Condensation. Take measures against condensation. Insulate the complete drain piping in the building. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 31: To Connect The Piping On Right Side, Right-Back, Or Right-Bottom

    Do NOT apply lubricating oil (refrigerant oil) to the drain plug when inserting it. The drain plug may deteriorate and cause drain leakage from the plug. a 4 mm hexagonal wrench FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 32: To Check For Water Leaks

    Remove the pipe port cover here for left-bottom piping 6.4.4 To check for water leaks 1 Remove the air filters. 2 Gradually pour approximately 1  l of water in the drain pan, and check for water leaks. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 33: Piping Installation

    12.7 mm (1/2") Depending on the applicable legislation and the maximum working pressure of the unit (see "PS High" on the unit name plate), larger piping thickness might be required. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 34: Refrigerant Piping Insulation

    7.2.2 Precautions when connecting the refrigerant piping INFORMATION Also read the precautions and requirements in the following chapters: ▪ "2 General safety precautions" [  7] ▪ "7.1 Preparing refrigerant piping" [  33] DANGER: RISK OF BURNING/SCALDING FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 35: Guidelines When Connecting The Refrigerant Piping

    Take the following guidelines into account when connecting pipes: ▪ 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. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 36: Pipe Bending Guidelines

    3 Remove the flare nut from the stop valve and put the flare nut on the pipe. 4 Flare the pipe. Set exactly at the position as shown in the following figure. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 37: To Connect The Refrigerant Piping To The Indoor Unit

    See "9.1  To insulate the drain piping, refrigerant piping and interconnection cable" [  43]. NOTICE Make sure to insulate all refrigerant piping. Any exposed piping might cause condensation. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 38: Electrical Installation

    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 "8.1.3 Specifications of standard wiring components" [  40]. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 39: Guidelines When Connecting The Electrical Wiring

    Place the round crimp-style terminal on the wire up to the covered part and fasten the terminal with the appropriate tool. a Stranded conductor wire b Round crimp-style terminal ▪ Use the following methods for installing wires: FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 40: Specifications Of Standard Wiring Components

    1 Set the indoor unit on the mounting plate hooks. Use the " " marks as a guide. a Mounting plate (accessory) b Piece of packing material FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 41 9 Pull the wires to make sure that they are securely attached, then retain the wires with the wire retainer. 10 Shape the wires so that the service cover fits securely, then close the service cover. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 42: To Connect Optional Accessories (Wired User Interface, Central User Interface, Etc.)

    S21 connector 3 Put the electrical wiring box cover back and pull the wire harness around it as shown in the figure above. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 43: Finishing The Indoor Unit Installation

    1 Shape the refrigerant pipes along the pipe path marking on the mounting plate. a Drain hose b Caulk this hole with putty or caulking material c Adhesive vinyl tape d Insulation tape e Mounting plate (accessory) FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 44: To Fix The Unit On The Mounting Plate

    4 Insert the wire harness back into the connector and secure it with the wire clamp. 5 Close the front panel. Refer to "9.4.4 To close the front panel" [  45]. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 45: To Close The Service Cover

    1 Open the front panel and turn the flap up. 2 Install both screw covers (1 on each side). 2× 3 Return flap to its original position and close the front panel. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 46: Commissioning

    10 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 47: To Perform A Test Run

    6 Change status to ON by 7 Press to confirm the selection. Result: The indoor unit enter test run mode, during which normal operation is not possible. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 48 The test run is only completed if the indoor unit does not report any error code. ▪ See the service manual for the complete list of error codes and a detailed troubleshooting guideline for each error. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 49: Configuration

    “Documentation”. ▪ Indoor unit setting: brightness of the Daikin eye, open the front panel, wireless LAN connection, vertical airflow function, indoor unit installation position, keep dry function ▪ Wireless remote control setting: LCD contrast, LCD brightness, LCD turn off time,...
  • Page 50: Hand-Over To The User

    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. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 51: Troubleshooting

    A more detailed troubleshooting guideline for each error Position Error Description code Normal Outdoor unit: High pressure peak cut / freeze protection problem Outdoor unit: Malfunction of outdoor unit fan motor FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 52 Outdoor unit: Defect of power supply voltage Outdoor unit: Cool/heat switchover problem Indoor unit: Streamer unit abnormality Outdoor unit: Abnormal high pressure actuation of high pressure switch Outdoor unit: Actuation of high pressure switch FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 53 Description code Outdoor unit: Malfunction of high pressure switch System shutdown due to compressor internal temperature abnormality Outdoor unit: Power input overvoltage Outdoor unit: Automatic refrigerant charge operation completed FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 54: Disposal

    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. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 55: Technical Data

    Technical data 15 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). 15.1 Wiring diagram The wiring diagram is delivered with the unit, located on the inner right side of the indoor unit front grille.
  • Page 56 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 FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 57 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 FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
  • Page 58: 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 60 4P518023-12K 2022.05 Verantwortung für Energie und Umwelt...

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