Daikin CVXM20A2V1B Installer's Reference Manual
  1. Manuals
  2. Brands
  3. Daikin Manuals
  4. Air Conditioner
  5. CVXM20A2V1B
  6. Installer's reference manual

Daikin CVXM20A2V1B Installer's Reference Manual

Hide thumbs Also See for CVXM20A2V1B:
Table of Contents

Advertisement

Quick Links

CVXM20A2V1B
Installer reference guide
Split system air conditioners
FVXM25A2V1B
FVXM35A2V1B
FVXM50A2V1B

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the CVXM20A2V1B and is the answer not in the manual?

Questions and answers

Related Manuals for Daikin CVXM20A2V1B

Summary of Contents for Daikin CVXM20A2V1B

  • Page 1 Installer reference guide Split system air conditioners CVXM20A2V1B FVXM25A2V1B FVXM35A2V1B FVXM50A2V1B...

  • 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 9.2.1 To close the electrical wiring box and close the terminal block..............45 9.2.2 To re-install the front grille ..........................45 9.2.3 To re-install the front panel ........................... 45 10 Configuration 10.1 To set a different address ............................... 47 11 Commissioning 11.1 Overview: Commissioning ..............................

  • 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 NOTICE ▪ Do NOT re-use joints which have been used already. ▪ Joints made in installation between parts of refrigerant system shall be accessible for maintenance purposes. Installation space requirements WARNING If appliances contain R32 refrigerant, the floor area of the room in which the appliances are installed, operated and stored MUST be larger than the minimum floor area defined in table below A (m ).
  • Page 10 General safety precautions m (kg) 1.843 7.956 Ceiling-mounted Wall-mounted Floor-standing unit unit unit m (kg) m (kg) m (kg) ≤1.842 — ≤1.842 — ≤1.842 — 1.843 3.64 1.843 4.45 1.843 28.9 4.83 34.0 3.95 4.34 5.31 41.2 5.79 49.0 4.74 5.13 6.39 57.5...

  • Page 11: Refrigerant - In Case Of R410A Or R32

    General safety precautions (b) Wall-mounted unit (= Wall-mounted unit) (c) Floor-standing unit (= Floor-standing unit) 2.2.3 Refrigerant — in case of R410A or R32 If applicable. See the installation manual or installer reference guide of your application for more information. NOTICE Make sure refrigerant piping installation complies with applicable legislation.

  • Page 12: Brine

    General safety precautions WARNING Make sure there is no oxygen in the system. Refrigerant may only be charged after performing the leak test and the vacuum drying. Possible consequence: Self-combustion and explosion of the compressor because of oxygen going into the operating compressor. ▪...

  • Page 13: Water

    General safety precautions WARNING The ambient temperature inside the unit can get much higher than that of the room, e.g. 70°C. In case of a brine leak, hot parts inside the unit can create a hazardous situation. WARNING The use and installation of the application MUST comply with the safety and environmental precautions specified in the applicable legislation.
  • Page 14 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 15 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.

  • Page 16: 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" [  23]) 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).
  • Page 17 Specific installer safety instructions 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. ▪...

  • Page 18: About The Box

    About the box 4 About the box 4.1 Indoor unit 4.1.1 To unpack the indoor unit 4.1.2 To remove the accessories from the indoor unit 1 Remove the accessories located at the bottom of the package. Spare SSID sticker is located on the unit. 1×...
  • Page 19 About the box Screws ▪ Spare SSID sticker. Do NOT throw away the spare sticker. Keep it in a safe place in case it is needed in the future (e.g. in case the front grille is replaced, attach it to the new front grille). CVXM20+FVXM25~50A2V1B Installer reference guide Split system air conditioners...

  • Page 20: About The Unit

    About the unit 5 About the unit WARNING: MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable. Following symbols may occur on the indoor unit: Symbol Explanation Measure the voltage at the terminals of main circuit capacitors or electrical components before servicing.

  • Page 21: About The Wireless Lan

    INFORMATION ▪ 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. ▪ This unit is considered as combined equipment according to the definition of Directive 2014/53/EU.
  • Page 22 ▪ Wireless LAN access point. ▪ Installed free Daikin Residential Controller application. To install the Daikin Residential Controller application 1 Open: ▪ Google Play for appliances using Android. ▪ App Store for appliances using iOS. 2 Search for Daikin Residential Controller.

  • Page 23: Unit Installation

    Unit installation 6 Unit installation In this chapter Preparing the installation site ..............................6.1.1 Installation site requirements of the indoor unit ....................Opening the indoor unit ................................. 6.2.1 To remove the front panel............................. 6.2.2 To remove the front grille............................6.2.3 To open the terminal block and remove the electrical wiring box cover .............
  • Page 24 Unit installation ▪ Fluorescent lights. When installing a wireless user interface in a room with fluorescent lights, mind the following to avoid interference: Install the wireless user interface as close as possible to the indoor unit. Install the indoor unit as far as possible from the fluorescent lights. ▪...

  • Page 25: Opening The Indoor Unit

    Unit installation 6.2 Opening the indoor unit 6.2.1 To remove the front panel 1 Slide both sliders in the direction of the arrows until they click. 2 Open the front panel and undo the string. 3 Remove the front panel. 6.2.2 To remove the front grille 1 Remove the front panel.

  • Page 26: Mounting The Indoor Unit

    Unit installation 4 Move the metal plate cover down and then towards you to remove it. Screw Sensor securing plate Metal plate cover To remove the electrical wiring box cover 1 Open the terminal block. 2 Remove 1 screw from the electrical wiring box. 3 Unhook the 2 tabs on the electrical wiring box cover and remove it.
  • Page 27 Unit installation Floor-standing installation (mm)   6‒1 Indoor unit installation drawing: Floor-standing installation Front view Side view Top view Screw hole 6× Left-back piping hole location Right-back piping hole location Left/right piping hole location Left-bottom piping hole location Right-bottom piping hole location 1 Drill a wall hole, depending on which side piping is taken out.
  • Page 28 Unit installation Wall-mounted installation (mm)   6‒2 Indoor unit installation drawing: Wall-mounted installation Front view Side view Top view Mounting plate Screw hole 4× Floor Left-back piping hole location Right-back piping hole location Left/right piping hole location Left-bottom piping hole location Right-bottom piping hole location 6 Temporarily secure the mounting plate on the wall.
  • Page 29 Unit installation Bottom frame Slit portion 14 Align the unit using the alignment symbol on the mounting plate: 375  mm from the alignment symbol to the each side (unit width 750  mm), 487 mm from the alignment symbol to the bottom of the unit. 15 Hook the unit on the mounting plate and secure the unit to the wall using 4 screws M4×25L (field supply).
  • Page 30 Unit installation Half-concealed installation (mm)   6‒3 Indoor unit installation drawing: Half-concealed installation Front view Side view Top view Extra filler board Screw hole 6× Hole Left-back piping hole location Right-back piping hole location Right/left piping hole location Left-bottom piping hole location Right-bottom piping hole location 17 Make a hole in the wall as illustrated above.

  • Page 31: To Drill A Wall Hole

    Unit installation 23 When the complete installation is finished, attach the front panel and the front grille in their original position. 6.3.2 To drill a wall hole CAUTION 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.

  • Page 32: To Provide Drainage

    Unit installation 2 Remove an burrs along the cut section using a half round needle file. 6.3.4 To provide drainage Make sure condensation water can be evacuated properly. This involves: ▪ General guidelines ▪ Connecting the drain piping to the indoor unit ▪...
  • Page 33 Unit installation ▪ Condensation. Take measures against condensation. Insulate the complete drain piping in the building. To connect the drain piping to the indoor unit NOTICE Incorrect connection of the drain hose might cause leaks, and damage the installation space and surroundings. 1 Push the drain hose (accessory) as far as possible over the drain socket and fix it with 1 screw (accessory).

  • Page 34: Mounting The User Interface

    Unit installation 6.4 Mounting the user interface 6.4.1 To mount the user interface holder 2× User interface Screws (field supply) User interface holder 1 Choose a place where the signal can reach the unit. 2 Fix the user interface holder (accessory) to the wall or a similar location using 2 M3×20L screws (field supply).

  • Page 35: 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..........................Connecting the refrigerant piping............................7.2.1 About connecting the refrigerant piping....................... 7.2.2 Precautions when connecting the refrigerant piping.................... 7.2.3 Guidelines when connecting the refrigerant piping....................7.2.4 Pipe bending guidelines ............................

  • Page 36: 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 37: Guidelines When Connecting The Refrigerant Piping

    Piping installation 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 ▪ Do NOT use mineral oil on flared part. ▪...

  • Page 38: Pipe Bending Guidelines

    Piping installation ▪ 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. Torque wrench Spanner Piping union Flare nut...

  • Page 39: To Connect The Refrigerant Piping To The Indoor Unit

    Piping installation 5 Check that the flaring is properly made. Flare’s inner surface MUST be flawless. The pipe end MUST be evenly flared in a perfect circle. Make sure the flare nut is fitted. 7.2.6 To connect the refrigerant piping to the indoor unit WARNING: MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable.

  • Page 40: Electrical Installation

    Electrical installation 8 Electrical installation In this chapter About connecting the electrical wiring ..........................8.1.1 Precautions when connecting the electrical wiring ....................8.1.2 Guidelines when connecting the electrical wiring ....................8.1.3 Specifications of standard wiring components ..................... To connect the electrical wiring to the indoor unit ....................... To connect optional accessories (wired user interface, central user interface, wireless adapter, etc.)......

  • Page 41: Guidelines When Connecting The Electrical Wiring

    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. ▪...

  • Page 42: Specifications Of Standard Wiring Components

    Electrical installation Round crimp-style terminal ▪ Use the following methods for installing wires: Wire type Installation method Single-core wire AA´ A´ a Curled single-core wire b Screw c Flat washer Stranded conductor wire with round crimp-style terminal a Terminal b Screw c Flat washer O Allowed X NOT allowed...

  • Page 43: To Connect Optional Accessories (Wired User Interface, Central User Interface, Wireless Adapter, Etc.)

    Electrical installation Terminal block Electrical component block Cable clamp 5 Pull the wires to make sure that they are securely attached, then retain the wires with the cable clamp. 6 Make sure that the wires do not come in contact with the metal parts of the heat exchanger.
  • Page 44 Electrical installation 4 Close the electrical wiring box cover. See "9.2  To close the indoor unit" [  45]. CVXM20+FVXM25~50A2V1B Installer reference guide Split system air conditioners 4P625991-1 – 2020.06...

  • Page 45: Finishing The Indoor Unit Installation

    Liquid pipe insulation 2 Pass the pipes through the wall hole and seal the gaps with putty. 3 Remove the protection foil from the Daikin eye. INFORMATION Be careful when removing the protection foil to avoid damage of the sticker under it.
  • Page 46 Finishing the indoor unit installation 2 Close the front panel and slide both sliders until they click. 3 Push on the sides of the front panel to make sure the front panel is securely fixed. CVXM20+FVXM25~50A2V1B Installer reference guide Split system air conditioners 4P625991-1 –...

  • Page 47: Configuration

    Result: The Daikin eye will start to blink. 6 Press the indoor unit ON/OFF switch while the Daikin eye is blinking. INFORMATION If the setting could NOT be completed while the Daikin eye was blinking, repeat the setting process from the beginning. CVXM20+FVXM25~50A2V1B...
  • Page 48 Configuration 7 When the setting is complete, press Result: The user interface will return to the home screen. CVXM20+FVXM25~50A2V1B Installer reference guide Split system air conditioners 4P625991-1 – 2020.06...

  • Page 49: Commissioning

    Commissioning 11 Commissioning 11.1 Overview: Commissioning This chapter describes what you have to do and know to commission the system after it is installed. Typical workflow Commissioning typically consists of the following stages: Checking the "Checklist before commissioning". Performing a test run for the system. 11.2 Checklist before commissioning After the installation of the unit, first check the items listed below.

  • Page 50: To Perform A Test Run

    Commissioning The stop valves (gas and liquid) on the outdoor unit are fully open. 11.3 To perform a test run Prerequisite: Power supply MUST be in the specified range. Prerequisite: Test run may be performed in cooling or heating mode. Prerequisite: Test run should be performed in accordance with the operation manual of the indoor unit to make sure that all functions and parts are working properly.

  • Page 51: Hand-Over To The User

    Hand-over to the user 12 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 52: Disposal

    Disposal 13 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. CVXM20+FVXM25~50A2V1B Installer reference guide Split system air conditioners...

  • Page 53: Technical Data

    Technical data 14 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). 14.1 Wiring diagram 14.1.1 Unified wiring diagram legend...
  • Page 54 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...
  • Page 55 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 56: 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 4P625991-1 2020.06 Verantwortung für Energie und Umwelt...

This manual is also suitable for:

Fvxm25a2v1bFvxm35a2v1bFvxm50a2v1b

Table of Contents