Daikin FXFQ20BVEB Installer And User Reference Manual
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Summary of Contents for Daikin FXFQ20BVEB
- Page 1 Installer and user reference guide VRV system air conditioner FXFQ20BVEB FXFQ25BVEB FXFQ32BVEB FXFQ40BVEB FXFQ50BVEB FXFQ63BVEB FXFQ80BVEB FXFQ100BVEB FXFQ125BVEB...
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Page 2: Table Of Contents
Table of contents Table of contents 1 General safety precautions About the documentation .............................. 1.1.1 Meaning of warnings and symbols ........................ For the user..................................For the installer ................................1.3.1 General ................................1.3.2 Installation site ............................... 1.3.3 Refrigerant — in case of R410A or R32......................1.3.4 Electrical ................................. - Page 3 Table of contents Checklist before commissioning............................. 43 To perform a test run..............................43 Error codes when performing a test run........................45 9 Hand-over to the user 10 Disposal 11 Technical data 11.1 Piping diagram: Indoor unit ............................48 11.2 Wiring diagram................................48 11.2.1 Unified wiring diagram legend ........................
- Page 4 Table of contents 19 Relocation 20 Disposal 21 Glossary Installer and user reference guide FXFQ20~125BVEB VRV system air conditioner 4P561452-1B – 2021.07...
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Page 5: General Safety Precautions
General safety precautions 1 General safety precautions 1.1 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 User
General safety precautions Symbol Explanation Before installation, read the installation and operation manual, and the wiring instruction sheet. Before performing maintenance and service tasks, read the service manual. For more information, see the installer and user reference guide. The unit contains rotating parts. Be careful when servicing or inspecting the unit. -
Page 7: 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. FXFQ20~125BVEB Installer and user reference guide VRV system air conditioner 4P561452-1B –... -
Page 8: Installation Site
General safety precautions WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation). CAUTION Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or servicing the system. -
Page 9: Refrigerant - In Case Of R410A Or R32
General safety precautions ▪ In places where there is machinery that emits electromagnetic waves. Electromagnetic waves may disturb the control system, and cause malfunction of the equipment. ▪ In places where there is a risk of fire due to the leakage of flammable gases (example: thinner or gasoline), carbon fibre, ignitable dust. - Page 10 General safety precautions NOTICE ▪ To avoid compressor breakdown, do NOT charge more than the specified amount of refrigerant. ▪ When the refrigerant system is to be opened, refrigerant MUST be treated according to the applicable legislation. WARNING Make sure there is no oxygen in the system. Refrigerant may only be charged after performing the leak test and the vacuum drying.
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Page 11: Electrical
General safety precautions 1.3.4 Electrical DANGER: RISK OF ELECTROCUTION ▪ Turn OFF all power supply before removing the switch box cover, connecting electrical wiring or touching electrical parts. ▪ 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. - Page 12 General safety precautions NOTICE Precautions when laying power wiring: ▪ Do NOT connect wiring of different thicknesses to the power terminal block (slack in the power wiring may cause abnormal heat). ▪ When connecting wiring which is the same thickness, do as shown in the figure above.
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Page 13: 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 14: For The Installer
For the installer FXFQ20~125BVEB Installer and user reference guide VRV system air conditioner 4P561452-1B – 2021.07... -
Page 15: About The Box
About the box 3 About the box 3.1 Overview: About the box This chapter describes what you have to do after the box with the indoor unit is delivered on-site. It contains information about: ▪ Unpacking and handling the unit ▪... -
Page 16: To Remove The Accessories From The Indoor Unit
About the box 3.2.2 To remove the accessories from the indoor unit 1× 1× 1× 8× 4× 7× 1× 4× 1× 1× 1× 1× a Paper pattern for installation (upper part of packing) b General safety precautions c Indoor unit installation and operation manual d Installation guide e Washers for hanger brackets f Screws (to temporarily attach the paper pattern for installation to the indoor unit) -
Page 17: About The Units And Options
About the units and options 4 About the units and options 4.1 Overview: About the units and options This chapter contains information about: ▪ Identifying the indoor unit ▪ Combining outdoor and indoor units ▪ Combining the indoor unit with options INFORMATION For year‑round cooling applications with low indoor humidity conditions, such as Electronic Data Processing rooms, contact your dealer or see the engineering... -
Page 18: System Layout
About the units and options 4.3 System layout a Indoor unit b Outdoor unit c User interface d Suction air e Discharge air f Refrigerant piping + interconnection cable g Drain pipe h Earth wiring i Suction grille and air filter 4.4 Combining units and options INFORMATION Certain options might not be available in your country. -
Page 19: Preparation
Preparation 5 Preparation 5.1 Overview: Preparation This chapter describes what you have to do and know before going on-site. It contains information about: ▪ Preparing the installation site ▪ Preparing the refrigerant piping ▪ Preparing the electrical wiring 5.2 Preparing the installation site Choose an installation location with sufficient space for carrying the unit in and out of the site. - Page 20 Preparation NOTICE The equipment described in this manual may cause electronic noise generated from radio-frequency energy. The equipment complies to specifications that are designed to provide reasonable protection against such interference. However, there is no guarantee that interference will not occur in a particular installation. It is therefore recommended to install the equipment and electric wires in such a way that they keep a proper distance from stereo equipment, personal computers, etc.
- Page 21 Preparation ▪ Ceiling insulation. When conditions in the ceiling exceed 30°C and a relative humidity of 80%, or when fresh air is inducted into the ceiling, then additional insulation is required (minimum 10 mm thickness, polyethylene foam). ▪ Spacing. Mind the following requirements: ≥1500 ≥2000 ≥4000...
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Page 22: Preparing Refrigerant Piping
Preparation 5.3 Preparing refrigerant piping 5.3.1 Refrigerant piping requirements INFORMATION Also read the precautions and requirements in the "1 General safety precautions" [ 5]. NOTICE The refrigerant R410A requires strict cautions for keeping the system clean, dry and tight. ▪ Clean and dry: foreign materials (including mineral oils or moisture) should be prevented from getting mixed into the system. -
Page 23: Refrigerant Piping Insulation
Preparation 5.3.2 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 Ambient temperature Humidity Minimum thickness ≤30°C 75% to 80% RH 15 mm... -
Page 24: Installation
Installation 6 Installation 6.1 Overview: Installation This chapter describes what you have to do and know on-site to install the system. Typical workflow Installation typically consists of the following stages: Mounting the outdoor unit. Mounting the indoor unit (+ decoration panel). Connecting the refrigerant piping. -
Page 25: Guidelines When Installing The Indoor Unit
Installation 6.2.2 Guidelines when installing the indoor unit INFORMATION Optional equipment. When installing optional equipment, also read the installation manual of the optional equipment. Depending on the field conditions, it might be easier to install the optional equipment first. ▪ In case of installation with a fresh air intake kit. - Page 26 Installation a Centre of the unit b Centre of the ceiling opening c Paper pattern for installation (upper part of the packing) d Screws (accessories) ▪ Ceiling opening and unit: Make sure the ceiling opening is within the following limits: Minimum: 860 mm to be able to fit the unit.
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Page 27: Guidelines When Installing The Drain Piping
Installation A In case of installation with standard decoration panel B In case of installation with fresh air intake kit C In case of installation with self-cleaning decoration panel D In case of installation with design decoration panel a Suspended ceiling b Installation guide (accessory) c Unit ▪... - Page 28 Installation 1~1.5 m a Hanging bar O Allowed X Not allowed ▪ Rising piping. If necessary to make the slope possible, you can install rising piping. Drain hose inclination: 0~75 mm to avoid stress on the piping and to avoid air bubbles.
- Page 29 Installation 5 Wind the large sealing pad (= insulation) around the metal clamp and drain hose, and fix it with tie wraps. 6 Connect the drain piping to the drain hose. ≤4 mm A-A' a Drain pipe connection (attached to the unit) b Drain hose (accessory) c Metal clamp (accessory) d Large sealing pad (accessory)
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Page 30: Connecting The Refrigerant Piping
Installation a Plastic watering can b Service drain outlet (with rubber plug). Use this outlet to drain water from the drain pan. c Drain pump location d Drain pipe connection e Drain pipe 5 Turn OFF the power. 6 Disconnect the electrical wiring. ▪... -
Page 31: Precautions When Connecting The Refrigerant Piping
Installation 6.3.2 Precautions when connecting the refrigerant piping INFORMATION Also read the precautions and requirements in the following chapters: ▪ General safety precautions ▪ Preparation DANGER: RISK OF BURNING/SCALDING CAUTION ▪ Do NOT use mineral oil on flared part. ▪ Do NOT reuse piping from previous installations. -
Page 32: Pipe Bending Guidelines
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. ▪ ALWAYS use a spanner and torque wrench together to tighten the flare nut when connecting the piping. -
Page 33: To Connect The Refrigerant Piping To The Indoor Unit
Installation Flare tool for R410A 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 34: Connecting The Electrical Wiring
Installation NOTICE Make sure to insulate all refrigerant piping. Any exposed piping might cause condensation. 6.4 Connecting the electrical wiring 6.4.1 About connecting the electrical wiring Typical workflow Connecting the electrical wiring typically consists of the following stages: Making sure the power supply system complies with the electrical specifications of the units. -
Page 35: Specifications Of Standard Wiring Components
Installation a Stranded conductor wire b 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... -
Page 36: To Connect The Electrical Wiring To The Indoor Unit
Installation Component Class 20~40 Recommended field fuse 6 A Residual current device Must comply with applicable legislation MCA=Minimum circuit ampacity. Stated values are maximum values (see electrical data of indoor unit for exact values). 6.4.5 To connect the electrical wiring to the indoor unit NOTICE ▪... - Page 37 Installation Wiring example a Power supply b Main switch c Power supply wiring d Transmission wiring e Switch f Circuit breaker g BS unit (only REYQ) h Indoor unit i User interface Complete system example ▪ When 1 user interface controls 1 indoor unit. TO IN/D TO OUT/D L N P...
- Page 38 Installation Control box OUT/D IN/D TO IN/D TO OUT/D a Outdoor unit b Indoor unit c User interface d Most downstream indoor unit e For use with 2 user interfaces f BS unit 10~15 70~90 (mm) a Service cover (with wiring diagram on the back) b Opening for cables c Connection of power supply (including earth) d Cable tie...
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Page 39: Configuration
Configuration 7 Configuration 7.1 Field setting Make the following field settings so that they correspond with the actual installation setup and with the needs of the user: ▪ Ceiling height ▪ Design decoration panel (if applicable) ▪ Air flow direction ▪... - Page 40 Configuration a All-round air flow b 4-way air flow (all air outlets open, 2 corners closed) (optional blocking pad kit required) c 3-way air flow (1 air outlet closed, all corners open) (optional blocking pad kit required) Setting: Air volume when thermostat control is OFF This setting must correspond with the needs of the user.
- Page 41 Configuration Individual setting in a simultaneous operation system We recommend using the optional user interface to set the slave unit. Perform the following steps: 2 Change the second code number to 02 to perform individual setting on the slave unit. If you want to set the slave unit as…...
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Page 42: Commissioning
Commissioning 8 Commissioning 8.1 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. 8.2 Precautions when commissioning INFORMATION During the first running period of the unit, the required power may be higher than... -
Page 43: Checklist Before Commissioning
Commissioning 8.3 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. You read the complete installation instructions, as described in the installer reference guide. - Page 44 Commissioning Action Turn ON power for at least 6 hours before starting operation to protect the compressor. On the user interface, set the unit to cooling operation mode. 2 Start the test run Action Result Go to the home menu. Cool Set to °C Press at least 4 seconds.
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Page 45: Error Codes When Performing A Test Run
Commissioning 5 Stop the test run. Action Result Press at least 4 seconds. The Service Settings menu is displayed. Select Test Operation. Service Settings Test Operation Maintenance Contact Field Settings Demand Min Setpoints Differential Group Address Return Setting Press. The unit returns to normal operation, and the home menu is displayed. -
Page 46: Hand-Over To The User
Hand-over to the user 9 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 47: Disposal
Disposal 10 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. FXFQ20~125BVEB Installer and user reference guide VRV system air conditioner... -
Page 48: Technical Data
Technical data 11 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). 11.1 Piping diagram: Indoor unit... - Page 49 Technical data Symbol Colour Symbol Colour Blue Pink Brown PRP, PPL Purple Green Grey White Yellow Symbol Meaning Printed circuit board Pushbutton ON/OFF, operation switch BZ, H*O Buzzer Capacitor 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...
- Page 50 Technical data Symbol Meaning 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 Q*DI, KLM Earth leak circuit breaker Overload protector Thermo switch Residual current device Resistor...
- Page 51 Technical data Symbol Meaning Electronic expansion valve coil Y*R, Y*S Reversing solenoid valve coil Ferrite core ZF, Z*F Noise filter FXFQ20~125BVEB Installer and user reference guide VRV system air conditioner 4P561452-1B – 2021.07...
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Page 52: For The User
For the user FXFQ20~125BVEB Installer and user reference guide VRV system air conditioner 4P561452-1B – 2021.07... -
Page 53: About The System
About the system 12 About the system The indoor unit of this VRV system air conditioner can be used for heating/cooling applications. NOTICE Do NOT use the system for other purposes. In order to avoid any quality deterioration, do NOT use the unit for cooling precision instruments, food, plants, animals, or works of art. -
Page 54: Information Requirements For Fan Coil Units
Heating capacity rated,h Total electric power input elec Sound power level (per speed setting, if applicable) Contact details: DAIKIN INDUSTRIES CZECH REPUBLIC s.r.o. U Nové Hospody 1/1155, 301 00 Plzeň Skvrňany, Czech Republic FXFQ20 0.038 FXFQ25 0.038 FXFQ32 0.038 FXFQ40 0.038... -
Page 55: User Interface
User interface 13 User interface CAUTION ▪ NEVER touch the internal parts of the controller. ▪ Do NOT remove the front panel. Some parts inside are dangerous to touch and appliance problems may happen. For checking and adjusting the internal parts, contact your dealer. -
Page 56: Before Operation
Before operation 14 Before operation WARNING This unit contains electrical and hot parts. WARNING Before operating the unit, be sure the installation has been carried out correctly by an installer. CAUTION It is unhealthy to expose your body to the air flow for a long time. CAUTION To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the system. -
Page 57: Operation
Operation 15 Operation 15.1 Operating the system 15.1.1 About operating the system ▪ To protect the unit, turn on the main power switch 6 hours before operation. ▪ If the main power supply is turned off during operation, operation will restart automatically after the power turns back on again. -
Page 58: To Operate The System
Operation 15.1.4 To operate the system 1 Press the operation mode selector button on the user interface several times and select the operation mode of your choice. Cooling operation Heating operation Fan only operation 2 Press the ON/OFF button on the user interface. Result: The operation lamp lights up and the system starts operating. -
Page 59: Active Circulation Airflow
Operation Cooling Heating ▪ When the room temperature is lower ▪ When starting operation. than the set temperature. ▪ When the room temperature is higher than the set temperature. ▪ At defrost operation. ▪ When operating continuously at horizontal air flow direction. ▪... - Page 60 Operation Choose enable and confirm. Circulation Air ow Enable/Disable Enable Return Return Setting Setting Confirm setting. Circulation Air ow Save the settings? Return Setting Return Setting Go to the home screen. Cool Set to °C Check if Air Volume/direction is set Air Volume/direction Air Volume Direction...
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Page 61: Energy Saving And Optimum Operation
Energy saving and optimum operation 16 Energy saving and optimum operation Observe the following precautions to ensure the system operates properly. ▪ Adjust the air outlet properly and avoid direct air flow to room inhabitants. ▪ Adjust the room temperature properly for a comfortable environment. Avoid excessive heating or cooling. -
Page 62: Maintenance And Service
Maintenance and service 17 Maintenance and service 17.1 Precautions for maintenance and service CAUTION: Pay attention to the fan! It is dangerous to inspect the unit while the fan is running. Be sure to turn off the main switch before executing any maintenance task. CAUTION Do NOT insert fingers, rods or other objects into the air inlet or outlet. -
Page 63: To Clean The Air Filter
Maintenance and service 17.2.1 To clean the air filter When to clean the air filter: ▪ Rule of thumb: Clean every 6 months. If the air in the room is extremely contaminated, increase the cleaning frequency. ▪ Depending on the settings, the user interface can display the TIME TO CLEAN AIR FILTER notification. -
Page 64: To Clean The Suction Grille
Maintenance and service 4 Dry the air filter in the shadow. 5 Reattach the air filter and close the suction grille. 6 Turn ON the power. 7 Press the FILTER SIGN RESET button. Result: The TIME TO CLEAN AIR FILTER notification disappears from the user interface. -
Page 65: To Clean The Air Outlet And Outside Panels
Maintenance and service Design panel: 3 Remove the air filter. 4 Clean the suction grille. Wash with a soft bristle brush, and water or neutral detergent. If the suction grille is very dirty, use a typical kitchen cleaner, leave it on for 10 min, then wash it with water. 5 Reattach the air filter (step 3 in reverse order). -
Page 66: Maintenance Before A Long Stop Period
Maintenance and service 17.4 Maintenance before a long stop period E.g., at the end of the season. ▪ Let the indoor units run in fan only operation for about half a day in order to dry the interior of the units. Refer to "15.1.2 ... -
Page 67: Recommended Maintenance And Inspection Cycles
Maintenance and service of your units, we recommend to enter into a maintenance and inspection contract on top of normal maintenance activities. Our network of dealers has access to a permanent stock of essential components in order to keep your unit in operation as long as possible. -
Page 68: Shortened Maintenance And Replacement Cycles
Maintenance and service NOTICE ▪ The table indicates main components. Refer to your maintenance and inspection contract for more details. ▪ The table indicates recommended intervals of maintenance cycles. However, in order to keep the unit operational as long as possible, maintenance work may be required sooner. -
Page 69: Troubleshooting
Troubleshooting 18 Troubleshooting If one of the following malfunctions occur, take the measures shown below and contact your dealer. WARNING Stop operation and shut off the power if anything unusual occurs (burning smells etc.). Leaving the unit running under such circumstances may cause breakage, electric shock or fire. -
Page 70: Symptoms That Are Not System Malfunctions
Troubleshooting If after checking all above items, it is impossible to fix the problem yourself, contact your installer and state the symptoms, the complete model name of the unit (with manufacturing number if possible) and the installation date (possibly listed on the warranty card). -
Page 71: Symptom: The User Interface Reads "U4" Or "U5" And Stops, But Then Restarts After A Few Minutes
Troubleshooting 18.1.6 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes This is because the user interface is intercepting noise from electric appliances other than the air conditioner. The noise prevents communication between the units, causing them to stop. -
Page 72: Symptom: The Compressor In The Outdoor Unit Does Not Stop After A Short Heating Operation
Troubleshooting 18.1.14 Symptom: The compressor in the outdoor unit does not stop after a short heating operation This is to prevent refrigerant from remaining in the compressor. The unit will stop after 5 to 10 minutes. FXFQ20~125BVEB Installer and user reference guide VRV system air conditioner 4P561452-1B –... - Page 73 Relocation 19 Relocation Contact your dealer for removing and reinstalling the total unit. Moving units requires technical expertise. FXFQ20~125BVEB Installer and user reference guide VRV system air conditioner 4P561452-1B – 2021.07...
- Page 74 Disposal 20 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. FXFQ20~125BVEB Installer and user reference guide VRV system air conditioner...
- 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 4P561452-1B 2021.07 Verantwortung für Energie und Umwelt...
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