Daikin VRV system FXMQ200AXVMB User guide

Installer and user reference guide
VRV system air conditioner
FXMQ200AXVMB
FXMQ250AXVMB

Table of contents
Installer and user reference guide
2
FXMQ-A
VRV system air conditioner
4P701548-1 – 2022.07
Table of contents
1 About the documentation 4
1.1 About this document ...................................................................................................................................................... 4
1.2 Meaning of warnings and symbols................................................................................................................................. 4
2 General safety precautions 6
2.1 For the installer............................................................................................................................................................... 6
2.1.1 General ........................................................................................................................................................... 6
2.1.2 Installation site ............................................................................................................................................... 7
2.1.3 Refrigerant — in case of R410A or R32.......................................................................................................... 7
2.1.4 Electrical ......................................................................................................................................................... 9
3 Specific installer safety instructions 11
For the user 13
4 User safety instructions 14
4.1 General............................................................................................................................................................................ 14
4.2 Instructions for safe operation ....................................................................................................................................... 15
5 About the system 19
5.1 System layout.................................................................................................................................................................. 19
5.2 Information requirements for fan coil units................................................................................................................... 20
6 User interface 21
7 Before operation 22
8 Operation 23
8.1 Operation range.............................................................................................................................................................. 23
8.2 About operation modes.................................................................................................................................................. 23
8.2.1 Basic operation modes................................................................................................................................... 23
8.2.2 Special heating operation modes................................................................................................................... 24
8.3 To operate the system.................................................................................................................................................... 24
9 Energy saving and optimum operation 25
10 Maintenance and service 26
10.1 Precautions for maintenance and service...................................................................................................................... 26
10.2 Cleaning the air filter and air outlet ............................................................................................................................... 27
10.2.1 To clean the air filter ...................................................................................................................................... 27
10.2.2 To clean the air outlet .................................................................................................................................... 27
10.3 Maintenance before a long stop period......................................................................................................................... 28
10.4 Maintenance after a long stop period............................................................................................................................ 28
10.5 About the refrigerant...................................................................................................................................................... 28
11 Troubleshooting 30
11.1 Symptoms that are NOT system malfunctions............................................................................................................... 31
11.1.1 Symptom: The system does not operate....................................................................................................... 31
11.1.2 Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 32
11.1.3 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 32
11.1.4 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.......... 32
11.1.5 Symptom: Noise of air conditioners (Indoor unit)......................................................................................... 32
11.1.6 Symptom: Noise of air conditioners (Indoor unit, outdoor unit) .................................................................. 32
11.1.7 Symptom: Dust comes out of the unit........................................................................................................... 32
11.1.8 Symptom: The units can give off odours ....................................................................................................... 32
12 Relocation 33
13 Disposal 34
For the installer 35
14 About the box 36
14.1 Indoor unit ...................................................................................................................................................................... 36
14.1.1 To unpack and handle the unit ...................................................................................................................... 36
14.1.2 To remove the accessories from the indoor unit .......................................................................................... 36

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15 About the units and options 38
15.1 Identification ................................................................................................................................................................... 38
15.1.1 Identification label: Indoor unit ..................................................................................................................... 38
15.2 About the indoor unit ..................................................................................................................................................... 38
15.3 System layout.................................................................................................................................................................. 38
15.4 Combining units and options.......................................................................................................................................... 39
15.4.1 Possible options for the indoor unit............................................................................................................... 39
16 Unit installation 40
16.1 Preparing the installation site......................................................................................................................................... 40
16.1.1 Installation site requirements of the indoor unit .......................................................................................... 40
16.2 Mounting the indoor unit ............................................................................................................................................... 42
16.2.1 Guidelines when installing the indoor unit.................................................................................................... 42
16.2.2 Guidelines when installing the ducting.......................................................................................................... 44
16.2.3 Guidelines when installing the drain piping................................................................................................... 45
17 Piping installation 49
17.1 Preparing refrigerant piping ........................................................................................................................................... 49
17.1.1 Refrigerant piping requirements.................................................................................................................... 49
17.1.2 Refrigerant piping insulation.......................................................................................................................... 50
17.2 Connecting the refrigerant piping .................................................................................................................................. 50
17.2.1 About connecting the refrigerant piping ....................................................................................................... 50
17.2.2 Precautions when connecting the refrigerant piping.................................................................................... 51
17.2.3 Guidelines when connecting the liquid piping............................................................................................... 52
17.2.4 Guidelines when connecting the gas piping .................................................................................................. 53
17.2.5 To connect the refrigerant piping to the indoor unit .................................................................................... 54
18 Electrical installation 56
18.1 About connecting the electrical wiring .......................................................................................................................... 56
18.1.1 Precautions when connecting the electrical wiring....................................................................................... 56
18.1.2 Guidelines when connecting the electrical wiring......................................................................................... 57
18.1.3 Specifications of standard wiring components.............................................................................................. 58
18.2 To connect the electrical wiring to the indoor unit ....................................................................................................... 59
19 Commissioning 62
19.1 Overview: Commissioning .............................................................................................................................................. 62
19.2 Precautions when commissioning .................................................................................................................................. 62
19.3 Checklist before commissioning ..................................................................................................................................... 63
19.4 To perform a test run...................................................................................................................................................... 64
20 Configuration 65
20.1 Field setting..................................................................................................................................................................... 65
21 Hand-over to the user 70
22 Troubleshooting 71
22.1 Solving problems based on error codes ......................................................................................................................... 71
22.1.1 Error codes: Overview .................................................................................................................................... 71
23 Disposal 72
24 Technical data 73
24.1 Wiring diagram................................................................................................................................................................ 73
24.1.1 Unified wiring diagram legend ....................................................................................................................... 73
25 Glossary 76

1 | About the documentation
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1 About the documentation
1.1 About this document
INFORMATION
Make sure that the user has the printed documentation and ask him/her to keep it
for future reference.
Target audience
Authorised installers + end users
INFORMATION
This appliance is intended to be used by expert or trained users in shops, in light
industry and on farms, or for commercial use by lay persons.
Documentation set
This document is part of a documentation set. The complete set consists of:
▪General safety precautions:
-Safety instructions that you must read before installing
-Format: Paper (in the box of the indoor unit)
▪Indoor unit installation and operation manual:
-Installation and operation instructions
-Format: Paper (in the box of the indoor unit)
▪Installer and user reference guide:
-Preparation of the installation, good practices, reference data,…
-Detailed step-by-step instructions and background information for basic and
advanced usage
-Format: Digital files on https://www.daikin.eu. Use the search function to
find your model.
Latest revisions of the supplied documentation may be available on the regional
Daikin website or via your dealer.
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).
1.2 Meaning of warnings and symbols
DANGER
Indicates a situation that results in death or serious injury.

1 | About the documentation
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DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
DANGER: RISK OF BURNING/SCALDING
Indicates a situation that could result in burning/scalding because of extreme hot or
cold temperatures.
DANGER: RISK OF EXPLOSION
Indicates a situation that could result in explosion.
WARNING
Indicates a situation that could result in death or serious injury.
WARNING: FLAMMABLE MATERIAL
CAUTION
Indicates a situation that could result in minor or moderate injury.
NOTICE
Indicates a situation that could result in equipment or property damage.
INFORMATION
Indicates useful tips or additional information.
Symbols used on the unit:
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.
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".
Indicates a table title or a reference to it.
Example: " 1–3 Table title" means "Table 3 in chapter 1".

2 | General safety precautions
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2 General safety precautions
2.1 For the installer
2.1.1 General
DANGER: RISK OF BURNING/SCALDING
▪Do NOT touch the refrigerant piping, water piping or internal parts during and
immediately after operation. It could be too hot or too cold. Give it time to return
to normal temperature. If you MUST touch it, wear protective gloves.
▪Do NOT touch any accidental leaking refrigerant.
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.
WARNING
Make sure installation, testing and applied materials comply with applicable
legislation (on top of the instructions described in the Daikin documentation).
WARNING
Tear apart and throw away plastic packaging bags so that nobody, especially
children, can play with them. Possible risk: suffocation.
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
Wear adequate personal protective equipment (protective gloves, safety glasses,…)
when installing, maintaining or servicing the system.
CAUTION
Do NOT touch the air inlet or aluminium fins of the unit.
CAUTION
▪Do NOT place any objects or equipment on top of the unit.
▪Do NOT sit, climb or stand on the unit.
If you are NOT sure how to install or operate the unit, contact your dealer.
In accordance with the applicable legislation, it might be necessary to provide a
logbook with the product containing at least: information on maintenance, repair
work, results of tests, stand-by periods,…
Also, at least, following information MUST be provided at an accessible place at the
product:

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▪Instructions for shutting down the system in case of an emergency
▪Name and address of fire department, police and hospital
▪Name, address and day and night telephone numbers for obtaining service
In Europe, EN378 provides the necessary guidance for this logbook.
2.1.2 Installation site
▪Provide sufficient space around the unit for servicing and air circulation.
▪Make sure the installation site withstands the weight and vibration of the unit.
▪Make sure the area is well ventilated. Do NOT block any ventilation openings.
▪Make sure the unit is level.
Do NOT install the unit in the following places:
▪In potentially explosive atmospheres.
▪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.
▪In places where corrosive gas (example: sulphurous acid gas) is produced.
Corrosion of copper pipes or soldered parts may cause the refrigerant to leak.
2.1.3 Refrigerant — in case of R410A or R32
If applicable. See the installation manual or installer reference guide of your
application for more information.
DANGER: RISK OF EXPLOSION
Pump down – Refrigerant leakage. If you want to pump down the system, and there
is a leak in the refrigerant circuit:
▪Do NOT use the unit's automatic pump down function, with which you can collect
all refrigerant from the system into the outdoor unit. Possible consequence: Self-
combustion and explosion of the compressor because of air going into the
operating compressor.
▪Use a separate recovery system so that the unit's compressor does NOT have to
operate.
WARNING
During tests, NEVER pressurise the product with a pressure higher than the
maximum allowable pressure (as indicated on the nameplate of the unit).
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.

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WARNING
ALWAYS recover the refrigerant. Do NOT release them directly into the environment.
Use a vacuum pump to evacuate the installation.
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.
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.
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.
NOTICE
After all the piping has been connected, make sure there is no gas leak. Use nitrogen
to perform a gas leak detection.
▪In case recharge is required, see the nameplate of the unit. It states the type of
refrigerant and necessary amount.
▪The unit is factory charged with refrigerant and depending on pipe sizes and pipe
lengths some systems require additional charging of refrigerant.
▪ONLY use tools exclusively for the refrigerant type used in the system, this to
ensure pressure resistance and prevent foreign materials from entering into the
system.
▪Charge the liquid refrigerant as follows:
If Then
A siphon tube is present
(i.e., the cylinder is marked with "Liquid
filling siphon attached")
Charge with the cylinder upright.
A siphon tube is NOT present Charge with the cylinder upside down.
▪Open refrigerant cylinders slowly.

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▪Charge the refrigerant in liquid form. Adding it in gas form may prevent normal
operation.
CAUTION
When the refrigerant charging procedure is done or when pausing, close the valve of
the refrigerant tank immediately. If the valve is NOT closed immediately, remaining
pressure might charge additional refrigerant. Possible consequence: Incorrect
refrigerant amount.
2.1.4 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. 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.
▪Do NOT touch electrical components with wet hands.
▪Do NOT leave the unit unattended when the service cover is removed.
WARNING
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.
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. Make sure no external pressure is applied to the
terminal connections.
▪Make sure to install earth wiring. Do NOT earth the unit to a utility pipe, surge
absorber, or telephone earth. Incomplete earth may cause electrical shock.
▪Make sure to use a dedicated power circuit. NEVER use a power supply shared by
another appliance.
▪Make sure to install the required fuses or circuit breakers.
▪Make sure to install an earth leakage protector. Failure to do so may cause
electrical shock or fire.
▪When installing the earth leakage protector, make sure it is compatible with the
inverter (resistant to high frequency electric noise) to avoid unnecessary opening
of the earth leakage protector.
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.

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CAUTION
▪When connecting the power supply: connect the earth cable first, before making
the current-carrying connections.
▪When disconnecting the power supply: disconnect the current-carrying cables
first, before separating the earth connection.
▪The length of the conductors between the power supply stress relief and the
terminal block itself MUST be as such that the current-carrying wires are
tautened before the earth wire is in case the power supply is pulled loose from
the stress relief.
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.
▪For wiring, use the designated power wire and connect firmly, then secure to
prevent outside pressure being exerted on the terminal board.
▪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.
Install power cables at least 1 meter away from televisions or radios to prevent
interference. Depending on the radio waves, a distance of 1 meter may NOT be
sufficient.
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. Running the product in reversed phase can break the
compressor and other parts.

3 | Specific installer safety instructions
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3 Specific installer safety instructions
Always observe the following safety instructions and regulations.
Unit installation (see "16Unit installation"[ 4
40])
CAUTION
Appliance NOT accessible to the general public, install it in a secured area, protected
from easy access.
This unit, both indoor and outdoor, is suitable for installation in a commercial and
light industrial environment.
CAUTION
This equipment is NOT intended for use in residential locations and will NOT
guarantee to provide adequate protection to radio reception in such locations.
Duct installation (see "16.2.2Guidelines when installing the ducting"[ 4
44])
CAUTION
In case of installation WITHOUT the duct on inlet side, make sure to install the air
filter. For more information refer to the option list of the indoor unit.
CAUTION
▪Make sure the installation of the duct does NOT exceed the setting range of the
external static pressure for the unit. Refer to the technical datasheet of your
model for the setting range.
▪Make sure to install the canvas duct so vibrations are NOT transmitted to the
duct or ceiling. Use a sound-absorbing material (insulation material) for the lining
of the duct and apply vibration insulation rubber to the hanging bolts.
▪When welding, make sure NOT to spatter onto the drain pan or the air filter.
▪If the metal duct passes through a metal lath, wire lath or metal plate of the
wooden structure, separate the duct and wall electrically.
▪Install the outlet grille in a position where the airflow will not come into direct
contact with people.
▪Do NOT use booster fans in the duct. Use the function to adjust the fan rate
setting automatically (see "20Configuration"[465]).
Electrical installation (see "18Electrical installation"[ 4
56])
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
▪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.

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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.
▪Install the required fuses or circuit breakers.
▪Secure the electrical wiring with cable ties so that the cables do NOT come in
contact with sharp edges or piping, particularly on the high-pressure side.
▪Do NOT use taped wires, stranded conductor wires, extension cords, or
connections from a star system. They can cause overheating, electrical shock or
fire.
▪Do NOT install a phase advancing capacitor, because this unit is equipped with an
inverter. A phase advancing capacitor will reduce performance and may cause
accidents.
WARNING
Use an all-pole disconnection type breaker with at least 3mm between the contact
point gaps that provides full disconnection under overvoltage category III.
WARNING
If the supply cord is damaged, it MUST be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
WARNING
Prevent hazards due to inadvertent resetting of the thermal cut-out: power to this
appliance MUST NOT be supplied through an external switching device, such as a
timer, or connected to a circuit that is regularly turned ON and OFF by the utility.

For the user
Installer and user reference guide
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For the user

4 | User safety instructions
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4 User safety instructions
Always observe the following safety instructions and regulations.
4.1 General
WARNING
If you are NOT sure how to operate the unit, contact your
installer.
WARNING
This appliance can be used by children aged from 8 years
and above and persons with reduced physical, sensory or
mental capabilities or lack of experience and knowledge if
they have been given supervision or instruction concerning
use of the appliance in a safe way and understand the
hazards involved.
Children SHALL NOT play with the appliance.
Cleaning and user maintenance SHALL NOT be made by
children without supervision.
WARNING
To prevent electrical shocks or fire:
▪Do NOT rinse the unit.
▪Do NOT operate the unit with wet hands.
▪Do NOT place any objects containing water on the unit.
CAUTION
▪Do NOT place any objects or equipment on top of the
unit.
▪Do NOT sit, climb or stand on the unit.

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▪Units are marked with the following symbol:
This means that electrical and electronic products may NOT be mixed with
unsorted household waste. Do NOT try to dismantle the system yourself:
dismantling the system, treatment of the refrigerant, of oil and of other parts
MUST be done by an authorised installer and MUST comply with applicable
legislation.
Units MUST be treated at a specialised treatment facility for reuse, recycling and
recovery. By ensuring this product is disposed of correctly, you will help to
prevent potential negative consequences for the environment and human
health. For more information, contact your installer or local authority.
▪Batteries are marked with the following symbol:
This means that the batteries may NOT be mixed with unsorted household
waste. If a chemical symbol is printed beneath the symbol, this chemical symbol
means that the battery contains a heavy metal above a certain concentration.
Possible chemical symbols are: Pb: lead (>0.004%).
Waste batteries MUST be treated at a specialised treatment facility for reuse. By
ensuring waste batteries are disposed of correctly, you will help to prevent
potential negative consequences for the environment and human health.
4.2 Instructions for safe operation
WARNING
▪Do NOT modify, disassemble, remove, reinstall or repair
the unit yourself as incorrect dismantling or installation
may cause an electrical shock or fire. Contact your
dealer.
▪In case of accidental refrigerant leaks, make sure there
are no naked flames. The refrigerant itself is entirely
safe, non-toxic and non-combustible, but it will generate
toxic gas when it accidentally leaks into a room where
combustion air from fan heaters, gas cookers, etc. is
present. ALWAYS have qualified service personnel
confirm that the point of leakage has been repaired or
corrected before resuming operation.

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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.
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.
CAUTION
Do NOT operate the system when using a room
fumigation-type insecticide. Chemicals could collect in the
unit, and endanger the health of people who are
hypersensitive to chemicals.
CAUTION
NEVER expose little children, plants or animals directly to
the airflow.
WARNING
Do NOT place a flammable spray bottle near the air
conditioner and do NOT use sprays near the unit. Doing so
may result in a fire.

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Maintenance and service (see "10Maintenance and service"[ 4
26])
CAUTION: Pay attention to the fan!
It is dangerous to inspect the unit while the fan is running.
Make 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. When the fan is rotating at high speed, it
will cause injury.
WARNING
NEVER replace a fuse with a fuse of a wrong ampere
ratings or other wires when a fuse blows out. Use of wire
or copper wire may cause the unit to break down or cause
a fire.
CAUTION
After a long use, check the unit stand and fitting for
damage. If damaged, the unit may fall and result in injury.
CAUTION
Before accessing terminal devices, make sure to interrupt
all power supply.
DANGER: RISK OF ELECTROCUTION
To clean the air conditioner or air filter, be sure to stop
operation and turn all power supplies OFF. Otherwise, an
electrical shock and injury may result.
WARNING
Be careful with ladders when working in high places.
DANGER: RISK OF ELECTROCUTION
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. The
voltage MUST be less than 50VDC before you can touch
electrical components. For the location of the terminals,
see the warning label for persons performing service and
maintenance.

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CAUTION
Turn off the unit before cleaning the air outlet.
WARNING
Do NOT let the indoor unit get wet. Possible consequence:
Electrical shock or fire.
About the refrigerant (see "10.5About the refrigerant"[ 4
28])
WARNING
▪The refrigerant in the system is safe and normally does
NOT leak. If the refrigerant leaks in the room, contact
with a fire of a burner, a heater or a cooker may result in
a harmful gas.
▪Turn OFF any combustible heating devices, ventilate the
room and contact the dealer where you purchased the
unit.
▪Do NOT use the system until a service person confirms
that the portion where the refrigerant leaks is repaired.
Troubleshooting (see "11Troubleshooting"[ 4
30])
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, electrical shock or fire. Contact your
dealer.

5 | About the system
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5 About the system
WARNING
▪Do NOT modify, disassemble, remove, reinstall or repair the unit yourself as
incorrect dismantling or installation may cause an electrical shock or fire. Contact
your dealer.
▪In case of accidental refrigerant leaks, make sure there are no naked flames. The
refrigerant itself is entirely safe, non-toxic and non-combustible, but it will
generate toxic gas when it accidentally leaks into a room where combustion air
from fan heaters, gas cookers, etc. is present. ALWAYS have qualified service
personnel confirm that the point of leakage has been repaired or corrected
before resuming operation.
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.
NOTICE
For future modifications or expansions of your system:
A full overview of allowable combinations (for future system extensions) is available
in technical engineering data and should be consulted. Contact your installer to
receive more information and professional advice.
5.1 System layout
INFORMATION
The following figure is an example and may NOT completely match your system
layout
+
-
+
-
a
b
c
d d
c
aOutdoor unit
bMulti BS unit
cIndoor unit
dRemote controller (user interface)

5 | About the system
Installer and user reference guide
20
FXMQ-A
VRV system air conditioner
4P701548-1 – 2022.07
5.2 Information requirements for fan coil units
Item Symbol Value Unit
Cooling capacity (sensible) Prated,c A kW
Cooling capacity (latent) Prated,c B kW
Heating capacity Prated,h C kW
Total electric power input Pelec D kW
Sound power level (cooling) LWA E dB(A)
Sound power level (heating) LWA F dB(A)
Contact details:
DAIKIN INDUSTRIES CZECH REPUBLIC s.r.o. U Nové Hospody 1/1155, 301 00 Plzeň
Skvrňany, Czech Republic
A B C D E F
FXMQ200 17 5.4 25 0.540 75 75
FXMQ250 21.1 6.9 31.5 0.650 76 76