Daikin R32 Split Series How to use

Installer reference guide
R32 Split series
3AMXM52N2V1B9
3MXM40N2V1B9
3MXM52N2V1B9
3MXM68N2V1B9
4MXM68N2V1B9
4MXM80N2V1B9
5MXM90N2V1B9 3AMXF52A2V1B9
3MXF52A2V1B9
3MXF68A2V1B9

Table of contents
Installer reference guide
2
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1B – 2020.05
Table of contents
1 General safety precautions 4
1.1 About the documentation .............................................................................................................................................. 4
1.1.1 Meaning of warnings and symbols ................................................................................................................ 4
1.2 For the installer............................................................................................................................................................... 5
1.2.1 General ........................................................................................................................................................... 5
1.2.2 Installation site ............................................................................................................................................... 6
1.2.3 Refrigerant...................................................................................................................................................... 10
1.2.4 Brine................................................................................................................................................................ 11
1.2.5 Water .............................................................................................................................................................. 12
1.2.6 Electrical ......................................................................................................................................................... 12
2 About the documentation 15
2.1 About this document ...................................................................................................................................................... 15
2.2 Installer reference guide at a glance .............................................................................................................................. 15
3 About the box 17
3.1 Overview: About the box ................................................................................................................................................ 17
3.2 Outdoor unit ................................................................................................................................................................... 17
3.2.1 To unpack the outdoor unit ........................................................................................................................... 17
3.2.2 To remove the accessories from the outdoor unit........................................................................................ 18
4 About the units and options 20
4.1 Overview: About the units and options.......................................................................................................................... 20
4.2 Identification ................................................................................................................................................................... 20
4.2.1 Identification label: Outdoor unit .................................................................................................................. 20
5 Preparation 21
5.1 Overview: Preparation.................................................................................................................................................... 21
5.2 Preparing the installation site......................................................................................................................................... 21
5.2.1 Installation site requirements of the outdoor unit........................................................................................ 22
5.2.2 Additional installation site requirements of the outdoor unit in cold climates............................................ 24
5.2.3 Refrigerant piping length and height difference ........................................................................................... 25
5.3 Preparing refrigerant piping ........................................................................................................................................... 25
5.3.1 Refrigerant piping requirements.................................................................................................................... 25
5.3.2 Refrigerant piping insulation.......................................................................................................................... 26
5.4 Preparing electrical wiring .............................................................................................................................................. 27
5.4.1 About preparing electrical wiring................................................................................................................... 27
6 Installation 28
6.1 Overview: Installation ..................................................................................................................................................... 28
6.2 Opening the unit ............................................................................................................................................................. 28
6.2.1 About opening the unit .................................................................................................................................. 28
6.2.2 To open the outdoor unit............................................................................................................................... 29
6.3 Mounting the outdoor unit............................................................................................................................................. 29
6.3.1 About mounting the outdoor unit ................................................................................................................. 29
6.3.2 Precautions when mounting the outdoor unit.............................................................................................. 29
6.3.3 To provide the installation structure ............................................................................................................. 30
6.3.4 To install the outdoor unit ............................................................................................................................. 30
6.3.5 To provide drainage........................................................................................................................................ 30
6.3.6 To prevent the outdoor unit from falling over .............................................................................................. 31
6.4 Connecting the refrigerant piping .................................................................................................................................. 32
6.4.1 About connecting the refrigerant piping ....................................................................................................... 32
6.4.2 Precautions when connecting the refrigerant piping.................................................................................... 33
6.4.3 Guidelines when connecting the refrigerant piping...................................................................................... 34
6.4.4 Pipe bending guidelines ................................................................................................................................. 34
6.4.5 To flare the pipe end ...................................................................................................................................... 35
6.4.6 Connections between outdoor and indoor unit using reducers................................................................... 35
6.4.7 Using the stop valve and service port............................................................................................................ 38
6.4.8 To connect the refrigerant piping to the outdoor unit ................................................................................. 39
6.5 Checking the refrigerant piping...................................................................................................................................... 40
6.5.1 About checking the refrigerant piping........................................................................................................... 40
6.5.2 Precautions when checking the refrigerant piping........................................................................................ 40
6.5.3 To check for leaks ........................................................................................................................................... 41
6.5.4 To perform vacuum drying............................................................................................................................. 41
6.6 Charging refrigerant........................................................................................................................................................ 42
6.6.1 About charging refrigerant............................................................................................................................. 42

Table of contents
Installer reference guide
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3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1B – 2020.05
6.6.2 Precautions when charging refrigerant ......................................................................................................... 43
6.6.3 About the refrigerant ..................................................................................................................................... 43
6.6.4 To determine the additional refrigerant amount.......................................................................................... 44
6.6.5 To determine the complete recharge amount.............................................................................................. 44
6.6.6 To charge additional refrigerant .................................................................................................................... 44
6.6.7 To fix the fluorinated greenhouse gases label............................................................................................... 45
6.7 Connecting the electrical wiring..................................................................................................................................... 46
6.7.1 About connecting the electrical wiring.......................................................................................................... 46
6.7.2 Precautions when connecting the electrical wiring....................................................................................... 46
6.7.3 Guidelines when connecting the electrical wiring......................................................................................... 47
6.7.4 Specifications of standard wiring components.............................................................................................. 48
6.7.5 To connect the electrical wiring to the outdoor unit .................................................................................... 49
6.8 Finishing the outdoor unit installation ........................................................................................................................... 50
6.8.1 To finish the outdoor unit installation ........................................................................................................... 50
6.8.2 About standby electricity saving function...................................................................................................... 51
6.8.3 About priority room function......................................................................................................................... 51
6.8.4 About night quiet mode ................................................................................................................................. 52
6.8.5 About heat mode lock .................................................................................................................................... 53
6.8.6 About cool mode lock..................................................................................................................................... 53
6.8.7 To close the outdoor unit............................................................................................................................... 53
7 Commissioning 55
7.1 Overview: Commissioning .............................................................................................................................................. 55
7.2 Precautions when commissioning.................................................................................................................................. 55
7.3 Checklist before commissioning..................................................................................................................................... 55
7.4 Checklist during commissioning ..................................................................................................................................... 56
7.5 Trial operation and testing ............................................................................................................................................. 56
7.5.1 About wiring error check................................................................................................................................ 56
7.5.2 To perform a test run ..................................................................................................................................... 57
7.6 Starting up the outdoor unit........................................................................................................................................... 58
7.7 Fault diagnosis using LED on outdoor unit PCB.............................................................................................................. 58
8 Hand-over to the user 60
9 Maintenance and service 61
9.1 Overview: Maintenance and service .............................................................................................................................. 61
9.2 Maintenance safety precautions.................................................................................................................................... 61
9.3 Checklist for yearly maintenance of the outdoor unit................................................................................................... 61
9.4 About the compressor .................................................................................................................................................... 61
10 Troubleshooting 63
10.1 Overview: Troubleshooting ............................................................................................................................................ 63
10.2 Precautions when troubleshooting ................................................................................................................................ 63
10.3 Solving problems based on symptoms........................................................................................................................... 63
10.3.1 Symptom: Indoor units fall, vibrate or make noise ....................................................................................... 63
10.3.2 Symptom: The unit is NOT heating or cooling as expected........................................................................... 64
10.3.3 Symptom: Water leakage............................................................................................................................... 64
10.3.4 Symptom: Electrical leakage .......................................................................................................................... 64
10.3.5 Symptom: Priority room setting does NOT function ..................................................................................... 64
10.3.6 Symptom: Unit does NOT function or burn damage..................................................................................... 64
11 Disposal 65
11.1 Overview: Disposal.......................................................................................................................................................... 65
11.2 To pump down ................................................................................................................................................................ 65
11.3 To start and stop forced cooling..................................................................................................................................... 66
12 Technical data 68
12.1 Wiring diagram................................................................................................................................................................ 68
12.1.1 Unified wiring diagram legend ....................................................................................................................... 68
12.2 Piping diagram: Outdoor unit ......................................................................................................................................... 70
13 Glossary 74

1 | General safety precautions
Installer reference guide
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3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1B – 2020.05
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.
1.1.1 Meaning of warnings and symbols
DANGER
Indicates a situation that results in death or serious injury.
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
DANGER: RISK OF BURNING
Indicates a situation that could result in burning 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:

1 | General safety precautions
Installer reference guide
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3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1B – 2020.05
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".
1.2 For the installer
1.2.1 General
If you are NOT sure how to install or operate the unit, contact your dealer.
DANGER: RISK OF BURNING
▪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).
CAUTION
Wear adequate personal protective equipment (protective gloves, safety glasses,…)
when installing, maintaining or servicing the system.
WARNING
Tear apart and throw away plastic packaging bags so that nobody, especially
children, can play with them. Possible risk: suffocation.

1 | General safety precautions
Installer reference guide
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3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1B – 2020.05
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
▪Do NOT place any objects or equipment on top of the unit.
▪Do NOT sit, climb or stand on the unit.
NOTICE
Works executed on the outdoor unit are best done under dry weather conditions to
avoid water ingress.
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:
▪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.
1.2.2 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.
Instructions for equipment using R32 refrigerant
WARNING: MILDLY FLAMMABLE MATERIAL
The refrigerant inside this unit is mildly flammable.

1 | General safety precautions
Installer reference guide
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3(A)MXM+3(A)MXF+4MXM+5MXM
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4P600463-1B – 2020.05
WARNING
▪Do NOT pierce or burn.
▪Do NOT use means to accelerate the defrosting process or to clean the
equipment, other than those recommended by the manufacturer.
▪Be aware that R32 refrigerant does NOT contain an odour.
WARNING
The appliance shall be stored so as to prevent mechanical damage and in a well-
ventilated room without continuously operating ignition sources (example: open
flames, an operating gas appliance or an operating electric heater) and have a room
size as specified below.
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:
▪there are no operating ignition sources (example: open flames, an operating gas
appliance or an operating electric heater) in case the floor area is less than the
minimum floor area A (m²).
▪no auxiliary devices, which may be a potential ignition source, are installed in the
duct work (example: hot surfaces with a temperature exceeding 700°C and
electric switching device);
▪only auxiliary devices approved by the manufacturer are used in the duct work;
▪air inlet AND outlet are connected directly to the same room by ducting. Do NOT
use spaces such as a false ceiling as a duct for the air inlet or outlet.
NOTICE
▪Precautions shall be taken to avoid excessive vibration or pulsation to
refrigeration piping.
▪Protection devices, piping and fittings shall be protected as far as possible against
adverse environmental effects.
▪Provision shall be made for expansion and contraction of long runs of piping.
▪Piping in refrigerating systems shall be designed and installed such as to minimise
the likelihood of hydraulic shock damaging the system.
▪The indoor equipment and pipes shall be securely mounted and guarded such
that accidental rupture of equipment or pipes cannot occur from events such as
moving furniture or reconstruction activities.
CAUTION
Do NOT use potential sources of ignition in searching for or detection of refrigerant
leaks.

1 | General safety precautions
Installer reference guide
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3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1B – 2020.05
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 (m2). This applies to:
▪Indoor units without a refrigerant leakage sensor; in case of indoor units with
refrigerant leakage sensor, consult the installation manual
▪Outdoor units installed or stored indoors (e.g. winter garden, garage, machinery
room)
▪Pipework in unventilated spaces
NOTICE
▪Pipework shall be protected from physical damage.
▪Installation of pipework shall be kept to a minimum.
To determine the minimum floor area
1Determine the total refrigerant charge in the system (= factory refrigerant
charge + additional refrigerant amount charged).
Contains fluorinated greenhouse gases
2
11
1
2
2kg
tCO
2
eq
1000
GWP × kg
=
=
+
kg
=
kg
=
GWP: xxx
R32
2Determine which graph or table to use.
▪For indoor units: Is the unit ceiling-mounted, wall-mounted or floor-
standing?
▪For outdoor units installed or stored indoors, and field piping in unventilated
spaces, this depends on the installation height:
If the installation height is… Then use the graph or table for…
<1.8m Floor-standing units
1.8≤x<2.2m Wall-mounted units
≥2.2m Ceiling-mounted units
3Use the graph or table to determine the minimum floor area.

1 | General safety precautions
Installer reference guide
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4P600463-1B – 2020.05
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
360
370
380
390
400
410
420
430
440
450
460
470
480
490
500
510
520
530
540
550
1.8
2
2.2
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
4.6
4.8
5
5.2
5.4
5.6
5.8
6
6.2
6.4
6.6
6.8
7
7.2
7.4
7.6
7.8
1.843 7.956
8.0
Amin (m2)
Floor-standing unit
(c)
Wall-mounted unit
(b)
Ceiling-mounted unit
(a)
m (kg)
Ceiling-mounted
unit(a)
4.6 13.4 4.6 180
4.8 14.6 4.8 196
5.0 15.8 5.0 213
≤1.842 —
5.2 17.1
≤1.842 —
5.2 230
1.843 3.64
5.4 18.5
1.843 28.9
5.4 248
2.0 3.95
5.6 19.9
2.0 34.0
5.6 267
2.2 4.34
5.8 21.3
2.2 41.2
5.8 286
2.4 4.74
6.0 22.8
2.4 49.0
6.0 306
2.6 5.13
6.2 24.3
2.6 57.5
6.2 327
2.8 5.53
6.4 25.9
2.8 66.7
6.4 349
3.0 5.92
6.6 27.6
3.0 76.6
6.6 371
3.2 6.48
6.8 29.3
3.2 87.2
6.8 394
3.4 7.32
7.0 31.0
3.4 98.4
7.0 417
3.6 8.20
7.2 32.8
3.6 110
7.2 441
3.8 9.14
7.4 34.7
3.8 123
7.4 466
4.0 10.1
7.6 36.6
4.0 136
7.6 492
4.2 11.2
7.8 38.5
4.2 150
7.8 518
4.4 12.3
7.956 40.1
4.4 165
7.956 539
m (kg) Amin (m2)
4.6 20.0
4.8 21.8
5.0 23.6
≤1.842 —
5.2 25.6
1.843 4.45
5.4 27.6
2.0 4.83
5.6 29.7
2.2 5.31
5.8 31.8
2.4 5.79
6.0 34.0
2.6 6.39
6.2 36.4
2.8 7.41
6.4 38.7
3.0 8.51
6.6 41.2
3.2 9.68
6.8 43.7
3.4 10.9
7.0 46.3
3.6 12.3
7.2 49.0
3.8 13.7
7.4 51.8
4.0 15.1
7.6 54.6
4.2 16.7
7.8 57.5
4.4 18.3
7.956 59.9
Wall-mounted
unit(b)
m (kg) Amin (m2)
Floor-standing
unit(c)
m (kg) Amin (m2)
mTotal refrigerant charge in the system
Amin Minimum floor area
(a) Ceiling-mounted unit (= Ceiling-mounted unit)

1 | General safety precautions
Installer reference guide
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3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1B – 2020.05
(b) Wall-mounted unit (= Wall-mounted unit)
(c) Floor-standing unit (= Floor-standing unit)
1.2.3 Refrigerant
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. In
Europe, EN378 is the applicable standard.
NOTICE
Make sure the field piping and connections are NOT subjected to stress.
WARNING
During tests, NEVER pressurize 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.
▪In case of R410A or R32 refrigerant: Toxic gas might be produced if refrigerant
gas comes into contact with fire.
▪In case of CO2 refrigerant: Refrigerant gas is toxic in high concentrations.
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
ALWAYS recover the refrigerant. Do NOT release them directly into the environment.
Use a vacuum pump to evacuate the installation.
NOTICE
After all the piping has been connected, make sure there is no gas leak. Use nitrogen
to perform a gas leak detection.
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.

1 | General safety precautions
Installer reference guide
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4P600463-1B – 2020.05
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.
▪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.
▪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.
1.2.4 Brine
If applicable. See the installation manual or installer reference guide of your
application for more information.
WARNING
The selection of the brine MUST be in accordance with the applicable legislation.
WARNING
Take sufficient precautions in case of brine leakage. If brine leaks, ventilate the area
immediately and contact your local dealer.

1 | General safety precautions
Installer reference guide
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4P600463-1B – 2020.05
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.
1.2.5 Water
If applicable. See the installation manual or installer reference guide of your
application for more information.
NOTICE
Make sure water quality complies with EU directive 98/83EC.
1.2.6 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 1minute, 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.

1 | General safety precautions
Installer reference guide
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R32 Split series
4P600463-1B – 2020.05
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.
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 m away from televisions or radios to prevent
interference. Depending on the radio waves, a distance of 1 m may not be
sufficient.

1 | General safety precautions
Installer reference guide
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4P600463-1B – 2020.05
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.
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.

2 | About the documentation
Installer reference guide
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2 About the documentation
2.1 About this document
Target audience
Authorised installers
INFORMATION
This appliance is intended to be used by expert or trained users in shops, in light
industry, and on farms, or for commercial and household use by lay persons.
WARNING
Make sure installation, servicing, maintenance, repair and applied materials follow
the instructions from Daikin and, in addition, comply with applicable legislation and
are performed by qualified persons only. In Europe and areas where IEC standards
apply, EN/IEC 60335-2-40 is the applicable standard.
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 outdoor unit)
▪Outdoor unit installation manual:
-Installation instructions
-Format: Paper (in the box of the outdoor unit)
▪Installer reference guide:
-Preparation of the installation, reference data,…
-Format: Digital files on http://www.daikineurope.com/support-and-manuals/
product-information/
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).
2.2 Installer reference guide at a glance
Chapter Description
General safety precautions Safety instructions that you MUST read before
installing

2 | About the documentation
Installer reference guide
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Chapter Description
About the documentation What documentation exists for the installer
About the box How to unpack the units and remove their
accessories
About the unit How to identify the unit
Preparation What to do and know before going on‑site
Installation What to do and know to install the system
Commissioning What to do and know to commission the system
after it is configured
Hand‑over to the user What to give and explain to the user
Maintenance and service How to maintain and service the units
Troubleshooting What to do in case of problems
Disposal How to dispose of the system
Technical data Specifications of the system
Glossary Definition of terms

3 | About the box
Installer reference guide
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3 About the box
3.1 Overview: About the box
This chapter describes what you have to do after the boxes with the outdoor and
indoor unit are delivered on-site.
Keep the following in mind:
▪At delivery, the unit MUST be checked for damage. Any damage MUST be
reported immediately to the claims agent of the carrier.
▪Bring the packed unit as close as possible to its final installation position to
prevent damage during transport.
▪Prepare the path along which you want to bring the unit inside in advance.
3.2 Outdoor unit
3.2.1 To unpack the outdoor unit

3 | About the box
Installer reference guide
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1
2
3.2.2 To remove the accessories from the outdoor unit
1Lift the outdoor unit.
CAUTION
Only handle the outdoor unit as follows:
2Remove the accessories at the bottom of the package.
1× 1× 1×
1× 6×
1×
a
1×
b c d e
3× 1× 1×
i j
g h
f

3 | About the box
Installer reference guide
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aOutdoor unit installation manual
bGeneral safety precautions
cFluorinated greenhouse gases label
dMultilingual fluorinated greenhouse gases label
eDrain socket
fScrew bag. The screws will be used for fixing the electrical wire anchor bands.
gDrain cap (small)
hDrain cap (large)
iReducer assembly
jEnergy label

4 | About the units and options
Installer reference guide
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4 About the units and options
4.1 Overview: About the units and options
This chapter contains information about:
▪Identification of the outdoor unit
4.2 Identification
NOTICE
When installing or servicing several units at the same time, make sure NOT to switch
the service panels between different models.
4.2.1 Identification label: Outdoor unit
Location