Daikin 3MXM40N2V1B, 3MXM52N2V1B, 3AMXM52M3V1B, 3MXM68N2V1B, 3AMXF52A2V1B Installer reference guide
...
Installer reference guide
R32 Split series
3MXM40N2V1B
3MXM52N2V1B
3AMXM52M3V1B
3MXM68N2V1B
3AMXF52A2V1B
3MXF52A2V1B
3MXF68A2V1B
4MXM68N2V1B
4MXM80N2V1B
5MXM90N2V1B
Installer reference guide
R32 Split series
English
Table of contents
Table of contents
1 General safety precautions 3
1.1 About the documentation .......................................................... 3
1.1.1 Meaning of warnings and symbols.............................. 3
1.2 For the installer.......................................................................... 3
1.2.1 General ....................................................................... 3
1.2.2 Installation site ............................................................ 3
1.2.3 Refrigerant .................................................................. 5
1.2.4 Brine............................................................................ 6
1.2.5 Water .......................................................................... 6
1.2.6 Electrical ..................................................................... 6
2 About the documentation 7
2.1 About this document.................................................................. 7
2.2 Installer reference guide at a glance ......................................... 7
3 About the box 7
3.1 Overview: About the box ........................................................... 7
3.2 Outdoor unit............................................................................... 7
3.2.1 To unpack the outdoor unit ......................................... 7
3.2.2 To remove the accessories from the outdoor unit....... 8
4 About the units and options 8
4.1 Overview: About the units and options...................................... 8
4.2 Identification .............................................................................. 8
4.2.1 Identification label: Outdoor unit ................................. 8
5 Preparation 8
5.1 Overview: Preparation............................................................... 8
5.2 Preparing the installation site .................................................... 8
5.2.1 Installation site requirements of the outdoor unit ........ 9
5.2.2 Additional installation site requirements of the
outdoor unit in cold climates ....................................... 10
5.2.3 Refrigerant piping length and height difference .......... 10
5.3 Preparing refrigerant piping....................................................... 10
5.3.1 Refrigerant piping requirements.................................. 10
5.3.2 Refrigerant piping insulation ....................................... 11
5.4 Preparing electrical wiring ......................................................... 11
5.4.1 About preparing electrical wiring................................. 11
6 Installation 11
6.1 Overview: Installation ................................................................ 11
6.2 Opening the unit ........................................................................ 12
6.2.1 About opening the unit................................................ 12
6.2.2 To open the outdoor unit............................................. 12
6.3 Mounting the outdoor unit.......................................................... 12
6.3.1 About mounting the outdoor unit................................. 12
6.3.2 Precautions when mounting the outdoor unit.............. 12
6.3.3 To provide the installation structure............................ 12
6.3.4 To install the outdoor unit............................................ 13
6.3.5 To provide drainage.................................................... 13
6.3.6 To prevent the outdoor unit from falling over .............. 13
6.4 Connecting the refrigerant piping .............................................. 13
6.4.1 About connecting the refrigerant piping ...................... 13
6.4.2 Precautions when connecting the refrigerant piping... 14
6.4.3 Guidelines when connecting the refrigerant piping..... 14
6.4.4 Pipe bending guidelines.............................................. 14
6.4.5 To flare the pipe end................................................... 15
6.4.6 Connections between outdoor and indoor unit using
reducers ...................................................................... 15
6.4.7 Using the stop valve and service port......................... 16
6.4.8 To connect the refrigerant piping to the outdoor unit .. 17
6.5 Checking the refrigerant piping ................................................. 17
6.5.1 About checking the refrigerant piping ......................... 17
6.5.2 Precautions when checking the refrigerant piping ...... 17
6.5.3 To check for leaks....................................................... 17
6.5.4 To perform vacuum drying .......................................... 17
6.6 Charging refrigerant ................................................................... 18
6.6.1 About charging refrigerant ........................................... 18
6.6.2 Precautions when charging refrigerant ........................ 18
6.6.3 About the refrigerant .................................................... 18
6.6.4 To determine the additional refrigerant amount........... 19
6.6.5 To determine the complete recharge amount.............. 19
6.6.6 To charge additional refrigerant ................................... 19
6.6.7 To fix the fluorinated greenhouse gases label ............. 19
6.7 Connecting the electrical wiring.................................................. 19
6.7.1 About connecting the electrical wiring.......................... 19
6.7.2 Precautions when connecting the electrical wiring ...... 19
6.7.3 Guidelines when connecting the electrical wiring ........ 20
6.7.4 Specifications of standard wiring components............. 20
6.7.5 To connect the electrical wiring on the outdoor unit..... 21
6.8 Finishing the outdoor unit installation ......................................... 21
6.8.1 To finish the outdoor unit installation ........................... 21
6.8.2 About standby electricity saving function..................... 22
6.8.3 About priority room function ......................................... 22
6.8.4 About night quiet mode ................................................ 22
6.8.5 About heat mode lock .................................................. 22
6.8.6 About cool mode lock................................................... 23
6.8.7 To close the outdoor unit ............................................. 23
7 Commissioning 23
7.1 Overview: Commissioning.......................................................... 23
7.2 Precautions when commissioning .............................................. 23
7.3 Checklist before commissioning................................................. 23
7.4 Checklist during commissioning ................................................. 23
7.5 Trial operation and testing.......................................................... 24
7.5.1 About wiring error check .............................................. 24
7.5.2 To perform a test run ................................................... 24
7.6 Starting up the outdoor unit ........................................................ 24
7.7 Fault diagnosis using LED on outdoor unit PCB ........................ 25
8 Hand-over to the user 25
9 Maintenance and service 25
9.1 Overview: Maintenance and service .......................................... 25
9.2 Maintenance safety precautions................................................. 25
9.3 Checklist for yearly maintenance of the outdoor unit ................. 25
9.4 About the compressor ................................................................ 25
10 Troubleshooting 26
10.1 Overview: Troubleshooting......................................................... 26
10.2 Precautions when troubleshooting ............................................. 26
10.3 Solving problems based on symptoms....................................... 26
10.3.1 Symptom: Indoor units fall, vibrate or make noise ....... 26
10.3.2 Symptom: The unit is NOT heating or cooling as
expected ...................................................................... 26
10.3.3 Symptom: Water leakage............................................. 26
10.3.4 Symptom: Electrical leakage........................................ 26
10.3.5 Symptom: Priority room setting does NOT function ..... 26
10.3.6 Symptom: Unit does NOT function or burn damage .... 26
11 Disposal 27
11.1 Overview: Disposal..................................................................... 27
11.2 To pump down............................................................................ 27
11.3 To start and stop forced cooling ................................................. 27
12 Technical data 28
12.1 Wiring diagram ........................................................................... 28
12.1.1 Unified wiring diagram legend...................................... 28
12.2 Piping diagram: Outdoor unit...................................................... 29
13 Glossary 31
Installer reference guide
2
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1 – 2019.10
1 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.
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.
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.
1.2 For the installer
1.2.1 General
If you are NOT sure how to install or operate the unit, contact your
dealer.
NOTICE
Improper installation or attachment of equipment or
accessories could result in electric 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.
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
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.
NOTICE
▪ 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.
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1 – 2019.10
Installer reference guide
3
1 General safety precautions
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO2eq
1000
GWP × kg
=
=
+
kg
=
kg
=
GWP: xxx
R32
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
1.822.2
2.4
2.6
2.833.2
3.4
3.6
3.844.2
4.4
4.6
4.855.2
5.4
5.6
5.866.2
6.4
6.6
6.877.2
7.4
7.6
7.8
1.843 7.956
8.0
A
min
(m2)
Floor-standing unit
(c)
Wall-mounted unit
(b)
Ceiling-mounted unit
(a)
m (kg)
▪ 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
If applicable.
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.
To determine the minimum floor area
1 Determine the total refrigerant charge in the system (= factory
refrigerant charge + additional refrigerant amount
charged).
2 Determine 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…
<1.8m Floor-standing units
1.8≤x<2.2m Wall-mounted units
≥2.2m Ceiling-mounted units
3 Use the graph or table to determine the minimum floor area.
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.
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.
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.
Installation space requirements
NOTICE
▪ Pipework shall be protected from physical damage.
▪ Installation of pipework shall be kept to a minimum.
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
Installer reference guide
4
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1 – 2019.10
1 General safety precautions
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)
A
min
(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)
A
min
(m2)
Floor-standing
unit
(c)
m (kg)
A
min
(m2)
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.
m Total refrigerant charge in the system
A
Minimum floor area
min
(a) Ceiling-mounted unit (= Ceiling-mounted unit)
(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.
▪ Toxic gas may be produced if refrigerant gas comes
into contact with fire.
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1 – 2019.10
WARNING
Make sure there is no oxygen in the system. Refrigerant
may only be charged after performing the leak test and the
vacuum drying.
▪ 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
Charge with the cylinder upright.
(i.e., the cylinder is marked with
"Liquid filling siphon attached")
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.
Installer reference guide
5
1 General safety precautions
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.
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
98/83EC.
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 electric 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, the earth connection
must be made before the current-carrying connections are
established. When disconnecting the power supply, the
current-carrying connections must be separated before the
earth connection is. 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:
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 1minute,
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.
▪ 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 metre away from televisions or radios
to prevent interference. Depending on the radio waves, a distance of
1metre may not be sufficient.
Installer reference guide
6
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1 – 2019.10
2 About the documentation
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
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.
2.2 Installer reference guide at a glance
Chapter Description
General safety
precautions
About the documentation What documentation exists for the
About the box How to unpack the units and remove
About the unit How to identify the unit
Preparation What to do and know before going
Installation What to do and know to install the
Commissioning What to do and know to commission the
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
Safety instructions that you MUST read
before installing
installer
their accessories
on‑site
system
system after it is configured
3 About the box
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).
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(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1 – 2019.10
Installer reference guide
7
4 About the units and options
1
2
1× 1× 1×
1×
6×
1×
a
1×
b c d e
3×
1×
1×
i j
g h
f
c Fluorinated greenhouse gases label
d Multilingual fluorinated greenhouse gases label
e Drain socket
f Screw bag. The screws will be used for fixing the electrical
wire anchor bands.
g Drain cap (small)
h Drain cap (large)
i Reducer assembly
j Energy label
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.
3.2.2 To remove the accessories from the outdoor unit
1 Lift the outdoor unit.
CAUTION
Only handle the outdoor unit as follows:
2 Remove the accessories at the bottom of the package.
4.2.1 Identification label: Outdoor unit
Location
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
Installer reference guide
8
a Outdoor unit installation manual
b General safety precautions
5.2 Preparing the installation site
Do NOT install the unit in places often used as work place. In case
of construction works (e.g. grinding works) where a lot of dust is
created, the unit MUST be covered.
Choose an installation location with sufficient space for carrying the
unit in and out of the site.
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1 – 2019.10
5 Preparation
≤1200
>100
>100
>50
>350
>350
(mm)(mm)
a
b
b
a
>250
>300
(mm)
b
a
b
c
▪ Choose a location where the hot/cold air discharged from the unit
or the operation noise, will NOT disturb anyone.
WARNING
Do NOT install the air conditioner at any place where
flammable gas may leak out. If the gas leaks out and stays
around the air conditioner, a fire may break out.
▪ Install units, power cables and communication wiring at least 3m
away from televisions or radios to prevent interference. Depending
on the radio waves, a distance of 3m may not be sufficient.
▪ Objects placed under the unit may be damaged by water from the
drain.
WARNING
If appliances contain R32 refrigerant, then the floor area of
the room in which the appliances are installed, operated
and stored must be larger than the minimum floor area.
This applies to:
▪ Indoor units without refrigerant leakage sensor; in
case of indoor units with refrigerant leakage sensor,
consult the installation manual
▪ Outdoor units installed or stored indoors (example:
winter garden, garage, machinery room)
▪ Field piping in unventilated spaces
WARNING
The appliance shall be stored in a room without
continuously operating ignition sources (example: open
flames, an operating gas appliance or an operating electric
heater).
NOTICE
▪ Do NOT stack the units on each other.
▪ Do NOT hang the unit on a ceiling.
Strong winds (≥18 km/h) blowing against the outdoor unit’s air outlet
causes short circuit (suction of discharge air). This may result in:
▪ deterioration of the operational capacity;
▪ frequent frost acceleration in heating operation;
▪ disruption of operation due to decrease of low pressure or
increase of high pressure;
▪ a broken fan (if a strong wind blows continuously on the fan, it
may start rotating very fast, until it breaks).
It is recommended to install a baffle plate when the air outlet is
exposed to wind.
It is recommended to install the outdoor unit with the air inlet facing
the wall and NOT directly exposed to the wind.
5.2.1 Installation site requirements of the outdoor unit
INFORMATION
Also read the following requirements:
▪ General installation site requirements. See the
"General safety precautions" chapter.
▪ Refrigerant piping requirements (length, height
difference). See further in this "Preparation" chapter.
Mind the following spacing guidelines:
a Air outlet
b Air inlet
Allow 300mm of work space below the ceiling surface and 250mm
for piping and electrical servicing.
a Baffle plate
b Prevailing wind direction
c Air outlet
Do NOT install the unit in the following places:
▪ Sound sensitive areas (e.g. near a bedroom), so that the
operation noise will cause no trouble.
Note: If the sound is measured under actual installation
conditions, the measured value might be higher than the sound
pressure level mentioned in Sound spectrum in the data book due
to environmental noise and sound reflections.
INFORMATION
The sound pressure level is less than 70dBA.
▪ In places where a mineral oil mist, spray or vapour may be
present in the atmosphere. Plastic parts may deteriorate and fall
off or cause water leakage.
It is NOT recommended to install the unit in the following places
because it may shorten the life of the unit:
▪ Where the voltage fluctuates a lot
▪ In vehicles or vessels
▪ Where acidic or alkaline vapour is present
Seaside installation. Make sure the outdoor unit is NOT directly
exposed to sea winds. This is to prevent corrosion caused by high
levels of salt in the air, which might shorten the life of the unit.
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1 – 2019.10
Installer reference guide
9
5 Preparation
b
c
a
a
b
c
d
c
d
a
b
c
c
d
Install the outdoor unit away from direct sea winds.
Example: Behind the building.
If the outdoor unit is exposed to direct sea winds, install a
windbreaker.
▪ Height of windbreaker≥1.5×height of outdoor unit
▪ Mind the service space requirements when installing the
windbreaker.
a Sea wind
b Building
c Outdoor unit
d Windbreaker
The outdoor unit is designed for outdoor installation only, and for
ambient temperatures within the following ranges:
Cooling mode Heating mode
–10~46°C DB –15~24°C DB
5.2.2 Additional installation site requirements of the outdoor unit in cold climates
Protect the outdoor unit against direct snowfall and take care that the
outdoor unit is NEVER snowed up.
It is recommended to provide at least 150mm of free space below
the unit (300mm for heavy snowfall areas). Additionally, make sure
the unit is positioned at least 100mm above the maximum expected
level of snow. If necessary, construct a pedestal. See "6.3Mounting
the outdoor unit"[412] for more details.
In heavy snowfall areas it is very important to select an installation
site where the snow will NOT affect the unit. If lateral snowfall is
possible, make sure that the heat exchanger coil is NOT affected by
the snow. If necessary, install a snow cover or shed and a pedestal.
5.2.3 Refrigerant piping length and height difference
INFORMATION
For the Hybrid for Multi application and the DHW generator
for Multi, see the indoor unit installation manual for the
maximum allowable refrigerant piping length and height
difference.
The shorter the refrigerant piping, the better the performance of the
system.
The piping length and height differences must comply with the
following requirements.
Model Minimum required space
3MXM40, 3MXM52, 3AMXM52,
3MXF52, 3AMXF52
3MXM68, 3MXF68 5.5m
4MXM68 6.5m
4MXM80 9.8m
5MXM90 10.4m
Shortest allowable length per room is 3m.
Outdoor unit Refrigerant piping
length to each indoor
unit
3MXM40,
≤25m ≤50m
3MXM52,
3AMXM52,
3MXM68,
3MXF52,
3AMXF52,
3MXF68
4MXM68 ≤60m
4MXM80 ≤70m
5MXM90 ≤75m
2
4.7m
2
2
2
2
Refrigerant piping
total length
Installer reference guide
10
a Snow cover or shed
b Pedestal
c Prevailing wind direction
d Air outlet
Outdoor unit installed
Height difference
outdoor-indoor
≤15m ≤7.5m
Height difference
indoor-indoor
higher than indoor
unit
Outdoor unit installed
≤7.5m ≤15m
lower than at least 1
indoor unit
5.3 Preparing refrigerant piping
5.3.1 Refrigerant piping requirements
INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Piping diameter:
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1 – 2019.10
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