Haier 3U55S2PR1FA User manual

Original instructions
Keep this manual or uture re erence.
This product must only be installed or serviced by quali ied personnel.
Please read this manual care ully be ore installation.This appliance is illed with R32.
INSTALLATION MANUAL
Original Instructions
MULTI-SPLIT AIR CONDITIONER
3U55S2PR1FA
4U71S2PR1FA
4U80S2PR1FA
5U125S2PN1FA
0150558811
Move and scrap the air conditioning
Contents
Safety Precautions
Read Before Installation
Accessories
Procedure for Selecting the location
Installation drawings of indoor and
outdoor units
Precautions on Installation
Limitations on the installation
Refrigerant piping work
Pump Down Operation
Wiring work
Dred function
Test running
Trouble shooting
23
19
English
30
Outdoor Unit Installation
5U125S2PN1FA
5U100S2PS1FA

Your air conditioning product is marked with this
symbol.This means that electrical and electronic
products shall not be mixed with unsorted
household waste.Do not try to dismantle the
system yoursel :the dismantling o the air
conditioning system,treatment o the re rigerant,o oil and o
other part must be done by a quali ied installer in accordance
with relevant local and national legislation.Air conditioners
must be treated at a specialized treatment acility or reuse,
recycling and recovery.By ensuring this product is disposed
o correctly,you will help to prevent potential negative cons-
equences or the environment and human health.Please
contact the installer or local authority or more in ormation.
Battery must be removed rom the remote controller and dis-
posed o separately in accordance with relevant local and
national legislation.
The products are ul illed with the requirements in the
directive 2011/65/EU o the European parliament and o
council on the Restriction o the use o Certain Hazardous
Substances in Electrical and Electronic Equipment(EU
RoHS Directive)
WEEE
In accordance with the directive 2012/19/EU o the European
parliament,herewith we in orm the consumer about the dis-
posal requirements o the electrical and electronic products.
DISPOSAL REQUIREMENTS:
Contains luorinated greenhouse gases
covered by the Kyoto Protocol
This product contains luorinated greenhouse gases covered
by the Kyoto Protocol.Do not vent into the atmosphere.
Re rigerant type:R32
GWP*value:675
GWP=global warming potential
Please ill in with indelible ink,
1 the actory re rigerant charge o the product
2 the additional re rigerant amount charged in the ield
and
1+2 the total re rigerant charge
on the re rigerant charge label supplied with the product.
The illed out label must be adhered in the proximity o the
product charging port(e.g.onto the inside o the stop value
cover).
A contains luorinated greenhouse gases covered by the
Kyoto Protocol
B actory re rigerant charge o the product:see unit name
plate
C additional re rigerant amount charged in the ield
D total re rigerant charge
E outdoor unit
F re rigerant cylinder and mani old or charging
Air conditioner working temperature: cooling -10~46 degree, heating -15~24 degree.
The single indoor unit will reduce in heating e iciency i the ambient temperature is under 0 degree.
WARNING
IMPORTANT INFORMATION REGA-
RDING THE REFRIGERANT USED
1
A
B
C
D
kg
kg
kg
R32
I the supply cord is damaged, it must be replaced by the manu acturer, its service agent or similarly
quali ied persons in order to avoid a hazard.
This appliance is not intended or use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack o experience and knowledge, unless they have been given supervision
or instruction concerning use o the appliance by a person responsible or their sa ety.
Children should be supervised to ensure that they do not play with the appliance.
This appliance can be used by children aged rom 8 years and above and persons with reduced physical,
sensory or mental capabilities or lack o experience and knowledge i they have been given supervision
or instruction concerning use o the appliance in a sa e 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.
The appliances are not intended to be operated by means o an external timer or separate remote-
control system.
Keep the appliance and its cord out o reach o children less than 8 years.
The A-weighted sound pressure level is below 70 dB.
This appliance is intended to be used by expert or trained users in shops, in light industry and on arms,
or or commercial use by lay persons.
Disconnect the appliance rom its power source during maintenance service and when replacing parts.

A ter reading this handbook, hand it over to those who will be using the unit.
The user o the unit should keep this mamual at hand and make it available to those who will be
per orming repairs or relocating the unit. Also, make it available to the new user when the user changes
hands.
WARNING
CAUTION:
2
Ask your dealer or quali ied personnel to carry out installation work.Do not attempt to install the air
conditioner yoursel . Improper Installation may result in water leakage, electric shocks, ire or explosion.
All the cables shall have got the European authentication certi icate. During installation, when the
connecting cables break o , it must be assured that the grouding wire is the last one to be broken o .
I re rigerant gas leaks during installation, ventilate the area immediately.oxic gas may be produced.i the
re rigerant comes into contact with ire,and explosion may be happen.
Make sure ground connection is correct and reliable.Do not earth the unit to a utility pipe, lightning
conductor or telephone earth lead. Imper ect earthing may result in electric shocks.
The breaker o the air conditioner should be all-pole switch and explosion-proo . The distance between
its two contacts should not be no less than 3mm. Such means or disconnection must be incorporated in
the wiring.
The air conditioning sockets should be placed 1m above rom the air conditioner, nor under the air
conditioner. Be sure not to use open lame, high static electrical or high temperature equipments
etc.nearby the air conditioner.
Do not use means to accelerate the de rosting process or to clean, other than those recommended by
the manu acturer.
The appliance must be stored in a room without continuously operating ignition sources, the radius o the
storage area should be no less than 2.5 m ( or example:open lames, an operating gas appliance or an
operating electric heater).
Do not pierce or burn.
Be aware that re rigerants may not contain an odour.
The appliance must be installed, operated and stored in a room with a loor area larger than the Minimum
Room Area speci ied in the table on the ollowing pages,The room should be well ventilated.
Comply with national gas regulations.
This appliance can be used by children aged 8 years and above and persons with reduced physical,
sensory or mental capabilities or lack o experience and knowledge i they have been given superivision
or instruction concering use o the appliance in a sa e 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.
The air conditioner can not be discarded or scrapped Randomly I you need please contact customer
service personnel o Haier to scrap in order to obtain the correct disposal methods.
Reusable mechanical connectors and lared joints are not allowed indoor.
Read the recautions in this manual
carefully before o erating the unit.
This symbol shows that this appliance
uses a flammable refrigerant.
If the refrigerant is leaked and exposed
to an external ignition source, there is a
risk of fire.
Do not install the air conditioner at any place where there is danger o lammable gas leakage.In the event o a gas leakage,
build-up o gas near the air conditioner may cause a ire to break out.
Tighten the lare nut according to the speci ied method such as with a torque wrench.I the lare nut is too tight, it may crack
a ter prolonged use, causing re rigerant leakage.
Take adequate steps to prevent the outdoor unit being used as a shelter by small animals.Small animals.making contact with
electrical parts can cause mal unctions, smoke or ire.
Please instruct the customer to keep the area around the unit clean
The temperature o re rigerant circuit will be high, please keep the inter-unit wire away rom copper pipes that not thermally
insulated.
Only quali ied personnel can handle, ill, purge and dispose o the re rigerant.
Read the o erator's manual Service indicator, read technical
manual

Safety Precautions
The installation, maintenance, service and repair operations o this product shall be carried
out by pro essional personnel, who have been trainedand certi ied by national training
organizations that areaccredited to teach the relevant national competency standards
that may be set in legislation.
Improper installation may cause water leakage, electrical shock, ire, or explosion.
Install the air conditioner according to the instructions given in this manual.
Incomplete installation may cause water leakage, electrical shock, ire, or explosion.
Be sure to use the supplied or speci ied installation parts.
Use o other parts may cause the unit to cometo lose, water leakage, electrical shock, ire, or explosion.
Install the air conditioner on a solid base that can support the unit's weight.
An inadequate base or incomplete installation may cause injury in the event the unit alls o the base.
Electrical work should be carried out in accordance with the installation manual and the
national electrical wiring rules or code o practice.
Insu icient capacity or incomplete electrical work may cause electrical shock, ire, or explosion.
Be sure to use a dedicated power circuit. Never use a power supply shared by another
appliance.
For wiring, use a cable long enough to cover the entire distance with no connection.
Do not use an extension cord. Do not put other loads on the power supply, use a dedicated
power circuit.
(Failure to do so may cause abnormal heat, electrical shock, ire, or explosion.)
Use the speci ied types o wires or electrical connections between the indoor and outdoor
units.
Firmly clamp the interconnectiong wires so their terminals receive no external stresses. Incomplete connections or clamping
may cause terminal overheating, ire, or explosion.
A ter connectiong interconnecting and supply wiring be sure to shape the cables so that
they do not put undue orce on the electrical covers or panels.
Install covers over the wires. Incomplete cover installation may cause terminal overheating, electrical shock, ire, or explosion.
I any re rigerant has leaked out during the installation work, ventilate the room.
(The re rigerant produces a toxic gas i exposed to lames, may cause explosion.)
A ter all installation is complete, check to make sure that no re rigerant is leaking out.
(The re rigerant produces a toxic gas i exposed to lames, may cause explosion.)
When installing or relocating the system, be sure to keep the re rigerant circuit ree rom
substancs other than the speci ied re rigerant(R32), such as air.
(Any presence o air or other oreign substance in the re rigerant circuit causes an abnormal pressure rise or rupture,
resulting in injury.)
During pump-down, stop the compressor be ore removing the re rigerant piping.
I the compressor is still running and the stop valve is open during pump-down, air will be sucked in when the compressor
is run, causing abnormal pressure in the reezer cycle which will lead to breakage and even injury.
Be sure to establish an earth. Do not earth the unit to a utility pipe, arrester, or telephone
earth.
Incomplete earth may cause electrical shock, ire, or explosion. A high surge current rom lightning or other sources may cause
damage to the air conditioner.
The installation o pipe-work shall be kept to a minimum.
Pipe-work shall be protected rom physical damage and shall not be installed in an unventilated space, i that space is
smaller than the Minimum Room Area speci ied in the table on the ollowing pages.
Mechanical connections shall be accessible or maintenance purposes.
In ormation or handling, installation, cleaning, servicing and disposal o re rigerant.
Warning: Keep any required ventilation openings clear o obstruction.
Notice: Servicing shall be per ormed only as recommended by this manual instruction.
Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in electric shocks, ire, or explosion.
WARNING
3

Loading and Unloading/Trans orting Management/Storage Requirements
Loading and Unloading Requirements
Installation Precautions
Trans orting Management Requirements
Storage Requirements
Installation Instructions
WARNING!
Do not install the air conditioner in a place where there is danger o exposure to in lammable gas leakage.
I the gas leaks and builds up around the unit, it may catch ire or explosion.
Establish drain piping according to the instructions o this manual.
Inadequate piping may cause looding.
Tighten the lare nut according to the speci ied method such as with a torque wrench.
I the lare nut is tightened too hard, the alre nut may crack a ter a long time and cause re rigerant leakage.
Make sure to provide or adequate measures in order to prevent that the outdoor unit be used as a shelter by small animals.
Small animals making contact with electrical parts can cause mal unctions, smoke ire, or explosion. Please instruct the customer to
keep the area around the unit clean.
CAUTION
4
1) The products shall be care ully handled during loading and unloading.
2) Rude and barbarous handling such as kicking, throwing, dropping, bumping, pulling and rolling is not allowed.
3) The workers engaged in loading and unloading must be subject to necessary trainings on the potential hazards caused by
barbarous handling.
4) Dry powder extinguishers or other suitable ire extinguishing apparatus within the period o validity shall be equipped at the
loading and unloading site.
5) The untrained personnel cannot be engaged in loading and unloading o lammable re rigerants air conditioner.
6) Be ore loading and unloading, anti-static measures shall be taken, and phones cannot be answered during loading and
unloading.
7) Smoking and open ire are not allowed around the air conditioner.
1) The maximum transporting volume o inished products shall be determined as per local regulations.
2) The vehicles used or transporting shall be operated as per local laws and regulations.
3) Dedicated a ter-sales vehicles shall be used or maintenance, and exposed transporting o re rigerant
cylinders and the products to be maintained is not allowed.
4) The rain cover or similar shielding material o transporting vehicles shall be provided with certain lame retardancy.
5) Leakage warning device o lammable re rigerant shall be installed inside the closed-type compartment.
6) Anti-static device shall be equipped inside the compartment o transporting vehicles.
7) Dry powder extinguishers or other suitable ire extinguishing apparatus within the period o validity shall be equipped inside
the driver's cab.
8) Orange-white or red-white re lective stripes shall be pasted on the sides and tail o the transporting vehicles, to remind the
vehicles behind o keeping distance.
9) The transporting vehicles shall run at a constant speed, and heavy acceleration/deceleration shall be avoided.
10) Combustibles or the static articles cannot be transported simultaneously.
11) High-temperature area shall be avoided during transporting, and necessary radiating measures shall be taken in case the
temperature inside the compartment is too high.
1) The storage package o equipment used shall be such that no leakage o re rigerant will be caused due to mechanical
damage o the equipment inside.
2) The appliance must be stored in a room without continuously operating ignition sources, the radius o the storage area
should be no less than 2.5 m ( or example:open lames, an operating gas appliance or an operating electric heater).
3) Do not pierce or burn.
4) The maximum quantity o the equipment allowed to be stored together shall be determined as per local regulations.
The area o the room in which R32 re rigerant air conditioner is installed cannot be less than the minimum area speci ied in
the table below, to avoid potential sa ety problems due to out-o -limit o re rigerant concentration inside the room caused by
leakage o re rigerant rom re rigeration system o the indoor unit.
Once the horn mouth o connecting lines is astened, it may not be used again (the air tightness may be a ected).
A whole connector wire shall be used or indoor/outdoor unit as required in the operation speci ication o installation process
and operation instructions.

Safety Awarenes
Un acking Ins ection
Ins ection on Installation Environment
Safety Princi les of Installation
No Smoking Cotton clothes Anti-static gloves
BEWARE
ELECTROSTATICS Goggles
Caution, risk o ire
Minimum Room Area
Type
R32 0.306
LFL
kg/m3
h0
m
0.6
1.0
1.8
2.2
Total Mass Charged/kg
Minimum Room Area/m2
1.224 1.836 2.448 3.672 4.896 6.12 7.956
29 51 116 206 321 543
10 19 42 74 116 196
3 6 13 23 36 60
24 9 152440
5
1.Procedures: operation shall be made as per controlled procedures to minimize the probability o risks.
2.Area: area shall be divided and isolated appropriately, and operation in an enclosed space shall be avoided. Be ore the
re rigeration system is started or be ore working, ventilation or opening o the area shall be guaranteed.
3.Site inspection: the re rigerant shall be checked.
4.Fire control: the ire extinguisher shall be placed nearby, and ire source or high temperature is not allowed; the sign o "No
smoking"shall be arranged.
1.Indoor unit: nitrogen is sealed during the delivery o indoor units (inside the evaporator), and the red sign at the top o the
green plastic seal cap on the evaporator air pipes o the indoor unit shall be checked irst a ter unpacking. In case the sign is
raised, the nitrogen sealed still exists. A terwards, the black plastic seal cap at the joint o evaporator liquid pipes o the indoor
unit shall be pressed, to check whether nitrogen still exists. In case no nitrogen is sprayed out, the indoor unit is subject to
leakage, and installation is not allowed.
2.Outdoor unit: the leak detection equipment shall be extended into the packing box o the outdoor unit, to check whether the
re rigerant is leaking. I the re rigerant leakage is identi ied, installation is not allowed, and the outdoor unit shall be delivered
to the maintenance department.
1.The room area checked cannot be less than the area speci ied on the warning sign o the indoor unit.
2.Inspection on the surrounding environment o place o installation: the outdoor unit o lammable re rigerants air conditioner
cannot be installed inside an enclosed room reserved.
3.Power supply, switches or other high-temperature articles such as the ire source and oil heater shall be avoided below the
indoor unit.
4.The power supply shall be provided with earthing wire and be reliably earthed.
5.While punching the wall with an electric drill, whether embedded water/electricity/gas pipelines are designed at the hole preset
by the user shall be veri ied in advance. It is recommended that the through-wall holes reserved shall be used as much as
possible
1. Favorable ventilation shall be maintained at the place o installation (doors and windows are opened).
2. Open ire or high-temperature heat source (including welding, smoking and oven) higher than 548 is not allowed within
the scope o lammable re rigerant.
3. Anti-static measures shall be taken, such as the wearing o cotton clothes and cotton gloves.
4. The place o installation shall be convenient or installation or maintenance. Barriers shall be avoided around the air
inlet/outlet o the indoor/outdoor unit, and the electrical appliance, power switches, sockets, valuables and high-temperature
products within the scope o both sidelines o the indoor unit shall be avoided, and cannot be adjacent to heat source and
lammable and combustible environment.
5. In case o re rigerant leakage o the indoor unit during installation, the valve o the outdoor unit shall be closed immediately,
and windows shall be opened, and all the personnel shall be evacuated. A ter the leakage o re rigerant is handled, the indoor
environment shall be subject to concentration detection. Further handling is not allowed until the sa ety level is reached.
6. In case the product is damaged, it must be delivered to the maintenance point. Welding o re rigerant pipelines at the user’s
site is not allowed.

Electrical Safety Requirements
Qualification Requirements of Installer
Indoor Unit Installation
2. Pi ing layout
3. Nitrogen charging for ressure maintaining and leak detection
Outdoor Unit Installation
6
1.The surrounding conditions (ambient temperature, direct sunlight and rainwater) shall be noticed during electrical wiring,
with e ective protective measures being taken.
2.Copper wire cable in line with local standards shall be used as the power line and connector wire.
3.Both the indoor unit and outdoor unit shall be reliably earthed.
4.Wiring or the outdoor unit shall be made irst and then the indoor unit. The air conditioner can only be powered on a ter
wiring and pipe connection.
5.The dedicated branch circuit must be used, and leakage protector with su icient capacity must be installed.
Relevant quali ication certi icate must be obtained as per national laws and regulations.
1.Fixing of wall anel and i ing layout
In case o le t/right water pipe connection or the indoor unit, or in case the evaporator inter ace o the indoor unit and the horn
mouth o the connecting piping cannot be extended to the outdoor side or installation, the connector pipes shall be connected
to the evaporator piping inter ace o the indoor unit in the process o horn mouth.
During layout o connecting pipes, drain hose and connector wires, the drain hose and connecting wire shall be placed at the
bottom and top respectively. The power line cannot be twined with the connector wire. The drain pipes (especially inside the
room and machine) must be winded with thermal insulation materials.
A ter the evaporator o the indoor unit is connected to the connector pipe (a ter welding), nitrogen more than 4.0MPa
shall be charged inside the evaporator and the piping connected to evaporator with a nitrogen cylinder(adjusted by a reducing
valve). A terwards, the valve o the nitrogen cylinder shall be closed, or leak detection with soapy water or leak detecting
solution. The pressure shall be maintained or more than 5 minutes, and then whether the system pressure is reduced or not
shall be observed. In case the pressure is reduced, leakage can be identi ied. A ter the leak point is handled, the steps above
shall be repeated.
A ter the evaporator o the indoor unit is connected to connecting piping, nitrogen shall be charged or pressure maintaining
and leak detection. A terwards, the evaporator shall be connected to the two-way stop valve and three-way stop valve o the
outdoor unit. A ter the copper cap o the connecting piping is astened, nitrogen more than 4.0MPa shall be charged at the
access hole o the three-way stop valve with a charging hose. The valve o the nitrogen cylinder shall be closed, or leak
detection with soapy water or leak detecting solution. The pressure shall be maintained or more than 5 minutes, and then
whether the system pressure is reduced or not shall be observed. In case the pressure is reduced, leakage can be identi ied.
A ter the leak point is handled, the steps above shall be repeated.
The next step (vacuumizing with a vacuum pump) can only be continued a ter the installation steps (nitrogen charging or
pressure maintaining and leak detection normal) are completed.
1.Fixing and connection
Note:
a) Fire source shall be avoided within 3m around the place o installation.
b) The leak detection equipment o re rigerant shall be placed at a low position in the
outdoor, and shall be opened.

Vacuumizing
Leak Detection
Post-installation Ins ection Items and Test Run
Post-installation Ins ection Items
Test Run
Items to Be Checked
Whether the installation is irm or not
Whether the inspection on air leakage is completed
Whether the unit is ully insulated
Whether the drainage is smooth or not
Whether the power voltage is identical to that marked on the
nameplate
Whether the circuit and pipeline are installed correctly
Whether the unit is sa ely earthed
Whether the type o wire is in line with relevant regulations
Whether barriers are identi ied at the air inlet/outlet o the
indoor/outdoor unit
Whether the length o re rigerant pipes and the re rigerant
amount charged are recorded
Consequence of Im ro er Installation
The unit may all, vibrate or make a noise
The re rigerating capacity (heating capacity) may be insu icient
Condensation or drip may occur
Condensation or drip may occur
Failure may occur or the parts may be burned
Failure may occur or the parts may be burned
Electric leakage may occur
Failure may occur or the parts may be burned
The re rigerating capacity (heating capacity) may be
insu icient
The re rigerant amount charged cannot be con irmed
7
1) Fixing
The support o the outdoor unit shall be ixed onto the wall sur ace, and then the outdoor unit shall be ixed onto the support
horizontally. In case the outdoor unit is wall-mounted or roo -mounted, the support shall be irmly ixed, to avoid the damage o
strong wind.
2) Installation o connecting pipes
The cone o the connecting pipes shall be aligned with the conical sur ace o corresponding valve connector. The nut o
connecting pipes shall be installed at a proper position and then be tightened with a spanner. Excessive tightening torque shall
be avoided, or otherwise the nut may be damaged.
A digital vacuum gauge shall be connected or vacuumizing. The duration o vacuumizing shall be at least 15 minutes,
and the pressure o the vacuum gauge shall be below 60Pa.A terwards, the vacuumizing equipment shall be closed, and
whether the reading o the digital vacuum gauge is increased or not shall be observed a ter the pressure is maintained or 5
minutes. In case no leakage is identi ied, the two-way stop valve and three-way stop valve o the outdoor unit may be opened.
Finally, the vacuumizing hose connected to the outdoor unit can be disassembled.
The joint o connecting pipes or the outdoor unit shall be subject to leak detection with soap bubble or dedicated leak
detection equipment.
1. Preparations
(1) Check the power supply.
(2) Check the equipment around, whether there is any combustible source, ire source,or heat source.
(3) Power on is not allowed be ore all the installation operations are completed and be ore the leak detection is proven quali ied.
(4) The control circuit shall be connected correctly and all the wires shall be irmly connected.
(5) The two-way stop valve and three-way stop valve shall be opened.
(6) All the scattered articles (especially the metal iling and thread residue) shall be removed rom the unit body.
2. Methods
(1) Switch on the power supply and press the "ON/OFF" on the remote controller, a ter which the air conditioner will start
operating.
(2) Press "Mode"to select re rigeration, heating and sweeping wind, and observe whether the air conditioner is under normal
operation.

Relocation Procedures
Sa ety discharge o re rigerant
Sa ety discharge o re rigerant
Inspection on operational state Disassembly
Re rigerant recovery by the
system
Cleaning o the indoor unit and
connecting pipes with inert gas
Disassembly
Installation as required in
standards
Inspection on system leakage prior
to disassembly Disassembly
8
For all the aults requiring welding the re rigeration pipelines or components inside the re rigeration system o R32 re rigerant
air conditioners, maintenance at the user's site is never allowed.
For the aults requiring radical disassembly and bending operation o the heat exchanger, such as the replacement o the
outdoor unit chassis and integral disassembly o the condenser, inspection and maintenance at the user's site are never
allowed.
For the aults requiring replacement o the compressor or parts & components o re rigeration system, maintenance at the
user's site is not allowed.
For other aults not involved in the re rigerant container, internal re rigeration pipelines and re rigeration elements, the
maintenance at the user's site is allowed, including the cleaning and dredging o the re rigeration system requiring no
disassembly o re rigeration elements and no welding.
In case replacement o gas/liquid pipes is required during maintenance, the joint o evaporator gas/liquid pipes o the indoor
unit shall be cut o with a cutting kni e. Connection is only allowed a ter re- laring (the same to the outdoor unit).
Note: in case relocation is required, the joint o evaporator gas/liquid pipes o the indoor unit shall be cut o with a cutting kni e.
Connection is only allowed a ter re- laring (the same to the outdoor unit).
Maintenance Instructions
Maintenance Precautions
Precautions
Qualification Requirements of Maintenance Personnel
1. All the operators or the maintenance personnel involved in re rigerating circuits shall be provided with the e ective certi icate
issued by an industry-accepted assessment institute, to ensure that they are quali ied or sa ety disposal o re rigerant as
required in the assessment regulations.
2. The equipment can only be maintained and repaired as per the method recommended by the manu acturer. In case the
assistance rom personnel o other disciplines is required, the assistance shall be supervised by the personnel with quali ication
certi icate involved in lammable re rigerant.
Please call the dealer or the appointed agency.
Follow the ollowing procedures:

Ins ection on Maintenance Environment
Maintenance Site Requirements
Leak Detection Methods
Safety Princi les
9
Be ore operation, the re rigerant leaked in the room is not allowed.
The area o the room in which maintenance is made shall be in line with this manual.
Continuous ventilation shall be maintained during maintenance.
Open ire or high-temperature heat source higher than 548 degree which can easily give birth to open ire is not allowed
inside the room within the maintenance area.
During maintenance, the phones and the radioactive electronics o all the operators inside the room must be powered o .
One dry powder or carbon dioxide extinguisher shall be equipped inside the maintenance area, and the extinguisher must
be under available state.
The maintenance site shall be provided with avorable ventilation and must be lat. Arrangement o the maintenance site
inside the basement is not allowed.
Welding zone and non-welding zone shall be divided at the maintenance site, and shall be clearly marked. A certain sa ety
distance must be guaranteed between the two zones.
Ventilators shall be installed at the maintenance site, and exhaust ans, ans, ceiling ans, loor ans and dedicated exhaust
duct can be arranged, to meet the requirements o ventilation volume and uni orm exhaust, and to avoid accumulation o
re rigerant gas.
Leak detection equipment or lammable re rigerant shall be equipped, with relevant management system being established.
Whether the leak detection equipment is under available state shall be con irmed be ore maintenance.
Su icient dedicated vacuum pumps o lammable re rigerant and re rigerant charging equipment shall be equipped, with
relevant management system or maintenance equipment being established. It shall be guaranteed that the maintenance
equipment can only be used or vacuumizing and charging o one type o lammable re rigerant, and mixed usage is not
allowed.
The master power switch shall be arranged outside the maintenance site, with protective (anti-explosive) device being
equipped.
Nitrogen cylinders, acetylene cylinders and oxygen cylinders shall be placed separately. The distance between the gas
cylinders above and the working area involved in open ire shall be at least 6m. The anti-back ire valve shall be installed or
the acetylene cylinders. The color o the acetylene cylinders and oxygen cylinders installed shall meet the international
requirements.
The warning sign o " No Fire" ,"No Smoking", or"Anti static"shall be arranged inside the maintenance area.
Fire control device suitable or electric appliance such as the dry powder extinguisher or carbon dioxide extinguisher shall
be equipped, and shall always be under the available state.
The ventilator and other electrical equipment at the maintenance site shall be relatively ixed, with standardized pipe
routing. Temporary wires and sockets at the maintenance site are not allowed.
The environment in which the re rigerant leakage is checked shall be ree rom potential ignition source. Leak detection with
halogen probes (or any other detector with open ire) shall be avoided.
For the system containing lammable re rigerant, leak detection may be realized with electronic leak detection equipment.
During leak detection, the environment in which the leak detection equipment is calibrated shall be ree rom re rigerant. It
shall be guaranteed that the leak detection equipment will not become potential ignition source, and is applicable to the
re rigerant to be detected. Leak detection equipment shall be set at a percentage o the LFL o the re rigerant and shall be
calibrated to the re rigerant employed, and the appropriate percentage o gas (25 % maximum) is con irmed.
The luid used or leak detection shall be applicable to most o the re rigerant. The use o chlorine-containing solvent shall
be avoided, to avoid chemical reaction between chlorine and re rigerant and corrosion to copper pipelines.
In case leakage is suspected, the open ire at the site shall be evacuated or be put out.
In case welding is required at the leakage position, all the re rigerants shall be recovered, or be isolated at a position ar
rom the leak point with a stop valve. Be ore and during welding, the whole system shall be puri ied with OFN.
The power supply should be cut o be ore the maintenance.
During product maintenance, avorable ventilation shall be guaranteed at the maintenance site, and the close o all the
doors/windows is not allowed.
Operation with open ire is not allowed, including welding and smoking. The use o phones is also not allowed. The user
shall be in ormed that cooking with open ire is not allowed.
During maintenance in a dry season, when the relative humidity is less than 40%, anti-static measures shall be taken,
including the wearing o cotton clothes and cotton gloves.
In case the leakage o lammable re rigerant is identi ied during maintenance, orced ventilation measures shall be taken
immediately, and the source o leak shall be plugged.
In case the product damaged must be maintained by disassembling the re rigeration system, the product must be delivered
to the maintenance point. Welding o re rigerant pipelines at the user's site is not allowed.
During maintenance, in case re-treatment is required due to lack o ittings, the air conditioner shall be reset.
The re rigeration system must be sa ely earthed in the whole course o maintenance.
For the door-to-door service with re rigerant cylinders, the re rigerant charged inside the cylinder cannot exceed the speci ied
value. The cylinder placed in vehicles or at the installation/maintenance site shall be ixed perpendicularly and be kept away
rom heat sources, ignition source, source o radiation and electric appliance.

Maintenance Items
Maintenance Requirements
Maintenance of Electrical Com onents
Maintenance of Intrinsically Safe Elements
Removal and Vacuumizing
Welding
10
Be ore the re rigeration system is operated, the circulating system shall be cleaned with nitrogen. A terwards, the outdoor
unit shall be vacuumized, the duration o which cannot be less than 30 minutes. Finally, 1.5~2.0MPa OFN shall be used or
nitrogen lushing (30 seconds~1 minute), to con irm the position requiring treatment. Maintenance o the re rigeration system
is only allowed a ter the residual gas o lammable re rigerant is removed.
During the use o re rigerant charging tools, cross contamination o di erent re rigerants shall be avoided. The total length
(including the re rigerant pipelines) shall be shortened as much as possible, to reduce the residual o re rigerant inside.
The cylinders o re rigerant shall be kept upright, and be ixed.
Be ore re rigerant charging, the re rigeration system shall be earthed.
The re rigerant charged shall be o the type and volume speci ied on the nameplate. Excessive charging is not allowed.
A ter maintenance o the re rigeration system, the system shall be sealed with a sa e manner.
The maintenance in progress shall not damage or lower the original class o sa ety protection o the system.
Partial o the electrical component under maintenance shall be subject to inspection on re rigerant leakage with dedicated
leak detection equipment.
A ter the maintenance, the components with sa ety protection unctions cannot be disassembled or removed.
During the maintenance o sealing elements, be ore opening the seal cover, the air conditioner shall be powered o irst.
When power supply is required, continuous leak detection shall be carried out at the most dangerous position, to avoid potential
risks.
During maintenance o electrical components, the replacement o enclosures shall not a ect the level o protection.
A ter maintenance, it shall be guaranteed that the sealing unctions will not be damaged or the sealing materials will not
lose the unction o preventing the entry o lammable gas due to aging. The substitute components shall meet the recommended
requirements o the air conditioner manu acturer.
The intrinsically sa e element re ers to the components working continuously inside lammable gas without any risks.
Be ore any maintenance, leak detection and inspection on earthing reliability o the air conditioner must be carried out, to
ensure no leakage and reliable earthing.
In case the allowable voltage and current limit may be surpassed during the service o the air conditioner, any inductance or
capacitance cannot be added in the circuit.
Only the elements appointed by the air conditioner manu acturer can be used as the parts and components replaced, or
otherwise a ire or explosion may be triggered in case o re rigerant leakage.
For the maintenance not involved in system pipelines, the system pipelines shall be well protected, to ensure that no
leakage will be caused due to maintenance.
A ter maintenance and be ore test run, the air conditioner must be subject to leak detection and inspection on earthing
reliability with leak detection equipment or leak detecting solution. It shall be guaranteed that the startup inspection is carried
out without leakage and under reliable earthing.
The maintenance or other operations o the re rigeration circuit shall be made as per conventional procedures. Moreover,
the lammability o re rigerant shall also be mainly considered. The ollowing procedures shall be ollowed:
Re rigerant cleaning;
Pipeline puri ication with inert gas;
Vacuumizing;
Pipeline puri ication again with inert gas;
Pipeline cutting or welding. The re rigerant shall be recovered to a proper cylinder. The system shall be purged with OFN, to
ensure sa ety. The step above may need to be repeated or several times. Compressed air or oxygen cannot be used or
purging.
In the course o purging, OFN shall be charged inside the re rigeration system under vacuum state, to reach the operating
pressure. A terwards, the OFN shall be discharged to the atmosphere. Finally, the system shall be vacuumized. The step above
shall be repeated until all the re rigerants in the system are cleared. The OFN charged or the last time shall be discharged to
the atmosphere. A terwards, the system can be welded. The operation above is necessary in case o pipeline welding.
It shall be guaranteed that no alight ire source is around the outlet o the vacuum pump and the ventilation is avorable.
Favorable ventilation must be guaranteed in the maintenance area. A ter the maintenance machine is subject to the
vacuumizing above, the system re rigerant can be discharged on the outdoor unit side.
Be ore the outdoor unit is welded, it must be guaranteed that no re rigerant is inside the outdoor unit and the system
re rigerant has been discharged and cleared.
The re rigeration pipelines cannot be cut with a welding gun under any circumstance. The re rigeration pipelines must be
disassembled with a pipe cutter, and the disassembly must be carried out around a ventilation opening

Refrigerant Charging Procedures
Scra ing and Recovery
Recovery
11
The following requirements are added as the su lementation of conventional rocedures:
During the use o re rigerant charging tools, cross contamination o di erent re rigerants shall be avoided. The total length
(including the re rigerant pipelines) shall be shortened as much as possible, to reduce the residual o re rigerant inside;
The cylinders o re rigerant shall be kept upright;
Be ore re rigerant charging, the re rigeration system shall be earthed;
A label must be pasted on the re rigeration system a ter re rigerant charging;
Excessive charging is not allowed; the re rigerant shall be charged slowly;
In case system leakage is identi ied, re rigerant charging is not allowed unless the leak point is repaired;
During re rigerant charging, the charging amount shall be measured with an electronic scale or a spring scale. The connecting
hose between the re rigerant cylinder and the charging equipment shall be relaxed appropriately, to avoid impact on the
measuring accuracy due to stress.
Requirements on storage site of refrigerant
The cylinder o re rigerant shall be placed in a -10~50 environment with avorable ventilation, and warning labels shall be
pasted;
The maintenance tool in contact with the re rigerant shall be stored and used separately, and the maintenance tool o
di erent re rigerants cannot be mixed.
Scra ing
Be ore scrapping, the technician shall be completely amiliar with the equipment and all its eatures. The sa e recovery o
re rigerant is recommended. In case the re rigerant recovered needs to be reused, be ore which the sample o re rigerant and
oil shall be analyzed.
(1) The equipment and operation shall be well known;
(2) Power supply shall be switched o ;
(3) The ollowings shall be guaranteed be ore scrapping:
The mechanical equipment shall be convenient or operation on the cylinder o re rigerant (i necessary);
All personal protective equipment is available and being used correctly;
The whole course o recovery shall be guided by quali ied personnel;
The recovery equipment and cylinders shall be in line with corresponding standards.
(4) The re rigeration system shall be vacuumized i possible;
(5) In case the vacuum state cannot be reached, vacuumizing shall be carried out rom numerous positions, to pump the
re rigerant in each part o the system out;
(6) It shall be guaranteed that the capacity o cylinders is su icient be ore recovery;
(7) The recovery equipment shall be started and operated as per the operation instructions o the manu acturer;
(8) The cylinder cannot be charged too ull. (The re rigerant charged cannot exceed 80% o the capacity o cylinders)
(9) The maximum operating pressure o cylinders cannot be surpassed even only lasting or a short term;
(10) A ter re rigerant recovery is completed, the cylinder and equipment must be evacuated rapidly, and all the stop valves on
the equipment must be closed;
(11) Be ore puri ication and tests, the re rigerant recovered cannot be charged into another re rigeration system.
Note:
The air conditioner shall be marked (with dates and signature) after being scra ed and the refrigerant is discharged.
It shall be guaranteed that the sign on the air conditioner can reflect the flammable refrigerant charged inside.
During maintenance or scrapping, the re rigerant inside the re rigeration system needs to be cleared. It is recommended
that the re rigerant be cleared thoroughly.
The re rigerant can only be charged into a dedicated cylinder, the capacity o which shall match with the re rigerant amount
charged in the whole re rigeration system. All cylinders to be used are designated or the recovered re rigerant and labeled or
that re rigerant (Dedicated Cylinder or Re rigerant Recovery). The cylinders shall be equipped with pressure relie valves and
stop valves under avorable state. The empty cylinder shall be vacuumized be ore usage and be kept under normal temperature.
The recovery equipment shall always be under avorable working state, and be equipped with operation instructions, to
acilitate in ormation search. The recovery equipment shall be applicable to the recovery o lammable re rigerant. Moreover,
weighing apparatus under available state with measurement certi icates shall be equipped. In addition, removable attachment
joints ree rom leakage shall be used as the hose, and shall always be under avorable state. Whether the recovery equipment
is under avorable state and is properly maintained and whether all the electrical components are sealed shall be checked
be ore usage, to avoid ire or explosion in case o re rigerant leakage. I you have any question, please consult the manu acturer.
The re rigerant recovered shall be delivered back to the manu acturer in appropriate cylinders, with transporting instructions
being attached. Mixing o re rigerant in recovery equipment (especially the cylinders) is not allowed.
During transporting, the space in which the lammable re rigerant air conditioners are loaded cannot be sealed. Anti-
static measures shall be taken or the transporting vehicles. Meanwhile, during the transporting, loading and unloading o air
conditioners, necessary protective measures shall be taken, to protect the air conditioner rom being damaged.
During removal o the compressor or clearing o the compressor oil, it shall be guaranteed that the compressor is
vacuumized to a proper level, to ensure no residual lammable re rigerant is le t inside the lubricating oil. The vacuumizing
shall be completed be ore the compressor is delivered back to the manu acturer. The vacuumizing can only be accelerated by
heating the compressor housing through electrical heating. Sa ety shall be guaranteed when the oil is discharged rom the
system.disassembled with a pipe cutter, and the disassembly must be carried out around a ventilation opening

12
Be sure to con orm with the ollowing important Sa ety Precautions.
I any abnormal phenomena is ound
(e. g.smell o iring), please open the
window and well ventilated the room
immediately, then cut o the power supply immediately,
and contact the dealer to ind out the handling method.
In such case, to continue using the conditioner will damage
the conditioner, and may cause electrical shock, ire, or
explosion hazard.
Don't dismantle the outlet o the
outdoor unit.
The exposure o an is very dangerous
which may harm human beings.
A ter a long time use o air-conditioner,
the base should be checked or any
damages.
I the damaged base is not repaired, the
unit may all down and cause accidents.
When need maintenance and repairment,
call dealer to handle it.
Incorrect maintenance and repairment
may cause water leak, electrical shock,
ire, and explosion hazard.
Air-conditioner can't be installed in the environment with
in lammable gases because the in lammable gases near
air-conditioner may cause ire and explosion hazard.
Please let the dealer be responsible or installing the
conditioner. Incorrect installation may cause water leak,
electrical shock, ire, and explosion hazard.
Connect earthing wire.
Earthing wire should not be connected to the gas
pipe, water pipe, lightning rod or phone line,
incorrect earthing may cause shock.
Use drain pipe correctly to ensure e icient drainage.
Incorrect pipe use may cause water leaking.
Installed explosion-proo electrical-leaking circuit breaker.
It easily cause electrical shock without circuit breaker.
Call the dealer to take measures to prevent the re rigerant
rom leaking.
I conditioner is installed in a small room, be sure to take
every measure in order to prevent su ocation and explosion
accident even in case o re rigerant leakage.
When conditioner is installed or reinstalled, the dealer should
be responsible or them.
Incorrect installation may cause water leaking, electrical
shock, ire, and explosion hazard.
No goods or nobody is permitted to
placed on or stand on outdoor unit.The
alling o goods and people may cause
accidents.
Don't operate the air-conditioner with
damp hands.Otherwise it will be shocked.
Only use correctly-typed use.
May not use wire or any other materials
replacing use, otherwise it may cause
aults or ire accidents.
Earthing
switch o
WARNING
WARNING
A ter completing installation, test the unit to check or installation errors. Give the user adequate instructions concerning the
use and cleaning o the unit according to the Operation Manual.
Care ully read the ollowing in ormation in order to operate the air conditioner correctly.
The ollowing sa ety symbols are used throughout this manual:
:Indicates an action that must be avoided.
:Indicates that important instructions must be ollowed.
:Indicates a part which must be grounded.
:Beware o electric shock (This symbol is displayed on the main unit label.)
Below are listed three kinds o Sa ety Precautions and Suggestions.
Incorrect operations may result in severe consequences o death or serious injuries.
Incorrect operations may result in injuries or machine damages; in some cases may cause serious consequences.
INSTRUCTIONS: These in ormation can ensure the correct operation o the machine.
WARNING
CAUTION
!

Have the unit pro essionally installed.
Improper installation by an unquali ied person may result
in water leak, electric shock, ire, or explosion.
Be sure to care ully ollow each step in this handbook when
installing the unit.
Improper installation may result in water leak, electric shock,
smoke or ire.
Have all electrical work per ormed by a licensed electrician
according to the local regulations and the instructions given
in this manual. Secure a circuit designated exclusively to
the unit.
Improper installation or a lack o circuit capacity may cause
the unit to mal unction or present a risk o electric shock,
smoke,and ire.
Place the unit on a stable, level sur ace that withstands the
weight o the unit to prevent the unit rom tipping over or
alling causing injury as a result.
Only use speci ied cables or wiring. Securely connect each
cable, and make sure that the cables are not straining the
terminals.
Cables not connected securely and properly may generate
heat and cause ire and explosion.
Take necessary sa ety measures against typhoons and
earthquakes to prevent the unit rom alling over.
Do not make any changes or modi ications to the unit. In
case o problems, consult the dealer.
I repairs are not made properly, the unit may leak water
and present a risk o electric shock, or it may produce smoke
or cause ire and explosion.
Securely attach the terminal cover(panel) on the unit.
I installed improperly, dust and/or water may enter the unit
and present a risk o electric shock, smoke, ire, or explosion.
Only use re rigerant R32 as indicated on the unit when
installing or relocating the unit.
The use o any other re rigerant or an introduction o air into
the unit circuit may cause the unit to run an abnormal cycle
and abnormal cycle and cause the unit to burst.
In the event o a re rigerant gas leak, provide adequate
ventilation to the room.
I leaked re rigerant gas is exposed to a heat source, noxious
gases, ire or explosion will be caused.
Do not touch the ins on the heat exchanger with bare hands,
or they are sharp and dangerous.
Do not try to de eat the sa ety eatures o the devices, and
do not change the settings.
De eating the sa ety eatures on the unit such as the pressure
switch and temperature switch or using parts other than the
dealer or specialist may result in ire or explosion.
When installing the unit in a small room, sa eguard against
hypoxia that results rom leaked re rigerant reaching the
threshold level.
Consult the dealer or necessary measures to take.
When relocating the air conditioner, consult the dealer or
a specialist.
Improper installation may result in water leak, electric shock,
or ire.
A ter completing the service work, check or a re rigerant
gas leak.
I leaked gas re rigerant is exposed to a heat source such
as an heater,stove,and electric grill, noxious gases may
orm.
Only use speci ied parts.
Have the unit pro essionally installed. Improper installation
may cause water leak, electric shock,smoke, ire, explosion.
WARNING
WARNING
13

14
Precautions for Handling Units for Use with R32
Do not use the existing re rigerant piping
The old re rigerant and re rigerator oil in the existing piping
contain a large amount o chlorine, which will cause the
re rigerator oil in the new unit to deteriorate.
R32 is a high-pressure re rigerant, and the use o the
existing piping may result in bursting.
Keep the inner and outer sur aces o the pipes clean and
ree o contaminants such as sul ur, oxides, dust/dirt shaving
particles,oils,and moisture.
Contaminants inside the re rigerant piping will cause the
re rigerant oil to deteriorate.
Use a vacuum pump with a reverse- low check valve.
I other types o valves are used, the vacuum pump oil will
low back into the re rigerant cycle and cause the re rigerator
oil to deteriorate.
Do not use the ollowing tools that have been used with the
conventional re rigerants. Prepare tools that are or exclusive
use with R32.
(Gauge mani old, charging hose, gas leak detector,
reverse- low check valve, re rigerant charge base,vacuum
gauge, and re rigerant recovery equipment.)
I re rigerant and/or re rigerant oil le t on these tools are
mixed in with R32, or i water is mixed with R32, it will
cause the re rigerant to deteriorate.
Since R32 does not contain chlorine, gas-leak detectors
or conventional re rigerators will not work.
Store the piping to be used during installation indoors, and
keep both ends o the piping sealed until immediately be ore
brazing.(keep elbows and other joints wrapped in plastic.)
I dust, dirt, or water enters the re rigerant cycle, it may
cause the oil in the unit to deteriorate or may cause the
compressor to mal unction.
A large amount o mineral oil will cause the re rigerating
machine oil to deteriorate.
Use a small amount o ester oil, ether oil, or alkylbenzene
to coat lares and lange connections.
Use liquid re rigerant to charge the system.
Charge the unit with gas re rigerant will cause the re rigerant
in the cylinder to change its composition and will lead to
a drop in per ormance
Do not use a charging cylinder.
The use o charging cylinder will change the composition
o the re rigerant and lead to power loss.
Exercise special care when handling the tools.
An introduction o oreign objects such as dust, dirt or
water into the re rigerant cycle will cause the re rigerating
machine oil to deteriorate.
Only use R32 re rigerant.
The use o re rigerants containing chlorine(i.e. R22) will
cause the re rigerant to deteriorate.
Before Installing the Unit
Do not install the unit in a place where there is a possibility
o lammable gas leak.
Leaked gas accumulated around the unit may start a ire
or explosion.
Do not use the unit to preserve ood, animals, plants, arti acts,
or or other special purposes.
The unit is not designed to provide adepuate conditions
to preserve the quality o these items.
Do not use the unit in an unusual environment
The use o the unit in the presence o a large amount o
oil, steam, acid, alkaline solvents or special types o sprays
may lead to a remarkable drop in per ormance and/or
mal unction and presents a risk o electric shock, smoke,
ire, or explosion.
The presence o organic solvents, corroded gas (such as
ammonia,sul ur compounds,and acid may cause gas or
water leak.)
When installing the unit in a hospital, take necessary measures
against noise.
High- requency medical equipment may inter ere with the
normal operation o the air conditioning unit or the air
conditioning unit may inter ere with the normal operation
o the medical equipment
When humidity level exceeds 80% or when the drainage
system is clogged, indoor units may drip water.
Installation o a centralized drainage system or the outdoor
unit may also need to be considered to prevent water drips
rom the outdoor units.
Do not place the unit on or over things that may not get wet.
Caution
Caution
Caution

Before Installing (Relocating) the Unit or Performing Electric Work
Ground the unit.
Do not connect the grounding on the unit to gas pipes,water
pipes, lightning rods, or the grounding terminals o
telephones. Improper grounding presents a risk o electric
shock, smoke, ire, explosion, or the noise caused by
improper grounding may cause the unit to mal unction.
Before the Test Run
Do not operate switches with wet hands to avoid electric
shock. Allow or at least ive minutes be ore turning o the unit,
otherwise the unit may leak water or experience other
problems.
Do not turn o the power immediately a ter stopping the unit.
I the wires are too taut, they may break or generate heat
and/or smoke and cause ire or explosion.
Make sure the wires are not subject to tension.
Install a breaker or current leakage at the power source
to avoid the risk o electric shock.
Without a breaker or current leakage, there is a risk o
electric shock, smoke or ire.
Use breakers and uses (electrical current breaker, remote
switch<switch+Type-B use>,molded case circuit breaker)
with a proper current capacity.
The use o large-capacity uses, steel wire, or copper wire
may damage the unit or cause smoke or ire.
When installing draining pipes, ollow the instructions in the
manual, and make sure that they properly drain water so as
to avoid dew condensation.
I not installed properly, they may cause water leaks and
damage the urnishings.
Do not spray water on the air conditioners or immerse the
air conditioners in water.
Water on the unit presents a risk o electric shock.
Periodically check the plat orm on which is placed or damage
to prevent the unit rom alling.
I the unit is le t on a damaged plar orm, it may topple over,
causing injury.
Things such as nails may be included in the package.
Dispose o them properly to prevent injury.
Plastic bags present a choking hazard to children. Tear
up the plastic bags be ore disposing o them to prevent
accidents.
Properly dispose o the packing materials.
Do not touch the re rigerant pipes with bare hands during
and immediately a ter operation.
Depending on the state o the re rigerant in the system,
certain parts o the unit such as the pipes and compressor
may become very cold or hot and may subject the person
to rost bites or burning.
Do not operated the unit without panels and sa ety guards
in their proper places.
They are there to keep the users rom injury or accidentally
touching rotating, high-tempreture or high-voltage parts. Dust particles in the air may clog the system and cause
mal unction.
Do not operate the unit without air ilters.
Caution
Caution
When moving, to disassemble and re-install the air conditioning, please contact your dealer or technical support.
In the composition material o air conditioning, the content o lead, mercury, hexavalent chromium, polybrominated biphenyls and
polybrominated diphenyl ethers are not more than 0.1% (mass raction) and cadmium is not more than 0.01% (mass raction).
Please recycle the re rigerant be ore scrapping, moving, setting and repairing the air conditioning; or the air conditioning scrapping,
should be dealt with by the quali ied enterprises.
15
Move and scra the air conditioning

Read Before Installation
Tools/Materials Use Notes
Gauge Mani old Evacuating,re rigerant charging 5.09MPa on the High-pressure side.
Charging Hose Evacuating, re rigerant charging Hose diameter larger than the concentional ones.
Re rigerant Recovery Equipment Re rigerant recovery
Re rigerant Cylinder Re rigerant charging Write down the re rigerant type. Pink in color at the top o the cylinder.
Re rigerant Cylinder Charging Port Re rigerant charging Hose diameter larger than the conventional ones.
Flare Nut Connecting the unit to piping Use Type-2 Flare nuts.
Tools/Materials Use Notes
Gas leak detector Detection o gas leaks The ones or HFC type re rigerant may be used.
Vacuum Pump Vacuum drying May be used i a reverse low check adaptor is attached.
Re rigerant Recovery Equipment Recovery o re rigerant May be used i designed or use with R32
Flare Tool Flare machining o piping Chages have been made in the lare machining dimension.Re er to the next page.
Tools/Materials Use Notes
Vacuum Pump with a Check Valve Vacuum drying
Bender Bending pipes
Pipe Cutter Cutting pipes
Torque Wrench Tightening lare nuts Only 12.70 (1/2'') and 15.88(5/8'') have a larger lare machining dimension.
Welder and Nitrogen Cylinder Welding pipes
Re rigerant Charging Meter Re rigerant charging
Vacuum Gauze Checking vacuum degree
Tools/Materials Use Notes
Charging Cylinder Re rigerant Charging Must not be used with R32-type units.
CAUTION
Items to Be Checked
(1) Veri y the type o re rigerant used by the unit to be serviced. Re rigerant Type: R32
(2) Check the symptom exhibited by the unit to be serviced. Look in this service handbook or symptoms relating to the
re rigerant cycle.
(3) Be sure to care ully read the sa ety precautions at the beginning o this document.
(4) I there is a gas leak or i the remaining re rigerant is exposed to an open lame, a noxious gas hydro luoric acid may
orm. Keep workplace well ventilated.
Install new pipes immediately a ter removing old ones to keep moisture out o the re rigerant circuit.
Chloride in some types o re rigerants such as R22 will cause the re rigerating machine oil to deteriorate.
Necessary Tools and Materials
Prepare the ollowing tools and materials necessary or installing and servicing the unit.
Necessary tools or use with R32 (Adaptability o tools that are or use with R407C).
1. To be used exclusively with R32 ( Not to be used i used with R22 or R407C )
2. Tools and materials that may be used with R32 with some restrictions
3. Tools and materials that are used with R410A that can also be used with R32
4. Tool and materials that must not used with R32
Tools or R32 must be handled with special care, and keep moisture and dust rom entering the cycle.
16

17
Pressurize the equipment with nitrogen up to the design pressure and then judge the equipment's air tightness, taking
temperature variations into account.
When investigating leakage locations using a re rigerant, be sure to use R32.
Insure that R32 is in a liquid state when charging.
Use o oxygen as the pressurized gas may cause an explosion.
Charging with R32 gas will lead the composition o the remaining re rigerant in the cylinder to change and then this
re rigerant can not be used.
R32 leakage Test
No changes rom the conventional method. Note that a re rigerant leakage detector or R22 or R410A cannot detect R32
leakage.
Halide torch
NO
R22 or R407C leakage detector
NO
Items to be strictly observed :
Reasons:
Because R32 is a simulated azeotropic re rigerant, it can be handled in almost the same manner as a re rigerant such as
R410A. Howerver, i the re rigerant is removed in the vapor phase, the composition o the re rigerant in the cylinder will
somewhat change.
Remove the re rigerant in the liquid phase. Additional re rigerant may be added in case o a re rigerant leak.
Characteristics of the Conventional and the New Refrigerants
Required accuracy of the vacuum gauge
Use a vacuum gauge that can measure up to 650Pa. Do not use a general gauge mani old since it cannot measure a
vacuum o 650Pa.
Vacuuming
Vacuum um with check valve
A vacuum pump with a check valve is required to prevent the vacuum pump oil rom lowing back into the re rigerant
circuit when the vacuum pump power is turned o (power ailure). It is also possible to attach a check valve to the actual
vacuum pump a terwards.
Standard degree of vacuum for the vacuum um
Use a pump which reaches 65Pa or below a ter 5 minutes o operation.
In addition, be sure to use a vacuum pump that has been properly maintained and oiled using the speci ied oil. I the
vacuum pump is not properly maintained, the degree o vacuum may be too low.
Evacuating time
Evacuate the equipment or 1 hour a ter 650Pa has been reached.
A ter envacuating, leave the equipment or 1 hour and make sure the that vacuum is not lost.
O erating rocedure when the vacuum um is sto ed
In order to prevent a back low o the vacuum pump oil, open the relie valve on the vacuum pump side or loosen the
charge hose to drawn in air be ore stopping operation.The same operating procedure should be used when using a
vacuum pump with a check valve.
1.
2.
3.
4.
5.
1.
2.
3.
1.
2.
R32 is a pseudo-azeotropic re rigerant (boiling point R32= -52 C, R125= -49 C) and can roughly be handled in the same
way as R410A; however, be sure to ill the re rigerant rom the liquid side, or doing so rom the gas side will somewhat
change the composition o the re rigerant in the cylinder.
Charging Refrigerant
R must be in a liquid state when charging.
Reasons:
Note
In the case o a cylinder with a syphon, liquid R32 is charged without turning the cylinder up side down. Check the type
o cylinder be ore charging.
When re rigerant leaks, additional re rigerant may be charged. (Add the re rigerant rom the liquid side)
Remedies to be taken in case of a refrigerant leak

Accessories supplied with the outdoor unit:
Procedure for Selecting the Location
NOTE:
1) Choose a place solid enough to bear the weight and vibration o the unit, where the operation noise will not be ampli ied.
2) Choose a location where the hot air discharged rom the unit or the operation noise, will not cause a nuisance to the
neighbors o the user.
3) Avoid places near a bedroom and the like, so that the operation noise will cause no trouble.
4) There must be su icient space or carrying the unit into and out o the site.
5) There must be su icient space or air passage and no obstructions around the air inlet and the air outlet.
6) The site must be ree rom the possibility o lammable gas leakage in a nearby place.
Locate the unit so that the noise and the discharged hot air will not annoy the neighbors.
7) Install units, power cords and inter-unit cables at least 3048mm away rom television and radio sets. This is to prevent
inter erence to images and sounds. (Noises may be heard even i they are more than 3048mm away depending on radio
wave conditions.)
8) In coastal areas or other places with salty atmosphere o sul ate gas, corrosion may shorten the li e o the air conditioner.
9) Since drain lows out o the outdoor unit, do not place under the unit anything which must be kept away rom moisture.
10) On a lat sur ace that does not collect rain water.
11) Away rom strong wind.
12) Away rom direct exposure to rain or snow.
13) Away rom sea breeze.
14) Away rom in lammable materials.
15) Away rom high temperature or open lames.
1) Cannot be installed hanging rom ceiling or stacked.
2) I installing on a high place such as a roo , with a ence or guard rail around it.
3) I there is a potential or accumulated snow to block the air inlet or heat exchanger, install the unit on a higher base.
4) R32 re rigerant is an unsa e, nontoxic and lammable re rigerant. However, i there is a concern about a dangerous
level o re rigerant concentration in the case o re rigerant leakage, add extra ventilation.
5) Avoid installing the outdoor unit where corrosive gases, such as sul ur oxides, ammonia, and sul urous gas, are
produced. I unavoidable, consult with an installation specialist about using a corrosion-proo or anti-rust additive to protect
the unit coils.
18
Accessories
Drainage elbow 2
3
No.
1
2
Quantity
4
Name o parts
Rubber cushion
Clap
Drawing
3
5U125S2PN1FA
4
4
3

6) For seacoast applications, block the unit rom direct exposure to sea breeze by installing the unit behind a structure
(such as a building) or a protective wall that is 1.5 times higher than the unit, leaving 700 mm o space between the wall
and unit or air circulation.Consult an installation expert about taking anti-corrosion measures, such as removing salinity
on the heat exchanger and applying a rust inhibitor more requently than once a year.
ODU
ODU
ODU
ODU
Sea breeze
Sea breeze Sea breeze
Sea
Sea Sea
Protection walls
ODU
7) Set the unit on mounting brackets or pad. To avoid the adverse e ects o snow, ice and de rosting issues, install the
unit on heat pump risers to ensure a su icient height rom the ground. In all cases, re er to local code or correct riser
height.
Make sure the outdoor unit is installed level and is stable.
Install snow protection hood as necessary.
19
Procedure for Selecting the Location