Hitachi RPIL-3.0UFE1NH Instruction Manual

HO2019290HA
INDOOR UNITS
RPIL-3.0UFE1NH
RPIH-3.5UFE1NH
RPIH-4.0UFE1NH
RPIH-5.0UFE1NH
RPIH-6.0UFE1NH
RPIH-6.5UFE1NH
DUCTED UNIT
MONO SPLIT
DC-INVERTER SERIES

Contents
Safety Precautions .....................................................................................................................................1
Composition of the Air conditioner..............................................................................................................6
Operation Manual .......................................................................................................................................8
Special Remarks ..........................................................................................................................................8
Troubleshooting............................................................................................................................................8
Filter Cleaning ..............................................................................................................................................9
Installation and Maintenance....................................................................................................................10
1 Safety Notice ..........................................................................................................................................10
2 Tools and Instruments for Installation ..................................................................................................... 11
3 Installation of the Indoor Unit.................................................................................................................. 11
3.1 Initial Check ........................................................................................................................................................ 11
3.2 Installation........................................................................................................................................................... 12
4 Refrigerant Pipe......................................................................................................................................14
4.1 Pipe Material....................................................................................................................................................... 14
4.2 Piping Connection............................................................................................................................................... 14
5 Drain Piping ............................................................................................................................................15
6 Electrical Wiring......................................................................................................................................16
6.1 General Check.................................................................................................................................................... 16
6.2 Changing Static Pressure ................................................................................................................................... 17
6.3 Electrical Installation ........................................................................................................................................... 17
7 Test Run..................................................................................................................................................18

Caution Statements
Alert Symbols
!
DANGER The symbol refers to a hazard which can result in severe personal injury or
death.
!
WARNING The symbol refers to a hazard or an unsafe practice which may result in severe per-
sonal injury or death.
!
CAUTION The symbol refers to a hazard or an unsafe practice which may result in minor per-
sonal injury, product or property damage.
NOTE It refers to remarks and instructions to the operation, maintenance and service.
• Thisairconditionershouldbeinstalledproperlybyqualiedpersonnelinaccordancewiththeinstallationinstructions
providedwiththeunit.
• Beforeinstallation,checkifthevoltageofthepowersupplyatinstallationsiteisthesameasthevoltageshownon
the nameplate.
!
DANGER
• Do not perform any alteration to this product, otherwise, it may cause water
leakage,breakdown,shortcircuit,electricshock,re,etc.
• Piping, welding and other such works should be carried out far away from the
ammableandexplosivematerials,includingtheairconditionerrefrigerant,
to guarantee the security of the site.
• To protect the air conditioner from heavy corrosion, avoid installing the
outdoor unit in a place where sea water can splash directly onto or in
sulphurousairnearaspa.Donotinstalltheairconditionerwhereexcessively
high heat-generating objects are placed.
!
WARNING
• If the supply cord is damaged, it must be replaced by the factory or its service
department to avoid danger.
• The place where this product is installed must have the reliable electrical grounding
facilities and protections. Please do not connect the grounding of this product to
various kinds of air feeding ducts, drain pipes, lightning protection facilities as well
as other piping lines to avoid electric shock and damage caused by other factors.
• Wiringmustbedonebyaqualiedelectrician.Allthewiringoperationsmustbe
conducted according to the local electrical codes.
• You should consider the capacity of the electric current of your electrical meter and
socket before installation.
• The power wire where this product is installed should have the independent
leakage protection device and the electric current over-load protection device
provided for this product.
• This appliance can be used by children over 8 years old and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if
they have been given supervision or instruction concerning use of the appliance in
a safe way and understand the hazards involved. Children should be supervised
to ensure that they do not play with the appliance.
• Means for providing complete disconnection in all poles, must be incorporated in
thexedwiringinaccordancewiththewiringregulations.
• Read this manual carefully before using this air conditioner. If you still have any difculties or problems,
consult your dealer for help.
• The air conditioner is designed to provide you with comfortable room conditions. Use this unit only for its
intended purpose as described in this instruction manual.

Caution Statements
!
WARNING
• Neverusegasolineorotherammablegasneartheairconditionertoavoiddanger.
• Whenanyabnormalitylikeburntsmell,deformation,re,smoke,etc.isfound,you
should stop using the air conditioner, immediately cut off the main power supply
and contact the dealer.
!
CAUTION
• Do not turn the air conditioner on and off from the main power switch. Use the ON/
OFF operation button.
• Do not stick anything into the air inlet and air outlet of both the indoor and outdoor
units. This is dangerous because the fan is rotating at a high speed.
• Do not cool or heat the room too much if babies or invalids are present.
• Type and rating of circuit breakers / ELB are detailed below.
• The method of connection of the appliance to the electrical supply and
interconnection of separate components are detailed below.
• The wiring diagram with a clear indication of the connections and wiring to external
control devices and supply cord are detailed below. Power connection and
interconnection between outdoor unit and indoor unit should be conducted with
the power cord of the H07RN-F type or the electrically equivalent type. The size of
the power cord is detailed below.
• The information of dimensions of the space necessary for correct installation of the
appliance, including the minimum permissible distances to adjacent structures, is
detailed below.
• The range of external static pressures for ducted appliances is detailed below.
NOTE
• Storage condition: Temperature -25~60ºC
Humidity 30%~80%
• The numbers in the model represent the cooling capacity (HP).
• Forexample,3.0HPrepresentsRPIL-3.0UFE1NH.
• Heating and electric heating functions are not available for cooling only models.
• This manual should be considered as a permanent part of the air conditioner and should remain with it.

Safety Precautions
Precautions for using R32 refrigerant
The basic installation work procedures are the same as the conventional refrigerant (R22 or R410A).
However, pay attention to the following points:
!
WARNING
1 Transportation of equipment containing ammable refrigerants
Pay attention to the fact that additional transportation regulations may exist with respect to equipment containing ammable gas.
The maximum number of pieces of equipment or the conguration of the equipment permitted to be transported together will be
determined by the applicable transport regulations.
2 Equipment signs
Signs for similar appliances (containing ammable refrigerants) used in a work area are generally addressed by local regulations
and give the minimum requirements for the provision of safety and/or health signs for a work location. All required signs are to be
maintained and employers should ensure that employees receive suitable and sufcient instruction and training on the meaning
of appropriate safety signs and the actions that need to be taken in accordance with these signs.
The effectiveness of signs should not be diminished by too many signs being placed together. Any pictograms used should be as
simple as possible and contain only essential details.
3 Disposal of equipment containing ammable refrigerants
In compliance with national regulations.
4 Storage of equipment/appliances
The storage of equipment should be in accordance with the manufacturer's instructions.
5 Storage of packed (unsold) equipment
• Storage package protection should be constructed so that mechanical damage to the equipment inside the package will
not cause a leak of the refrigerant.
• The maximum number of pieces of equipment permitted to be stored together will be determined by local regulations.
6 Information on servicing
6.1. Checking the area
Prior to beginning work on systems containing ammable refrigerants, safety checks are necessary to ensure that the risk of
ignition is minimised. To repair the refrigerating system, the following precautions should be complied with prior to conducting
work on the system.
6.2. Work procedure
Work shall be undertaken following a controlled procedure so as to minimise the risk of ammable gas or vapour being
leaked while the work is being performed.
6.3. General working area
• All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out.
Work in conned spaces shall be avoided.
• The area around the workspace shall be sectioned off. Ensure that the conditions within the area have been made safe
by controlling ammable material.
6.4. Checking for leakage of refrigerant
• The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is
aware of potential ammable atmospheres.
• Ensure that the leak detection equipment being used is suitable for ammable refrigerants, i.e. non-sparking, adequately
sealed or intrinsically safe.
6.5. Fire extinguisher
• If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate re extinguishing
equipment shall be available.
• Have a dry powder or CO2 re extinguisher adjacent to the charging area.
SAFETY PRECAUTIONS
HO2019290HA
1
EN

6.6. No ignition sources
• No person carrying out work in relation to a refrigeration system which involves exposing any pipe work that contains or
has contained ammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of re
or explosion.
• All possible ignition sources, including cigarette smoking, should be kept sufciently far away from the site of installation,
repairing, removing and disposal, during which ammable refrigerant can possibly be released to the surrounding space.
• Prior to working, the area around the equipment should be checked to make sure that there are no ammable hazards or
ignition risks. “No Smoking” signs shall be displayed.
6.7. Ventilated area
• Ensure that the installation area outdoors or that it is adequately ventilated before dismantling the system or conducting
any hot work.
• Ventilation shall be kept during the period that the work is carried out.
• The ventilation should safely disperse any released refrigerant and preferably discharge it externally into the atmosphere.
6.8. Checking the refrigeration equipment
• Where electrical components are being changed, they shall be t for the purpose and the correct specication.
• At all times the manufacturer's maintenance and service guidelines shall be followed. If in doubt, consult the
manufacturer's technical department for assistance.
• The following checks shall be applied to installations using ammable refrigerants:
-The charge amount is in accordance with the room size within which the refrigerant containing parts are installed;
-The ventilation machinery and outlets are operating adequately and are not obstructed;
-If an indirect refrigerating circuit is used, the secondary circuit shall be checked for the leak of refrigerant;
-Marking of the equipment should be visible and legible. Illegible markings and signs shall be corrected;
-Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance
which may corrode refrigerant containing components, unless the components are constructed of materials which are
inherently resistant to being corroded or are suitably protected against being so corroded.
6.9. Checking electrical devices
• Repair and maintenance of electrical components shall include initial safety checks and component inspection
procedures.
• If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is
satisfactorily solved.
• If the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution
shall be used.
• This shall be reported to the owner of the equipment so all parties are advised.
• Initial safety checks shall include:
-That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;
-That no live electrical components and wiring are exposed while charging, recovering or purging the system;
-That there is continuity of earth bonding.
7 Repairing sealed components
• During repairs of sealed components, all electrical supplies shall be disconnected prior to any removal of sealed covers,
etc.
• If it is absolutely necessary to have an electrical supply for equipment during servicing, then a permanently operating form
of leak detection shall be located at the most critical point to warn a potentially hazardous situation.
• Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not
altered in such a way that the level of protection is affected.
• This shall include damage to cables, excessive number of connections, terminals not made to original specication,
damage to seals, incorrect tting of glands, etc.
• Ensure that the device is mounted securely.
• Ensure that seals or sealing materials have not degraded in such a manner that they no longer serve the purpose of
preventing the ingress of ammable atmospheres.
• Replacement parts shall be in accordance with the manufacturer's specications.
SAFETY PRECAUTIONS
HO2019290HA
2

NOTE: The use of silicone sealants may inhibit the effectiveness of some types of leak detection equipment. Intrinsically
safe components do not have to be isolated prior to working on them.
8 Repairing intrinsically safe components
• Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the
permissible voltage and current for the equipment in use.
• Intrinsically safe components are the only types that can work in the presence of a ammable atmosphere. The test
device shall be at the correct rating.
• Replace components only with parts specied by the manufacturer.
• Other parts may result in the ignition of refrigerant leaked in the atmosphere.
9 Cabling
• Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse
environmental effects.
• The check shall also take into account the effects of aging or continual vibration from sources such as compressors or
fans.
10 Detection of ammable refrigerants
• Under no circumstances shall potential sources of ignition be used in the searching or detection of refrigerant leaks.
• A halide torch (or any other detector using a naked ame) shall not be used.
11 Leak detection methods
The following leak detection methods are deemed acceptable for systems containing ammable refrigerants:
• Electronic leak detectors shall be used to detect ammable refrigerants, but the sensitivity may not be adequate, or may
need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.)
• Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used.
• Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the
refrigerant employed and the appropriate percentage of gas (maximum 25%) is conrmed.
• Leak detection uids are suitable for use with most refrigerants but the use of detergents containing chlorine shall be
avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work.
• If a leak is suspected, all naked ames shall be removed/ extinguished.
• If a leakage of refrigerant which requires brazing is found, all of the refrigerant shall be recovered from the system, or
isolated (by means of shut off valves) in a part of the system remote from the leak.
• Oxygen free nitrogen (OFN) shall be purged through the system both before and during the brazing process.
12 Removal and evacuation
• When breaking into the refrigerant circuit to make repairs – or for any other purpose - conventional procedures shall be
used.
• However, it is important that best practice is followed since ammability is a consideration.
• The following procedure shall be adhered to:
Remove refrigerant;
Purge the circuit with inert gas;
Evacuate;
Purge again with inert gas;
Open the circuit by cutting or brazing.
• The refrigerant charge shall be recovered into the correct recovery cylinders.
• The system shall be “ushed out” with OFN to render the unit safe.
• This process may need to be repeated several times.
• Compressed air or oxygen shall not be used for this task.
• Flushing shall be achieved by breaking the vacuum in the system with OFN and continuing to ll until the working
pressure is achieved, then venting to atmosphere, and nally pulling down to a vacuum.
• This process shall be repeated until no refrigerant is within the system. When the nal OFN charge is used, the system
shall be vented down to atmospheric pressure to enable working.
• This operation is absolutely vital if brazing operations on the pipe-work are to take place.
• Ensure that the outlet for the vacuum pump is not close to any ignition sources and there is ventilation available.
SAFETY PRECAUTIONS
HO2019290HA
3
EN

13 Charging procedures
• In addition to conventional charging procedures, the following requirements shall be followed:
-Ensure that contamination of different refrigerants does not occur when using charging equipment.
-Hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in them.
-Cylinders shall be kept upright.
-Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.
-Label the system when charging is complete (if not already).
-Extreme care shall be taken not to overll the refrigeration system.
-Prior to recharging the system pressure shall be tested with OFN.
• The system shall be leak tested on completion of charging but prior to commissioning.
• A follow up leak test shall be carried out prior to leaving the site.
14 Decommissioning
Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail.
It is recommended that all refrigerants are recovered safely.
Prior to the task, an oil and refrigerant sample shall be taken in case that an analysis is required prior to the re-use of recovered
refrigerant. It is essential that electrical power is available before the task.
a. Become familiar with the equipment and its operation.
b. Isolate system electrically.
c. Before attempting the procedure ensure that:
• Mechanical handling equipment is available, if required, for handling refrigerant cylinders;
• All personal protective equipment is available and being used correctly;
• The recovery process is supervised at all times by a competent person;
• Recovery equipment and cylinders conform to the appropriate standards.
d. Pump down refrigerant system, if possible.
e. If a vacuum is not possible, use the manifolds so that refrigerant can be removed from various parts of the system.
f. Make sure that cylinder is situated on the scales before recovery.
g. Start the recovery machine and operate in accordance with manufacturer's instructions.
h. Do not overll cylinders. (No more than 80 % volume liquid charge.)
i. Do not exceed the maximum working pressure of the cylinder, even temporarily.
j. When the cylinders have been lled correctly and the process completed, make sure that the cylinders and the equipment
are removed from site promptly and all isolation valves on the equipment are closed off.
k. Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.
15 Labelling
Equipment shall be labelled stating that it has been de-commissioned and empty of refrigerant.
The label shall be dated and signed.
Ensure that there are labels on the equipment stating the equipment contains ammable refrigerant.
16 Recovery
• When removing refrigerant from a system, either for servicing or decommissioning, it is recommended that all refrigerant
is removed safely.
• When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed.
• Ensure that the correct number of cylinders for holding the total system charge is available.
• All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders
for the recovery of refrigerant).
• Cylinders shall be complete with pressure relief valve and associated shut-off valves in good working order.
• Empty recovery cylinders are evacuated and, if possible, cooled before recovery.
• The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is
available and shall be suitable for the recovery of ammable refrigerants.
• In addition, a set of calibrated weighing scales shall be available and in good working order.
SAFETY PRECAUTIONS
HO2019290HA
4

• Hoses shall be complete with leak-free disconnect couplings and in good condition.
• Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that
any associated electrical components are sealed to prevent ignition in the event of a refrigerant release.
• Consult manufacturer if in doubt.
• The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant
Waste Transfer Note arranged.
• Do not mix refrigerants in recovery units and especially not in cylinders.
• If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to
make certain that ammable refrigerant does not remain within the lubricant.
• The evacuation process shall be carried out prior to returning the compressor to the suppliers.
• Only electric heating to the compressor body shall be employed to accelerate this process.
• When oil is drained from a system, it shall be carried out safely.
• Appliance shall be installed, operated and stored in a room with a oor area larger than X (X see below).
• The installation of pipe-work shall be kept to a room with a oor area larger than X (X see below).
• The pipe-work shall be compliant with national gas regulations.
• When moving or relocating the air conditioner, consult experienced service technicians for disconnection and
reinstallation of the unit.
• Do not place any other electrical products or household belongings under indoor unit or outdoor unit. Condensation
dripping from the unit might get them wet, and may cause damage or malfunction of your property.
• Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
• The appliance shall be stored in a room without continuously operating ignition sources (for example: open ames, an
operating gas appliance or an operating electric heater).
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odour.
• To keep ventilation openings clear of obstruction.
• The appliance shall be stored in a well-ventilated area where the room size meets requirements as specied for
operation.
• The appliance shall be stored in a room without continuously operating open ames (for example an operating gas
appliance) and ignition sources (for example an operating electric heater).
• Any person involved with a refrigerant circuit should hold a valid certicate from an industry-accredited assessment
authority, which authorises their competence to handle refrigerants safely in accordance with required specication.
• Service shall only be performed as recommended by the equipment manufacturer.
• Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of
the person competent in the use of ammable refrigerants.
• The appliance shall be installed and stored so as to prevent mechanical damage.
• Mechanical connectors used indoors shall comply with ISO 14903. When mechanical connectors are reused indoors,
sealing parts shall be renewed. When ared joints are reused indoors, the are part shall be re-fabricated.
• The installation of pipe-work shall be kept to a minimum.
• Mechanical connections shall be accessible for maintenance purposes.
Required minimum room area X (m2)
Model Installation height (m)
0.6 1.0 1.8 2.2
3.0HP 37.5 13.5 4.2 2.8
3.5HP 62.5 22.5 6.9 4.6
4.0HP 91.2 32.8 10.1 6.8
5.0HP 120.3 43.3 13.4 8.9
6.0HP 155.7 56.1 17.3 11.6
6.5HP 184.6 66.5 20.3 13.8
SAFETY PRECAUTIONS
HO2019290HA
5
EN

Explanation of symbols displayed on the indoor unit or outdoor unit
WARNING
This symbol shows that this appliance uses a ammable refrigerant.
If the refrigerant is leaked and exposed to an external ignition source, there is a
risk of re.
CAUTION This symbol shows that the operation manual should be read carefully.
CAUTION This symbol shows that a service personnel should handle this equipment with
reference to the installation manual.
CAUTION This symbol shows that information is available such as the operating manual or
installation manual.
Composition of the Air conditioner
Indoor unit
3.0HP 3.5HP~4.0HP
1
7
2
3
4
5
6
1
2
3
4
7
5
6
5.0HP~6.5HP
1
2
5
6
4
3
7
1 Air inlet
2 Electric box
3 Refrigerant pipe (Liquid)
4 Refrigerant pipe (Gas)
5 Drain pipe (Connect with pump)
6 Drain pipe
7 Air outlet
COMPOSITION OF THE AIR CONDITIONER
HO2019290HA
6

Remote Controller (Optional)
You can control the air conditioner with the wired controller or remote controller.
It is used for power ON/OFF, setting the operation mode, temperature, fan speed, etc.
There are different types of remote controllers that can be used.
Operation instruction will be further specied in remote controller’s manual.
Please read it carefully before using this appliance and keep it for future reference.
Wired controller Remote controller
+&:$1(:+
+&5$1(:+
NOTE: Theguresarebasedontheexternalviewsofthestandardmodel.
Consequently, the shape may differ for the air conditioner model you have selected.
COMPOSITION OF THE AIR CONDITIONER
HO2019290HA
7
EN

Operation Manual
Special Remarks
• 3-minute protection after compressor stop
To protect compressor, it will be off for at least 3 minutes once it is stopped.
• 5-minute protection
Compressor must run for at least 5 minutes once it is operated. During the 5 minutes, compressor will not stop even if the room
temperature reaches the set temperature unless you use remote controller to turn off the unit (all indoor units can be turned off
by user).
• Cooling operation
The fan of the indoor unit will never stop running in cooling operation. It continues to operate even if the compressor stops
working.
• Heating operation
Heating capacity depends on external factors like outdoor unit temperature. Heating capacity might decrease if outdoor ambient
temperature is too low.
• Anti-freezing function during cooling
When the air temperature from the indoor outlet is too low, the unit will run for some time in the ventilating mode, to avoid frost or
ice forming on the indoor heat exchanger.
• Cold air prevention
During several minutes after the heating mode is started, the fan of the indoor unit will not run until the heat exchanger of the
indoor unit reaches a certain temperature to prevent cold draft.
• Defrosting
When the outdoor temperature is too low, frost or ice may generate on the outdoor heat exchanger, affecting heating
performance. When this happens, the defrosting system of the air conditioner will operate. At the same time the fan in the indoor
unit stops (or runs at a very low speed in some cases) to prevent cold draft. After defrosting is over, the heating operation and
the fan speed resume.
• Blowing out the residual heating air
When stopping the air conditioner in normal operation, the fan motor will run with low speed for a while to blow out the residual
heating air.
• Auto restart from power break
When the power supply is recovered after power break, all presets are still effective and the air conditioner will run according to
the previous setting.
Troubleshooting
!
CAUTION
When drain water overows from the indoor unit, stop the operation and contact your dealer.
When you smell or see white smoke coming out of the unit, turn OFF the main power supply and contact your dealer.
1 If Trouble still exists
If the trouble still exists even after checking the following, contact your dealer and inform them of the following items.
(1) Unit Model Name
(2) Content of Trouble
2 No Operation
Check whether the SET TEMP is set at the correct temperature.
3 Not Cooling or Heating Properly
• Check for obstruction of air ow of outdoor or indoor units.
• Check if there are too many heating sources in the room.
• Check if the air lter is clogged with dust.
• Check if the doors or windows are open.
• Check if the temperature condition is within the operation range.
OPERATION MANUAL
HO2019290HA
8

4 This is Not Abnormal
• Odour from Indoor Unit
Unpleasant odour diffuses from indoor unit after a long period of shutdown. Clean the air lter and panels or allow a good
ventilation.
• Sound from Deforming Parts
When start or stop the system, a sound might be heard. However, this is due to thermal deformation of plastic parts. It is not
abnormal.
• Steam from Outdoor Heat Exchanger
During defrosting operation, ice on the outdoor heat exchanger melts resulting in steam.
• Dew on Air Panel
When the cooling operation continues for a long period of time under high humidity conditions, dew can form on the air panel.
• Refrigerant Flow Sound
While the system is being started or stopped, the refrigerant ow sound may be heard.
Filter Cleaning
!
CAUTION
Turn OFF the main power switch before taking lter out.
1 Take out the lter
Remove the xed screws of the lter and pull the lter down along the rail of the ange as indicated in the gure below.
Air inlet ange
Screws
Air lter
2 Clean the lter
Clean the air lter with a vacuum cleaner or clean water.
a. Use a vacuum cleaner with the air inlet side facing the nozzle of the vacuum.
b. Use clean water with the air inlet back side facing the faucet.
If there is more dirt on the air lter, please use a soft brush and neutral detergent to clean it and the dry the water and set it in
a cool place to dry.
!
CAUTION
• Do not use hot water with a temperature higher than 40ºC.
• Do not use light oil essence, diluent, powder or other similar solvents for cleaning.
• Air lter can remove dust or other particles in the air. If blocked, the performance of air conditioner will be greatly reduced. therefore,
during long-term use, always clean the air lter.
• If the indoor machine is installed in the place with a lot of air dust, the frequency of cleaning the air lter should be increased.
3 Reinstall the lter
Reinstall the air lter in the reverse order of the steps described above.
OPERATION MANUAL
HO2019290HA
9
EN

Installation and Maintenance
1 Safety Notice
!
WARNING
• Installation should be performed by qualied personnel. (Improper installation may cause water leakage, electrical shock or re.)
• Install the unit according to the instructions given in this manual. (Incomplete installation may cause water leakage, electrical shock
or re.)
• Be sure to use the supplied or specied installation parts. (Using other parts may cause unit looseness, water leakage, electrical
shock or re.)
• Install the air conditioner on a solid base that can support the unit weight. (An inadequate base or incomplete installation may
cause injury due to falling off from the base.)
• Electrical work should be carried out in accordance with the installation manual and the local and national electrical wiring rules or
code. (Insufcient capacity or incomplete electrical work may cause electrical shock or re.)
• Be sure to use a dedicated power circuit. (Never use the power supply shared by another appliance.)
• For wiring, use a cable long enough for the entire distance, and do not use an extension cord.
• Do not put other loads on the power supply, and please use a dedicated power circuit.
• Use the specied types of wires for electrical connections between the indoor and outdoor units. (Firmly clamp the interconnecting
wires so that the terminals receive no external stresses.)
• Incomplete connections or clamping may cause terminal overheating or re.
• After establishing connection between all the wires, x the cables to prevent undue force on the electrical covers or panels. (Install
covers over the wires, incomplete cover installation may cause terminal overheating, electrical shock or re.)
• When installing or relocating the system, be sure to keep the refrigerant circuit free from air (Air in the refrigerant circuit may cause
an abnormal pressure rise or rupture, resulting in injury.)
• If any refrigerant leakage occurs during the installation work, ventilate the room.
• After all installations are completed, make sure that there is no refrigerant leakage. (The refrigerant produces a toxic gas if exposed
to ames.)
• When carrying out piping connection, do not to let air substances other than the specied refrigerant get into refrigeration cycle.
(Otherwise, it will cause decreased performance, abnormal high pressure in the refrigeration cycle, explosion and injury.)
• Make sure that the installation has a proper earth connection. Do not ground the unit to a utility pipe, arrester, or telephone
grounding. Incomplete grounding may cause electrical shock. (A high surge current from lightning or other sources may cause
damage to the air conditioner.)
• An earth leakage circuit breaker may be required depending on the site condition to prevent electrical shock.
• Disconnect the power supply before wiring, piping, or checking the unit.
• When moving the indoor unit and outdoor unit, please be careful, and do not incline the outdoor unit over 45 degree. Pay attention
to the sharp edges of the air conditioner to avoid any injury.
• During remote controller installation, ensure that the length of the wire between the indoor unit and remote controller is within
40 meters.
.
!
CAUTION
• Do not install the air conditioner in a place where there is a danger of exposure to ammable gas leakage. (If the gas leaks and
builds up around the unit, it may catch re).
• Establish drain piping according to the instructions in this manual. (Inadequate piping may cause ooding).
• Tighten the are nut according to the specications with a torque wrench. (If the are nut is tightened beyond specied torque, the
are nut may crack after a long time and cause refrigerant leakage).
INSTALLATION AND MAINTENANCE
HO2019290HA
10

2 Tools and Instruments for Installation
Number Tool Number Tool
1 Standard screwdriver 8Knife or wire stripper
2 Vacuum pump 9 Leveler
3 Charge hose 10 Hammer
4 Pipe bender 11 Churn drill
5Adjustable wrench 12 Pipe expander
6 Pipe cutter 13 Inner hexagon spanner
7 Cross head screwdriver 14 Measuring tape
3 Installation of the Indoor Unit
!
CAUTION
During installation, do not damage the insulation material on the surface of the indoor unit.
3.1 Initial Check
!
CAUTION
• When moving the unit after unpacking, make sure to lift it by holding its lifting lugs. Do not exert any pressure on other parts,
especially on refrigerant piping, drain piping and ange parts.
• Wear protective equipment when installing the unit.
ı600
ı1000
ı1000
100140 600
600
Top view
1 Reserve necessary maintenance space
when the ceiling is not detachable.
2 The location of the maintenance port
should ensure removal of the electric box
cover and internal components is easy to
perform.
Electric control box
Maintenance space (□ ≥450)
H400ı
Maintenance space
(Unit: mm)
20 or more
Ceiling
Floor surface
(Length: mm)
300 or
more
2500 or more
3.0HP~4.0HP
Fig. 3.1.1
5.0HP~6.5HP
Fig. 3.1.2
INSTALLATION AND MAINTENANCE
HO2019290HA
11
EN

• Optimum air distribution must be ensured.
• The air path must not be blocked.
• Condensation has to drain properly.
• The ceiling must be strong enough to bear the weight of the
indoor unit.
• The false ceiling must not incline.
• Ensure sufcient clearance for maintenance and servicing.
(See Fig. 3.1.1, Fig. 3.1.2.)
• Piping between the indoor and outdoor units should be
within the allowable limits. (Refer to the installation manual
of the outdoor unit.)
• The indoor unit, outdoor unit, power supply wiring and
transmission wiring should be kept at least 1 meter away
from televisions and radio to prevent image interference
and noise in these electrical appliances. (Noise may be
generated depending on the conditions under which the
electric wave is generated, even if a one-meter distance is
maintained.)
• Do not install the indoor unit in a machinery room or kitchen
where vapor from oil or its mist ows to the indoor unit. The
oil will deposit on the heat exchanger, thereby reducing the
performance of the indoor unit, and may deform and, in the
worst case, break the plastic parts of the indoor unit.
• Use suspension bolts to install the unit and check whether
the ceiling is strong enough to support the weight of the
unit. If there is a risk that the ceiling is not strong enough,
reinforce the ceiling before installing the unit. For bottom
intake (5.0HP~6.5HP), replace the chamber lid and the
intake-side ange in the procedure listed in the gures
below.
1 Remove the intake-side ange, then remove the chamber
lid. Refer to Fig. 3.1.3 for directions.
2 Reattach the removed chamber lid in the orientation shown
in Fig. 3.1.4.
Intake-side ange
Chamber lid
Filter (invalid for some models)
Fig. 3.1.3
Chamber lid
Intake-side ange
Filter (invalid for some models)
Fig. 3.1.4
3.2 Installation
3.2.1 Suspension bolts
1 Consider the pipe direction, wiring and maintenance
carefully, and choose the proper direction and location for
installation.
2 Install the suspension bolts as shown in Fig. 3.2.1 below.
gg
g
For concrete For steel beam
For wooden beam
(W3/8 or M10)
Suspension
bolts
Concrete
150 to160mm
Screw in
(100 to150kg)
Steel
bar
Wood rib
(60mm to 90mm)
Wooden beam
“I” shaped steel
beam
Suspension bolts
(W3/8 or M10)
Nut Round washer
Nut
Suspension bolts
Square washer
Fig. 3.2.1 Fixing the suspension bolts
3.2.2 Position of the suspension bolts and pipes
1 Mark the positions of suspension bolts, refrigerant pipes and
drain pipes.
2 The dimensions are shown below.
Air outlet
Air inlet
(Unit:mm)
Model abc d
3.0HP 1231 1180 375 447
3.5/4.0HP 1177 1140 666 720
5.0/6.0/6.5HP 1334 1300 756 800
Fig. 3.3 Suspension bolts
INSTALLATION AND MAINTENANCE
HO2019290HA
12

3.2.3 Installation of the indoor unit
The installation of the indoor unit is shown in Fig. 3.4.
Suspension bolts (4-M10 or W3/8)
( Field supplied )
Nuts and washers
(4-M10 or W3/8)
( Field supplied )
Fig. 3.4 Installation of the indoor unit
1 Fix the suspension bolts and the nuts as shown in Fig. 3.5.
Nuts are xed by four bolts.
Indoor unit
Nut
Approx 50mm
Washer
Double nut
Fig. 3.5 Suspension bolts and nuts
2 Install the indoor unit
• As shown in the following gure, place the left hanger
bracket on the nuts and washers of the suspension bolts.
• Make sure that the left hanger bracket has been xed on the
nuts and washers securely. Install the right hanger bracket
suspension hook on the nuts and washers.
(When installing the indoor unit, you can slightly loosen the
suspension bolts.)
Hanger bracket
Double nuts and
washers
Suspension bolt
Rack
Indoor unit
Fig. 3.6
3.2.4 Adjusting of the unit level
1 Check to ensure that the foundation is at, taking into
account the maximum foundation gradient.
2 The unit should be installed that the drainage side is slightly
(0mm~5mm) lower than other sides for adequate drainage.
5
mm
Fig. 3.7
3 After the adjustment, tighten the nuts and smear the thread
locker on the suspension to prevent the nuts from loosening.
!
CAUTION
1 During the installation, please cover the unit with the plastic cloth
to keep it clean.
2 Make sure that the unit is installed levelled by using a level or a
plastic tube lled with water in instead of a level. Adjust the top
surface of the unit to the surface of the water at both ends of the
plastic tube and adjust the unit horizontally. (One thing to watch
out for in particular is if it is installed so that the slope is not in the
direction of the drain piping, as this might cause leakage.)
3.2.5 Installation of the duct
!
CAUTION
• Make sure that the external static pressure of the unit is within range.
• Connect the duct and intake-side ange.
• Connect the duct and outlet-side ange.
• The connection of indoor unit and air duct must be well sealed and
kept warm with insulation material.
<Example>
Static pressure box Canvas duct Canvas duct Static pressure box
Insulation material
Ducted
unit Service mouth
Air-outlet
The valve for the amount of air
(600mm·x 600mm)
Air inlet (with lter)
Outside air
(through
the lter)
The valve for the
amount of air
INSTALLATION AND MAINTENANCE
HO2019290HA
13
EN

4 Refrigerant Pipe
!
DANGER
Usetherefrigerantaccordingtooutdoornameplate.Whencarrying
out the leakage check and test, do not mix in the oxygen, the
acetylene and the ammable and the reactive gas, because these
gasesmayresultinexplosion.Itissuggested tousecompressed
air,nitrogenorrefrigeranttoperformtheseexperiments.
4.1 Pipe Material
1 Prepare the copper pipe on site.
2 Choose dustless, non-humid, clean copper pipe. Before
installing the pipe, use nitrogen or dry air to blow away the
dust and impurities on the pipe.
3 Choose the copper pipe according to Fig. 4.2.
4.2 Piping Connection
1 The connection positions of the pipe are shown in Fig. 4.1.
166
129
220
97
86
35
Refrigerant
liquid pipe
Refrigerant
gas pipe
Drain pipe (for drain pump)
Drain pipe
(Unit: mm)
3.0HP
268
24
2
1
67
113
89
410
207
129
375
Drain pipe (for drain pump)
Refrigerant
gas pipe
Refrigerant
liquid pipe
Drain pipe
3.5HP~4.0HP
237
312
375
400
2
5
18
6
2
42
Refrigerant
gas pipe
Refrigerant
liquid pipe
Drain pipe (for drain pump)
Drain pipe
5.0HP~6.5HP
Fig. 4.1 Connection positions of the pipe
Model Gas Pipe (mm) Liquid Pipe (mm)
3.0/3.5HP ∅15.88 ∅9.52
4.0/5.0/6.0/6.5HP ∅19.05 ∅9.52
Fig. 4.2 Pipe diameter
2 As shown in Fig. 4.3, tighten the nuts with 2 spanners.
Pipe size Torque (Nm)
∅6.35mm 20
∅9.52mm 40
∅12.7mm 60
∅15.88mm 80
∅19.05mm 100
Fig. 4.3 Tightening torque for the nut
3 After nishing connecting the refrigerant pipes, keep it warm
with insulation material.
Insulation
(eld supplied)
Insulation (attached)
Refrigerant pipe
(eld supplied)
Clamp (attached)
Side of the
indoor unit
Fig. 4.4 Piping insulation procedure
!
CAUTION
• The pipe goes through the hole with the sealing material.
• Do not place the pipes directly on the oor.
Correct Incorrect
Protected with the
tape or plug.
INSTALLATION AND MAINTENANCE
HO2019290HA
14