Fujitsu ASTG30CMTA Installation Manual
INSTALLATION MANUAL
AIR CONDITIONER
Wall Mounted Type
PART No. 9387082036-03
Contents
R32
1.
SAFETY PRECAUTIONS .................................................................. 1
2.
ABOUT THIS PRODUCT................................................................... 3
3.
GENERAL SPECIFICATION ............................................................. 4
4.
ELECTRICAL REQUIREMENT ......................................................... 4
5.
SELECTING THE MOUNTING POSITION ....................................... 4
6.
INSTALLATION WORK ..................................................................... 4
7.
ELECTRICAL WIRING ..................................................................... 6
8.
FINISHING ........................................................................................ 7
9.
FRONT PANEL REMOVAL AND INSTALLATION ............................. 8
10. TEST RUN ......................................................................................... 8
11. REMOTE CONTROLLER INSTALLATION........................................ 8
12. OPTIONAL KIT INSTALLATION ....................................................... 9
R32.
13. INSTALLATION WORK (option) ...................................................... 10
14. SPECIAL INSTALLATION METHODS............................................. 10
For authorized service personnel only.
15. FUNCTION SETTING.......................................................................11
16. CUSTOMER GUIDANCE ................................................................ 12
1. SAFETY PRECAUTIONS
17. ERROR CODES .............................................................................. 13
• Be sure to read this manual thoroughly before installation.
• The warnings and precautions indicated in this manual contain important information
pertaining to your safety. Be sure to observe them.
• Hand this manual, together with the operating manual, to the customer. Request the
customer to keep them on hand for future use, such as for relocating or repairing the unit.
WARNING
Indicates a potentially or imminently hazardous situation
which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that may result in
minor or moderate injury or damage to property.
WARNING
• The appliance, outlet and inlet shall be installed, operated and stored in a room with a
floor area larger than X m2.
Minimum installation space
30 model
34 model
M (kg)
M ≤ 1.65
1.65 < M ≤ 2.05
2.05 < M ≤ 2.45
2.45 < M ≤ 2.85
X (m2)
2.60
4.01
5.72
7.74
M (kg)
2.85 < M ≤ 3.25
3.25 < M ≤ 3.65 3.65 < M ≤ 3.85
X (m²)
10.07
12.7
14.13
M (kg)
M ≤ 2.00
2.00 < M ≤ 2.45
2.45 < M ≤ 2.90
2.90 < M ≤ 3.35
X (m2)
3.81
5.72
8.02
10.70
M (kg) 3.35 < M ≤ 3.80 3.80 < M ≤ 4.03
X (m²)
13.77
15.45
M (kg): Amount of refrigerant charge
( IEC 60335-2-40 )
X (m2): Minimum room area
• Installation of this product must be done by experienced service technicians or professional installers only in accordance with this manual. Installation by non-professional
or improper installation of the product might cause serious accidents such as injury,
water leakage, electric shock, or fire. If the product is installed in disregard of the
instructions in this manual, it will void the manufacturer’s warranty.
• Do not turn on the power until all work has been completed. Turning on the power before the work is completed can cause serious accidents such as electric shock or fire.
• If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant
is exposed to a direct flame, it may produce a toxic gas.
• Installation must be performed in accordance with regulations, codes, or standards for
electrical wiring and equipment in each country, region, or the installation place.
• 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 flames, an operating gas appliance or an operating electric heater).
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odour.
CAUTION
• Read carefully all safety information written in this manual before you install or use the
air conditioner.
• Install the product by following local codes and regulations in force at the place of
installation, and the instructions provided by the manufacturer.
• This product is part of a set constituting an air conditioner. The product must not be
installed alone or be installed with non-authorized device by the manufacturer.
• Always use a separate power supply line protected by a circuit breaker operating on all
wires with a distance between contact of 3 mm for this product.
• To protect the persons, earth (ground) the product correctly, and use the power cable
combined with an Earth Leakage Circuit Breaker (ELCB).
CAUTION
• This product is not explosion proof, and therefore should not be installed in explosive
atmosphere.
• To avoid getting an electric shock, never touch the electrical components soon after
the power supply has been turned off. After turning off the power, always wait 5 minutes or more before you touch the electrical components.
• This product contains no user-serviceable parts. Always consult experienced service
technicians for repairing.
• When moving or relocating the air conditioner, consult experienced service technicians
for disconnection and reinstallation of the product.
• Do not place any other electrical products or household belongings under the product.
Condensation dripping from the product might get them wet, and may cause damage
or malfunction to the property.
• Be careful not to scratch the air conditioner when handling it.
• After installation, explain correct operation to the customer, using the operating manual.
Precautions for using R32 refrigerant
The basic installation work procedures are the same as conventional refrigerant (R410A,
R22) models.
However, pay careful attention to the following points:
Since the working pressure is 1.6 times higher than that of refrigerant R22 models,
some of the piping and installation and service tools are special. (See “2.1. Special
tools for R32 (R410A)”.)
Especially, when replacing a refrigerant R22 model with a new refrigerant R32 model,
always replace the conventional piping and flare nuts with the R32 and R410A piping and
flare nuts on the outdoor unit side.
For R32 and R410A, the same flare nut on the outdoor unit side and pipe can be used.
Models that use refrigerant R32 and R410A have a different charging port thread diameter to prevent erroneous charging with refrigerant R22 and for safety. Therefore, check
beforehand. [The charging port thread diameter for R32 and R410A is 1/2-20 UNF.]
Be more careful than R22 so that foreign matter (oil, water, etc.) does not enter the
piping. Also, when storing the piping, securely seal the opening by pinching, taping, etc.
(Handling of R32 is similar to R410A.)
CAUTION
1-Installation (Space)
• That the installation of pipe-work shall be kept to a minimum.
• That pipe-work shall be protected from physical damage.
• The appliance shall not be installed in an unventilated space, if that space is smaller
than X m2. (Refer to “1. SAFETY PRECAUTIONS, Minimum installation space”.)
• That compliance with national gas regulations shall be observed.
• That mechanical connections shall be accessible for maintenance purposes.
• In cases that require mechanical ventilation, ventilation openings shall be kept clear
of obstruction.
• When disposing of the product is used, be based on national regulations, properly
processed.
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CAUTION
2-Servicing
2-1 Service personnel
• Any person who is involved with working on or breaking into a refrigerant circuit
should hold a current valid certificate from an industry-accredited assessment
authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification.
• Servicing 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 flammable
refrigerants.
• Servicing shall be performed only as recommended by the manufacturer.
2-2 Work
• Prior to beginning work on systems containing flammable refrigerants, safety checks
are necessary to ensure that the risk of ignition is minimized. For repair to the refrigerating system, the precautions in 2-2 to 2-8 shall be complied with prior to conducting work on the system.
• Work shall be undertaken under a controlled procedure so as to minimize the risk of
a flammable gas or vapour being present while the work is being performed.
• All maintenance staff and others working in the local area shall be instructed on the
nature of work being carried out.
• Work in confined 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 control of flammable material.
2-3 Checking for presence of refrigerant
• The area shall be checked with an appropriate refrigerant detector prior to and during
work, to ensure the technician is aware of potentially flammable atmospheres.
• Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e. nonsparking, adequately sealed or intrinsically safe.
2-4 Presence of fire extinguisher
• If any hot work is to be conducted on the refrigeration equipment or any associated
parts, appropriate fire extinguishing equipment shall be available at hand.
• Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
2-5 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 flammable refrigerant shall
use any sources of ignition in such a manner that it may lead to the risk of fire or
explosion.
• All possible ignition sources, including cigarette smoking, should be kept sufficiently
far away from the site of installation, repairing, removing and disposal, during which
flammable refrigerant can possibly be released to the surrounding space.
• Prior to work taking place, the area around the equipment is to be surveyed to make
sure that there are no flammable hazards or ignition risks. “No Smoking” signs shall
be displayed.
2-6 Ventilated area
• Ensure that the area is in the open or that it is adequately ventilated before breaking
into the system or conducting any hot work.
• A degree of ventilation shall continue during the period that the work is carried out.
• The ventilation should safely disperse any released refrigerant and preferably expel
it externally into the atmosphere.
2-7 Checks to the refrigeration equipment
• Where electrical components are being changed, they shall be fit for the purpose
and to the correct specification.
• 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 flammable refrigerants.
- The charge size 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 being used, the secondary circuit shall be
checked for the presence of refrigerant.
- Marking to the equipment continues to be visible and legible. Markings and signs
that are illegible 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.
2-8 Checks to electrical devices
• Repair and maintenance to 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 dealt with.
• 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 there no live electrical components and wiring are exposed while charging,
recovering or purging the system.
- That there is continuity of earth bonding.
CAUTION
3-Repairs to sealed components
• During repairs to sealed components, all electrical supplies shall be disconnected
from the equipment being worked upon prior to any removal of sealed covers, etc.
• If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most
critical point to warn of 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 specification, damage to seals, incorrect fitting of glands, etc.
• Ensure that apparatus is mounted securely.
• Ensure that seals or sealing materials have not degraded such that they no longer
serve the purpose of preventing the ingress of flammable atmospheres.
• Replacement parts shall be in accordance with the manufacturer’s specifications.
NOTES: The use of silicon sealant 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.
4-Repair to 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 permitted for
the equipment in use.
• Intrinsically safe components are the only types that can be worked on while live in
the presence of a flammable atmosphere.
• The test apparatus shall be at the correct rating.
• Replace components only with parts specified by the manufacturer.
• Other parts may result in the ignition of refrigerant in the atmosphere from a leak.
5-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.
6-Detection of flammable refrigerants
• Under no circumstances shall potential sources of ignition be used in the searching
for or detection of refrigerant leaks.
• A halide torch (or any other detector using a naked flame) shall not be used.
7-Leak detection methods
• Electronic leak detectors shall be used to detect flammable 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 (25 % maximum) is confirmed.
• Leak detection fluids 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 flames shall be removed/extinguished.
• If a leakage of refrigerant is found which requires brazing, 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 then be purged through the system both before
and during the brazing process.
8-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 flammability 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 “flushed” 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 fill until the working pressure is achieved, then venting to atmosphere,
and finally pulling down to a vacuum.
• This process shall be repeated until no refrigerant is within the system.
• When the final OFN charge is used, the system shall be vented down to atmospheric
pressure to enable work to take place.
• 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.
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CAUTION
9-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 minimize 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 overfill the refrigeration system.
• Prior to recharging the system it shall be pressure 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.
10-Decommissioning
• Before carrying out this procedure, it is essential that the technician is completely
familiar with the equipment and all its details.
• It is recommended good practice that all refrigerants are recovered safely.
• Prior to the task being carried out, an oil and refrigerant sample shall be taken in
case analysis is required prior to re-use of reclaimed refrigerant.
• It is essential that electrical power is available before the task is commenced.
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, make a manifold so that refrigerant can be removed
from various parts of the system.
f) Make sure that cylinder is situated on the scales before recovery takes place.
g) Start the recovery machine and operate in accordance with manufacturer’s
instructions.
h) Do not overfill 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 filled 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.
11-Labelling
• Equipment shall be labelled stating that it has been de-commissioned and emptied
of refrigerant.
• The label shall be dated and signed.
• Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant.
12-Recovery
• When removing refrigerant from a system, either for servicing or decommissioning, it
is recommended good practice that all refrigerants are 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 are
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
occurs.
• The recovery equipment shall be in good working order with a set of instructions
concerning the equipment that is at hand and shall be suitable for the recovery of
flammable refrigerants.
• In addition, a set of calibrated weighing scales shall be available and in good working
order.
• 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 flammable 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.
Explanation of symbols displayed on the indoor unit or outdoor unit.
WARNING
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.
CAUTION
This symbol shows that the operation manual should be
read carefully.
CAUTION
This symbol shows that a service personnel should be
handling this equipment with reference to the installation
manual.
CAUTION
This symbol shows that information is available such as
the operating manual or installation manual.
2. ABOUT THIS PRODUCT
2.1. Special tools for R32 (R410A)
Tool name
Gauge manifold
Change from R22 to R32 (R410A)
Pressure is high and cannot be measured with a R22
gauge. To prevent erroneous mixing of other refrigerants,
the diameter of each port has been changed.
It is recommended to use gauge with seals -0.1 to 5.3 MPa
(-1 to 53 bar) for high pressure.
-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.
Charge hose
To increase pressure resistance, the hose material and base
size were changed. (R32/R410A)
Vacuum pump
A conventional vacuum pump can be used by installing a
vacuum pump adapter.
(Use of a vacuum pump with a series motor is prohibited.)
Gas leakage detector
Special gas leakage detector for HFC refrigerant R410A or
R32.
Copper pipes
It is necessary to use seamless copper pipes and it is desirable that the amount of residual
oil is less than 40 mg/10 m. Do not use copper pipes having a collapsed, deformed or
discolored portion (especially on the interior surface). Otherwise, the expansion value or
capillary tube may become blocked with contaminants.
As an air conditioner using R32 (R410A) incurs pressure higher than when using R22, it is
necessary to choose adequate materials.
WARNING
• Do not use the existing (for R22) piping and flare nuts.
If the existing materials are used, the pressure inside the refrigerant cycle will rise and
cause failure, injury, etc. (Use the special R32/R410A materials.)
• Use (refill or replace with) specified refrigerant (R32) only. Use of unspecified refrigerant can cause product malfunction, burst, or injury.
• Do not mix any gas or impurities except specified refrigerant (R32). Inflow of air or application of unspecified material makes the internal pressure of the refrigerant cycle too
high, and may cause product malfunction, burst of piping, or injury.
WARNING
• For appropriate working of the air conditioner, install it as written in this manual.
• To connect indoor unit and outdoor unit, use air conditioner piping and cables available
through your local distributor. This manual describes proper connections using such
installation set.
• Do not turn on the power until all work has been completed.
CAUTION
This manual describes how to install the indoor unit only. To install the outdoor unit, (if
any), refer to the installation manual included in each product.
• Be careful not to scratch the air conditioner when handling it.
• After installation, explain correct operation to the customer, using the operating manual.
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3.2. Additional materials required for installation
2.2. Accessories
The following installation accessories are supplied. Use them as required.
Name and Shape
Q’ty
Operating Manual
Name and Shape
Q’ty
Cloth tape
1
1
Installation Manual
(This manual)
4. ELECTRICAL REQUIREMENT
Tapping screw (Large)
1
8
Wall hook bracket
WARNING
2
Air cleaning filter
Remote controller
1
2
Battery
2
Conductor size [mm2]
Type
Remarks
Connection cable
1.5
Type 60245 IEC 57
3 cable + Earth (Ground),
1 Ø 240 V
5. SELECTING THE MOUNTING POSITION
Drain hose insulation
Decide the mounting position with the customer as follows:
1
1
The following items are necessary to install this air conditioner. (The items are not included with the air conditioner and must be purchased separately.)
Q’ty
1
1
1
1
1
Name
Wall cap
Saddle
Drain hose
Tapping screws
Sealant
Q’ty
1
1 set
1
1 set
1
2.3. Optional parts
5.1. Indoor unit
(1) Install the indoor unit level on a strong wall which is not subject to vibration.
(2) The inlet and outlet ports should not be obstructed : the air should be able to blow all
over the room.
(3) Install the unit a dedicated electrical branch circuit.
(4) Do not install the unit where it will be exposed to direct sunlight.
(5) Install the unit where connection to the outdoor unit is easy.
(6) Install the unit where the drain pipe can be easily installed.
(7) Take servicing, etc. into consideration and leave the spaces shown in “6.1. Installation
dimensions”. Also install the unit where the filter can be removed.
Correct initial installation location is important because it is difficult to move the unit after it
is installed.
WARNING
Refer to each installation manual for the method of installing optional parts.
Parts name
Cable
2
Remote controller holder
Connection pipe assembly
Connection cable (4-conductor)
Wall pipe
Decorative tape
Vinyl tape
Standard for electrical wiring and equipment differs in each country or region. Before you
start electrical working, confirm related regulations, codes, or standards.
Cable Length: Limit the voltage drop to less than 2%. Increase the cable diameter if voltage drop is 2% or more.
Filter holders
Wired Remote Controller *¹
Wired Remote Controller *²
Simple Remote Controller *¹
The indoor unit is powered from the outdoor unit. Do not power indoor unit from separate
power source.
Tapping screw (Small)
1
Name
A. Refrigeration (armored) tape
B. Insulated staples or clamps for connecting wire (See your local electrical codes.)
C. Putty
D. Refrigeration lubricant
E. Clamps or saddles to secure refrigerant piping
Model name
Application
UTY-RVNYN
UTY-RNRYZ
UTY-RSNYN
For air conditioner operation (3-wire type)
For air conditioner operation (2-wire type)
For air conditioner operation (3-wire type)
For the installation of wired remote
Communication kit
UTY-XWNX
controller (3-wire type)
For the installation of wired remote
Communication kit
UTY-TWRX
controller (2-wire type)
External connect kit
UTY-XWZX
For control input/output port
External input and output PCB *³ UTY-XCSXZ1 For connecting external devices
External input and output PCB box UTZ-GXXB
For the installation of optional parts
*1 Optional communication kit (UTY-XWNX) is necessary for the installation.
*2 Optional communication kit (UTY-TWRX) is necessary for the installation.
*3 Optional External input and output PCB box is necessary for the installation.
3. GENERAL SPECIFICATION
This installation manual briefly outlines where and how to install the air conditioning system. Please
read over the entire set of instructions for the indoor and outdoor units and make sure all accessory
parts listed are with the system before beginning.
3.1. Type of copper pipe and insulation material
CAUTION
Refer to the installation manual of the outdoor unit for description of the length of
connecting pipe or for difference of its elevation.
Gas pipe size (thickness) [mm]
Liquid pipe size (thickness) [mm]
Ø 15.88 (5/8 in.)
Ø 9.52 (3/8 in.)
CAUTION
• Wrap heat insulation around both of the gas pipe and the liquid pipe.
No heat-insulation work or incorrect heat-insulation work may cause water leaks.
• In a reverse cycle model, use heat insulation with heat resistance above 120 °C.
• If expected humidity of the installation location of refrigerant pipes is higher than
70 %, wrap the heat insulation around the refrigerant pipes.
If the expected humidity is between 70 % and 80 %, use heat insulation that has
thickness of 15 mm or more.
If the expected humidity is higher than 80 %, use heat insulation that has thickness
of 20 mm or more.
• Using of thinner heat insulation than specified above may cause a condensation on
the surface of the insulation.
• Use heat insulation with thermal conductivity of 0.045 W/(m•K) or less, at 20 °C.
Install the indoor unit where is capable to support the weight of the unit. Secure the
unit firmly so that the unit does not topple or fall.
CAUTION
Do not install the unit in the following areas:
• Area with high salt content, such as at the seaside. It will deteriorate metal parts, causing the parts to fail or the unit to leak water.
• Area filled with mineral oil or containing a large amount of splashed oil or steam, such
as a kitchen. It will deteriorate plastic parts, causing the parts to fail or the unit to leak
water.
• Area where is close to heat sources.
• Area that generates substances that adversely affect the equipment, such as sulfuric
gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed joints to corrode, which can cause refrigerant leakage.
• Area that can cause combustible gas to leak, contains suspended carbon fibers or
flammable dust, or volatile in flammables such as paint thinner or gasoline.
• If gas leaks and settles around the unit, it can cause a fire.
• Area where animals may urinate on the unit or ammonia may be generated.
• Do not use the unit for special purposes, such as storing food, raising animals, growing plants, or preserving precision devices or art objects. It can degrade the quality of
the preserved or stored objects.
• Install the unit where drainage does not cause any trouble.
• Install the indoor unit, outdoor unit, branch box, power supply cable, connection cable,
and remote control cable at least 1 m away from a television or radio receivers. The
purpose of this is to prevent TV reception interference or radio noise.
(Even if they are installed more than 1 m apart, you could still receive noise under
some signal conditions.)
• If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the unit.
• Install the indoor unit on the wall where the height from the floor is more than 1.8 m.
6. INSTALLATION WORK
WARNING
During transportation or relocation of the indoor unit, pipes shall be covered with the wall
hook bracket for protection. Do not move the appliance by holding the indoor unit pipes.
(The stress applied to the pipe joints may cause the flammable gas to leak during
operation.)
CAUTION
• Do not hit or push the human sensor. This may lead to damage or malfunction.
• Do not touch the human sensor. Any scratches or dirt may lead to incorrect detection.
• Do not place large objects near the human sensor. Also keep heating units outside the
sensor’s detection area.
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Detection range of the human sensor is as follows.
Vertical angle 90° (Side view)
Horizontal angle 100° (Top view)
6.4. Installing the wall hook bracket
(1) Install the wall hook bracket so that it is correctly positioned horizontally and vertically.
If the wall hook bracket is titled, water will drip to the floor.
(2) Install the wall hook bracket so that it is strong enough to support the weight of the unit.
7m
7m
90°
50°
• Fasten the wall hook bracket to the wall with 5 or more screws through the holes near
the outer edge of the bracket.
• Check that there is no rattle at the wall hook bracket.
50°
6.1. Installation dimensions
Wall hook bracket
88 mm or more
70 mm or more
140 mm
or more
Wall hook bracket
Tapping screw (large, accessories)
1.5 m or over
CAUTION
(Wall cap)
1.8 m or over
Remote
controller
The flare connection
part should be installed
outdoors.
6.5. Forming the drain hose and pipe
Remote
controller
holder
[Rear piping, Right piping, Bottom piping]
Tapping screw
(small, accessories)
• Install the indoor unit piping in the direction of the wall hole and bind the drain hose
and pipe together with vinyl tape.
• Install the piping so that the drain hose is at the bottom.
• Wrap the pipes of the indoor unit that are visible from the outside with decorative tape.
6.2. Indoor unit piping direction
[For Left rear piping (Drain hose), Left piping (Drain hose)]
The piping can be connected in the 3 directions indicated in the following.
When the piping is connected to direction (2) or (3) , cut along the piping groove on the
side of the front cover with a hacksaw.
(Rear)
(B) Right
outlet
Install the wall hook bracket both horizontally and vertically aligned.
Misaligned installation may cause water leakage.
Interchange the drain cap and the drain hose.
CAUTION
• Insert drain hose and drain cap securely. Drain should slope down to avoid water leakage.
• When inserting the drain hose, no other material than water should be applied.
Application of other material than water will cause deterioration of the hose, and may
cause water leakage.
• After you remove a drain hose, be sure to attach the drain cap.
• When you secure the piping and drain hose with tape, arrange the drain hose so that
it is at the bottom of the piping.
• For drain hose piping in low temperature environment, you need to apply freeze
protection to prevent a frozen drain hose.
After cooling operation is performed in low temperature environment, (when outdoor
temperature under 0 °C,) water in the drain hose could be frozen. Frozen drain water
will block the water flow in the hose, and may cause water leakage at the indoor unit.
(A) Rear
outlet
(C) Bottom
outlet
6.3. Cutting the hole in the wall for the connecting piping
(1)
(2)
(3)
(4)
Cut an 80 mm diameter hole in the wall at the position shown in the following.
Cut the hole so that the outside end is lower (5 to 10 mm) than the inside end.
Always align the center of the wall hole. If misaligned, water leakage will occur.
Cut the wall pipe to match the wall thickness, stick it into the wall cap, fasten the cap with
vinyl tape, and stick the pipe through the hole.
(5) Cut the hole a little lower so that drain water will flow freely.
Centering marks
Wall hook bracket
Installing the Drain cap
Use a hexagonal wrench 4 mm at opposite side to
insert the drain cap, till the drain cap contacts the tip
of the drain cock.
No gap
Hexagonal
wrench
Drain
cock
Drain cap
Lower
Right piping
80 mm hole
Bind with vinyl tape
Pipe (top)
Rear piping
10 mm
or more
Fasten with vinyl tape
Bottom piping
5~10 mm
For left outlet piping, cut
off the piping outlet cutting
groove with a hacksaw.
Wall cap
(Locally purchased) Wall pipe
(Locally purchased)
(Inside)
Wall
(Outside)
WARNING
Indoor unit drain hose
(bottom)
Indoor unit
drain hose
Remove the drain cap by pulling at the projection at the end
of the cap with pliers, etc.
Drain cap
Always use the wall pipe. If the wall pipe is not used, the cable that is connected between
the indoor unit and the outdoor unit may touch metal, and cause an electric discharge.
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[Installing the indoor unit]
6.6.3. Pipe connection
• Hang the indoor unit from the hooks at the top of the wall hook bracket.
• Insert the spacer, etc. between the indoor unit and the wall hook bracket and separate
the bottom of the indoor unit from the wall.
WARNING
The flare connection shall not be performed indoors.
Indoor unit
CAUTION
(Spacer)
Be sure to install the pipe against the port on the indoor unit correctly. If the centering
is improper, the flare nut cannot tighten smoothly. If the flare nut is forced to turn, the
threads will be damaged.
Wall hook bracket
Do not remove the flare nut from the indoor unit pipe until immediately before connecting the connection pipe.
Top hooks
Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order
to tighten the flare nut correctly.
Wall hook
bracket
Indoor
unit
Connect the piping so that the control box cover can easily be removed for servicing
when necessary.
In order to prevent water from leaking into the control box, make sure that the piping
is well insulated.
Bottom hooks
(Fitting)
Tighten the flare nuts with a torque wrench using the specified tightening method.
Otherwise, the flare nuts could break after a prolonged period, causing refrigerant to
leak and generate hazardous gas if the refrigerant comes into contact with a flame.
• After hooking the indoor unit to the top hook, hook the fittings of the indoor unit to the 2
bottom hooks while lowering the unit and pushing it against the wall.
6.6. Flare connection (Pipe connection)
When the flare nut is tightened properly by your hand, hold the body side coupling with a
wrench, then tighten with a torque wrench. (See the table below for the flare nut tightening
torques.)
Tighten with 2 wrenches.
CAUTION
Holding wrench
Tighten the flare nuts with a torque wrench using the specified tightening method.
Otherwise, the flare nuts could break after a prolonged period, causing refrigerant to leak
and generate hazardous gas if the refrigerant comes into contact with a flame.
Flare nut
Torque wrench
6.6.1. Flaring
Use special pipe cutter and flare tool designed for R410A or R32 pipework.
(1) Cut the connection pipe to the necessary length with a pipe cutter.
(2) Hold the pipe downward so that cuttings will not enter the pipe and remove any burrs.
(3) Insert the flare nut (always use the flare nut attached to the indoor unit(s) and outdoor
unit respectively) onto the pipe and perform the flare processing with a flare tool. Use
the special R410A or R32 flare tool, or the conventional flare tool. Leakage of refrigerant may result if other flare nuts are used.
(4) Protect the pipes by pinching them or with tape to prevent dust, dirt, or water from
entering the pipes.
Check if [L] is flared uniformly
and is not cracked or scratched.
B
Die
Tightening torque [N·m (kgf·cm)]
6.35 (1/4) dia.
9.52 (3/8) dia.
12.70 (1/2) dia.
15.88 (5/8) dia.
19.05 (3/4) dia.
16 to 18 (160 to 180)
32 to 42 (320 to 420)
49 to 61 (490 to 610)
63 to 75 (630 to 750)
90 to 110 (900 to 1,100)
CAUTION
Dimension A [mm]
Flare tool for R32,
clutch type
Dimension B [mm]
0 to 0.5
9.1
13.2
16.6
19.7
24.0
When using conventional flare tools to flare R32 pipes, the dimension A should be approximately 0.5 mm more than indicated in the table (for flaring with R32 flare tools) to achieve
the specified flaring. Use a thickness gauge to measure the dimension A.
Width across
flats
Flare nut [mm (in.)]
L
Pipe
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
15.88 (5/8)
19.05 (3/4)
Connection pipe
7. ELECTRICAL WIRING
A
Pipe outside diameter
[mm (in.)]
Indoor unit pipe
(Body side)
Pipe outside diameter [mm (in.)]
Width across flats
of Flare nut [mm]
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
15.88 (5/8)
19.05 (3/4)
17
22
26
29
36
6.6.2. Bending pipes
•
•
•
•
The pipes are shaped by your hands. Be careful not to collapse them.
Bend R70 mm or more with a pipe bender.
Do not bend the pipes in an angle more than 90°.
When pipes are repeatedly bend or stretched, the material will harden, making it difficult
to bend or stretch them anymore.
• Do not bend or stretch the pipes more than 3 times.
Be careful not to generate a spark as follows for using a flammable refrigerant.
• Do not remove the fuse while the power is on.
• Do not disconnect the wiring while the power is on.
• It is recommended to position the outlet connection in a high position. Place the
cords so that they do not get tangled.
7.1. Wiring system diagram
WARNING
• Before connecting the wires, make sure the power supply is OFF.
• Every wire must be connected firmly.
• No wire should be allowed to touch refrigerant tubing, the compressor, or any moving part.
• Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire
hazard may also exist. Therefore, be sure all wiring is tightly connected.
• Connect wires to the matching numbers of terminals.
INDOOR UNIT
TERMINAL
OUTDOOR UNIT
Power line
Control line
Please connect to the
specified terminal.
Earth (Ground) line
CAUTION
To prevent breaking of the pipe, avoid sharp bends.
If the pipe is bent repeatedly at the same place, it will break.
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(5) Do not overtighten the terminal screws. Otherwise, the screws may break.
7.2. Indoor unit wiring
Screw with special washer
(1) Open the intake grille. Remove the tapping screw for the wire cover and remove the
wire cover.
Screw with special washer
Ring terminal
Wire
Ring terminal
Terminal blocks
Wire
(6) See the table for the terminal screw tightening torques.
Tightening torque [N·m (kgf·cm)]
M4 screw
1.2 to 1.8 (12 to 18)
CAUTION
Screw
Wire cover
(2) Remove the tapping screw and while minding the cable clamp hook, remove the cable
clamp.
Screw
• Match the terminal block numbers and connection cable colors with those of the
outdoor unit or branch box. Incorrect wiring may cause a fire.
• Connect the connection cables firmly to the terminal block. Imperfect installation may
cause a fire.
• When fixing the connection cable with the cable clamp, always fasten the cable at the
plastic jacket portion, but not at the insulator portion. If the insulator is chafed, electric
leakage may occur.
• Always connect the earth (ground) wire. Improper earthing (grounding) work can
cause electric shocks.
• Do not use the earth (ground) screw for the indoor unit to the outdoor unit unless it is
specified.
8. FINISHING
Hook
Cable clamp
Cable clamp
(1) Insulate between pipes.
• Insulate suction and discharge pipes separately.
• For rear, right, and bottom piping, overlap the connection pipe heat insulation and
indoor unit pipe heat insulation and bind them with vinyl tape so that there is no gap.
(2) Temporarily fasten the connection cable along the connection pipe with vinyl tape.
(Wrap to about 1/3 the width of the tape from the bottom of the pipe so that water
does not enter.)
(3) Fasten the connection pipe to the outside wall with a saddle, etc.
(4) Fill the gap between the outside wall pipe hole and the pipe with sealer so that rain
water and wind cannot blow in.
(5) Fasten the drain hose to the outside wall, etc.
Outside wall cap*
(3) Connect the end of the connection cable fully into the terminal block.
Saddle*
Sealer putty*
1
2 3
(Outdoors)
Wall
*Locally purchased
Overlap the insulation
25 mm
65 mm
Pipe
Connection pipe
(heat insulation)
Bind the pipes together
so that there is no gap.
Indoor unit pipe
(heat insulation)
Vinyl tape
Pipe
Earth (ground) wire
Wrap with cloth tape
7.3. How to connect wiring to the terminals
Drain hose
Cloth tape
Caution when wiring cable
To strip off the insulation of a lead wire, always use a special tool such as a wire stripper. If there is no special tool, carefully strip off the insulation by using a knife or other
utensil.
Drain hose insulation is used
when the diameter of gas pipe is
Ø12.70 or more.
(1) Use ring terminals with insulating sleeves as shown in the figure to connect to the
terminal block.
(2) Securely clamp the ring terminals to the wires by using an appropriate tool so that the
wires do not come loose.
Strip : 10 mm
Ring terminal
Butt connection pipe (heat
insulation) against the indoor
unit pipe (heat insulation) and
wrap with drain hose insulation so that there is no gap.
Sleeve
(3) Connect specified wires securely, and fasten them so that there is no stress applied
on the terminals.
(4) Use a screwdriver with an appropriate bit size to tighten the terminal screws. Using of
screwdriver with inappropriate bit size will damage the screw heads, and the screws
will not be tightened properly.
Check the following:
GOOD
PROHIBITED
Drain hose
Saddle
Lifted up
Wave
End in water
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9. FRONT PANEL REMOVAL AND INSTALLATION
Intake grille removal
a
b
Intake grille installation
Open the intake
grille. While gently
pressing the left
and right mounting
shafts of the intake
grille outward “a”,
remove the intake
grille in direction of
the arrow “b”.
c
While holding the
grille horizontal, set
the left and right
mounting shafts into
the pillow blocks at
the top of the panel
“c”.
To latch each shaft
properly, insert the
shaft until it snaps.
Press 4 places on
the intake grille to
close it completely.
9.1. Front panel removal
(1)
(2)
(3)
(4)
10. TEST RUN
Check items
(1)
(2)
(3)
(4)
(5)
Is operation of each button on the remote control unit normal?
Does each lamp light normally?
Do airflow direction louvers operate normally?
Is the drain normal?
Do not have an abnormal noise and vibration during operation?
Do not operate the air conditioner in test run for a long time.
[Operation method]
Depending on your installation, choose from the following:
By the wireless remote controller (with “TEST RUN” button)
 To start test run, press the “START/STOP” button and the “TEST RUN” button on the
remote controller.
 To end test run, press the remote controller “START/STOP” button.
By the indoor unit or IR receiver unit
 To start test run, press the “MANUAL AUTO” button of the unit for more than 10 seconds
(forced cooling).
 To end test run, press the “MANUAL AUTO” button for more than 3 seconds or press
the remote controller “START/STOP” button.
Remove intake grille (refer to “Intake grille removal”.)
Remove 4 caps.
Remove wire cover.
Remove 10 screws.
Screws (Wire cover)
By the wired remote controller
 For the operation method, refer to the installation manual and the operating manual of
the wired remote controller.
Wire cover
The Operation indicator lamp and Timer indicator lamp will simultaneously flash during the
test run mode.
Heating test run will begin in a few minutes when HEAT is selected by the remote
controller [reverse cycle model only].
Screws (10 position)
11. REMOTE CONTROLLER INSTALLATION
Check that the indoor unit correctly receives the signal from the remote controller, then
install the remote controller holder.
Caps (4 position)
NOTES : When replacing the front panel, do not scratch or damage the louver.
(5) The front panel is pulled to the front, raising the upper surface, then the front panel is
removed.
CAUTION
Do not install the remote controller holder in the following conditions:
• Any places exposed in direct sunlight
• Positions affected by the heat from a stove or heater
11.1. Remote controller holder installation
Front panel
 Install the remote controller a maximum distance of 7 m from the remote control signal
receiver. After installing the remote controller, check that it operates correctly.
 Install the remote controller holder to a wall, pillar, etc. with the tapping screw.
Remote controller
holder fixing
Remote controller
mounting
Remote controller
holder
(1) Set
9.2. Front panel installation
(1) First, fit the lower part of the front panel, and insert top and middle hooks. (3 top
sides, 5 middles)
Tapping screw
(small, accessories)
Remote
controller
(2) Down
Top hooks
(3 position)
Top holes (3 position)
Front panel
Indoor unit
(2)
(3)
(4)
(5)
Middle hooks
(5 position)
Middle hooks
(5 position)
Attach the 10 screws.
Attach the wire cover.
Attach the 4 caps.
Attach the intake grille.
CAUTION
Install the front panel and intake grille securely. If installation is imperfect, the front
panel or intake grille may fall off and cause injury.
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● When function setting is “Operation/Stop” mode 2.
12.OPTIONAL KIT INSTALLATION
Input signal
The following optional kits can be connected to this product.
Command
OFF → ON
Operation
ON → OFF
Stop (R.C. disabled)
12.1.2. External output
CN12 (Communication kit)
CN2 (Ext. in)
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 25 m.
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• Output voltage: Hi DC12V±2V, Lo 0V.
• Permissible current: 50mA
Output select
CN3 (Ext. out)
Printed circuit board (PCB)
CN6 (External input and
output PCB)
Option type
Connector No.
Wired remote controller
*To communication kit
Simple remote controller
*To communication kit
Communication kit
CN12
External input and output PCB
CN6
External connect kit
CN2 (External in)
CN3 (External out)
● When interlocking with external device
PCB
Connector
Connected
device
(CN3)
Relay (Locally purchased)
or
● When displaying “Operation/Stop”
PCB
Resistor
Connector
(CN3)
LED
*Communication kit is necessary to install.
Connected device
CAUTION
• Before installing, be sure to disconnect all power supply.
• Do not touch the heat exchanger.
• When installing or removing parts of the air conditioner, be sure that the wire is not
caught by any parts or pulled hard. It may result in damage or malfunction of the air
conditioner.
Operation behavior
*If function setting “60” is set to “00”
Refer to “15 FUNCTION SETTING”.
12.1.3. Connection methods
Wire modification
12.1. External input and output
12.1.1. External input
• Indoor unit functions such as Operation/Stop or Forced stop can be done by using
indoor unit terminals.
• “Operation/Stop” mode or “Forced stop” mode can be selected with function setting of
indoor unit.
• A twisted pair cable (22 AWG) should be used. Maximum length of cable is 150 m.
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• The wire connection should be separate from the power cable line.
• Remove insulation from wire attached to wire kit connector.
• Remove insulation from locally purchased cable. Use crimp type insulated butt
connector to join field cable and wire kit wire.
• Connect the wire with connecting wire with solder.
IMPORTANT: Be sure to insulate the connection between the wires.
External connect kit (option)
Locally purchased
● Dry contact terminal
When a power supply is unnecessary at the input device you want to connect, use the Dry
contact terminal.
PCB
1
*1
2
3
Connector
(CN2)
Solder and insulate the connected parts.
12.2. Wired remote controller
DIP switch
Connected device
Print circuit board
(PCB)
*1: The switch can be used on the following condition: DC 12 V to 24 V, 1 mA to 15 mA.
3-wire type
2-wire type
Operation behavior
● Input signal type
ON
OFF
Edge
● When function setting is “Operation/Stop” mode 1.
Input signal
Command
OFF → ON
Operation
ON → OFF
Stop
White
Red
Remote
controller
cable
● When function setting is “Forced stop” mode.
Input signal
Black
White
Red
Command
OFF → ON
Forced stop
ON → OFF
Normal
* When the forced stop is triggered, indoor unit stops and Operation/Stop operation by a
remote controller is restricted.
Remote controller
Factory setting
“2 WIRE”
Disconnect the jumper (JM9).
Remote
controller
cable
Remote controller
Connecting
the Optional
parts
Set to “3 WIRE”
NOTES: Be sure to change the DIP SW to the corresponding remote controller.
When a 2-wire remote controller is connected to a “3WIRE” setting, power will
not be supplied.
When a 3-wire remote controller is connected to a “2WIRE” setting, a
communication error will be detected.
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(2) Open a hole in the front panel for the remote controller cable to pass through.
* Choose from 4 knockout holes marked on the inside of the front panel.
(3) Replace the front cover.
Refer to “9.2. Front panel installation”.
13. INSTALLATION WORK (option)
13.1. Front panel, control box cover removal
(1) Remove the front panel. (Refer to “9.1. Front panel removal”.)
(2) Remove 2 screws, then remove the control box cover.
Screw
14.SPECIAL INSTALLATION METHODS
Group control system
A number of indoor units can be operated at the same time using a single remote controller.
*When connecting different types of indoor units (such as wall mounted, cassette, duct, or
other types), some functions may be restricted.
(1)
Connect multiple indoor units in a system.
I.U.
Control box
cover
I.U.
B
A
I.U.
C
D
I.U.
E
Remote
controller
A, B, C, D, E : Remote controller cable.
A+B+C+D+E ≤ 500 m
Select the appropriate cable depending on the total wiring length.
Total wiring length of remote controller cable
(A+B+C+D+E)
Cross section of cable
500 m or less
0.3-1.25 mm2
Example of wiring method (2-wire type)
Screw
Indoor unit 1
Indoor unit 2
Indoor unit 3
Indoor unit 4
13.2. Installing the external connect kit
(1) Install the cable as shown in the following photograph.
Be sure to place the wiring under the tabs.
Remote
controller cable
Y1 Y2
Connector
CN2 or CN3
Remote controller
(2)
Set the R.C. address (Function setting)
(a)
2-wire type
Automatic setting:
• Addresses will be automatically set when initially starting up this unit. In such a case,
do not change the R.C. address of the indoor unit, and keep it at the initial setting (00).
• Connect up to 16 indoor units in a system.
Manual setting:
• Only set addresses manually when using different numbers for addresses.
Set the R.C. address of each indoor unit with the wireless remote controller.
Also set the R.C. address of the wired remote controller. For details, please refer
to the remote controller installation manual.
* In manual setting, connect up to 15 indoor units in a system.
* Do not use the R.C. address “00”.
Tabs
(b)
13.3. Installing the other optional parts
PCB or terminal block
for wired remote controller
3-wire type
Manual setting:
• Set the R.C. address of each indoor unit with the wireless remote controller.
• Set each R.C. address in sequence from “00”.
• Connect up to 16 indoor units in a system.
• Communication kit
Example of R.C. address setting (3-wire type)
• External input and output PCB*
• External input and output PCB box
* Optional External input and output PCB box is necessary for the installation.
Indoor unit 1
RC AD
00
Indoor unit 2
RC AD
01
Indoor unit 3
RC AD
02
Indoor unit 4
RC AD
03
Refer to each installation manual for the method of installing the other optional parts.
13.4. Front panel, control box cover replacement
Remote
controller
Reinstall by reversing the procedure in “13.1. Front panel, control box cover removal”.
(1) Replace the control box cover and screws.
Remote controller address setting
(♦... Factory setting)
Screw
Function
Number
Setting
Value
00
Screw
00
01
02 ~ 13
14
15
Setting Description
2-wire type: Setting prohibited
3-wire type: Unit no. 0
♦
Unit no. 1
Unit no. 2 ~ Unit no. 13
Unit no. 14
Unit no. 15
* Do not use the same setting value.
* After completing the Function Setting, be sure to disconnect the power supply and then reconnect it.
NOTES: Set the R.C. address by the wireless remote controller.
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Filter sign
15.FUNCTION SETTING
Perform the function setting according to the installation conditions using the remote
controller.
CAUTION
• Confirm whether the wiring work for outdoor unit has been finished.
• Confirm that the cover for the electrical enclosure on the outdoor unit is in place.
• This procedure changes to the function settings used to control the indoor unit
according to the installation conditions. Incorrect settings can cause the indoor unit to
malfunction.
• After the power is turned on, perform the function setting according to the installation
conditions using the remote controller.
• The settings may be selected between the following two: Function Number or Setting
Value.
• Settings will not be changed if invalid numbers or setting values are selected.
• Refer to the installation manual enclosed with the wired remote controller when the
wired remote controller (option) is used.
Select appropriate intervals for displaying the filter sign on the indoor unit according to the
estimated amount of dust in the air of the room.
If the indication is not required, select “No indication” (03).
(♦... Factory setting)
Function
Number
Setting Value
Setting Description
00
Standard (400 hours)
01
Long interval (1,000 hours)
02
Short interval (200 hours)
03
No indication
11
Room temperature control for indoor unit sensor
Depending on the installed environment, correction of the room temperature sensor may
be required. Select the appropriate control setting according to the installed environment.
The temperature correction values show the difference from the Standard setting “00”
(manufacturer’s recommended value).
(♦... Factory setting)
Entering the Function Setting Mode
While pressing the “POWERFUL” button and “TEMP.” (
the “RESET” button to enter the function setting mode.
♦
) button simultaneously, press
Function Number
Selecting the Function Number and Setting Value [Reverse cycle model]
) buttons to select the func- Function Number
(1) Press the “TEMP.” ( /
tion number. (Press the “10°C HEAT” button to switch
between the left and right digits.)
(2) Press the “POWERFUL” button to proceed to setting
value. (Press the “POWERFUL” button again to return
to the function number selection.)
(3) Press the “TEMP.” (
/
) buttons to select the setting value. (Press the “10°C HEAT” button to switch
between the left and right digits.)
Setting
Value
(4) Press the “MODE” button once to send the function setting information. Please
confirm the beeping sound.
) button once to fix the function setting.
(5) Next, please press START/STOP (
Please confirm the beeping sound.
30
31
(For cooling) (For heating)
Setting
Value
Setting Description
00
Standard setting
01
No correction 0.0 °C (0 °F)
02
-0.5 °C (-1 °F)
03
-1.0 °C (-2 °F)
04
-1.5 °C (-3 °F)
05
-2.0 °C (-4 °F)
06
-2.5 °C (-5 °F)
07
-3.0 °C (-6 °F)
08
-3.5 °C (-7 °F)
09
-4.0 °C (-8 °F)
10
+0.5 °C (+1 °F)
11
+1.0 °C (+2 °F)
12
+1.5 °C (+3 °F)
(6) Press the “RESET” button to cancel the function setting mode.
13
+2.0 °C (+4 °F)
(7) After completing the function setting, be sure to disconnect the power and reconnect it again.
14
+2.5 °C (+5 °F)
15
+3.0 °C (+6 °F)
16
+3.5 °C (+7 °F)
17
+4.0 °C (+8 °F)
Selecting the Function Number and Setting Value [Cooling model]
) buttons to select the func- Function Number
(1) Press the “TEMP.” ( /
tion number. (Press the “ECONOMY” button to switch
between the left and right digits.)
(2) Press the “POWERFUL” button to proceed to setting
value. (Press the “POWERFUL” button again to return
to the function number selection.)
(3) Press the “TEMP.” (
/
) buttons to select the setting value. (Press the “ECONOMY” button to switch
between the left and right digits.)
Setting
Value
(4) Press the “MODE” button once to send the function setting information. Please
confirm the beeping sound.
(5) Next, please press START/STOP (
) button once to fix the function setting.
Please confirm the beeping sound.
More
Cooling
Less
Heating
Less
Cooling
More
Heating
Room temperature control for wired remote controller sensor
Depending on the installed environment, correction of the wire remote temperature sensor
may be required. Select the appropriate control setting according to the installed environment.
To change this setting, set Function 42 to “Both” (01).
Ensure that the Thermo Sensor icon is displayed on the remote controller screen.
(♦... Factory setting)
Function Number
(6) Press the “RESET” button to cancel the function setting mode.
(7) After completing the function setting, be sure to disconnect the power and reconnect it again.
CAUTION
After disconnecting the power, wait 30 seconds or more before reconnect it again.
The function setting does not become active unless the power is disconnected then
reconnected.
♦
35
36
(For cooling) (For heating)
Setting
Value
Setting Description
00
No correction
01
No correction 0.0 °C (0 °F)
02
-0.5 °C (-1 °F)
03
-1.0 °C (-2 °F)
04
-1.5 °C (-3 °F)
05
-2.0 °C (-4 °F)
06
-2.5 °C (-5 °F)
07
-3.0 °C (-6 °F)
08
-3.5 °C (-7 °F)
09
-4.0 °C (-8 °F)
10
+0.5 °C (+1 °F)
11
+1.0 °C (+2 °F)
12
+1.5 °C (+3 °F)
13
+2.0 °C (+4 °F)
14
+2.5 °C (+5 °F)
15
+3.0 °C (+6 °F)
16
+3.5 °C (+7 °F)
17
+4.0 °C (+8 °F)
♦
More
Cooling
Less
Heating
Less
Cooling
More
Heating
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Auto restart
Switching functions for external output terminal
Enable or disable automatic restart after a power interruption.
Functions of the external output terminal can be switched.
(♦... Factory setting)
Function
Number
Setting Value
40
(♦... Factory setting)
Function
Number
Setting Description
00
Enable
01
Disable
Setting Value
Setting Description
00
Indoor unit
01
Both
♦
Setting record
Record any changes to the settings in the following table.
Setting Value
Setting Description
00
A
01
B
02
C
03
D
“Operation/Stop” mode or “Forced stop” mode can be selected.
Room temperature control for wired
remote controller sensor
Cooling
Heating
Heating
Auto restart
(♦... Factory setting)
Setting Description
00
Operation/Stop mode1
01
(Setting forbidden)
02
Forced stop mode
03
Operation/Stop mode 2
♦
Setting Description
00
Both
01
Wired remote controller
♦
Setting Description
00
Disable
01
Enable
02
Remote controller
When two or more air conditioners are installed in a room and the remote controller is
operating an air conditioner other than the one you wish to set, change the custom code
of the remote controller to operate only the air conditioner you wish to set (4 selections
possible).
(1) Press the START/STOP (
) button until only the clock
is displayed on the remote controller display.
(2) Press the “MODE” button for at least 5 seconds to display the current custom code (initially set to A).
(3) Press the “TEMP.” ( / ) buttons to change the custom code between A↔B↔C↔D .
Match the code on the display to the air conditioner
custom code.
(4) Press the “MODE” button again to return to the clock
display. The custom code will be changed.
• If no buttons are pressed within 30 seconds after the custom code is displayed, the
system returns to the original clock display. In this case, start again from step 1.
• The air conditioner custom code is set to A prior to shipment.
• Depending on the remote controller, the custom code may return to custom code A
when the batteries are replaced. In this case, if you use a code other than A, reset
the code after replacing the batteries. If you do not know the air conditioner custom
code setting, try each code (A→B→C→D) until you find the code which operates the
air conditioner.
16.CUSTOMER GUIDANCE
Enables or disables the power-saving function by controlling the indoor unit fan rotation
when the outdoor unit is stopped during cooling operation.
(♦... Factory setting)
Setting Value
Remote Controller Custom Code Setting
Use the following steps to select the custom code of the remote controller. (Note that the
air conditioner cannot receive a signal if the air conditioner has not been set for the matching custom code.)
Indoor unit fan control for energy saving for cooling
49
Cooling
After completing the function setting, be sure to disconnect the power and reconnect it again.
To use the temperature sensor on the wired remote controller only, change the setting to
“Wired remote controller” (01).
This function will only work if the function setting 42 is set at “Both” (01).
(♦... Factory setting)
Function
Number
Room temperature control for indoor
unit sensor
Switching functions for external output terminal
Room temperature sensor switching (Aux.)
48
Filter sign
Indoor unit fan control for energy saving for cooling
♦
Setting Value
Setting Value
Setting Value
Room temperature sensor switching (Aux.)
External input control
Function
Number
Indoor unit fan operation status
External input control
(Only for wireless remote controller)
The indoor unit custom code can be changed. Select the appropriate custom code.
(♦... Factory setting)
46
10
♦
Remote controller custom code
Remote controller custom code
Function
Number
Error status
Room temperature sensor switching
00: Sensor on the indoor unit is active.
01: Sensors on both indoor unit and wired remote controller are active.
* Remote controller sensor must be turned on by using the remote controller.
44
Operation status
09
Setting Description
(Only for wired remote controller)
When using the wired remote controller temperature sensor, change the setting to “Both”
(01).
(♦... Factory setting)
Function
Number
00
60
Room temperature sensor switching
42
Setting Description
♦
* Auto restart is an emergency function such as for power outage etc. Do not attempt to
use this function in normal operation. Be sure to operate the unit by remote controller or
external device.
Function
Number
Setting Value
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer, airflow
switching, and other remote control unit operations.
(2) Air filter removal and cleaning, and how to use the air louvers.
(3) Give the operating manual to the customer.
♦
00: When the outdoor unit is stopped, the indoor unit fan operates continuously following
the setting on the remote controller.
01: When the outdoor unit is stopped, the indoor unit fan operates intermittently at a very
low speed.
02: Enable or disable this function by remote controller setting.
* When using a wired remote controller without Indoor unit fan control for energy saving for
cooling function, or when connecting a single split converter, the setting cannot be made by
using the remote controller. Set to “00” or “01”.
To confirm if the remote controller has this function, refer to the operating manual of each
remote controller.
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17.ERROR CODES
If you use a wireless remote controller, the lamp on the photo detector unit will output error
codes by way of blinking patterns. If you use a wired remote controller, error codes will appear on the remote control display. See the lamp blinking patterns and error codes in the
table. An error display is displayed only during operation.
●(7)
●(6)
◊
●(7)
●(7)
◊
●(8)
●(2)
◊
●(8)
●(3)
◊
Serial communication error
●(8)
●(4)
◊
Wired remote controller
communication error
●(8)
●(6)
◊
●(9)
●(4)
◊
●(9)
●(5)
◊
Error display
Operation
lamp
(green)
Timer
lamp
(orange)
Economy
lamp
(green)
●(1)
●(1)
◊
●(1)
●(2)
◊
●(1)
●(5)
◊
●(1)
●(6)
◊
Peripheral unit transmission PCB
connection error
●(2)
●(1)
◊
Unit number or Refrigerant circuit
address setting error
[Simultaneous Multi]
●(9)
●(7)
◊
●(2)
●(2)
◊
Indoor unit capacity error
●(9)
●(9)
◊
●(2)
●(3)
◊
Combination error
●(10)
●(1)
◊
• Connection unit number error
(indoor secondary unit)
[Simultaneous Multi]
• Connection unit number error
(indoor unit or branch unit)
[Flexible Multi]
●(10)
●(3)
◊
●(10)
●(4)
◊
●(10)
●(5)
◊
●(13)
●(2)
◊
●(2)
●(4)
◊
Error code
Description
Check run unfinished
●(2)
●(6)
◊
Address setting error in wired
remote controller system
●(2)
●(7)
◊
Primary unit, secondary unit setup error [Simultaneous Multi]
Indoor unit PCB model
information error
●(3)
●(2)
◊
●(3)
●(5)
◊
●(4)
●(1)
◊
●(4)
●(2)
◊
●(5)
●(1)
◊
●(5)
●(3)
◊
Manual auto switch error
Display mode
• 2-way valve temp. sensor error
• 3-way valve temp. sensor error
Heat sink temp. sensor error
• Sub-cool Heat Ex. gas inlet
temp. sensor error
• Sub-cool Heat Ex. gas outlet
temp. sensor error
Liquid pipe temp. sensor error
Current sensor error
• Discharge pressure sensor error
• Suction pressure sensor error
• High pressure switch error
Trip detection
Compressor rotor position
detection error
Outdoor unit fan motor error
4-way valve error
Discharge temp. error
Compressor temp. error
High pressure error
Low pressure error
Branch boxes error
[Flexible Multi]
● : 0.5s On / 0.5s Off
◊ : 0.1s On / 0.1s Off
( ) : Number of flashing
[Troubleshooting with the indoor unit display]
Room temp. sensor error
Indoor unit Heat Ex. Middle temp.
sensor error
Indoor unit fan motor error
Drain pump error
Damper error
●(5)
●(7)
◊
●(5)
●(8)
◊
●(5)
●(15)
◊
●(6)
●(2)
◊
●(6)
●(3)
◊
●(6)
●(4)
◊
●(6)
●(5)
◊
●(6)
●(8)
◊
Outdoor unit rush current limiting
resister temp. rise error.
●(6)
●(10)
◊
Display PCB microcomputers
communication error
●(7)
●(1)
◊
●(7)
●(2)
◊
●(7)
●(3)
◊
●(7)
●(4)
◊
●(7)
●(5)
◊
Operation indicator lamp (green)
Timer indicator lamp (orange)
Economy indicator lamp (green)
Intake grille error
Indoor unit error
[Troubleshooting with the Wired Remote Controller Display (Option)]
If an error occurs, the following display will be shown. (“Er” will appear in the set room
temperature display.)
Outdoor unit main PCB model
information error or
communication error
Inverter error
Error code
Active filter error, PFC circuit error
Trip terminal L error
Discharge temp. sensor error
Compressor temp. sensor error
Outdoor unit Heat Ex. liquid temp.
sensor error
Outdoor temp. sensor error
Suction Gas temp. sensor error
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