Fujitsu ASGG24CLCA-B Installation Manual

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12 Pages


Fujitsu ASGG24CLCA-B Installation Manual | Manualzz



Wall Mounted type


For authorized service personnel only.


1. SAFETY PRECAUTIONS ...................................................................2

2. ABOUT THIS PRODUCT....................................................................4

2.1. Special tools for R32 (R410A) ..................................................4

2.2. Accessories ..............................................................................4

3. GENERAL SPECIFICATION ..............................................................5

3.1. Type of copper pipe and insulation material..............................5

4. ELECTRICAL REQUIREMENT ..........................................................5

5. SELECTING THE MOUNTING POSITION ........................................5

6. INSTALLATION WORK ......................................................................5

6.1. Installation dimensions .............................................................5

6.2. Indoor unit piping direction .......................................................5

6.3. Cutting the hole in the wall for connecting the pipes ................6

6.4. Installing the wall hook bracket.................................................6

6.5. Forming the drain hose and pipe ..............................................6

6.6. Pipe connection ........................................................................6

7. ELECTRICAL WIRING ......................................................................7

7.1. Wiring system diagram ................................................................ 7

7.2. Indoor unit wiring ......................................................................... 7

7.3. How to connect wiring to the terminals .....................................8

8. FINISHING .........................................................................................8

9. REMOVING AND REPLACING PARTS .............................................8

9.1. Intake grille removal and installation ........................................8

9.2. Front panel / control cover removal and installation .................8

10. TEST RUN .......................................................................................9

11. REMOTE CONTROLLER INSTALLATION ......................................9

11.1. Remote controller holder installation ......................................9

12. FUNCTION SETTING ......................................................................9

12.1. Function Details ......................................................................9

13. CUSTOMER GUIDANCE ...............................................................10

14. ERROR CODES .............................................................................10

PART NO. 9383195006


• 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.


Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury.


Indicates a potentially hazardous situation that may result in minor or moderate injury or damage to property.


• 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 fi re. 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 fi re.

• If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant is exposed to a direct fl ame, 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.

• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

• To avoid danger of suffocation, keep the plastic bag or thin fi lm used as the packaging material away from young children.

• The appliance shall be stored in a room without continuously operating ignition sources (for example: open fl ames, an operating gas appliance or an operating electric heater).

• Do not pierce or burn.

• Be aware that refrigerants may not contain an odour.


• 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 a device not authorized 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).

• This product is not explosion proof, and therefore should not be installed in an 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 touch the aluminum fi ns of heat exchanger built-in the indoor or outdoor unit to avoid personal injury when you install or maintain the unit.

• 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.

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 fl are nuts on the outdoor unit side.

For R32 and R410A, the same fl are 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.)


1-Installation (Space)

• That the installation of pipe-work shall be kept to a minimum.

• That pipe-work shall be protected from physical damage.

• 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.


2-1 Service personnel

• Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certi fi cate from an industry-accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment speci fi cation.

• 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 fl ammable refrigerants.

• Servicing shall be performed only as recommended by the manufacturer.

2-2 Work

• Prior to beginning work on systems containing fl ammable 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 fl ammable 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 con fi 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 control of fl ammable 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 fl ammable atmospheres.

• Ensure that the leak detection equipment being used is suitable for use with fl ammable refrigerants, i.e. nonsparking, adequately sealed or intrinsically safe.

2-4 Presence of fi re extinguisher

• If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fi re extinguishing equipment shall be available at hand.

• Have a dry powder or CO

2 fi re 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 fl ammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of fi re or explosion.

• All possible ignition sources, including cigarette smoking, should be kept suf fi ciently far away from the site of installation, repairing, removing and disposal, during which fl ammable 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 fl ammable 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 fi t for the purpose and to the correct speci fi 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 fl ammable 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.

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 speci fi cation, damage to seals, incorrect fi tting 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 fl ammable atmospheres.

• Replacement parts shall be in accordance with the manufacturer’s speci fi cations.

NOTE: 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 fl ammable atmosphere.

• The test apparatus shall be at the correct rating.

• Replace components only with parts speci fi ed by the manufacturer.

• Other parts may result in the ignition of refrigerant in the atmosphere from a leak.


• 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 fl ammable 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 fl ame) shall not be used.


7-Leak detection methods

• Electronic leak detectors shall be used to detect fl 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 (25 % maximum) is con fi rmed.

• Leak detection fl 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 fl ames 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 fl 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 “ fl ushed” 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 fi ll until the working pressure is achieved, then venting to atmosphere, and fi nally pulling down to a vacuum.

• This process shall be repeated until no refrigerant is within the system.

• When the fi nal 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.

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 over fi ll 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.


• 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 over fi 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 fi 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.




• 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 fl ammable refrigerant.


• 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 fl ammable 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 fl 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.

Explanation of symbols displayed on the indoor unit or outdoor unit.



This symbol shows that this appliance uses a fl ammable refrigerant.

If the refrigerant is leaked and exposed to an external ignition source, there is a risk of fi re.

This symbol shows that the operation manual should be read carefully.



This symbol shows that a service personnel should be handling this equipment with reference to the installation manual.

This symbol shows that information is available such as the operating manual or installation manual.


• Do not use the existing (for R22) piping and fl are 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 (re fi ll or replace with) speci fi ed refrigerant (R32) only. Use of unspeci fi ed refrigerant can cause product malfunction, burst, or injury.

• Do not mix any gas or impurities except speci fi ed refrigerant (R32). In fl ow of air or application of unspeci fi ed material makes the internal pressure of the refrigerant cycle too high, and may cause product malfunction, burst of piping, or injury.

• For installation purposes, be sure to use the parts supplied by the manufacturer or other prescribed parts. The use of non-prescribed parts can cause serious accidents such as the unit falling, water leakage, electric shock, or fi re.

• Do not turn on the power until all work has been completed.


This manual describes how to install the indoor unit only. To install the outdoor unit or branch box, (if any), refer to the installation manual included in each product.

2.2. Accessories

The following installation accessories are supplied. Use them as required.

Name and Shape

Operating Manual

Q’ty Name and Shape

Cloth tape




Installation Manual

(This manual)

Tapping screws (large)

1 5

Remote controller Tapping screws (small)

1 2



Remote controller holder Wall hook bracket

1 1


2.1. Special tools for R32 (R410A)

Tool name

Gauge manifold

Charge hose

Vacuum pump

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.

To increase pressure resistance, the hose material and base size were changed. (R32/R410A)

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


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.

The following items are necessary to install this air conditioner. (The items are not included with the air conditioner and must be purchased separately.)

Additional materials

Wall cap Connection pipe assembly

Connection cable (4-conductor)

Wall pipe

Decorative tape

Vinyl tape


Drain hose

Tapping screws




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


Refer to the installation manual for the outdoor unit for description of allowable pipe length and height difference.

Capacity of indoor unit



Gas pipe size

(thickness) [mm]

Ø 9.52(0.8)

Ø 12.70(0.8)

Liquid pipe size

(thickness) [mm]

Ø 6.35(0.8)

Ø 6.35(0.8)


• Wrap heat insulation around both gas pipe and 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 a thickness of 15 mm or more.

If the expected humidity is higher than 80 %, use heat insulation that has a thickness of 20 mm or more.

• The use of thinner heat insulation than speci fi ed 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.


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 fi lled 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 fi bers or fl ammable dust, or volatile in fl ammables such as paint thinner or gasoline.

• If gas leaks and settles around the unit, it can cause a fi re.

• 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, power supply cable, transmission 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 fl oor is more than 1.8 m.


The indoor unit is powered from the outdoor unit. Do not power indoor unit from separate power source.


Standard for electrical wiring and equipment differs in each country or region. Before you start electrical working, con fi rm related regulations, codes, or standards.


Connection cable

Conductor size [


mm 2

] Type

Type 60245 IEC 57


3 cable + Earth (Ground),

1 Ø 230 V

Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop is

2% or more.


Decide the mounting position with the customer as follows:

(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.

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 fi lter can be removed.

Correct initial installation location is important because it is dif fi cult to move the unit after it is installed.


Install the indoor unit where is capable to support the weight of the unit. Secure the unit fi rmly so that the unit does not topple or fall.



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 fl ammable gas to leak during operation.)

6.1. Installation dimensions

83 mm or more

70 mm or more

1500 mm or more

1800 mm or more

Remote controller

Wall hook bracket

(Wall cap)

Remote controller holder

Tapping screw


85 mm or more

6.2. Indoor unit piping direction

The piping can be connected in the 6 directions indicated. When the piping is connected in direction 2 , 3 , 4 or 5 cut along the piping groove in the side of the front cover with a hacksaw.


5 Left outlet

2 Right outlet

1 Right rear outlet

3 Right bottom outlet

4 Left bottom outlet

6 Left rear outlet


6.3. Cutting the hole in the wall for connecting the pipes

(1) Cut a 65 mm diameter hole in the wall at the position shown in the following.

(2) Cut the hole so that the outside end is lower (5 to 10 mm) than the inside end.

(3) Always align the center of the wall hole. If misaligned, water leakage will occur.

(4) 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) For left piping and right piping, cut the hole a little lower so that drain water will fl ow freely.

Wall hook bracket Center mark

[Rear piping, Right piping, Bottom piping]

• 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.

65 mm dia. hole

Fasten with vinyl tape *

65 mm dia. hole

5~10 mm

Right piping

Pipe (top) Rear piping

Bottom piping

Indoor unit drain hose (bottom)

Bind with vinyl tape

[For Left rear piping, Left piping]

Interchange the drain cap and the drain hose.

Drain cap

Remove the drain cap by pulling at the projection at the end of the cap with pliers, etc.

Wall cap * Wall pipe *

(Inside) Wall (Outside)

* Locally purchased


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.

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 fl oor.

(2) Install the wall hook bracket so that it is strong enough to withstand the weight of an adult.

• 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.

Wall hook bracket

For left outlet piping, cut off the piping outlet cutting groove with a hacksaw.

Indoor unit drain hose


Insert the drain hose and drain cap into the drain port, making sure that it comes in contact with the back of the drain port, and then mount it. If the drain hose is not connected properly, leaking will occur.

[Installing the indoor unit]

• 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.

Top hooks

Indoor unit


Tapping screw


Install the wall-hook bracket both horizontally and vertically aligned.

Misaligned installation may cause water leakage.

6.5. Forming the drain hose and pipe


• 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 fl ow in the hose, and may cause water leakage at the indoor unit.

Bottom hooks

Wall hook bracket

Bottom hooks

• After hooking the indoor unit to the top hook, hook the fi ttings of the indoor unit to the bottom hooks while lowering the unit and pushing it against the wall.

6.6. Pipe connection


Tighten the flare nuts with a torque wrench using the specified tightening method.

Otherwise, the fl are nuts could break after a prolonged period, causing refrigerant to leak and generate hazardous gas if the refrigerant comes into contact with a fl ame.

6.6.1. Flaring

Use special pipe cutter and fl are 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.

the fl are nut attached to the indoor unit(s) and outdoor unit or branch box respectively) onto the pipe and perform the fl are processing with a fl are tool. Use the special R410A or R32 fl are tool, or the conventional fl are tool. Leakage of refrigerant may result if other fl are 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.






Pipe outside diameter

[mm (in.)]

Dimension A [mm]

Flare tool for R32, clutch type

Dimension B [mm]

6.35 (1/4)

9.52 (3/8)

12.70 (1/2)

15.88 (5/8)

19.05 (3/4)

0 to 0.5






When using conventional fl are tools to fl are R32 pipes, the dimension A should be approximately 0.5 mm more than indicated in the table (for fl aring with R32 fl are tools) to achieve the speci fi ed fl aring. Use a thickness gauge to measure the dimension A.

Width across flats

Pipe outside diameter [mm (in.)]

6.35 (1/4)

9.52 (3/8)

12.70 (1/2)

15.88 (5/8)

19.05 (3/4)

Width across flats of Flare nut [mm]






6.6.2. Bending pipes


• To prevent breaking of the pipe, avoid sharp bends.

• If the pipe is bent repeatedly at the same place, it will break.

• 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 dif fi cult to bend or stretch them anymore.

• Do not bend or stretch the pipes more than 3 times.

• When bending the pipe, do not bend it as is. The pipe will be collapsed. In this case, cut the insulating pipe with a sharp cutter as shown on the right, and bend it after


Pipe exposing the pipe. After bending the pipe as you want, be sure to put the heat insulating pipe back on the pipe, and secure it with tape.



Cut line



• Before connecting the wires, make sure the power supply is OFF.

• Every wire must be connected fi rmly.

• 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 fi re hazard may also exist. Therefore, be sure all wiring is tightly connected.

• Connect wires to the matching numbers of terminals.


Be careful not to generate a spark as follows for using a fl ammable 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



Type 60245 IEC57

Cable size 1.5 mm


(Inter-unit) Power line


Control line Please connect to the speci


ed terminal.

Earth (Ground) line

7.2. Indoor unit wiring

(1) Remove the intake grille. (Refer to “9.1. Intake grille removal and installation”.)

(2) Remove the tapping screw for the wire cover and the wire cover. (Wire covers A and B come off together.)

6.6.3. Flare connection


The fl are connection shall not be performed indoors.


• Be sure to install the pipe against the port on the indoor unit correctly. If the centering is improper, the fl are nut cannot be tightened smoothly. If the fl are nut is forced to turn, the threads will be damaged.

• Do not remove the fl are nut from the indoor unit pipe until immediately before connecting the connection pipe.

• Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order to tighten the fl are nut correctly.

• Tighten the fl are nuts with a torque wrench using the speci fi ed tightening method.

Otherwise, the fl are nuts could break after a prolonged period, causing refrigerant to leak and generate hazardous gas if the refrigerant comes into contact with a fl ame.

• 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.

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 following table for the flare nut tightening torques.)

Tighten with 2 wrenches.

Holding wrench

Torque wrench

Flare nut

Wire cover

Cable clamp



Connection cable

Connection cable

(3) Remove the tapping screw and while minding the cable clamp hook, remove the cable clamp.

Cable clamp

Connection cable


Indoor unit pipe

(Body side)

Flare nut [mm (in.)]

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.

Connection pipe

Tightening torque [N·m (kgf·cm)]

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)

Do not remove the cap from the connection pipe before connecting the pipe.

Insert the tab into the square hole of the indoor unit and fasten with a screw.


7.3. How to connect wiring to the terminals

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.

(1) Use ring terminals with insulating sleeves as shown in the fi gure 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


Drain hose


Lifted up


Wave End in water


9.1. Intake grille removal and installation

Intake grille removal

(1) Open the intake grille.

(2) Pull down the knob.

(3) Lift the intake grille upward, until the axle at the top of the intake grille is removed.


(3) Connect fi the terminals.

ed wires securely, and fasten them so that there is no stress applied on

(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.

(5) Do not overtighten the terminal screws. Otherwise, the screws may break.

Screw with special washer

Screw with special washer


Ring terminal

Ring terminal

Terminal blocks


(6) See the table for the terminal screw tightening torques.

M4 screw

Tightening torque [N·m (kgf·cm)]

1.2 to 1.8 (12 to 18)


• Match the terminal block numbers and connection cable colors with those of the outdoor unit. Incorrect wiring may cause a fi re.

• Connect the connection cables fi rmly to the terminal block. Imperfect installation may cause a fi re.

• When fi xing 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 speci fi ed.


(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.

(6) Check the drainage.

Outside wall cap*


Sealer putty*

Intake grille installation

(2) Lay down the intake grille.


Intake grille

Mounting shaft


Front panel


9.2. Front panel / control cover removal and installation

* In this description, the intake grille and wire cover already has been removed.

9.2.1. Front panel / control cover / under cover removal

Remove the 4 screws.

The front panel is pulled to the front, raising the upper surface, and a front panel is removed.


(2 position)


Wire cover

Front panel

Front panel

Intake grille

9.2.2. Front panel / control cover / under cover installation

(1) fi t the lower part of the front panel, and insert top and bottom hooks. (3 top sides, 6 bottom sides)

(2) 3 screws is attached.

(3) The wire cover is attached.

(4) The intake grille is attached.

Bottom hooks

(6 position)


Pipe Wall

Overlap the insulation

Connection pipe

(heat insulation)

Bind the pipes together so that there is no gap.


*Locally purchased

Indoor unit pipe

(heat insulation)

Vinyl tape*

Drain hose

Wrap with cloth tape.

Cloth tape (accessory)


Bottom holes

(6 position)

Top holes

(3 position)

Front panel

Top hooks

(3 position)


Center Bottom hooks

(2 position)

Center hooks

(2 position)

Front panel



Please take caution when removing or installing the front panel. If the front panel falls, there is a risk of injury.


Check items

(1) Is operation of each button on the remote control unit normal?

(2) Does each lamp light normally?

(4) Is the drain normal?

(5) 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]

Before starting the test run, wait for 1 minute after connecting the power supply.

By the wireless remote controller

 To start the test run, press the “START/STOP( )” button, the “TEST RUN” button on the remote controller by using the tip of a ballpoint pen or other small object.

By the indoor unit

 To start the test run, keep on pressing the indoor unit button for more than 10 seconds.

 To end test operation, press the remote controller “START/STOP( )” button.

(When the air conditioner is running by pressing the “TEST RUN” button, the

“OPERATION” Lamp and “TIMER” Lamp will simultaneously fl ash slowly.)


Check that the indoor unit correctly receives the signal from the remote controller, then install the remote controller holder.


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

 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



Tapping screws

(small, accessories)

Remote controller

Entering the Function Setting Mode

While pressing the POWERFUL button and SET TEMP. ( ) simultaneously, press the

RESET button to enter the function setting mode.


Setting the Remote controller Custom Code

Use the following steps to select the custom code of the remote controller. (Note that the air conditioner cannot receive a custom code if the air conditioner has not been set for the custom code.) The custom code that is set through this process are applicable only to the custom in the

FUNCTION SETTING. For details on how to set the custom code through the normal process, refer to “Remote controller custom code”.

1 ) ( ) button to


change the custom code between → →

→ Match the code on the display to the air conditioner custom code. (initially set to ) (If the custom code does not need to be selected, press the MODE button and proceed to STEP 2.)

The air conditioner custom code is set to prior to shipment.

Contact your retailer to change the custom code.

The remote controller resets to custom code when the batteries in the remote controller are replaced. If you use a custom code other than custom code , reset the custom code after replacing the batteries.

If you do not know the air conditioner custom code setting, try each of the custom codes ( → → → ) until you fi nd the code which operates the air conditioner.


Setting the Function Number and Setting Value

1 )

( ) buttons to select the function number.

(Press the MODE button to switch between the left and right digits.)

Press the FAN button to proceed to setting the value.

(Press the FAN button again to return to the function number selection.)

3 )

( ) buttons to select the setting value.

(Press the MODE button to switch between the left and right digits.)

4 Press the SLEEP button, then after you hear the beep emitted from the indoor unit, press the

START/STOP button to con fi rm the settings.

Function number


Setting value


After completing the FUNCTION SETTING, be sure to disconnect the power and reconnect it again.


After disconnecting the power, wait 10 seconds or more before reconnecting it again.

The Function Setting does not become active unless the power is disconnected then reconnected again.


Perform the Function Setting according to the installation conditions using the remote controller.


• Con fi rm whether the wiring work for outdoor unit has been fi nished.

• Con fi rm 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


• Settings will not be changed if invalid numbers or setting values are selected.

12.1. Function Details

Filter sign

Select appropriate intervals for displaying the fi lter 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)



Setting Value Setting Description

00 Standard (400 hours)

01 Long interval (1,000 hours)




Short interval (200 hours)

No indication ♦


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)

Function Number


(For cooling)





















Setting Description

Standard setting

No correction 0.0 °C

-0.5 °C

-1.0 °C

-1.5 °C

-2.0 °C

-2.5 °C

-3.0 °C

-3.5 °C

-4.0 °C

+0.5 °C

+1.0 °C

+1.5 °C

+2.0 °C

+2.5 °C

+3.0 °C

+3.5 °C

+4.0 °C

More cooling

Less cooling

Auto restart

Enable or disable automatic restart after a power interruption.

( ♦ ... Factory setting)




Setting Value



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.

Remote controller custom code

(Only for wireless remote controller)

The indoor unit custom code can be changed. Select the appropriate custom code.

( ♦ ... Factory setting)



Setting Value Setting Description

00 A ♦

01 B


02 C

03 D

Indoor unit fan control for energy saving for cooling

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 Setting Description

00 Disable ♦


01 Enable

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.

Setting record

Record any changes to the settings in the following table.

Setting Description

Filter sign

Room temperature control for indoor unit sensor

Setting Value

Auto restart

Remote controller custom code

Indoor unit fan control for energy saving for cooling

After completing the FUNCTION SETTING, be sure to disconnect the power and reconnect it again.


Explain the following to the customer in accordance with the operating manual:

(1) Starting and stopping method, operation switching, temperature adjustment, timer, air fl ow switching, and other remote control unit operations.

(2) Air fi lter removal and cleaning, and how to use the air louvers.

(3) Give the operating manual to the customer.


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.

Error display



TIMER lamp




Error code




Serial communication error









• Wired remote controller communication error

• Server room control communication error

Check run unfinished

Automatic airflow adjustment error

Peripheral unit transmission PCB connection error

External communication error





Unit number or Refrigerant circuit address setting error

[Simultaneous Multi]

Indoor unit capacity error



Combination error





• Connection unit number error (indoor secondary unit)

[Simultaneous Multi]

• Connection unit number error

(indoor unit or branch unit)

[Flexible Multi]

Indoor unit address setting error







Primary unit, secondary unit setup error [Simultaneous Multi]

Connection unit number error in wired remote controller system

Power supply interruption error







Indoor unit PCB model information error

Indoor unit motor electricity consumption detection error

Manual auto switch error



Indoor unit power supply error for fan motor


Error display



TIMER lamp




Error code






Indoor unit communication circuit

(wired remote controller) error

Room temp. sensor error





Indoor unit heat ex. middle temp. sensor error

Human sensor error



Indoor unit fan motor error



Drain pump error





Electric air cleaner reverse VDD error

Filter set error



Damper error



Intake grille error







Indoor unit fan motor 2 error

(Left side fan)

Indoor unit fan motor 3 error

(Right side fan)

Indoor unit error







Outdoor unit reverse/missing phase and wiring error

Outdoor unit main PCB model information error or communication error

Inverter error



Active filter error, PFC circuit error



Trip terminal L error







Outdoor unit rush current limiting resister temp. rise error

Display PCB microcomputers communication 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





• 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 (permanent stop)

Outdoor unit fan motor 1 error

Error display



TIMER lamp




Error code




Outdoor unit fan motor 2 error



4-way valve error



Coil (expansion valve) error



Discharge temp. error



Compressor temp. error



High pressure error



Low pressure error



Branch boxes error

[Flexible Multi]

Display mode

: 0.5s ON / 0.5s OFF

: 0.1s ON / 0.1s OFF

( ) : Number of flashing

[Troubleshooting with the indoor unit display]

OPERATION indicator lamp (green)

TIMER indicator lamp (orange)

ECONOMY indicator lamp (green)



Key Features

  • Cools and heats rooms efficiently
  • Wall-mounted design for easy installation
  • Energy-saving operation
  • Quiet operation
  • Remote control for convenient operation
  • Easy to clean and maintain
  • Stylish design complements any decor
  • Durable construction for long-lasting performance

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Frequently Answers and Questions

What type of power supply does the Fujitsu ASGG24CLCA-B require?
The Fujitsu ASGG24CLCA-B requires a separate power supply line protected by a circuit breaker operating on all wires with a distance between contact of 3 mm.
Can the Fujitsu ASGG24CLCA-B be used to heat and cool a room?
Yes, the Fujitsu ASGG24CLCA-B is designed to provide both cooling and heating functions.
Is the Fujitsu ASGG24CLCA-B easy to install?
Yes, the Fujitsu ASGG24CLCA-B is designed for easy installation. It comes with a wall-mounted design and clear instructions for installation.
How do I clean the Fujitsu ASGG24CLCA-B?
The Fujitsu ASGG24CLCA-B is easy to clean. The intake grille and front panel can be removed for easy access to the interior for cleaning.