00 cv 3p233622-3f - uk | daikin · umeda center bldg., 2-4-12, nakazaki-nishi, kita-ku, osaka,...

MODELSBEV unit

BEVN32AV1BEVN50AV1BEVN125AV1

SYSTEM Air Conditioners

INSTALLATION MANUAL

English

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READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLATION.KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE.

LESEN SIE DIESE ANWEISUNGEN VOR DER INSTALLATION SORGFÄLTIG DURCH.BEWAHREN SIE DIESE ANLEITUNG FÜR SPÄTERE BEZUGNAHME GRIFFBEREIT AUF.

LIRE SOIGNEUSEMENT CES INSTRUCTIONS AVANT L’INSTALLATION.CONSERVER CE MANUEL A PORTEE DE MAIN POUR REFERENCE ULTERIEURE.

LEA CUIDADOSAMENTE ESTAS INSTRUCCIONES ANTES DE INSTALAR.GUARDE ESTE MANUAL EN UN LUGAR A MANO PARA LEER EN CASO DE TENER ALGUNA DUDA.

PRIMA DELL’INSTALLAZIONE LEGGERE ATTENTAMENTE QUESTE ISTRUZIONI.TENERE QUESTO MANUALE A PORTATA DI MANO PER RIFERIMENTI FUTURI.

ÄΙΑΒΑΣΤΕ ΠΡΟΣΕΚΤΙΚΑ ΑΥΤΕΣ ΤΙΣ ΟÄΗΓΙΕΣ ΠΡΙΝ ΑΠΟ ΤΗΝ ΕΓΚΑΤΑΣΤΑΣΗ ΕΧΕΤΕ ΑΥΤΟ ΤΟ ΕΓΧΕΙΡΙÄΙΟ ΕΥΚΑΙΡΟ ΓΙΑ ΝΑ ΤΟ ΣΥΜΒΟΥΛΕΥΕΣΤΕ ΣΤΟ ΜΕΛΛΟΝ.

LEES DEZE INSTRUCTIES ZORGVULDIG DOOR VOOR INSTALLATIE. BEWAAR DEZE HAN-DLEINDING WAAR U HEM KUNT TERUGVINDEN VOOR LATERE NASLAG.

LEIA COM ATENÇÃO ESTAS INSTRUÇÕES ANTES DE REALIZAR A INSTALAÇÃO.MANTENHA ESTE MANUAL AO SEU ALCANCE PARA FUTURAS CONSULTAS.

ПЕРЕД НАЧАЛОМ МОНТАЖА ВНИМАТЕЛЬНО ОЗНАКОМЬТЕСЬ С ДАННЫМИ ИНСТРУКЦИЯМИ. СОХРАНИТЕ ДАННОЕ РУКОВОДСТВО В МЕСТЕ, УДОБНОМ ДЛЯ ОБРАЩЕНИЯ В БУДУЩЕМ.

MONTAJDAN ÖNCE BU TALÝMATLARI DÝKKATLÝ BÝR BÝÇÝMDE OKUYUN.GELECEKTE BAÞVURMAK ÜZERE BU ELKÝTABINI KOLAY ULAÞABÝLECEÐÝNÝZ BÝR YERDE MUHAFAZA EDÝN.

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2P229632-1.fm Page 1 Monday, September 22, 2008 10:50 AM

English 1

BEVN32AV1BEVN50AV1BEVN125AV1

VRV SYSTEM Air Conditioners Installation manual

CONTENTS1. SAFETY PRECAUTIONS...............................................................................................1

2. BEFORE INSTALLATION ..............................................................................................3

3. BEFORE INSTALLATION ..............................................................................................4

4. SELECTING INSTALLATION SITE................................................................................4

5. PREPARATIONS BEFORE INSTALLATION .................................................................5

6. BEV UNIT INSTALLATION ............................................................................................6

7. REFRIGERANT PIPING WORK ....................................................................................6

8. ELECTRIC WIRING WORK ...........................................................................................9

9. TEST OPERATION ......................................................................................................13

1. SAFETY PRECAUTIONSPlease read these “SAFETY PRECAUTIONS” carefully before installing air conditioning unit and be sure to install it correctly. After completing installation, conduct a trial operation to check for faults and explain to the customer how to operate the air conditioner and take care of it with the aid of the operation manual. Ask the customer to store the installation manual along with the operation manual for future reference.This air conditioner comes under the term “appliances not accessible to the general public”.

This unit is a class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.

Meaning of WARNING and CAUTION notices.

WARNING ..........Failure to follow these instructions properly may result in personal injury or loss of life.

CAUTION ...........Failure to observe these instructions properly may result in property damage or per-sonal injury, which may be serious depending on the circumstances.

WARNING• Ask your dealer or qualified personnel to carry out installation work.

Do not attempt to install the air conditioner yourself. Improper installation may result in water leakage, electric shocks or fire.

• Install the air conditioner in accordance with the instructions in this installation manual. Improper installation may result in water leakage, electric shocks or fire.

• Consult your local dealer regarding what to do in case of refrigerant leakage.When the air conditioner is to be installed in a small room, it is necessary to take proper measures so that the amount of any leaked refrigerant does not exceed the concentration limit in the event of a leakage. Oth-erwise, this may lead to an accident due to oxygen depletion.

• Be sure to use only the specified accessories and parts for installation work. Failure to use the specified parts may result in the unit falling, water leakage, electric shocks or fire.

• Install the air conditioner on a foundation strong enough to withstand the weight of the unit. A foundation of insufficient strength may result in the equipment falling and causing injury.

• Carry out the specified installation work after taking into account strong winds, typhoons or earthquakes. Failure to do so during installation work may result in the unit falling and causing accidents.

• Make sure that a separate power supply circuit is provided for this unit and that all electrical work is carried out by qualified personnel according to local laws and regulations and this installation manual.An insufficient power supply capacity or improper electrical construction may lead to electric shocks or fire.

01_EN_3P233622-3F.fm Page 1 Monday, December 22, 2008 10:59 AM

2 English

• Make sure that all wiring is secured, the specified wires are used, and that there is no strain on the terminal connections or wires.Improper connections or securing of wires may result in abnormal heat build-up or fire.

• When wiring the power supply and connecting the wiring between the indoor and outdoor units, position the wires so that the EL. COMPO. BOX lid can be securely fastened.Improper positioning of the EL. COMPO. BOX lid may result in electric shocks, fire or the terminals over-heating.

• If refrigerant gas leaks during installation, ventilate the area immediately.Toxic gas may be produced if the refrigerant comes into contact with fire.

• After completing installation, check for refrigerant gas leakage.Toxic gas may be produced if the refrigerant gas leaks into the room and comes into contact with a source of fire, such as a fan heater, stove or cooker.

• Be sure to switch off the unit before touching any electrical parts.• Do not directly touch refrigerant that has leaked from refrigerant pipes or other areas, as there is a danger

of frostbite.• Be sure to earth the air conditioner.

Do not earth the unit to a utility pipe, lightning conductor or telephone earth lead.Imperfect earthing may result in electric shocks or fire.A high surge current from lightning or other sources may cause damage to the air conditioner.

• Be sure to install an earth leakage breaker.Failure to install an earth leakage breaker may result in electric shocks or fire.

CAUTION• Install the BEV units, power cord and connecting wires at least 1 meter away from televisions or radios to

prevent picture interference and noise.(Depending on the incoming signal strength, a distance of 1 meter may not be sufficient to eliminate noise.)

• Remote controller (wireless kit) transmitting distance can be shorter than expected in rooms with electronic fluorescent lamps (inverter or rapid start types).BEV unit as far away from fluorescent lamps as possible.

• Do not install the air conditioner in the following locations:1. Where there is a high concentration of mineral oil spray or vapour (e.g. a kitchen).

Plastic parts will deteriorate, parts may fall off and water leakage could result.2. Where corrosive gas, such as sulphurous acid gas, is produced.

Corroding of copper pipes or soldered parts may result in refrigerant leakage.3. Near machinery emitting electromagnetic radiation.

Electromagnetic radiation may disturb the operation of the control system and result in a malfunction of the unit.

4. Where flammable gas may leak, where there is carbon fibre or ignitable dust suspensions in the air, or where volatile flammables such as paint thinner or gasoline are handled.Operating the unit in such conditions may result in fire.

5. Do not use in areas where the air is salty, such as along seacoasts, in factories or other areas with sig-nificant voltage fluctuations, or in automobiles and watercraft.Doing so could result in a malfunction.


English 3

2. BEFORE INSTALLATION

2-1 ABOUT THIS PRODUCT

1. This product uses R744 (CO2) refrigerant.The utmost attention is required to handle R744 refrigerant, and strict measures must be taken to keep impurities (including mineral oil and other types of oil as well as moisture) out of the system. Be sure to follow the instructions in “7. REFRIGERANT PIPING WORK”.

2. The design pressure is 12.3 MPa (4.0 MPa for R410A). Therefore, the following conventional parts cannot be used.• Connection pipes

Thick-walled pipes are required. Refer to “7. REFRIGERANT PIPING WORK” for the specifications of the pipes.

• Flare nut connectionsUnavailable. Perform brazing connections.

• Pipe brazing jointsPipes with a maximum diameter of 12.7mm ....Make brazing connections with sleeve flare processing.Pipes with a diameter of 15.9mm.....................Use sockets sold as optional accessories.

• ElbowsUse products sold as optional accessories.

• Installation instruments that must withstand high pressures, such as charge hoses and pressure gaugesUse pressure-resistant instruments that withstand a minimum pressure of 12.3 MPa.

3. The indoor unit is an R744-dedicated unit. The following indoor unit models are connectable.(Do not connect other indoor unit models, or otherwise an inner piping rupture will result.)

2-2 COMBINATION

Attach a BEV unit to the indoor unit. As shown in the below table.

2-3 ACCESSORIES

Check if the following accessories are included with your unit.

BEV unit BEVN32AV1 BEVN50AV1 BEVN125AV1

Indoor unitFXSN20AV1FXSN25AV1FXSN32AV1

FXSN40AV1FXSN50AV1

FXSN63AV1FXSN100AV1

Name Clamp (3) Insulation for fitting (4) Installation manual

Quantity 10 pcs. 2 pcs. 1 pc.

Shape

(1) 6 short pieces

(2) 4 long pieces

For liquid piping × 2(I. D. φ35)

(5) Caution label

1 pc.

Attach this to the EL. COMPO. BOX lid of the indoor unit after installation.


4 English

2-4 CHECK ITEM• FOR THE FOLLOWING ITEMS, TAKE SPECIAL CARE DURING CONSTRUCTION AND CHECK

AFTER INSTALLATION IS FINISHED.Items to be checked after completion of work

Also review the “SAFETY PRECAUTIONS”.

3. BEFORE INSTALLATIONDo not throw away accessories required for installation work until the installation of the product is completed.Carry the product to the place of installation without unpacking. Be careful not to damage the units if it is unavoidable to unpack them in advance.

4. SELECTING INSTALLATION SITE⟨⟨When moving the unit while removing it from the carton box, be sure to lift it by holding on to the four lifting lugs without exerting any pressure on other parts, especially, the refrigerant piping.When it may exceed 30°C and RH80% in the ceiling or fresh air is inducted into the ceiling, an addi-tional insulation (Thickness 10mm or more of glasswool or polyethylene form) is required.⟩⟩(1) Select an installation site where the following conditions are fulfilled and that meets your cus-

tomer’s approval.• Install the product in buildings that use gypsum boards (9.5mm thick or more) for ceiling materials because

the product generates the flowing sound of refrigerant. It is recommended to install the product away from places or rooms where the sound is annoying. Refer to the following sketch to select a suitable place of installation.

• Indoors, places not exposed to rain or direct sunlight, places with little dust, or places with an ambient temperature of 60°C or below.

• Where is resistible against weight of BEV unit.• Where the false ceiling is not noticeably on an incline.• Where there is no risk of flammable gas leakage.• Where sufficient clearance for maintenance and service can be ensured.• Where the total piping length involving indoor unit and outdoor unit is below the allowable piping length.

(See the installation manual included with the outdoor unit for “7-4 PIPING CONNECTIONS”.)• Locations where a maintenance hole can be installed. (Refer to Fig. 1)

Items to be checked If not properly done, what is likely to occur Check

Are the indoor and outdoor unit fixed firmly? The units may drop, vibrate or make noise.

Is the gas leak test finished? It may result in insuffcient cooling.

Is the insulation complete? (Refrigerant piping) Water leaking or burn.

Does the power supply voltage correspond to that shown on the name plate? The unit may malfunction or the components burn out.

Are wiring and piping correct? The unit may malfunction or the components burn out.

Is the unit safely grounded? Risk of electric shock at electric leakage.

Is wiring size according to specifications? The unit may malfunction or the components burn out.

Are refrigerant piping length and additional refrigerant charge noted down? The refrigerant charge in the system is not clear.

0.1m

Xm Gypsum board (9.5mm thick)ISO6308 conforming product

• Location of microphone

(B.G.N. is already rectified)

• Overall (dB)

355.0m

373.0m

401.5m

SCALE ADistance from BEV

X


English 5

⟨⟨Installation space⟩⟩Install so that the EL. COMPO. BOX lid is facing down.

(2) After considering whether the location the unit is to be installed can support its weight, if it seems dangerous, install it after reinforcing the location with boards, crossbeams, etc.

(3) Avoid any contact with the ceiling surface, as this may cause noise and vibration.

[CAUTIONS]• Install the indoor and outdoor units, power supply wiring, transmission wiring and remote controller wiring

at least 1 meter away from televisions or radios in order to prevent image interference or noise.(Depending on the radio waves, a distance of 1 meter may not be sufficient enough to eliminate the noise.)

⟨⟨Pasting position of heat insulation material⟩⟩Paste the heat insulation material to the position indicated by .

5. PREPARATIONS BEFORE INSTALLATION(1) Check the relative locations of ceiling hole, unit, and hanging bolts.

(2) Open the eyebolt holes or the holes for passing the piping and wiring out of the unit.• Set the locations for the above holes, open them up and then lay the piping (refrigerant) and wiring

(including both power supply and transmission wiring) up to the piping and wiring connections in the unit. (See “7. REFRIGERANT PIPING WORK” and “8. ELECTRIC WIRING WORK” for details.)

• It might be necessary to reinforce the ceiling frame to maintain the levelness and to prevent vibration. Consult an architect or carpenter for details.

(3) Install the hanging bolts. (Use M8 hanging bolts.)• If it is pre-set, use hole-in anchors. Otherwise, use embedded inserts or embedded foundation bolts to

make sure that the weight of the unit can be supported. Adjust the distance to the ceiling beforehand.

Maintenance hole 600 or more Connected to outdoor unit Connected to

indoor unit

200 or more

50or

mor

e

100

or m

ore

100

or m

oreN

OT

E)

100

or m

ore 200 or more

(Service space)

EL. COMPO. BOX lid

Wire service entrance

NOTE) If the Maintenance hole cannot be installed directly below, make sure there is at least 400mm of space. Fig. 1 (length: mm)

Be sure to create a maintenance hole the size shown in the righthand figure.

200

(length: mm)

289

(Suspension bolt pitch)

289

(Suspension bolt pitch)

Anchor

Long nut or turnbuckle

Suspension boltBEV unit proper

NOTE) All the above parts are field supplied.

<Example of installation>

208

171

(length: mm)

Ceiling slab


6 English

6. BEV UNIT INSTALLATION• Use only accessories and parts which are of the designated specification when installing.

(1) Temporarily install the BEV unit.

• Mount the hanging fittings to hanging bolts. Secure the hanging fittings on the top and the bottom with nuts (M8, field supplied) and washers (M8: Outside diameter size 24 to 28mm) (field supplied).

(2) Adjust the height of the main unit with the nut.

(3) Check that the main unit is installed on the level.

(4) Tighten the nut on both the top and the bottom to fix securely.

7. REFRIGERANT PIPING WORK⟨To Piping Work Contractors⟩Do not use flux at the time of brazing and connecting refrigerant pipes. Use phosphorus-copper (BCuP-2) brazing alloy, which requires no flux.(Chlorine-based flux causes piping corrosion. Furthermore, if fluoride is contained, the flux will have adverse influences on the refrigerant piping line, such as the deterioration of refrigerating machine oil.)

7-1 SELECTION OF PIPES• Refer to the installation manual for the outdoor unit and decide on the size of each pipe and select a suitable

refrigerant branching kit.• Use the following type of refrigerant pipe.

Material: Phosphorus deoxidized seamless copper pipe (C1220T-1/2H or C1220T-H)Pipe wall thickness: Product withstanding 12.3 MPa

⟨Pipe wall thickness examples⟩ (length: mm)

• Be sure to use pipes with clean outer and inner surfaces free of contaminants, such as sulfides, oxides, dust, chip, oil and fat, and moisture.It is desirable that the adhesion oil in the piping system does not exceed 30mg per 10m.

• Conduct piping work within the maximum permissible length, permissible difference in height, and permis-sible length after branching specified in “7-6 PIPING CONNECTION PROCEDURE”.

7-2 INSTALLATION TOOLSBe sure to use dedicated tools so that the air conditioner will maintain proper pressure resistance and the contamination of impurities will be prevented.

Compatibility with conventional tools (other refrigerants)

Pipe size (outer diameter) Quality of material Minimum wall thickness

φ6.4 1/2H 0.8

φ9.5 1/2H 1.0

φ12.7 1/2H 1.3

φ15.9 1/2H 1.8

Name Compatibility Remarks

Pipe cutter • Use a cutter suitable to the piping thickness.

Pipe bender

• Use a different elbow sold as an optional accessory if the bending radius needs to be reduced.

• Use a different elbow sold as an optional accessory for the bending portions of pipes with a diameter of 15.9mm.

Expander (pipe expansion tool)

• Use a different socket sold as an optional accessory for pipes with a diameter of 15.9mm, however, due to difficulty in expanding them.

BEV main unit

Hanging fitting

Washer (field supplied)

Nut (field supplied)

Double nut

(field supplied)

Hanging bolt (field supplied)


English 7

7-3 PIPING PROTECTIONDuring the period of installation work, perform the protection of piping according to the Table 1 in order to pre-vent the ingress of moisture, dust, and dirt.Table 1

CAUTIONPay the utmost attention to the ingress of dust and dirt in the case of piping through the penetration holes on the walls or taking out the ends of piping outdoors.

7-4 PIPING CONNECTIONS• Be sure to perform nitrogen substitution and nitrogen blowing at the time of brazing. (Refer to Fig. 2)

A large quantity of oxidization film will be generated on the inner surface of piping if brazing is performed without nitrogen substitution or blowing nitrogen into piping, thus giving an adverse influence on a variety of valves and the compressor in the refrigerant system and obstructing the normal operation of the air con-ditioner.

• At the time of brazing with nitrogen being applied, use a reducing valve and set the pressure of nitrogen to

0.02 MPa (approximately 0.2 kg/cm2) or below, when the cheek will feel a breeze.

CAUTIONDo not use anti-oxidants when brazing the piping joints. Residue can clog piping and break equipment.

Piping Connections• Protect part A with a wet cloth at the time of brazing so that the temperature of part A will not exceed 80°C.

Place Period of work Protection method

OutdoorsAt least one month Pinching

Less than one monthPinching or taping

Indoors No limitations

Nitrogen

Nitrogen

Fig. 2

hands valve

Pressure-reducing valve

Taping

Part to be brazedRefrigerant piping

BEV unit

Part A Field supply piping

Brazing


8 English

7-5 HEAT INSULATION WORK• After the gas leakage inspection of piping joints, refer to Fig. 3 and Fig. 4 and conduct heat insula-

tion work on the joints.• Use insulation for fitting (3) to conduct the heat insulation work. (Refer to Fig. 3) The heat insulation mate-

rial is provided to the liquid and gas pipes, respectively.• Be sure to set the seam of the insulation for fitting (3) upward.

Use a clamp (2) to tighten both ends of the insulation for fitting. (Refer to Fig. 4)

Attached to the root

Insulation for fitting (3)(accessory)

Insulation for fitting (3)(accessory)

Attached to the root

Heat insulation material for piping (field supplied)

Heat insulation material for piping (field supplied)

Heat insulation material for piping (unit side)

Heat insulation material for piping (unit side)

Fig. 3

Set the seam upward.

Clamp (2) (accessory)

Tighten the portion that overlaps with heat insulation material for piping. Fig. 4

Cut the marginal ends off after tightening.


English 9

7-6 PIPING CONNECTION PROCEDURE(1) Connection example for the indoor unit

• Only one indoor unit may be connected to each BEV unit.

(2) Installation position of BEV unit• Install the BEV unit in the 15m range of difference in height between the indoor units.

(3) Allowable length after split (actual piping length)A+B≤40m (length from the first branch piping to the indoor unit)B≤15m (length from the BEV unit to the indoor unit)

8. ELECTRIC WIRING WORK

8-1 GENERAL INSTRUCTIONS • All field supplied parts and materials and electric works must conform to local codes.• Use copper wire only.• For electric wiring work, refer to also “WIRING DIAGRAM” attached to the EL. COMPO. BOX lid.• For remote controller wiring details, refer to the installation manual attached to the remote controller.• All wiring must be performed by an authorized electrician.• One BEV unit is connected to one indoor unit. Mark each indoor unit and BEV unit as unit A, unit B..., and

be sure the terminal block wiring to the outdoor unit and BEV unit are properly matched. If wiring and piping between the outdoor unit and an indoor unit and BEV unit are mismatched, the system may cause a mal-function.

• A circuit breaker capable of shutting down power supply to the entire system must be installed.• Refer to the installation manual attached to the outdoor unit for the size of power supply wiring connected

to the outdoor unit, the capacity of the circuit breaker and switch, and wiring instructions.• Be sure to ground the air conditioner.• Do not connect the ground wire to gas and water pipes, lightning conductors, or telephone ground wires.

• Gas pipes: might cause explosions or fire if gas leaks.• Water pipes: no grounding effect if hard vinyl piping is used.• Telephone ground wires or lightning conductors: might cause abnormally high electric potential in the

ground during lighting storms.

Outdoor unitBEV unit

Gas piping

Liquid piping

Adjusted to fit the size of the piping connection hole on the indoor unit.

Indoor unit

BEV unitBEV unit

BEV unit

BEV unit

15m

or

less

15m

A B

Possible installation range of BEV unit

To outdoor unit

To outdoor unitFirst branch piping

Indoor unit Indoor unit

Indoor unitIndoor unit


10 English

(1) Electrical characteristics

MCA: Min. Circuit Amps (A); MFA: Max. Fuse Amps (A)

NOTES• The above Table of Electrical characteristics refers to the BEV unit only.• See the technical documents for other details.

(2) Specifications for field supplied wire

*Use wire type H07RN-F when protected pipes are not used.

NOTES1. Select the particular size of electrical wire for power line in accordance with the standards of the given nation and region.2. Specifications for local wiring are in compliance with IEC60245.3. Insulated thickness:1 mm or more4. Allowable length of the transmission wiring should be as follows.

Between outdoor unit, BEV unit and indoor unit:Max. 1000m (Total wiring length: 2000m)Between BEV unit and remote controller: Max. 500m

5. Up to 16 branches are possible for unit-to-unit cabling. No branching is allowed after branching.

8-2 EXAMPLE OF ENTIRE SYSTEM WIRINGAn example of single-system wiring is shown here.• Connect terminals F1 and F2 (the indoor-to-outdoor terminals) in the switchbox of the outdoor unit to ter-

minals F1 and F2 (for the outdoor side) of the first BEV unit 1.

ModelUnits Power supply

Hz Voltage Min. Max. MCA MFA

BEVN32AV1BEVN50AV1

BEVN125AV150 230 207 253 0.1 15

ModelPower supply wiring Transmission wiring

Wire Size Wire Size

BEVN32AV1BEVN50AV1

BEVN125AV1*H05VV

Size must comply with local codes.

Vinyl cord withsheath or cable

(2 wire) (NOTE 2)0.75 - 1.25 mm2

F2F1 F2 F1A B CIN/D OUT/D

F2F1 F2 F1Outdoor unit side Indoor unit side

F2F1 F2 F1Outdoor unit side Indoor unit side

Use two-conductor transmission wirings (with no polarity).

EL. COMPO. BOX 1

A BC

F1 F2F1 F2

Indoor unitIndoor unit

BEV unit 1 BEV unit 2

Do not open the lid of EL. COMPO. BOX 2 (on the left-hand side), which is not touched during the installation work.

230V

16V

16V

16V

400V

BB

Outdoor unitBEV unit

Remote controllerCOOL/HEAT selector

Indoor unit

Power supplyPower supply

Earth leakage breaker (used for ground fault, overload, and short-circuit protection)

B

Connect the line (with polarity-sensitive terminals) so that the terminal signs coincide.

COOL/HEAT selector

A1PA5P

To outdoor unit of another refrigerant system

EL. COMPO.BOX 2

Prohibited

Do not connect power supply wirings by any means.Prohibited


English 11

PRECAUTIONSUse ring-type crimp-style terminals for connecting wires to the power supply terminal board. If unavailable, observe the following points when wiring.• Do not coat stranded wires with solder.• Do not connect wires of different gauge to the same power

supply terminal. (Looseness in the connection may cause overheating.)

• When connecting wires of the same gauge, connect them according to the righthand figure.

• Use the specified electric wire. Connect the wire securely to the terminal. Lock the wire down without applying exces-sive force to the terminal.

• Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small head will strip the head and make proper tightening impossible.

• Over-tightening the terminal screws may break them.

⟨Precautions for grounding terminal connections⟩Be sure to connect the ground wire so that the cup washer will come out of the cutout part.(Otherwise, the effect of grounding may be lost due to the insufficient contact of the ground wire.)

• Transmission wiring can be branched to 16 lines. Branched lines cannot be further branched. (Refer to Fig. 5)

• Do not connect 200 V to the terminal block for transmission wiring by any means.Otherwise, the entire system will be damaged.

• Be sure to keep the following limits, or otherwise a transmission error may result.• Wiring length: 1000 m max.• Total wiring length: 2000 m max.• Number of branches: 16 max.

Tightening torque (N·m)

Remote controller/transmission wiring terminal block (M3.5)

0.79~0.97

Power supply terminal block (M4) 1.18~1.44

Grounding wire (M4) 1.44~1.94

Electric wire

Ring-type crimp style terminal

Attach insulation sleeve

Connect wires of the same gauge to both sides.

Do not connect wires of the same gauge to one side.

Do not connect wires of different gauges.

Cup washer

Cut out section

Ring-type crimp style terminal

SubbranchingBranch

F1 F2 F1 F2 F1 F2

F1 F2 F1 F2

Fig. 5


12 English

8-3 CONNECTION OF WIRING• Perform wiring connections after completion of refrigerant piping work.• Check that all the power supply lines are shut off.• Loosen the two screws of the EL. COMPO. BOX, remove the lid, and connect each wire as shown in Fig. 6.• When all the wiring work is completed, attach and secure the lid of the EL. COMPO. BOX.

• Power supply wiring and Ground wireConnect the power supply wires to terminals L and N of the power supply terminal block (X1M).Connect the ground wire to the ground terminal. At that time, pull the power supply wires into the equipment along with the ground wire through the wiring through hole, and bundle and fix the wires securely with the accessory clamp (1).

Clasp

Clasp

Clasp

Ground terminal

EL. COMPO. BOX lid

Indoor unit inter-unit wiring

Power supply wiring

Power supply wiring

Ground wire

Ground wire

Clamp (1)

(accessory)

Clamp (1)

(accessory)

Clamp (1)

(accessory)

Outdoor unit inter-unit wiring

Arrow viewClamp (1)

(accessory)

Clasp

Highvoltage

Lowvoltage

Power supply wiring

Transmission wiring (Indoor unit inter-unit wiring)Transmission wiring (Outdoor unit inter-unit wiring)

Ground wire

Fig. 6

Clamp (1)

Clasp Clasp

Indoor unit inter-unit wiring

Outdoor unit inter-unit wiring

(accessory)Clamp (1)

(accessory)

TO IN/DUNIT

F1 F2 F1 F2 X1A

TO OUT/DUNIT

L N


English 13

• Transmission wiringRemove the EL. COMPO. BOX lid, and connect the transmission wires to the transmission wiring terminals (F1 and F2 on the indoor side and F1 and F2 on the outdoor side). In that case, pull the wires into the equip-ment through the wiring through hole, and bundle and fix the wires securely with the accessory clamp (1).

[CAUTIONS]• Do not connect the power supply wiring to terminals F1 and F2 of the transmission wiring terminal block by

any means.Otherwise, the entire system may be damaged.

CAUTION• Use the accessory clamp (1) when clamping each wire so that the wire will be clamped securely and that

no tension will be imposed on the wiring connection block. When wiring, arrange the wires neatly so that the EL. COMPO. BOX lid will not rise, and attach the cover securely.When attaching the EL. COMPO. BOX lid, pay the utmost attention so that the wires will not be caught between the EL. COMPO. BOX lid.

• After the wires are connected, seal the wiring extraction part with putty or heat insulation material (field sup-plied) so that there will be no clearance in order to prevent the intrusion of small animals from the outside.If insects or small animals intrude, short-circuiting may occur in the EL. COMPO. BOX.

• Separate the low-voltage wires (transmission wiring) at least 50 mm from high-voltage wires including the power supply and ground wires outside the equipment so that they will not be wired through the same place. Otherwise, the transmission wires will receive electrical noise (external noise), thus resulting in air-conditioner errors and failures.

9. TEST OPERATION(1) Check that the EL. COMPO. BOX lid is closed after the installation of the indoor, BEV, and outdoor units

are all finished.

(2) Refer to the installation manuals provided to the indoor and outdoor units for the trial operation of the air conditioner.


(0901) HT3P233622-3F EM08A070B

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