SYSTEM Air Conditioners

Transcription

1 INSTALLATION MANUAL SYSTEM Air Conditioners English Deutsch MODELS BEV unit BEVN32AV1 BEVN50AV1 BEVN125AV1 Français Español Italiano ÅëëçíéêÜ 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. Nederlands Portugues Ðóññêèé

2 DAIKIN INDUSTRIES, LTD. Noboru Murata Manager Quality Control Department 1st of October 2008 Umeda Center Bldg., , Nakazaki-Nishi, Kita-ku, Osaka, Japan DAIKIN.TCF.024C19/ TÜV Rheinland EPS B.V RXYN10AY1 FXSN20AV1, FXSN25AV1, FXSN32AV1, FXSN40AV1, FXSN50AV1, FXSN63AV1, FXSN100AV1 BEVN32AV1, BEVN50AV1, BEVN125AV1 Low Voltage 2006/95/EC Machinery Safety 98/37/EC Electromagnetic Compatibility 2004/108/EC EN , 2P

3 BEVN32AV1 BEVN50AV1 BEVN125AV1 VRV SYSTEM Air Conditioners Installation manual CONTENTS 1. SAFETY PRECAUTIONS BEFORE INSTALLATION BEFORE INSTALLATION SELECTING INSTALLATION SITE PREPARATIONS BEFORE INSTALLATION BEV UNIT INSTALLATION REFRIGERANT PIPING WORK ELECTRIC WIRING WORK TEST OPERATION SAFETY PRECAUTIONS Please 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 personal 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. Otherwise, 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. English 1

4 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 overheating. 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 significant voltage fluctuations, or in automobiles and watercraft. Doing so could result in a malfunction. 2 English

5 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 connections Unavailable. Perform brazing connections. Pipe brazing joints Pipes 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. Elbows Use products sold as optional accessories. Installation instruments that must withstand high pressures, such as charge hoses and pressure gauges Use 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. BEV unit BEVN32AV1 BEVN50AV1 BEVN125AV1 2-3 ACCESSORIES FXSN20AV1 FXSN25AV1 FXSN32AV1 FXSN40AV1 FXSN50AV1 Check if the following accessories are included with your unit. FXSN63AV1 FXSN100AV1 Name Clamp (3) Insulation for fitting (4) Installation manual Quantity 10 pcs. 2 pcs. 1 pc. (1) 6 short pieces For liquid piping 2 (I. D. φ35) Shape (2) 4 long pieces (5) Caution label 1 pc. Attach this to the EL. COMPO. BOX lid of the indoor unit after installation. English 3

6 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 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. Also review the SAFETY PRECAUTIONS. 3. BEFORE INSTALLATION Do 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 additional 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 customer 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. Location of microphone Overall (db) 0.1m Distance from BEV X SCALE A Xm Gypsum board (9.5mm thick) ISO6308 conforming product 1.5m 3.0m m 35 (B.G.N. is already rectified) 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) 4 English

7 Installation space Install so that the EL. COMPO. BOX lid is facing down. EL. COMPO. BOX lid Maintenance hole 600 or more Connected to outdoor unit 50 or more 100 or more Connected to indoor unit Be sure to create a maintenance hole the size shown in the righthand figure. 200 or more NOTE) 100 or more 200 or more (Service space) (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. 100 or more 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) 200 (length: mm) 5. PREPARATIONS BEFORE INSTALLATION (1) Check the relative locations of ceiling hole, unit, and hanging bolts. 289 (Suspension bolt pitch) <Example of installation> Ceiling slab BEV unit proper Anchor Long nut or turnbuckle Suspension bolt (Suspension bolt pitch) NOTE) All the above parts are field supplied. (length: mm) (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. English 5

8 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 Washer (field supplied) Hanging bolt (field supplied) Nut (field supplied) Double nut (field supplied) BEV main unit Hanging fitting 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) 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 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 permissible length after branching specified in 7-6 PIPING CONNECTION PROCEDURE. 7-2 INSTALLATION TOOLS Be 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) 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. 6 English

9 7-3 PIPING PROTECTION During the period of installation work, perform the protection of piping according to the Table 1 in order to prevent the ingress of moisture, dust, and dirt. Table 1 Place Period of work Protection method Outdoors Indoors At least one month Less than one month No limitations Pinching Pinching or taping CAUTION Pay 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 conditioner. 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/cm 2 ) or below, when the cheek will feel a breeze. Refrigerant piping Part to be brazed Pressure-reducing valve Nitrogen Taping hands valve Fig. 2 Nitrogen CAUTION Do 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. Part A Field supply piping BEV unit Brazing English 7

10 7-5 HEAT INSULATION WORK After the gas leakage inspection of piping joints, refer to Fig. 3 and Fig. 4 and conduct heat insulation work on the joints. Use insulation for fitting (3) to conduct the heat insulation work. (Refer to Fig. 3) The heat insulation material 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) Attached to the root Insulation for fitting (3) (accessory) Heat insulation material for piping (field supplied) Heat insulation material for piping (unit side) Fig. 3 Heat insulation material for piping (unit side) Heat insulation material for piping (field supplied) Cut the marginal ends off after tightening. Set the seam upward. Clamp (2) (accessory) Tighten the portion that overlaps with heat insulation material for piping. Fig. 4 8 English

11 7-6 PIPING CONNECTION PROCEDURE (1) Connection example for the indoor unit Only one indoor unit may be connected to each BEV unit. Gas piping Outdoor unit BEV unit Liquid piping Adjusted to fit the size of the piping connection hole on the indoor unit. (2) Installation position of BEV unit Install the BEV unit in the 15m range of difference in height between the indoor units. Possible installation range of BEV unit To outdoor unit First branch piping BEV unit BEV unit 15m or less To outdoor unit BEV unit 15m A B BEV unit (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 malfunction. 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. English 9

12 (1) Electrical characteristics Model BEVN32AV1 BEVN50AV1 BEVN125AV1 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 Units Power supply Hz Voltage Min. Max. MCA MFA Model Power supply wiring Transmission wiring Wire Size Wire Size BEVN32AV1 BEVN50AV1 BEVN125AV1 *H05VV Size must comply with local codes. Vinyl cord with sheath or cable (2 wire) (NOTE 2) mm 2 *Use wire type H07RN-F when protected pipes are not used. NOTES 1. 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 IEC Insulated thickness:1 mm or more 4. 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 WIRING An 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 terminals F1 and F2 (for the outdoor side) of the first BEV unit 1. Prohibited EL. COMPO. BOX 2 Do not open the lid of EL. COMPO. BOX 2 (on the left-hand side), which is not touched during the installation work. EL. COMPO. BOX 1 A5P A1P IN/D OUT/D A B C F1 F2 F1 F2 Prohibited Do not connect power supply wirings by any means. Use two-conductor transmission wirings (with no polarity). F1 F2 F1 F2 Outdoor unit side side F1 F2 F1 F2 Outdoor unit side side BEV unit 1 BEV unit 2 ABC To outdoor unit of another refrigerant system F1 F2 F1 F2 Connect the line (with polarity-sensitive terminals) so that the terminal signs coincide. COOL/HEAT selector Power supply 400V B Outdoor unit Power supply BEV unit 230V 16V B 16V 16V B Earth leakage breaker (used for ground fault, overload, and short-circuit protection) COOL/HEAT selector Remote controller 10 English

13 PRECAUTIONS Use 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 excessive force to the terminal. Use an appropriate screwdriver for tightening the terminal Ring-type crimp style terminal Connect wires of the same gauge to both sides. 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.) Attach insulation sleeve Do not connect wires of the same gauge to one side. Ring-type crimp style terminal Electric wire Do not connect wires of different gauges. Cup washer Remote controller/transmission wiring terminal block (M3.5) Tightening torque (N m) 0.79~0.97 Cut out section Power supply terminal block (M4) 1.18~1.44 Grounding wire (M4) 1.44~1.94 Transmission wiring can be branched to 16 lines. Branched lines cannot be further branched. (Refer to Fig. 5) Branch Subbranching F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 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. English 11

14 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. TO IN/D TO OUT/D UNIT UNIT F1 F2 F1 F2 X1A L N Ground terminal Clasp Clasp Clasp Clamp (1) (accessory) inter-unit wiring Clamp (1) (accessory) Outdoor unit inter-unit wiring Clamp (1) (accessory) Ground wire Power supply wiring EL. COMPO. BOX lid Clasp Clamp (1) (accessory) inter-unit wiring Transmission wiring ( inter-unit wiring) Transmission wiring (Outdoor unit inter-unit wiring) Power supply wiring Ground wire High voltage Low voltage Clasp Clasp Clamp (1) (accessory) Outdoor unit inter-unit wiring Arrow view Ground wire Clamp (1) (accessory) Power supply wiring Fig. 6 Power supply wiring and Ground wire Connect 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). 12 English

15 Transmission wiring Remove 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 equipment 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 supplied) 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 airconditioner 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. English 13

16 3P F EM08A070B (0901) HT