INSTALLATION MANUAL
Contents
1.2. e Function Number 30 yF 3 Set the Setting Number to 00 Default e Function Number 31 Set the Setting Number to 02 Refer to 7 3 Function setting for details about Function o Number and Setting Number i N ies ie Cable clamps Binder Accessories of IR receiver unit En 17 6 9 Drain pump unit Optional parts e For the installation method please refer to the INSTALLATION MANUAL of drain pump unit Connection methods e Connection terminals Float switch terminal CN15 Controller PCB Drain pump terminal CN5 e Wiring arrangement Controller PCB Clamp Power supply cable Cable clamp Binder Bind with the power supply cable Binder Cable clamps Accessories of Drain pump unit En 18 7 FIELD SETTING There are 3 methods for address setting by FIELD SETTING as follows Set by either of the methods Each setting method is described 1 to 3 below 1 IU AD REF AD SW settings This section 7 1 Setti
3. of 6e 6 3 Do not set the indoor unit address IU AD SW at 64 to 99 It may result failure 3 Remote controller address Rotary switch RC AD SW Factory setting O When connecting multiple indoor units to 1 standard wired remote controller set the address at RC AD SW in sequence from 0 Dip switch SET 3 Table B Custom code A Factory setting B Cc D DIP SW SET 3 SW1 Remote Setting controller example DIP SW address 0 gt sET3 Swo OFF OFF ON ON En 19 7 3 Function setting e FUNCTION SETTING can be performed with the wired or wireless remote controller The remote controller is optional equipment e Refer to the wired or wireless remote controller manual for detailed setting information Set IU AD REF AD SW to 0 e Refer to 7 1 Setting the address for indoor unit address and refrigerant circuit address settings e Turn the power of the indoor unit ON before starting the setting Turning on the power indoor units initializes EEV so make sure the piping air tight test and vacuuming have been conducted before turning on the power Also check again to make sure no wiring mistakes were made before turning on the power Function details Function Function Setting Default Details number number Default Adjust the filter cleaning Filt interval notification If the er for Longer notification is too early indica
4. Wiring methods and specifications e A twisted pair cable 22AWG should be used Maximum length of cable is 150 m e Use an external input and output cable with appropriate external dimension depending on the number of cables to be installed e The wire connection should be separate from the power cable line Operation behavior Connector Output voltage Status oa ty oan CN23 Ww aia he O e Output voltage Hi DC12V 2V Lo OV Permissible current 15mA Operation indicator connected unit En 15 Error indicator Indoor unit fan status indicator connected unit 3 Connection methods e Wire modification Use a tool to cut off the terminal on the end of the wire and then remove the insulation from the cut end of the wire Connect the wire with connecting wire with solder Important Be sure to insulate the connection between the wires Option parts External input output wire FE m connection Field supply e Connection terminals Output terminal Output CN23 terminal Controller PCB CN22 Input terminal CN27 terminal CN24 En 16 e Wiring arrangement Controller PCB Field supply
5. 4 3 2 Bending pipes If pipes are shaped by hand be careful not to collapse them Do not bend the pipes in an angle more than 90 e When pipes are repeatedly bend or stretched the material will harden making it difficult to bend or stretch them any more Do not bend or stretch the pipes more than 3 times A CAUTION 4 4 Installing heat insulation e Insulate by the coupler heat insulation Accessories around the gas pipe and liquid pipe of indoor side e After installing the coupler heat insulation wrap both end with vinyl tape so that there is no gap e After affixing the coupler heat insulation secure it with 2 binders large one on each end of the insulation e Make sure that the binders overlap the heat insulation pipe Coupler heat insulation amp this portion with Accessories heat insulation Binder Large Heat insulation Accessories CAUTION To prevent breaking of the pipe avoid sharp bends If the pipe is bent repeatedly at the same place it will break 4 3 3 Pipe connection When the flare nut is tightened properly by your hand hold the body side coupling with a separate spanner then tighten with a torque wrench See the table below for the flare nut tightening torques A CAUTION Hold the torque wrench at its grip keeping it in the right angle with the pipe in order to tighten the flare nut correctly e Tig
6. the alignment is on top After installing the Drain hose check if the drainage is smooth Downward gradient 2 5 5 0mm OK NO GOOD x x Outlet air flow Trap Drain hose X NO GOOD O OK Arrange the drain hose ee Rise lower than this portion NO GOOD En 9 Supporter e Securely connect the connection cables to the terminal board In addition secure the cables with wiring holders Improper connections either in the wiring or at the ends of the wiring can cause a malfunction electric shock or fire Always fasten the outside covering of the connection cable with the cable clamp If the insulator is chafed electric leakage may occur Install a ground leakage breaker In addition install the ground leakage breaker so that the entire AC main power supply is cut off at the same time Otherwise electric shock or fire could result 1 5to2 0m NO GOOD A CAUTION e Always check that the drain cap is installed to the unused drain port and is fastened with the binder If the drain cap is not installed or is not sufficiently fastened by the binder water may drip during the cooling operation Always connect the ground cable Improper grounding work can cause electric shocks Install the remote controller cables so as not to be direct touched with your hand 6 ELECTRICAL WIRING e Perform wiring work in accordance with standards so that the air conditioner
7. 6 7 Remote sensor Optional parts e For the installation method please refer to the INSTALLATION MANUAL of remote sensor Connection methods e Connection terminals Controller PCB Remote sensor terminal CN19 seine atrangement 6 8 IR receiver unit Optional parts Controller PCB Shield wire Cable clamp e For the installation method please refer to the o INSTALLATION MANUAL of IR receiver unit 2 Connection methods Q oj fo e Connection terminals I QES a L CT og a IR receiver unit SS B Controller PCB terminal CN13 0 anen h R Toe O O gt Earth screw Cable Binder clamp Field supply e Remove the existing connector and replace it with the remote sensor connector ensure that the correct connector is used e The original connector should be insulated to ensure thatit does not come into contact with other electrical circuitry Sa Wiring arrangement e Use conduit hole when external output cable is used Controller PCB Core Setting for room temperature correction When a remote sensor is connected set the function setting of indoor unit as indicated below
8. SW R a SW 2 Refrigerant circuit address i A N go DN Rotary switch REF AD x 1 Factory setting 0 Rotary switch REF AD x 10 Factory setting 0 In the case of multiple refrigerant systems set REF AD SW as shown in the Table A for each refrigerant system Remote Set to the same refrigerant circuit address as the outdoor controller unit e If working in an environment where the wireless remote controller can be used the addresses can also be set using the remote controller oT 7 27 st 4 st 6 7 If setting the addresses using the wireless remote Address o 1 2 3 4 5 6 7 eH seta a indoor unit address and refrigerant circuit RCADSW 8 o A B Cc D E FI For information on setting using the wireless remote Address 8 9 10 11 12 13 14 15 controller Table A Rotary Rotary i 7 2 Custom code setting Switch Setting Switch Setting Selecting the custom code prevents the indoor unit mix up Refrigerant REF AD SW IUADSW Up to 4 codes can be set circuit x10 x1 kofa Perform the setting for both the indoor unit and the remote controller Code change Confusion A B Cc D Indoor unit ey H F gen r T i 7 Remote a controller A B c D e Custom code setting for indoor unit Set the DIP SW SET 3 SW1 SW2 referring to the Table B
9. and cause the cables to abnormally heat up B For strand wiring 1 Use ring terminals with insulating sleeves as shown in the figure below to connect to the terminal block 2 Securely clamp the ring terminals to the cables using an appropriate tool so that the cables do not come loose 3 Use the specified cables connect them securely and fasten them so that there is no stress placed on the terminals 4 Use an appropriate screwdriver to tighten the terminal screws Do not use a screwdriver that is too small otherwise the screw heads may be damaged and prevent the screws from being properly tightened 5 Do not tighten the terminal screws too much otherwise the screws may break 6 See the table for the terminal screw tightening torques 7 Please do not fix 2 power supply cables with 1 screw o pa Ring terminal I 7 A gt Screw with special washer Screw with special washer Ring terminal Ring Cable Cable terminal f N Terminal block A WARNING e Use ring terminals and tighten the terminal screws to the specified torques otherwise abnormal overheating may be produced and possibly cause heavy damage inside the unit Tightening torque 1 2 to 1 8 Nem 12 to 18 kgf cm M4 screw Power supply L N GND En 12 6 3 2 Transmission and Remote controller cable RY p gt Q S Shielded ee cable No film gt gt a HS Ss Remote controller cable Tr
10. can be operated safely and positively Connect the connection cables firmly to the terminal board Imperfect installation may cause a fire Z WARNING e Electrical work must be performed in accordance with this Manual by a person certified under the national or regional regulations Be sure to use a dedicated circuit for the unit An insufficient power supply circuit or improperly performed electrical work can cause serious accidents such as electric shock or fire If the supply cord is damaged it must be replaced by the manufacturer its service agent or similarly qualified persons in order to avoid a hazard ZA CAUTION Before starting work check that power is not being supplied to the indoor unit and outdoor unit For wiring use the prescribed type of wires connect them securely making sure that there are no external forces of the wires applied to the terminal connections Improperly connected or secured wires can cause serious accidents such as overheating the terminals electric shock or fire Ground the unit Do not connect the ground cable to a gas pipe water pipe lightning rod or a telephone ground cable Improper grounding may cause electric shock Do not connect power supply cables to the transmission or remote controller terminals as this will damage the product Securely install the electrical box cover on the unit An improperly installed electrical box cover can
11. for the split type air conditioner because it is very difficult to move from place to place after the first installation 3 1 Selecting an installation location Z WARNING e Select installation locations that can properly support the weight of the indoor Install the units securely so that they do not topple or fall En 3 Z CAUTION Do not install the unit in the following areas e Area with high salt content such as at the seaside It will deteriorate metal parts causing the parts to fall or the unit to leak water e Area filled with mineral oil or containing a large amount of splashed oil or steam such as a kitchen It will deteriorate plastic parts causing the parts to fall or the unit to leak water e 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 e Area that can cause combustible gas to leak contains suspended carbon fibers or flammable dust or volatile inflammables such as paint thinner or gasoline If gas leaks and settles around the unit it can cause a fire e 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
12. gas Installation work must be performed in accordance with national wiring standards by authorized personnel only Except for EMERGENCY never turn off main as well as sub breaker of the indoor units during operation It will cause compressor failure as well as water leakage First stop the indoor unit by operating the control unit converter or external input device and then cut the breaker Make sure to operate through the control unit converter or external input device When the breaker is designed locate it at a place where the users cannot start and stop in the daily work Pressure is huge and cannot be measured with a conventional gauge To prevent erroneous mixing of other refrigerants the diameter of each port Gauge manifold has been changed It is recommended to use a gauge manifold with a high pressure display range 0 1 to 5 3 MPa and a low pressure display range 0 1 to 3 8 MPa To increase pressure resistance the Charging hose hose material and base size were changed This mark indicates procedures which A if improperly performed might possibly CAUTION result in personal harm to the user or damage to property A conventional vacuum pump can be used by installing a vacuum pump adapter Vacuum pump Be sure that the pump oil does not backflow into the system Use one capable for vacuum suction of 100 7 kPa 5 Torr 755 mmHg Gas leakage Special gas leaka
13. i Ch4 CN27 1 connected unit In the case of Pulse input Connector Input signal Command Ch1 OFF ON Operation et Ch2 OFF ON Stop See eee P C B 1 1 1 CN27 if 1 connected unit The last command has priority The indoor units within the same remote controller group operates in the same mode e When function setting is Emergency stop mode In the case of Edge input Connector Input signal Command In the case of Pulse input Connector Input signal Command cnar Len oroo Normal e When function setting is Forced stop mode In the case of Edge input Connector Input signal Command OFF ON Forced stop Ch1 of CN27 ON OFF Normal In the case of Pulse input Connector Input signal Command Ch1 OFF ON Forced stop CN27 Ch2 OFF ON Normal When the forced stop is triggered indoor unit stops and Start Stop operation by a remote controller is restricted When forced stop function is used with forming a remote controller group connect the same equipment to each indoor unit within the group Selection method of functions Start Stop mode or Emergency stop Forced stop mode can be selected with function setting of indoor unit 2 External output terminals e When picking up output signals for operating status abnormal conditions or indoor unit status
14. in such a way that cannot be removed without tools e The static pressure outside the unit is as follows ARXA24 30 36 45L Model 30 150 Pa ARXB24 30 36 45L Models 0 80 Pa e If an intake duct is installed take care not to damage the temperature sensor the temperature sensor is attached to the intake port flange e Install the air inlet grille for air circulation The correct temperature can not be detected i Duct Field supply Outlet Grille Inlet Grille il Field supply Field supply Room e Be sure to install the air filter in the air inlet If the air filter is not installed the heat exchanger may be clogged and its performance may decrease 3 3 5 Fresh air intake Processing before use 1 When taking in fresh air cut a slit shaped cabinet in the left side of the outer case with nippers Cabinet Iron plate Round hole En 6 2 Install the round flange optional parts to the fresh air intake Round duct 3 Connect the duct to the round flange 4 Seal with a band and vinyl tape etc so that air does not leak from the connection 4 PIPE INSTALLATION ZA CAUTION Be more careful that foreign matter oil water etc does not enter the piping than with refrigerant R410A models Also when storing the piping securely seal the openings by pinching taping etc e While welding the p
15. preserved or stored objects Do not install where there is the danger of combustible gas leakage Do not install the unit near a source of heat steam or flammable gas Install the unit where drainage does not cause any trouble Install the indoor unit outdoor unit power supply cable transmission cable and remote controller 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 e If children under 10 years old may approach the unit take preventive measures so that they cannot reach the unit e Decide the mounting position with the customer as follows 1 Install the indoor unit on a place having a sufficient strength so that it withstands against the weight of the indoor unit 2 The inlet and outlet ports should not be obstructed the air should be able to blow all over the room 3 Leave the space required to service the air conditioner 4 A place from where the air can be distributed evenly throughout the room by the unit Install the unit where connection to the outdoor unit is easy Install the unit where the connection pipe can be easily installed 5 6 7 Install the unit where the drain pipe can be easily installed 8 Install the unit where noise and vibrations are not amplified 9 Take ser
16. ER MASTER SLAVE Crossover wiring of power supply Indoor unit Indoor unit Indoor unit Power supply Power supply Power supply LIN thle LIN Pull box Breaker Pull box AK L N Power supply Before attaching the cable to terminal block 6 3 1 Power supply cable Adjust the length of power supply cable to avoid excessive tension with referring figure below Power supply cable A For solid core wiring 1 To connect the electrical terminal follow the below diagram and connect after looping it around the end of the cable 2 Use the specified cables connect them securely and fasten them so that there is no stress placed on the terminals 3 Use an appropriate screwdriver to tighten the terminal screws Do not use a screwdriver that is too small otherwise the screw heads may be damaged and prevent the screws from being properly tightened 4 Do not tighten the terminal screws too much otherwise the screws may break 5 See the table for the terminal screw tightening torques 6 Please do not fix 2 power supply cables with 1 screw En 11 Ray ay gt _ Screw with Loop F special washer Screw with special washer Cable able end Cable Loop end Cable a Loop f N Terminal block Z WARNING e When using solid core cables do not use the ring terminal If you use the solid core cables with the ring terminal the ring terminal s pressure bonding may malfunction
17. VRF SYSTEM INDOOR UNIT Duct Type A CAUTION R410A REFRIGERANT with refrigerant R410A THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL Refer to Commonwealth State Territory and local legislation regulations codes installation amp operation manuals before the installation maintenance and or service of this product INSTALLATION MANUAL For authorized service personnel only Contents 1 SAFETY PRECAUTIONS cccccceessnssseeeeessenseeee 2 6 2 Wiring Metodiskais 11 2 ABOUT THE UNIT 6 3 Unit wiring PS iain eea aeter aati 11 2 1 Precautions for using the R410A refrigerant 2 6 4 oe of wiring E E T 13 2 2 Special tool for R410A ieriiiiienn 2 625 Air low Changing wieciss ia measina 13 PE ACCESSONES E 2 6 6 External input and external output 2 4 Optional patsiendi aserite entenas 3 Optional parts tee ee tee tees es 14 6 7 Remote sensor Optional parts cee 16 3 INSTALLATION WORK 6 8 IR receiver unit Optional parts eeee 17 3 1 Selecting an installation location ceee 3 6 9 Drain pump unit Optional parts ssssssseeeeee 18 3 2 Installation diMensionS 0 cee eee eee eects 4 3 3 Installing the Unit cccccccccccsscscssessssssesssssssseseeeeseee 4 f FIELD SETTING T1 Setting the address issiria uae 18 4 PIPE INSTALLATION 7 2 Custom code setting ceceeeeeeeeteeeee
18. ansmission cable e Connect remote controller and transmission cables as shown in Fig A Fig A Cable of the different caliber NO GOOD Cable of the same caliber OK Z WARNING e Tighten the terminal screws to the specified torques otherwise abnormal overheating may be produced and possibly cause heavy damage inside the unit Tightening torque M3 5 screw Transmission X1 X2 Remote controller Y1 Y2 Y3 0 8 to 1 0 Nem 8 to 10 kgf cm A CAUTION To peel the film from the lead cable use a dedicated tool that will not damage the conductor cable When installing a screw on the terminal block do not cut the cable by overtightening the screw On the other hand an undertightened screw can cause faulty contact which will lead to a communication failure 6 4 Connection of wiring 1 Remove the control box cover and install each connection cable Binder Medium Accessories Remote controller cable Transmission cable Field supply Power supply cable Field supply R t troll bl sra L N Power supply cable Saa controller cable X1 X2 Transmission cable aa LZ Cable clamp Y3 Black l eK q Ale Cero TA RIRI ONT Binder Medium Accessories 6 5 Air flow changi
19. ately vacate the premises and thoroughly ventilate the area If the refrigerant comes in contact with a flame it produces a toxic gas This mark indicates procedures which if Z WARNING improperly performed might lead to the death or serious injury of the user 2 2 Special tool for R410A Z WARNING e Request your dealer or a professional installer to install the unit in accordance with this Manual An improperly installed unit can cause serious accidents such as water leakage electric shock or fire If the unit is installed in disregard of the instructions in the Installation Manual it will void the manufacturer s warranty Do not turn ON the power until all work has been completed Turning ON the power before the work is completed can cause serious accidents such as electric shock or fire e To install a unit that uses the R410A refrigerant use dedicated tools and piping materials that have been manufactured specifically for R410A use Because the pressure of the R410A refrigerant is approximately 1 6 times higher than the R22 failure to use dedicated piping material or improper installation can cause rupture or injury Furthermore it can cause serious accidents such as water leakage electric shock or fire Tool name Contents of change If refrigerant leaks while work is being carried out ventilate the area If the refrigerant comes in contact with a flame it produces a toxic
20. cause serious accidents such as electric shock or fire through exposure to dust or water Never bundle the power supply cable and transmission cable remote controller cable together Separate these cable by 50 mm or more Bundling these cables together will cause miss operation or breakdown Install sleeves into any holes made in the walls for wiring Otherwise a short circuit could result Use the included connection cables and power cables or ones specified by the manufacturer Improper connections insufficient insulation or exceeding the allowable current can cause electric shock or fire Do not modify the power cables use extension cables or use any branches in the wiring Improper connections insufficient insulation or exceeding the allowable current can cause electric shock or fire When handling PCB static electricity charged in the body may cause malfunction of the PCB Follow the cautions below e Establish a ground for the indoor and outdoor units and peripheral devices e Cut power breaker off e Touch metal part of the indoor and outdoor units for more than 10 seconds to discharge static electricity charged in the body e Do not touch terminals of parts and patterns implemented on PCB Match the terminal block numbers and connection cable colors with those of the outdoor unit Erroneous wiring may cause burning of the electric parts En 10 6 1 Electrical requireme
21. connected indoor units does not exceed the 15A If the capacity of connected indoor units exceeds the upper limit either add breakers or use a breaker with a greater capacity B Earth leakage breaker requirements The number of connectable indoor Breaker capacity s units 30 mA 0 1 sec or less 12 or less 100 mA 0 1 sec or less 13 to 40 200 mA 0 1 sec or less 41 to 48 If the total number of units connected to the breaker exceeds 12 either add a 30mA breaker or use breakers with a greater capacity Recommended cable size mm Cable type Remark 1 50 Hz 198 264 V 2 Cable ground 22 AWG LEVEL 4 NEMA non polar 2 core twisted pair solid Type245 IEC57 or equivalent Power supply cable 2 5 LONWORKS compatible cable Remote 0 33 Sheathed PVC Polar 3 core controller cable cable Twisted pair Use shielded cable in accordance with local rules for remote controller cable Transmission cable TRANSMISSION Xt x2 RIS T NI POWER SUPPLY if mo a 8 SEER K Z_ INDOOR UNIT _ INDOOR UNIT INDOOR UNIT xe 4 Ml ae MI ae TRANSMISSION TRANSMISSION TRANSMISSION POWER SUPPLY REMOTE CONTROL POWER SUPPLY REMOTE CONTROL POWER SUPPLY REMOTE CONTROL aoe ony una VAL Y2 3 aoe YA Y2 YS VN BREAKER BREAKER BREAKER aoe 1 2 3 aoe 11213 aoe 1 2 3 POWER SUPPLY POWER SUPPLY POWER SUPPLY REMOTE REMOTE REMOTE CONTROLLER CONTROLLER CONTROLL
22. d Maximum length of cable is 25 m Use an external input and output cable with appropriate external dimension depending on the number of cables to be installed The wire connection should be separate from the power cable line Open circuit voltage lt 5 25 V Short circuit current lt 0 6 mA Short circuit detection resistance R on lt 500 ohm Short circuit detection resistance R orr 2 100 kilo ohm connected unit Select very low current use contacts usable at DC12V DC1mA or less When connected to no voltage terminals of multiple indoor units with a connected unit insulate each indoor unit with relay etc as shown on below example When connected to multiple indoor units directly it will cause breakdown Power supply for relay Operation behavior e Input signal type K1 K6 Relay jeeeeeeoeeuceseebes Indoor unit Indoor unit SeSeececasesseoses fe N _ Indoor unit Device for DC Current The input signal type can be selected It is switched by Dip sw on the indoor unit PCB Dip sw Set 2 2 Input signal type OFF Edge ON Pulse e When function setting is Start Stop mode In the case of Edge input Edge f J mamal Pulse The width of pulse must be longer than 200msec Connector Input signal Command OFF ON Operation POENE ON gt OFF Stop P C B
23. e flare nut always use the flare nut attached to the indoor and outdoor units respectively onto the pipe and perform the flare processing with a flare tool Use the special R410A flare tool or the conventional flare tool Leakage of refrigerant may result if other flare nuts are used 4 Protect the pipes by pinching them or with tape to prevent dust dirt or water from entering the pipes Check if L is flared uniformly B and is not cracked or scratched En 7 Pipe outside Dimension A mm Pian BE Flare nut mm in Tightening torque N m kgf cm diameter Flare tool for R410A mm 6 35 1 4 dia 16 to 18 160 to 180 mm in clutch type 9 52 3 8 dia 32 to 42 320 to 420 6 35 1 4 9 1 12 70 1 2 dia 49 to 61 490 to 610 9 52 3 8 13 2 15 88 5 8 dia 63 to 75 630 to 750 12 70 1 2 0 to 0 5 16 6 19 05 3 4 dia 90 to 110 900 to 1 100 15 88 5 8 19 7 19 05 3 4 24 0 When using conventional flare tools to flare R410A pipes the dimension A should be approximately 0 5 mm more than indicated in the table for flaring with R410A flare tools to achieve the specified flaring Use a thickness gauge to measure the dimension A Loe Pipe outside Width across flats fats diameter mm in of Flare nut mm P 6 35 1 4 17 M N 9 52 3 8 22 j 12 70 1 2 26 lt 15 88 5 8 29 19 05 3 4 36
24. eeeeeeeeeeees 19 4 1 Selecting the pipe material ceeeeeees 7 7 3 Function setting 20 4 2 Pipe requireMent cceccceeeesceeeeeteeeeeeeeeeeeeeees T x f 8 TEST OPERATION 4 3 Flare connection pipe connection 00 7 i 8 1 Test operation using PCB Outdoor unit 20 4 4 Installing heat insulation ceeeeeeeeeeeeeeeees 8 8 2 Test operation using Remote Controller 20 INSTALLING DRAIN PIPES cccccsssssesseseeeeeseeseee 8 9 CHECK LIST dcsscsstassensexssndennsavensceestsercesanoscoueansiaseasane 20 ELECTRICAL WIRING 6 1 Electrical requirement cccccssccssssssssseesssssseseeeeee 11 10 ERROR CODES iitcicsccccsesisssisstcasccernstndacssssicansessesssssees 21 PART NO 9373385110 02 English x 1 SAFETY PRECAUTIONS e 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 e 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 Z WARNING Do not touch refrigerant that has leaked from the refrigerant pipe connections or other area Touching the refrigerant directly can cause frostbite e If a refrigerant leakage occurs during operation immedi
25. emote the wired remote controller En 20 8 TEST OPERATION 8 1 Test operation using PCB Outdoor unit e Refer to the Installation Manual for the outdoor unit if the PCB for the outdoor unit is to be used for the test operation 8 2 Test operation using Remote Controller e Refer to the Installation Manual for the remote controller to perform the test operation using the wireless remote controller When the air conditioner is being test run the OPERATION and TIMER indicator lamps flash slowly at the same time For details please refer to the Manual of IR Receiver Unit or Wired Remote Controller 9 CHECK LIST Pay special attention to the check items below when installing the indoor unit s After installation is complete be sure to check the following check items again CHECK ITEMS If not performed correctly Has the indoor unit been Vibration noise installed correctly indoor unit may drop Has there been a check for gas leaks refrigerant No cooling No heating pipes Has heat insulation work been completed Does water drain easil from the indoor units Is the voltage of the power source the same No operation heat or as that indicated on the burn damage label on the indoor unit Are the wires and pipes No operation heat or all connected completely burn damage Is the indoor unit er grounded Short circuit Is the connection cable No operat
26. ge detector for HFC detector refrigerant R410A 2 ABOUT THE UNIT 2 1 Precautions for using the R410A refrigerant 2 3 Accessories Z WARNING Z WARNING e Do not introduce any substance other than the prescribed refrigerant into the refrigeration cycle If air enters the refrigeration cycle the pressure in the refrigeration cycle will become abnormally high and cause the piping to rupture e 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 to fall water leakage electric shock or fire e The following installation parts are furnished Use them as required e If there is a refrigerant leakage make sure that it does not exceed the concentration limit If a refrigerant leakage exceeds the concentration limit it can lead to accidents such as oxygen starvation e Keep the Installation Manual in a safe place and do not discard any other accessories until the installation work has been completed En 2 Do not discard any accessories needed for installation until the installation work has been completed Name and Shape Application t This book Installation Manual For fixing the connection pipe Large and Small ip and drain cap Binder Large a Binder Medium Coupler heat insula
27. hten the flare nuts with a torque wrench using the specified tightening method Otherwise the flare nuts could break after a prolonged period causing refrigerant to leak and generate a hazardous gas if the refrigerant comes into contact with a flame Tighten with 2 wrenches Holding wrench Torque wrench Plate nut Indoor unit pipe Body side Connection pipe En 8 e After checking for gas leaks refer to the Installation Manual of the outdoor unit perform this section e Install heat insulation around both the large gas and small liquid pipes Failure to do so may cause water leaks 5 INSTALLING DRAIN PIPES Use general hard polyvinyl chloride pipe and connect it with adhesive polyvinyl chloride so that there is no leakage Always heat insulate the indoor side of the drain hose Use a drain hose that matches the size of the drain pipe Do not perform a rise trap and air bleeding e Provide a downward gradient 1 100 or more e Provide supporters when long pipes are installed e Use an insulation material as needed to prevent the pipes from freezing e Install the pipes in a way that allows for the removal of the control box Right side 240 mm Liquid pipe EE Gas pipe x 8 Drain port Left side 240 mm Drain port The drain cap is attached at the factory setting 32 mm e When the unit is ship
28. ion heat or the specified thickness burn damage Are the inlets and outlets No cooling No heating free of any obstacles Does start and stop air conditioner operation N by remote controller G operadon or external device After installation is completed has the proper operation and handling been explained to the user 10 ERROR CODES If you use a wired type remote controller error codes will appear on the remote controller display If you use a wireless remote controller the lamp on the photodetector unit will output error codes by way of blinking patterns See the lamp blinking patterns and error codes in the table below Error display eee Tia la Remarc indicator indicator indicator controller lamp lamp green red Error CODE Wired Error contents Remote controller communication error Anomalous network communications Parallel 1 6 communication error Power Model information error EEPROM accession error Room temperature thermistor error Indoor heat exchanger temperature thermistor error Indoor fan Outdoor unit 0 15 es Display mode 0 5s ON 0 5s OFF 0 1s ON 0 1s OFF Number of flashing Wired Remote Controller Display Error code SU MO TU WE lji FR SA E iy r BEBE I For details on marking the ERROR CODES please refer to the Manual of IR Receiver Unit or Wired Remote Controller En 21
29. ipes be sure to blow dry nitrogen gas through them 4 1 Selecting the pipe material Z CAUTION Do not use existing pipes e Use pipes that have clean external and internal sides without any contamination which may cause trouble during use such as sulfur oxide dust cutting waste oil or water e It is necessary to use seamless copper pipes Material Phosphor deoxidized seamless copper pipes It is desirable that the amount of residual oil is less than 40 mg 10 m Do not use copper pipes that have a collapsed deformed or discolored portion especially on the interior surface Otherwise the expansion valve or capillary tube may become blocked with contaminants Improper pipe selection will degrade performance As an air conditioner using R410A incurs pressure higher than when using conventional refrigerant it is necessary to choose adequate materials Thicknesses of copper pipes used with R410A are as shown in the table e Never use copper pipes thinner than those indicated in the table even if they are available on the market Thicknesses of Annealed Copper Pipes R410A Pipe outside diameter mm in Thickness mm 6 35 1 4 0 80 9 52 3 8 0 80 12 70 1 2 0 80 15 88 5 8 1 00 19 05 3 4 1 20 4 2 Pipe requirement Z CAUTION e Refer to the Installation Manual of the outdoor unit for description of the length of connecting
30. is a risk that the unit will come loose Please take care 3 3 1 Installing the hangers Hanging bolt installation diagram Top side 740 mm X477 mm 1 135 mm 1 177 mm Right side ee 1S a G Q 270 mm Air Z WARNING e When fastening the hangers make the bolt positions uniform The distance of x is adjustable according to the place of the hanging bolts MAX 550 mm MIN 410 mm Slide the unit in the arrow direction and fasten it Hanging bolt M10 Field supply Special nut A Accessories Washer Field supply Special nut B Accessories Hanger Accessories 9 81 to 14 71 N m Bolt Strength Z WARNING e Fasten the unit securely with special nuts A and B 3 3 2 Leveling Base vertical direction leveling on the unit right and left i ey EA La Right side Level meter AIR Base horizontal direction leveling on top of the unit 0 5 mm Drain hose Give a slight tilt to the side to which the drain hose is connected The tilt should be in the range of 0 mm to 5 mm 3 3 3 Intake duct Follow the proceduce in the following figure to the ducts 1 015 mm ILo d 240 mm The air inlet duct can be changed by replacing the intake grille and flange For the bottom air intake fol
31. low the procedure of gt for installation The factory setting is back air intake A CAUTION e When air is taken in from the bottom side the operating sound of the product will easily eater the room Install the product and intake grilles where the affect of the operating sound is small e Install the product and intake grilles where the affect of the operating sound is small 3 3 4 Outlet duct Duct installation pattern jj CUT PART Round duct outlet x 4 Factory setting Square duct e When using the square duct follow the procedure below to process outlet duct 1 Cut the slit seam lt gt with a cutter 2 Turn up the insulation around the points to be cut ac cording to the outlet port shape working points so that the insulation does not stick out at the 0 part Cut Cut 3 Cut with nippers and remove the sheet metal En 5 e The screw holes to install the flange are located behind the round cutouts in the insulation Z CAUTION e When removing the cabinet iron plate be careful not to damage the indoor unit internal parts and surrounding area outer case e When processing the cabinet iron plate be careful not to injure yourself with burrs etc Z CAUTION To prevent people from touching the parts inside the unit be sure to install grilles on the inlet and outlet ports The grilles must be designed
32. ng When using the ARXB24 30 36 45L model with external Static Pressure under 40 Pa the Wire FAN MOTOR must be replaced as explained below Replacement method 1 Remove the cover 2 Remove the Wire TYPE A connector from Wire FAN MOTOR 3 Remove the Wire TYPE A connector from CN4 of the PCB 4 Insert the Wire TYPE B connector into CN4 of the PCB 5 Insert the Wire TYPE B connector into Wire FAN MOTOR 6 Insert the cover En 13 En 14 ARXB24 ARXB30 ARXB36 BLACK WHITE RED BLUE PINK PURPLE ARXB45 BLACK WHITE RED PINK PURPLE BLUE Factory setting Standard static pressure BLACK WHITE PINK PURPLE BLUE Accessories Low static pres sure 6 6 External input and external output Optional parts Output terminal Output terminal Controller PCB EN23 CN22 Input terminal CN27 Output terminal CN24 1 External input terminals Indoor unit can be Start Stop or Emergency stop by using indoor unit PCB CN27 Wiring methods and specifications A twisted pair cable 22AWG should be use
33. ng the address 2 Remote controller settings Refer to the wired or wireless remote controller manual for detailed setting information Set IU AD REF AD SW to 0 3 Automatic address settings Refer to the outdoor unit manual for detailed setting information Set IU AD REF AD SW to 0 Z CAUTION e Be sure to turn OFF the power before performing the field setting 7 1 Setting the address Z CAUTION e Use an insulated screwdriver to set the dip switches SWSWSWSW Dip switch SET 3 Rotary switch Example 0 B v r w 9g Rotary switch Example 0 A oo SE v 907 Setting me example iy 2 P 9ga Indoor unit address 907 P oa 9g IU ADX1 997 amp vn a 9g REF ADx1 IU ADx10 997 Refrigerant Setting e a circuit example address 63 S REF ADx10 1 Indoor unit address If 4 indoor units are connected Rotary switch IU AD x 1 Factory setting 0 Rotary switch IU AD x 10 Factory setting 0 When connecting multiple indoor units to 1 refrigerant Indoor unit Indoor unit Indoor unit Indoor unit system set the address at IU AD SW as shown in the Table A RC SW RC T SW RC z
34. nt Voltage rating 230 V Operating range 198 to 264 V Select the power cable type and size in accordance with relevant local and national regulations e Specifications for local wiring power cord and branch wiring are in compliance with local code e Max wire length Set a length so that the voltage drop is less than 2 Increase the wire diameter when the wire length is long Refer to the table for the breaker specifications of each installation condition Perform the power crossover wiring within the range of the same refrigerant system When the crossover wiring is done make a connection for indoor units to satisfy conditions A and B below A Current breaker requirements POWER SUPPLY CETTE 6 2 Wiring method EXAMPLE OUTDOOR UNIT Eo Model MCA MFA ARXB24LATH 0 78A ARXB30LATH 1 02A ARXB36LATH 1 48 A ARXB45LATH 1 88 A ARXA24LATH 1 07 A aii ARXA30LATH 1 08 A ARXA36LATH 1 79 A ARXA45LATH 1 79 A MCA Minimum Circuit Ampacity MFA Maximum Fuse Ampacity When the power crossover wiring is done make it so that the total of the MCA of the
35. ped from the factory the drain port is on the right side control box side e When using the drain port on the left side of the unit rein stall the drain cap to the right side drain port 32 mm VP25 Binder Large Drain cap Accessories CAG e Cover the drain cap with the drain hose insulation Drain hose insulation INSTALL THE DRAIN HOSE Accessories Unit in 0 mm gt Working procedure 1 Install the attached drain hose to the drain port of the body Install the hose band from the top of the hose within the graphic display area Secure firmly with the hose brnd 2 Use vinyl adhesive agent to glue the drain piping PVC pipe VP25 which is prepared on site or socket Apply color ad hesive agent evenly until the gauge line and seal 3 Check the drainage 4 Install the heat insulation 5 Use the attached heat insulation to insulate the drain port and band parts of the body Drain hose insulation Accessories Ensure there is no space Hose Band Accessories Soft PVC side Drain pan Drain hose 10 15mm_ Accessories Applying area of Hard PVC side 2dhesive _ Joint pipe Field supply Drain pipe VP25 Field supply 4 mm or less Wrap the Drain hose insulation around th e drain hose connection Drain hose insulation Accessories Drain pan Drain hose 100mm Hose opening view Wind the attached heat insulation around the hose band Make sure
36. pipe or for difference of its elevation e Use pipe with water resistant heat insulation Z CAUTION e Install heat insulation around both the gas and liquid pipes Failure to do so may cause water leaks Use heat insulation with heat resistance above 120 C Reverse cycle model only In addition if the humidity level at the installation location of the refrigerant piping is expected to exceed 70 install heat insulation around the refrigerant piping If the expected humidity level is 70 80 use heat insulation that is 15 mm or thicker and if the expected humidity exceeds 80 use heat insulation that is 20 mm or thicker If heat insulation is used that is not as thick as specified condensation may form on the surface of the insulation In addition use heat insulation with heat conductivity of 0 045 W m K or less at 20 C 4 3 Flare connection pipe connection Z WARNING e Tighten the flare nuts with a torque wrench using the specified tightening method Otherwise the flare nuts could break after a prolonged period causing refrigerant to leak and generate a hazardous gas if the refrigerant comes into contact with a flame 4 3 1 Flaring e Use special pipe cutter and flare tool exclusive for R410A 1 Cut the connection pipe to the necessary length with a pipe cutter 2 Hold the pipe downward so that cuttings will not enter the pipe and remove any burrs 3 Insert th
37. tion Small For transmission and remote controller cable binding For indoor side pipe joint Small Coupler heat insulation Large 6 Special nut A Large flange For indoor side pipe joint Large Special nut B Small flange For suspending the indoor unit from ceiling Drain hose For installing drain pipe VP25 0 D 32 1 D 25 Hose band For installing drain hose Insulates the drain hose and drain cap Attached only ARXB24 30 36 45L model Use for static pressure under 40 Pa For suspending the indoor unit from ceiling 4 2 4 Optional parts When connecting the square duct and round duct use the optional square flange or round flange Square flange Model name UTD SF045T P N 9098180007 40 mm 206 mm Round flange Model name UTD RF204 P N 9093160004 205 mm 85 mm Long life filter Model name UTD LF25NA P N 9079892004 I E E e gt mM li 507 mm zl Other optional parts Description Parts Application External output wire P N 9368778002 S a output External input wire P N 9368779009 a input Remote sensor UTD RS100 Room temperature sensor IR receiver unit UTB WC cee remote controller Drain pump unit UTZ PX1NBA When installing please refer to the installation manual of each optional part 3 INSTALLATION WORK Especially the installation place is very important
38. tor int change to setting 01 If interval 02 Shorter the notification is too late change to setting 02 DESEE o1 Disable Enable or disable the Filter r filter indicator Setting 02 indi Displa A indicator onon is for use with a central action central remote controller remote controller 00 Default Adjust the cool air trigger Cool ai temperature To lower the Onza Adjust 1 rigger temperature use temperature tri setting 01 To raise the rigger 02 Adjust 2 trigger temperature use setting 02 o0 Default Adjust the hot air trigger temperature To lower Adjust 1 the trigger temperature Hot ai by 6 degrees C use onal 1 Adjust 2 setting 01 To lower the igen trigger temperature by 4 rigger degrees C use setting 03 Adjust 3 02 To raise the trigger temperature use setting 03 A 00 Enabie Enable or disable auto on matic system restart after Allow an external controller to start or stop Start Stop the system or to perform an emergency stop If an emergency stop is performed from an external controller all refrigerant systems will be disabled If forced stop is set indoor unit stops by the input to the external input terminals and Start Stop by a remote controller is restricted External Emergency control stop All Change the target for Display reporting errors Errors only on can either be reported in central all locations or only on r
39. vicing etc into consideration and leave the spaces Also install the unit where the filter can be removed 10 Providing as much space as possible between the indoor unit and the ceiling will make work much easier 11 If installing in a place where its humidity exceeds 80 use heat insulation to prevent condensation 3 2 Installation dimensions Provide the space around the unit as shown in the following figure le ee A OOOO Ly 400 mm or more 150 mm or more 1 31 400mm or more when drain from drain pipe En 4 e Provide a service hole for inspection purposes Do not place any wiring or illumination in the service space as they will impede service e When an air filter is installed on the air inlet provide enough service space to replace the filter Air 300mm 4 4 or more oo 500 mm or more 500 mm or more Air Air 300 mm i Bi Service space 1 Intake panel u 500 mm or more Control box 1 550 mm or more Air 3 3 Installing the unit A WARNING e Install the air conditioner in a location which can withstand a load do at least 5 times the weight of the main unit and which will not amplify sound or vibration If the installation location is not strong enough the indoor unit may fall and cause injuries If the job is done with the panel frame only there
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