INSTALLATION MANUAL
Contents
1. Is operation of each button on the remote control unit normal Does each lamp light normally Do air flow direction louvers operate normally Is the drain normal Do not have an abnormal noise and vibration during operation e Do not operate the air conditioner in test run for a long time deb 1 Operation method e Forthe operation method refer to the operating manual e The outdoor unit may not operate depending on the room temperature In this case keep on pressing the MANUAL AUTO button of the indoor unit for more than 10 seconds The operation indicator lamp and timer indicator lamp will begin to flash simultaneously during cooling test run Then heating test run will begin in about three minutes when HEAT is selected by the remote control operation Please follow the operating manual for remote control operation e To end test operation press the remote controller START STOP button This procedure changes to the function settings used to control the indoor unit according When the air conditioner is running by pressing the test run button the OPERATION to the installation conditions Incorrect settings can cause the indoor unit to malfunction Lamp and TIMER Lamp will simultaneously flash slowly 3 After the power is turned on perform the FUNCTION SETTING according to the installation conditions using the remote controller Using the wired remote control Option The settings may be se2. Indoor unit pipe Connection pipe Table 1 Flare nut size and tightening torque Diameter mm X Torque N m 6 35 mm dia 17 X16 18 9 52 mm dia 22 X 32 42 12 7 mm dia 26 X 49 61 Table 2 Pipe outside diameter Flare tool for Conventional R22 flare tool o 6 35 mm 1 4 o 9 52 mm 3 8 o 12 7 mm 1 2 Fasten a flare nut with a torque wrench as instructed in this manual If fastened too tight the flare nut may be broken after a long period of time and cause a leakage of refrigerant Pipe outside diameter During installation make sure that the refrigerant pipe is attached firmly before you run the compressor Do not operate the compressor under the condition of refrigerant piping not attached properly with 2 way or 3 way valve open This may cause abnormal pres sure in the refrigeration cycle that leads to breakage and even injury 5 4 Air purge Always use a vacuum pump to purge the air Refrigerant for purging the air is not charged in the outdoor unit at the factory Close the high pressure side valve of the gauge manifold fully and do not operate it during the following work Refrigerant must not be discharged into atmosphere After connecting the piping check the joints for gas leakage with gas leak detector 1 Check if the piping connections are secure 2 Check that the stems of 2 way valve and 3 way valve are closed fully 3 Connect the gauge manifold charge hose to the
3. 1 2 to 1 8 12 to 18 3 Connect the end of the connection cable fully inserting into the terminal block 4 Fasten the connection cable with a cable clamp di N CAUTION Wire cover __W Cable clamp BIA Match the terminal block numbers and connection cable colors with those of the E E e outdoor unit Screw pai Ai Screw 2 Erroneous wiring may cause burning of the electric parts ege ibd S l a ara Connect the connection cables firmly to the terminal block Imperfect installation may n cause a fire Eopficcineabie Always fasten the outside covering of the connection cable with the cable clamp If the insulator is chafed electric discharge may occur Always connect the ground wire aA i ei Do not use the earth screw of the indoor unit for the connection other than a specified E 7 Wire cover Cable clamp outdoor unit Screw Screw CES iz Connection cable Insert the wire cover tab into the square hole Connection cable of the indoor unit and fasten with a screw En 6 1 Insulate between pipes nsulate suction and discharge pipes separately Forrear right and bottom piping overlap the connection pipe heat insulation and indoor unit pipe heat insulation and bind them with vinyl tape so that there is no gap Forleft and left rear piping butt the connection pipe heat insulation and indoor unit pipe heat insulation together and bind them with and
4. 6 PUMP DOWN 6 1 Pump down PUMP DOWN OPERATION FORCED COOLING OPERATION To avoid discharging refrigerant into the atmosphere at the time of relocation or disposal recover refrigerant by doing the cooling operation or forced cooling operation according to the following procedure When the cooling operation cannot start in winter and so on start the forced cooling operation 1 Do the air purging of the charge hose by connecting the charging hose of gauge mani fold to the charging port of 3 way valve and opening the low pressure valve slightly 2 Close the valve stem of 2 way valve completely 3 Start the cooling operation or following forced cooling operation Keep on pressing the MANUAL AUTO button of the indoor unit for more than 10 seconds The operation in dicator lamp and timer indicator lamp will begin to flash simultaneously during test run The forced cooling operation cannot start if the MANUAL AUTO button is not kept on pressing for more than 10 seconds 4 Close the valve stem of 3 way valve when the reading on the compound pressure gage becomes 0 05 0 Mpa 0 5 0 kg cm2 5b Stop the operation Press the START STOP button of the remote control unit to stop the operation Press the MANUAL AUTO button when stopping the operation from indoor unit side It is not necessary to press on keeping for more than 10 seconds During the pump down operation make sure that the compressor is turned off before you
5. CAUTION cei For left outlet piping Install the wall hook bracket level both horizontally and vertically H OO cut off the piping ee outlet cutting groove E C with a hacksaw T C O a ENS SET C Q Refrigerant pipes top Rear piping Indoor unit drain hose bottom 6 5 Forming the drain hose and pipe Rear piping Right piping Bottom piping Install the indoor unit piping in the direction of the wall hole and bind the drain hose and pipe together with vinyl tape Install the piping so that the drain hose is at the bottom Indoor unit drain hose Drain cap Remove the drain cap by pull ing at the projection at the end of the cap with pliers etc Wrap the pipes of the indoor unit that are visible from the outside with decorative tape For Left rear piping Left piping Interchange the drain cap and the drain hose Removal method of drain hose Remove the screw at the left of drain hose and pull out drain hose Installation method of drain hose Vertically insert the drain hose toward the inside so that the drain fixture white can ac curately align with the screw hole around the drain cock After inserting and before replacing please reinstall and fix the removed screws N CAUTION Insert drain hose and drain cap securely Drain should slope down to avoid water leakage When inserting be sure not to attach any material besides water If any other material is attached it will c
6. THE UNIT sri Neger Ee 1 3 SELECTING THE MOUTING POSITION nene 2 4 INSTALLATION DIAGRAM ccccccececccceccececcecececcecuccuceccececuccucuccuceueucecaucecueeesaees 2 5 INSTALLATION EE 2 6 PUMP DOMI a PAGES ESA GIO RARE ORARIE IEEE A RU R eR EG SSES iii 4 1 SAFETY PRECAUTIONS 1 1 For authorized service personnel only This mark indicates procedures which if improperly per WARNING m formed might lead to the death or serious injury of the user For the room air conditioner to operate satisfactory install it as outlined in this installa tion manual Connect the indoor unit and outdoor unit with the air conditioner piping and cords avail able standards parts This installation manual describes the correct connections using the standard accessories and the parts specified in this installation manual Have installation work done by authorized service personnel only Do not use an extension cord Do not turn on the power until all installation work is complete This mark indicates procedures which if improperly performed might possibly result in personal harm to the user or damage to property N CAUTION When installing pipes shorter than 3 m sound of the outdoor unit will be transferred to the indoor unit which will cause large operating sound or some abnormal sound This installation manual describes how to install the outdoor unit only To install the indoor unit refer to the installation manu
7. electrical appliances When the current contracted capacity is insufficient change the contracted capacity When the voltage is low and the air conditioner is difficult to start contact the power company the voltage raised 2 4 Electric requirement Electric wire size and fuse capacity 12 000 14 000 BTU class Power supply cord mm 1 5 Connection cord mm 1 5 or 1 Fuse capacity A 15 Use conformed cable with Type245 IEC57 Install all electrical works in accordance to the national standard Install the disconnect device with a contact gap of at least 3 mm in all poles nearby the units Both indoor unit and outdoor unit Install the circuit breaker nearby the units 2 5 Accessories 2 6 Additional charge Refrigerant suitable for a piping length of 15 m is charged in the outdoor unit at the factory When the piping is longer than 15 m additional charging is necessary For the additional amount see the table below Pipe length Additional refrigerant 100 g 20 g m CAUTION When adding refrigerant add the refrigerant from the charging port at the completion of work The maximum length of the piping is 20 m If the units are further apart than this correct operation can not be guaranteed Between 15 m and 20 m when using a connection pipe other than that in the table charge additional refrigerant with 20 g 1 m as the criteria 3 SELECTING THE MOUNTING POSITION Decide the mount
8. pipes thinner than 0 8mm even when it is available on the market Thicknesses of Annealed Copper Pipes Br eee RATOA 080 0 80 0 80 Do not use the existing for R22 piping and flare nuts If the existing materials are used the pressure inside the refrigerant cycle will rise and cause failure injury etc Use the special R410A materials Thickness mm When installing and relocating the air conditioner do not mix gases other than the specified refrigerant R410A to enter the refrigerant cycle If air or other gas enters the refrigerant cycle the pressure inside the cycle will rise to an abnormally high value and cause failure injury etc The rated voltage 230V AC 50Hz N WARNING The rated voltage of this product is 230 V AC 50 Hz Before turning on the power check if the voltage is within the 220 V 10 to 240 V 10 range Always use a special branch circuit and install a special receptacle to supply power to the room air conditioner Use a circuit breaker and receptacle matched to the capacity of the air conditioner Do not extend the power cable Perform wiring work in accordance with standards so that the air conditioner can be operated safely and positively Install a leakage circuit breaker in accordance with the related laws and regulations and electric company standards CAUTION The power source capacity must be the sum of the air conditioner current and the cur rent of other
9. run unfinished Indoor unit capacity error Combination error Indoor unit PCB model information error Manual auto switch error Room temp sensor error Indoor unit Heat Ex Middle temp sensor error Indoor unit fan motor error Drain pump error Damper error m REES e Tal e Tal m Indoor unit error Outdoor unit main PCB model e 6 e 2 gt information error or communication error Inverter error Active filter error PFC circuit er ror Trip terminal L error Display PCB microcomputers Discharge temp sensor error Compressor temp sensor error 7 3 Outdoor unit Heat Ex liquid e e 5 temp sensor error Outdoor temp sensor error Suction Gas temp sensor error e 7 e 6 e 2 way valve temp sensor error e 3 way valve temp sensor error Heat sink temp sensor error Sub cool Heat Ex gas inlet temp sensor error 8 2 es et Sub cool Heat Ex gas outlet temp sensor error Liquid pipe temp sensor error Current sensor error Discharge pressure sensor error e 8 e 6 Suction pressure sensor error High pressure switch error Trip detection 9 5 o Compressor rotor position e 9 e 5 detection error permanent stop Outdoor unit fan motor error e 9 7 4 way valve error em om o gg errr Discharge temp error Compressor temp error High pressure error Low pressure error Display mode e 0 5s ON 0 5s OFF 0 18 ON 0 1s OFF Number of flashing Troubleshooting
10. torque wrench using the specified tightening method Otherwise the flare nuts could break after a prolonged period causing refrigerant to leak and generate hazardous gas if the refrigerant comes into contact with a flame N CAUTION Connect the piping so that the control box cover can easily be removed for servicing when necessary In order to prevent water from leaking into the control box make sure that the piping is well insulated When the flare nut is tightened properly by your hand hold the body side coupling with a wrench then tighten with a torque wrench See the table below for the flare nut tightening torques Tighten with two wrenches Holding wrench Flare nut Torque wrench Indoor unit pipe Body side Connection pipe Flare nut mm in 6 35 1 4 dia 9 52 3 8 dia Tightening torque N m kgf cm 16 to 18 160 to 180 32 to 42 320 to 420 49 to 61 490 to 610 63 to 75 630 to 750 90 to 110 900 to 1 100 12 70 1 2 dia 15 88 5 8 dia 19 05 3 4 dia 7 ELECTRICAL WIRING 7 3 How to connect wiring to the terminals Caution when wiring cable When stripping off the insulation of a lead wire always use a special tool such as a wire stripper If there is no special tool available carefully strip the insulation with a knife etc 1 Use crimp type terminals with insulating sleeves as shown in the figure below to con nect to the terminal block A WARNING 2 Securely clamp
11. turn off the power and turn it on again excom Come OUTDOOR UNIT 13 FUNCTION SETTING GTIMER SELECT v Perform the FUNCTION SETTING according to the installation conditions using the remote Quaocanst wer controller N CAUTION CAUTION After turning off the power wait 10 seconds or more before turning on it again The Function Setting does not become active unless the power is turned off then on again Confirm whether the wiring work for Outdoor unit has been finished Confirm that the cover for the electrical enclosure on the outdoor unit is in place En 8 Filter Sign The indoor unit has a sign to inform the user that it is time to clean the filter Select the time setting for the filter sign display interval in the table below according to the amount of dust or debris in the room If you do not wish the filter sign to be displayed select the set ting value for No indication Factory setting Function Setting Description Setting Value Standard 400 ous Standard 400 ous hours Longinterval 1 000 hours interval 1 000 hours Short interval 200 hours e Nomdeaion indication Cooling Room Temperature Correction Depending on the installed environment the room temperature sensor may require a cor rection The settings may be selected as shown in the table below Facto
12. vinyl tape so that there is no gap For left and left rear piping wrap the area which accommodates the rear piping housing section with cloth tape Forleft and left rear piping bind the connection cable to the top of the pipe with vinyl tape Forleft and left rear piping bundle the piping and drain hose together by wrapping them with cloth tape over the range within which they fit into the rear piping housing section 2 Temporarily fasten the connection cable along the connection pipe with vinyl tape Wrap to about 1 3 the width of the tape from the bottom of the pipe so that water Mounting shaft does not enter i Bearing 3 Fasten the connection pipe to the outside x d D T AP wall with a saddle etc Edd Front panel 4 Fill the gap between the outside wall pipe hole and the pipe with sealer so that rain water and wind cannot blow in b Fasten the drain hose to the outside wall etc l Intake grille e P 2n Knob A Intake grille Outside wall cap Saddle Sealer putty Outdoors Field supplied Pipe Wall id Overlap the insulation Connection pipe heat insulation Indoor unit pipe heat insulation Bind the pipes together Vinyl tape so that there is no gap Pipe Left piping For connection from the left rear Connection cable Wall pipe Connection cable Drain hose Connection pipe Drain hose Check the following GOOD
13. water may freeze and may stop up the drain or cause other outdoor unit trouble Therefore take measures so that the drain water will not freeze and clog the drain In the area with heavy snowfall if the intake and outlet of outdoor unit is blocked with snow it might become difficult to get warm and it is likely to cause of the breakdown Please construct a canopy and a pedestal or place the unit on a high stand local configured If children under 10 years old may approach the unit take preventive measures so that they cannot reach the unit 4 INSTALLATION DIAGRAM Pei it tit tie ire ei ite ei Conform to Type245 IEC57 OUTDOOR UNIT 10 cm or over 60 cm or over 10 cm or over 5 cm or 20 cm or over CCT o N lt D Y A 5 cm or over e Do not directly install it on the ground otherwise it will cause failure e To obtain better operation ef ficiency when the outdoor unit is installed be sure to open the Outdoor unit ont and left side bottom Aom Q b Drain pipe Drain hose Ld 32 cm CAUTION When the outdoor temperature is 0 C or less do not use the accessory drain pipe and drain cap If the drain pipe and drain cap are used the drain water in the pipe may freeze in extreme cold weather Reverse cycle model only In the area with heavy snowfall if the intake and outlet of outdoor units blocked wi
14. with the indoor unit display OPERATION 2 OPERTION lamp green TIMER C 2 TIMER lamp orange ECONOMY 2 ECONOMY lamp green Troubleshooting with the Wired Remote Controller Display Option If an error occurs the following display will be shown Er will appear in the set room temperature display Error code En 10 9 3 Rimozione del pannello frontale 1 Rimuovere la griglia di aspirazione consultare le istruzioni per la rimozione della griglia di aspirazione 2 Rimuovere la copertura del cavo 3 Rimuovere le 3 viti It 7 AIR CONDITIONER OUTDOOR UNIT INSTALLATION MANUAL INSTALLATION MANUAL For authorized service personnel only INSTALLATIONSANLEITUNG Nur f r autorisiertes Personal MANUEL D INSTALLATION Pour le personnel agr uniquement MANUAL DE INSTALACI N Solo para personal autorizado MANUALE D INSTALLAZIONE Ad uso esclusivo del personale autorizzato ET XEIPIAIO ETKATAZTAZH ia ECOUDIOOOTNUEVO TPoOowWITTIK OEPBIC MANUAL DE INSTALACAO Apenas para t cnicos autorizados PYKOBOJ_ICTBO MO YCTAHOBKE Dna ynonHomoveHHoro nepcoHana KURULUM KILAVUZU Yetkili servis personeli igindir m Im teren EEN ETE PART NO 9319205014 AIR CONDITIONER OUTDOOR UNIT INSTALLATION MANUAL 9319205014 Contents 1 JGAPELYIPBRHEGAUTTOnNDS EE 1 2 ABOUT
15. AIR CONDITIONER INDOOR UNIT Compact Wall Mounted Type INSTALLATION MANUAL INSTALLATION MANUAL For authorized service personnel only INSTALLATIONSANLEITUNG Nur f r autorisiertes Personal MANUEL D INSTALLATION Pour le personnel agr uniquement MANUAL DE INSTALACI N Solo para personal autorizado MANUALE D INSTALLAZIONE Ad uso esclusivo del personale autorizzato ET XEIPIAIO EFKATAZTAZH2 id EECOUDIOOOTNUEVO TIPOOWTTIKO OEPBIC MANUAL DE INSTALACAO Apenas para t cnicos autorizados PYKOBOJ_ICTBO MO YCTAHOBKE Dna ynonnowouenHoro nepcoHara KURULUM KILAVUZU Yetkili servis personeli icindir mm mum ens m m mmm mmm a PART NO 9332279085 02 AIR CONDITIONER Compact Wall Mounted Type INSTALLATION MANUAL P N 9332279085 02 Contents 1 SAFETY PRECAUTIONS eee 1 CHEN o6 ER GE CH NEEN 1 3 Silii EEN 2 4 ELECTRICAL REQUIREMENT eege 2 b SELECTING THE MOUNTING POSITION 5 aora corone corra iaia EE 3 6 INSTALLATION WORK EE 3 Za ELEC PRIGAL WIRIIN LER 6 MEME Mr Le EE 7 9 FRONT PANEL REMOVAL AND INSTALLATION een 7 10 TESI R N EE 7 11 REMOTE CONTROLLER INSTALLATION eee mnn 8 12 OPTIONAL KIT INSTALLATION OPTION ai ira 8 13 FUNCTION KE pt CT EEN 8 14 CUSTOMER GUIDANCE rip ide 9 t5 Th 10 1 SAFETY PRECAUTIONS Be sure to read this Manual thoroughly before installation e The warnings and precautions indic
16. Drain hose Saddle 9 FRONT PANEL REMOVAL AND INSTALLATION NO GOOD NO GOOD NO GOOD ia Lifted up Wave Endin water 9 1 Intake grill removal 1 Open the intake grille 2 Pull down the knob 3 Lift the intake grille upward until the axle at the top of the intake grille is removed 9 2 Intake grill installation 1 The fixing axle of the intake grille is installed on the Panel 2 Lay down the intake grille En 7 9 3 Front panel removal 1 Remove intake grille Reference the intake grille removal 2 Remove wire cover 3 Remove 3 screws Screws 3 position Screws Wire cover Wire cover Push the A marks Wall hook bracket 4 The front panel is pulled to the front raising the upper surface and a front panel is removed Front panel 9 4 Front panel installation 1 First fit the lower part of the front panel and insert top and bottom hooks 3 top sides 6 bottom sides 2 center Bottom hooks 6 position F el Indoor unit Bottom holes 6 position Top hooks 8 position Top holes 3 position Front panel Center hooks Indoor unit 2 position Latchs 2 position 2 Attach the 3 screws 3 Attach the wire cover 4 Attach the intake grille Install the Front panel and Intake grille securely If installation is imperfect the Front panel or Intake grille may fall off and cause injury 10 TEST RUN Check items
17. If you use a signal code other than signal code A reset the signal code after replacing the batteries If you do not know the air conditioner signal code setting try each of the signal codes He p until you find the code which operates the air conditioner STEP 2 Selecting the Function Number and Setting Value 1 Press the SET TEMP A V buttons to select the function number Press the 10 C HEAT button to switch between the left and right digits 2 Press the POWERFUL button to proceed to setting the value Press the POWERFUL button again to return 12 0PTIONAL KIT INSTALLATION OPTION to the function number selection Function number This air conditioner can be connected with the following optional kits 8 Press the SET TEMP A V buttons to select the Wired remote controller setting value Press the 10 C HEAT button to switch e Simple remote controller between the left and right digits EES 4 Press the MODE button and START STOP button in the order listed to confirm the settings NOTE SCH b Press the RESET button to cancel the function set 2 Optional communication kit is required when connecting a wired remote controller or us _ ing the External Input Output kit See the communication kit for installation and operation ting mode instructions 6 After completing the FUNCTION SETTING be sure a T to
18. al included with the indoor unit Be careful not to scratch the air conditioner when handling it After installation explain correct operation to the customer using the operating manual Let the customer keep this installation manual because it is used when the air condi tioner is serviced or moved The maximum length of the piping is 20 m The maximum height difference of the pip ing is 15 m if the units are further apart than these correct operation can not be guar anteed 2 ABOUT THE UNIT 2 1 Precautions for using R410A refrigerant The basic installation work procedures are the same as conventional refrigerant R22 models However pay careful attention to the following points Since the working pressure is 1 6 times higher than that of conventional refrigerant R22 models some of the piping and installation and service tools are special See the table below Especially when replacing a conventional refrigerant R22 model with a new refrigerant R410A model always replace the conventional piping and flare nuts with the R410A piping and flare nuts Models that use refrigerant R410A have a different charging port thread diameter to pre vent erroneous charging with conventional refrigerant R22 and for safety Therefore check beforehand The charging port thread diameter for R410A is 1 2 inch En 1 Be more careful that foreign matter oil water etc does not enter the piping than with refrigerant R22 m
19. ated in this Manual contain important information pertaining to your safety Be sure to observe them Hand this Manual together with the Operating Manual to the customer Request the customer to keep them on hand for future use such as for relocating or repairing the unit This mark indicates procedures which if improperly per N WARNING i formed might lead to the death or serious injury of the user Request your dealer or a professional installer to install the indoor unit in accordance with this Installation Manual An improperly installed unit can cause serious accidents such as water leakage electric shock or fire If the indoor 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 be fore the work is completed can cause serious accidents such as electric shock or fire 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 gas Installation work must be performed in accordance with national wiring standards by authorized personnel only This mark indicates procedures which if improperly performed might possibly result in personal harm to the user or damage to property Read carefully all security information before use or install the air conditioner Do not attempt to insta
20. ated staples or clamps for connecting wire See your local electrical codes C Putty D Refrigeration lubricant E Clamps or saddles to secure refrigerant piping 4 ELECTRICAL REQUIREMENT The indoor unit is powered from the outdoor unit Do not power indoor unit from separate power source N WARNING Refer to local codes for acceptable cable type Cable Cabesze Remarks 3 cable Ground 1 230 V Connection cable Type 60245 IEC 57 1 5 mm Max Cable Length Limit voltage drop to less than 2 Increase cable gauge if voltage drop is 296 or more En 2 5 SELECTING THE MOUNTING POSITION 6 INSTALLATION WORK Decide the mounting position with the customer as follows 6 1 Installation dimensions 5 1 Indoor unit Wall hook bracket 63 mm or over 100 mm or over 1 Install the indoor unit level on a strong wall which is not subject to vibration 2 The inlet and outlet ports should not be obstructed the air should be able to blow all 70 mm or over over the room Install the unit a dedicated electrical branch circuit Do not install the unit where it will be exposed to direct sunlight Install the unit where connection to the outdoor unit is easy Install the unit where the drain pipe can be easily installed 3 4 5 6 7 Take servicing etc into consideration and leave the spaces shown in 6 1 Installation ee ee Dr yr_ rm rs rm dimensions Also install the
21. ause deterioration and water leakage After removing drain hose be sure not to forget mounting drain cap Be sure to fix the drain hose with tape to the bottom of piping Prevent drain water freezing under low temperature environment When installing indoor unit s drain hose outdoors necessary measure for frost protection should be taken to prevent drain water freezing Under low temperature environment when outdoor temperature under 0 C after cooling operation is executed water in the drain hose could be frozen Once drain Drain cock Screw hole T Drain hose Drain fixture Drain fixture Please hold around the joint of the drain hose during working e As the screw is inside be sure to use screwdriver treated with magnet water is frozen the drain hose will be blocked and water leakage may result at the indoor unit For left piping and left rear piping align the marks on the wall hook bracket and shape the connection pipe Bend the connection piping at a bend radius of 70 mm or more and install no more than 35 mm from the wall After passing the indoor piping and drain hose through the wall hole hang the indoor unit on the hooks at the top and bottom of the wall hook bracket En 4 Installing the indoor unit Hang the indoor unit from the hooks at the top of the wall hook bracket Insert the spacer etc between the indoor unit and t
22. charging port of the 3 way valve side with the projection for pushing in the valve core 4 Open the low pressure side valve of the gauge manifold fully b Operate the vacuum pump and start pump down 6 Slowly loosen the flare nut of the 3 way valve and check if air enters then retighten the flare nut When the flare nut is loosened the operating sound of the vacuum pump changes and the reading of the compound pressure gauge goes from minus to zero 7 Pump down the system for at least 15 minutes then check if the compound pressure gauge reads 0 1 MPa 76 cmHg 1 bar 8 At the end of pump down close the low pressure side gauge of the gauge manifold fully and stop the vacuum pump 9 Slowly loosen the valve stem of the 3 way valve When the compound pressure gauge reading reaches 0 1 0 2 MPa retighten the valve stem and disconnect the charge hose from the 3 way valve charging port If the stem of the 3 way valve is opened fully before the charge hose is disconnect ed it may be difficult to disconnect the charge hose 10 Fully open the valve stems of the 2 way valve and 3 way valve using a hexagon wrench After the valve stem begins to turn turn it with a torque of less than 2 9 N m 30 kgf e cm until it stops turning 11 Firmly tighten the 2 way valve and 3 way valve blank cap and the charging port cap Gauge manifold Compound pressure gauge Pressure gauge 0 1 MPa 3 way valve 2 Way valv
23. e 76 cmHg CT LIE E Flare nut 1 bar x j X ki II High ve Low pressure pressure z di side valve side valve SS closed SS SSS en d SS sc sl Miel Charge CL Bs Blank cap hose gt Charge hose P Charging port el Charging port cap Vacuum pump Tightening torque Blank cap 20 0 to 25 0 N m 200 to 250 kgf cm Charging port cap 12 5 to 16 0 N m 125 to 160 kgf cm 5 5 Test run Perform test operation and check items below For the test operation method refer to the operating manual The outdoor unit may not operate depending on the room temperature In this case keep on pressing the MANUAL AUTO button of the indoor unit for more than 10 seconds The operation indicator lamp and timer indicator lamp will begin to flash simultaneously during cooling test run Then heating test run will begin in about three minutes when HEAT is selected by the remote control operation Please follow the operating manual for remote control operation To end test operation keep on pressing the MANUAL AUTO button of the indoor unit for more than 3 seconds When the air conditioner is run by pressing the test run button the OPERATION indica tor lamp and TIMER indicator lamp of the indoor unit will simultaneously flash slowly OUTDOOR UNIT 1 Is there any abnormal noise and vibration during operation 2 Will noise wind or drain water from the unit disturb the neighbors 3 Is there any gas leakage
24. ed with the optional installation set or pro cured at the site to the wall pipe En 3 2 Connect the outdoor unit and indoor unit pip Check if L is flared uniformly and ing is not cracked or scratched 3 After matching the center of the flare surface and tightening the nut hand tight tighten the nut to the specified tightening torque with a torque wrench Table 1 FLARING 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 the burrs 3 Insert the flare nut onto the pipe and flare the pipe with a flaring tool Insert the 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 for R22 flare tool When using the conventional flare tool always use an allowance adjustment gauge and secure the A dimension shown in table 2 BENDING PIPES 1 When bending the pipe be careful not to crush it 2 To prevent breaking of the pipe avoid sharp bends Bend the pipe with a radius of curvature of 70mm or over 3 If the copper pipe is bend the pipe or pulled to often it will become stiff Do not bend the pipes more than three times at one place Tighten with two wrenches GA Wrench fixed To prevent gas leakage coat the flare surface with refrigerator oil
25. he wall hook bracket and separate the bottom of the indoor unit from the wall Indoor unit Align the marks Bend R70 mm with a pipe bender Connection pipe 9 52 mm dia Indoor unit Wall hook bracket Top hooks Bottom hooks After hooking the indoor unit to the top hook hook the fittings of the indoor unit to the 2 bottom hooks while lowering the unit and pushing it against the wall 6 6 Flare connection Pipe connection N CAUTION Tighten the flare nuts with a torque wrench using the specified tightening method Oth erwise the flare nuts could break after a prolonged period causing refrigerant to leak and generate hazardous gas if the refrigerant comes into contact with a flame 6 6 1 Flaring 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 the flare nut always use the flare nut attached to the indoor unit s and outdoor unit respectively onto the pipe and perform the flare processing with a flare tool Use the special R410A flare tool or the conventional flare tool Leakage of refrigerant may result if other flare nuts are used 4 Protect the pipes by pinching them or with tape to prevent dust dirt or water from entering the pipes Check if L is flared uniformly and is not cracked or scratched Dimensi
26. ing position with the customer as follows Do not set to a place where there is oily smoke oil is used in the factory the unit can contact sea breeze sulfide gases will be generated in the hot spring area corrosive gases will be generated animal may urine on the unit and ammonia will be generated and a dusty place 3 1 Outdoor unit 1 If possible do not install the unit where it will be exposed to direct sunlight If necessary Install a blind that does not interfere with the air flow 2 Do not install the unit where a strong wind blows or where it is very dusty 3 Do not install the unit where people pass 4 Take you neighbors into consideration so that they are not disturbed by air blowing into their windows or by noise 5 Provide the space shown in figure so that the air flow is not blocked Also for efficient operation leave open three of the four directions front rear and both sides 6 Install the unit where keep away more than 3m from the antenna of TV set and Radio 7 Outdoor unit should be set to a place where both drainage and itself will not be affected when heating WARNING Install at a place that can withstand the weight of the outdoor units and install positively so that the units will not topple or fall CAUTION Do not install where there is the danger of combustible gas leakage Do not install near heat sources In places where the outdoor temperature drops to 0 C or lower the drain
27. lected between the following two Function Number or Setting Value For the operation method refer to the operating manual 1 Stop the air conditioner operation 2 Press the master control button and the fan control button simultaneously for 2 seconds or more to start the test run e Settings will not be changed if invalid numbers or setting values are selected e Refer to the installation manual enclosed with the remote control unit when the wired remote control unit option is used Entering the Function Setting Mode While pressing the POWERFUL button and SET TEMP AA simultaneously press the RESET button to enter the function setting mode OC FAN xot MODE Cal Cal ele Qo BE CFE Test run display STEP 1 Selecting the Remote Controller Signal Code 3 Press the start stop button to stop the test run Use the following steps to select the signal code of the remote con troller Note that the air conditioner cannot receive a signal code if the air conditioner has not been set for the signal code 11 REMOTE CONTROLLER INSTALLATION The signal codes that are set through this process are applicable only to the signals in the FUNCTION SETTING For details on how AN CAUTION to set the signal codes through the normal process refer to Remote controller signal code Si Check that the indoor unit correctly receives the signal from the remote controller i E RO then ins
28. ll the air conditioner or a part of the air conditioner by yourself N CAUTION This unit must be installed by qualified personnel with a capacity certificate for handling refrigerant fluids Refer to regulation and laws in use on installation place The installation must be carried out in compliance with regulations in force in the place of installation and the installation instructions of the manufacturer This unit is part of a set constituting an air conditioner It must not be installed alone or with non authorized by the manufacturer En 1 Always use a separate power supply line protected by a circuit breaker operating on all wires with a distance between contact of 3mm for this unit The unit must be correctly grounded and the supply line must be equipped with a dif ferential breaker in order to protect the persons The units are not explosion proof and therefore should not be installed in explosive atmosphere Never touch electrical components immediately after the power supply has been turned off Electric shock may occur After turning off the power always wait 5 minutes before touching electrical components This unit contains no user serviceable parts Always consult authorized service person nel to repairs When moving consult authorized service personnel for disconnection and installation of the unit ERT UNIT 2 1 Precautions for using R410A refrigerant The basic installation work procedures are the same a
29. nit with the air conditioner piping and cables available from your local distributor This installation manual describes the correct con nections using the installation set available from your local distributor Installation work must be performed in accordance with national wiring standards by authorized personnel only Do not turn on the power until all installation work is complete This installation manual describes how to install the indoor unit only To install the outdoor unit refer to the installation manual included with the outdoor unit Becareful not to scratch the air conditioner when handling it After installation explain correct operation to the customer using the operating manual 2 4 Accessories The following installation accessories are supplied Use them as required Name and Shape Name and Shape Remote controller holder Y y Operating Manual Installation Manual This Cloth tape manual Wall hook bracket Tapping screw M4 x 25 mm Remote controller Tapping screw M3 x 12 mm Air cleaning filter Battery The following items are necessary to install this air conditioner The items are not includ ed with the air conditioner and must be purchased separately Name Q ty Name Q ty Connection pipe assembly Wall cap Connection cable 4 conductor Saddle 2 5 Optional parts Refer to each installation manual for the method of i
30. nstalled more than 1 m apart you could still receive noise under some signal conditions Wall hook bracket If children under 10 years old may approach the unit take preventive measures so that they cannot reach the unit Install the indoor unit on the wall where the height from the floors more than 1800 mm Center mark Center mark 65 mm dia hole Fasten with vinyl tape Wall cap Inside 7 Outside Wall 5 to 10 mm low Field supplied WARNING If the wall pipe is not used the cable interconnecting the indoor unit s and outdoor unit may touch metal and cause electric discharge En 3 Installation method of Drain cap Use a hexagonal wrench 4 mm at opposite side to insert the drain cap till the drain cap contacts the tip of drain 6 4 Installing the wall hook bracket 1 Install the wall hook bracket so that it is correctly positioned horizontally and vertically If the wall hook bracket is titled water will drip to the floor cock 2 Install the wall hook bracket so that it is strong enough to support the weight of the unit cock Drain cap Fasten the wall hook bracket to the wall with 5 or more screws through the holes near the outer edge of the bracket Check that there is no rattle at the wall hook bracket Wall hook bracket Hexagonal wrench peu E Ke Ee i ipi ja e NI FE e e M m w Bind with vinyl tape Tapping screw Bottom piping N
31. nstalling optional parts UTY RSN M For air conditioner operation For the installation of optional parts Optional communication kit is necessary for the installation 3 GENERAL This INSTALLATION MANUAL briefly outlines where and how to install the air conditioning system Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning 3 1 Type of copper pipe and insulation material CAUTION Refer to the installation manual for the outdoor unit for description of allowable pipe length and height difference 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 mek or less 20 C 3 2 Additional materials required for installation A Refrigeration armored tape B Insul
32. odels Also when storing the piping securely seal the opening by pinching taping etc When charging the refrigerant take into account the slight change in the composition of the gas and liquid phases And always charge from the liquid phase where refrigerant composition is stable 2 2 Special tools for R410A Pressure is high and cannot be measured with a conven tional R22 gauge To prevent erroneous mixing of other refrigerants the diameter of each port has been changed It is recommended the gauge with seals 0 1 to 5 3 MPa 1 to 53 bar for high pressure 0 1 to 3 8 MPa 1 to 38 bar for low pressure To increase pressure resistance the hose material and base Charge hose size were changed A conventional vacuum pump can be used by installing a Vacuum pump vacuum pump adapter Gas leakage detector Special gas leakage detector for HFC refrigerant R410A Copper pipes Gauge manifold It is necessary to use seamless copper pipes and it is desirable that the amount of residual oil is less than 40 mg 10 m Do not use copper pipes having a collapsed deformed or discolored portion especially on the interior surface Otherwise the expansion value or capillary tube may become blocked with contaminants As an air conditioner using R410A incurs pressure higher than when using R22 it is neces sary to choose adequate materials Thicknesses of copper pipes used with R410A are as shown in Table1 Never use copper
33. on A mm Flare tool for R410A clutch type 0 to 0 5 Dimension B mm 15 88 5 8 19 05 3 4 When using conventional flare tools to flare R410A pipes the dimension A should be ap proximately 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 Width across flats Pipe outside diameter mm in Width across flats of Flare nut mm 6 35 1 4 7 9 52 3 8 2 En 5 6 6 2 Bending pipes e If pipes are shaped by hand be careful not to collapse them Do not bend the pipes in an angle more than 90 When pipes are repeatedly bend or stretched the material will harden making it difficult to bend or stretch them any more Do not bend or stretch the pipes more than 3 times To prevent breaking of the pipe avoid sharp bends If the pipe is bent repeatedly at the same place it will break 6 6 3 Pipe connection Be sure to Install the pipe against the port on the indoor unit correctly If the center ing is improper the flare nut cannot tighten smoothly If the flare nut is forced to turn the threads will be damaged Do not remove the flare nut from the indoor unit pipe until immediately before con necting the connection pipe Hold the torque wrench at its grip keeping it in the right angle with the pipe in order to tighten the flare nut correctly Tighten the flare nuts with a
34. remove the refrigerant piping Do not remove the connection pipe while the compressor is in operation with 2 way or 3 way valve open This may cause abnormal pressure in the refrigeration cycle that leads to breakage and even injury En 4
35. ressure Gauge manifold To increase pressure resistance the hose material and base Charge hose size were changed A conventional vacuum pump can be used by installing a Vacuum pump vacuum pump adapter Gas leakage detector Special gas leakage detector for HFC refrigerant R410A Copper pipes It is necessary to use seamless copper pipes and it is desirable that the amount of residual oil is less than 40 mg 10 m Do not use copper pipes having a collapsed deformed or discolored portion especially on the interior surface Otherwise the expansion value or capillary tube may become blocked with contaminants As an air conditioner using R410A incurs pressure higher than when using R22 it is neces sary to choose adequate materials Do not use the existing for R22 piping and flare nuts If the existing materials are used the pressure inside the refrigerant cycle will rise and cause failure injury etc Use the special R410A materials When installing and relocating the air conditioner do not mix gases other than the specified refrigerant R410A to enter the refrigerant cycle If air or other gas enters the refrigerant cycle the pressure inside the cycle will rise to an abnormally high value and cause failure injury etc 2 3 For authorized service personnel only For the air conditioner to operate satisfactorily install it as outlined in this installation manual Connect the indoor unit and outdoor u
36. ry setting Function Setting Description Value Standard O E NN lower control Warmer control Heating Room Temperature Correction Depending on the installed environment the room temperature sensor may require a cor rection The settings may be changed as shown in the table below Factory setting Function Setting Description Value Standard Lower control Slightly warmer control Warmer control Auto Restart Enable or disable automatic system restart after a power outage e Factory setting Function a Description Value Auto restart is an emergency function such as for power failure etc Do not start and stop the indoor unit by this function in normal operation Be sure to operate by the control unit or external input device Indoor room temperature sensor switching function Only for Wired remote controller The following settings are needed when using the Wired remote controller temperature sensor Factory setting Function OO Description Setting Value If setting value is 00 Room temperature is controlled by the indoor unit temperature sensor If setting value is 01 Room temperature is controlled by either indoor unit temperature sensor or remote con troller unit sensor En 9 Remote controller signal code Change the indoor unit Signal Code depending on the remote controllers Factory setting Function Setting Description Se
37. s conventional refrigerant R22 models However pay careful attention to the following points Since the working pressure is 1 6 times higher than that of conventional refrigerant R22 models some of the piping and installation and service tools are special See the table below Especially when replacing a conventional refrigerant R22 model with a new refrigerant R410A model always replace the conventional piping and flare nuts with the R410A piping and flare nuts Models that use refrigerant R410A have a different charging port thread diameter to pre vent erroneous charging with conventional refrigerant R22 and for safety Therefore check beforehand The charging port thread diameter for R410A is 1 2 inch Be more careful that foreign matter oil water etc does not enter the piping than with refrigerant R22 models Also when storing the piping securely seal the opening by pinching taping etc When charging the refrigerant take into account the slight change in the composition of the gas and liquid phases And always charge from the liquid phase where refrigerant composition is stable 2 2 Special tools for R410A Pressure is high and cannot be measured with a conven tional R22 gauge To prevent erroneous mixing of other refrigerants the diameter of each port has been changed It is recommended the gauge with seals 0 1 to 5 3 MPa 1 to 53 bar for high pressure 0 1 to 3 8 MPa 1 to 38 bar for low p
38. tall the remote controller holder 1 Press SET TEMP A V button to change the signal Select the remote controller holder selection site by paying careful attention to the fol code between Haber eet Match the code on the lowing display to the air conditioner signal code initially set to Avoid places in direct sunlight L5 If the signal code does not need to be selected press Select a place that will not be affected by the heat from a stove etc the 10 C HEAT button and proceed to STEP 2 2 Press the MODE button and check that the indoor unit can 11 1 Remote controller holder installation receive signals at the displayed signal code 3 Press the 10 C HEAT button to accept the signal code e Install the remote controller a maximum distance of 7 m from the remote control re and proceed to STEP 2 ceiver However when installing the remote controller check that it operates correctly e Install the remote controller holder to a wall pillar etc with the tapping screw remote controller remote controller The air conditioner signal code is set to A prior to shipment Contact your retailer to holder fixing mounting change the signal code Yl Remote 1 Set __ controller holder e Tapping screw small Remote Pa controller The remote controller resets to signal code A when the batteries in the remote control ler are replaced
39. th snow it might become difficult to get warm and it is likely to cause of the breakdown Please construct a canopy and a pedestal or place the unit on a high stand local configured 5 INSTALLATION di 1 Outdoor unit installation e Set the unit on a strong stand such as thing made of concrete blocks to minimize shock and vibration e Do not set the unit directly on the ground because it will cause trouble Switch cover A B removal 1 Remove the three tapping screws 2 Push downward the Switch cover B 8 Push upward the Switch cover A Installing the Switch cover A B 1 After inserting the three hooks of Switch cover A then push upward and then tighten the two tap ping screws 2 After inserting the three hooks of Switch cover B then push upward and then tighten the one tap ping screw Install the unit where it will not be tilted by more than 5 When installing the outdoor unit where it may exposed to strong wind fasten it securely En 2 5 2 Outdoor unit wiring Remove the outdoor unit Switch cover A B 1 2 Remove the outdoor unit Cord clamp and Nylon clamp 3 Bend the end of the cord as shown in the fig
40. the crimp type terminals to the wires using an appropriate tool so that the wires do not come loose 7 1 Wiring system diagram Every wire must be connected firmly Crimp type terminal No wire should be allowed to touch refrigerant tubing the compressor or any moving Strip 10 mm part Loose wiring may cause the terminal to overheat or result in unit malfunction A fire hazard may also exist Therefore be sure all wiring is tightly connected E Connect wires to the matching numbers of terminals FU Type 60245 IEC57 3 Use the specified wires connect them securely and fasten them so that there is no INDOOR UNIT STE stress placed on the terminals MOT unt OUTDOOR UNIT 4 Use an appropriate screwdriver to tighten the terminal screws Do not use a screw TERMINAL Power line driver 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 Screw with special washer i Screw with special washer Control line Please connect it to TE the specified terminal Wire mur s Grounding line Crimp type VS a a i LS terminal GC Terminal blocks Wire 7 2 Indoor unit wiring 6 See the table below for the terminal screw tightening torques 1 Remove the cable clamp Tightening torque N m kgf cm 2 Bend the end of the connection cable as shown in the figure
41. tting Value E pM EC External input control Operation Stop mode or Forced stop mode can be elected Factory setting 3 Function Setting Description Setting Value Operation Stop mode om Setting forbidden Forced stop mode Setting record Record any changes to the settings in the following table Indoor room temperature sensor switching function Remote controller signal code External input control After completing the FUNCTION SETTING be sure to turn off the power and turn it on again 14 CUSTOMER GUIDANCE Explain the following to the customer in accordance with the operating manual 1 Starting and stopping method operation switching temperature adjustment timer air flow switching and other remote control unit operations 2 Air filter removal and cleaning and how to use the air louvers 3 Give the operating manual to the customer 15 ERROR CODES If you use a wireless remote controller the lamp on the photo detector unit will output error codes by way of blinking patterns If you use a wired remote controller error codes will ap pear on the remote control display See the lamp blinking patterns and error codes in the table An error display is displayed only during operation Error display Wired remote Description controller Error code OPERATION TIMER ECONOMY lamp lamp lamp Wired remote controller communication error green orange green Check
42. unit where the filter can be removed 1 5 m or over 1 8m or over Wallcap Correct initial installation location is important because it is difficult to move unit after it is EES Remote Remote controller holder controller 8 R I AN WARNING Tapping screw small Select installation locations that can properly support the weight of the indoor Install the units securely so that they do not topple or fall Do not install the unit in the following areas Area with high salt content such as at the seaside It will deteriorate metal parts causing the parts to fail or the unit to leak water The piping can be connected in the 6 directions indicated in the following Area filled with mineral oil or containing a large amount of splashed oil or steam such as a When the piping is connected in direction or cut along the piping groove in kitchen It will deteriorate plastic parts causing the parts to fail or the unit to leak water 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 6 2 Indoor unit piping direction the side of the front cover with a hacksaw Area that can cause combustible gas to leak contains suspended carbon fibers or flammable Left dust or volatile inflammables such as paint thinner or gasoline Right o
43. ure 4 Connect the end of the connection cord fully into the terminal block 5 Fasten the sheath with a cord clamp 6 Fasten the sheath with a nylon clamp 7 Install the Switch cover A B Gg B Cord clamp RU A Nylon clamp Indoor unit terminal block Outdoor unit terminal block 1 203 1203 L N arth screw IAC Ale ele ele Earth screw Connection cord y 1 i La KE Z a Power supply Cord TIT amp 3 1 203 L N E Earth AHAHA T screw z 3 Lo S N N d Cord clamp Connection Cord Power supply Cord Connection cord wiring Run the connection cord to the rear of the outdoor unit within the range of the arrows shown in the figure The Switch cover B becomes difficult to install Connection and Power supply cord TRE Nylon clamp Screw HOLE A HOLE Match the terminal block numbers and connection cord colors with those of the indoor unit Erroneous wiring may cause burning of the electric parts Connect the connection cords firmly to the terminal block Imperfect installation may cause a fire Always fasten the outside covering of the connection cord with the cord clamp If the insulator is chafed electric leakage may occur Securely earth the power cord Do not use the earth screw for an external connector Only use for interconnection between two units 5 3 Connecting the piping CONNECTION 1 Install the outdoor unit wall cap suppli
44. utlet If gas leaks and settles around the unit it can cause a fire outlet Rear outlet Left rear Area where animals may urinate on the unit or ammonia may be generated outlet Bottom outlet Left bottom outlet Do not use the unit for special purposes such as storing food raising animals growing plants or preserving precision devices or art objects It can degrade the quality of the preserved or stored objects 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 1 Cut a 65 mm diameter hole in the wall at the position shown in the following 2 Cuttheholesothatthe outside end is lower 5 to 10 mm than the inside end Install the unit where drainage does not cause any trouble 83 Always align the center of the wall hole If misaligned water leakage will occur 4 Install the indoor unit outdoor unit power supply cable transmission cable and remote Cut the wall pipe to match the wall thickness stick it into the wall cap fasten the cap with vinyl tape and stick the pipe through the hole For left piping and right piping cut the hole a little lower so that drain water will flow freely 6 3 Cutting the hole in the wall for the connecting piping control cable at least 1 m away from a television or radio receivers The purpose of this i is to prevent TV reception interference or radio noise 5 Even if they are i
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