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INSTALLATION MANUAL

1. Indoor unit Fig B Outdoor unit 1 Master H4 i D Fig C Outdoor unit 1 Master Outdoor unit 2 Slave 1 Master Ly 4 U i 1 1 1 1 1 U i 1 1 1 1 1 1 U 1 1 1 1 1 1 1 l 1 l 1 i d 1 Indoor Indoor f 1 unit unit 1 1 ndoor 1 Hai unit y oy t Outdoor unit 2 Slave Ly 4 1 1 1 l 1 U 1 3 1 o 1 U 1 1 E l 1 d AR 4 1 id i 1 1 1 ii 1 1 I 1 1 I 1 1 l 1 1 1H21 y I 1 l i D 1 Indoor r H3 unt y v Outdoor unit 3 Slave 2 4 H4 H U i 1 a ta tk i U i E E are oe ae ee ee ee eee E i a 1 l 1 1 d HI L 1 I 1 tyi IT 1 U q I l 1 1 l 1 1 I 1 1 1 1 i 1 H2 i Indoor Indoor 1 1 t unit unit 1 koi Fino e ndoor H unit y oy D Indoor unit 4 2 Pipe selection Master Slave Slave unit unit1 unit2 This unit is designed specifically for use with the R410A refrigerant Pipes for R407C or R22 may not be used with this unit F Pipe size table B Pipe size First separation tube optional Outdoor unit Separation tube table C branch H kit optional optional Do not use existing pipes Improper
2. When H3 is 1500 mm or less L32500 mm When H3 is 1500 mm or more L32500 h3 2 mm When H4 is 500 mm or less L42200 mm When H4 is 500 mm or more L42200 h4 2 mm When H5 is 500 mm or less L52200 mm When H5 is 500 mm or more L52200 h5 2 mm En 7 Fig 4 lt Front gt lt Side view gt Fig 5 lt Front view gt lt Rear gt ES Ti lt y Il Ul ud rl ri ri Weel EW END oft Elo oft 2 2 a 2 Loi m Wl wall Wall Wall Wall Fig 6 lt Top view gt Fig 7 lt Top view gt W I H Tu A A 800mm 500mm or more or more Y A A 800mm 1000mm or more or more Y A L3 ry F L3 L p i 1 Le Lol L 20mmor 20mm or L5 ee len gt more more L5 20mm or 20mm or LS more more 3 3 2 When install near by unlimited height wall 1 Single and multiple installations e There are no restrictions on the height of the wall e The wall without height restrictions must not exist on the both sides left right of outdoor unit Also must not exist on the both sides front rear of outdoor unit e Provide installation spaces other than L6 in accordance with the conditions shown in the figure below e Ventilation resistance ca
3. 50 Hz l H aba e N poe Breaker m m Iga m Outdoor unit KO Power supply cable jas S ch 7 Remote controller cable 2 Selecting main breaker and main power supply cable when connecting multiple outdoor units Main breaker Main breaker Total Sub breaker Refer to the table in item 1 for the sub breaker capacity Fig In case of connected three outdoor unit breaker earth leakage breaker Transmission cable OK 230 V 10 50 Hz mn Indoor unit me eg TL y Power supply cable Sub Nal breaker y H y Breaker Main breaker E F 4 N kp ae aa e 400 V30 y D Hei Sa 50 Hz Outdoor unit Power supply cable Remote controller cable 3 Example of bad breaker wiring Transmission cable 230 V 1 50 Hz Indoor unit No Good E el of D Power supply cable 7 7 7 Breaker 400 V 30 50 Hz H L l l y He He a ab ad d Net o i ap ke Gi Breaker Outdoor unit a bw No Good install a breaker Power supply cable Remote controller cable for each outdoor uni
4. Capacity priority 0 4 temporarily if the cooling heating capacity is insufficient during low noise operation 40 setting during low Once insufficient capacity is canceled the unit will resume low noise noise operation operation mode Set only the master unit for this item A Normal operation 4 1 0 0 O When low noise operation ON is selected the operating noise will be Low noise S 7 41 operation setting Low noise operation 4 1 0 1 suppressed Set only the master unit for this item Low noise Level 1 55dB 4 2 0 0 O __ This item allows you to configure the noise level when the unit operates 42 operation level Level 2 50dB 4 2 0 1 under low noise operation mode setting Set only the master unit for this item 70 Setting disabled ri 0 0 0 O Factory default 90 Setting disabled 9 0 0 0 O Factory default 1 Turn on the power of the outdoor unit and enter standby mode e When system is normal POWER MODE lamp lights up ERROR lamp is off POWER MODE lamp ON ERROR lamp OFF a 7 segment LED display OFF MODE EXIT button SELECT button ENTER button e When system is abnormal Check the settings as there is an error in the settings for outdoor unit address DIP switch SET3 1 2 or number of connected slave units DIP switch SET3 3 4 POWER MODE lamp ERROR lamp ON lt Blinking LED105_ LED104 7 segment LED dis
5. E E o y Terminal resistor off 1 S off T T a A A H A A 1 B HER e ee cee SC ig Refrigerant system2 d Signal amplifer l 1 ea e et Install oO o EE Jo oj Do not install i h my tmy tmy tmi eH EH E La A G Master unit Refrigerant system3 NS2 Network segment 2 NS3 Network segment 3 NS4 Network segment 4 Terminal resister on En 25 7 3 Rotary switch setting The rotary switch REF AD sets the refrigerant circuit address of the outdoor unit Configure the settings only on the master unit of a refrigerant system If multiple refrigerant systems are connected set the rotary switch REF AD as shown in the table below 907 Refrigerant Setting Y circuit example r kd EEN address 63 REF AD x 10 REF AD 1 Rotary Switch REF AD x1 Factory setting 0 Rotary Switch REF ADx10 Factory setting 0 7 4 Push switch setting Various functions can be set Set when necessary Perform settings after all indoor units have stopped operation Refer to Table A for the items that can be set Table A List of Settings Standard pipe 40 65m 0 0 O his item allows you to adjust the cooling cycle loss due to the length of the Pee Short pipe less
6. For manual setting of address refer to the signal amplifier installation manual 7 5 2 Automatic address setting for signal amplifiers When setting the address of the signal amplifier please use the factory setting See the installation manual of the signal amplifier When the system is normal nothing will be displayed on the 7 segment LED display When ERROR is displayed inspect the units Use the MODE EXIT SELECT and ENTER buttons on the outdoor unit print circuit board to configure settings according to the procedures below ee 1 FUNCTION Setting First 2 digits Last 2 digits l EE EE Automatic address setting y Press the ENTER button h i the display when the main i T for signal amplifiers l power is turned on f Press the MODEIEXIT button G al ER I EI gl Press the SELECT button until 10 is displayed Blinking l Jgl l i l y Press the SELECT button I 1 l inki l E d l l Gelee Press the ENTER button for more than 3 seconds f l M I T l I I Blinking l D Press the SELECT button i r H n i ET When F4 to F9 are displayed i Blinking I continue to press the SELECT I M geil jl H H l l Blinking button until F3 is displayed I B Setting is complete when the l S 1 number of units is displayed 1 Press the ENTER button i i if if I
7. H3 15m Difference in height between outdoor unit and outdoor units H4 H4 0 5m From outdoor unit to outdoor unit branch kit a 3m b 3m Total pipe length atbtetf ht j l n p qtstu 1000m Total refrigerant amount 63kg Outdoor unit capacity Master Z slave C In the case of three outdoor units connected From outdoor unit to the farthest indoor unit ate f 150m ate p 150m actual pipe length From the first separation tube to the farthest indoor unit f 60m p 60m actual pipe length Difference in height between outdoor units and indoor units H1 50m For the indoor unit stated below 40m For the outdoor unit stated below Difference in height between indoor units and indoor units H2 H3 H2 15m H3 15m Difference in height between outdoor unit and outdoor units H4 H4 0 5m From outdoor unit to outdoor unit branch kit aZ3m b 3m c 3m Between the farthest outdoor unit to the first outdoor unit branch kit b d 12m ctd 12m Total pipe length atb c dtetf tht j l nt p qtstu 1000m Total refrigerant amount 94 5kg Outdoor unit capacity Master2 slave 12slave 2 NOTE If the outdoor temperature during cooling operation is expected to be 5 C or less do not install the outdoor unit lower than the indoor unit Please refer to 8 3 2 Checking total amount of refrigerant and calculating the amount of refrigerant charge to be added for the total amount of refrigerant Fig A Outdoor unit
8. e Seal the pipe route hole with putty field supply such that there are no gaps Small insects or animals that are trapped in the outdoor unit may cause a short circuit in the electrical component box e To prevent pipe damage do not make sharp bends in the pipe Bend the pipe at a radius of 70mm or greater e Do not bent pipe many times at same part to prevent break Do not use flare connection on the indoor unit pipe until the connection piping has been connected e Wait until the 3 way valve is completely cooled down before removing the pinch pipe or brazing the joint pipe Otherwise the 3 way valve may be damaged e Blaze the joint pipe onto the 3 way valves at the liquid and gas side Process the joint pipe appropriately so that it can be connected easily with the main pipe e Blaze the joint pipe at the liquid and gas side with the main pipe Be sure to supply nitrogen when blazing Fig A Fig B joint pipe accessory joint pipe joint pipe Field supply kriockaut accessory hole joint pipe Field supply Gas pipe Field supply knockout Liquid pipe hole Field supply Kc indoor unit 5 4 Multiple connections e When connecting multiple maximum three units be sure to install the unit with the largest capacity nearest to the indoor unit For example AH ZG AL H Outdoor Unit1 AJO126LALH Outdoor Unit2 AJOA90LALH Outdoor Unit3 e When c
9. 13 stop view gt lt Top view gt 400mm a 400mm or more y or more i 500mm 800mm or more 4 or more Y l t 800mm 1000mm or more or more Y 1000mm 400mm 400mm 1000mm 400mm or more or more or more or more or more 3 3 3 When there are obstacles above the product When there are obstacles above the product keep the minimum installation height d as shown in the figure and install the outlet duct When installing the outlet duct you must set the high static pressure mode with the Outlet duct push button switch 500mm oo k g g or more Similar when installing anti snow hood Setting high static pressure mode km l l l Follow the instructions in the table below to set the high static pressure mode L l l l Condition High static pressure mode setting d When L 150mm and other resistance is not at the air flow outlet 30Pa or less Set to Mode 1 When L gt 150mm or other resistance is at the air flow outlet 80Pa or less Set to Mode 2 1 Refer to the section on Push Switch Setting in Chapter 7 Field Setting 3 4 Transportation the outdoor unit Hoisting method Fig A e When hanging the outdoor unit and conveying it to installation location hang the unit with rope by passing through the 4 opening holes on bottom of front and rear side as shown in figure e Use 2 ropes at least 8m long If used shorter length
10. 13 kg 4 Calculation of factory charged amount D 11 8 kg 11 8 kg 11 8 kg 35 4 kg 5 Check the total amount of refrigerant When three outdoor units are connected to one system the following condition must be satisfied Condition E C D 94 5 kg Calculation 27 13 kg 35 4 kg 62 53 kg lt 94 5 kg No problem if the above condition is satisfied 8 4 Installing insulation e Install insulation material after conducting the 8 1 Sealing Test e To prevent condensation and water droplets install insulation material on the refrigerant pipe e Refer to the table to determine the thickness of the insulation material e If the outdoor unit is installed at a level that is higher than the indoor unit the water that has condensed in the 3 way valve of the outdoor unit could travel to the indoor unit Therefore use putty in the space between the pipe and the Putty insulation to prevent the entry of water Insulation Table Selection of insulation for using an insulation material with equal heat transmission rate or below 0 040W m k Pipe diameter mm When an ambient temperature and relative humidity exceed 32 C please strengthen heat insulation of refrigerant pipe En 35 9 TEST RUN 9 1 Pre test run check items Before the test operation refer to the figure and check the following items Is there a gas leakage At pipe connections flange conn
11. D D This will be displayed m t This will be displayed 1 i after 5 seconds LX U after 5 seconds 1 l 1 Blinking Blinking 1 Press the SELECT button Press the SELECT button SESS SSS SSS SSS hci ose E SRE See Sees Stop test run settings I T Die ole t Blinking Press the ENTER button for Blinking Press the ENTER button for 1 DH more than 3 seconds D more than 3 seconds 1 i This will be displayed This will be displayed i when the cooling when the heating l d D q E operation mode is d Dun E operation mode is i i canceled canceled i I 1 I uf i 1 This will be displayed This will be displayed i HH d after 5 seconds HH d after 5 seconds I Blinking Blinking 1 I 1 I y 1 I 1 I 1 d EXIT After the test operation is complete turn off the power Attach the cover of the electrical component box and the front panel of the outdoor unit Note e Check that the indoor and outdoor units connected to the same refrigerant system are operating normally e When indoor or outdoor units are not operating or when the indoor and outdoor units of other refrigerant systems are operating the indoor outdoor unit address or DIP switch for the number of connected slave units are not configured correctly The system will not operate normally with an incorrect DIP switch setting Stop the system immediately and recheck the DIP switch setting En 37 9 3 Checklist High and low pressure values are normal Check it with
12. EN CO m KE N 2 E x 3 g a 2 lt Distance from termination resistor m 0 100 200 300 400 En 31 8 PIPE INSTALLATION II Fig A Connection system A In case of connected one outdoor unit B In case of connected many outdoor units L 1 Pressure regulating valve A i Outdoor unit Outdoor unit Outdoor unit Pressure regulating Pressure gauge Pressure valve S p D Nitrogen ms EE LJ L R410A ne 8 L_ pm Indoor Indoor Vaccum O Indoor Indoor uni unit pump Scale unit unit Vaccum Szal pump cale Fig B Table A Charging cap Spindle iqui 9 0 to 12 0 Nm 20 0 to 24 0 Nm 12 5 to 16 0 Nm 90 to 120 kgfcm 200 to 240 kgf cm 125 to 160 kgf cm 27 0 to 33 0 Nem 25 0 to 30 0 Nm 12 5 to 16 0 Nm 270 to 330 kgfcm 250 to 300 kgfcm 125 to 160 kat om e Do not apply shock during sealing test It can rupture the pipes and cause serious injury e Do not turn on the power unless all operations are complete e Do not block the walls and the ceiling until the sealing test and the charging of the refrigerant gas have been completed After connecting the pipes perform an sealing test
13. Recheck that the spindle of the 3 way valve are closed before performing a sealing test Fig B Pour nitrogen gas through both the liquid pipe and the gas pipe Pressurize nitrogen gas to 4 12 MPa to perform the sealing test Check all flare connection areas and welded areas Then check that the pressure has not decreased Compare the pressures after pressurizing and letting it stand for 24 hours and check that the pressure has not decreased When the outdoor temperature changes 5 C the test pressure changes 0 05 MPa If the pressure has dropped the pipe joints may be leaking If a leakage is found immediately repair it and perform a sealing test again Decrease the pressure of nitrogen gas before blazing After completing the sealing test release the nitrogen gas from both valves Release the nitrogen gas slowly En 32 8 2 Vaccum process e Do not turn on the power unless all operations are complete e Ifthe system is not evacuated sufficiently its performance will drop Evacuation procedure 1 Remove the caps of the gas pipe and liquid pipe and check that the valves are closed 2 Remove the charging cap 3 Connect a vacuum pump and a pressure gauge to a charging hose and connect it to the charging port 4 Activate the vacuum pump and vacuum the indoor unit and connection piping until the pressure gauge becomes 76cmHg Evacuate from both the gas pipe and the liquid pipe 5 Continue evacuating the system
14. i y Press the MODE EXIT button End 7 6 Indoor unit address setting 7 6 1 Indoor unit address setting Address must be set for the indoor unit Manual setting gt When setting with the switch inside the indoor unit refer to the indoor unit operating manual When setting with a remote control refer to the remote control operating manual Automatic setting gt eCheck that the wiring is as shown in the figure below Operate using the outdoor master unit of each refrigerant system En 29 Fig Wiring example for automatic address setting 1 Signal amplifier wiring example 2 3 4 Indoor unit wiring example Connect the indoor and outdoor units of the same refrigerant system as shown below 1Refrigerant system1 I e Master unit 1 Refrigerant system2 E 1 gon Master unit 1Refrigerant system3 1 U I K Master unit NOTE The automatic address function can be used for a maximum of 48 indoor units installed to the same refrigerant system When network is connected to other refrigerant systems the automatic address function cannot be used The addresses of indoor units that have been configured automatically cannot be assigned in the order when they are installed Refer to the indoor unit installation manual for the procedures to check the addresses 7 6 2 Proc
15. line Refrigerant system 1 Refrigerant il il il system 1 Ges H Transmission line ee SA ee ee E P Transmission line SE Refrigerant Ff tf Sa Kg ga b system 2 i e ee ee re D EU ss e D RB ze e e e e e re re e rz Transmission line ee LL fei os rere eet E Stel aed Lye ES Transmission line E li noe ta system i ee 6 5 Wiring method To other refrigerant cricuit Outdoor unit Hi breaker earth leakage breaker wer supply Power supply Power supply d 1 400V 30 50Hz 400V 30 50Hz 400V 30 50Hz i LI Li fiz fis n Ji HHUA Outdoor unit 1 D Outdoor unit2 SNA Outdoor unit3 le Master unit Breaker Slave unit 1 Breaker Slave unit 2 Breaker AAN Z BAKEN lol O ui fiz ca n IO ui fiz ts n li ransmission Transmission Transmission X1 X2 DIR ES DIESEM D xof z1 Z2 H1 ej I t SEI om SSS SS SS EES Indoor unit Indoor unit A E IHK UI Transmission Power supply Remote control LIN IDI yyy Transmission ower supply Remo
16. pipe selection will degrade performance Pipe size table D Pipe size table E Indoor unit 7 unit unit L unit unit Table A Wall thickness and pipe material for each diameter 6 35 9 52 12 70 15 88 19 05 22 22 28 58 34 92 0 8 0 8 0 8 1 0 1 2 1 0 1 0 1 2 JIS H3300 C1220T O or equivalent COPPER Please select the pipe size in accordance with local rules Table B Between outdoor unit to outdoor unit branch kit Table C Between outdoor unit branch kits or outdoor unit branch kit to first separation tube 22 4 to 28 0 28 1 to 45 0 45 1 to 56 0 56 1 to 80 0 80 1 to 96 0 96 1 or more Table D Between separation tubes 4 4 to 11 1 11 2 to 13 9 UTR BPO90X 14 0 to 28 0 UTR HO906L UTR HO908L 28 1 to 44 7 44 8 to 56 0 UTR BP180X UTR H1806L UTR H1808L 56 1 to 80 0 80 1 to 95 0 UTR BP567X 95 1 or more Table E Between separation tube to indoor unit 2 2 2 8 3 6 4 0 4 5 5 6 7 1 8 0 9 0 11 2 12 5 14 0 18 0 En 12 22 4 25 0 COPPER JIS H 3300 C1220T H or equivalent 1 Allowable tensile stress 33 N mm2 2 Allowable tensile stress 61 N mm2 3 Design pressure 4 15MPa 4 For the installation method refer to
17. prevent cutting of the wiring after the knockout hole was opened remove the burrs along the edge e In addition to prevent rusting painting the edge with rust preventive paint is recommended The piping can be connected from two directions the front or the bottom Knockout holes are provided so that the piping can be connected from two different directions Use the front knockout hole as required Fig A Knockout position Fig B Detail of knockout Fig C Detail of knockout position g position bottom front Unit mm Unit mm N Q90 r ei aN a e Knockout apan Knockout hole ol o S J CD oD 125 B 53 179 73 L 5 3 2 Removing the pinch pipe Remove the pinch pipe only when the internal gas is completely drained If gas still remains inside the piping may crack if you melt the brazing filler metal of the junction area with a burner Before connecting the piping remove the pinch pipe in accordance with the following instructions 1 Verify that the liquid side and gas side 3 way valves are closed Fig A 2 Cut the end of the liquid side and gas side pinch pipe and vent the gas inside the pinch pipe Fig B 3 After all the gas is vented melt the brazing filter metal on connecting part using a burner and remove the pinch pipe Fig C Fig A Fig B Fig C 3 way valve end of pinch pipe En 14 5 3 3 Pipe connection
18. system due to deterioration of refrigerant oil For brazing material use phosphor copper that does not require flux 5 2 Indoor unit pipe connections Separation tube Horizontal Vertical A 4 15 C Ss Horizontal line OK NO GOOD A Outdoor unit or Refrigerant branch kit B Indoor unit or Refrigerant branch kit Header Gas pipe Horizontal line D Outdoor fis f Horizontal S SE CEH ine unit side H VIEW C Horizontal e Horizontal line S VIEW D Liquid pipe Outdoor unit side H 0 mm 10 mm a 0 1 Ba 10 10 He 0 mm 10 mm 2 0 1 Bz 10 10 Miian NO GOOD NO GOOD Main pipe 0 5m or mog Separation tube p TO indoor ee 5m or more Separation tube To indoor unit To indoor unit or or Header Header IITTI To indoor unit 0 5m or more Ve T 7 EH ER ITT To indoor unit Main pipe 0 5m or more To indoor unit e Do not connect a separation tube after a header e Leave the distance 0 5 m or more for straight part to branch tube and header e For details refer to the Installation Instruction Sheet of each part En 13 5 3 Piping method 5 3 1 Opening the knockout hole e Be careful to prevent panel deformed or damaged while opening the knockout hole e To
19. than 40m Oi Aaaa pipe E p ipe lengt S et according to the length of the connected pipe H Bees j Long pipe 1 65 90m H 9 g 2 Set only the Geer SC this item e Long pipe 2 90 120m 0 3 The pipe length is the nearest distance from the outdoor unit to the indoor Long pipe 3 120 151m 0 4 unit on the pipe line No shift 0 D O This item allows you to delay the start timing of the outdoor units for every Compressor Shift 1 21 seconds 1 0 DI refrigerant system when multiple refrigerant systems have been configured 10 sequential start Shift 2 42 seconds 0 2 You can also limit the start current when multiple refrigerant systems are shift Shift 3 63 seconds 0j 3 activated at the same time Set only the master unit for this item Standard 0 0 O 11 Bee capacity Se Ze 1 1 Set this item when necessary High power mode 2 0 3 Standard 0 0 O 12 Heating capacity eae energy mode 1 2 g i Set this item when necessary shift High power mode 1 0 2 High power mode 2 0 3 13 Setting disabled 1 3 0 0 Factory default Forced stop 0 0 O his item allows you to stop the outdoor indoor units of the same refrigerant 2 10 A Dee Emergency stop Emergency stop 0 1 system when a stop signal is received at the external input terminal CN134 20 Forced stop e Forced stop Operation can be resumed using a remote control Emergency stop Once emergency stop is cancelled you can start toggle t operation with a remote control Set only the m
20. the MODE EXIT SELECT and ENTER buttons on the indoor unit print circuit board to configure settings according to the procedures below En 36 1 FUNCTION Setting T First 2 digits Last 2 digits i the display when the main power is turned on 1 Press the MODE EXIT button Fla i l l 1 I l l 1 I l 1 Blinking 1 l l 1 I l l 1 I M Press the SELECT button l I Fie 1 Blinking Y Press the SELECT button 1 F a When F4 to F9 are displayed continue to press the SELECT button until F3 is displayed Settings for starting test operation 1 1 I l l 1 1 LI i Blinking l For cooling operation For heating operation 1 I press the SELECT button press the SELECT button 1 until 00 is displayed until 01 is displayed 1 I 1 1 l H l m a m 4 l i LS LS op a 7 a I Satz Ger I 1 Blinking Press the ENTER button for Blinking Press the ENTER button for i Y more than 3 seconds Y more than 3 seconds 1 I l This will be displayed This will be displayed d ar E when the cooling d DI E when the heating 1 i test operation is test operation is 1 l complete complete l i H Y I z
21. 0 1 to 5 3 MPa and a low pressure display range 0 1 to 3 8 MPa Gauge manifold Charging hose To increase pressure resistance the hose material and base size were changed Vacuum pump Aconventional vacuum pump can be used by installing a vacuum pump adapter Gas leakage detector Special gas leakage detector for HFC refrigerant R410A 2 3 Accessories Use connecting parts as required Do not throw away the connecting parts until the installation has been complete Specifications manual Joint pipe B For connecting gas pipe L type Installation This book For binding power cable manual 1 Deg and transmission cable Joint pipe A For connecting gas pipe 1 Straight type C_ 2 4 Combinations A maximum of three outdoor units can be connected to one refrigerant system The combination of outdoor units per refrigerant system and the number of indoor units that can be connected are as follows En 4 AJOIA72LALH AJDIA90LALH AJO108LALH AJO126LALH AJO144LALH Installation space combination When connecting outdoor units install the outdoor unit with the largest nominal system capacity nearest to the refrigerant pipe and indoor unit followed by those with lesser nominal system capacities Outdoor unit 12 Outdoor unit 2 Outdoor unit 3 Energy saving combinat
22. 5 4 Multiple connections If the pipe diameter between separation tubes based on Table D is larger than the pipe diameter between outdoor unit branch kit and the first separation tube based on Table C select the pipe whose diameter is equal to the one between the outdoor unit branch kit and the first separation tube If pipe diameter D gt C select pipe size from table C Use a standard separation tube for pipe branching Do not use a T tube as it does not separate the refrigerant evenly 5 For the installation method refer to the installation manuals for indoor unit piping connection separation tubes and header 5 PIPE INSTALLATION 5 1 Brazing Pressure regulating valve If air or another type of refrigerant enters the refrigeration cycle the internal pressure in the refrigeration cycle will become abnormally Cap high and prevent the unit from exerting its full performance Apply nitrogen gas while brazing the pipes Nitrogen gas pressure 0 02 MPa pressure felt sufficiently on the back of your hand Nitrogen gas Brazing area If a pipe is brazed without applying nitrogen gas it will create an oxidation film This can degrade performance or damage the parts in the unit such as the compressor or valves Do not use flux to braze pipes If the flux is the chlorine type it will cause the pipes to corrode In addition if the flux contains fluoride it will affect the refrigerant piping
23. Caution when using R410A refrigerant Pay careful attention to the following points e Since the working pressure is 1 6 times higher than that of R22 models some of the piping and installation and service tools are special See the table in the SPECIAL TOOLS FOR R410A section Especially when replacing a conventional refrigerant other than R410A 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 prevent erroneous charging with R22 R407C and for safety Therefore check beforehand The charging port thread diameter for R410A is 1 2 UNF 20 threads per inch Be more careful than the installation of the refrigerant other than R410A models not to enter foreign matters oil water etc and other refrigerant into the piping Also when storing the piping securely seal the openings 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 side whose composition is stable 2 2 Special tools for R410A Pressure is huge and cannot be measured with a conventional gauge To prevent erroneous mixing of other refrigerants the diameter of each port has been changed It is recommended to use a gauge manifold with a high pressure display range
24. E Te T e A To indoor unit 2 When the length between branch kits and the length of the branch kit and outdoor units is more than 2m provide a rise of 200mm or more on the gas pipe However there is no need to provide a rise on the pipe connecting to the master unit even if the length exceeds 2m a Incase of less than 2m b In case of 2m or more Master Slave Slave Master Slave Slave unit unit 1 unit 2 unit unit1 unit2 Outdoor unit Rise To indoor unit branch kit 200 mm or more To indoor uni an SCH N __tessthan 2m Gas ape e Outdoor unit branch kit pipe 2 mor less Gas pipe 2 m or more En 17 6 ELECTRICAL WIRING 6 1 The precautions of electrical wiring Z WARNING Wiring connections must be performed by a qualified person in accordance with specifications The rated supply of this product is 50Hz 400V of 3 phase 4 wire Use a voltage within the range of 342 456V Before connecting the wires make sure the power supply is OFF Select a breaker earth leakage breaker of appropriate capacity and install one at every power supply of an outdoor unit Wrong selection of breakers earth leakage breakers or transition wiring will lead to electric shock and fire Do not connect AC
25. Ge er SS is AB BC BD gt 500m Fig 1 Indoor unit Touch When the total number of units is over 64 REESEN Vk Se Transmission line length between each unit 400m Signal Amplifier is required 2 Length of transmission cable between one network Fig 2 segment NS EF EG GH HJ HK lt 500m Fig 2 KL S 500m Fig 2 3 Length of transmission cable between outdoor units in a refrigerant system Outdoor unit NS 1 Indoor unit die MN S 18m E Terminal resistor NP lt 18m M N i d af pi NOTE Unit means indoor unit outdoor unit Touch Panel cl A al Touch Controller and System Controller Signal Amplifier G Transmission line Panel single split adaptor Network Convertor etc g J Controller kp ee eeee2s p Do not use loop wiring This may lead to parts damage N signal Amplifier NS2 system and erroneous operation E ee ee T L Controller d Terminal resistor En 21 6 4 3 Enabling Disabling automatic address setting You can enable disable automatic address setting for the indoor unit and the signal amplifier To enable automatic address setting for the indoor unit connect the indoor unit to outdoor units under the same refrigerant system Fig 4 Example Disable Automatic Address setting Example Enable Automatic Address setting Transmission line Transmission
26. LECTRICAL WIRING switisiesssccasa eege ek 18 6 1 The precautions of electrical wiring 18 6 2 Knockout OIE sisirig rennaise 19 6 3 Selecting power supply cable and breaker 20 6 4 Transmission ne 21 6 5 Wiring method soresissnicroseuatinoinisiei 22 T 10 Ti FIELD SETTING 2 eeng EN 24 7 1 Field setting switches cceeeeeeee ee 24 7 2 DIP switch setting 24 7 3 Rotary switch setting outdoor unit address ln Le LEE 26 7 4 Push switch setting 0 eceeeeeeee eee es 26 7 5 Automatic address setting for signal amplifiers ANG Ipdoor UNIS ccs eadec ven dE NEEN ENNEN dans 29 7 6 Terminating resistor setting 29 7 7 Resistance measurement of transmission line Measure with breaker OFF ascnccc 31 PIPE INSTALLATION 0207 ee degen 32 8 1 Sealing test EE 32 8 2 VACCUM PIOCESS eceeeeeeeeeeeeeeeeeeeeee 33 8 3 Additional Charges 33 8 4 Installing insulation cceeeeeeeee eee 35 TIES ERUN enges EE 36 9 1 Pre test run check items c ee 36 9 2 Test operation method 6 0 eeeee ees 36 9 3 CHEGKIISE ere get Ze gek Au cicceuandaneans 38 LED DISPlAy ateniese Eeer denen 38 10 1 Normal operation mode 38 10 2 Error display mode cceeeeeeeeeeees 38 INFORMATION ere bid s Ee ee A0 PART NO 9378945005 02 1 SAFETY PRECAUTIONS Be s
27. VRF SYSTEM OUTDOOR UNIT AJOA72LALH AJU126LALH AJOA90LALH AJ0144LALH AJ 0108LALH A CAUTION R410A REFRIGERANT This Air Conditioner contains and operates 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 personnel only Contents 1 SAFETY PRECAUTIONS ec eeeeeeeeeeneeee tees 2 ABOUT THE PRODUCT deene ierbee eebe 2 1 Caution when using R410A refrigerant 2 2 Special tools for R410A 2 3 ACCeSSOrieS 0 00 2 4 COMbDINATIONS siiecisesiciecrsessenecrsesoniesnesaociaans 2 5 Option parts 2 6 Header seu ett niania RENE aot 3 INSTALLATION WORK ceceeeeeeeeeeeeeeeeeeeeees 3 1 Selecting an installation location 3 2 Drain DEIER e 3 3 Installation dimensions 3 4 Transportation the outdoor unt 3 5 Installation the unit ceiaio 10 4 SYSTEM CONFIGURATION ceeeeeeeeeee ee 11 4 1 System configuration 11 4 2 Pipeselection ENEE ENEE usec 12 5 PIPE INSTALLATION ssicisiesicdccse cence dssaseacdeeacs 13 Belk BraZinG WEE 13 5 2 Indoor unit pipe connections 13 5 3 Piping MONO gz d ietg seg ng AEN ES det 14 5 4 Multiple connections 15 6 E
28. a pressure gauge Cooling low pressure approx 0 8 MPa Heating high pressure approx 3 0 MPa Drain water is discharged smoothly through the drain hose Check it by pouring water Indoor and outdoor unit fans are operating Check them visually Compressor operates after the indoor unit operates Check the operating sound Difference between inlet and outlet temperatures is normal Measure the inlet and outlet temperatures Temperature difference 10 degrees Error is not displayed Check the 7 segment LED display Error blinking or no error code display 10 LED Display You can determine the operating status by the lighting up and blinking of the LED lamp Check the status using the table below 10 1 Normal operation mode Wired remote controller communication error During setting of snowfall mode a ad E 9 2 1 Compressor 2 error E 1 2 2 Wired remote controller signal error E 9 2 2 Compressor 2 overcurrent error E 1 3 1 Communication error between Outdoor unit E 9 3 1 Inverter compressor start up error E 1 4 1 Outdoor unit network communication 1 error E 9 4 1 Trip detection E 1 4 2 Outdoor unit network communicatio
29. a that would not cause problems even if the drain water is discharged from the unit Otherwise provide drainage that would not affect people or objects Install the unit in an area that has no heat sources vapors or the risk of the leakage of flammable gas in the vicinity Install the unit in an area that is away from the exhaust or vent ports that discharge vapor soot dust or debris Install the indoor unit outdoor unit power supply cable transmission cable and remote control cable at least 1 meter away from a television or radio The purpose of this is to prevent TV reception interference or radio noise Even if they are installed more than 1 meter apart you could still receive noise under some signal conditions Keep the length of the piping of the indoor and outdoor units within the allowable range For maintenance purposes do not bury the piping 3 2 Drain processing e The drain water is discharged from the bottom of the equipment Construct a drain ditch around the base and discharge the drain water properly e When installing on a roof perform floor waterproofing properly Drain processing e The drain water from the base of the outdoor unit may Outdoor unit generate during operations i 50 Perform drain processing as necessary SE e When you want to prevent the drain water from leaking at the perimeter constru
30. anufactured 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 It will also cause serious accidents such as refrigerant leakage water leakage electric shock and fire 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 Be sure to install the unit as prescribed so that it can withstand earthquakes and typhoons or other strong winds Improper installation can cause the unit to topple or fall or other accidents Ensure that the outdoor unit is securely installed at a place that can withstand the weight of the unit Improper installation will cause injuries caused by falling unit 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 If a refrigerant leakage occurs during operation immediately vacate the premises and thoroughly ventilate the area If the refrigerant is exposed to fire it will create a hazardous gas Electrical work must be performed in accordance with this Installation manual by a person certified under the nationa
31. are installed to one refrigerant system set the address for each outdoor unit Set the address for all outdoor units Master unit only Factory setting ep He oe 1 mmm 2 re N Cable clip 7 Segment N F LED Lamp ES itch gt Rotary switch S EJ E D Ledin GREEN end RED LED105_ LED104 REFAD ac E CR TE poje asi era SETS eTa E el Smide Simca SW101 sw102 sw103 sw104 ta Push button zs Ki Do not change the factory default settings for SET1 and SET2 Slave unit 1 8HP model 10HP model Slave unit 2 12HP model Forbidden 2 Number of slave units setting for outdoor unit Set the number of slave units connected to one refrigerant system 14HP model Set only the master unit Master unit only Factory setting 1 slave unit connected 2 slave unit connected En 24 Forbidden 16HP model Air conditioner Heater fixed type r d DIP switch 7 7 pP lt LEED 3 Number of outdoor units installed The number of outdoor units installed in one refrigerant system must be set Set for all outdoor units Factory setting Forbidden 7 2 3 Terminating resistor setting Be sure to set the terminal resistor according to specifi cations Set the term
32. aster unit for this item En 26 First press priority 0 0 O _ This item allows you to set the priority item in the cooling cycle operation mode Outdoor unit external input 0 1 e First press priority The operation mode that is configured first will be given priority SE priority 2 1 e Outdoor unit external input priority The operation mode that is configured Priority mode S ES Geen S aa 21 setting Administrative indoor unit 0 2 through the external input terminal CN132 will be given priority priority e Administrative indoor unit priority The operation mode of the administrative indoor unit that is configured using a wired remote control will be given priority Set only the master unit for this item Stiowfall mode Normal operation 2 2 0 0 O his item allows you to operate the outdoor unit fan regularly in order to prevent 22 setting Snowfall mode 0 1 the device from being disabled when the outdoor unit is buried in snow Set only the master unit for this item Standard 30 mins 0 0 O Snowfall Short 1 5 mins 0 This item allows you to configure the interval of the outdoor unit fan 23 operation interval 2 3 operation when Snowfall mode is selected S Short 2 10 mins 0 2 7 W setting Set only the master unit for this item Short 3 20 mins 0 3 Standard 0 0 O Set the high stati
33. ation that is not exposed to high temperatures If the temperature surrounding the breaker earth leakage breaker is too high the amperage at which the breaker earth leakage breaker cuts out may decrease Use a breaker earth leakage breaker that is capable of handling high frequencies Because the outdoor unit is inverter controlled a high frequency earth leakage breaker is necessary to prevent a malfunction of the breaker itself When the electrical switchboard is installed outdoors place it under lock and key so that it is not easily accessible Do not fasten the power supply cable and transmission cable together Always keep to the maximum length of the transmission cable Exceeding the maximum length may lead to erroneous operation The static electricity that is charged to the human body can damage the control PC Board when handling the control PC Board for address setting etc Please keep caution to the following points Provide the grounding of Indoor unit Outdoor unit and Option equipment Cut off the power supply breaker Touch the metal section such as the unpainted control box section of the indoor or outdoor unit for more than 10 seconds Discharge the static electricity in your body Never touch the component terminal or pattern on the PC Board En 18 6 2 Knockout hole e Be careful not to deform or scratch the panel while opening the knockout holes e After opening the knockout ho
34. c pressure mode under the following conditions High static pressure mode 1 2 4 O d High static pressure mode 1 High static pressure mode 2 0 2 When a duct is attached the length of this duct is 150mm or less from the main i e unit and other resistive materials are not at the air flow outlet 30Pa or less High static e i High static pressure mode 2 24 pressure mode k A A setting When a duct is attached the length of this duct is 150mm or more from the main unit or there are other resistive materials at the air flow outlet 80Pa or less Refer to 3 3 3 When there are obstacles above the product for setting the high static pressure mode Set both the master and slave units for this item 25 Setting disabled 2 5 0 0 O Factory default 26 Setting disabled 2 6 0 0 O Factory default 27 Setting disabled 2 Z 0 0 O Factory default 28 Setting disabled 2 8 0 0 O Factory default 29 Setting disabled 2 9 0 0 O Factory default Level 1 stop operation ojo O This item allows you to limit the nominal system capacity or stop the 30 Energy saving Level 2 Limited at 40 3 0 0 1 operation when an energy saving peak cut signal is received at the level Level 3 Limited at 60 0 2 external input terminal CN133 Level 4 Limited at 80 0 3 Set only the master unit for this item Low noise priority 4 0 0 0 O When capacity priority is selected low noise operation mode will be canceled Capacity priority
35. ct a ditch for the drain water as shown in the E figure 10 mm or e Provide a central drain pan as necessary FER En 6 3 3 Installation dimensions When installing the outdoor unit pay attention to the following items e Provide sufficient installation space such as transportation route maintenance space ventilation space refrigerant piping space and passageways Pay attention to the specifications of the installation space as shown in the figure If the unit is not installed according to specifications it may cause short circuit or poor performance The unit may be prone to lapse into non operation due to high pressure protection Do not place obstructions in the air flow outlet direction If there is an obstruction in the outlet direction install an outlet duct When there is a wall in front of the unit provide a space of 500mm or more as maintenance space When there is a wall at the left side of the unit provide a space of 30mm or more as maintenance space An outdoor temperature of 35 degrees in air conditioned operation is assumed for the installation space in this item If the outdoor temperature exceeds 35 degrees and the outdoor unit is operating at a load exceeding its rated ability provide a larger inlet space If you are installing more outdoor units than indicated here please ensure sufficient space or consult your distributing agent as it may affect the performance due to short circuit and other pr
36. digits u fed a a u d Gji Press the ENTER button to set the next item Blinking Y Blinking Press the u d Gl he SELECT button to change the value for the last 2 digits ENTER button to confirm Setting is complete when the lamp lights up A EXIT Press the MODE EXIT button to cancel the setting mode If there is no operation for 5 seconds after the setting the display will return to 2 Setting the first two digits first two digits EES lastiwo digiS ee Ser EE EE EE EES Press the SELECT button to change the value for the last 2 digits Press the ENTER button Press the SELECT button Press the SELECT button 1 mman mmnm D mmm mmn Blinking Blinking Blinking Blinking Press the ENTER button to confirm the value 02 for the last 2 digits Press the SELECT button to select g D D d the next item for the first 2 digits Setting is complete when the lamp lights up Press the ENTER button to set the next item 7 5 Address setting for signal amplifiers 7 5 1 Address setting for signal amplifiers When using signal amplifiers the address for signal amplifiers must be set The address for signal amplifiers can be set automatically from one outdoor unit master unit on the network Refer to the next section Fig Wiring example for automatic address setting for the wiring example
37. e phase missing phase wire error m e gt Outdoor unit PCB microcomputer communication error Outdoor unit EEPROM access error Inverter communication error Inverter error Inverter PCB short interruptions detection Magnetic relay error Database access error Database connection error Software restart error Program runtime error Special operation error Communication adaptor connection error Communication error No data KI alaaa N gt a aR vl Nj m immm m mmm ah fom Vl it a a External input power meter error System tool error m w Inter process communication error Software protection key error including WIBU Key error 3 3 Server client communication error 4 1 Hard disk drive capacity error 4 2 System requirements error 4 3 mimimim m Time error m minim m ojojoj Rush current limiting resistor temp rise protection Outdoor unit transmission PCB Parallel communication error outdoor unit sennsor error Discharge Temp Sensor1 Error Discharge Temp Sensor2 Error Compressor Temp Sensor1 Error Compressor Temp Sensor2 Error Outdoor unit Heat Ex liquid temp sensor error Outdoor Temp Sensor Error Suction Gas Temp Sensor Error Heat sink temp sensor error o N N N N NINININ RST 2 ES esl lalalalalala Sub cool Heat Ex gas inlet tem
38. ections and brazed areas Is the system charged with the specified volume of refrigerant Is the refrigerant circuit address correct Is a breaker installed at the power supply cable of every outdoor unit Are the wires connected to the terminals without looseness and in accordance with the specifications Are the initial settings of the switches of the outdoor unit correctly configured Is the 3 way valve of the outdoor unit open Gas pipe and liquid pipe Is power supplied to the crank case heater for more than 12 hours After checking that the above items are all in order refer to 9 2 Test operation method to test operation the unit If there are problems adjust immediately and recheck OVQ OOG OVLO 9 2 Test operation method Be sure to configure test run settings only when the outdoor unit has stopped operating e Depending on the communication status between the indoor and outdoor units it may take several minutes for the system to start operating after settings for the test run are complete e After the test run settings are complete all the outdoor units and the connected indoor units will start operating Room temperature control will not activate during test operation continuous operation Perform test operation for each refrigerant system You can set cooling test operation or heating test operation with the push button switch on the outdoor unit print circuit board Test operation setting method Use
39. edures to enable automatic address setting on indoor units Check that the rotary switch IU AD on the indoor unit circuit board is set to OO If it is not set to OO it means the address of that device is not set factory default is 00 Turn on the power of the indoor and outdoor units When the system is normal nothing will be displayed on the 7 segment LED display When ERROR is displayed inspect the units Use the MODE EXIT SELECT and ENTER buttons on the outdoor unit print circuit board to configure settings according to the procedures below a eS ye ee 1 FUNCTION Setting First 2 digits Last 2 digits the display when the main power is turned on tf iiee cae ae Automatic address setting for indoor units H Press the MODE EXIT button First 2 digits Last 2 digits l M III 1 oe E f II i i l inki if l Blinking Press the SELECT button until 11 is displayed I Y Press the SELECT button tl a ONE d El es i H SH Press the ENTER button for more than 3 seconds Blinking 1 y Press the SELECT button D It may take about 10 minutes for completing the D WI proces ina ia E 4 When F4 to F9 are displayed continue to press the SELECT Blinking button until F3 is displayed r l I The number of indoor units with normal settings will E PI be displayed at the first 2 digits of the 7 segment LED LI displa
40. for 1 hour after the pressure gauge reads 76 cmHg 6 Remove the charging hose and reinstall the charging cap Do not turn on the power unless all operations are complete After evacuating the system add refrigerant Do not charge the system with a refrigerant other than R410A Always keep to the limit on the total amount of refrigerant Exceeding the limit on the total amount of refrigerant will lead to malfunction during charging of refrigerant Do not reuse recovered refrigerant Use an electronic scale to measure the charging amount of refrigerant Adding more refrigerant than the specified amount will cause a malfunction Charge refrigerant using the liquid pipe Adding refrigerant through the gas pipe will cause a malfunction Add refrigerant by charging the system with the refrigerant in the liquid state If the refrigerant cylinder is equipped with a siphon it is not necessary to place the cylinder upright 8 3 1 Procedure for charging the system with refrigerant 1 Remove the charging cap from the liquid pipe 2 Attach a charging hose to the refrigerant cylinder and connect it to the charging port 3 Add refrigerant by calculating the additional refrigerant volume in accordance with the calculation formula indicated below 4 Remove the charging hose and install the charging cap 5 Remove the body caps gas pipe liquid pipe and oil pipe if multiple units are installed and open the valve
41. inal resistor for every network segment NS If terminal resistor is set in multiple devices the overall communication system may be damaged If terminal resistor is not set in a device abnormal communication may occur e Be sure to set one terminal resistor in a network segment You can set the terminal resistor at the outdoor unit or signal amplifi er e When setting the terminal resistor of a signal amplifi er refer to the installation manual of the signal amplifi er e When setting multiple terminal resistors take note of the following items How many network segments are there in a VRF system Where will you set the terminal resistors in a network segment Condition for 1 segment Total number of outdoor and indoor units and signal amplifiers is less than 64 or the total length of the transmission cable is less than 500m How many outdoor units are connected to one refrigerant system Configure the setting DIP switch SET5 of the terminal resistor of the outdoor units as shown below from conditions to Disable Factory setting Enable Figure Terminal resistor setting NS1 Network segment 1 Set terminal resistor at outdoor units Terminal resistor on i 1 1 d d Fi Tage ies E ee e About the setting of terminal resistor 1 ____ _Masterunit Refrigerant system1_ eet ee ele i Outdoor unit Master unit
42. ion means that the energy saving combination is unavailable When connecting outdoor units install the outdoor unit with the largest nominal system capacity nearest to the refrigerant pipe and indoor unit followed by those with lesser nominal system capacities Outdoor unit 12 Outdoor unit 22 Outdoor unit 3 2 5 Option parts IN The following parts are optional parts specific to R410A refrigerant Do not use parts other than those listed below 2 5 1 Separation tube kit Table A indicates the separation tube to be used when installing multiple outdoor units Table B indicates the separation tube to be used for connecting the outdoor and indoor units Refer to the installation instruction sheet for the outdoor unit branch kit and the separation tubes for installation specifications Table A Separation tube for installing multiple Table B Selection of separation tubes outdoor units UTR BP090X 28 0 or less UTR BP180X 28 1 to 56 0 UTR BP567X 56 1 or more 2 6 Header A header is used for connecting the indoor units Refer to the installation instruction sheet for the header for installation specifications UTR CP567X Table C Selection of header UTR HO906L UTR HO908L 28 0 or less UTR H1806L UTR H1808L 28 1 to 56 0 En 5 3 INSTALLATION WORK Please obtain the approval of the customer when selecting the location of installat
43. ion and installing the main unit 3 1 Selecting an installation location e Install the unit in a location that can withstand its weight and where it will not topple or fall e Calculate the proper refrigerant concentration if you will be installing it in an enclosed location Total amount of replenished refrigerant in refrigerant facility kg Refrigerant concentration kg m 0 3kg m Capacity of smallest room where unit is installed m e Ifthe results of the calculation exceed the concentration limit increase the room surface area or install a ventilation duct A6 Select an installation location by observing the following precautions Install the unit horizontally within 3 degrees Install this unit in a location with good ventilation If the unit must be installed in an area within easy reach of the general public install as necessary a protective fence or the like to prevent their access Install the unit in an area that would not inconvenience your neighbors as they could be affected by the airflow coming out from the outlet noise or vibration If it must be installed in proximity to your neighbors be sure to obtain their approval If the unit is installed in a cold region that is affected by snow accumulation snow fall or freezing take appropriate measures to protect it from those elements To ensure a stable operation install inlet and outlet ducts Install the unit in an are
44. ion level against dust and water 14 Working temperature Working temperature 15 Condition of cooling heating Dry bulb temperature and wet bulb temperature under standard cooling heating condition 16 Condition of max cooling Dry bulb temperature and wet bulb temperature at maximum electric current and input 17 Manufacture year Manufacture year 18 Origin Origin country 19 Manufacturer Manufacturer FUJITSU GENERAL LIMITED Address 1116 Suenaga Takatsu ku Kawasaki 213 8502 Japan FUJITSU GENERAL LIMITED 1116 Suenaga Takatsu ku Kawasaki 213 8502 Japan
45. ire e Attach the connecting cables securely to the terminal Or secure it firmly with a wiring suppressor Loose connection will lead to malfunction electric shock and fire e Install a breaker earth leakage breaker to cut off all AC main current at the same time If you do not install a breaker earth leakage breaker it may cause electric shock and fire Be sure to install the refrigerant pipe before operating the compressor If the refrigerant pipe is not installed and you operate the compressor while the valve is open air will be sucked into the system and abnormal pressure will occur in the cooling cycle This will damage the unit and cause injuries This mark indicates procedures which if improperly performed might possibly result in personal harm to the user or damage to property Z CAUTION e 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 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 Area that generates substances that adversely affect the equipment such as sulfuric gas chlorine gas acid or alkali It will cause the copper pipes and brazed joints to corrode which can cause refrigerant leakage Area containing equipment that ge
46. it may cause to damage the unit e Use the sufficiently strong rope to bear the unit s weight e Place the protective board or filler cloth at the place where the cabinet may come into contact with rope to prevent from damages Without using them cabinet may cause to damage or deform e During the hanging unit make sure to keep the unit horizontally to prevent the drop e Be careful not to shock the impacts during the hanging En 9 Conveying by forklift Fig B e When using the forklift to convey the unit pass the forklift arms through the opening space as shown in below Front Bottom of the wooden delivery pallet Side Space between pallet and cabinet e Enable to remove the pallet from cabinet e Be careful not to be damaged Conveying by forklift Manual forklift hand fork e When using the manual forklift to convey the unit pass the forklift arms through the opening space between pallet and cabinet from side Fig B AJoA72LALH AJoA90LALH AJo108LALH AJo126LALH lt Front gt lt Side gt AJo144LALH e Ga Fork forklift or Fork Forklift Delivery pallet Fork Manual forklift i protective boards opening space 3 5 Installation the unit e Install the unit horizontally within 3 degrees Fig A Unit mm e Install A or more anchor bolts at the 8 locations indica
47. l 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 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 Securely install the electrical box cover on the unit An improperly installed electrical box cover can cause serious accidents such as electric shock or fire through exposure to dust or water 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 After the installation make sure there is no refrigerant leakage If the refrigerant leaks into the room and becomes exposed to a source of fire such as a fan heater stove or burner it will create a hazardous gas Use a wall hole pipe Otherwise it may cause a short circuit En 2 e Do not place the outdoor unit near the handrail of the balcony Children may climb onto the outdoor unit lean over the handrail and fall over e Use only a specified power cable Poor connection poor insulation and exceeding the allowable current will lead to electric shock and f
48. le remove the burr on the edges to prevent snapping of wires It is recommended to apply rust proof paint on the edges to prevent rust Electric wires can be connected from the front or from the left Knockout holes are prepared so that wiring can be made from two different directions Use the knockout holes on the front and the left separately when necessary Unit mm Unit mm 243 7 922 2 knockout hole 22 2 _ 437 22 2 N knockout hole oL N o En 19 6 3 Selecting power supply cable and breaker e Regulation of wire size and circuit breaker differs from each locality please refer in accordance with local rules Refer to the table for the wiring and breaker specifications of each installation condition 1 Selecting power supply cable and breaker when connecting one outdoor unit AJOA72LALH AJOA90LALH AJO108LALH AJO126LALH AJO144LALH 100mA 0 1sec or less 1 These values are recommended data 2 Specification Use conformed cord with Type 245 IEC57 3 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 Fig In case of connected outdoor unit breaker earth leakage breaker Transmission cable 230 V 19 50 Hz Indoor unit Power supply cable OK yam v Breaker 400 V 3
49. multiple outdoor units set the nearest outdoor unit to the indoor unit on the refrigerant pipe as the master unit When connecting multiple outdoor units install the outdoor unit with the largest nominal system capacity nearest to the indoor unit and on the refrigerant pipe followed by those with less nominal system capacities Always keep to the limit on the total amount of refrigerant Exceeding the limit on the total amount of refrigerant when charging will lead to malfunction A In case of one outdoor unit connected From outdoor unit to the farthest indoor unit atf 150m atp 150m actual pipe length From the first separation tube to the farthest indoor unit f 60m p 60m actual pipe length Difference in height between outdoor units and indoor units H1 50m For the indoor unit stated below 40m For the outdoor unit stated below Difference in height between indoor units and indoor units H2 15m H3 15m Total pipe length atft h j l n p q stu 700m Total refrigerant amount 31 5kg B In case of two outdoor unit connected From outdoor unit to the farthest indoor unit ate f 150m ate p 150m actual pipe length Difference in height between outdoor units and indoor units H1 50m For the indoor unit stated below 40m For the outdoor unit stated below From the first separation tube to the farthest indoor unit f 60m p 60m actual pipe length Difference in height between indoor units and indoor units H2 H3 H2 15m
50. n 2 error E 91 5 5 Compressor motor loss of synchronization E 1 4 3 Indoor unit network communication error z E 9 7 1 Outdoor unit fan motor lock error E 1 4 4 Peripheral device network communication error Sulceor unit E 9 7 4 Outdoor unit fan motor undervoltage ee EIB 1 Initial setting scan error GEES E 9 7 5 Outdoor unit fan motor Communication z S Number of indoor units excessive 400 error ES EISE E 9 9 1 4 way valve error exceeded Elals l3 Number of outdoor units excessive 100 EA PON OM Outdoor unit error exceeded E 1 5 4 Data acquisition error E 9 U 2 Slave unit error E 1 5 5 Setting range error E A 1 1 Discharge temperature 1 abnormal E 1 6 1 Transmission PCB connection error E A 2 1 Discharge temperature 2 abnormal E 1 6 2 Adaptor Convertor connection error E A 3 1 Compressor1 temperature abnormal E 1 6 3 LAN communication error E A 3 2 Compressor2 temperature abnormal E 2 1 1 Initial setting error Refrigerant system E AJ 4 1 High pressure abnormal E 2 6 1 Duplicate address error abnormal E A 4 2 High pressure protection1 E 2 6 2 Refrigerant circuit address setting error E A 4 3 High pressure protection2 s 8 E 2 6 3 Node address setting error EAR 1 Low pressure abnormal Function setting E 21 7 1 Master unit slave unit set up error EVAIA 2 Pomp down error E 2 8 1 Auto addres
51. n be ignorable when the distance from a wall or product etc is larger than 2m When installing with the REAR of the outdoor unit facing the wall side Condition Necessary installation space When B2400 mm L62 200 mm SE When 20 B lt 400 mm L6 200 400 B x3 mm Fig 8 Single installation Fig 9 Multiple installations lt Top view gt lt Top view gt lt Rear gt re lt Rear gt 4800mm or more d 200mm 200mm lt Front gt lt Front gt 8 200mm B B 200mm 200mm or more or more or more Example When B is made 200mm L6 200 400 200 x3 800mm When installing with the FRONT of the outdoor unit facing the wall side Fig 10 lt Top view gt Wall Fig 11 lt Top view gt Wall 500mm 500mm lt Rear gt or more or more EO OOL Lal JL ron Al 200mm 20mm or 20mm or 200mm or more or more more more En 8 2 Concentrated Installation e The wall without height restrictions must not exist on the both sides left right of outdoor unit Also must not exist on the both sides front rear of outdoor unit e Ventilation resistance can be ignorable when the distance from a wall or product etc is larger than 2m Fig 12 Fig
52. nerates electromagnetic interference It will cause the control system to malfunction preventing the unit from operating normally 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 Avoid installing the unit at places where it will come into contact with animals urine or ammonia 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 Ground the unit Do not connect the ground wire to a gas pipe water pipe lightning rod or a telephone ground wire Improper grounding may cause electric shock Perform draining for the unit according to the Installation manual Check that the water is properly drained If the drain processing is improperly installed water may drip down from the unit wetting the furniture Do not touch the fins with bare hands Regulation e This unit must be connected to a power supply with impedance of 0 33 ohm and below lf the power supply does not satisfy this requirement please consult the power supplier e This product is intended for professional use Be sure to use a dedicated power circuit Never use a power supply shared by another appliance En 3 2 ABOUT THE PRODUCT 2 1
53. oblems 3 3 1 When install near by limited height wall 1 Single and multiple installations There are no restrictions on the height of the side wall e Provide installation spaces L1 and L2 in accordance with the table below according to the wall height front side rear side conditions e Provide installation spaces other than L1 and L2 in accordance with the conditions shown in the figure below e Ventilation resistance can be ignorable when the distance from a wall or product etc is larger than 2m When H1 is 1500 mm or less L12500 mm When H1 is 1500 mm or more L12500 h1 2 mm When H2 is 500 mm or less L22100 mm When H2 is 500 mm or more L22100 h2 2 mm Fig 1 BEE Fig 2 Single installation Fig 3 Multiple installations lt Front gt lt Rear gt lt Top view gt lt Top view gt t lt Rear gt lt Front gt 30mm or 20mm or 20mm or 10mm or 30mm or more 10mm or more more more more more Wall Wall 2 Concentrated installation e Provide installation spaces L3 L4 and L5 in accordance with the table below according to the wall height front side rear side conditions e Provide installation spaces other than L3 L4 and L5 in accordance with the conditions shown in the figure below e Ventilation resistance can be ignorable when the distance from a wall or product etc is larger than 2m
54. on Sheet of the outdoor unit branch kit En 16 Fig Examples of multiple unit installation Example 1 Example 4 Master unit Slave unit1 Slave unit2 Master unit D Example 2 8 Slave Master unit Slave unit Slave uni unt Example 3 Master unit Slave unit1 Slave unit2 Slave unit2 Z CAUTION To prevent the oil from settling in the stopped unit install the pipes between the outdoor units so that they are level or are tilted upward to the outdoor units 1 Examples of multiple unit installation are shown below a Installable patterns b Non installable patterns Master Slave Slave aste Slave jeza GOOD unit unit1 unit 2 NO GOOD sr Danie unit 2 e To indoor unit gt To indoor unit E TS Master Slave Slave jpm S m p Sa GOOD unit 2 unit unit 1 NO GOOD unit Kat unit 2 E E E To indoor unit To indoor unit Slave D GOOD Master Sars Lunit2 NO GOOD Master Slave Slave unit m El EI To indoor unit
55. onnecting multiple units set the unit with the largest capacity as the master unit and the rest as the slave units Refer to 7 Field Setting e When connecting multiple units use the optional outdoor unit branch kit Outdoor Capacity 2 Unit Uniti 2 Unit2 3 Unit Unit1 Unit2 Unit3 To indoor unit To main pipe To outdoor unit _ Liquid pipe Ps Outdoor unit Field supply ae branch Gas pipe Field supply To outdoor unit kit Optional En 15 Restriction when install Be sure following restriction 1 Installation angle Outdoor unit branch kit A Horizontal S Vertical To indoor unit To outdoor unit To outdoor unit S EN or next branch kit EA No good No good No good ek WK eg else C B e Oo 6 40 A VITATTTT TTT TTT d Q A DN 7 F S E Ki e Install the outdoor unit branch kit horizontally within 0 to 10 so that the refrigerant separates evenly e Do not install the outdoor unit branch kit vertically 2 Straight pipe length To indoor unit To main pipe t t To outdoor unit 0 5m or more S To outdoor 0 5m or more To outdoor aad a De unit To indoor unit t To outdoor unit To main pipe t To outdoor unit e Leave the distance 0 5m or more for straight part to outdoor unit branch kit 3 For details refer to the Installation Instructi
56. p sensor error Sub cool Heat Ex gas outlet temp sensor error N N Liquid pipe temp sensor1 error Liquid pipe temp sensor2 error Current sensor error Discharge pressure sensor error Suction pressure sensor error High pressure switch 1 error mimimim mimim m mu n mmn m 0 o Co SID gt Gr 62 Go aja w gt gt n gt High pressure switch 2 error ad MT EPrpPuH d dnooco En 39 Item 11 INFORMATION Main contents of label Detail Model name Model name Serial number Serial number Phase rated voltage and frequency Weight Product weight 1 2 3 Electric characteristics 4 5 Capacity Cooling heating capacity under cooling heating condition refer to item 15 Current Electric current during cooling heating operation under cooling heating condition refer to item 15 Input power Input during cooling heating operation under cooling heating condition refer to item 15 Max Over Current Maximum electric current temperature condition is max cooling condition refer to item 16 9 Air circulation Air circulation 10 Noise level Noise level 11 Refrigerant Refrigerant type and initial charging amount 12 Max pressure HP LP Means pressure of High Pressure side Low Pressure side 13 Protection Protect
57. play 7 display En 27 2 Setting method KM 1 FUNCTION Setting First 2 digits Last 2 digits Fii Blinking Press the Fie Blinking 7 segment LED display LED105 LED104 the display when the main power is turned on Press the MODE EXIT button SELECT button Use the MODE EXIT SELECT and ENTER buttons to configure settings according to the procedures below 1 FUNCTION Setting D Setting the first two digits 3 Setting the last two digits If no setting is made the factory default setting will be displayed When F3 to F9 are displayed continue to press the SELECT button until F2 is displayed Pres the ENTER button 2 Setting the Blinking 3 Setting the H Y emar LA LS LS Blinking SELECT y Every press of the button will change the setting number for the first 2 digits he Ci Cl Blinking En 28 Press If there is no operation for 5 seconds after the setting the display will return to 2 Setting the first two digits Press the ENTER button Continue to press the SELECT button until the desired number appears at the last 2
58. power supply to the transmission line terminal board Improper wiring can damage the entire system Install a breaker earth leakage breaker in accordance with the related laws and regulations Connect the connector cord securely to the terminal Faulty installation can cause a fire Make sure to secure the insulation portion of the connector cable with the cord clamp A damaged insulation can cause a short circuit Never install a power factor improvement condenser Instead of improving the power factor the condenser may overheat Before servicing the unit turn the power supply switch OFF Then do not touch electric parts for 10 minutes due to the risk of electric shock Make sure to perform grounding work Improper grounding work can cause electric shocks Z CAUTION The primary power supply capacity is for the air conditioner itself and does not include the concurrent use of other devices Connect the power cables in positive phase sequence If they are connected in negative phase sequence an error will be displayed If there is a missing phase connection the unit will not operate normally Do not connect a N phase neutral phase cable to other phases misconnection Wrong wiring will lead to parts damage Do not use crossover power supply wiring for the outdoor unit If the electrical power is inadequate contact your electric power company Install a breaker earth leakage breaker in a loc
59. s 6 Close the body caps 7 After adding refrigerant indicate the added charging volume on the unit Tighten the body caps and charging caps to the torque values specified in the Table A To open and close the valves Use an M4 hexagon wrench for liquid and oil pipes Use an M10 hexagon wrench for gas pipes 8 3 2 Checking total amount of refrigerant and calculating the amount of refrigerant charge to be added The amount of refrigerant charge to be added is the total value of the basic refrigerant charge amount and the value calculated from the length of the liquid pipe e Round up the value to two decimal places En 33 AJOA72LALH AJOIA90LALH 10HP 11 20 0 AJO108LALH 12HP 11 80 1 20 AJO126LALH 14HP 11 80 3 30 AJO144LALH 1 Calculation of additional amount for outdoor unit a a a Total Outdoor unit1 Outdoor unit2 Outdoor unit3 A additional amount for additional amount for additional amount for outdoor unit outdoor unit outdoor unit kg kg kg kg 2 Calculation of additional amount for pipe length Total length of Total length of Total length of 219 05 mm b 015 88 mm 212 70 mm b B liquid pipe x 0 268 liquid pipe 0 178 liquid pipe x 0 114 kg m kg m kg m m m kg kg kg Total leng
60. s setting error E A C 4 Heat sink temperature abnormal E 2 8 2 Node setting error E C 1 1 Main PCB error E 2 8 3 Manual store 2 error E C 2 1 Transmission PCB error E 2 8 4 Signal amplifier auto address error E C 3 1 PCB 1 error E 3 1 3 Indoor unit Power frequency abnormal E C 4 1 PCB 2 error E 3 2 1 Indoor unit PCB Model information error E C 5 1 PCB 3 error E 3 2 3 Indoor unit EEPROM access error Peripheral device E C 6 1 PCB 4 error E 3 5 1 Manual auto switch error PCB component E C 7 1 PCB 5 error Indoor unit PCB El3tz j4 Indoor unit transmission PCB Parallel trouble E c 8 1 Input device error Switch error communication error Es Network convertor PCB error 1 E C 9 1 Display device error E 3 8 2 Network convertor PCB error 2 E C A 1 EEPROM error E 3 8 3 Network convertor PCB error 3 EAVES Sensor error E C J 1 Other parts error En 38 Indoor unit sensor error Room temp sensor error Indoor unit Heat Ex inlet temp sensor error Indoor unit Heat Ex Middle temp sensor error Indoor unit Heat Ex outlet temp sensor error Indoor unit actuator error Indoor unit fan motor error Drain pump error ajajaja sl s a E N Ni Nis alalrmtolrm a a Indoor unit error outdoor unit PCB Electrical component Switch error m immm m m m m Outdoor unit revers
61. t No Good crossover power supply wiring prohibited En 20 6 4 Transmission line e Caution when wiring cable When stripping off the coating of lead wire always use the exclusive tool such as a wire stripper If there is no exclusive tool available necessarily carefully strip the Pes atone side Wes bwicied Twig coating by a cutter etc so that the conductive wire is gt SK ee not damaged If it is damaged it may lead to an open circuit and a NO GOOD NO GOOD OK communication error Shorted at edge Shorted at root 2 wires e Pay attention to the following points while attaching o wires on the terminal board OK Do not attach 2 wires on one side Do not twist wires NO GOOD NO GOOD Do not cross the wires Do not shorted at edge at root 6 4 1 Transmission wiring specifications Follow the specifications below for the transmission cable Transmission cable 0 33mm 22AWG LEVEL 4 NEMA non polar 2core LONWORKS i twisted pair solid core diameter 0 65mm compatible cable 6 4 2 Wiring rules 1 Total length of transmission cable Fig 1 Total transmission line length MAX 3600m sn Outdoor unit EF EG GH HJ HK KL lt 3600m Fig 2 ve system In the following cases Signal Amplifier is required B p S EE When the total length of the transmission line E a TES a be 4 exceeded 500m Aa
62. te control Transmission Power supply Remote control L D Y1 Y2 Y3 Breaker Breaker We ELELE Me EEI Power supply Power supply Power supply 230V 10 50Hz Remote 230V 10 50Hz Remote 230V 10 50Hz Remote control unit control unit control unit The wiring example for outdoor and indoor units is shown in figure Remove the cover of the electrical component box and follow the terminal plate to connect the electric wires to the terminal After connecting the electric wires secure them with a cable clamp Connect the wires without applying excessive tension En 22 Secure with a cable clamp as shown in the figure below Binder Cable clip Atom clip Transmission cable Power supply cord Tightening torque M3 screw 0 5 to 0 6 N m 5 to 6 kgf cm M8 screw 5 0 to 7 0 N m 50 to 70 kgf cm Use a ring terminal to connect the electric wires to the power supply terminal board Sealing transmission cable Connect both ends of the sealed wires of the transmission cable to the earth terminal of the equipment or to the earth scre
63. ted by arrows 160 A 460 Fig A 80 80 e Place the left and right anchor bolts at a distance further away than the dimensions of A in the Table A Excluding the case where anchor bolts are installed at 8 locations To minimize vibration do not install the outdoor unit directly on the ground Instead install it on top of a firm platform such as concrete block Fig B e The foundation base should be able to support the product and the foot i i width of the product should be more than 46 5mm Modelname Aa B NN Bottom view 7 8 12x17 hole N Table A Depending on the installation condition vibration during the operation A72LALH of the unit may cause noise and vibration AQOLALH Install vibration proofing materials such as rubber pads 108LALH e Consider the removal space of the connection piping when installing 126LALH the foundation e Secure the equipment firmly with anchor bolts washers and nuts ae Fig B Fig C NO GOOD OK OK J SES T More than Do not use a four corner support foundation When installing piping from the bottom of the outdoor units the required space under the outdoor unit 200mm Install the branch kit horizontally En 10 4 SYSTEM CONFIGURATION 4 1 System configuration Z CAUTION When connecting
64. th of Total length of Total 29 53 mm b 06 35 mm liquid pipe x 0 058 liquid pipe x 0 021 kg m kg m m m kg kg kg 3 Calculation of additional charge refrigerant C A B Round up C to 2 decimal place kg 4 Calculation of factory charged amount d S S Total D Outdoor unit1 Outdoor unit2 Outdoor unit3 factory charged amount factory charged amount factory charged amount kg kg kg kg 5 Total refrigerant amount check E C D kg Note Check the total refrigerant amount under the following conditions For 1 outdoor unit per refrigerant system Total amount of refrigerant 31 5kg E S 31 5kg For 2 outdoor units per refrigerant system Total amount of refrigerant S 63kg E S 63kg For 3 outdoor units per refrigerant system Total amount of refrigerant 94 5kg E S 94 5kg En 34 lt Calculation gt e When there are three outdoor units AJO144LALH AJZ1126LALH AJZ1108LALH connected to one system 1 Calculation of additional amount for outdoor unit A 3 30 kg 3 30 kg 1 20 kg 7 80 kg 2 Calculation of additional amount for pipe length If liquid pipe piping length is the following 19 05 50m 15 88 25m 12 70 Om 9 53 20m 6 53 15m Additional charge volume B 50 m x0 268 kg m 25 m x0 178 kg m 0 m x0 114 kg m 20 m x0 058 kg m 15 m x0 021 kg m 19 325kg 3 Calculation of additional charge refrigerant C A B 7 80 kg 19 33 kg 27
65. ure to read this Installation manual thoroughly before installation The warnings and precautions indicated in this Installation manual contain important information pertaining to your safety Be sure to observe them After installing the unit perform a test run to make sure the unit operates normally Then explain to the customer how to operate and maintain the unit Please pass this Installation manual together with the Operating manual to the customer Please ask the customer to keep the Operating manual and Installation manual at hand for future reference during the moving or repair of the main unit A WARNING This mark indicates procedures which if improperly performed might lead to the death or serious injury of the user Consult the retail store or professional technicians to install the main unit according to the Installation manual Improper installation will cause serious accidents such as refrigerant leakage water leakage electric shock and fire Manufacturer s guarantee will be invalid when instructions in the Installation manual are ignored during installation For installation purposes be sure to use the parts supplied by the manufacturer or other prescribed parts Using non specified parts will cause serious accidents such as falling unit refrigerant leakage water leakage electric shock and fire To install a unit that uses the R410A refrigerant use dedicated tools and piping materials that have been m
66. w near the terminal Be very careful that the screws are not overly tightened as the wires may snap and the terminal may be damaged Wind with insulation tape to prevent short circuit ee Use one side of the Connect both ends of sealed twisted pair cable cable to earth Be sure to use one side of a twisted pair cable when using transmission cable with two sets of twisted pair cables En 23 7 FIELD SETTING A Discharge the static electricity from your body before setting up the DIP switches Never touch the terminals or the patterns on the parts that are mounted on the board 7 1 Field setting switches Remove the front panel of the outdoor unit and the cover of the electrical component box to access the print circuit board of the outdoor unit Print circuit board switches for various settings and LED displays are shown in the figure 7 2 DIP switch setting 7 2 1 List of Settings SET3 and SET5 must be set for the DIP switch Configure the settings before turning on the power Settings for SET1 SET2 and SET4 DIP switches are factory default ones Do not change them Forbidden Forbidden Outdoor unit address setting Setting for number of slave units Forbidden 7 2 2 Number of outdoor units installed Forbidden Terminal resistor setting Settings to be configured locally 1 Outdoor unit address setting When two or three outdoor units
67. y The number of indoor units with error will be displayed at the last 2 digits Press the ENTER button Blinking l d ji l d l l 1 i i Blinking 1 i i d d ji l i l l i l I l l l l l l l 1 l i l Fg i Blinking i 1 l l l l l l l 1 t i l aa s Press the ENTER button NOTE After the ENTER button is pressed the end processing will occur for about 30 seconds During this period the 7 segment LED will blink En 30 7 7 Resistance measurement of transmission cable Measure with breaker OFF Do not turn on the power if the resistance between the terminals of the transmission cable is abnormal Otherwise the circuit board may be damaged Measure the resistance between two terminals of a transmission cable 1 Transmission cable connecting indoor units outdoor units and signal amplifiers Measure the resistance of the signal amplifier terminal and the terminal of the indoor and outdoor units connected farthest away from the device where terminal resistor is measured A value from the table is displayed depending on the distance from the signal amplifier and the device where the terminal resistor is set This value is an estimate 2 Transmission cable connecting outdoor units in a refrigerant system The resistance between the terminals of the transmission cable is 45 600 This value is an estimate

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