INSTALLATION MANUAL MANUEL D'INSTALLATION
Contents
1. CAUTION Do not install this 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 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 fail or the unit to leak water Area that generates substances that adversely affect the equipment such as sulfu ric 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 generates 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 Area where small animals may live It may cause failure smoke or fire if small animals enter and touch internal electrical parts Area where animals may urinate on the unit or ammonia may be generated Install this unit power supply cable and transmission cable at least 40 in 1 m away from a television or radio receivers The purpose of this is to prevent TV reception interference or radio noise Even if they are installed more than 40 in 1 m apa2. In Case of Improper Installation The manufacturer shall in no way be responsible for improper installation or mainte nance service including failure to follow the instructions in this document Li 1 2 SPECIAL PRECAUTIONS When Wiring ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH ONLY A QUALIFIED EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM Do not supply power to the unit until all wiring and tubing are completed or recon nected and checked Highly dangerous electrical voltages are used in this system Carefully refer to the wiring diagram and these instructions when wiring Improper connections and inad equate earthing grounding can cause accidental injury or death Earth Ground the unit following local electrical codes Connect all wiring tightly Loose wiring may cause overheating at connection points and a possible fire hazard When Transporting Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fingers When Installing In a Ceiling or Wall Make sure the ceiling wall is strong enough to hold the unit s weight It may be neces sary to construct a strong wood or metal frame to provide added support ln a Room Properly insulate any tubing run inside a room to prevent sweating that can cause
3. gt Strip 1 in 25 mm Loop Screw with Screw with special washer special washer j Cable end Loop v Cable end Loop z Wi Terminal block E Cable Do not apply branch wiring It may result electric shock or fire Z WARNING When using solid core cables do not use the ring terminal If you use the solid core cables with the ring terminal the ring terminal s pressure bonding may malfunction and cause the cables to abnormally heat up B For strand wiring 1 Use ring terminals with insulating sleeves as shown in the figure below to connect to the terminal block 2 Securely clamp the ring terminals to the cables using an appropriate tool so that the cables do not come loose 3 Use the specified cables connect them securely and fasten them so that there is no stress placed on the terminals 4 Use an appropriate screwdriver to tighten the terminal screws Do not use a screwdriver that is too small otherwise the screw heads may be damaged and prevent the screws from being properly tightened 3 Do not tighten the terminal screws too much otherwise the screws may break 3 See the table for the terminal screw tightening torques 3 Please do not fix 2 power supply cables with 1 screw Strip 3 8 in 10 mm A S Screw with special washer Cable ES Ring terminal Sleeve Screw with special washer Ring
4. 4x25 wall Cable tie For mounting the transmission 2 cable Cable clamp For mounting the cable UTP UTP UTP Escape mim RUO1AH RUO1BH RUO1CH 3 PRODUCT SELECTION Select the RB unit to fit the total capacity and number of the indoor units to be connected downstream Refer to Tables 1 and 2 a Calculation example If the connected indoor units model code is 07 09 12 and 18 Q1 7 500 Btu h 9 500 Btu h 12 000 Btu h 18 000 Btu h 47 000 Btu h gt Select UTP RUO1BH 1 U Indoor unit RB RB unit O U Outdoor unit Table 1 Conditions in which connection is possible Maximum number of connect Model Name able indoor units Indoor unit capacity Reducer A a b UTP RUO1AH 7 500 lt Q1 lt 27 000 Btu h Up to 3 units UTP RU01BH 7 500 lt Q1 lt 60 000 Btu h Up to 8 units UTP RU01CH 7 500 lt Q1 lt 96 000 Btu h Up to 8 units Ct TI 4 a 3 8 9 52 O D b 1 2 12 7 1 D Reducer B a b C f 2 1 a 1 2 12 7 O D b 5 8 15 88 1 D Reducer C a b Pp NE 1 a 1 2 12 7 0 D b 3 8 9 52 1 D Reducer D a b CT 2 a 3 4 19 05 O D b 7 8 22 22 1 D Reducer E a c b Tm a 3 4 19 05 O D b 1 2 12 7 1 D c 5 8 15 88 1 D Reducer F a b L M f a 3 4 19 05 O D b 5 8 15 88 1 D 2 4 Optional parts The following optional parts are available EXTERNA
5. damage the product A CAUTION Never bundle the power supply cable and transmission cable together i A E F RE i Separate these cable by 2 in 50 mm or more o suction gas pipe discharge gas pipe liquid pipe and gas pipe with heat Bundling these cables together will cause miss operation or breakdown Use heat insulation with heat resistance above 248 F 120 C When handling PC board static electricity charged in the body may cause In addition if the humidity level at the installation location of the refrigerant piping is malfunction of the PC board Follow the cautions below expected to exceed 70 install heat insulation around the refrigerant piping If the Establish an earth ground for the RB units indoor units outdoor units and expected humidity level is 70 80 use heat insulation that is 9 16 in 15 mm or peripheral devices thicker and if the expected humidity exceeds 80 use heat insulation that is 13 16 in Cut power breaker off 20 mm or thicker Touch metal part of the RB units indoor units and outdoor units for more than If heat insulation is used that is not as thick as specified condensation may form on 10 seconds to discharge static electricity charged in the body the surface of the insulation In addition at 68 F 20 C use heat insulation with Do not touch terminals of parts and patterns implemented on PC board heat conductivity of 0 045 W m K or less En 7 7 2
6. Changing the positioning of the control box 5 6 1 Attaching to the opposite horizontal face Z CAUTION Change the positioning of the control box on site before performing the installation Change the control box attachment side as required 1 Remove Cover A 4 screws 2 Remove Cover B 1 screw 3 Remove the cable from the cable clamp 4 Remove the control box cover 2 screws 5 Remove the control box 4 screws Control box cover Cable clamp 3 6 Change the control box attachment position At this time move the control box up or down 7 Attach the cable clamp accessory Thereafter put the cable in the cable clamp 8 Fix the control box position 4 screws 9 Attach Cover B to Cover A 1 screw Attach 1 screw to the reverse side from the removed part 10 Attach Cover A 4 screws 11 Attach the control box cover 2 screws Control box 8 Control box cover Cover A Cable clamp Accessory 5 6 2 If attaching on the top Change the control box attachment side as required 1 Remove Cover A 4 screws 2 Remove Cover B 1 screw 3 Remove the cable from the cable clamp 4 Remove the control box cover 2 screws 5 Remove the control box 4 screws En 5 Control box _ Control box Ca cover s N CR v TS E 6 Change the control box 11 attachment position y 7 Attach the cable clamp ac
7. Electrical requirement Voltage rating 208 230 V Operating range 187 to 253 V Select the power cable type and size in accordance with relevant local and national regulations Specifications for local wiring power cord and branch wiring are in compliance with local code Select the correct cable type and size according to the country or region s regulations Max wire length Set a length so that the voltage drop is less than 2 Increase the wire diameter when the wire length is long Refer to the table for the breaker specifications of each installation condition Perform the power crossover wiring within the range of the same refrigerant system When the crossover wiring is done make a connection for RB units to satisfy conditions A and B below A Current breaker requirements Model MCA MAX CKT BKR Fuse capacity UTP RU01AH 0 25A UTP RU01BH 0 25A 15A UTP RU01CH 0 38 A MCA Minimum Circuit Ampacity MAX CKT BKR Maximum Circuit Breaker When the power crossover wiring is done make it so that the total of the MCA of the connected RB units and indoor units does not exceed the 11 A For indoor unit MCA refer to the indoor unit installation manual f the capacity of connected RB units and indoor units exceeds the upper limit either add breakers or use a breaker with a greater capacity B Ground Fault Equipment Breaker requirements Breaker capacity Connectable RB unit
8. x lt 36 000 Reducer 36 000 lt x lt 48 000 1 2 12 7 3 4 19 05 1 2 12 7 3 4 19 05 7 8 22 22 Reducer 5 8 15 88 Reducer 7 8 22 22 lt 48 000 lt x lt 60 000 Reducer 3 UTP RUO1CH Table 1 RB unit pipe size Suction gas pipe Discharge gas pipe Gas pipe in mm in mm in mm 7 8 22 22 7 8 22 22 Table 3 Connection pipe selection for when 2 to 8 indoor units are connected Total capacity of indoor unit Btu h Suction gas pipe fin mm Discharge gas pipe in mm Gas pipe fin mm 5 8 15 88 7 8 22 22 es 7 8 22 22 72 000 lt x lt 96 000 7 8 22 22 3 4 19 05 7 8 22 22 60 000 lt x lt 72 000 4 Indoor unit model codes and capacity Table 4 Indoor unit model codes and model selection capacity Model code 07 09 12 14 18 Indoor unit capacity 7 500 9 500 12000 14 000 18 000 Btu h Model code 24 30 36 48 60 Indoor unit capacity 24000 30 000 36 000 48 000 60 000 Btu h 6 2 Selecting the pipe material Copper pipes It is necessary to use seamless copper pipes and it is desirable that the amount of residual oil is less than 0 04 oz 100 ft 40 mg 10 m Do not use copper pipes having a collapsed deformed or discolored portion especially on the interior surface Other wise the expansion valve or capillary tube may become blocked with contaminants As an air conditioner
9. 147 634 11 3 4 298 513 16 Indoor unit side Outdoor unit side Service access Unit in mm Indoor unit side Outdoor unit side service access 15 3 4 400 15 3 4 400 Installation limit Unit in mm Ceiling hanging 1 20 or more Pra IED Z 20 500 or more 20 500 or more E 1 20 or more 5 2 2 Wall hanging Unit in mm 198 7 7 13 16 1 4 Installation limit Unit in mm E g If installing a duct model vertically 12 300 or more 1 20 or more 1 20 or more 5 3 Hanger bolt installation N WARNING Take into consideration whether the place you install the main unit can fully withstand its weight and if necessary install a hanger bolt after reinforcing with a beam Use a M8 or M10 size hanger bolt 5 4 Hanging metal fixtures Support the connected piping within 40 in 1 m in front of and behind the main unit using hanging metal fixtures as shown in the following diagram If you place excessive weight on the main units hanging metal fixture the unit may fall off 5 5 Installing the hanger Mount the hanger accessories 1 If hung from the ceili Ce hung from the ceiling Tapping screw A x6 Hanger x3 accessories _ accessories En 4 2 If hung on a wall Tapping screw A x 4 accessories re a da BAG Hanger x 2 accessories ave ie vi 5 6
10. 24V i rer Load l Pl resistance E O l l RB unit Input device connected unit RB unit EH COOLING HEATING PRIORITY FUNCTION O Edge input only Connector Command Input signal CNAO1 or CNAO2 Cooling priority CNAO1 or On f CNAO2 Off Heating Cooling T lL 10 TEST RUN 10 1 Test run using Outdoor unit PC board Priority mode Refer to the Installation Manual for the outdoor unit to perform the test run using the outdoor unit 10 2 Test run using Remote Controller Refer to the Installation Manual for the remote controller to perform the test run using the remote controller 11 CHECK LIST Pay special attention to the check items below when installing the RB unit s After installation is complete be sure to check the following check items again CHECK CHECK ITEMS BOX If not performed correctly Has the RB unit been installed Vibration noise RB unit may correctly drop Has there been a check for gas leaks refrigerant pipes No cooling No heating Has heat insulation work been completed Water leakage Is the voltage of the power source the same as that indicated on the label on the RB unit No operation heat or burn damage Is the address setting correctly No operation configured Are the wires and pipes all No operation heat or burn connected completely damage Is the RB unit earthed grounded
11. Short circuit Is the connection cable the specified thickness No operation heat or burn damage 12 INDICATOR LAMP Power Error indicator indicator lamp lamp Status contents Green Red Lit Lit when the power is turned on The wiring is incorrect The IN U terminal of RB unit and outdoor unit transmission terminal are Lit connected with the transmission cable Correctly connect the wiring When re wiring you must turn off the power e There is a fault with the communication board or Lit Flashing the main board e 0 15 ON 0 1s OFF En 12
12. To outdoor unit other RB unit Setting Type of switch Setting range Manual address setting Setting a a S ao p Le Transmission calbe example Ap a RB unit address 2 96 9g 0 to 63 To indoor unit RB AD x 10 RBAD x 1 cooling heating C q 0 To outdoor unit other RB unit indoor unit Cooling only N NI eX LX E Automatic address setting Set this switch to 00 at factory setting E Manual address setting 0 0 Song oH vae example JE w z w Refrigerant 63 96 96 0 to 99 circuit address REF AD x10 REFADx1 au 1NO eX 1X E Automatic address setting Set this switch to 00 at factory setting For details of automatic address setting please refer to the outdoor unit installation manual 8 3 Function setting Fix the conduit with the supporters as shown below Conduit Power supply cable Set the DIP switch SET2 referring to the table Supporter 1 Operation mode selecting switch SET 2 p RB unit a Operation mode Remarks E t 1 2 OFF OFF Priority given to the first command Factory setting 30 in 54 in 54 in 54 in ON OFF Priority given to external input of RB 756 mm 1 361 mm 1 361 mm 1 361 mm unit or less or less or less or less iortv di ini i OFF ON Priority given to admin
13. Unit in mm 8 to 10 mm Hexagonal nuts Washers field supply accessories Hanger accessories 5 7 3 Fix the unit When hanging on the wall Use the tapping screw B accessories to set up this unit 6 PIPE INSTALLATION 6 1 Pipe selection Select the pipe to connect to the RB unit Connection example 1 Liquid pipe Discharge gas pipe Outdoor unit Gas pipe Suction gas pipe Select the connection pipe from Table 2 below based on the capacity of the indoor unit connected downstream Connection example 2 Liquid pipe Discharge Outdoor ASIRIP unit RB Suction gas pipe unit Select the connection pipe from Table 3 below based on the total capacity of the indoor unit connected downstream Gas pipe Indoor unit If the size of the selected pipe is different from the RB unit pipe size use reducers accessories to make the diameters match Discharge memm m gas pipe RB unit Gas pipe Suction baa gas pipe Reducer Reducer Install the liquid pipe after referring to the outdoor unit installation manual for its diameter 1 UTP RU01AH Table 1 RB unit pipe size Suction gas pipe Discharge gas pipe Gas pipe in mm fin mm in mm 1 2 12 7 3 8 9 52 1 2 12 7 Table 2 Connection pipe selection for when only 1 indoor unit is connected Indoor unit capacity Suction gas pipe Btu h in
14. dripping and water damage to walls and floors In an Area with High Winds Securely anchor the outdoor unit down with bolts and a metal frame Provide a suitable air baffle In a Snowy Area for Heat Pump type Systems Install the outdoor unit on a raised platform that is higher than drifting snow When Connecting Refrigerant Tubing Keep all tubing runs as short as possible Use the flare method for connecting tubing Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them then tighten the nut with a torque wrench for a leak free connection Check carefully for leaks before opening the refrigerant valves When Servicing Turn the power OFF at the main circuit breaker panel before opening the unit to check or repair electrical parts and wiring Keep your fingers and clothing away from any moving parts Clean up the site after you finish remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced After installation explain correct operation to the customer using the operating manual A DANGER Never touch electrical components immediately after the power supply has been turned off Electrical shock may occur After turning off the power always wait 5 minutes or more before touching electrical components Be sure to read this Manual thoroughly before installation The warnings and precautions indi
15. group 1 RB group 2 GOOD PROHIBITED If using the indoor unit as a dedicated room cooling device connect the transmission terminal of the indoor unit to the OUT RB terminal of RB unit or outdoor unit transmission terminal Transmission line Transmission line BUT romeo i efrigerant pipe RB group EL RB group GOOD PROHIBITED En 9 Breaker2 Breaker1 11L2 N Power supply 208 230V 19 60Hz l Crossover wiring of power supply RB unit RB unit Power supply L1 L2 N x Pull box M Disconnect switch RB unit N RB unit Power supply L1 L2 N i DS Disconnect switch shall be installed between RB unit and pull box 7 3 4 Work procedure 8 FIELD SETTING 1 Remove the control box cover 2 Connect the transmission cable to the transmission cable terminal 3 Firmly attach the transmission cables using the accessory cable tie in 2 places 4 Attach the conduit connector on the wiring connecting port 5 Connect the power supply cable to the power supply cable terminal 6 Fill the cable holes with putty in order to prevent small animals from entering 7 Install the Control box cover A CAUTION Use an insulated screwdriver to set the dip switches 8 1 PC board layout B
16. 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 pressure in the refrigeration cycle that leads to breakage and even injury 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 breakage injury etc Be sure to always use the parts accessories or the specified parts for installation Failure to use the specified parts may cause the equipment to fail water leakage electric shock or fire Install the equipment in a location that is out of reach of children Be sure to check that there are no refrigerant leaks after installation is completed If there is refrigerant gas leak indoors and comes into contact with an open flame from such sources as a fan heater bunsen burner or stove it can generate toxic fumes Do not turn OFF the breaker or the disconnect switch connected to the RB unit dur ing operations except in an emergency Doing so may cause a compressor malfunc tion When turning OFF the RB unit power first stop refrigerant system operations and then turn OFF the breaker or disconnect switch connected to the RB unit CAUTION Read carefully all security information before use or install the air condit
17. L INPUT WIRE A Part No 9368777005 EXTERNAL INPUT WIRE D Part No 9368779016 2 5 About unit of the length All Fujitsu General products are manufactured to metric units and tolerances United States customary units are provided for reference only In cases where exact dimensions and tolerances are required always refer to metric units En 3 Indoor units connected downstream of the RB unit can operate all in the same operat ing mode Indoor units within the same RB group cannot simultaneously operate heat ing and cooling Table 2 Indoor unit model codes and model selection capacity Model code 07 09 12 14 18 Indoor unit capacity 7 500 9 500 12 000 14 000 18 000 Btu h Model code 24 30 36 48 60 Indoor unit capacity 54999 30 000 36 000 48 000 60 000 Btu h For connectable indoor units refer to the catalogue or the Design 8 Technical manual 4 PIPING SPECIFICATIONS For details of piping specifications refer to the outdoor unit installation manual 5 INSTALLATION WORK Selecting an installation location N WARNING Take into consideration whether the place you install the main unit can fully with stand its weight For hanger bolts use embedded inserts or embedded foundation bolts in the case of new installation and use a hole in anchor if already installed and attach in a way so that the unit s weight can be supported
18. _AAIRSTAGE INSTALLATION MANUAL RB UNIT For authorized service personnel only MANUEL D INSTALLATION UNIT DE D RIVATION DE R FRIG RANT Pour le personnel agr uniquement MANUAL DE INSTALACI N UNIDAD DE DERIVACI N DE REFRIGERANTE Unicamente para personal de servicio autorizado UTP RU01AH UTP RU01BH UTP RU01CH FUJITSU GENERAL LIMITED PART NO 9366249030 03 En INSTALLATION MANUAL PART NO 9366249030 03 VRF system RB unit CONTENTS 1 SAFETY PRECAUTIONS 1 1 IMPORTANT Please read before starting 1 2 SPECIAL PRECAUTIONS 2 ABOUT THIS PRODUCT 2 1 Precautions for using R410A refrigerant 2 2 Special tools for R410A 2 3 Accessories 2 4 Optional parts 2 5 About unit of the length 3 PRODUCT SELECTION PIPING SPECIFICATIONS 5 INSTALLATION WORK 5 1 Selecting an installation location 5 2 Installation dimensions 5 3 Hanger bolt installation 5 4 Hanging metal fixtures 5 5 Installing the hanger 5 6 Changing the positioning of the control box 5 7 Installation of the unit 6 PIPE INSTALLATION 6 1 Pipe selection 6 2 Selecting the pipe material 6 3 Pipe connection 6 4 Installing heat insulation 7 ELECTRICAL WIRING 7 1 Safety precautions for electrical wiring 7 2 Electrical requirement 7 3 Wiring 8 FIELD SETTING 8 1 PC board layout 8 2 Address setting 8 3 Function setting EXTERNAL INPUT 10 TEST RUN nas 10 1 Test run using Outdoo
19. an the R22 failure to use dedicated piping material or improper installation can cause rupture or injury Furthermore it can cause serious accidents such as water leakage electric shock or fire Tool name Contents of change Pressure is huge and cannot be measured with a conventional R22 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 30in Hg to 768 psi 0 1 to 5 3 MPa and a low pressure display range 30in Hg to 551 psi 0 1 to 3 8 MPa Gauge manifold To increase pressure resistance the hose material and base Charging hose size were changed A conventional R22 vacuum pump can be used by installing a vacuum pump adapter Be sure that the pump oil does not back flow into the system Use one capable for vacuum suction of 5 Torr 755 mm Hg 100 7 kPa Vacuum pump Gas leakage detector 2 3 Accessories Do not discard the accessories required for installation until the installation work is complete Special gas leakage detector for HFC refrigerant R410A Name and shape Q ty Application Installation Manual This manual For suspending the RB unit from ceiling Washer For suspending the RB unit from ceiling En 2 For suspending the RB unit from ceiling Tapping screw A 4x10 Tapping screw B For suspending the RB unit from
20. cated 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 N WARNING Never touch electrical components immediately after the power supply has been turned off Electrical shock may occur After turning off the power always wait 10 minutes or more before touching electrical components Request your dealer or a professional installer to install this unit in accordance with this Installation Manual An improperly installed unit can cause serious accidents such as water leakage electric shock or fire If this unit is installed in disregard of the instructions in the Installation Manual it will void the manufacturer s warranty Do not turn ON the power until all work has been completed Turning ON the power before the work is completed can cause serious accidents such as electric shock or fire 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 must be performed in accordance with the requirement of NEC National Electrical Code and CEC Canadian Electrical Code by authorized personnel only During installation make sure that the refrigerant pipe is attached firmly before you run the compressor Do
21. cessory Thereafter put the cable in the cable clamp 11 8 Fix the control box position 8 4 screws 8 9 Attach Cover B to Cover A H o Control box 1 screw 8 cover 10 Attach Cover A 2 i 4 screws 11 Attach the control box cover 2 screws Control box Le e i y iz 6 IR ST f 10 K ZAR gt ACA pat Sc TES r 2 Cable clamp E q e 10 Accessory e 9 Cover A foi Cover B 5 7 Installation of the unit N WARNING Perform installation in a location which can properly withstand the weight of the unit Failure to install in a faulty installment may cause the equipment to fail water leak age electric shock or fire During installation secure the hanger bolt so it does not come off Z CAUTION Be sure to provide adequate maintenance space when installing the unit above the ceiling Refer to the installation restrictions contained in 5 2 Installation dimensions 5 7 1 Removing the pinch pipe Melt the brazing filter metal on connecting part using a torch and remove the pinch pipe Pinch pipe Pinch pipe 5 7 2 Fix the unit When hanging from the ceiling 1 Attach the hanger accessories to the hanger bolts as shown in the overview diagram below in 3 places 2 After checking that the equipment is horizontal firmly fixed in place with the nuts field supply and washers accessories Hanger bolt
22. e pipe with a radius of ends of the wiring can cause a malfunction electric shock or fire curvature of 3 15 16 in 100 mm or over Always fasten the outside covering of the connection cable with the cable clamp If If the pipe is bent repeatedly at the same place it will break the insulator is chafed electric discharge may occur We suggest installing GFEB breakers or follow local electrical code When installing 6 3 3 Pipe connection this system install using ground fault equipment breakers GFEB to reduce the risk of leaking current which result in electric shock or potential fire The pil b ted by brazi A CONS O Always connect the earth ground cable Brazing Improper earthing grounding work can cause electric shocks Liquid pipe ces Perform wiring work in accordance with standards so that the air conditioner can be operated safely and positively If the supply cable is damaged it must be replaced by the manufacturer its service Suction agent or similarly qualified persons in order to avoid a hazard gas pipe RB Discharge me mm Unit CAUTION as pipe oe Earth Ground the unit Do not connect the earth ground cable to a gas pipe water pipe lightning rod or a telephone earth ground cable Brazing Improper earthing grounding may cause electric shock 6 4 Installing heat insulation Do not connect power supply cables to the transmission terminals as this will
23. ectrical box cover can cause serious accidents such as In addition if the flux contains fluoride it will affect the refrigerant piping system due electric shock or fire through exposure to dust or water to deterioration of refrigerant oil Use the included connection cables and power cables or ones specified by the manufacturer Improper connections insufficient insulation or exceeding the allowable current can cause electric shock or fire For brazing material use phosphor copper that does not require flux Do not modify the power cables use extension cables or use any branches in the wiring Improper connections insufficient insulation or exceeding the allowable 6 3 2 Bending pipes The pipes are shaped by your hands Be careful not to collapse them Do not bend the current can cause electric shock or fire pipes in an angle more than 90 When pipes are repeatedly bent or stretched the material will harden making it difficult Match the terminal block numbers and connection cable colors with those of the to bend or stretch them any more Do not bend or stretch the pipes more than 3 times indoor unit or outdoor unit Erroneous wiring may cause burning of the electric parts A CAUTION Securely connect the connection cables to the terminal board In addition secure the cables with wiring holders Improper connections either in the wiring or at the To prevent breaking of the pipe avoid sharp bends Bend th
24. efore turning ON the power supply set the switches The switch settings will be disabled after the power supply has been turned ON PC board Power indicator Rotary switch lamp Green 907 r w DIP switch SET1 Conduit connector ta Power supply terminal DIP switch j Lock nut SET2 SEE qua CNAO2 DIP switch SET2 Em Rotary switch 8 2 Address setting 1 RB unitaddress When connecting multiple RB units to 1 refrigerant system set the address at RB AD SW Rotary switch RB AD x 1 Factory setting 0 Rotary switch RB AD x 10 Factory setting 0 Error indicator 95 al lamp Red DIP switch SET1 setting disabled External Input connector E 1 CNAO1 H 3 2 Wiring connecting port 4 Conduit connector L1 L2 N Power supply cable Earth Ground Refrigerant circuit address In the case of multiple refrigerant systems set REF AD SW for each refrigerant system Set to the same refrigerant circuit address as the outdoor unit Rotary switch REF AD x 1 Factory setting 0 Rotary switch REF AD x 10 Factory setting 0 To indoor unit E E 4 2 Transmission cable
25. ficiently careful when wiring connected unit When connected to Dry contact terminals of multiple RB units with a connected unit insulate each RB unit with relay etc as shown on below example RB unit PC board RB unit Input device Power supply for relay K1 K2 Relay Device for DC current NOTE When connected to multiple RB units directly it will cause breakdown O Apply voltage terminal CNA02 When a power supply must be provided at the input device you want to connect use the Apply voltage terminal CNA02 DC power sup 4 Y i I Dl ii bk peeseces ply 12 24V PC board pol Load Si resistance i 13 lunmmmmand 10 I 5 1 El i 1 Lee e mom E 1 1 I connected unit 1 Make the power supply DC12 to 24V Select a power supply capacity with an ample surplus for the connected load Do not impress a voltage exceeding 24V across pins 1 3 c The allowable current is DC 5mA to 10mA Recommended DC5mA Provide a load resistance such that the current becomes DC10mA or less Select very low current use contacts usable at DC12V DC1mA or less d The polarity is for pin 1 and for pin 3 Connect correctly When connected to Apply voltage terminals of multiple RB units with a connected unit be sure to make a branch outside the RB unit using a pull box etc as shown on below example En 11 1 DC power supply 12
26. ioner Do not attempt to install the air conditioner or a part of the air conditioner by yourself This unit must be installed by qualified personnel with a capacity certificate for han dling 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 Always use a separate power supply line protected by a circuit breaker operating on all wires with a distance between contact of 1 8 in 3 mm 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 Do not turn on the power until all installation work is complete This unit contains no user serviceable parts Always consult authorized service per sonnel to repairs When moving consult authorized service personnel for disconnection and installation of the unit Children should be monitored to ensure they do not play with the device This product is not intended to be used by people including children with physical sensory or mental disability or pe
27. istrative indoor unit ON ON Setting forbidden 2 Cool heat selection control time SET 2 3 A Cool heat selection control time Remarks OFF OFF 6 min Factory setting ON OFF 3 min OFF ON Setting forbidden ON ON Setting forbidden If the cool heat selection control time is short the sound of passing refrigerant may be loud during the cool heat selection control process Settings other than those in specified positions are not to be changed En 10 9 EXTERNAL INPUT RB unit can be switched cooling priority and heating priority by using RB unit PC board CNAO1 or CNAO2 The external input priority mode must be set by changing DIP switch SET2 1 2 on PC board of RB unit A twisted pair cable 22AWG should be used Maximum length of cable is 492 ft 150 m Use an external input cable with appropriate external dimension depending on the number of cables to be installed The wire connection should be separate from the power cable line E INPUT SELECT Use either one of these types of terminal according to the application Both types of terminals cannot be used simultaneously O Dry contact terminal CNA01 When a power supply is unnecessary at the input device you want to connect use the Dry contact terminal CNA01 PC Board a Select very low current use contacts usable at DC12V DC1mA or less b The wiring is different from Apply voltage terminals Be suf
28. ll RB units Outdoor unit Transmission X41 X2 E 21 22 H1 H2 IH Refrigerant piping Breaker 1 Ground Fault Equipment Breaker GFEB Breaker 2 Maximum Circuit Breaker MAX CKT BKR x1 x2 OUT RB Refrigerant piping Power RB unit Power RB unit supply IN U supply IN U L1 L2 L1IL2 L 4 No X1 X2 NO X1 X2 E V 1 np Breaker2 Breaker2 ii pt i if pa Bebo Breaker1 El Breaker1 Ka ISA I AS Cu T 4 11112 x1 LTIL2 X1 X2 2 X1 X2 X1 X2 X1 X2 N a N se as e ee Transmission Transmission Transmission ransmission Transmission Power supply Power supply 208 230V 19 a 208 230V 19 A A A 60Hz Indoor unit 60Hz Indoor unit Indoor unit Indoor unit Indoor unit Cooling only The transmission cable connects indoor units belonging to the same RB group The transmission cable cannot be used to connect indoor units belonging to different RB groups Transmission line Transmission line pm Refrigerant pipe a Saa A e es st RP Re aaa do e dae J RB group 1 RB group 2 RB
29. mm Discharge gas pipe in mm Gas pipe lin mm 7 500 9 500 12 000 14 000 TEA 3 8 9 52 1 2 12 7 5 8 15 88 Reducer 1 2 12 7 Reducer 5 8 15 88 18 000 24 000 Reducer Table 3 Connection pipe selection for when 2 to 3 indoor units are connected Total capacity of indoor unit Btu h Suction gas pipe lin mm Discharge gas pipe in mm Gas pipe lin mm 5 8 15 88 Reducer 1 2 12 7 Reducer 5 8 15 88 Reducer 15 000 lt x lt 27 000 2 UTP RUO1BH Table 1 RB unit pipe size Suction gas pipe Discharge gas pipe Gas pipe in mm in mm in mm 3 4 19 05 1 2 12 7 3 4 19 05 Table 2 Connection pipe selection for when only 1 indoor unit is connected Gas pipe fin mm 1 2 12 7 Reducer Indoor unit capacity Suction gas pipe Btu h in mm Discharge gas pipe in mm 3 8 9 52 Reducer 7 500 9 500 12 000 14 000 1 2 12 7 Reducer 18 000 24 000 30 000 5 8 15 88 Reducer 5 8 15 88 1 2 12 7 Reducer 36 000 48 000 3 4 19 05 1 2 12 7 3 4 19 05 5 8 15 88 80 000 Reducer 3 4 19 05 3 4 19 05 Table 3 Connection pipe selection for when 2 to 8 indoor units are connected Total capacity of indoor unit Btu h Suction gas pipe fin mm Discharge gas pipe in mm Gas pipe lin mm 5 8 15 88 Reducer 5 8 15 88 lt 15 000 lt
30. n cycle will become abnormally high and prevent the unit from exerting its full performance N WARNING Apply niti hile brazing the pipes i PP y Mogens re ee Pipes Pressure regulating valve Electrical work must be performed in accordance with this Manual by a person Nitrogen gas pressure 2 9 psi 0 02 MPa C ia i A y Ea an ap certified under the national or regional regulations Be sure to use a dedicated circuit sufficient pressure to be felt on the back for the unit of your hand or more J An insufficient power supply circuit or improperly performed electrical work can cause serious accidents such as electric shock or fire Nitrogen gas 7 gt A A Fa Before starting work check that power is not being supplied to the RB unit indoor Brazing area unit and outdoor unit For wiring use the prescribed type of cables connect them securely making sure If a pipe is brazed without applying nitrogen gas it will create an oxidation film that there are no external forces of the cables applied to the terminal connections This can degrade performance or damage the parts in the unit such as the Improperly connected or secured cables can cause serious accidents such as compressor or valves overheating the terminals electric shock or fire Do not use flux to braze pipes If the flux is the chlorine type it will cause the pipes Securely install the electrical box cover on the unit to corrode An improperly installed el
31. r unit PC board 10 2 Test run using Remote Controller 11 CHECK Teconninaiins 12 INDICATOR LAMP STATUS gt NN NN HO 1 1 PR BR PR BR amp W W W amp w amp w ND D ND ND a AFETY PRECAUTIO IMPORTANT Please read before st This air conditioning system meets strict safety and operating standards As the installer or service person it is an important part of your job to install or service the system so it operates safely and efficiently For safe installation and trouble free operation you must Carefully read this instruction booklet before beginning Follow each installation or repair step exactly as shown Observe all local state and national electrical codes Pay close attention to all danger warning and caution notices given in this manual WAN INN TER This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death CAUTION This symbol refers to a hazard or unsafe practice which can result in personal injury and the potential for product or property damage Hazard alerting symbols If Necessary Get Help These instructions are all you need for most installation sites and maintenance condi tions If you require help for a special problem contact our sales service outlet or your certified dealer for additional instructions Electrical Safety alert
32. rsons lacking experience or knowledge unless they have been given by the through a person responsible for their safety supervision or instruction concerning the use of the device It is not necessary to provide drainage for this unit This equipment is for indoor use only 2 ABOUT THIS PRODUCT 2 1 Precautions for using R refrigerant Z WARNING 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 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 Do not touch refrigerant that has leaked from the refrigerant pipe connections or other area Touching the refrigerant directly can cause frostbite If a refrigerant leakage occurs during operation immediately vacate the premises and thoroughly ventilate the area If the refrigerant comes in contact with a flame it produces a toxic gas 2 2 Special tools for R41 Z WARNING To install a unit that uses the R410A refrigerant use dedicated tools and piping materials that have been manufactured specifically for R410A use Because the pressure of the R410A refrigerant is approximately 1 6 times higher th
33. rt you could still receive noise under some signal conditions If children under 10 years old may approach the unit take preventive measures so that they cannot reach the unit Select the place to install the product after taking into consideration the following condi tions and after obtaining approval from the customer Install this unit in a location that has strong support and no vibrations Install in a location that has enough space for this unit installation Install in a well ventilated area Install in a location that is not exposed to high temperatures or humidity over a long periods Do not install the unit near a bedroom Refrigerant noise may be heard from the piping 5 2 Installation dimensions The RB unit can be installed onto the wall or hanging from the ceiling Provide a service access for maintenance and inspection purposes as shown in the figure below Be sure to prepare service access in control box side Itis not necessary to provide drainage for this unit Install the RB unit without slant within 2 Use M8 or M10 for the hanger bolt size when hanging UPWARD Gas pipe Discharge gas pipe Suction gas pipe 5 2 1 Ceiling hanging Be sure to install so that the top side faces up Unit in mm o e O a k e UTP RUO1AH 15 7 E UTP RUO1BH 17 7 5 E UTP RUO1CH 18 8 172
34. s and indoor units 30 mA 0 1 sec or less 36 or less 100 mA 0 1 sec or less 37 to 90 If the total number of units connected to the breaker exceeds 36 either add a 30mA breaker or use breakers with a greater capacity 7 2 1 Cable specifications Follow the specifications below for the power supply and transmission cable Recommended cable size mm Cable type Remark 22 AWG LEVEL 4 NEMA Transmission 22 AWG LONWORKS non polar 2 core twisted cable 0 33 mm compatible cable pair solid core diameter 0 026 in 0 65 mm 7 3 Wiring Before attaching the cable to terminal block 7 3 1 Power supply cable Conduit connector 4 15 16 in 125 mm E Earth ground wire 4 5 16 in 110 mm A For solid core wiring 1 To connect the electrical terminal follow the below diagram and connect after looping it around the end of the cable 2 Use the specified cables connect them securely and fasten them so that there is no stress placed on the terminals 3 Use an appropriate screwdriver to tighten the terminal screws Do not use a screwdriver that is too small otherwise the screw heads may be damaged and prevent the screws from being properly tightened 4 Do not tighten the terminal screws too much otherwise the screws may break 5 See the table for the terminal screw tightening torques 6 Please do not fix 2 power supply cables with 1 screw
35. terminal SI Ring terminal z zA Terminal block Cable Z WARNING Use ring terminals and tighten the terminal screws to the specified torques otherwise abnormal overheating may be produced and possibly cause heavy damage inside the unit Tightening torque 11 to 16 Ibf in 1 2 to 1 8 N m M4 screw Power supply L1 L2 N GND 7 3 2 Transmission cable 1 3 16 in 30 mm no film Shielded wire Jine in 40 mm When the 2 cables are attached GOOD PROHIBITED Different diameter Connect to 1 side Z WARNING Tighten the terminal screws to the specified torques otherwise abnormal overheating may be produced and possibly cause heavy damage inside the unit Tightening torque 4 to 5 Ibfiin 0 5 to 0 6 N m M3 screw Transmission X1 X2 Z CAUTION To peel the film from the lead cable use a dedicated tool that will not damage the conductor cable When installing a screw on the terminal block do not cut the cable by overtightening the screw On the other hand an under tightened screw can cause faulty contact which will lead to a communication failure En 8 7 3 3 Wiring method The wiring example for RB units outdoor units and indoor units is shown in the figure Breaker shall be located in sight from and readily accessible from a
36. using R410A incurs pressure higher than when using conventional refrigerant R22 it is necessary to choose adequate materials Thicknesses of copper pipes used with R410A are as shown in the table Never use copper pipes thinner than that in the table even when it is available on the market En 6 Thicknesses of Annealed Copper Pipes R410A 6 4 1 Piping insulation Pipe outside diameter Thickness E 1 After the sealing test is complete carry out insulation work in mm in mm 1 Material 2 Insulate all pipes and piping connection parts so that there is no gap in it 1 4 6 35 0 032 0 80 3 Firmly connect the terminal part a so that no air comes in or out 3 8 9 52 0 032 0 80 COPPER JIS H3300 4 Do not squeeze the cable ties excessively so as to ensure that the insulation i material is thick 1 2 12 7 0 032 0 80 lowah tena 5 8 15 88 0 039 1 00 stress 2 33 N mm a Insulation field supply 3 4 19 05 0 047 1 20 COPPER JIS H3300 C1220T H or equivalent 7 8 22 22 0 039 1 00 Allowable tensile stress gt 61 N mm 1 Endurance pressure of the pipes 609 psi 4 2 MPa Cable tie field supply 6 3 Pipe connection 6 3 1 Brazing 7 ELECTRICAL WIRING N CAUTION If air or different type of refrigerant enters the refrigeration cycle the internal 7 1 Safety precautions for electrical wiring pressure in the refrigeratio
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