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Piping installation

Installer and user reference guide

LRYELRNUN5A7Y1

CO₂ Conveni-Pack outdoor unit

4P605460-1 – 2020.08

Typical workflow

Connecting the refrigerant piping involves:

▪

Connecting refrigerant T-joints

▪

Connecting the refrigerant piping to the indoor units (see the installation manual
of the indoor units)

▪

Insulating the refrigerant piping

▪

Keeping in mind the guidelines for:

Pipe connections

Flaring pipe ends

Brazing

Using the stop valves

16.3.2 Precautions when connecting the refrigerant piping

INFORMATION

Also read the precautions and requirements in the following chapters:

▪

General safety precautions

▪

Preparation

DANGER: RISK OF BURNING/SCALDING

CAUTION

NEVER bend high pressure piping! Bending can reduce the pipe thickness and thus
weaken the piping. ALWAYS use K65 fittings.

NOTICE

Take adequate measures to prevent misuse of the piping. Some examples of misuse
of the piping: climbing on the piping, using the piping as storage, hanging tools on
the piping.

Summary of Contents for LRYEN10A7Y1

Page 1: ...Installer and user reference guide CO Conveni Pack outdoor unit LRYEN10A7Y1 LRNUN5A7Y1...

Page 2: ...Maintenance and service 29 9 1 Maintenance before a long stop period 29 9 2 Maintenance after a long stop period 30 9 3 About the refrigerant 30 9 4 Recommended maintenance and inspection 30 10 Troub...

Page 3: ...e 72 16 2 4 To handle the service port 74 16 2 5 Tightening torques 75 16 3 Connecting the refrigerant piping 75 16 3 1 About connecting the refrigerant piping 75 16 3 2 Precautions when connecting th...

Page 4: ...114 21 5 To perform a test run 7 segment display 114 21 5 1 Test run checks 115 21 5 2 Correcting after abnormal completion of the test run 118 21 6 Operating the unit 118 21 7 Logbook 118 22 Hand ove...

Page 5: ...on manual of the outdoor unit Installation and operation instructions Format Paper in the box of the outdoor unit Installer and user reference guide of the outdoor unit Preparation of the installation...

Page 6: ...1 Meaning of warnings and symbols DANGER Indicates a situation that results in death or serious injury DANGER RISK OF ELECTROCUTION Indicates a situation that could result in electrocution DANGER RIS...

Page 7: ...contact your dealer DANGER RISK OF BURNING SCALDING Do NOT touch the refrigerant piping water piping or internal parts during and immediately after operation It could be too hot or too cold Give it t...

Page 8: ...e and address of fire department police and hospital Name address and day and night telephone numbers for obtaining service In Europe EN378 provides the necessary guidance for this logbook 2 2 2 Insta...

Page 9: ...liary devices approved by the manufacturer are used in the duct work air inlet AND outlet are connected directly to the same room by ducting Do NOT use spaces such as a false ceiling as a duct for the...

Page 10: ...perform a gas leak detection NOTICE To avoid compressor breakdown do NOT charge more than the specified amount of refrigerant When the refrigerant system is to be opened refrigerant MUST be treated ac...

Page 11: ...the terminals see the wiring diagram Do NOT touch electrical components with wet hands Do NOT leave the unit unattended when the service cover is removed WARNING If NOT factory installed a main switc...

Page 12: ...ing wiring which is the same thickness do as shown in the figure above For wiring use the designated power wire and connect firmly then secure to prevent outside pressure being exerted on the terminal...

Page 13: ...lified persons only In Europe and areas where IEC standards apply EN IEC 60335 2 40 is the applicable standard Installation site see 15 1 Preparing the installation site 450 CAUTION Appliance not acce...

Page 14: ...he unit in a correct way can be found in 15 Unit installation 450 Refrigerant piping installation see 16 Piping installation 464 NOTICE During brazing or welding refrigerant shall be removed from part...

Page 15: ...ion NOTICE Piping shall be suitably supported according to its size and service weight For more information see European Standard EN 378 INFORMATION To complete the refrigerating system additional cha...

Page 16: ...etween the contact point gaps that provide full disconnection under overvoltage category III WARNING If the supply cord is damaged it MUST be replaced by the manufacturer its service agent or similarl...

Page 17: ...For the user Installer and user reference guide 17 LRYEN10A7Y1 LRNUN5A7Y1 CO Conveni Pack outdoor unit 4P605460 1 2020 08 For the user For the user...

Page 18: ...mental capabilities or lack of experience and knowledge can only use this appliance if they have been given supervision or instruction concerning the use of the appliance by a person responsible for...

Page 19: ...mical symbol is printed beneath the symbol this chemical symbol means that the battery contains a heavy metal above a certain concentration Possible chemical symbols are Pb lead 0 004 Waste batteries...

Page 20: ...ler CAUTION It is unhealthy to expose your body to the air flow for a long time CAUTION To avoid oxygen deficiency ventilate the room sufficiently if equipment with burner is used together with the sy...

Page 21: ...he main switch before executing any maintenance task WARNING NEVER replace a fuse with a fuse of a wrong ampere ratings or other wires when a fuse blows out Use of wire or copper wire may cause the un...

Page 22: ...a CO2 detector according to the specifications of standard EN378 If the refrigerant leaks in high concentrations in the room it may have negative effects on its occupants such as asphyxiation and car...

Page 23: ...ric shock or fire Contact your dealer NOTICE Do NOT use the system for other purposes In order to avoid any quality deterioration do NOT use the unit for cooling precision instruments or works of art...

Page 24: ...e e d c f h i j k h l i j k l g a Main outdoor unit LRYEN10 b Capacity up unit LRNUN5 c Communication box BRR9B1V1 d Indoor unit for air conditioning e Indoor unit for refrigeration showcase f Indoor...

Page 25: ...ause an explosion or a fire CAUTION It is unhealthy to expose your body to the air flow for a long time CAUTION To avoid oxygen deficiency ventilate the room sufficiently if equipment with burner is u...

Page 26: ...nd user reference guide 26 LRYEN10A7Y1 LRNUN5A7Y1 CO Conveni Pack outdoor unit 4P605460 1 2020 08 Dedicated functions exist depending on the type of indoor unit refer to dedicated installation operati...

Page 27: ...rature ranges for safe and effective operation Refrigeration A C cooling A C heating Outdoor temperature 20 43 C DB a 5 43 C DB 20 16 C WB Indoor temperature 14 24 C WB 15 27 C DB a For low load restr...

Page 28: ...m entering a room during cooling operation by using curtains or blinds Ventilate often Extended use requires special attention to ventilation Keep doors and windows closed If the doors and windows rem...

Page 29: ...ury NOTICE Do NOT wipe the controller operation panel with benzine thinner chemical dust cloth etc The panel may get discoloured or the coating peeled off If it is heavily dirty soak a cloth in water...

Page 30: ...le parts Be aware that the refrigerant inside the system is odourless WARNING The R744 refrigerant CO2 inside the unit is odourless non flammable and normally does NOT leak If the unit is installed in...

Page 31: ...and user reference guide 31 LRYEN10A7Y1 LRNUN5A7Y1 CO Conveni Pack outdoor unit 4P605460 1 2020 08 The manufacturing number stated on the nameplate of the unit The installation date The symptoms or ma...

Page 32: ...p the operation The operation switch does NOT work well Turn OFF the power supply The user interface display indicates the unit number the operation lamp flashes and the malfunction code appears Notif...

Page 33: ...y obstacles Remove any obstacles and make sure the air can flow freely Check if the indoor unit is not frosted up Defrost the unit manually or shorten the defrost operation cycle Check if there are no...

Page 34: ...The stop valve of an outdoor unit is left closed Open the stop valve on both the gas and liquid side The air passage is blocked Remove obstacles that block the passage of air to the outdoor unit Lost...

Page 35: ...r and user reference guide 35 LRYEN10A7Y1 LRNUN5A7Y1 CO Conveni Pack outdoor unit 4P605460 1 2020 08 11 Relocation Contact your dealer for removing and reinstalling the total unit Moving units require...

Page 36: ...r unit 4P605460 1 2020 08 12 Disposal NOTICE Do NOT try to dismantle the system yourself dismantling of the system treatment of the refrigerant oil and other parts MUST comply with applicable legislat...

Page 37: ...For the installer Installer and user reference guide 37 LRYEN10A7Y1 LRNUN5A7Y1 CO Conveni Pack outdoor unit 4P605460 1 2020 08 For the installer For the installer...

Page 38: ...acked unit as close as possible to its final installation position to prevent damage during transport When handling the unit take into account the following Fragile handle the unit with care Keep the...

Page 39: ...them Possible risk suffocation 13 2 2 To handle the outdoor unit CAUTION To avoid injury do NOT touch the air inlet or aluminium fins of the unit Crane Lift the outdoor unit preferably with a crane a...

Page 40: ...to the unit Damage to the painting of the unit decreases the anti corrosion protection Also see the label about handling on the unit 13 2 3 To remove the accessories from the outdoor unit Outdoor uni...

Page 41: ...4 5 Indoor unit constraints 48 14 5 1 Constraints for air conditioning 48 14 5 2 Constraints for refrigeration 49 14 1 Identification NOTICE When installing or servicing several units at the same time...

Page 42: ...to air heating cooling and refrigeration applications NOTICE These units LRYEN10 and LRNUN5 are only parts of an air conditioner system complying with partial unit requirements of the International S...

Page 43: ...bar g If refrigerant temperature is higher than 31 C there is a possibility that the safety valve will open during service or power shutdown Text on warning label Translation Unit is charged and unde...

Page 44: ...er high pressure Unit is charged and under high pressure Also see 16 2 Using stop valves and service ports 471 Label about maximum storage temperature MAXIMUM STORAGE TEMPERATURE 55 C Text on warning...

Page 45: ...sor may burn out Fanmotor connectors X1A X2A X3A X4A X5A X6A 4P623521 1B P1 N1 Label on capacity up unit ELECTRIC SHOCK CAUTION WARNING CAUTION Caution when servicing the switch box Caution when perfo...

Page 46: ...nectors in order to discharge static electricity This to prevent the PCB from being damaged Always touch the earth terminal first before pulling out or plugging in connectors in order to discharge sta...

Page 47: ...ndoor unit for air conditioning e Indoor unit for refrigeration showcase f Indoor unit for refrigeration blower coil g Safety valve h CO2 control panel i CO2 detector j CO2 alarm k CO2 ventilator l Sh...

Page 48: ...bar For more information see the installation manual of the pressure reduction kit 14 5 Indoor unit constraints NOTICE The design pressure of high pressure side of the connected refrigeration parts M...

Page 49: ...in mind when you connect showcases and blower coils Refrigeration total capacity Minimum Maximum Outdoor unit 8 7 kW 60 14 5 kW 100 Outdoor unit capacity up unit 12 6 kW 60 21 0 kW 100 Low load for r...

Page 50: ...ding works where a lot of dust is created the unit MUST be covered Choose an installation location with sufficient space for carrying the unit in and out of the site 15 1 1 Installation site requireme...

Page 51: ...e refrigerant to leak In places where a mineral oil mist spray or vapour may be present in the atmosphere Plastic parts may deteriorate and fall off or cause water leakage It is NOT recommended to ins...

Page 52: ...event of a refrigerant leak See 15 1 3 Additional installation site requirements for CO refrigerant 453 CAUTION Excessive concentrations of refrigerant R744 CO2 in a closed room can lead to unconsciou...

Page 53: ...t an installation site where the snow will NOT affect the unit If lateral snowfall is possible make sure that the heat exchanger coil is NOT affected by the snow If necessary install a snow cover or s...

Page 54: ...mit Room volume or Appropriate measures 455 No charge restriction The charge shall be assessed according to location I II or III depending on the location of the ventilated enclosure Supervised Upper...

Page 55: ...ith the requirements of class II Class II Compressors in machinery room or open air If all compressors and pressure vessels are either located in a machinery room or in the open air the requirements f...

Page 56: ...om height is 2 5 m calculate the room volume as 250 m2 2 5 m 625 m3 Example Total refrigerant charge in the system is 45 kg and room volume is 300 m3 45 300 0 15 which is QLMV 0 074 and QLAV 0 18 ther...

Page 57: ...om volume of the smallest enclosed occupied space to determine the refrigerant quantity limits Multiple spaces that have appropriate openings which cannot be closed between the individual spaces or ar...

Page 58: ...at least an equivalent level of safety 15 2 Opening and closing the unit 15 2 1 About opening the units At certain times you have to open the unit Example When connecting the electrical wiring When ma...

Page 59: ...ushbuttons on the main PCB located behind the middle front panel need to be accessed To access these pushbuttons the electrical component box cover does not need to be opened See 20 2 2 To access the...

Page 60: ...OTICE When closing the outdoor unit cover make sure that the tightening torque does NOT exceed 4 1 N m 1 Reinstall the small front plates of each removed front panel 1 2 2 1 2 1 a b a If applicable Sm...

Page 61: ...nd requirements in the following chapters 2 General safety precautions 46 15 1 Preparing the installation site 450 15 3 3 To provide the installation structure Make sure the unit is installed level on...

Page 62: ...tdoor unit 4P605460 1 2020 08 Outdoor unit Capacity up unit The preferred installation is on a solid longitudinal foundation steel beam frame or concrete The foundation must be larger than the grey ma...

Page 63: ...are negative the drained water from the outdoor unit will freeze up If the water drainage is not taken care of the area around the unit might be very slippery When installed in a corrosive environmen...

Page 64: ...d 80 16 3 6 Guidelines to connect T joints 81 16 3 7 Guidelines to install a dryer 82 16 3 8 Guidelines to install safety valves 83 16 3 9 Guidelines to install blow off piping 83 16 4 Checking the re...

Page 65: ...d thickness Piping refrigeration unit Piping type Outer diameter Temper grade Thickness t a Liquid piping 12 7 mm 1 2 R420 with heat treatment 0 85 mm t Gas piping 15 9 mm 5 8 R300 drawn 1 05 mm a Dep...

Page 66: ...ide B2 C2 or D2 a b2 c2 or d2 a Refrigeration side 50 m Air conditioning side 30 m Maximum height difference between outdoor unit and indoor unit b Outdoor higher than indoor Example H2 H4 Limit 35 m...

Page 67: ...efrigerant suction piping To install riser piping If the outdoor unit is installed lower than the indoor unit install the riser piping close to the indoor unit When the compressor of the outdoor unit...

Page 68: ...upply The additional refrigerant calculation has to be adjusted as mentioned in the following chapters For outdoor unit without capacity up unit 18 4 To determine additional refrigerant amount 4104 Fo...

Page 69: ...Air conditioner side gas pipe b 15 9 t1 05 K65 a Piping between branching areas C D c d b Piping from first branch to second branch B2 b2 Piping size from branch to indoor unit Piping outer diameter...

Page 70: ...outdoor unit and showcases or blower coils Liquid temperature at outlet of capacity up unit 3 C Liquid pressure at outlet of capacity up unit 6 8 MPaG Refrigerant condition at outlet of capacity up un...

Page 71: ...air conditioner a c d b a Gas side stop valve for refrigeration b Liquid side stop valve for refrigeration c Gas side stop valve for air conditioner d Liquid side stop valve for air conditioner 16 2...

Page 72: ...alves open during operation The gas and liquid stop valves are factory closed The figures below show the name of each part required in handling the stop valve d e a b c a Service port and service port...

Page 73: ...ith 2 spanners 2 Loosen the packing holder by rotating counterclockwise from 1 8 to 1 2 turn 3 Turn the valve stem counterclockwise until it stops 1 2 3 To close the stop valve 1 Turn the valve stem c...

Page 74: ...g the service port cover The figure below shows the name of each part required in handling the stop valve a b c a Service port cap b Copper packing c Valve cap Open versus closed All service ports are...

Page 75: ...As a result refrigerant may leak and the valve cap may break a b a New copper packing b Screw lock agent or silicon sealant only on screw thread 5 Tighten the service port cap Also see 16 2 5 Tighten...

Page 76: ...s for Pipe connections Flaring pipe ends Brazing Using the stop valves 16 3 2 Precautions when connecting the refrigerant piping INFORMATION Also read the precautions and requirements in the following...

Page 77: ...uration of the works Use caution when passing copper tubes through walls see figure below NOTICE Enclose or protect refrigerant piping to avoid damage 16 3 3 To remove the spun pipes WARNING Any gas o...

Page 78: ...5 Wait until all oil has dripped out before continuing with the connection of the field piping in case the recovery was not complete You can now connect the ingoing and outgoing refrigerant piping 16...

Page 79: ...ssing electrical wiring through the knockout holes wrap the wiring with protective tape to prevent damage Front connection 1 Remove the knockout and connect the piping to the outdoor unit A B a b A St...

Page 80: ...anual valve e Pressure reducing valve f Nitrogen Do NOT use anti oxidants when brazing pipe joints Residue can clog pipes and break equipment Do NOT use flux when brazing copper to copper refrigerant...

Page 81: ...ough a b a Direct the flame to the center of the piping to heat the piping equally b If you do not direct the flame to the center of the piping the piping will not be heated equally a a Correct brazin...

Page 82: ...door units c Main refrigerant pipe d Slanting downwards NOTICE Where joints are used on piping avoid damage caused by freezing or vibration 16 3 7 Guidelines to install a dryer NOTICE Do NOT operate t...

Page 83: ...ing according to this design pressure It is NOT possible to connect refrigeration parts with design pressure below 60 bar NOTICE The design pressure of the connected air conditioning parts MUST be 12...

Page 84: ...e vacuum drying procedure below until all moisture has been removed All piping inside the unit has been factory tested for leaks Only field installed refrigerant piping needs to be checked Therefore m...

Page 85: ...s set to the unit 16 4 4 To perform a leak test The leak test must satisfy the specifications of EN378 2 1 Connect to the gas side c and liquid side d of the circuit you want to test See 16 4 3 Checki...

Page 86: ...oap water contains ammonia which may lead to corrosion of parts The system is ready for use if there is no pressure decrease within 24 hours If there is check for and repair leaks 16 4 5 To perform va...

Page 87: ...n withstand a temperature of 120 C for gas piping at the air conditioner side Insulation thickness Take the following into account when determining the insulation thickness Piping Mode Minimum tempera...

Page 88: ...ernational Technical Standard setting the limits for voltage changes voltage fluctuations and flicker in public low voltage supply systems for equipment with rated current 75 A It is the responsibilit...

Page 89: ...A1P X5M X4M X1M PE X1M X3M PE X1M A1P X2M X1M X3M PE k1 k l m k2 k4 k3 j 3N 50 Hz 380 415 V AC c1 c2 3N 50 Hz 380 415 V AC c1 c2 c1 c2 1N 50 Hz 220 240 V AC c1 c2 k5 R1 R1 a Capacity up unit LRNUN5A7...

Page 90: ...wire conduits at that location or install suitable field supplied wire nipples or rubber bushings into the knockout holes a b g d d c f c e e a Outdoor unit b Capacity up unit Knockout holes for c Pip...

Page 91: ...e c b c a a A AA A a Curled single core wire b Screw c Flat washer Stranded conductor wire with round crimp style terminal c b b a c a B B a Terminal b Screw c Flat washer Allowed NOT allowed Tighteni...

Page 92: ...tioned in the table below Make sure that a separate power supply circuit is provided for this unit and that all electrical work is carried out by qualified personnel according to local laws and regula...

Page 93: ...ping Firmly close the lid and arrange the electrical wires so as to prevent the lid or other parts from coming loose Low voltage wiring DIII transmission wiring Remote switches operation low noise Hig...

Page 94: ...n switch is required Use a voltage free contact for microcurrent 1 mA 12 V DC Connect to X5M 1 2 and set to Remote R E M O T E OFF O N S1S S1S Factory equipped operation switch OFF Unit operation turn...

Page 95: ...g 3N 50 Hz 380 415 V L1 L2 L3 L1 L2 L3 N N X1M PE c b a d a d e f g e f X4M g C C1 W1 R P1 P2 X4M X1M PE 1 2 X1M Power supply a Power supply cable b Overcurrent fuse c Earth leakage circuit breaker PE...

Page 96: ...d because the outdoor unit must be able to control the expansion valves during startup to prevent liquid refrigerant from entering the compressor and to prevent opening of the safety valve at the low...

Page 97: ...ote operation switch d Remote low noise switch X1M A1P X3M 1 2 e e Wiring intake knockout hole for low voltage See 17 3 Guidelines when knocking out knockout holes 490 Details DIII transmission wiring...

Page 98: ...operation switch Wiring remote operation switch Wiring Sheathed cable 2 wires Vinyl cords 0 75 1 25 mm Maximum wiring length 130 m Details Remote low noise switch NOTICE Low noise switch If you want t...

Page 99: ...Run X2M PE X1M 1 2 g g Wiring intake knockout hole for high voltage See 17 3 Guidelines when knocking out knockout holes 490 Details Output signals NOTICE Output signals The outdoor unit is provided...

Page 100: ...erence guide 100 LRYEN10A7Y1 LRNUN5A7Y1 CO Conveni Pack outdoor unit 4P605460 1 2020 08 Wiring Sheathed cable 2 wires Vinyl cords 0 75 1 25 mm Maximum wiring length 130 m Details Power supply See 17 5...

Page 101: ...rigerant typically consists of the following stages 1 Determining how much you have to charge additionally 2 Charging additional refrigerant pre charging and or charging The cylinder s internal pressu...

Page 102: ...rchased the unit Do NOT use the unit until a service person confirms that the part from which the refrigerant leaked has been repaired Cylinder types The following cylinder types are used to charge ad...

Page 103: ...open ALWAYS beware of the rotating fan The fan will continue rotating for a while even after the power switch has been turned off WARNING The unit is already filled with a certain amount of R744 Do NO...

Page 104: ...kg 2 Total the amounts of refrigerant for the liquid piping a b c 1 3 Calculate the amount of refrigerant for the indoor units using the Conversion ratio for indoor units refrigeration table in this...

Page 105: ...tioner units f Subtotal d e f 2 Required amount of refrigerant for outdoor unit kg 16 0 3 Subtotal 1 2 3 kg 4 Factory charged amount of refrigerant into outdoor unit kg 6 3 5 Additional amount of refr...

Page 106: ...too low you cannot charge anymore Continue as follows to decrease the pressure in the piping and to be able to continue charging 1 Open the gas stop valves on refrigeration and air conditioner side c...

Page 107: ...esistance over the poles can drop but if it is at least 1 M then the unit will not break down Use a 500 V mega tester when measuring insulation Do NOT use a mega tester for low voltage circuits 1 Meas...

Page 108: ...system is configured as applicable DANGER RISK OF ELECTROCUTION 20 2 Making field settings 20 2 1 About making field settings To configure the outdoor unit and capacity up unit you must give input to...

Page 109: ...For field setting e3 DIP switches 4 After making the field settings reattach the inspection hole covers and the front plate NOTICE Close the cover of the electrical component box before turning ON th...

Page 110: ...ation Mode 1 Mode 2 Setting 8 in mode 2 Value 4 in mode 2 20 2 4 To access mode 1 or 2 After the units are turned ON the display goes to its default situation From there you can access mode 1 and mode...

Page 111: ...uation Switching between modes Use BS1 to switch between the default situation mode 1 and mode 2 B S 1 5 s B S 1 B S 1 B S 1 a b c a Default situation H1P OFF b Mode 1 H1P flashing c Mode 2 H1P ON BS1...

Page 112: ...after abnormal completion of the test run 4 Operating the system 21 2 Precautions when commissioning DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING CAUTION Do NOT perform the test operat...

Page 113: ...spond to the voltage on the nameplate of the unit Earth wiring Be sure that the earth wires have been connected properly and that the earth terminals are tightened Insulation test of the main power ci...

Page 114: ...operation of the complete system NOTICE If a capacity up unit is installed conduct its test run AFTER the test run of the outdoor unit 21 5 To perform a test run 7 segment display To perform a test ru...

Page 115: ...egment display is blinking during the communication test If communication is confirmed the display will be OFF and the compressors and fans start operating If communication is not confirmed an error c...

Page 116: ...e Suction superheat refrigeration 10 K Incorrect selection of expansion valve at refrigeration side Set the correct target super heat SH value of showcase or blower coil Suction temperature refrigerat...

Page 117: ...he indication you want to confirm Suction superheat refrigeration 21 times Suction temperature refrigeration 9 times Subcool 27 times To return to the initial state for example if you pushed a wrong n...

Page 118: ...des related to indoor units 21 6 Operating the unit Once the unit is installed and test operation of outdoor unit and indoor units is finished the operation of the system can start For operating the i...

Page 119: ...police and hospital Name address and day and night telephone numbers for obtaining service Location of the logbook The logbook shall either be kept in the machinery room or the data shall be stored d...

Page 120: ...properly please make sure the following is clear for the user Make sure that the user has the printed documentation and ask him her to keep it for future reference Inform the user that he can find the...

Page 121: ...hazards 121 23 3 To release refrigerant 122 23 1 Overview Maintenance and service This chapter contains information about Preventing electrical hazards when maintaining and servicing the system The re...

Page 122: ...d normal operation will not be performed For details see the wiring diagram labelled on the back of the service cover Also see Label about servicing switch box 444 Pay attention to the fan It is dange...

Page 123: ...vice was activated before resetting it NEVER shunt safety devices or change their values to a value other than the factory default setting If you are unable to find the cause of the problem call your...

Page 124: ...F A9P X1A M2F A10P X1A M3F A11P X1A For LRNUN5 M1F A4P X1A Check connection on PCB or actuator O O Malfunction of electronic expansion valve coil For LRYEN10 Y7E A12P X8A Y4E A12P X9A Y14E A12P X10A Y...

Page 125: ...Malfunction of suction temperature sensor For LRYEN10 R21T A1P X29A R22T A1P X23A R23T A2P X29A For LRNUN5 R2T A1P X29A Check connection on PCB or actuator O O Malfunction of the gas cooler outlet tem...

Page 126: ...voltage dropped Check the power supply Check the wiring size and length of the power supply They must be according to the specifications O O Transmission outdoor unit inverter INV1 FAN1 transmission...

Page 127: ...ioner indoor unit is installed If you have changed the power supply cable or communication cable turn the outdoor unit operation switch OFF but keep power supply ON Then push BS3 on the A1P PCB for mo...

Page 128: ...or unit 4P605460 1 2020 08 25 Disposal NOTICE Do NOT try to dismantle the system yourself dismantling of the system treatment of the refrigerant oil and other parts MUST comply with applicable legisla...

Page 129: ...ing diagram Outdoor unit 132 26 3 Piping diagram Capacity up unit 133 26 4 Wiring diagram Outdoor unit 134 26 1 Service space Outdoor unit Make sure the space around the unit is adequate for servicing...

Page 130: ...B Possible patterns with installation spaces in case of a single outdoor unit C Possible patterns with installation spaces in case of an outdoor unit connected to a capacity up unit h1 H1 actual heig...

Page 131: ...chnical data Installer and user reference guide 131 LRYEN10A7Y1 LRNUN5A7Y1 CO Conveni Pack outdoor unit 4P605460 1 2020 08 INFORMATION Further specifications can be found in the technical engineering...

Page 132: ...V RV M 15 9 C1220T H 15 9 C1220T H 15 9 C1220T H 19 1 C1220T H M M M Pressure sensor Compressor with accumulator HPS Pressure switch Heat exchanger Check valve os Oil separator Stop valve RV Liquid re...

Page 133: ...ng diagram Capacity up unit 15 9 C1220T H 15 9 C1220T H L RV M M HPS os H Pressure sensor Plate heat exchanger HPS Pressure switch Heat exchanger Check valve os Oil separator Service port RV Liquid re...

Page 134: ...act for microcurrent 1 mA 12 V DC For more information about the remote switches see details in 17 6 1 Low voltage wiring Outdoor unit 493 6 Output caution warning run operation is 220 240 V AC with a...

Page 135: ...r compressor INV3 M1F Motor fan FAN1 M2F Motor fan FAN2 M3F Motor fan FAN3 R1T Thermistor air A1P R21T Thermistor M1C suction R22T Thermistor M2C suction R23T Thermistor M3C suction R31T Thermistor M1...

Page 136: ...valve gas relief Y8E Electronic expansion valve liquid injection Y13E Electronic expansion valve outdoor evaporation Y14E Electronic expansion valve suction oil return M1C Y16E Electronic expansion v...

Page 137: ...BS3 Push buttons mode set return C503 C506 Capacitor A2P C507 Film capacitor A2P DS1 DS2 DIP switch A1P E1HC Crankcase heater M1C F1U F2U Fuse T 6 3 A 250 V A1P F1U Fuse A6P F101U Fuse A4P F3U F4U Fu...

Page 138: ...itioner S1NPM Medium pressure sensor S1PH Pressure switch high pressure protection M1C S1S Operation switch REMOTE OFF ON T1A Current sensor A1P V1R Power module A2P A4P V1D Diode A2P X1A X2A Connecto...

Page 139: ...oduct or application explaining how to install configure and maintain it Operation manual Instruction manual specified for a certain product or application explaining how to operate it Maintenance ins...

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