Daikin VRV 5 RXYA8A7Y1B Installer And User Manual Download Page 2

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Table of contents

Installer and user reference guide

RYMA5+RXYA8~20A7Y1B

VRV 5 heat pump

4P749918-1 – 2023.12

Table of contents

1 About this document

1.1

Meaning of warnings and symbols.................................................................................................................................

2 General safety precautions

2.1

For the installer ...............................................................................................................................................................

2.1.1

General ...........................................................................................................................................................

2.1.2

Installation site ...............................................................................................................................................

2.1.3

Refrigerant — in case of R410A or R32..........................................................................................................

2.1.4

Electrical ......................................................................................................................................................... 11

3 Specific installer safety instructions

3.1

Instructions for equipment using R32 refrigerant ......................................................................................................... 18

For the user

4 User safety instructions

4.1

General............................................................................................................................................................................ 21

4.2

Instructions for safe operation ....................................................................................................................................... 22

5 About the system

5.1

System layout.................................................................................................................................................................. 28

6 User interface

7 Operation

7.1

Before operation............................................................................................................................................................. 30

7.2

Operation range.............................................................................................................................................................. 30

7.3

Operating the system ..................................................................................................................................................... 31
7.3.1

About operating the system........................................................................................................................... 31

7.3.2

About cooling, heating, fan only, and automatic operation ......................................................................... 31

7.3.3

About the heating operation.......................................................................................................................... 31

7.3.4

To operate the system (WITHOUT cool/heat changeover remote control switch)...................................... 32

7.3.5

To operate the system (WITH cool/heat changeover remote control switch)............................................. 33

7.4

Using the dry program.................................................................................................................................................... 33
7.4.1

About the dry program................................................................................................................................... 33

7.4.2

To use the dry program (WITHOUT cool/heat changeover remote control switch) .................................... 34

7.4.3

To use the dry program (WITH cool/heat changeover remote control switch) ........................................... 34

7.5

Adjusting the air flow direction ...................................................................................................................................... 35
7.5.1

About the air flow flap.................................................................................................................................... 35

7.6

Setting the master user interface................................................................................................................................... 36
7.6.1

About setting the master user interface........................................................................................................ 36

7.6.2

To designate the master user interface......................................................................................................... 36

7.7

About control systems .................................................................................................................................................... 36

8 Energy saving and optimum operation

8.1

Available main operation methods ................................................................................................................................ 39

8.2

Available comfort settings .............................................................................................................................................. 39

9 Maintenance and service

9.1

Precautions for maintenance and service...................................................................................................................... 40

9.2

Maintenance before a long stop period......................................................................................................................... 40

9.3

Maintenance after a long stop period............................................................................................................................ 40

9.4

About the refrigerant...................................................................................................................................................... 41

9.5

After-sales service........................................................................................................................................................... 41
9.5.1

Recommended maintenance and inspection ................................................................................................ 41

9.5.2

Recommended maintenance and inspection cycles ..................................................................................... 42

9.5.3

Shortened maintenance and replacement cycles ......................................................................................... 42

10 Troubleshooting

10.1

Error codes: Overview .................................................................................................................................................... 45

10.2

Symptoms that are NOT system malfunctions............................................................................................................... 48
10.2.1

Symptom: The system does not operate....................................................................................................... 48

10.2.2

Symptom: Cool/Heat cannot be changed over ............................................................................................. 48

10.2.3

Symptom: Fan operation is possible, but cooling and heating do not work ................................................ 48

10.2.4

Symptom: The fan speed does not correspond to the setting...................................................................... 48

10.2.5

Symptom: The fan direction does not correspond to the setting................................................................. 49

Summary of Contents for VRV 5 RXYA8A7Y1B

Page 1: ...Installer and user reference guide VRV 5 heat pump RXYA8A7Y1B RXYA10A7Y1B RXYA12A7Y1B RXYA14A7Y1B RXYA16A7Y1B RXYA18A7Y1B RXYA20A7Y1B RYMA5A7Y1B...

Page 2: ...ram WITHOUT cool heat changeover remote control switch 34 7 4 3 To use the dry program WITH cool heat changeover remote control switch 34 7 5 Adjusting the air flow direction 35 7 5 1 About the air fl...

Page 3: ...y only for 5 12 HP 57 15 About the units and options 59 15 1 Identification label Outdoor unit 59 15 2 About the outdoor unit 60 15 3 System layout 60 15 4 Combining units and options 61 15 4 1 About...

Page 4: ...e additional refrigerant amount 117 19 4 To charge refrigerant Flow chart 120 19 5 To charge refrigerant 120 19 6 Error codes when charging refrigerant 123 19 7 Checks after charging refrigerant 123 1...

Page 5: ...22 8 Operating the unit 170 23 Hand over to the user 171 24 Maintenance and service 172 24 1 Maintenance safety precautions 172 24 1 1 To prevent electrical hazards 172 24 2 Checklist for yearly main...

Page 6: ...and user reference guide Preparation of the installation reference data Detailed step by step instructions and background information for basic and advanced usage Format Digital files on https www da...

Page 7: ...RMATION Indicates useful tips or additional information Symbols used on the unit Symbol Explanation Before installation read the installation and operation manual and the wiring instruction sheet Befo...

Page 8: ...are parts made or approved by Daikin unless otherwise specified WARNING Make sure installation testing and applied materials comply with applicable legislation on top of the instructions described in...

Page 9: ...pheres In places where there is machinery that emits electromagnetic waves Electromagnetic waves may disturb the control system and cause malfunction of the equipment In places where there is a risk o...

Page 10: ...When the refrigerant system is to be opened refrigerant MUST be treated according to the applicable legislation NOTICE Make sure refrigerant piping installation complies with applicable legislation In...

Page 11: ...cal DANGER RISK OF ELECTROCUTION Turn OFF all power supply before removing the switch box cover connecting electrical wiring or touching electrical parts Disconnect the power supply for more than 10 m...

Page 12: ...ctor WARNING After finishing the electrical work confirm that each electrical component and terminal inside the switch box is connected securely Make sure all covers are closed before starting up the...

Page 13: ...radio waves a distance of 1 meter may NOT be sufficient NOTICE ONLY applicable if the power supply is three phase and the compressor has an ON OFF starting method If there exists the possibility of r...

Page 14: ...guarantee to provide adequate protection to radio reception in such locations CAUTION Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency WARNING If the appliance cont...

Page 15: ...ons CAUTION Do NOT use mineral oil on flared part Do NOT reuse piping from previous installations NEVER install a drier to this unit to guarantee its lifetime The drying material may dissolve and dama...

Page 16: ...the formation of a harmful gas Turn OFF any combustible heating devices ventilate the room and contact the dealer where you purchased the unit Do NOT use the unit until a service person confirms that...

Page 17: ...ay cause accidents WARNING All wiring MUST be performed by an authorised electrician and MUST comply with the national wiring regulation Make electrical connections to the fixed wiring All components...

Page 18: ...nit ALWAYS make sure that the unit is disconnected from the mains Turn off the respective circuit breaker When a safety device was activated stop the unit and find out why the safety device was activa...

Page 19: ...tion or pulsation to refrigeration piping Protect the protection devices piping and fittings as much as possible against adverse environmental effects Provide space for expansion and contraction of lo...

Page 20: ...For the user Installer and user reference guide 20 RYMA5 RXYA8 20A7Y1B VRV 5 heat pump 4P749918 1 2023 12 For the user...

Page 21: ...s and above and persons with reduced physical sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a...

Page 22: ...that the batteries may NOT be mixed with unsorted household waste If a chemical symbol is printed beneath the symbol this chemical symbol means that the battery contains a heavy metal above a certain...

Page 23: ...dy to the air flow for a long time WARNING This unit contains electrical and hot parts WARNING Before operating the unit be sure the installation has been carried out correctly by an installer Mainten...

Page 24: ...refrigerant see 9 4 About the refrigerant 441 WARNING MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable WARNING The refrigerant inside the unit is mildly flammable but no...

Page 25: ...aked flames The refrigerant itself is entirely safe non toxic and mildly flammable but it will generate toxic gas when it accidentally leaks into a room where combustible air from fan heaters gas cook...

Page 26: ...ty instructions Installer and user reference guide 26 RYMA5 RXYA8 20A7Y1B VRV 5 heat pump 4P749918 1 2023 12 CAUTION Do NOT touch the heat exchanger fins These fins are sharp and could result in cutti...

Page 27: ...3 Possible combinations of outdoor units 462 For more specifications see technical engineering data WARNING Do NOT modify disassemble remove reinstall or repair the unit yourself as incorrect dismant...

Page 28: ...t which is chosen some functionality will or will not exist It will be indicated throughout this operation manual when certain features have exclusive model rights or not INFORMATION The following fig...

Page 29: ...e are dangerous to touch and appliance problems may happen For checking and adjusting the internal parts contact your dealer This operation manual offers a non exhaustive overview of the main function...

Page 30: ...6 7 6 2 To designate the master user interface 36 7 7 About control systems 36 7 1 Before operation CAUTION See 4 User safety instructions 421 to acknowledge all related safety instructions NOTICE NEV...

Page 31: ...supply is turned off during operation operation will restart automatically after the power turns back on again 7 3 2 About cooling heating fan only and automatic operation Changeover cannot be made w...

Page 32: ...s automatically stopped The display of the user interface shows It may take some time before the fan starts This is not a malfunction INFORMATION The heating capacity drops when the outside temperatur...

Page 33: ...start 1 Select operation mode with the cool heat changeover switch as follows Cooling operation Heating operation Fan only operation 1 1 1 1 1 1 1 1 2 Press the ON OFF button on the user interface Re...

Page 34: ...ion 435 for details To stop 4 Press the ON OFF button on the user interface once again Result The operation lamp goes out and the system stops operating NOTICE Do not turn off power immediately after...

Page 35: ...operation When operating continuously at horizontal air flow direction When continuous operation with downward air flow is performed at the time of cooling with a ceiling suspended or a wall mounted...

Page 36: ...e current master user interface for 4 seconds In case this procedure was not yet performed the procedure can be executed on the first user interface operated Result The display showing changeover unde...

Page 37: ...escription Two user interface control system Two user interfaces control one indoor unit in case of group control system one group of indoor units The unit is individually operated NOTICE Contact your...

Page 38: ...rting the unit turn on the main power supply switch 6 hours before operation to ensure smooth running Refer to Maintenance in the indoor unit manual When the display shows time to clean the air filter...

Page 39: ...is idea the system automatically starts increasing its refrigerant temperature automatically reducing the delivered capacity and increasing the system s efficiency Hi sensible economic cooling heating...

Page 40: ...l may get discoloured or the coating peeled off If it is heavily dirty soak a cloth in water diluted neutral detergent squeeze it well and wipe the panel clean Wipe it with another dry cloth 9 2 Maint...

Page 41: ...installer for more information NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO2 equivalent Formula to...

Page 42: ...er 5 years Sensor thermistor etc 5 years User interface and switches 25 000 hours Drain pan 8 years Expansion valve 20 000 hours Solenoid valve 20 000 hours The table assumes the following conditions...

Page 43: ...cycle replacements and or repairs Air filter 1 year 5 years High efficiency filter 1 year Fuse 10 years Crankcase heater 8 years Pressure containing parts In case of corrosion contact your local deal...

Page 44: ...ction code If the system does NOT operate properly except for the above mentioned cases and none of the above mentioned malfunctions is evident investigate the system in accordance with the following...

Page 45: ...possible but cooling and heating do not work 48 10 2 4 Symptom The fan speed does not correspond to the setting 48 10 2 5 Symptom The fan direction does not correspond to the setting 49 10 2 6 Sympto...

Page 46: ...nction indoor liquid Heat exchanger thermistor malfunction indoor gas Suction air thermistor malfunction indoor Discharge air thermistor malfunction indoor Movement detector or floor temperature senso...

Page 47: ...outdoor Liquid temperature sensor coil malfunction outdoor Gas temperature sensor after subcool HE malfunction outdoor High pressure sensor malfunction S1NPH Low pressure sensor malfunction S1NPL INV...

Page 48: ...peration button causes the display to blink for a few seconds The blinking display indicates that the user interface cannot be used The system does not start immediately after the power supply is turn...

Page 49: ...unit When the system is changed over to heating operation after defrost operation Moisture generated by defrost becomes steam and is exhausted 10 2 8 Symptom The user interface reads U4 or U5 and sto...

Page 50: ...ive off odours The unit can absorb the smell of rooms furniture cigarettes etc and then emit it again 10 2 14 Symptom The outdoor unit fan does not spin During operation the speed of the fan is contro...

Page 51: ...on Installer and user reference guide 51 RYMA5 RXYA8 20A7Y1B VRV 5 heat pump 4P749918 1 2023 12 11 Relocation Contact your dealer to remove and reinstall the entire unit Moving units requires technica...

Page 52: ...required by law to collect transport and discard the refrigerant in accordance with the hydrofluorocarbon collection and destruction regulations NOTICE Do NOT try to dismantle the system yourself dism...

Page 53: ...ue choose Continue to Europe for the international website Other country for a country related site Result You are directed to the Seasonal efficiency webpage 3 Under Eco Design Ener LOT 21 click Gene...

Page 54: ...For the installer Installer and user reference guide 54 RYMA5 RXYA8 20A7Y1B VRV 5 heat pump 4P749918 1 2023 12 For the installer...

Page 55: ...e following Fragile handle the unit with care Keep the unit upright in order to avoid compressor damage Lift the unit preferably with a crane and 2 belts of at least 8 m long as shown in the figure be...

Page 56: ...ING VALUE REMARK DATE 3P328192 1 3 FOR DETAILS CONCERNING PIPING SELECTION AND CALCULATION OR HOW TO OPERATE THE LEAK DETECTION FUNCTION PLEASE REFER TO THE INSTALLATION MANUAL 2 RECORD OF ADDITIONAL...

Page 57: ...pipe Front connection ID a ID b Bottom connection ID a OD b 5 19 1 19 1 8 10 12 22 2 14 16 28 6 18 20 Liquid pipe Front connection ID b ID a Bottom connection ID b ID a 5 9 5 9 5 8 10 12 12 7 14 12 7...

Page 58: ...he box Installer and user reference guide 58 RYMA5 RXYA8 20A7Y1B VRV 5 heat pump 4P749918 1 2023 12 2 Remove the transportation stay b as shown in the figure below 1 2 12 3 N m a b a Bolt b Transporta...

Page 59: ...Possible combinations of outdoor units 62 15 4 4 Possible options for the outdoor unit 62 15 5 About the piping connections 64 15 1 Identification label Outdoor unit Location 14 20 HP 8 12 HP Model i...

Page 60: ...outdoor installation and aimed for heat pump applications including air to air applications These units have in single use heating capacities ranging from 25 to 63 kW and cooling capacities rating fro...

Page 61: ...ur system setup outdoor unit indoor unit s will work you have to consult the latest technical engineering data for the VRV 5 heat pump This heat pump system can be combined with several types of indoo...

Page 62: ...combine more than two units to create a multi combination The combinations in the table below are standard combinations Other combinations are possible as free combination Maximum capacity for multi o...

Page 63: ...also 17 1 2 Additional installation site requirements of the outdoor unit in cold climates 485 Demand PCB DTA104A61 62 To enable the power saving consumption control by digital inputs you MUST instal...

Page 64: ...Equalising piping c Gas piping The VRV heat pump system has three piping connections Depending on the type of application connection of the piping will vary For single use application only gas and liq...

Page 65: ...f enhanced tightness refrigerating systems of the IEC 60335 2 40 this system is equipped with an alarm in the remote controller and shut off valves in the SV unit Both safety measures are installation...

Page 66: ...lare connections that are compliant with the latest version of ISO14903 can be used Low temperature solder alloys shall not be used for pipe connections For piping installed in the occupied space make...

Page 67: ...t serves a different room than where it is installed both supply and return air MUST be directly ducted to that room The room area and remote controller rules MUST be followed for both installed and s...

Page 68: ...otal amount of refrigerant in the system Contains fluorinated greenhouse gases 2 1 1 1 2 2 kg tCO2 eq 1000 GWP kg kg kg GWP xxx R32 Total charge Factory charge a additional charge b a The factory char...

Page 69: ...0 20 20 47 143 95 95 11 33 22 22 48 146 97 97 12 36 24 24 49 149 99 99 13 39 26 26 50 152 101 101 14 42 28 28 51 154 103 103 15 45 30 30 52 157 105 105 16 48 32 32 53 160 107 107 17 51 34 34 54 163 10...

Page 70: ...graph All other floors b OTHER FLOORS LOWEST UNDERGROUND FLOOR The graphs and table are based on an installation height of the indoor unit between 1 8 m and 2 2 m bottom of the indoor unit or bottom o...

Page 71: ...15 35 45 m kg Amin m2 No safety measure c Alarm shut off valve SV unit OR Alarm natural ventilation f m Total refrigerant charge in the system kg Amin Minimum room area m a Lowest underground floor L...

Page 72: ...nd table Amin m YES NO Indoor unit installed conditioning on lowest underground floor No safety measure No safety measure Alarm Natural ventilation NOT allowed Total charge amount kg Alarm Natural ven...

Page 73: ...ns are restricted in their movements e g hospitals an uncontrolled number of persons is present or buildings where people are not aware of the safety precautions it is mandatory to install one of the...

Page 74: ...ilable The remote controller should be placed at a supervised location This remote controller can only be the slave Note In order to add a supervisor remote controller to the system a field setting mu...

Page 75: ...7 79 8 240 79 8 250 79 8 m Total refrigerant charge in the system kg A1 Area of the room with natural ventilation m Amin Minimum room area of the space in which the indoor unit is installed m Note Rou...

Page 76: ...r arrangements that provide an airflow path between the connected rooms Example The total amount of refrigerant in the VRV system is 20 kg The VRV system has two indoor units which are installed in a...

Page 77: ...branch pipe ports are combined in order to form a single branch pipe port e g FXMA200 250 they must be considered as a single branch pipe port To determine the charge limit Step 1 In order to derive...

Page 78: ...ve 2 2 m and custom indoor units which can lead to lower minimum room area requirements In case the capacity class allowed per branch pipe port is bigger than 140 use SV1A unit or combine two ports wh...

Page 79: ...smallest room size needs to be considered 20 m Use the table under Step 2 to find the maximum capacity class limit of the indoor unit 140 The selected indoor unit is 32 OK Port B only serves room 2 u...

Page 80: ...natural ventilation and the space in which the indoor unit is installed The partition between two rooms on the same floor MUST meet one of the two requirements for natural ventilation Derive total re...

Page 81: ...a i c f b e d f g e h f a Heat pump outdoor unit b Safety valve unit SV c Indoor unit with no safety measure d Indoor unit with alarm safety measure e Remote controller in normal mode R32 safety deac...

Page 82: ...ient space to transport the unit in and out of the site Do NOT install the unit in places often used as work place In case of construction works e g grinding works where a lot of dust is created the u...

Page 83: ...er may not operate NOTICE If the equipment is installed closer than 30 m to a residential location the professional installer MUST evaluate the EMC situation before installation NOTICE The installatio...

Page 84: ...nit will not disturb anyone and the location is selected according the applicable legislation Heat exchanger fins are sharp and injury is possible Choose an installation location where there is no ris...

Page 85: ...windbreaker 1 5 height of outdoor unit Mind the service space requirements when installing the windbreaker a b c d c d a Sea wind b Building c Outdoor unit d Windbreaker 17 1 2 Additional installatio...

Page 86: ...ambient temperature with high humidity conditions make sure to take precautions to keep the drain holes of the unit free by using proper equipment In heating T AO C WB a b 20 15 5 15 10 5 0 5 10 15 2...

Page 87: ...R RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING 14 14 5 12 HP 14 20 HP Once the front plates open the switch box can be accessed See 17 2 3 To open the switch box of the outdoor unit 487 For s...

Page 88: ...ion structure Make sure the unit is installed level on a sufficiently strong base to prevent vibration and noise NOTICE When the installation height of the unit needs to be increased do NOT use stands...

Page 89: ...nel around the foundation to drain waste water from around the unit During heating operation and when the outdoor temperatures are negative the drained water from the outdoor unit will freeze up If th...

Page 90: ...2 6 To protect against contamination 106 18 2 7 To remove the pinched pipes 107 18 2 8 To braze the pipe end 108 18 2 9 To connect the refrigerant piping to the outdoor unit 108 18 2 10 To connect the...

Page 91: ...g pressure of the unit see PS High on the unit name plate larger piping thickness might be required 18 1 3 Refrigerant piping insulation Use polyethylene foam as insulation material with a heat transf...

Page 92: ...g table in accordance with the indoor unit total capacity type connected downstream Do not let the connection piping exceed the refrigerant piping size chosen by the general system model name Example...

Page 93: ...owed to use other diameters mm sizes taken the following into account Select the pipe size nearest to the required size Use the suitable adapters for the changeover from inch to mm pipes field supply...

Page 94: ...KHRQ22M29H inch KHRQM22M29H9 mm 290 x 650 KHRA22M65H inch KHRAM22M65H mm INFORMATION Maximum 8 branches can be connected to a header How to choose an outdoor multi connection piping kit Choose from th...

Page 95: ...onnection to the outdoor unit For more information see 18 Piping installation 490 g SV unit Description Model SV1 SV4 SV6 SV8 Maximum number of connectable indoor units per SV unit a 5 20 30 40 Maximu...

Page 96: ...door units Definitions Term Definition Actual piping length Pipe length between outdoor and indoor units Equivalent piping length Pipe length between outdoor and indoor units including the equivalent...

Page 97: ...units 30 15 c H3 Height difference between outdoor units 5 H4 Height difference between EKEXVA kits and AHU units 5 a The allowable height difference is 50 m in case the outdoor unit is positioned hi...

Page 98: ...Maximum length actual equivalent Longest pipe from the outdoor unit or the last multi outdoor piping branch A B1 C1 A B2 C2 A B1 C3 A B1 D C4 A F G 165 m 190 m a 135 m 160 m a b Longest pipe after the...

Page 99: ...e total piping length is within limitations The piping length difference between the nearest indoor unit to the outdoor unit and the farthest indoor unit to the outdoor unit is 40 m Connection with VR...

Page 100: ...up of the piping double its length in the calculation of the total piping length Make sure the total piping length is within limitations The piping length difference between the nearest indoor unit t...

Page 101: ...To indoor unit b Oil collects to the outmost outdoor unit when the system stops NOT allowed oil remains in piping Allowed If the piping length between the outdoor units exceeds 2 m create a rise of 20...

Page 102: ...efrigerant piping Before connecting the refrigerant piping make sure the outdoor and indoor units are mounted Connecting the refrigerant piping involves Routing and connecting the refrigerant piping t...

Page 103: ...ing the piping Use caution when passing copper tubes through walls Unit Installation period Protection method Outdoor unit 1 month Pinch the pipe 1 month Pinch or tape the pipe Indoor unit Regardless...

Page 104: ...ort b Dust cap c Hexagon hole d Shaft e Seal Do NOT apply excessive force to the stop valve Doing so may break the valve body To open the stop valve 1 Remove the dust cap 2 Insert a hexagon wrench int...

Page 105: ...t is a Schrader type valve After handling the service port make sure to tighten the service port cover securely For the tightening torque refer to the table below Check for refrigerant leaks after tig...

Page 106: ...with protective tape to prevent damage 18 2 6 To protect against contamination Protect the piping as described in the following table to prevent dirt liquid or dust from entering the piping Unit Insta...

Page 107: ...overy unit through a manifold to the service port of all stop valves a a b b a Service port b Stop valve 3 Recover gas and oil from the pinched piping by using a recovery unit CAUTION Do NOT vent gase...

Page 108: ...e a b c d e f f a Refrigerant piping b Part to be brazed c Taping d Manual valve e Pressure reducing valve f Nitrogen Do NOT use anti oxidants when brazing pipe joints Residue can clog pipes and break...

Page 109: ...t the stop valves to the field piping using the accessory pipes supplied with the unit The connections to the branch kits are the responsibility of the installer field piping 18 2 10 To connect the mu...

Page 110: ...1 About checking the refrigerant piping Refrigerant piping works are finished The indoor units SV units outdoor unit are already powered ON Use procedure Method 2 after power ON Finish piping work Us...

Page 111: ...refrigerant piping for example water may have entered the piping first carry out the vacuum drying procedure below until all moisture has been removed All piping inside the unit has been factory teste...

Page 112: ...Close Gas line stop valve Close Equalising line stop valve Close NOTICE The connections to the indoor units and all indoor units should also be leak and vacuum tested Keep any possible field supplied...

Page 113: ...lves to the indoor units open as well Leak test and vacuum drying should be done before the power supply is set to the unit If not see 18 3 1 About checking the refrigerant piping 4110 for more inform...

Page 114: ...the insulation on the refrigerant piping according to the installation environment Ambient temperature Humidity Minimum thickness 30 C 75 to 80 RH 15 mm 30 C 80 RH 20 mm Between outdoor and indoor uni...

Page 115: ...sealing material to prevent condensed water on the stop valves from moving to the indoor unit NOTICE Any exposed piping can cause condensation 7 Reattach the service cover and the piping intake plate...

Page 116: ...n on the power of all outdoor units NOTICE Turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor NOTICE If operation is perfor...

Page 117: ...be leak tested on completion of charging but prior to commissioning A follow up leak test shall be carried out prior to leaving the site 19 2 About charging refrigerant Once vacuum drying and leak tes...

Page 118: ...actory charge refer to the unit name plate NOTICE The total refrigerant charge amount in the system MUST always be lower than 79 8 kg Formula R X1 19 1 0 23 X2 15 9 0 16 X3 12 7 0 10 X4 9 5 0 053 X5 6...

Page 119: ...indoor units the connection ratio must comply with the following requirements For more information see the technical engineering data Other combinations than those mentioned in the table are not allow...

Page 120: ...o test run Q R Q R Q R p p A B R32 d Step 4a Close valve B Step 5 Connect valve A to the refrigerant charge port d Open all outdoor unit stop valves Step 6 Activate field setting 2 20 1 Unit will star...

Page 121: ...a Weighing scales b Refrigerant R32 tank siphon system c Vacuum pump d Liquid line stop valve B Valve B 4 Do one of the following If Then a The determined additional refrigerant amount is not reached...

Page 122: ...ngs 4148 Result The unit will start operation 7 Open valve A and charge refrigerant until the remaining determined additional refrigerant amount is added and then close valve A 8 Close valve A and pre...

Page 123: ...eenhouse gases 2 1 1 1 2 2 kg tCO2 eq GWP kg 1000 kg kg GWP XXX RXXX a f c d e a If a multilingual fluorinated greenhouse gases label is delivered with the unit see accessories peel off the applicable...

Page 124: ...joints indoors 1 Use a leakage test method with a minimum sensitivity of 5 g of refrigerant year Test leaks using a pressure of at least 0 25 times the maximum working pressure see PS High on the unit...

Page 125: ...ly 136 20 6 To connect the power supply 137 20 7 To connect the external outputs 138 20 8 To check the insulation resistance of the compressor 139 20 1 About connecting the electrical wiring Typical w...

Page 126: ...se overheating electrical shocks or fire Do NOT install a phase advancing capacitor because this unit is equipped with an inverter A phase advancing capacitor will reduce performance and may cause acc...

Page 127: ...nverter PCB cooling pipe in order to avoid wire damage due to high temperature piping Firmly close the lid and arrange the electrical wires so as to prevent the lid or other parts from coming loose Th...

Page 128: ...ch j Central user interface etc A Outdoor indoor interconnection wiring B Master slave interconnection wiring NOTICE Sheathed and shielded cables are required for interconnection wiring between outdoo...

Page 129: ...oles with packing materials to be prepared on site 20 1 4 Guidelines when connecting the electrical wiring NOTICE We recommend using solid single core wires If stranded wires are used slightly twist t...

Page 130: ...re single core or twisted stranded conductor 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 For...

Page 131: ...equal to Zmax EN IEC 61000 3 12 provided that the short circuit power Ssc is greater than or equal to the minimum Ssc value at the interface point between the user s supply and the public system EN I...

Page 132: ...mmended field fuse 20 A 25 A 32 A 32 A 40 A 50 A Earth leakage circuit breaker residual current circuit breaker Must comply with national wiring regulation a MCA Minimum circuit ampacity Stated values...

Page 133: ...RXYA10 units Minimum circuit ampacity of the RXYA10 22 0 A Accordingly the minimum circuit ampacity of the RXYA20 22 0 22 0 44 0 A Multiply the above result by 1 1 44 0 A 1 1 48 4 A so the recommended...

Page 134: ...een outdoor unit and SV unit Interconnection wiring can be routed through the front side only Fix it to the upper mounting hole b a A b a c c c d c d c 5 12 HP 14 20 HP A A a Interconnection wiring po...

Page 135: ...NIT SV UNIT F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 TO IN D TO OUT D F1 F2 F1 F2 TO MULTI UNIT Q1 Q2 c d TO IN D TO OUT D F1 F2 F1 F2 Q1 Q2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 TO MULTI UNIT TO IN D TO OUT...

Page 136: ...tion 20 5 To route and fix the power supply NOTICE When routing earth wires secure clearance of 25 mm or more away from compressor lead wires Failure to observe this instruction properly may adversely...

Page 137: ...LK to L3 and BLU to N g Earth wire GRN YLW h Tie wrap i Cup washer j When connecting the earth wire it is recommended to perform curling NOTICE Never connect the power supply to transmission wiring te...

Page 138: ...M The SVS output is a contact on terminal X2M that closes in case a leak is detected failure or disconnection of the R32 sensor located in the SV unit or indoor unit The SVEO output is a contact on te...

Page 139: ...the technical data sheet of the user interface E g the BRC1H52 controller generates an alarm of 65 dB sound pressure measured at 1 m distance from the alarm 20 8 To check the insulation resistance of...

Page 140: ...eference guide 140 RYMA5 RXYA8 20A7Y1B VRV 5 heat pump 4P749918 1 2023 12 2 Turn ON the power and leave it on for 6 hours Result The compressor will heat up and evaporate any refrigerant in the compre...

Page 141: ...Available comfort settings 157 21 2 3 Example Automatic mode during cooling 159 21 2 4 Example Automatic mode during heating 160 21 3 Using the leak detection function 161 21 3 1 About automatic leak...

Page 142: ...field settings of the system Consulting the current field setting value and changing the current field setting value is possible In general normal operation can be resumed without special intervention...

Page 143: ...t pen to avoid touching of live parts Make sure to re attach the inspection cover into the switch box cover and to close the front plate s inspection cover after the job is finished During operation o...

Page 144: ...switch between the default situation mode 1 and mode 2 Access Action Default situation Mode 1 Push BS1 one time 7 segment display indication changes to Push BS1 one more time to return to the default...

Page 145: ...hich are connected to the system Result Mode 1 setting 10 is addressed and selected return value is monitored information 5 To quit mode 1 push BS1 one time 21 1 6 To use mode 2 The master unit should...

Page 146: ...tting situation 5 To change the value of the setting push BS2 until the required value appears on the 7 segment display 6 Push BS3 one time to validate the change 7 Push BS3 to start operation accordi...

Page 147: ...lected power consumption limitation The second method is to enable power consumption limitation based on an external input For this operation an optional accessory is required 1 5 1 6 Code Shows 1 5 T...

Page 148: ...ws the remaining days until the next automatic leak detection if automatic leak detection function is activated When the automatic leak detection function was activated through mode 2 settings it is p...

Page 149: ...Te target temperature during cooling operation 2 8 Te target C 0 default Auto 2 6 3 7 4 8 5 9 6 10 7 11 For more information and advice about the impact of these settings see 21 2 Energy saving and op...

Page 150: ...0 x 65 14 65 x 70 15 70 x 75 16 Setting cannot be used Maximum allowable charge MUST be 79 8 kg For details concerning the charging procedure see 19 2 About charging refrigerant 4117 For details conce...

Page 151: ...ort 2 21 Refrigerant recovery vacuuming mode In order to achieve a free pathway to reclaim refrigerant out of the system or to remove residual substances or to vacuum the system it is necessary to app...

Page 152: ...on start time This setting is used in conjunction with setting 2 22 2 26 Start time automatic low noise operation approximately 1 20h00 2 default 22h00 3 24h00 2 27 Low noise operation stop time This...

Page 153: ...consumption limitation If the system always needs to be running under power consumption limitation conditions this setting activates and defines the level power consumption limitation that will be app...

Page 154: ...Description 0 default Direct connection to the outdoor unit is not possible 1 Direct connection to the outdoor unit is allowed 2 60 Supervisor remote controller setting A power reset is required to s...

Page 155: ...the automatic leak detection will be executed depending on the defined value setting The timing for the next automatic refrigerant leak detection is subject to setting 2 65 The automatic leak detecti...

Page 156: ...Change Cooling operation 2 8 2 Heating operation 2 9 6 Automatic The refrigerant temperature is set depending on the outdoor ambient conditions As such adjusting the refrigerant temperature to match t...

Page 157: ...rarily changing the refrigerant temperature to different values in order to achieve requested conditions more quickly Powerful Overshoot during heating operation or undershoot during cooling operation...

Page 158: ...rshoot during heating operation or undershoot during cooling operation is allowed compared to the requested refrigerant temperature in order to achieve the required room temperature very fast The over...

Page 159: ...setting is used in conjunction with setting 2 9 21 2 3 Example Automatic mode during cooling A B E 100 50 Te C D 3 C 6 C 35 C F A Actual load curve B Virtual load curve initial capacity automatic mod...

Page 160: ...matic mode during heating A B 100 70 E Tc C D 49 C 46 C F 2 C A Virtual load curve default automatic mode peak capacity B Load curve C Virtual target value initial condensation temperature value autom...

Page 161: ...ation NOTICE If a wrong value is input for the additional charged refrigerant weight the accuracy of the leak detection function will decrease INFORMATION The weighed and already recorded amount of ad...

Page 162: ...leak detection operation Restart leak detection operation Indicates an indoor unit which is not compatible with leak detection functionality is installed Result of leak detection operation is informed...

Page 163: ...ommissioning 164 22 4 Checklist during commissioning 165 22 5 About the SV unit test run 166 22 6 About the system test run 166 22 6 1 To perform a test run 166 22 6 2 Correcting after abnormal comple...

Page 164: ...the compressor During test operation the outdoor unit and the indoor units will start up Make sure that the preparations of all indoor units are finished field piping electrical wiring air purge See i...

Page 165: ...our local dealer Do not touch any refrigerant which has leaked out from refrigerant piping connections This may result in frostbite Oil leak Check the compressor for oil leakage If there is an oil lea...

Page 166: ...off the unit to conduct the SV unit test run 22 6 About the system test run NOTICE Make sure to carry out the test run after the first installation Otherwise the malfunction code will be displayed on...

Page 167: ...Communication check and stop valve check Pipe length check Refrigerant amount check Pump down operation Unit stop INFORMATION During the test operation it is not possible to stop the unit operation fr...

Page 168: ...the switch box inspection cover 2 Make sure the test run is fully completed without malfunction code see 22 6 1 To perform a test run 4166 3 To start the SV indoor unit connection check make field se...

Page 169: ...al completion of the test run 4167 to take actions for correcting the abnormality When the check is fully completed normal operation will be possible after 5 minutes In case group control is implement...

Page 170: ...interface wiring Note Connection check is not possible in the following cases connection with only air handling units pair or multi application connection of air curtain Biddle connection of air handl...

Page 171: ...erly 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 complete d...

Page 172: ...maintenance of the outdoor unit 173 24 3 About service mode operation 173 24 3 1 To use vacuum mode 174 24 3 2 To recover refrigerant 174 24 3 3 Before the maintenance and service of a system with SV...

Page 173: ...se the malfunction code will be displayed on the user interface or on the outdoor unit 7 segment display and normal operation will NOT be performed For details refer to the wiring diagram labelled on...

Page 174: ...gerant from the system into the outdoor unit Possible consequence Self combustion and explosion of the compressor because of air going into the operating compressor Use a separate recovery system so t...

Page 175: ...1 4 3P736525 1 3 2 b a d c f e a Caution for maintenance and servicing of SV unit b Consult the installation manual or service manual c Apply the field setting on the outdoor unit d Wait for two minu...

Page 176: ...CTROCUTION DANGER RISK OF BURNING SCALDING WARNING When carrying out an inspection on the switch box of the unit ALWAYS make sure that the unit is disconnected from the mains Turn off the respective c...

Page 177: ...function code and a sub code The sub code indicates more detailed information about the malfunction code The malfunction code will be displayed intermittent Example Code Example Main code Sub code Wit...

Page 178: ...t is directly connected to the outdoor unit the compressor will shut down and the unit will stop operating Also all shut off valves for all ports in all SV units in the system will be closed Refer to...

Page 179: ...input Refer to the service manual for more information R32 sensor malfunction in one of the SV units Check connection on PCB or actuator The system will continue operation but SV unit in scope will s...

Page 180: ...wer heat exchanger Y3E main PCB X22A Check connection on PCB or actuator Electronic expansion valve malfunction receiver gas Y4E main PCB X25A Check connection on PCB or actuator Electronic expansion...

Page 181: ...PCB or actuator Heat exchanger deicer temperature sensor R11T main PCB X35A Check connection on PCB or actuator Upper heat exchanger gas temperature sensor R8T main PCB X29A Check connection on PCB or...

Page 182: ...ck connection Transmission outdoor unit inverter FAN2 transmission trouble main PCB X20A X28A X40A Check connection Transmission main PCB sub PCB main PCB X20A sub PCB X2A X3A Check connection INV1 un...

Page 183: ...utdoor unit connected Disconnect the outdoor unit No SV unit connected Connect a SV unit Wrong SV unit connected Disconnect the SV unit SV unit refrigerant type abnormality Check SV unit refrigerant t...

Page 184: ...an electrical contact that closes in case the indicated error occurs c The error code is only shown on the user interface of the indoor unit where the error occurs 25 4 Refrigerant leak detection syst...

Page 185: ...the ventilation system if equipped of the SV unit to evacuate the leaking refrigerant After the operation the system will go in locked state and the remote controllers will display an error Service is...

Page 186: ...case a leak is detected For exact model name see option list of the indoor unit For more information about this option refer to the installation manual of the optional output PCB Note Some centralise...

Page 187: ...4P749918 1 2023 12 26 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 legislation Uni...

Page 188: ...iagram Outdoor unit 190 27 3 Wiring diagram Outdoor unit 193 27 1 Service space Outdoor unit Make sure the space around the unit is adequate for servicing and the minimum space for air inlet and air o...

Page 189: ...s the wall heights of sides A C have no impact on service space dimensions Refer to the figure above for impact of wall heights of sides B D on service space dimensions In case of an installation site...

Page 190: ...gram Outdoor unit Piping diagram 5 12 HP a b d 3D138283 e c Y2E R16T Y1E R5T Y5S R8T R10T R12T R15T Y10S Y2S R7T Y4E R6T Y3E R11T R4T Y5E M1F R3T S1NPL Y3S R21T Y11S M1 S1NPH S1PH Y4S Y8S PHE R13T R9T...

Page 191: ...12 Piping diagram 14 20 HP a b d e c Y2E Y1E R5T Y5S R8T R10T R12T R15T Y10S Y2S R7T Y4E R6T Y3E R11T R4T Y5E M1F R3T S1NPL S2PH Y3S R21T Y11S S1NPH S1PH Y4S R13T R9T M2F Y7E R1T DT 3D138283 HPS M sv...

Page 192: ...Filter Check valve Pressure relief valve Thermistor Solenoid valve Heat sink PCB Capillary tube Expansion valve 4 way valve Propeller fan High pressure switch PL low pressure sensor PH high pressure s...

Page 193: ...S1 DS2 switches 3 Do NOT operate the unit by short circuiting protection device S1PH 4 Refer to the installation manual for connecting indoor outdoor interconnection F1 F2 and outdoor multi interconne...

Page 194: ...U A6P 14 20 HP only Fuse T 3 15 A 250 V F1U F2U Fuse T 1 A 250 V F3U Field fuse F101U A4P Fuse HAP A P Pilot lamp service monitor is green K R A P Relay on PCB L1R Reactor M1C Motor compressor M1F Mot...

Page 195: ...valve heat exchanger upper Y2E Electronic expansion valve subcool heat exchanger Y3E Electronic expansion valve heat exchanger lower Y4E Electronic expansion valve receiver gas Y5E Electronic expansi...

Page 196: ...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 instruction...

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Daikin VRV 5 RXYA8A7Y1B, Installer And User Manual

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