Daikin VRV IV+ RXYTQ8U5YF Page 71 Installer And User Manual Download

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Piping installation

Installer and user reference guide

RXYTQ
VRV IV+ heat pump for high ambient temperatures
4P561157-1B – 2021.11

WARNING

Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks,
ventilate the area immediately. Possible risks:

▪

Excessive refrigerant concentrations in a closed room can lead to oxygen
deficiency.

▪

Toxic gas might be produced if refrigerant gas comes into contact with fire.

WARNING

ALWAYS recover the refrigerant. Do NOT release them directly into the environment.
Use a vacuum pump to evacuate the installation.

▪

Only use phosphoric acid deoxidised seamless copper.

NOTICE

After all the piping has been connected, make sure there is no gas leak. Use nitrogen
to perform a gas leak detection.

17.2.3 Multiple outdoor units: Knockout holes

Connection

Description

Front connection

Remove the front plate knockout holes to connect.

Bottom connection

Remove the knockout holes on the bottom frame and
route the piping under the bottom.

17.2.4 To route the refrigerant piping

Installation of refrigerant piping is possible as front connection or side connection
(when taken out from the bottom) as shown in the figure below.

Summary of Contents for VRV IV+ RXYTQ8U5YF

Page 1: ...Installer and user reference guide VRV IV heat pump for high ambient temperatures RXYTQ8U5 U7YF RXYTQ10U5 U7YF RXYTQ12U5 U7YF RXYTQ14U5 U7YF RXYTQ16U5 U7YF...

Page 2: ...UT cool heat changeover remote control switch 28 7 4 3 To use the dry program WITH cool heat changeover remote control switch 28 7 5 Adjusting the air flow direction 29 7 5 1 About the air flow flap 2...

Page 3: ...15 About the units and options 52 15 1 Overview About the units and options 52 15 2 Identification label Outdoor unit 52 15 3 About the outdoor unit 53 15 4 System layout 53 15 5 Combining units and...

Page 4: ...finish the transmission wiring 97 18 5 To route and fix the power supply 97 18 6 To connect the power supply 98 18 7 To check the insulation resistance of the compressor 99 19 Configuration 100 19 1...

Page 5: ...guide 5 RXYTQ VRV IV heat pump for high ambient temperatures 4P561157 1B 2021 11 24 Disposal 133 25 Technical data 134 25 1 Service space Outdoor unit 134 25 2 Piping diagram Outdoor unit 136 25 3 Wi...

Page 6: ...ion and operation manual Installation and operation instructions Format Paper in the box of the outdoor unit Installer and user reference guide Preparation of the installation reference data Detailed...

Page 7: ...result in minor or moderate injury NOTICE Indicates a situation that could result in equipment or property damage INFORMATION Indicates useful tips or additional information Symbols used on the unit S...

Page 8: ...NING Improper installation or attachment of equipment or accessories could result in electrical shock short circuit leaks fire or other damage to the equipment ONLY use accessories optional equipment...

Page 9: ...of the unit Make sure the area is well ventilated Do NOT block any ventilation openings Make sure the unit is level Do NOT install the unit in the following places In potentially explosive atmosphere...

Page 10: ...o NOT release them directly into the environment Use a vacuum pump to evacuate the installation NOTICE After all the piping has been connected make sure there is no gas leak Use nitrogen to perform a...

Page 11: ...erant Possible consequence Incorrect refrigerant amount 2 1 4 Electrical DANGER RISK OF ELECTROCUTION Turn OFF all power supply before removing the switch box cover connecting electrical wiring or tou...

Page 12: ...of the earth leakage protector CAUTION When connecting the power supply connect the earth cable first before making the current carrying connections When disconnecting the power supply disconnect the...

Page 13: ...nts box is connected securely Make sure all covers are closed before starting up the unit NOTICE ONLY applicable if the power supply is three phase and the compressor has an ON OFF starting method If...

Page 14: ...nded when the service cover is removed DANGER RISK OF BURNING SCALDING DANGER RISK OF ELECTROCUTION WARNING Take sufficient precautions in case of refrigerant leakage If refrigerant gas leaks ventilat...

Page 15: ...earth the unit to a utility pipe surge absorber or telephone earth Incomplete earthing may cause electrical shock Install the required fuses or circuit breakers Secure the electrical wiring with cabl...

Page 16: ...er supply stress relief and the terminal block itself MUST be as such that the current carrying wires are tautened before the earth wire is in case the power supply is pulled loose from the stress rel...

Page 17: ...For the user Installer and user reference guide 17 RXYTQ VRV IV heat pump for high ambient temperatures 4P561157 1B 2021 11 For the user...

Page 18: ...om 8 years 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 appli...

Page 19: ...symbol This means 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 met...

Page 20: ...in operation Fingers may become caught or the unit may break down CAUTION Do NOT insert fingers rods or other objects into the air inlet or outlet Do NOT remove the fan guard When the fan is rotating...

Page 21: ...akage has been repaired or corrected before resuming operation WARNING Stop operation and shut OFF the power if anything unusual occurs burning smells etc Leaving the unit running under such circumsta...

Page 22: ...n instruments food plants animals or works of art NOTICE For future modifications or expansions of your system A full overview of allowable combinations for future system extensions is available in te...

Page 23: ...nstaller and user reference guide 23 RXYTQ VRV IV heat pump for high ambient temperatures 4P561157 1B 2021 11 6 User interface This operation manual offers a non exhaustive overview of the main functi...

Page 24: ...flap 29 7 6 Setting the master user interface 30 7 6 1 About setting the master user interface 30 7 6 2 To designate the master user interface VRV DX and Hydrobox 30 7 7 About control systems 30 7 1 B...

Page 25: ...out of the unit If the temperature or the humidity is beyond these conditions safety devices may be put in action and the air conditioner may not operate Above operation range is only valid in case d...

Page 26: ...on on the display Hot start In order to prevent cold air from blowing out of an indoor unit at the start of heating operation the indoor fan is automatically stopped The display of the user interface...

Page 27: ...sition To 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 int...

Page 28: ...ow direction 429 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 immediate...

Page 29: ...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 u...

Page 30: ...to the same outdoor unit flashes 2 Press the operation mode selector button of the controller that you wish to designate as the master user interface Result Designation is completed This user interfa...

Page 31: ...before operation to ensure smooth running Refer to Maintenance in the indoor unit manual When the display shows time to clean the air filter ask a qualified service person to clean the filters Refer...

Page 32: ...de is comfort feeling for the customer The selection method of indoor units is important and has to be considered as the available capacity is not the same as under basic operation For details concern...

Page 33: ...uted neutral detergent squeeze it well and wipe the panel clean Wipe it with another dry cloth In this chapter 9 1 Maintenance after a long stop period 33 9 2 Maintenance before a long stop period 34...

Page 34: ...410A Global warming potential GWP value 2087 5 NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO2 equiva...

Page 35: ...t dismantling or installation may cause an electrical shock or fire Contact your dealer In case of accidental refrigerant leaks make sure there are no naked flames The refrigerant itself is entirely s...

Page 36: ...it cannot be used if power fluctuation is outside the allowable range Bumps and vibrations are frequent Dust salt harmful gas or oil mist such as sulphurous acid and hydrogen sulfide may be present in...

Page 37: ...ber the operation lamp flashes and the malfunction code appears Notify your installer and report the malfunction code If the system does NOT operate properly except for the above mentioned cases and n...

Page 38: ...ration is possible but cooling and heating do not work 41 10 2 4 Symptom The fan speed does not correspond to the setting 41 10 2 5 Symptom The fan direction does not correspond to the setting 41 10 2...

Page 39: ...unction indoor Movement detector or floor temperature sensor malfunction indoor User interface thermistor malfunction indoor PCB malfunction outdoor Current leakage detector was activated outdoor High...

Page 40: ...y voltage Autocharge operation related Fin thermistor malfunction Autocharge operation related Autocharge operation related Autocharge operation related Capacity setting malfunction outdoor Abnormal l...

Page 41: ...ows that this is a slave user interface When the cool heat changeover remote control switch is installed and the display shows change over under centralized control this is because cool heat changeove...

Page 42: ...hen the noise ceases 10 2 9 Symptom Noise of air conditioners Indoor unit A zeen sound is heard immediately after the power supply is turned on The electronic expansion valve inside an indoor unit sta...

Page 43: ...y shows 88 This is the case immediately after the main power supply switch is turned on and means that the user interface is in normal condition This continues for 1 minute 10 2 16 Symptom The compres...

Page 44: ...and user reference guide 44 RXYTQ VRV IV heat pump for high ambient temperatures 4P561157 1B 2021 11 11 Relocation Contact your dealer for removing and reinstalling the total unit Moving units requir...

Page 45: ...This unit uses hydrofluorocarbon Contact your dealer when discarding this unit NOTICE Do NOT try to dismantle the system yourself dismantling of the system treatment of the refrigerant oil and other p...

Page 46: ...energylabel daikin eu 2 To continue 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...

Page 47: ...For the installer Installer and user reference guide 47 RXYTQ VRV IV heat pump for high ambient temperatures 4P561157 1B 2021 11 For the installer...

Page 48: ...2 Overview About the box This chapter describes what you have to do after the box with the outdoor unit is delivered on site It contains information about Unpacking and handling the outdoor unit Remo...

Page 49: ...ght of the unit A forklift can only be used for transport as long as the unit remains on its pallet as shown above 14 3 To unpack the outdoor unit Remove the packaging material from the unit Take care...

Page 50: ...DDITIONAL REFRIGERANT CHARGING AMOUNT 4 AFTER FILLING IN THIS TABLE PLEASE PUT IT ON THE SWITCH BOX COVER m x 0 18 m x 0 37 kg OUTDOOR UNIT m x 0 26 m x 0 12 m x 0 059 m x 0 022 ADDITIONAL CHARGING AM...

Page 51: ...rmal vibration or noise may be generated The transportation stay installed over the compressor leg for protecting the unit during transport must be removed Proceed as shown in the figure and procedure...

Page 52: ...ns of outdoor units 54 15 5 4 Possible options for the outdoor unit 55 15 1 Overview About the units and options This chapter contains information about Identification of the outdoor unit Where the ou...

Page 53: ...nd aimed for heat pump air to air applications These units have in single use heating capacities ranging from 25 to 50 kW and cooling capacities rating from 22 4 to 45 kW In multi combination the heat...

Page 54: ...intended for R410A use only For an overview which units are available you can consult the product catalogue for VRV IV An overview is given indicating the allowed combinations of indoor units and out...

Page 55: ...units Only the combinations in the table below are allowed Continuous heating RXYTQ18 RXYTQ10 8 RXYTQ20 RXYTQ10 10 RXYTQ22 RXYTQ10 12 RXYTQ24 RXYTQ12 12 RXYTQ26 RXYTQ14 12 RXYTQ28 RXYTQ14 14 RXYTQ30 R...

Page 56: ...xing box for the switch KJB111A External control adaptor DTA104A61 62 To instruct specific operation with an external input coming from a central control the external control adaptor can be used Instr...

Page 57: ...you have to open the unit Example When connecting the electrical wiring When maintaining or servicing the unit DANGER RISK OF ELECTROCUTION Do NOT leave the unit unattended when the service cover is r...

Page 58: ...nt box cover make sure that the sealing material on the lower back side of the cover is NOT caught and bent towards the inside see figure below a b c d e a Electrical component box cover b Front side...

Page 59: ...rea 729 613 929 AB AA a mm Minimum foundation a Anchor point 4 HP AA AB 8 766 992 10 16 1076 1302 Fasten the unit in place using four foundation bolts M12 It is best to screw in the foundation bolts u...

Page 60: ...iping 78 17 3 2 Checking refrigerant piping General guidelines 79 17 3 3 Checking refrigerant piping Setup 80 17 3 4 To perform a leak test 80 17 3 5 To perform vacuum drying 81 17 3 6 To insulate the...

Page 61: ...polyethylene foam as insulation material with a heat transfer rate between 0 041 and 0 052 W mK 0 035 and 0 045 kcal mh C with a heat resistance of at least 120 C Insulation thickness Ambient tempera...

Page 62: ...6 12 7 420 x 640 15 9 640 x 920 34 9 19 1 920 41 3 Example Downstream capacity for E capacity index of unit 1 Downstream capacity for D capacity index of unit 1 capacity index of unit 2 E Piping betw...

Page 63: ...ess of the refrigerant piping shall comply with the applicable legislation The minimal pipe thickness for R410A piping must be in accordance with the table below Pipe mm Minimal thickness t mm 6 4 9 5...

Page 64: ...of all the indoor units connected below the refnet header Indoor unit capacity index 2 pipes 200 KHRQ22M29H 200 x 290 290 x 640 KHRQ22M64H a 640 KHRQ22M75H a If the pipe size above the refnet header...

Page 65: ...door and outdoor units a If the system capacity is 16 HP re read the first outdoor branch as seen from the indoor unit b Assume equivalent piping length of refnet joint 0 5 m and refnet header 1 m for...

Page 66: ...refnet joint and refnet header Example 2 3 a b 1 2 3 4 5 6 7 8 c d e f g h i t u r s H1 H3 H2 Multi outdoor Branch with refnet header Example 3 r s u t With standard multi layout Indoor unit Refnet jo...

Page 67: ...it and indoor unit 462 Dedicated setting on outdoor unit is required see 2 49 in 19 2 8 Mode 2 Field settings 4107 In case the outdoor location is lower than indoor extension is possible up till 90 m...

Page 68: ...rd size Sizes bigger than the size up size are NOT allowed But even if you use the standard size you can increase the maximum allowable length after the first branch if all other conditions are met Ex...

Page 69: ...p valve and the piping between outdoor units as shown in the 4 correct possibilities of the figure below a b b b a b b b a b a b a b a a a 200 mm a To indoor unit b Oil collects to the outmost outdoor...

Page 70: ...ake sure the outdoor and indoor units are mounted Connecting the refrigerant piping involves Routing and connecting the refrigerant piping to the outdoor unit Protecting the outdoor unit against conta...

Page 71: ...them directly into the environment Use a vacuum pump to evacuate the installation Only use phosphoric acid deoxidised seamless copper NOTICE After all the piping has been connected make sure there is...

Page 72: ...g with protective tape to prevent damage 17 2 5 To connect the refrigerant piping to the outdoor unit INFORMATION All local inter unit piping are field supplied except the accessory pipes NOTICE Preca...

Page 73: ...aution label NOT allowed Allowed Make sure that the total length of the piping connected to the joint is absolute straight for more than 500 mm Only if a straight field piping of more than 120 mm is c...

Page 74: ...through the front a a Close the areas marked with When the piping is routed from the front panel Only use clean pipes Hold the pipe end downwards when removing burrs Cover the pipe end when inserting...

Page 75: ...rine it will deteriorate the refrigerant oil ALWAYS protect the surrounding surfaces e g insulation foam from heat when brazing 17 2 10 Using the stop valve and service port To handle the stop valve T...

Page 76: ...the stop valve cap NOTICE Pay attention that mentioned torque range is applicable for opening 19 1 25 4 mm stop valves only To close the stop valve 1 Remove the stop valve cover 2 Insert a hexagon wre...

Page 77: ...10 15 9 14 16 6 mm 19 1 19 21 8 mm 25 4 17 2 11 To remove the spun pipes WARNING Any gas or oil remaining inside the stop valve may blow off the spun piping If these instructions are NOT followed corr...

Page 78: ...ut before continuing with the connection of the field piping in case the recovery was not complete 17 3 Checking the refrigerant piping 17 3 1 About checking the refrigerant piping Refrigerant piping...

Page 79: ...ove all moisture air or nitrogen in the refrigerant piping If there is a possibility of moisture being present in the refrigerant piping for example water may have entered the piping first carry out t...

Page 80: ...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 field piping valves open as well Refer to the indoor...

Page 81: ...test and vacuum drying should be done before the power supply is set to the unit If not see 17 3 1 About checking the refrigerant piping 4 78 for more information To remove all moisture from the syste...

Page 82: ...y Minimum thickness 30 C 75 to 80 RH 15 mm 30 C 80 RH 20 mm If there is a possibility that condensation on the stop valve might drip down into the indoor unit through gaps in the insulation and piping...

Page 83: ...ront panel attached the unit cannot judge correctly whether it is operating properly or not NOTICE In case of maintenance and the system outdoor unit field piping indoor units does not contain any ref...

Page 84: ...kg 105 CR 130 0 5 kg 1 5 kg 30 m 50 CR 70 0 kg 1 kg 70 CR 85 0 3 kg 0 5 kg 1 5 kg 85 CR 105 0 7 kg 1 kg 2 kg 105 CR 130 1 2 kg 1 5 kg a Piping length is considered the distance from the outdoor unit...

Page 85: ...charging refrigerant Step 1 Calculate additional refrigerant charge amount R kg Refrigerant overcharge happened recover refrigerant to reach R Q Step 2 Open valves C and B to the liquid line Execute...

Page 86: ...op valves R Q Continuation of previous page p p R410A d A 17 4 5 To charge refrigerant Follow the steps as described below Pre charging refrigerant 1 Calculate the additional amount of refrigerant to...

Page 87: ...nifold connection to the liquid line and perform steps 4 8 INFORMATION If the total additional refrigerant amount was reached in step 3 by pre charging only record the amount of refrigerant that was a...

Page 88: ...all the precautions mentioned in 19 Configuration 4 100 and 20 Commissioning 4118 into account 2 Turn on the power of the indoor units and outdoor unit 3 Activate outdoor unit setting 2 20 1 to start...

Page 89: ...perature range for leak detection operation Retry when ambient conditions are satisfied Outdoor unit is out of temperature range for leak detection operation Retry when ambient conditions are satisfie...

Page 90: ...To route and fix the transmission wiring 94 18 3 To connect the transmission wiring 96 18 4 To finish the transmission wiring 97 18 5 To route and fix the power supply 97 18 6 To connect the power sup...

Page 91: ...ce redundant cable length in the unit NOTICE The distance between the high voltage and low voltage cables should be at least 50 mm NOTICE Do NOT operate the unit until the refrigerant piping is comple...

Page 92: ...switch c Earth connection d Outdoor unit e Indoor unit f User interface g Indoor power supply wiring sheathed cable 230 V h Transmission wiring sheathed cable 16 V i Outdoor power supply wiring sheath...

Page 93: ...nch a knockout hole hit on it with a hammer After knocking out the holes we recommend removing any burrs and paint the edges and areas around the holes using repair paint to prevent rusting When passi...

Page 94: ...unit according to the table above multiply the result by 1 1 and select the next higher recommended fuse capacity Example Combining the RXYTQ30 by using the RXYTQ8 RXYTQ10 and RXYTQ12 Minimum circuit...

Page 95: ...bility 2 a Fix to pipe insulation with tie wraps c Tie wrap Fix to factory mounted low voltage wiring d Tie wrap a Knockout hole has to be removed Close the hole to avoid small animals or dirt from en...

Page 96: ...oor unit installation F1 F2 F1 F2 Q1 Q2 Q1 Q2 A1P d d e f b a c Q1 Q2 a Unit A master outdoor unit b Unit B slave outdoor unit c Unit C slave outdoor unit d Master slave transmission Q1 Q2 e Outdoor i...

Page 97: ...wn in figure below a b c d e a Liquid pipe b Gas pipe c Insulator d Transmission wiring F1 F2 e Finishing tape 18 5 To route and fix the power supply The power supply wiring can be routed from the fro...

Page 98: ...ion The length of the conductors between the power supply stress relief and the terminal block itself MUST be as such that the current carrying wires are tautened before the earth wire is in case the...

Page 99: ...moved Attach both cables to the power supply terminal as indicated below L1 L2 L2 N 18 7 To check the insulation resistance of the compressor NOTICE If after installation refrigerant accumulates in th...

Page 100: ...3 3 Example Automatic mode during cooling 115 19 3 4 Example Automatic mode during heating 116 19 1 Overview Configuration This chapter describes what you have to do and know to configure the system...

Page 101: ...cial operation before normal operation can restart It will be indicated in below explanations See also 19 2 4 To access mode 1 or 2 4102 19 2 5 To use mode 1 4103 19 2 6 To use mode 2 4104 19 2 7 Mode...

Page 102: ...panels except for the service cover on the electrical component box are closed while working Close the lid of the electrical component box firmly before turning on the power 19 2 4 To access mode 1 o...

Page 103: ...to the default situation INFORMATION If you get confused in the middle of the process push BS1 to return to the default situation no indication on 7 segment displays blank refer to 19 2 4 To access mo...

Page 104: ...BS2 Accessing the selected setting s value is done by pushing BS3 1 time To quit and return to the initial status Press BS1 Changing the value of the selected setting in mode 2 Once mode 2 is selected...

Page 105: ...ter slave 1 or slave 2 are decided by the unit s logic The master unit should be used to input field settings in mode 2 1 0 Description No indication Undefined situation 0 Outdoor unit is master unit...

Page 106: ...nt to check if the total number of indoor units which are installed match the total number of indoor units which are recognised by the system In case there is a mismatch it is recommended to check the...

Page 107: ...l Heat selector 2 0 Description 0 default Each individual outdoor unit can select Cool Heat operation by Cool Heat selector if installed or by defining master indoor user interface see setting 2 83 an...

Page 108: ...nto your system can be found in chapter 17 4 2 About charging refrigerant 483 2 20 Description 0 default Deactivated 1 Activated To stop the manual additional refrigerant charge operation when the req...

Page 109: ...eeds to be running under low noise operation conditions when an external signal is sent to the unit this setting defines the level of low noise that will be applied This setting will only be effective...

Page 110: ...n an external signal is sent to the unit this setting defines the level power consumption limitation that will be applied for step 2 The level is according to the table 2 31 Power consumption limitati...

Page 111: ...ving and optimum operation 4111 19 2 9 To connect the PC configurator to the outdoor unit X 2 7 A a b c 2 3 4 5 H J S T X27A A1P a PC b Cable EKPCCAB c Outdoor unit main PCB 19 3 Energy saving and opt...

Page 112: ...ncy E g when your system is operating in heating you do not need as much heating under high outdoor ambient temperatures e g 15 C as under low outdoor ambient temperatures e g 5 C Using this idea the...

Page 113: ...eration the condense temperature is allowed to go up to 49 C on temporary base depending on the situation When the request from the indoor units becomes more moderate the system will eventually go to...

Page 114: ...emporary base depending on the situation In case of heating operation the condense temperature is allowed to go up to 46 C on temporary base depending on the situation When the request from the indoor...

Page 115: ...A Actual load curve B Virtual load curve initial capacity automatic mode C Virtual target value initial evaporation temperature value automatic mode D Required evaporation temperature value E Load fa...

Page 116: ...c 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 automatic mode D Design temperature E Load fa...

Page 117: ...19 Configuration Installer and user reference guide 117 RXYTQ VRV IV heat pump for high ambient temperatures 4P561157 1B 2021 11 E Quick F Powerful...

Page 118: ...pletion of the test run 122 20 7 Operating the unit 122 20 1 Overview Commissioning After installation and once the field settings are defined the installer is obliged to verify correct operation Ther...

Page 119: ...lation and operation instructions as described in the installer and user reference guide Installation Check that the unit is properly installed to avoid abnormal noises and vibrations when starting up...

Page 120: ...attached to the rear side of the front cover Installation date and field setting Be sure to keep record of the installation date on the sticker on the rear of the upper front panel according to EN6033...

Page 121: ...t display will indicate and the indication Test operation and Under centralised control will display on the user interface of indoor units Steps during the automatic system test run procedure Step Des...

Page 122: ...orrecting actions as explained in the malfunction code table Carry out the test operation again and confirm that the abnormality is properly corrected INFORMATION Refer to the installation manual of t...

Page 123: ...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 th...

Page 124: ...22 2 1 To use vacuum mode 125 22 2 2 To recover refrigerant 126 22 1 Maintenance safety precautions DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING NOTICE Risk of electrostatic discharge...

Page 125: ...the wiring diagram labelled on the back of the electrical component box cover Pay attention to the fan It is dangerous to inspect the unit while the fan is running Make sure to turn off the main switc...

Page 126: ...e If you want to pump down the system and there is a leak in the refrigerant circuit Do NOT use the unit s automatic pump down function with which you can collect all refrigerant from the system into...

Page 127: ...The malfunction code which is displayed on the outdoor unit will indicate a main malfunction code and a sub code The sub code indicates more detailed information about the malfunction code The malfunc...

Page 128: ...refrigerant amount recharge unit Check the user interface s display or transmission wiring between the outdoor unit and the indoor unit Electronic expansion valve malfunction main Y1E A1P X21A Check c...

Page 129: ...circuit A1P X19A Check connection on PCB or actuator Compressor casing temperature sensor malfunction R8T short circuit A1P X19A Check connection on PCB or actuator Compressor casing temperature sens...

Page 130: ...0A X28A X40A Check connection Transmission outdoor unit inverter FAN1 transmission trouble A1P X20A X28A X40A Check connection Transmission outdoor unit inverter FAN2 transmission trouble A1P X20A X28...

Page 131: ...ndoor units are connected to F1 F2 line Bad wiring between outdoor and indoor units Check indoor unit amount and total capacity connected System mismatch Wrong type of indoor units combined R410A R407...

Page 132: ...the indoor unit are not obstructed Freeze up prevention indoor unit Close valve A immediately Push BS1 to reset Retry autocharge procedure Automatic charging nearly finished Prepare for autocharge sto...

Page 133: ...ratures 4P561157 1B 2021 11 24 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 legisl...

Page 134: ...5 2 Piping diagram Outdoor unit 136 25 3 Wiring diagram Outdoor unit 137 25 1 Service space Outdoor unit Make sure the space around the unit is adequate for servicing and the minimum space for air inl...

Page 135: ...uction side In case of an installation site where sides A B C D have obstacles the wall heights of sides A C have no impact on service space dimensions Refer to the figure above for impact of wall hei...

Page 136: ...way valve sub Y5S f Accumulator q Electrical component box g Expansion valve main Y1E r Service port refrigerant charge h Expansion valve subcool heat exchanger Y2E s Stop valve liquid i Expansion val...

Page 137: ...oil1 Y3S c Heat exchanger n Solenoid valve oil2 Y4S d Fan o 4 way valve main Y1S e Fan motor M1F M2F p 4 way valve sub Y5S f Accumulator q Electrical component box g Expansion valve main Y1E r Servic...

Page 138: ...PH 7 Only for RYYQ model 8 Only for RYYQ RYMQ model 9 For 8 12 HP Connector X1A M1F is white connector X2A M2F is red 9 For 14 20 HP Colours see below 10 Colours see below Symbols Field wiring Termina...

Page 139: ...ic relay Y3S K11R A1P Magnetic relay Y5S L1R Reactor M1C Motor compressor M1F Motor fan PS A1P A3P Switching power supply Q1DI Earth leakage circuit breaker field supply Q1LD A1P Earth current detecto...

Page 140: ...oil 1 Y5S Solenoid valve subcool Z C Noise filter ferrite core Z F A2P A5P Noise filter with surge absorber Connectors for optional accessories X10A Connector drainpan heater X37A Connector power ada...

Page 141: ...M1F M2F Motor fan PS A1P A3P A6P Switching power supply Q1DI Earth leakage circuit breaker field supply Q1LD A1P Earth current detector field supply R24 A4P A7P Resistor current sensor R300 A3P A6P Re...

Page 142: ...nsion valve sub cool Y3E Electronic expansion valve liquid cooling Y4E Electronic expansion valve storage vessel Y1S Solenoid valve main Y2S Solenoid valve accumulator oil return Y3S Solenoid valve oi...

Page 143: ...roduct 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 in...

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