Daikin VRV IV-S RXYSQ4T8VB Series User Manual Download

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Installer and user reference guide

VRV IV-S system air conditioner

RXYSQ4T8VB(*)
RXYSQ5T8VB(*)
RXYSQ6T8VB(*)

RXYSQ4T8YB(*)
RXYSQ5T8YB(*)
RXYSQ6T8YB(*)

Summary of Contents for VRV IV-S RXYSQ4T8VB Series

Page 1: ...Installer and user reference guide VRV IV S system air conditioner RXYSQ4T8VB RXYSQ5T8VB RXYSQ6T8VB RXYSQ4T8YB RXYSQ5T8YB RXYSQ6T8YB ...

Page 2: ...dry program WITHOUT cool heat changeover remote control switch 29 8 3 3 To use the dry program WITH cool heat changeover remote control switch 29 8 4 Adjusting the air flow direction 30 8 4 1 About the air flow flap 30 8 5 Setting the master user interface 31 8 5 1 About setting the master user interface 31 8 5 2 To designate the master user interface 31 9 Energy saving and optimum operation 32 9 ...

Page 3: ... the units and options 52 16 2 Identification 52 16 2 1 Identification label Outdoor unit 52 16 3 About the outdoor unit 53 16 4 System layout 53 16 5 Combining units and options 54 16 5 1 About combining units and options 54 16 5 2 Possible combinations of indoor units 54 16 5 3 Possible options for the outdoor unit 54 17 Unit installation 56 17 1 Preparing the installation site 56 17 1 1 Install...

Page 4: ...ce requirements 93 19 2 To connect the electrical wiring to the outdoor unit 94 19 3 To finish the transmission wiring 97 19 4 To check the insulation resistance of the compressor 98 20 Configuration 99 20 1 Overview Configuration 99 20 2 Making field settings 99 20 2 1 About making field settings 99 20 2 2 To access the field setting components 100 20 2 3 Field setting components 100 20 2 4 To ac...

Page 5: ...4P482277 1B 2020 10 24 2 Precautions when troubleshooting 122 24 3 Solving problems based on error codes 122 24 3 1 Error codes Overview 123 25 Disposal 125 26 Technical data 126 26 1 Service space Outdoor unit 127 26 2 Piping diagram Outdoor unit 129 26 3 Wiring diagram Outdoor unit 130 27 Glossary 134 ...

Page 6: ...n 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 step by step instructions and background information for basic and advanced usage Format Digital files on http www daikineurope com support and manuals product information Latest revisions of the suppli...

Page 7: ...sult 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 Symbol Explanation Before installation read the installation and operation manual and the wiring instruction sheet Before performing maintenance and service tasks read the service manual For more informa...

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

Page 9: ...ient space around the unit for servicing and air circulation Make sure the installation site withstands the weight and vibration 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 atmospheres In places where there is machinery that emits electromagnetic waves El...

Page 10: ...mpressor does NOT have to operate WARNING ALWAYS recover the refrigerant Do 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 gas leak detection NOTICE To avoid compressor breakdown do NOT charge more than the specified amount of refrigerant When the r...

Page 11: ...ant 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 touching electrical parts Disconnect the power supply for more than 10 minutes and measure the voltage at the terminals of main circuit capacitors or electrical components before servicing The voltage MUST...

Page 12: ...g 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 current carrying cables first before separating the earth connection The length of the conductors between the power supply stress relief and the terminal block itself must be as such that the curren...

Page 13: ...s 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 there exists the possibility of reversed phase after a momentary black out and the power goes on and off while the product is operating attach a reversed phase protection circuit locally Running the pro...

Page 14: ...ed 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 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 WARN...

Page 15: ...arth 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 cable ties so that the cables do NOT come in contact with sharp edges or piping particularly on the high pressure side Do NOT use taped wires stranded conductor wires extension cords or connections from a s...

Page 16: ... 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 relief CAUTION Do NOT perform the test operation while working on the indoor units When performing the test operation NOT only the outdoor unit but the connected indoor unit will operate as well Working on...

Page 17: ...For the user Installer and user reference guide 17 RXYSQ4 6T8V YB VRV IV S system air conditioner 4P482277 1B 2020 10 For the user ...

Page 18: ...s with reduced physical sensory or 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 their safety Children MUST NOT play with the appliance Cleaning and user maintenance MUST NOT be carried out by children without supervision WARNING To prevent electr...

Page 19: ...ymbol 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 metal above a certain concentration Possible chemical symbols are Pb lead 0 004 Waste batteries must be treated at a specialized treatment facility for reuse By ensuring waste batteries are disposed of cor...

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 at high speed it will cause injury CAUTION Pay attention to the fan It is dangerous to inspect the unit while the fan is running Be sure to turn off the main switch before executing any maintenance ta...

Page 21: ...ied service personnel confirm that the point of leakage 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 circumstances may cause breakage electric shock or fire Contact your dealer WARNING The refrigerant in the system is safe and normally does not leak If the ref...

Page 22: ...tion of VRV DX and RA DX indoor units is not allowed Combination of RA DX and AHU indoor units is not allowed Combination of RA DX and aircurtain indoor units is not allowed In general following type of indoor units can be connected to a VRV heat pump system not exhaustive list depending on outdoor unit model and indoor unit model combinations VRV direct expansion indoor units air to air applicati...

Page 23: ...tioner 4P482277 1B 2020 10 d User interface dedicated depending on indoor unit type e BP box required to connect Residential Air RA or Sky Air SA direct expansion DX indoor units f Residential Air RA direct expansion DX indoor units g User interface wireless dedicated depending on indoor unit type ...

Page 24: ...s inside 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 functions of the system Detailed information on required actions to achieve certain functions can be found in the dedicated installation and operation manual of the indoor unit Refer to the operation m...

Page 25: ... when using a room fumigation type insecticide Chemicals could collect in the unit and endanger the health of people who are hypersensitive to chemicals NOTICE Be sure to turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor This operation manual is for the following systems with standard control Before initiating operation ...

Page 26: ...aster user interface 31 8 5 2 To designate the master user interface 31 8 1 Operation range Use the system in the following temperature and humidity ranges for safe and effective operation Cooling Heating Outdoor temperature 5 46 C DB 20 21 C DB 20 15 5 C WB Indoor temperature 21 32 C DB 14 25 C WB 15 27 C DB Indoor humidity 80 a a To avoid condensation and water dripping out of the unit If the te...

Page 27: ... indoor unit side will temporarily drop until defrosting is completed After defrosting the unit will regain its full heating capacity The indoor unit will stop fan operation the refrigerant cycle will reverse and energy from inside the building will be used to defrost the outdoor unit coil The indoor unit will indicate defrost operation on the display Hot start In order to prevent cold air from bl...

Page 28: ...operation b COOL HEAT CHANGEOVER SWITCH Set the switch to for cooling or to for heating Note In case a cool heat changeover remote control switch is used the position of DIP switch 1 DS1 1 on the main PCB needs to be switched to the ON position To start 1 Select operation mode with the cool heat changeover switch as follows Cooling operation 1 1 Heating operation 1 1 Fan only operation 1 2 Press t...

Page 29: ...ation mode selector button on the user interface several times and select program dry operation 2 Press the ON OFF button of the user interface Result The operation lamp lights up and the system starts operating 3 Press the air flow direction adjust button only for double flow multi flow corner ceiling suspended and wall mounted Refer to 8 4 Adjusting the air flow direction 430 for details To stop...

Page 30: ...r interface 8 4 1 About the air flow flap Double flow multi flow units Corner units Ceiling suspended units Wall mounted units For the following conditions a micro computer controls the air flow direction which may be different from the display Cooling Heating When the room temperature is lower than the set temperature When starting operation When the room temperature is higher than the set temper...

Page 31: ...c f e b a g f e a VRV IV S Heat pump outdoor unit b Refrigerant piping c VRV direct expansion DX indoor unit d User interface dedicated depending on indoor unit type e BP box required to connect Residential Air RA or Sky Air SA direct expansion DX indoor units f Residential Air RA direct expansion DX indoor units g User interface wireless dedicated depending on indoor unit type When the system is ...

Page 32: ...g 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 to Maintenance in the indoor unit manual Keep the indoor unit and user interface at least 1 m away from televisions radios stereos and other similar equipment Failing to do so may cause static or distorted pictures Do NOT place items under t...

Page 33: ...he delivered capacity and increasing the system s efficiency Hi sensible economic cooling heating The refrigerant temperature is set higher lower cooling heating compared to basic operation The focus under high sensible mode 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 operati...

Page 34: ...eration 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 diluted neutral detergent squeeze it well and wipe the panel clean Wipe it with another dry cloth In this chapter 10 1 Maintenance after a long stop period 34 10 2 Maintenance before a long stop period 35 10 3 About the refrigerant 35 10 4 ...

Page 35: ...sition 10 3 About the refrigerant This product contains fluorinated greenhouse gases Do NOT vent gases into the atmosphere Refrigerant type R410A 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 equivalent Formula to calculate the quantity in CO2 equivalent to...

Page 36: ...ble remove reinstall or repair the unit yourself as incorrect dismantling or installation may cause an electric shock or fire Contact your dealer In case of accidental refrigerant leaks make sure there are no naked flames The refrigerant itself is entirely safe non toxic and non combustible but it will generate toxic gas when it accidentally leaks into a room where combustible air from fan heaters...

Page 37: ...t 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 the air The machine is started and stopped frequently or operation time is long sites with 24 hour air conditioning Recommended replacement cycle of wear parts Component Inspection cycle Maintenance c...

Page 38: ...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 none of the above mentioned malfunctions is evident investigate the system in accordance with the following procedures Malfunction Measure If the system does not operate at all Check if there is no power f...

Page 39: ... 3 Symptom Fan operation is possible but cooling and heating do not work 42 11 2 4 Symptom The fan speed does not correspond to the setting 42 11 2 5 Symptom The fan direction does not correspond to the setting 42 11 2 6 Symptom White mist comes out of a unit Indoor unit 42 11 2 7 Symptom White mist comes out of a unit Indoor unit outdoor unit 42 11 2 8 Symptom The user interface reads U4 or U5 an...

Page 40: ...ge air thermistor malfunction indoor Movement detector or floor temperature sensor malfunction indoor User interface thermistor malfunction indoor PCB malfunction outdoor High pressure switch was activated Low pressure malfunction outdoor Compressor lock detection outdoor Fan motor malfunction outdoor Electronic expansion valve malfunction outdoor Discharge temperature malfunction outdoor Abnormal...

Page 41: ...nction INV voltage power shortage System test run not yet executed Faulty wiring indoor outdoor Abnormal user interface indoor communication Faulty wiring to outdoor outdoor Abnormal main sub user interface communication System mismatch Wrong type of indoor units combined Indoor unit malfunction Connection malfunction over indoor units or type mismatch Centralised address duplication Malfunction i...

Page 42: ... maximally until this process is finished 11 2 4 Symptom The fan speed does not correspond to the setting The fan speed does not change even if the fan speed adjustment button is pressed During heating operation when the room temperature reaches the set temperature the outdoor unit goes off and the indoor unit changes to whisper fan speed This is to prevent cold air blowing directly on occupants o...

Page 43: ... make this noise A low sah choro choro sound is heard while the indoor unit is stopped When another indoor unit is in operation this noise is heard In order to prevent oil and refrigerant from remaining in the system a small amount of refrigerant is kept flowing 11 2 10 Symptom Noise of air conditioners Indoor unit outdoor unit A continuous low hissing sound is heard when the system is in cooling ...

Page 44: ...ning in the compressor The unit will stop after 5 to 10 minutes 11 2 16 Symptom The inside of an outdoor unit is warm even when the unit has stopped This is because the crankcase heater is warming the compressor so that the compressor can start smoothly 11 2 17 Symptom Hot air can be felt when the indoor unit is stopped Several different indoor units are being run on the same system When another u...

Page 45: ...ller and user reference guide 45 RXYSQ4 6T8V YB VRV IV S system air conditioner 4P482277 1B 2020 10 12 Relocation Contact your dealer for removing and reinstalling the total unit Moving units requires technical expertise ...

Page 46: ...is 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 parts MUST comply with applicable legislation Units MUST be treated at a specialised treatment facility for reuse recycling and recovery ...

Page 47: ... 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 Eco Design Ener LOT 21 click Generate your data Result You are directed to the Seasonal efficiency LOT 21 webpage 4 Follow the instructions on the webpage to select the correct unit Result When the selection is done th...

Page 48: ...For the installer Installer and user reference guide 48 RXYSQ4 6T8V YB VRV IV S system air conditioner 4P482277 1B 2020 10 For the installer ...

Page 49: ... of reclaimed refrigerant in VRV units produced and sold in Europe For more information about the countries that are in scope visit http www daikin eu loop by daikin 15 2 Overview About the box This chapter describes what you have to do after the box with the outdoor unit is delivered on site Keep the following in mind At delivery the unit MUST be checked for damage Any damage MUST be reported imm...

Page 50: ...r 4P482277 1B 2020 10 15 3 Outdoor unit 15 3 1 To unpack the outdoor unit 2 1 15 3 2 To handle the outdoor unit CAUTION To avoid injury do NOT touch the air inlet or aluminium fins of the unit Carry the unit slowly as shown Forklift As long as the unit remains on its pallet you can also use a forklift ...

Page 51: ...ce cover See To open the outdoor unit 462 2 Remove the accessories a 1 b 1 c 1 d 1 e f 1 1 g 1 a General safety precautions b Outdoor unit installation and operation manual c Fluorinated greenhouse gases label d Multilingual fluorinated greenhouse gases label e Gas piping accessory 1 copper gasket only for RXYSQ6 f Gas piping accessory 2 only for RXYSQ6 g Gas piping accessory 3 only for RXYSQ6 ...

Page 52: ...4 16 5 3 Possible options for the outdoor unit 54 16 1 Overview About the units and options This chapter contains information about Identification of the outdoor unit Where the outdoor unit fits in the system layout With which indoor units and options you can combine the outdoor units 16 2 Identification NOTICE When installing or servicing several units at the same time make sure NOT to switch the...

Page 53: ...0 kW Cooling 12 1 15 5 kW Ambient design temperature Heating 20 15 5 C WB Cooling 5 46 C DB 16 4 System layout NOTICE Design of the system must not be done at temperatures below 15 C INFORMATION Not all combinations of indoor units are allowed for guidance see Possible combinations of indoor units 454 g d d c c f e b a g f e a VRV IV S Heat pump outdoor unit b Refrigerant piping c VRV direct expan...

Page 54: ...mentioned in the technical engineering data 16 5 2 Possible combinations of indoor units In general following type of indoor units can be connected to a VRV heat pump system The list is non exhaustive and is depending on both outdoor unit model and indoor unit model combinations VRV direct expansion DX indoor units air to air applications SA RA Sky Air Residential Air direct expansion DX indoor un...

Page 55: ...r cable EKCHSC With optional fixing box for the switch KJB111A 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 Instructions group or individual can be instructed for low noise operation and power consumption limitation operation The external control adapter has to be installed...

Page 56: ...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 17 1 1 Installation site requirements of the outdoor unit INFORMATION Also read the following requirements General installation site requirements See the General safety precautions chapter Service space requirements See the Technical data ...

Page 57: ... where children play Do NOT install the unit in the following places Sound sensitive areas e g near a bedroom so that the operation noise will cause no trouble Note If the sound is measured under actual installation conditions the measured value might be higher than the sound pressure level mentioned in Sound spectrum in the data book due to environmental noise and sound reflections In places wher...

Page 58: ...This may result in deterioration of the operational capacity frequent frost acceleration in heating operation disruption of operation due to decrease of low pressure or increase of high pressure a broken fan if a strong wind blows continuously on the fan it may start rotating very fast until it breaks It is recommended to install a baffle plate when the air outlet is exposed to wind Turn the air o...

Page 59: ...g the unit in heating in a low outdoor 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 20 10 15 20 2527 30 TAI C DB a Warming up operation range b Operation range TAI Ambient indoor temperature TAO Ambient outdoor temperature If the unit is selected ...

Page 60: ... humanly occupied space in to which it could leak The unit of measurement of the concentration is kg m3 the weight in kg of the refrigerant gas in 1 m3 volume of the occupied space Compliance to the local applicable regulations and standards for the maximum allowable concentration level is required According to the appropriate European Standard the maximum allowed concentration level of refrigeran...

Page 61: ...r each must be equivalent in size to 0 15 or more of the floor area b Room division 3 Calculate the refrigerant density using the results of the calculations in steps 1 and 2 above If the result of the above calculation exceeds the maximum concentration level a ventilation opening to the adjacent room shall be made Formula F G H F Total volume of refrigerant in the refrigerant system G Size m3 of ...

Page 62: ...ning or servicing the unit DANGER RISK OF ELECTROCUTION Do NOT leave the unit unattended when the service cover is removed 17 2 2 To open the outdoor unit DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING 3 45 90 4 2 1 1 17 2 3 To close the outdoor unit NOTICE When closing the outdoor unit cover make sure that the tightening torque does NOT exceed 4 1 N m 1 3 2 4 1 ...

Page 63: ...nting the outdoor unit INFORMATION Also read the precautions and requirements in the following chapters General safety precautions Preparation 17 3 3 To provide the installation structure Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise Fix the unit securely by means of foundation bolts in accordance with the foundation drawin...

Page 64: ... is proper drainage in order to avoid ice accumulation Prepare a water drainage channel around the foundation to drain waste water away from the unit Avoid drain water flowing over the footpath so that it does NOT become slippery in case of ambient freezing temperatures If you install the unit on a frame install a waterproof plate within 150 mm of the bottom side of the unit in order to prevent wa...

Page 65: ...tdoor unit from falling over In case the unit is installed in places where strong wind can tilt the unit take following measure 1 Prepare 2 cables as indicated in the following illustration field supply 2 Place the 2 cables over the outdoor unit 3 Insert a rubber sheet between the cables and the outdoor unit to prevent the cables from scratching the paint field supply 4 Attach the ends of the cabl...

Page 66: ...ant piping Setup 81 18 3 4 To perform a leak test 81 18 3 5 To perform vacuum drying 82 18 3 6 To insulate the refrigerant piping 82 18 4 Charging refrigerant 83 18 4 1 About charging refrigerant 83 18 4 2 Precautions when charging refrigerant 83 18 4 3 To determine the additional refrigerant amount 84 18 4 4 To charge refrigerant 85 18 4 5 Error codes when charging refrigerant 87 18 4 6 To fix th...

Page 67: ...To select the piping size Determine the proper size using the following tables and reference figure only for indication INFORMATION Combination of VRV DX and RA DX indoor units is not allowed Combination of RA DX and AHU indoor units is not allowed Combination of RA DX and aircurtain indoor units is not allowed INFORMATION If you install RA DX indoor units you have to configure field setting 2 38 ...

Page 68: ...y decrease e d b c a a Outdoor unit b Main gas pipe increase piping size if length b d 90 m c First refrigerant branch kit d Piping between indoor unit and first refrigerant branch kit e Furthest indoor unit Outdoor unit capacity type HP Piping outer diameter size mm Gas pipe Liquid pipe Standard Size up 4 5 15 9 19 1 9 5 6 19 1 22 2 B Piping between refrigerant branch kits Choose from the followi...

Page 69: ...sing refnet joints at the first branch counted from the outdoor unit side choose from the following table in accordance with the capacity of the outdoor unit Example Refnet joint A B 1 Outdoor unit capacity type HP Refrigerant branch kit 4 6 KHRQ22M20T Refnet joints at other branches For refnet joints other than the first branch select the proper branch kit model based on the total capacity index ...

Page 70: ...e f g h i j k l m Limit 300 m 140 m Minimum length outdoor first refrigerant branch kit Example 2 Limit a N A 5 m Maximum length first branch kit indoor unit Example 1 1 unit 8 b c d e f g p Limit Example 1 2 unit 6 b h Limit Example 1 2 unit 8 i k Limit Example 1 3 unit 8 i Limit Example 2 unit 18 b m Limit 40 m 40 m Maximum length outdoor BP Example 2 BP3 a b Limit N A 55 m Minimum and maximum l...

Page 71: ...d e f i k j g h A B 1 2 3 4 5 6 7 8 H1 H2 Example 1 3 a c b d e f i g h 1 2 3 4 5 6 7 8 H1 H2 Refnet joint Refnet header BP box 1 8 VRV DX indoor units 11 18 RA DX indoor units 18 2 Connecting the refrigerant piping 18 2 1 About connecting the refrigerant piping Before connecting the refrigerant piping Make sure the outdoor and indoor units are mounted Typical workflow Connecting the refrigerant p...

Page 72: ...ng into the system Install the piping so that the flare is NOT subjected to mechanical stress Protect the piping as described in the following table to prevent dirt liquid or dust from entering the piping Use caution when passing copper tubes through walls see figure below Unit Installation period Protection method Outdoor unit 1 month Pinch the pipe 1 month Pinch or tape the pipe Indoor unit Rega...

Page 73: ...pe bending guidelines Use a pipe bender for bending All pipe bends should be as gentle as possible bending radius should be 30 40 mm or larger 18 2 5 To flare the pipe end CAUTION Incomplete flaring may cause refrigerant gas leakage Do NOT re use flares Use new flares to prevent refrigerant gas leakage Use flare nuts that are included with the unit Using different flare nuts may cause refrigerant ...

Page 74: ... the piping This film adversely affects valves and compressors in the refrigerating system and prevents proper operation Set the nitrogen pressure to 20 kPa 0 2 bar just enough so it can be felt on the skin with a pressure reducing valve 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 joi...

Page 75: ... d a b a Service port and service port cover b Stop valve c Field piping connection d Stop valve cover a b c d e a Service port b Stop valve cover c Hexagon hole d Shaft e Valve seat Do NOT apply excessive force to the stop valve Doing so may break the valve body To open close the stop valve Counterclockwise to open Clockwise to close Result The valve is now open closed To handle the stop valve co...

Page 76: ...torques Stop valve size mm Tightening torque N m turn clockwise to close Shaft Valve body Hexagonal wrench Cap valve lid Service port Ø9 5 5 4 6 6 4 mm 13 5 16 5 11 5 13 9 Ø15 9 13 5 16 5 6 mm 22 5 27 5 18 2 8 To connect the refrigerant piping to the outdoor unit NOTICE Be sure that the field installed piping does not touch other pipes the bottom panel or side panel Especially for the bottom and s...

Page 77: ... recommend to remove the burrs and paint the edges and areas around the edges using repair paint to prevent rusting When passing electrical wiring through the knockout holes wrap the wiring with protective tape to prevent damage 3 Do the following Connect the liquid pipe a to the liquid stop valve Connect the gas pipe b to the gas stop valve a b In case of RXYSQ6 Connect the gas piping accessories...

Page 78: ...m entering the system a WARNING Provide adequate measures to prevent that the unit can be used as a shelter by small animals Small animals that make contact with electrical parts can cause malfunctions smoke or fire NOTICE Make sure to open the stop valves after installing the refrigerant piping and performing vacuum drying Running the system with the stop valves closed may break the compressor 18...

Page 79: ... important that all refrigerant piping work is done before the units outdoor or indoor are powered on When the units are powered on the expansion valves will initialise This means that the valves will close NOTICE Leak test and vacuum drying of field piping and indoor units is impossible when field expansion valves are closed Method 1 Before power ON If the system has not yet been powered on no sp...

Page 80: ...tory tested for leaks Only field installed refrigerant piping needs to be checked Therefore make sure that all the outdoor unit stop valves are firmly closed before performing leak test or vacuum drying NOTICE Make sure that all field supplied field piping valves are OPEN not outdoor unit stop valves before you start leak test and vacuuming For more information on the state of the valves refer to ...

Page 81: ...ould be done before the power supply is set to the unit If not see also the flow chart earlier described in this chapter see About checking the refrigerant piping 479 18 3 4 To perform a leak test The leak test must satisfy the specifications of EN378 2 To check for leaks Vacuum leak test 1 Evacuate the system from the liquid and gas piping to 100 7 kPa 1 007 bar 5 Torr absolute for more than 2 ho...

Page 82: ...e the system for at least 2 hours to a target vacuum of 100 7 kPa 1 007 bar 5 Torr absolute 2 Check that with the vacuum pump turned off the target vacuum is maintained for at least 1 hour 3 Should you fail to reach the target vacuum within 2 hours or maintain the vacuum for 1 hour the system may contain too much moisture In that case break the vacuum by pressurising with nitrogen gas to a gauge p...

Page 83: ...ory charged with refrigerant but depending on the field piping you have to charge additional refrigerant Before charging refrigerant Make sure the outdoor unit s external refrigerant piping is checked leak test vacuum drying Typical workflow Charging additional refrigerant typically consists of the following stages 1 Determining how much you have to charge additionally 2 Charging additional refrig...

Page 84: ...ised setting 1 5 NOTICE Close the front panel before any refrigerant charge operation is executed Without the front 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 refrigerant any more e g after refrigerant reclaim operation the unit has to be charged with...

Page 85: ...ant charging process it is in case of larger systems recommended to first pre charge a portion of refrigerant through the liquid line before proceeding with the manual charging It can be skipped but charging will take longer then Pre charging refrigerant Pre charging can be done without compressor operation by connecting the refrigerant bottle to the service port of the liquid stop valve 1 Connect...

Page 86: ...ging refrigerant in manual additional refrigerant charge mode instructions Charging refrigerant in manual additional refrigerant charge mode The remaining additional refrigerant charge can be charged by operating the outdoor unit by means of the manual additional refrigerant charge mode 5 Connect as shown Make sure valve A is closed p p R410A a c d b A d a Weighing scales b Refrigerant R410A tank ...

Page 87: ...ossible by pushing BS3 The unit will stop and return to idle condition 10 Open valve A 11 Charge refrigerant until the remaining determined additional refrigerant amount is added and then close valve A 12 Press BS3 to stop the manual additional refrigerant charge mode NOTICE Make sure to open all stop valves after pre charging the refrigerant Operating with the stop valves closed will damage the c...

Page 88: ...frigerant charge e Quantity of fluorinated greenhouse gases of the total refrigerant charge expressed as tonnes CO2 equivalent f GWP Global warming potential 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 calculate the quantity in CO2 equivalent tonnes GWP value of the refriger...

Page 89: ...ng the electrical wiring typically consists of the following stages 1 Making sure the power supply system complies with the electrical specifications of the units 2 Connecting the electrical wiring to the outdoor unit 3 Connecting the electrical wiring to the indoor units 4 Connecting the main power supply 19 1 1 Precautions when connecting the electrical wiring INFORMATION Also read the precautio...

Page 90: ... 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 complete Running the unit before the piping is ready will break the compressor NOTICE If the power supply has a missing or wrong N phase equipment will break down NOTICE Do NOT install a phase advancing capac...

Page 91: ...ast 50 mm Transmission wiring The transmission wiring outside the unit should be wrapped and routed together with the field piping See Finishing the outdoor unit installation Transmission wiring specification and limits a Vinyl cords with 0 75 to 1 25 mm sheath or cables 2 core wires Maximum number of branches for unit to unit cabling 9 Maximum wiring length distance between outdoor and furthest i...

Page 92: ...d damaging the casing After making the knockout holes we recommend you remove the burrs and paint the edges and areas around the edges using repair paint to prevent rusting When passing electrical wiring through the knockout holes wrap the wiring with protective tape to prevent damage b c a a Knockout hole b Burr c Sealant etc 19 1 4 Guidelines when connecting the electrical wiring Keep the follow...

Page 93: ...iring M3 5 0 8 0 97 19 1 5 About electrical compliance Only for RXYSQ4 6_V Equipment complying with EN IEC 61000 3 12 European International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low voltage systems with input current 16 A and 75 A per phase 19 1 6 Safety device requirements Power supply wiring The power supply must be protected with ...

Page 94: ...istance between outdoor and furthest indoor unit 300 m Total wiring length sum of distances between outdoor and all indoor units 600 m a If the total transmission wiring exceeds these limits communication errors might occur 19 2 To connect the electrical wiring to the outdoor unit NOTICE Follow the wiring diagram delivered with the unit located at the inside of the service cover Make sure the elec...

Page 95: ...l board field supply NOTICE You must use shielded wire and connect the earth to the transmission terminal X2M C H SELECTOR A B C F1 F2 F1 F2 TO IN D UNIT V Y F1 F2 F1 F2 TO IND TO OUTD TO OUT D UNIT a a a Earth 4 Connect the power supply as follows 1 50 Hz 220 240 V L L N V Y X1M 3N 50 Hz 380 415 V L1 L2 L3 L1 L2 L3 N X1M a b c a Earth leakage circuit breaker b Fuse c Power supply cable 5 Fix the ...

Page 96: ...air conditioner 4P482277 1B 2020 10 V Y X1M X2M a a b a a X2M a a b X1M a a a Cable tie b Attachment plate X1M Power supply X2M Transmission wiring 6 Route the wiring through the frame and connect it to it Routing through the frame a b a b a b 2 3 1 a Power supply cable b Transmission wiring cable ...

Page 97: ...ng knockout holes Avoid damaging the casing and underlying piping After making the knockout holes we recommend to remove the burrs and paint the edges and areas around the edges using repair paint to prevent rusting When passing electrical wiring through the knockout holes wrap the wiring with protective tape to prevent damage 7 Reattach the service cover See To close the outdoor unit 462 8 Connec...

Page 98: ...p but if it is at least 1 MΩ 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 Measure the insulation resistance over the poles If Then 1 MΩ Insulation resistance is OK This procedure is finished 1 MΩ Insulation resistance is not OK Go to the next step 2 Turn ON the power and leave it on for 6 hours Result The co...

Page 99: ...mode during cooling 111 20 3 4 Example Automatic mode during heating 112 20 1 Overview Configuration This chapter describes what you have to do and know to configure the system after it is installed It contains information about Making field settings Energy saving and optimum operation INFORMATION It is important that all information in this chapter is read sequentially by the installer and that t...

Page 100: ...d setting value is possible In general normal operation can be resumed without special intervention after changing field settings Some field settings are used for special operation e g 1 time operation recovery vacuuming setting manual adding refrigerant setting etc In such a case it is required to abort the special operation before normal operation can restart It will be indicated in below explan...

Page 101: ...ng the address when the wiring is changed or when an additional indoor unit is installed 7 LEDs display The display gives feedback about the field settings which are defined as Mode Setting Value H1P Shows the mode H2P H7P Shows the settings and values represented in binary code H8P NOT used for field settings but used during initialisation Example H1P H2P H3P H4P H5P H6P H7P H1P 32 16 8 4 2 1 Des...

Page 102: ...on code on the indoor unit user interface Solve the malfunction code accordingly First check the communication wiring 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 c b a Default situation H1P OFF b Mode 1 H1P flashing c Mode 2 H1P ON BS1 Press BS1 BS1 5 s Press BS1 for at least 5 s INFORMATION If you get confused in the midd...

Page 103: ... display 1 Start from the default situation 2 Select mode 1 BS1 1 3 Select setting 5 X depends on the setting that you want to select BS2 X binary 5 4 Display the value of setting 5 there are 8 indoor units connected BS3 1 binary 8 5 Quit mode 1 BS1 1 20 2 6 To use mode 2 In mode 2 you can make field settings to configure the system Example 7 LEDs display Mode 2 You can change the value of setting...

Page 104: ...etting value number For more information and advice about the impact of settings 2 8 2 9 2 41 and 2 42 see 20 3 Energy saving and optimum operation 4108 Setting binary Value Description 2 8 Te target temperature during cooling operation 6 C default Auto 8 C 9 C 10 C 11 C 2 9 Tc target temperature during heating operation default Auto 46 C 43 C 2 12 Enable the low noise function and or power consum...

Page 105: ...s If 30 minutes was not sufficient to add the needed refrigerant amount the function can be reactivated by changing the field setting again 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 apply a setting which will open required valves in the refrigerant ...

Page 106: ...ol adaptor DTA104A61 62 If the system needs to be running under power consumption limitation conditions when an external signal is sent to the unit this setting defines the level power consumption limitation that will be applied for step 1 The level is according to the table 60 default 70 80 2 31 Power consumption limitation level step 2 via the external control adaptor DTA104A61 62 If the system ...

Page 107: ...tion codes might occur default VRV DX indoor units installed RA DX indoor units installed 2 41 Cooling comfort setting This setting is used in conjunction with setting 2 8 Eco default Mild Quick Powerful 2 42 Heating comfort setting This setting is used in conjunction with setting 2 9 Eco default Mild Quick Powerful 20 2 9 To connect the PC configurator to the outdoor unit V Y a b c X41A A1P A1P a...

Page 108: ...s in Change Cooling operation 2 8 2 Heating operation 2 9 2 Automatic The refrigerant temperature is set depending on the outdoor ambient conditions As such adjusting the refrigerant temperature to match the required load which is also related to the outdoor ambient conditions E g when your system is operating in cooling you do not need as much cooling under low outdoor ambient temperatures e g 25...

Page 109: ...porarily 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 is allowed compared to the requested refrigerant temperature in order to achieve the required room temperature very fast The overshoot is allowed from the start up moment In case of cooling operati...

Page 110: ...ild Overshoot 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 overshoot is not allowed from the start up moment The start up occurs under the condition which is defined by the operation mode above In case of cooling operation the evaporating temperature is al...

Page 111: ...ating operation 2 42 0 This setting is used in conjunction with setting 2 9 20 3 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 mode C Virtual target value initial evaporation temperature value automatic mode D Required evaporation temperature value E Load factor F Outside air temperature Te Evaporating...

Page 112: ...perature B Operation start C Operating time D Mild E Quick F Powerful 20 3 4 Example Automatic 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 automatic mode D Design temperature E Load factor F Outside air temperature Tc Condensing temperature ...

Page 113: ... reference guide 113 RXYSQ4 6T8V YB VRV IV S system air conditioner 4P482277 1B 2020 10 Quick Powerful Mild Room temperature evolution A B C D E F A Indoor unit set temperature B Operation start C Operating time D Mild E Quick F Powerful ...

Page 114: ...T insert fingers rods or other objects into the air inlet or outlet Do NOT remove the fan guard When the fan is rotating at high speed it will cause injury INFORMATION During the first running period of the unit the required power may be higher than stated on the nameplate of the unit This phenomenon is caused by the compressor that needs a continuous run time of 50 hours before reaching smooth op...

Page 115: ...device requirements 493 Be sure that neither a fuse nor a protection device has been bypassed Internal wiring Visually check the electrical component box and the inside of the unit for loose connections or damaged electrical components Pipe size and pipe insulation Be sure that correct pipe sizes are installed and that the insulation work is properly executed Stop valves Be sure that the stop valv...

Page 116: ... normal operation using the user interface Refer to the indoor unit installation manual for more details concerning the individual test run INFORMATION It may take 10 minutes to achieve a uniform refrigerant state before the compressor starts During the test operation the refrigerant running sound or the magnetic sound of a solenoid valve may become loud and the display indication may change These...

Page 117: ... 1B 2020 10 21 7 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 indoor unit the user interface of the indoor unit should be switched ON Refer to the indoor unit operation manual for more details ...

Page 118: ...roperly 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 complete documentation at the URL mentioned earlier in this manual Explain the user how to properly operate the system and what to do in case of problems Show the user what to do for the maintenance o...

Page 119: ...ut service mode operation 120 23 3 1 To use vacuum mode 121 23 3 2 To recover refrigerant 121 23 1 Maintenance safety precautions DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING NOTICE Risk of electrostatic discharge Before performing any maintenance or service work touch a metal part of the unit in order to eliminate static electricity and to protect the PCB 23 1 1 To prevent electri...

Page 120: ... to the wiring diagram labelled on the back of the service 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 switch and to remove the fuses from the control circuit located in the outdoor unit 23 2 Checklist for yearly maintenance of the outdoor unit Check the following at least once a year Heat exchanger The heat exchanger o...

Page 121: ...o stop vacuuming mode 23 3 2 To recover refrigerant This should be done with a refrigerant recovery unit Follow the same procedure as for vacuuming method DANGER RISK OF EXPLOSION Pump down Refrigerant leakage 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 syst...

Page 122: ...was activated stop the unit and find out why the safety device 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 dealer DANGER RISK OF ELECTROCUTION WARNING Prevent hazards due to inadvertent resetting of the thermal cut out power to this appliance MUST N...

Page 123: ...uired amount of refrigerant from the piping length and add an adequate amount of refrigerant Electronic expansion valve malfunction Y1E A1P X21A Y3E A1P X22A Check connection on PCB or actuator The stop valve of an outdoor unit is left closed Insufficient refrigerant Open the stop valve on both the gas and liquid side Check if the additional refrigerant charge has been finished correctly Recalcula...

Page 124: ...ystem test run not yet executed system operation not possible Execute system test run No power is supplied to the outdoor unit Check if the power wiring for the outdoor unit is connected correctly Faulty wiring to Q1 Q2 Check Q1 Q2 wiring System mismatch Wrong type of indoor units combined R410A R407C RA etc Indoor unit malfunction Check if other indoor units have malfunction and confirm indoor un...

Page 125: ...ioner 4P482277 1B 2020 10 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 legislation Units MUST be treated at a specialised treatment facility for reuse recycling and recovery ...

Page 126: ... data A subset of the latest technical data is available on the regional Daikin website publicly accessible The full set of latest technical data is available on the Daikin Business Portal authentication required In this chapter 26 1 Service space Outdoor unit 127 26 2 Piping diagram Outdoor unit 129 26 3 Wiring diagram Outdoor unit 130 ...

Page 127: ...HB HD HD HU 100 1000 1000 500 HU HD HU 200 1000 1000 500 HD HU 200 1700 1000 500 HU a b 100 100 c d e eB eD A B C D E HB HD A B C 200 300 1000 A B C E 200 300 1000 1000 500 D 1000 D E 1000 1000 500 B D HD HU 300 1000 HD HU 250 1500 HU HD HU 300 1500 B D E HB HD HB HU 300 1000 1000 500 HU HB HU 300 1250 1000 500 HB HU HB HD HD HU 250 1500 1000 500 HU HD HU 300 1500 1000 500 HD HU 300 2200 1000 500 ...

Page 128: ... A2 A1 If there is danger of drainage dripping and freezing between the upper and lower units A2 Then install a roof between the upper and lower units Install the upper unit high enough above the lower unit to prevent ice buildup at the upper unit s bottom plate B1 B2 B1 If there is no danger of drainage dripping and freezing between the upper and lower units B2 Then it is not required to install ...

Page 129: ...t high pressure h Check valve i Compressor accumulator j Capillary tube k Service port refrigerant charge l Accumulator m Heat sink PCB only for RXYSQ4 6_V M1C Compressor M1F M2F Fan motor R1T Thermistor air R2T Thermistor discharge R3T Thermistor suction 1 R4T Thermistor heat exchanger R5T Thermistor suction 2 R6T Thermistor subcool heat exchanger R7T Thermistor liquid pipe S1NPH High pressure se...

Page 130: ...ntral control system connect outdoor outdoor transmission F1 F2 Notes for RXYSQ4 6_Y 1 Symbols see below 2 For X37A refer to the installation manual of the option 3 Refer to the installation or service manual on how to use BS1 BS4 push buttons and DS1 1 and DS1 2 DIP switches 4 Do not operate the unit by short circuiting protection device S1PH 5 Refer to the installation manual for indoor outdoor ...

Page 131: ...agnetic relay A1P L R Reactor A1P M1C Motor compressor M1F Motor upper fan M2F Motor lower fan PS Switching power supply A1P Q1DI Earth leakage circuit breaker field supply R Resistor A1P R1T Thermistor air R2T Thermistor discharge R3T Thermistor suction 1 R4T Thermistor heat exchanger R5T Thermistor suction 2 R6T Thermistor subcool heat exchanger R7T Thermistor liquid pipe FINTH Thermistor fin S1...

Page 132: ...Capacitor A2P DS1 DIP switch A1P F1U F2U Fuse T 31 5 A 500 V A1P F1U Fuse T 5 0 A 250 V A2P F3U F4U F5U Fuse T 6 3 A 250 V A1P H P LED service monitor orange A1P HAP Running LED service monitor green A P K1M Magnetic contactor A2P K R Magnetic relay A P L1R Reactor M1C Motor compressor M1F Motor upper fan M2F Motor lower fan PS Switching power supply A2P Q1DI Earth leakage circuit breaker field su...

Page 133: ...on S2S Cool heat selector switch option V1R IGBT power module A2P V2R V3R Diode module A2P X A PCB connector X M Terminal strip X Y Connector X37A Connector power supply for option PCB Y1E Electronic expansion valve main Y3E Electronic expansion valve subcool heat exchanger Y1S Solenoid valve 4 way valve Z C Noise filter ferrite core Z F Noise filter ...

Page 134: ...duct 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 instructions Instruction manual specified for a certain product or application which explains if relevant how to install configure operate and or maintain the product or application Accessories Labels man...

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Daikin VRV IV-S RXYSQ4T8VB Series, Installer And User Reference Manual

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