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About the units and options

Installer and user reference guide

REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10

16 About the units and options

In this chapter

Overview: About the units and options .................................................................................................................................

16.2

Identification label: Outdoor unit...........................................................................................................................................

16.3

About the outdoor unit ..........................................................................................................................................................

16.4

System layout..........................................................................................................................................................................

16.5

Combining units and options..................................................................................................................................................

16.5.1

About combining units and options.......................................................................................................................

16.5.2

Possible combinations of indoor units...................................................................................................................

16.5.3

Possible combinations of outdoor units ................................................................................................................

16.5.4

Possible options for the outdoor unit....................................................................................................................

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

▪

Which outdoor units have to be used as standalone units, and which outdoor
units can be combined

16.2 Identification label: Outdoor unit

Location

14~20 HP

5~12 HP

Model identification

Example:

R E Y Q 18 U7 Y1 B [*]

Code

Explanation

Outdoor air cooled

Heat recovery

Y=Single or multi module

M=Multi module only

Refrigerant R410A

Capacity class

Summary of Contents for REMQ5U7Y1B

Page 1: ...Installer and user reference guide VRV IV heat recovery REYQ8U7Y1B REYQ10U7Y1B REYQ12U7Y1B REYQ14U7Y1B REYQ16U7Y1B REYQ18U7Y1B REYQ20U7Y1B REMQ5U7Y1B ...

Page 2: ...use the 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 30 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 VRV DX and Hydrobox 32 8 6 About contr...

Page 3: ... remove the transportation stay only for 18 20 HP 54 16 About the units and options 55 16 1 Overview About the units and options 55 16 2 Identification label Outdoor unit 55 16 3 About the outdoor unit 56 16 4 System layout 56 16 5 Combining units and options 57 16 5 1 About combining units and options 57 16 5 2 Possible combinations of indoor units 58 16 5 3 Possible combinations of outdoor units...

Page 4: ...1 1 Precautions when connecting the electrical wiring 109 19 1 2 Field wiring Overview 111 19 1 3 About the electrical wiring 111 19 1 4 Guidelines when knocking out knockout holes 112 19 1 5 About electrical compliance 113 19 1 6 Safety device requirements 114 19 2 To route and fix the transmission wiring 116 19 3 To connect the transmission wiring 117 19 4 To finish the transmission wiring 118 1...

Page 5: ...ety precautions 151 23 1 1 To prevent electrical hazards 151 23 2 About service mode operation 152 23 2 1 To use vacuum mode 152 23 2 2 To recover refrigerant 152 24 Troubleshooting 154 24 1 Solving problems based on error codes 154 24 2 Error codes Overview 154 25 Disposal 161 26 Technical data 162 26 1 Service space Outdoor unit 162 26 2 Piping diagram Outdoor unit 164 26 3 Wiring diagram Outdoo...

Page 6: ...ual 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 supplied documentation ma...

Page 7: ...t 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 informatio...

Page 8: ...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 documentation C...

Page 9: ...t 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 Elect...

Page 10: ...essor 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 refr...

Page 11: ... 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 be...

Page 12: ...f 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 current c...

Page 13: ...ox 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 produc...

Page 14: ...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 WARNING...

Page 15: ...h 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 star...

Page 16: ...pply 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 an...

Page 17: ...For the user Installer and user reference guide 17 REYQ8 20 REMQ5U7Y1B VRV IV heat recovery 4P561154 1A 2020 10 For the user ...

Page 18: ...ith 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 electrica...

Page 19: ...ol 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 correc...

Page 20: ...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 task ...

Page 21: ...e 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 refrigerant leaks in the room contact with a fire of a bu...

Page 22: ...exhaustive list depending on outdoor unit model and indoor unit model combinations In this chapter 5 1 System layout 22 5 1 System layout Your VRV IV heat recovery series outdoor unit can be one of following models Model Description REYQ8 20 Heat recovery model for single or multi use REMQ5 Heat recovery model for multi use only Depending on the type of outdoor unit which is chosen some functional...

Page 23: ... k l c c k k k j c e i k k c d 1 3 2 5 4 e g c a Outdoor unit b Refrigerant piping c Branch selector unit BS d Multi branch selector unit BS e VRV DX indoor unit f Low temperature LT Hydrobox unit g Cooling only VRV indoor unit h High temperature HT Hydrobox unit i EKEXV kit j Air handling unit AHU k User interface l Wireless user interface ...

Page 24: ...nside 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 manu...

Page 25: ... 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 contact your dealer for the operat...

Page 26: ...control systems 32 8 1 Operation range Use the system in the following temperature and humidity ranges for safe and effective operation Cooling Heating Outdoor temperature 5 43 C DB 20 20 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 temperature or the humidity is beyond these conditions ...

Page 27: ... heating operation freezing of the outdoor unit s air cooled coil increases over time restricting the energy transfer to the outdoor unit s coil Heating capability decreases and the system needs to go into defrost operation to be able to remove frost from the outdoor unit s coil During defrost operation the heating capacity on the indoor unit side will temporarily drop until defrosting is complete...

Page 28: ... dealer for details 8 2 4 To operate the system WITHOUT cool heat changeover remote control switch 1 Press the operation mode selector button on the user interface several times and select the operation mode of your choice Cooling operation Heating operation Fan only operation 2 Press the ON OFF button on the user interface Result The operation lamp lights up and the system starts operating 8 2 5 ...

Page 29: ...ing the dry program 8 3 1 About the dry program The function of this program is to decrease the humidity in your room with minimal temperature decrease minimal room cooling The micro computer automatically determines temperature and fan speed cannot be set by the user interface The system does not go into operation if the room temperature is low 20 C 8 3 2 To use the dry program WITHOUT cool heat ...

Page 30: ...n on the user interface several times and select program dry operation 3 Press the ON OFF button of the user interface Result The operation lamp lights up and the system starts operating 4 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 5 Press the ON OFF butto...

Page 31: ...ntrol the flow direction and then the user interface indication will also change The air flow direction can be adjusted in one of the following ways The air flow flap itself adjusts its position The air flow direction can be fixed by the user Automatic and desired position WARNING Never touch the air outlet or the horizontal blades while the swing flap is in operation Fingers may become caught or ...

Page 32: ...ll slave user interfaces connected 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 interface is designated as the master user interface and the display showing change over under centralised control vanishes The displays of other user interfaces show change...

Page 33: ...o 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 the indoor...

Page 34: ...erature 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 operation For details concerning to Hi sensible applications please contact your installer 9 2 Available comfort settings For...

Page 35: ...tion 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 35 10 2 Maintenance before a long stop period 36 10 3 About the refrigerant 36 10 4 Aft...

Page 36: ...ion 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 tonne...

Page 37: ... 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 ga...

Page 38: ...annot 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 cycl...

Page 39: ... 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 fail...

Page 40: ...n is possible but cooling and heating do not work 43 11 2 4 Symptom The fan speed does not correspond to the setting 43 11 2 5 Symptom The fan direction does not correspond to the setting 43 11 2 6 Symptom White mist comes out of a unit Indoor unit 44 11 2 7 Symptom White mist comes out of a unit Indoor unit outdoor unit 44 11 2 8 Symptom The user interface reads U4 or U5 and stops but then restar...

Page 41: ...on indoor Movement detector or floor temperature sensor malfunction indoor User interface thermistor malfunction indoor PCB malfunction outdoor Current leakage detector was activated 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 malfunct...

Page 42: ...tage Autocharge operation related Fin thermistor malfunction Autocharge operation related Autocharge operation related Autocharge operation related Capacity setting malfunction outdoor Abnormal low pressure drop faulty expansion valve Reversed power supply phase malfunction INV voltage power shortage System test run not yet executed Faulty wiring indoor outdoor Abnormal user interface indoor commu...

Page 43: ...hat 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 changeover is controlled by the cool heat changeover remote control switch Ask your dealer where the remote control switch is installed 11 2 3 Symptom Fan operation is possible but cooling and heating do not work I...

Page 44: ...he noise ceases 11 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 starts working and makes the noise Its volume will reduce in about one minute A continuous low shah sound is heard when the system is in cooling operation or at a stop When the drain pump optional accessories...

Page 45: ...ws 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 11 2 16 Symptom The compressor in the outdoor unit does not stop after a short heating operation This is to prevent refrigerant from remaining in the compressor The unit will stop after 5 to 10 minutes 11 2 17 Symptom The inside of ...

Page 46: ...staller and user reference guide 46 REYQ8 20 REMQ5U7Y1B VRV IV heat recovery 4P561154 1A 2020 10 12 Relocation Contact your dealer for removing and reinstalling the total unit Moving units requires technical expertise ...

Page 47: ...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 48: ...page https 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 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 ...

Page 49: ...For the installer Installer and user reference guide 49 REYQ8 20 REMQ5U7Y1B VRV IV heat recovery 4P561154 1A 2020 10 For the installer ...

Page 50: ...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 It contains information about Unpacking and handling the outdoor unit Removing the accessories from the unit Keep the following in mind At delivery the unit MUST be checked for damage Any damage MUST be reported immediately...

Page 51: ...the unit A forklift can only be used for transport as long as the unit remains on its pallet as shown above 15 3 To unpack the outdoor unit Remove the packaging material from the unit Take care not to damage the unit when removing the shrink foil with a cutter Remove the 4 bolts fixing the unit to its pallet WARNING Tear apart and throw away plastic packaging bags so that nobody especially childre...

Page 52: ...F ADDITIONAL 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 AMOUNT TOTAL LENGTH OF LIQUID PIPE SIZE O22 2 x 0 37 TOTAL LENGTH OF LIQUID PIPE SIZE O19 1 x 0 26 TOTAL LENGTH OF LIQUID PIPE SIZE O15 9 x 0 18 TOTAL LENGTH OF LIQUID PIPE SIZE O12 7 x 0 12 TOTAL LE...

Page 53: ...0 19 1 12 14 22 2 16 18 20 28 6 a Only in combination with the outdoor unit multi connection piping kit 15 6 To remove the transportation stay only for 14 16 HP The transportation stays for protecting the unit during transport must be removed Proceed as shown in the figure and procedure below NOTICE If the unit is operated with the transportation stay attached abnormal vibration or noise may be ge...

Page 54: ...re and procedure below NOTICE If the unit is operated with the transportation stay attached abnormal vibration or noise may be generated 1 Slightly loosen the bolt a 2 Remove the transportation stay b as shown in the figure below 3 Tighten the bolt a again 4 Slightly loosen the bolt c 5 Remove the bolt d of the transportation stay e 6 Remove the transportation stay e as shown in the figure below 7...

Page 55: ...ombinations of outdoor units 58 16 5 4 Possible options for the outdoor unit 59 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 Which outdoor units have to be used as standalone units and which outdoor units can ...

Page 56: ...n manual and brought to your attention Certain features have exclusive model rights These units are intended for outdoor installation and aimed for heat pump applications including air to air and air to water applications These units have in single use heating capacities ranging from 25 to 63 kW and cooling capacities rating from 22 4 to 56 kW In multi combination the heating capacity can go up ti...

Page 57: ...oling only VRV indoor unit h High temperature HT Hydrobox unit i EKEXV kit j Air handling unit AHU k User interface l Wireless user interface 16 5 Combining units and options INFORMATION Certain options might not be available in your country 16 5 1 About combining units and options NOTICE To be sure your system setup outdoor unit indoor unit s will work you have to consult the latest technical eng...

Page 58: ...ndoor unit model combinations VRV direct expansion DX indoor units air to air applications HT high temperature Hydrobox air to water applications HXHD series heating only LT low temperature Hydrobox air to water applications HXY080 125 series AHU air to air applications EKEXV kit EKEQM box required depending on the application Comfort air curtain air to air applications CYVS Biddle series 16 5 3 P...

Page 59: ...12 16 16 REYQ46 REYQ14 16 16 REYQ48 REYQ16 16 16 REYQ50 REYQ16 16 18 REYQ52 REYQ16 18 18 REYQ54 REYQ18 18 18 16 5 4 Possible options for the outdoor unit INFORMATION Refer to the technical engineering data for the latest option names Refrigerant branching kit Description Model name Refnet header KHRQ23M29H KHRQ23M64H KHRQ23M75H Refnet joint KHRQ23M20T KHRQ23M29T9 KHRQ23M64T KHRQ23M75T For the sele...

Page 60: ...ilable on http www daikineurope com support and manuals software downloads Heater tape kit To keep the drain holes free in cold climates with high humidity you can install a heater tape kit If you do so you also have to install the heater tape PCB kit Description Model name Heater tape kit for 5 12 HP EKBPH012TA Heater tape kit for 14 20 HP EKBPH020TA See also Additional installation site requirem...

Page 61: ...on is selected according the applicable legislation Do NOT install the unit in the following places In potentially explosive atmospheres 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 of fire due to the leakage of flammable gases example thinner or gasoli...

Page 62: ...cannot cause any damage to the installation space and surroundings When installing the unit in a small room take measures in order to keep the refrigerant concentration from exceeding allowable safety limits in the event of a refrigerant leak refer to About safety against refrigerant leaks 464 CAUTION Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency Be sure that ...

Page 63: ... in a low outdoor ambient temperature be sure to follow the instructions described below To prevent exposure to wind and snow install a baffle plate on the air side of the outdoor unit In heavy snowfall areas it is very important to select an installation site where the snow will NOT affect the unit If lateral snowfall is possible make sure that the heat exchanger coil is NOT affected by the snow ...

Page 64: ...fety against leakage according to local regulations or standards The following standards may be applicable if local regulations are not available This system uses R410A as refrigerant R410A itself is an entirely safe non toxic non combustible refrigerant Nevertheless care must be taken to ensure that the system is installed in a room which is sufficiently large This assures that the maximum concen...

Page 65: ...to comply 1 Calculate the amount of refrigerant kg charged to each system separately Formula A B C A Amount of refrigerant in a single unit system amount of refrigerant with which the system is charged before leaving the factory B Additional charging amount amount of refrigerant added locally C Total amount of refrigerant kg in the system NOTICE Where a single refrigerant facility is divided into ...

Page 66: ...l be made Formula F G H F Total volume of refrigerant in the refrigerant system G Size m3 of smallest room in which there is an indoor unit installed H Maximum concentration level kg m3 4 Calculate the refrigerant density taking the volume of the room where the indoor unit is installed and the adjacent room Install ventilation openings in the door of adjacent rooms until the refrigerant density is...

Page 67: ...eed to be opened See To access the field setting components 4124 17 2 3 To open the electrical component box of the outdoor unit NOTICE Do NOT apply excessive force when opening the electronic component box cover Excessive force can deform the cover resulting in entering of water to cause equipment failure 5 12 HP 2 SW8 14 20 HP 6 SW8 NOTICE When closing the electrical component box cover make sur...

Page 68: ... unit must be at least 100 mm wide 100 mm 100 mm NOT allowed Allowed preferred installation The height of the foundation must at least be 150 mm from the floor In heavy snowfall areas this height should be increased depending on the installation place and condition The preferred installation is on a solid longitudinal foundation steel beam frame or concrete The foundation must be larger than the g...

Page 69: ...n 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 the water drainage is not taken care of the area around the unit might be very slippery When installed in a corrosive environment use a nut with plastic washer a to protect the nut tightening part from rust a ...

Page 70: ... 91 18 3 Checking the refrigerant piping 92 18 3 1 About checking the refrigerant piping 92 18 3 2 Checking refrigerant piping General guidelines 93 18 3 3 Checking refrigerant piping Setup 94 18 3 4 To perform a leak test 94 18 3 5 To perform vacuum drying 95 18 3 6 To insulate the refrigerant piping 95 18 4 Charging refrigerant 96 18 4 1 Precautions when charging refrigerant 96 18 4 2 About char...

Page 71: ...m O annealed 19 1 mm 1 2H half hard All piping lengths and distances have been taken into consideration see About the piping length 475 18 1 2 Refrigerant piping insulation Use 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 temperature Humidity Minimum th...

Page 72: ...m the following 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 Indoor unit capacity index Piping outer diameter size mm Liquid pipe Suction gas pipe High pressure low pressure gas pipe 150 9 5 15 9 12 7 150 x 200 19 1 15 9 200 x 290 22 2 19 1 290 x 420 12 7...

Page 73: ... 15 9 16 18 22 15 9 19 1 24 26 34 19 1 22 2 36 54 The pipe thickness 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 Ø mm Minimal thickness t mm 6 4 9 5 12 7 0 80 15 9 0 99 19 1 22 2 0 80 28 6 0 99 34 9 1 21 41 3 1 43 In case the required pipe sizes inch sizes are not available it is ...

Page 74: ...indoor units connected after the refrigerant branch Indoor unit capacity index 3 pipes 200 KHRQ23M20T 200 x 290 KHRQ23M29T9 290 x 640 KHRQ23M64T 640 KHRQ23M75T Concerning refnet headers choose from the following table in accordance with the total capacity of all the indoor units connected below the refnet header Indoor unit capacity index 3 pipes 200 KHRQ23M29H 200 x 290 290 x 640 KHRQ23M64H a 640...

Page 75: ... length Refnet joint 0 5 m Refnet header 1 m Single BS1Q100 160 4 m Single BS1Q25 6 m Multi BS4 16Q14 4 m Allowable height difference Term Definition Height difference m H1 Height difference between outdoor and indoor units 50 40 b H2 Height difference between indoor units 15 30 a H3 Height difference between outdoor units 5 H4 Height difference between EKEXV kits and AHU units 5 a If single outdo...

Page 76: ...ositioned lower than the indoor units Minimum connection ratio varies according to the height difference between outdoor and indoor units 40 60 m 80 60 65 m 90 65 80 m 100 80 90 m 110 Size up the liquid piping refer to To select the piping size 471 for more information Activate the outdoor unit setting Refer to the service manual for more information No technical cooling 18 1 6 Single outdoor unit...

Page 77: ...s possible if all of the following conditions are met 1 In case of BS1Q units the piping length between all indoor units and the nearest branch kit is 40 m 2 In case of multi BS units the piping length between all indoor units and the multi BS unit is 40 m 3 It is required to size up the liquid piping between the first branch kit and the last Beware that in contrast to multi BS units BS1Q units ar...

Page 78: ...r piping branch 4 10 m 13 m Total pipe length 300 m 600 m b a If the equivalent piping length is more than 90 m size up the main liquid piping according to To select the piping size 471 b In this case both are actual piping lengths outdoor units 20 HP outdoor units 20 HP Connection with VRV DX indoor units and air handling units H3 1 2 H1 H2 H4 3 4 a b b b c d e d e f f 5 a Outdoor unit b VRV DX i...

Page 79: ...binations 20 HP and free multi outdoor unit combinations Connection with only VRV DX indoor units H3 1 5 H1 H2 3 2 4 a b b c d e e a Outdoor unit b VRV DX indoor unit c Multi BS unit d BS unit e VRV DX indoor unit Pipe Maximum length actual equivalent Longest pipe from the outdoor unit or the last multi outdoor piping branch 1 2 1 3 1 5 135 m 160 m a Longest pipe after the first branch 2 3 5 40 m ...

Page 80: ...ping previous condition double its length in the calculation of the total piping length Make sure the total piping length is within limitations 5 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 VRV DX indoor units and Hydrobox units H3 1 2 H1 H2 3 5 4 a b b c d e a Outdoor unit b VRV DX indoor...

Page 81: ... actual equivalent Longest pipe from the outdoor unit or the last multi outdoor piping branch 1 2 1 3 1 5 135 m 160 m a Longest pipe after the first branch 2 3 5 40 m In case of a multi outdoor setup longest pipe from the outdoor unit to the last multi outdoor piping branch 4 10 m 13 m Total pipe length 500 m a If the equivalent piping length is more than 90 m size up the main liquid piping accord...

Page 82: ...or unit always connect the stop 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 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 200 mm or more in the su...

Page 83: ...ng piping kit second branch 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 Connecting the refrigerant piping involves Routing and connecting the refrigerant piping to the outdoor unit Protecting the outdoor unit against contamination Connecting the refrigerant piping t...

Page 84: ...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 18 2 3 Multiple outdoor units...

Page 85: ...ckout holes Avoid 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 18 2 5 To connect the refrigerant piping to the outdoor unit INFORMATION All local inter unit pipi...

Page 86: ...multi connection piping kit NOTICE Improper installation may lead to malfunction of the outdoor unit Install the joints horizontally so that the caution label a attached to the joint comes to the top Do not tilt the joint more than 7 5 see view A Do not install the joint vertically see view B a a A B 7 5 7 5 a Caution label NOT allowed Allowed Make sure that the total length of the piping connecte...

Page 87: ...lation period Protection method Outdoor unit 1 month Pinch the pipe 1 month Pinch or tape the pipe Indoor unit Regardless of the period Seal the piping and wiring intake holes using sealing material field supply otherwise the capacity of the unit will drop and small animals may enter the machine Example passing piping out through the front a a Close the areas marked with When the piping is routed ...

Page 88: ...l valve e Pressure reducing valve f Nitrogen Do NOT use anti oxidants when brazing pipe joints Residue can clog pipes and break equipment Do NOT use flux when brazing copper to copper refrigerant piping Use phosphor copper brazing filler alloy BCuP which does not require flux Flux has an extremely harmful influence on refrigerant piping systems For instance if chlorine based flux is used it will c...

Page 89: ...pen the stop valve 1 Remove the stop valve cover 2 Insert a hexagon wrench into the stop valve and turn the stop valve counterclockwise 3 When the stop valve cannot be turned any further stop turning 4 Install the stop valve cover Result The valve is now open To fully open the Ø19 1 Ø25 4 mm stop valve turn the hexagonal wrench until a torque between 27 and 33 N m is achieved Inadequate torque may...

Page 90: ... After handling the stop valve tighten the stop valve cover securely and check for refrigerant leaks For the tightening torque refer to the table below To handle the service port Always use a charge hose equipped with a valve depressor pin since the service port is a Schrader type valve After handling the service port make sure to tighten the service port cover securely For the tightening torque r...

Page 91: ...y unit through a manifold to the service port of all stop valves p p R410A N2 b c e a f g h d A C D B a Pressure reducing valve b Nitrogen c Weighing scales d Refrigerant R410A tank siphon system e Vacuum pump f Liquid line stop valve g Gas line stop valve h High pressure low pressure gas line stop valve A Valve A B Valve B C Valve C D Valve D 3 Recover gas and oil from the spun piping by using a ...

Page 92: ... 1 Before power ON regular method Yes No No Yes It is very 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 Befor...

Page 93: ...eaks 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 Checking refriger...

Page 94: ...tested Keep any possible field supplied field piping valves open as well Refer to the indoor unit installation manual for more details Leak test and vacuum drying should 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 492 18 3 4 To perform a leak test The leak test must satisfy the specifi...

Page 95: ...uate 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 gaug...

Page 96: ...s located higher than the indoor unit this must be prevented by sealing up the connections See below figure a b a Insulation material b Caulking etc 18 4 Charging refrigerant 18 4 1 Precautions when charging refrigerant WARNING ONLY use R410A as refrigerant Other substances may cause explosions and accidents R410A contains fluorinated greenhouse gases Its global warming potential GWP value is 2087...

Page 97: ...oes not contain any refrigerant any more e g after refrigerant reclaim operation the unit has to be charged with its original amount of refrigerant refer to the nameplate on the unit by pre charging before the automatic charging function can be started 18 4 2 About charging refrigerant Once vacuum drying is finished additional refrigerant charging can start There are two methods to charge addition...

Page 98: ... Ø12 7 0 12 X5 Ø9 5 0 059 X6 Ø6 4 0 022 1 04 A B C R Additional refrigerant to be charged in kg and rounded off to 1 decimal place X1 6 Total length m of liquid piping size at Øa A C Parameters A C Parameter A If the total indoor unit capacity connection ratio CR 100 charge an additional 0 5 kg of refrigerant per outdoor unit Parameter B In case of a multi outdoor unit system add the sum of the in...

Page 99: ...data Other combinations than those mentioned in the table are not allowed Indoor units Maximum a Total CR b CR per type c Type CR VRV DX 64 50 130 VRV DX 50 130 VRV DX without BS unit cooling only d 0 50 VRV DX Hydrobox 32 50 200 e VRV DX 50 110 VRV DX without BS unit cooling only d 0 50 LT HT Hydrobox 0 100 VRV DX AHU 64 50 110 VRV DX 50 110 VRV DX without BS unit cooling only d 0 50 AHU 0 60 a M...

Page 100: ...efrigerant overcharge happened recover refrigerant to reach R Q Step 2 3 Close valves C D and A Open valve B to the liquid line Execute pre charging amount Q kg Disconnect the manifold from the gas line and the high pressure low pressure gas line Step 4a Close valve B Charging is finished Fill in the amount on the additional refrigerant charge label Input the additional refrigerant amount via sett...

Page 101: ...Open valve A Charge remaining amount of refrigerant P kg R Q P Depending on ambient conditions the unit will decide to perform autocharge operation in heating or cooling mode Close valve A Push BS3 to stop manual charging Charging is finished Fill in the amount on the additional refrigerant charge label Input the additional refrigerant amount via setting 2 14 Go to test run Step 5 Connect valve A ...

Page 102: ...Go to test run If following codes appear e 2 indoor temperature out of range and e 3 outdoor temperature out of range In this case perform automatic charging procedure again t0X will appear Push BS1 Charging is finished Fill in the amount on the additional refrigerant charge label Input the additional refrigerant amount via setting 2 14 Go to test run Following codes appear e 2 indoor temperature ...

Page 103: ...ine stop valve h High pressure low pressure gas line stop valve A Valve A B Valve B C Valve C D Valve D 4 Do one of the following If Then 4a The calculated additional refrigerant amount is reached by above pre charging procedure Close valve B and disconnect the manifold from the liquid line 4b The total amount of refrigerant could not be charged by pre charging Close valve B disconnect the manifol...

Page 104: ...he tightening torque for the lid is 11 5 to 13 9 N m In order to ensure uniform refrigerant distribution it may take the compressor 10 minutes to start up after the unit has started operation This is not a malfunction 6 Proceed with one of the following 6a Step 6a To automatically charge refrigerant 4104 6b Step 6b To manually charge refrigerant 4106 INFORMATION After charging refrigerant Record t...

Page 105: ...en Heating operation will be flashing Push BS2 to restart the procedure Cooling operation Malfunction code will appear Push BS1 to abort and restart the procedure Heating middle 7 segment display indicates Charging will continue the 7 segment display indication intermittently shows the current low pressure value and the status indication When the remaining additional refrigerant amount is charged ...

Page 106: ...has to be repeated INFORMATION When a malfunction is detected during the procedure e g in case of closed stop valve a malfunction code will be displayed In that case refer to 24 1 Solving problems based on error codes 4154 and solve the malfunction accordingly Resetting the malfunction can be done by pushing BS1 The procedure can be restarted from Step 6a To automatically charge refrigerant 4104 A...

Page 107: ...efore retrying autocharge procedure Check if all gas side stop valves are opened correctly Check if the valve of the refrigerant cylinder is opened Check if the air inlet and outlet of the indoor unit are not obstructed Freeze up prevention indoor unit Close valve A immediately Push BS3 to reset Retry autocharge procedure Indoor unit is out of temperature range for leak detection operation Retry w...

Page 108: ...ries peel off the applicable language and stick it on top of a b Factory refrigerant charge see unit name plate c Additional refrigerant amount charged d Total refrigerant 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 ...

Page 109: ...nsmission wiring 117 19 4 To finish the transmission wiring 118 19 5 To route and fix the power supply 118 19 6 To connect the power supply 119 19 7 To check the insulation resistance of the compressor 120 19 1 About connecting the electrical wiring 19 1 1 Precautions when connecting the electrical wiring DANGER RISK OF ELECTROCUTION WARNING ALWAYS use multicore cable for power supply cables INFOR...

Page 110: ...edundant 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 capacit...

Page 111: ... unit e Indoor unit f User interface g BS unit h Cool heat selector i Circuit breaker j Fuse Power supply 3N 50 Hz Power supply 1 50 Hz Earth wiring 19 1 3 About the electrical wiring It is important to keep the power supply and the transmission wiring separated from each other In order to avoid any electrical interference the distance between both wiring should always be at least 25 mm NOTICE Be ...

Page 112: ...ranch line 1 e Branch line 2 f Branch line 3 g No branch is allowed after branch h Central user interface etc A Outdoor indoor transmission wiring B Master slave transmission wiring For the above wiring always use vinyl cords with 0 75 to 1 25 mm2 sheath or cables 2 core wires 3 core wire cables are allowable for the cooler heater changeover user interface only 19 1 4 Guidelines when knocking out ...

Page 113: ...nsultation with the distribution network operator if necessary that the equipment is connected only to a supply with a system impedance Zsys less than or 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 IEC 61000 3 12 European International Technical ...

Page 114: ...44 15094 REYQ46 15634 REYQ48 16172 REYQ50 17071 REYQ52 17969 REYQ54 18868 INFORMATION Multi units are standard combinations 19 1 6 Safety device requirements The power supply must be protected with the required safety devices i e a main switch a slow blow fuse on each phase and an earth leakage protector in accordance with the applicable legislation For standard combinations Selection and sizing o...

Page 115: ...outdoor units Model Minimum circuit ampacity Recommended fuses REYQ10 30 0 A 40 A REYQ13 30 0 A 40 A REYQ16 30 0 A 40 A REYQ18 37 0 A 50 A REYQ20 39 0 A 50 A REYQ22 46 0 A 63 A REYQ24 46 0 A 63 A REYQ26 51 0 A 63 A REYQ28 55 0 A 63 A REYQ30 59 0 A 80 A REYQ32 62 0 A 80 A REYQ34 66 0 A 80 A REYQ36 70 0 A 80 A REYQ38 74 0 A 100 A REYQ40 81 0 A 100 A REYQ42 84 0 A 100 A REYQ44 86 0 A 100 A REYQ46 89 ...

Page 116: ...he REYQ8 REYQ10 and REYQ12 Minimum circuit ampacity of the REYQ8 16 1 A Minimum circuit ampacity of the REYQ10 22 0 A Minimum circuit ampacity of the REYQ12 24 0 A Accordingly the minimum circuit ampacity of the REYQ30 16 1 22 0 24 0 62 1 A Multiply the above result by 1 1 62 1 A 1 1 68 3 A so the recommended fuse capacity would be 80 A NOTICE When using residual current operated circuit breakers ...

Page 117: ... connect the transmission wiring The wiring from the indoor units must be connected to the F1 F2 In Out terminals on the PCB in the outdoor unit Tightening torque for the transmission wiring terminal screws Screw size Tightening torque N m M3 5 A1P 0 8 0 96 F1 F2 F1 F2 Q1 Q2 F1 F1 F2 F2 Q1Q2 g e TOIN DUNIT TOOUT DUNIT TOMULTIUNIT A1P Q1 Q2 A1P Q1 Q2 A1P a b c d f F1 F2F1F2 F1 F2F1F2 TO IN D UNIT T...

Page 118: ...nit to which the interconnecting wiring for the indoor units is connected The base unit is the outdoor unit to which the interconnecting wiring for the indoor units is connected 19 4 To finish the transmission wiring After installing the transmission wires inside the unit wrap them along with the on site refrigerant pipes using finishing tape as shown in figure below b a f c d f e f a Liquid pipe ...

Page 119: ...ssion wiring terminal block Otherwise the entire system may break down 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 ...

Page 120: ...erminal block f Connect each power wire RED to L1 WHT to L2 BLK 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 Multiple outdoor units To connect the power supply for multiple outdoor units to each other ring tongues have to be used No bare cable can be used In that case the ring washer that is installed by defau...

Page 121: ...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 compressor will heat up and evaporate any refrigerant in the compressor 3 Measure the insulation resistance again ...

Page 122: ...on 143 20 4 1 About automatic leak detection 143 20 4 2 To manually perform a leak detection 143 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 Using the leak detection function INFORMATION It is important that all information in thi...

Page 123: ...ed to monitor the current situation of the outdoor unit Some field setting contents can be monitored as well Mode 2 field settings Mode 2 is used to change the 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 after changing field settings Some fiel...

Page 124: ...pen to avoid touching of live parts Make sure to re attach the inspection cover into the electronic component box cover and to close the front plate s inspection cover after the job is finished During operation of the unit the front plate of the unit should be attached Settings are still possible to be made through the inspection opening NOTICE Make sure that all outside panels except for the serv...

Page 125: ...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 situation Mode 2 Push BS1 for at least 5 seconds 7 segment display indication changes to Push BS1 one more time shortly to return to the default situation INFORMATION If you get confused in the middle of the process push BS1 to return to...

Page 126: ... settings in mode 2 Mode 2 is used to set field settings of the outdoor unit and system What How Changing and accessing the setting in mode 2 Once mode 2 is selected push BS1 for more than 5 seconds you can select the wanted setting It is done by pushing 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...

Page 127: ... 20 2 7 Mode 1 Monitoring settings 1 0 Shows whether the unit you check is a master slave 1 or slave 2 unit Master slave 1 and slave 2 indications are relevant in multiple outdoor unit system configurations The allocation of which outdoor unit is master 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 ...

Page 128: ...or this operation an optional accessory is required 1 5 1 6 Shows 1 5 The current Te target parameter position 1 6 The current Tc target parameter position For more information and advice about the impact of these settings see 20 3 Energy saving and optimum operation 4137 1 10 Shows the total number of connected VRV and AHU indoor units It can be convenient to check if the total number of indoor u...

Page 129: ...utomatic leak detection function was activated through mode 2 settings it is possible to see within how many days the automatic leak detection will be performed Depending on the chosen field setting the automatic leak detection function can be programmed one time into the future or on perpetual basis Indication is given in remaining days and is between 0 and 365 days 1 38 1 39 Shows 1 38 The numbe...

Page 130: ... for further details 2 8 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 20 3 Energy saving and optimum operation 4137 2 9 Tc target temperature during heating operation 2 9 Tc target C 0 default Auto 1 41 2 42 3 43 4 44 5 45 6 46 For more information and advice about the ...

Page 131: ...15 4 15 x 20 5 20 x 25 6 25 x 30 7 30 x 35 8 35 x 40 9 40 x 45 10 45 x 50 11 50 x 55 12 55 x 60 13 60 x 65 14 65 x 70 15 70 x 75 16 75 x 80 17 80 x 85 18 85 x 90 19 Setting cannot be used Total refrigerant charge has to be 100 kg 20 21 For details concerning the charging procedure see About charging refrigerant 497 For details concerning the calculation of additional refrigerant charge amount see ...

Page 132: ... by pushing BS3 the unit will stop its operation after 30 minutes 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 app...

Page 133: ...3 Level 2 Level 1 2 default Level 2 3 Level 3 2 26 Low noise operation 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 setting is used in conjunction with setting 2 22 2 27 Stop time automatic low noise operation approximately 1 6h00 2 7h00 3 default ...

Page 134: ...rm power 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 applied continuously The level is according to the table 2 32 Restriction reference 0 default Function not active 1 Follows 2 30 setting 2 Follows 2 31 setting 2 35 Height difference setting 2 3...

Page 135: ...hest position indoor units are installed on a lower position than outdoor units and the height difference between the lowest indoor unit and the outdoor unit exceeds 50 m the setting 2 49 has to be changed to 1 Other changes limitations to the circuit apply For more information see Single outdoor units and standard multi outdoor unit combinations 20 HP 476 and Standard multi outdoor unit combinati...

Page 136: ... 0 default 365 1 180 2 90 3 60 4 30 5 7 6 1 2 86 Automatic leak detection activation When you want to use the automatic leak detection function you have to activate this setting By activating setting 2 86 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 85 The automatic leak det...

Page 137: ...ur of the system are still possible due to protection controls to keep the unit operating under reliable conditions The intentional target however is fixed and will be used to obtain the best balance between energy consumption and comfort depending on the application type Care should be taken about selection procedures and system setups especially when using Hydrobox units The requested leaving wa...

Page 138: ... 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 operation For details concerning to Hi sensible applications please contact you...

Page 139: ...ation 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 operation the evaporating temperature is allowed to go down to 6 C on temporary base depending on the situation In case of heating operation the condense temperature is allowed to go up to 46 C on tempora...

Page 140: ...ove The start up condition is different from the powerful and quick comfort setting To activate this in Change Cooling operation 2 81 1 This setting is used in conjunction with setting 2 8 Heating operation 2 82 1 This setting is used in conjunction with setting 2 9 Eco The original refrigerant temperature target which is defined by the operation method see above is kept without any correction unl...

Page 141: ...tual 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 temperature 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 Powerf...

Page 142: ... 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 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 ...

Page 143: ...put for the additional charged refrigerant weight the accuracy of the leak detection function will decrease INFORMATION The weighed and already recorded amount of additional refrigerant charge not the total amount of refrigerant present in the system must be entered The leak detection function is not available when Hydrobox units are connected to the system When the height difference between indoo...

Page 144: ... detection operation Restart leak detection operation Indicates an indoor unit which is not compatible with leak detection functionality is installed e g Hydrobox units Result of leak detection operation is informed in 1 29 Steps during leak detection Display Steps Preparation a Pressure equalisation Start up Leak detection operation Standby b Leak detection operation is finished a If the indoor t...

Page 145: ...on of the test run 149 21 7 Operating the unit 149 21 1 Overview Commissioning After installation and once the field settings are defined the installer is obliged to verify correct operation Therefore a test run MUST be performed according to the procedures described below This chapter describes what you have to do and know to commission the system after it is configured Commissioning typically co...

Page 146: ...ks are fulfilled the unit must be closed Power up the unit after it is closed You read the complete installation 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 the unit Field wiring Be sure that the field wiring has been carried out according to the ins...

Page 147: ...ional refrigerant charge The amount of refrigerant to be added to the unit shall be written on the included Added refrigerant plate and 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 EN60335 2 40 and keep record of the contents of the field setting s 21...

Page 148: ...ing to the crankcase heater and to protect the compressor 4 Make sure the default idle situation is existing see To access mode 1 or 2 4124 Push BS2 for 5 seconds or more The unit will start test operation Result The test operation is automatically carried out the outdoor unit display will indicate and the indication Test operation and Under centralised control will display on the user interface o...

Page 149: ...ed if there is no malfunction code displayed on the user interface or outdoor unit 7 segment display In case of a displayed malfunction code perform correcting 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 the indoor unit for detailed malfunction codes rela...

Page 150: ...erly 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 of t...

Page 151: ... 1 To use vacuum mode 152 23 2 2 To recover refrigerant 152 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 electrical hazards When performing servic...

Page 152: ... 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 About service mode operation Refrigerant recovery operation vacuuming operation is possible by applying setting 2 21 Refer to 20 2 Making field settings 4122 for details how to set mode 2 When vacuuming recovery mode is used check very carefully what should be vacuume...

Page 153: ...rant circuit Do NOT use the unit s automatic pump down function with which you can collect all refrigerant 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 that the unit s compressor does NOT have to operate NOTICE Make sure to NOT recover any oil while rec...

Page 154: ...n code will be displayed intermittent Example Code Example Main code Sub code With an interval of 1 second the display will switch between main code and sub code 24 2 Error codes Overview In case other error codes appear contact your dealer Main code Sub code Cause Solution Master Slave 1 Slave 2 Earth leakage detector activated Restart the unit If the problem reoccurs contact your dealer Earth le...

Page 155: ...n subcool heat exchanger Y2E 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 valve malfunction inverter cooling Y5E sub PCB X8A Check connection on PCB or actuator Electronic expansion valve malfunction auto charge Y6E sub PCB X10A Check connection on PCB or actuator Dis...

Page 156: ... malfunction R15T open circuit main PCB X19A Check connection on PCB or actuator Compressor casing temperature sensor malfunction R15T short circuit main PCB X19A Check connection on PCB or actuator Suction compressor temperature sensor R12T sub PCB X15A Check connection on PCB or actuator Suction temperature sensor R10T main PCB X29A Check connection on PCB or actuator Heat exchanger deicer tempe...

Page 157: ...malfunction S1NPH open circuit main PCB X32A Check connection on PCB or actuator High pressure sensor malfunction S1NPH short circuit main PCB X32A Check connection on PCB or actuator Low pressure sensor malfunction S1NPL open circuit main PCB X31A Check connection on PCB or actuator Low pressure sensor malfunction S1NPL short circuit main PCB X31A Check connection on PCB or actuator Transmission ...

Page 158: ...INV2 power phase loss Check if power supply is within range Malfunction code system test run not yet executed system operation not possible Execute system test run An error occurred during the test run Re execute the test run Test run aborted Re execute the test run Test run aborted due to communication issues Check the communication wires and re execute the test run Faulty wiring to Q1 Q2 or indo...

Page 159: ... address malfunction inconsistency Check if transmission wired unit amount matches with powered unit amount by monitor mode or wait till initialisation is finished Auto address malfunction inconsistency Check if transmission wired unit amount matches with powered unit amount by monitor mode or wait till initialisation is finished Stop valve closed or wrong during system test run Open stop valves A...

Page 160: ...on Indoor unit is out of temperature 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 satisfied Too low pressure was noticed during leak detection operation Restart leak detection operation Indicates an indoor unit which is not compatible with leak detection functio...

Page 161: ...ry 4P561154 1A 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 162: ...iping diagram Outdoor unit 164 26 3 Wiring diagram Outdoor unit 166 26 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 outlet is available refer to the figure below and choose one of the possibilities a b a c d a b a e d e c a b a e d f c a b a e b d c a b a e d f c Layout A B C D A B Possibility 1 Possibility 2...

Page 163: ...acles 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 where only the sides A B have obstacles the wall heights have no influence on any indicated service space dimensions The installation space required on these drawings are for full load heating op...

Page 164: ...ce guide 164 REYQ8 20 REMQ5U7Y1B VRV IV heat recovery 4P561154 1A 2020 10 26 2 Piping diagram Outdoor unit Piping diagram 5 12 HP a b d e c a Stop valve liquid b Service port c Stop valve high pressure low pressure d Stop valve gas e Charge port ...

Page 165: ...and user reference guide 165 REYQ8 20 REMQ5U7Y1B VRV IV heat recovery 4P561154 1A 2020 10 Piping diagram 14 20 HP a b d e c a Stop valve liquid b Service port c Stop valve high pressure low pressure d Stop valve gas e Charge port ...

Page 166: ...ressure sensor High pressure sensor Oil separator Accumulator Heat exchanger Compressor Double tube heat exchanger Distributor Liquid receiver 26 3 Wiring diagram Outdoor unit Refer to the wiring diagram sticker on the unit The abbreviations used are listed below INFORMATION The wiring diagram on the outdoor unit is only for the outdoor unit For the indoor unit or optional electrical components re...

Page 167: ...to the installation manual of the optional accessory 6 For 14 20 HP connector X1A M2F is red connector X2A M2F is white 7 For 5 12 HP Colours see below 7 For 14 20 HP When using the optional accessory refer to the installation manual of the optional accessory 8 For 14 20 HP Colours see below Symbols Field wiring Terminal block Connector Terminal Protective earth Noiseless earth Earth wiring Field ...

Page 168: ...ic relay Y4S K13R A1P Magnetic relay Y5S L1R Reactor M1C Motor compressor M1F Motor fan PS A1P A3P A5P Switching power supply Q1DI Earth leakage circuit breaker Q1LD A1P Earth current detector Q1RP A1P Phase reversal detect circuit R24 A4P Resistor current sensor R300 A3P Resistor current sensor R1T Thermistor air R3T Thermistor liquid main R4T Thermistor heat exchanger liquid pipe upper R5T Therm...

Page 169: ...onic expansion valve heat exchanger lower Y4E Electronic expansion valve receiver gas Y5E Electronic expansion valve inverter cooling Y6E Electronic expansion valve auto charge Y2S Solenoid valve liquid pipe Y3S Solenoid valve high pressure low pressure gas pipe Y4S Solenoid valve heat exchanger lower Y5S Solenoid valve heat exchanger upper Y11S Solenoid valve M1C oil return Z C Noise filter ferri...

Page 170: ... Magnetic relay E2HC K9R A1P Magnetic relay Y3S K11R A1P Magnetic relay Y2S K12R A1P Magnetic relay Y4S K13R A1P Magnetic relay Y5S L1R L2R Reactor M1C M2C Motor compressor M1F M2F Motor fan PS A1P A3P A6P A8P Switching power supply Q1DI Earth leakage circuit breaker Q1LD A1P Earth current detector Q1RP A1P Phase reversal detect circuit R24 A4P A7P Resistor current sensor R300 A3P A6P Resistor cur...

Page 171: ...module X A Connector X1M Terminal block X1M A1P Terminal block control Y1E Electronic expansion 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 expansion valve inverter cooling Y6E Electronic expansion valve auto charge Y2S Solenoid valve liquid pipe Y3S S...

Page 172: ...t 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 manual...

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