Daikin VRV 5 REMA5A7Y1B Installer And User Manual Download

Page: 163 / 180

Troubleshooting

Installer and user reference guide

163

REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07

Main

code

Sub code

Cause

Solution

SVEO

(a)

SVS

(b)

Master Slave 1

Electronic expansion valve
malfunction (upper heat
exchanger) (Y1E) – main PCB
(X21A)

Check connection on PCB or
actuator.

Electronic expansion valve
malfunction (inverter cooling)
(Y5E) – main PCB (X23A)

Check connection on PCB or
actuator.

Electronic expansion valve
malfunction (lower heat
exchanger) (Y3E) – main PCB
(X22A)

Check connection on PCB or
actuator

Electronic expansion valve
malfunction (receiver gas) (Y4E) –
main PCB (X25A)

Check connection on PCB or
actuator.

Electronic expansion valve
malfunction (subcool heat
exchanger) (Y2E) – main PCB
(X26A)

Check connection on PCB or
actuator.

Electronic expansion valve
malfunction (liquid injection)(Y7E)

- sub PCB (X9A)

Check connection on PCB or
actuator.

Discharge temperature too high
(R21T) – main PCB (X33A):

▪

Stop valve closed

▪

Refrigerant shortage

▪

Open stop valves.

▪

Check

refrigerant

amount

+recharge unit.

Compressor casing temperature
too high (R15T) – main PCB
(X33A):

▪

Stop valve closed

▪

Refrigerant shortage

▪

Open stop valves.

▪

Check

refrigerant

amount

+recharge unit.

▪

Refrigerant overcharge

▪

Stop valve closed

▪

Check

refrigerant

amount

+recharge unit.

▪

Open stop valves.

Ambient temperature sensor
malfunction (R1T) – main PCB
(X18A)

Check connection on PCB or
actuator.

Summary of Contents for VRV 5 REMA5A7Y1B

Page 1: ...Installer and user reference guide VRV 5 heat recovery REYA8A7Y1B REYA10A7Y1B REYA12A7Y1B REYA14A7Y1B REYA16A7Y1B REYA18A7Y1B REYA20A7Y1B REMA5A7Y1B ...

Page 2: ...t the air flow flap 31 7 6 Setting the master user interface 32 7 6 1 About setting the master user interface 32 7 6 2 To designate the master user interface 32 7 7 About control systems 33 8 Energy saving and optimum operation 34 8 1 Available main operation methods 35 8 2 Available comfort settings 35 9 Maintenance and service 36 9 1 Precautions for maintenance and service 36 9 2 Maintenance aft...

Page 3: ...d options 57 15 4 2 Possible combinations of indoor units 57 15 4 3 Possible combinations of outdoor units 57 15 4 4 Possible options for the outdoor unit 58 16 Special requirements for R32 units 60 16 1 Installation space requirements 60 16 2 System layout requirements 60 16 3 About the charge limit 64 16 4 To determine the charge limit 64 17 Unit installation 72 17 1 Preparing the installation s...

Page 4: ...ing the electrical wiring 115 20 1 1 Precautions when connecting the electrical wiring 115 20 1 2 About the electrical wiring 117 20 1 3 Guidelines when knocking out knockout holes 118 20 1 4 About electrical compliance 119 20 1 5 Safety device requirements 120 20 2 To route and fix the transmission wiring 121 20 3 To connect the transmission wiring 123 20 4 To finish the transmission wiring 123 2...

Page 5: ...Checklist for yearly maintenance of the outdoor unit 158 24 3 About service mode operation 158 24 3 1 To use vacuum mode 158 24 3 2 To recover refrigerant 159 25 Troubleshooting 160 25 1 Overview Troubleshooting 160 25 2 Precautions when troubleshooting 160 25 3 Solving problems based on error codes 160 25 3 1 Error codes Overview 161 25 4 Refrigerant leak detection system 167 26 Disposal 170 27 T...

Page 6: ...e 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 https www daikin eu Use the search function to find your model Latest revisions of the supplied documentation may be available on the regional Daikin website or via your dealer The origina...

Page 7: ...nal 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 information see the installer and user reference guide The unit contains rotating parts Be careful when servicing or inspecting the unit Symbols used in the docume...

Page 8: ...he instructions described in the Daikin documentation WARNING Tear apart and throw away plastic packaging bags so that nobody especially children can play with them Possible risk suffocation 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 CAUTION Wear adeq...

Page 9: ...able dust In places where corrosive gas example sulphurous acid gas is produced Corrosion of copper pipes or soldered parts may cause the refrigerant to leak 2 1 3 Refrigerant in case of R410A or R32 If applicable See the installation manual or installer reference guide of your application for more information DANGER RISK OF EXPLOSION Pump down Refrigerant leakage If you want to pump down the syst...

Page 10: ...n complies with applicable legislation In Europe EN378 is the applicable standard NOTICE Make sure the field piping and connections are NOT subjected to stress NOTICE After all the piping has been connected make sure there is no gas leak Use nitrogen to perform a gas leak detection In case recharge is required see the nameplate of the unit It states the type of refrigerant and necessary amount The...

Page 11: ...nection having a contact separation in all poles providing full disconnection under overvoltage category III condition MUST be installed in the fixed wiring WARNING ONLY use copper wires Make sure the field wiring complies with the applicable legislation All field wiring MUST be performed in accordance with the wiring diagram supplied with the product NEVER squeeze bundled cables and make sure the...

Page 12: ...l heat When connecting wiring which is the same thickness do as shown in the figure above For wiring use the designated power wire and connect firmly then secure to prevent outside pressure being exerted on the terminal board Use an appropriate screwdriver for tightening the terminal screws A screwdriver with a small head will damage the head and make proper tightening impossible Over tightening t...

Page 13: ...T guarantee to provide adequate protection to radio reception in such locations CAUTION Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency WARNING If the appliance contains R32 refrigerant the floor area of the room in which the appliance is stored shall be at least 956 m WARNING If one or more rooms are connected to the unit using a duct system make sure there are...

Page 14: ...e The drying material may dissolve and damage the system CAUTION Install the refrigerant piping or components in a position where they are unlikely to be exposed to any substance which may corrode components containing refrigerant unless the components are constructed of materials that are inherently resistant to corrosion or are suitably protected against corrosion WARNING Take sufficient precaut...

Page 15: ...g devices ventilate the room and contact the dealer where you purchased the unit Do NOT use the unit until a service person confirms that the part from which the refrigerant leaked has been repaired WARNING Charging of refrigerant MUST be in accordance with the instructions from this manual See 19 Charging refrigerant 4105 WARNING Only use R32 as refrigerant Other substances may cause explosions a...

Page 16: ...iring All components procured on site and all electrical construction MUST comply with the applicable legislation WARNING ALWAYS use multicore cable for power supply cables 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 ...

Page 17: ... that is regularly turned ON and OFF by the utility 3 1 Instructions for equipment using R32 refrigerant WARNING MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable WARNING Do NOT pierce or burn refrigerant cycle parts Do NOT use cleaning materials or means to accelerate the defrosting process other than those recommended by the manufacturer Be aware that the refrigerant...

Page 18: ...Design and install piping in refrigerating systems such as to minimise the likelihood of hydraulic shock damaging the system Mount the indoor equipment and pipes securely and protect them to avoid accidental rupture of equipment or pipes in case of events such as moving furniture or reconstruction activities NOTICE Do NOT re use joints and copper gaskets which have been used already Joints made in...

Page 19: ...For the user Installer and user reference guide 19 REMA5 REYA8 20A7Y1B VRV 5 heat recovery 4P687640 1 2022 07 For the user ...

Page 20: ...ears and above and persons with reduced physical sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved Children SHALL NOT play with the appliance Cleaning and user maintenance SHALL NOT be made by children without supervision WARNING To prevent electrica...

Page 21: ...ans 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 specialised treatment facility for reuse By ensuring waste batteries are disposed of correctly you wi...

Page 22: ...o the air flow for a long time WARNING This unit contains electrical and hot parts WARNING Before operating the unit be sure the installation has been carried out correctly by an installer Maintenance and service see 9 Maintenance and service 436 WARNING The unit is equipped with a refrigerant leak detection system for safety To be effective the unit MUST be electrically powered at all times after...

Page 23: ...mally does NOT leak If the refrigerant leaks in the room and comes in contact with fire from a burner a heater or a cooker this may result in fire or the formation of a harmful gas Turn OFF any combustible heating devices ventilate the room and contact the dealer where you purchased the unit Do NOT use the unit until a service person confirms that the part from which the refrigerant leaked has bee...

Page 24: ...bustible air from fan heaters gas cookers etc is present Always have qualified service personnel confirm that the point of leakage has been repaired or corrected before resuming operation Troubleshooting see 10 Troubleshooting 440 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...

Page 25: ...case of accidental refrigerant leaks make sure there are no naked flames The refrigerant itself is entirely safe non toxic and mildly flammable but it will generate toxic gas when it accidentally leaks into a room where combustible air from fan heaters gas cookers etc is present Always have qualified service personnel confirm that the point of leakage has been repaired or corrected before resuming...

Page 26: ...pendence regarding the selection of cooling and heating operation and each consists of one individual branch set of a BS unit and all indoor units connected downstream INFORMATION The following figure is an example and may NOT completely match your system layout a c d f h e d c c d g h h b a Heat recovery outdoor unit b Branch selector BS c VRV direct expansion DX indoor unit d Remote controller i...

Page 27: ...side 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 manua...

Page 28: ...structions 420 to acknowledge all related safety instructions NOTICE NEVER inspect or service the unit by yourself Ask a qualified service person to perform this work NOTICE 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 operati...

Page 29: ...er interface whose display shows change over under centralised control refer to installation and operation manual of the user interface When the display change over under centralised control flashes refer to 7 6 1 About setting the master user interface 432 The fan may keep on running for about 1 minute after the heating operation stops The air flow rate may adjust itself depending on the room tem...

Page 30: ...that produce open fire ventilate the room constantly Do not place appliances that produce open fire in places exposed to the air flow from the unit or under the unit It takes some time to heat up the room from the time the unit is started since the unit uses a hot air circulating system to heat the entire room If the hot air rises to the ceiling leaving the area above the floor cold we recommend t...

Page 31: ...the unit stops but wait for at least 5 minutes 7 5 Adjusting the air flow direction Refer to the operation manual of the user interface 7 5 1 About the air flow flap Air flow flap types 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 Hea...

Page 32: ... user interface a b c c c c d d d d b a Outdoor unit b Branch selector BS c VRV DX indoor unit d User interface When the system is installed as shown in the figure above it is necessary to for each subsystem designate one of the user interfaces as the master user interface The displays of slave user interfaces show change over under centralised control and slave user interfaces automatically follo...

Page 33: ...lised control 7 7 About control systems This system provides two other control systems beside individual control system one user interface controls one indoor unit Confirm the following if your unit is of the following control system type Type Description Group control system One user interface controls up to five indoor units All indoor units are equally set Two user interface control system Two ...

Page 34: ...rting the unit turn on the main power supply switch 6 hours before operation to ensure smooth running Refer to Maintenance in the indoor unit manual When the display shows time to clean the air filter 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 ...

Page 35: ... this idea the system automatically starts increasing its refrigerant temperature automatically reducing the delivered capacity and increasing the system s efficiency Hi sensible economic cooling heating 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 un...

Page 36: ...oller operation panel with benzine thinner chemical dust cloth etc The panel may get discoloured or the coating peeled off If it is heavily dirty soak a cloth in water diluted neutral detergent squeeze it well and wipe the panel clean Wipe it with another dry cloth 9 2 Maintenance after a long stop period E g at the beginning of the season Check and remove everything that might be blocking inlet a...

Page 37: ... your installer for more information NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO2 equivalent Formula to calculate the quantity in CO2 equivalent tonnes GWP value of the refrigerant total refrigerant charge in kg 1000 Contact your installer for more information 9 5 After sales service and warranty ...

Page 38: ...entioned maintenance and replacement cycles do not relate to the warranty period of the components Component Inspection cycle Maintenance cycle replacements and or repairs Electric motor 1 year 20 000 hours PCB 25 000 hours Heat exchanger 5 years Sensor thermistor etc 5 years User interface and switches 25 000 hours Drain pan 8 years Expansion valve 20 000 hours Solenoid valve 20 000 hours The tab...

Page 39: ...ng sites with 24 hour air conditioning Recommended replacement cycle of wear parts Component Inspection cycle Maintenance cycle replacements and or repairs Air filter 1 year 5 years High efficiency filter 1 year Fuse 10 years Crankcase heater 8 years Pressure containing parts In case of corrosion contact your local dealer NOTICE The table indicates main components Refer to your maintenance and ins...

Page 40: ...unction 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 a refrigerant leak occurs error code Actions will be taken by the system Do NOT turn OFF the power supply Notify your installer and report the malfunction code If t...

Page 41: ...and heating do not work 44 10 2 3 Symptom The fan speed does not correspond to the setting 44 10 2 4 Symptom The fan direction does not correspond to the setting 44 10 2 5 Symptom White mist comes out of a unit Indoor unit 44 10 2 6 Symptom White mist comes out of a unit Indoor unit outdoor unit 45 10 2 7 Symptom The user interface reads U4 or U5 and stops but then restarts after a few minutes 45 ...

Page 42: ...sub PCB indoor Heat exchanger thermistor malfunction indoor liquid Heat exchanger thermistor malfunction indoor gas Suction air thermistor malfunction indoor Discharge air thermistor malfunction indoor Movement detector or floor temperature sensor malfunction indoor R32 sensor malfunction in one of the indoor units a R32 sensor end of lifetime in one of the indoor units a User interface thermistor...

Page 43: ... PCB abnormal Fin temperature abnormal INV PCB abnormal Compressor over current detected Compressor lock startup Transmission outdoor unit inverter INV transmission trouble INV unbalanced power supply voltage Fin thermistor malfunction Capacity setting malfunction outdoor Abnormal low pressure drop faulty expansion valve Reversed power supply phase malfunction INV voltage power shortage System tes...

Page 44: ...er is getting ready to operate and is performing a communication check with all indoor units Please wait 12 minutes maximally until this process is finished 10 2 3 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 go...

Page 45: ...s is in operation this noise is heard A pishi pishi squeaking sound is heard when the system stops after heating operation Expansion and contraction of plastic parts caused by temperature change 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 ...

Page 46: ...This continues for 1 minute 10 2 15 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 10 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...

Page 47: ...n Installer and user reference guide 47 REMA5 REYA8 20A7Y1B VRV 5 heat recovery 4P687640 1 2022 07 11 Relocation Contact your dealer to remove and reinstall the entire unit Moving units requires technical expertise ...

Page 48: ...is required by law to collect transport and discard the refrigerant in accordance with the hydrofluorocarbon collection and destruction regulations NOTICE Do NOT try to dismantle the system yourself 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 reco...

Page 49: ...label 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 When the selectio...

Page 50: ...For the installer Installer and user reference guide 50 REMA5 REYA8 20A7Y1B VRV 5 heat recovery 4P687640 1 2022 07 For the installer ...

Page 51: ... the following Fragile handle the unit with care Keep the unit upright in order to avoid compressor damage Lift the unit preferably with a crane and 2 belts of at least 8 m long as shown in the figure below Always use protectors to prevent belt damage and pay attention to the position of the unit s centre of gravity d d b b d c a c a Packaging material b Belt sling c Opening d Protector NOTICE Use...

Page 52: ...PERATE THE LEAK DETECTION FUNCTION PLEASE REFER TO THE INSTALLATION MANUAL 2 RECORD OF ADDITIONAL REFRIGERANT CHARGE AMOUNTAND RESULT OF LEAK CHECK OPERATION REQUEST FOR THE INDICATION OF ADDITIONAL REFRIGERANT CHARGING AND LEAK DETECTION OPERATION RESULT BE SURE TO FILL OUT THE BLANKS WHICH ARE NEEDED FOR AFTER SALE SERVICES 1 CALCULATION OF ADDITIONAL REFRIGERANT CHARGING AMOUNT 4 AFTER FILLING ...

Page 53: ...5 25 4 19 1 8 10 12 22 2 14 16 18 20 28 6 Liquid pipe Front connection ID Øb ID Øa Bottom connection ID Øb ID Øa 5 9 5 9 5 8 10 12 12 7 14 12 7 16 18 20 High pressure low pressure gas pipe Front connection ID Øa ID Øb Bottom connection ID Øa OD Øb 5 19 1 15 9 8 10 12 19 1 14 16 18 20 22 2 14 4 To remove the transportation stay only for 5 12 HP NOTICE If the unit is operated with the transportation...

Page 54: ...and user reference guide 54 REMA5 REYA8 20A7Y1B VRV 5 heat recovery 4P687640 1 2022 07 1 Remove the bolt a and washers 2 Remove the transportation stay b as shown in the figure below 1 2 12 3 N m a b a Bolt b Transportation stay ...

Page 55: ...ons of indoor units 57 15 4 3 Possible combinations of outdoor units 57 15 4 4 Possible options for the outdoor unit 58 15 1 Identification label Outdoor unit Location 14 20 HP 5 12 HP Model identification Example R E Y A 18 A7 Y1 B Code Explanation R Outdoor air cooled E Heat recovery Y Y Single or multi module M Multi module only A Refrigerant R32 18 Capacity class A7 Model series Y1 Power suppl...

Page 56: ...n go up to 90 kW and in cooling to 80 kW The outdoor unit is designed to work in heating mode at ambient temperatures from 20 C WB to 15 5 C WB and in cooling mode at ambient temperatures from 5 C DB to 46 C DB 15 3 System layout WARNING The installation MUST comply with the requirements that apply to this R32 equipment For more information see 16 Special requirements for R32 units 460 INFORMATION...

Page 57: ...ubject to rules combination between outdoor units indoor units and remote controllers etc mentioned in the technical engineering data 15 4 2 Possible combinations of indoor units In general following type of indoor units can be connected to a VRV 5 heat recovery system The list is non exhaustive and is depending on both outdoor unit model and indoor unit model combinations VRV direct expansion DX ...

Page 58: ...EYA12 14 REYA28 REYA12 16 15 4 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 selection of the optimal branching kit please refer to 18 1 5 To select refrigerant bra...

Page 59: ...e also 17 1 2 Additional installation site requirements of the outdoor unit in cold climates 475 Demand PCB EKRP1AHTA To enable the power saving consumption control by digital inputs you MUST install the demand PCB For installation instructions see the installation manual of the demand PCB and addendum book for optional equipment ...

Page 60: ...measure In case the requirements of this manual are followed no additional safety measures are needed A big range of charge and room area combinations is allowed thanks to the countermeasures that are implemented in the system by default Follow the installation requirements below to ensure that the complete system is compliant to legislation Outdoor unit installation The outdoor unit has to be ins...

Page 61: ...quirements Piping must be installed according to instructions given in 18 Piping installation 480 Only mechanical joints e g braze flare connections that are compliant with the latest version of ISO14903 can be used For piping installed in the occupied space please make sure that the piping is protected against accidental damage Piping should be checked according to procedure as mentioned in 18 3 ...

Page 62: ...e 15 dB louder than the background noise of the room In case of higher background noise in a certain room we recommend to use an external alarm field supply in that room This alarm can be connected to the SVS output channel of the outdoor unit BS unit or the external output PCB of the indoor unit of that specific room The outdoor SVS will trigger for any R32 leak detected in the complete system Fo...

Page 63: ...n case of one R32 safety system compatible remote controller it should be the master and in the same room of the indoor unit 4 e e c a b f e c a b In case of two R32 safety system compatible remote controllers at least one remote controller should be in the room of the indoor 5 c c e a b c c c e a b Group control is allowed up to a maximum of 5 indoor units connected to different ports or connecte...

Page 64: ...rt 16 4 To determine the charge limit Step 1 Determine the smallest room served per BS unit branch pipe port in order to derive the maximum indoor capacity index that can be connected in total per branch pipe port The room area can be determined by projecting the walls doors and partitions to the floor and calculate the enclosed area The area of the smallest room being served by a port of the BS u...

Page 65: ...ot an opening to the outside The opening cannot be closed The opening must be 0 006 m 50 of Anvmin The bottom of the upper opening must be 1500 mm above the floor The height of the opening is 20 mm Note The requirement for the upper opening can be met by false ceilings ventilation ducts or similar arrangements that provide an airflow path between the connected rooms NOTICE Indoor units cannot be i...

Page 66: ...rst case indoor unit volume and 40 m piping between indoor and BS unit In VRV Xpress it is possible to add custom piping lengths and indoor units which can lead to lower minimum room area requirements Note In case multiple indoor units are connected to the same branch pipe port the sum of the connected indoor unit capacity classes needs to be equal or less than the value indicated in the table Not...

Page 67: ... 33 7 110 37 1 120 40 5 130 43 9 140 47 2 m Total refrigerant charge limit in the system Amin Smallest room area a Lowest underground floor Lowest underground floor Step 4 Use the values on the unit nameplate to determine the total amount of refrigerant in the system Contains fluorinated greenhouse gases 2 1 1 1 2 2 kg tCO2 eq 1000 GWP kg kg kg GWP xxx R32 Total charge Factory charge a additional ...

Page 68: ...lways be lower than 15 96 kg the number of indoor units connected downstream of BS units with a maximum of 63 8 kg Example 1 VRV system serving three rooms via one BS unit Room 1 20 m is served by one indoor unit 32 class connected to port A Room 2 42 m is served by two indoor units 2 50 class connected to port B no extension and liquid pipe size up has been done Room 3 150 m is served by one indo...

Page 69: ...e table under Step 2 the smallest room determines the maximum sum of capacity classes For port A this is room 1 100 32 20 40 92 OK Port C serves only room 3 use the table under Step 2 to find the maximum capacity class of the indoor unit 250 The selected indoor unit is 63 OK The building only has two underground floor levels where room 3 is located on the lowest underground level Maximum charge li...

Page 70: ... above text Determine smallest room area served by same branch pipe port See step 1 in above text Change installation for this port 1 Increase area of smallest room OR 2 Reduce connected indoor capacity below limit OR 3 Add additional countermeasures as described in applicable legislation OR 4 Split indoor capacity over 2 separate BS unit ports OR 5 Fine tune system with VRV Xpress Total indoor ca...

Page 71: ...See step 3 in above text Determine smallest room area of the lowest underground floor Change installation for this port 1 Increase area of smallest underground room OR 2 Decrease piping length by changing layout OR 3 Add additional countermeasures as described in applicable legislation Total charge amount Total charge limit Amin m Total charge limit kg Derive total charge amount See step 4 in abov...

Page 72: ...nt space to transport the unit in and out of the site Do NOT install the unit in places often used as work place In case of construction works e g grinding works where a lot of dust is created the unit MUST be covered WARNING The appliance shall be stored in a room without continuously operating ignition sources example open flames an operating gas appliance or an operating electric heater 17 1 1 ...

Page 73: ...er instructions NOTICE The equipment described in this manual may cause electronic noise generated from radio frequency energy The equipment complies to specifications that are designed to provide reasonable protection against such interference However there is no guarantee that interference will not occur in a particular installation It is therefore recommended to install the equipment and electr...

Page 74: ...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 gasoline carbon fibre ignitable dust In places where corrosive gas example sulphurous acid gas is produced Corrosion of copper pipes or soldered parts ma...

Page 75: ...er 17 1 2 Additional installation site requirements of the outdoor unit in cold climates NOTICE When operating the unit 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 ...

Page 76: ...r 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 has to operate for 5 days in this area with high humidity 90 Daikin recommends to install the optional heater tape kit EKBPH012TA or EKBPH020TA to keep the drain holes free 17 2 Opening ...

Page 77: ... PCB need to be accessed To access these pushbuttons the electrical component box cover does not need to be opened See 21 1 3 To access the field setting components 4129 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 equip...

Page 78: ...ise NOTICE When the installation height of the unit needs to be increased do NOT use stands to only support the corners Stands under the 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 conditio...

Page 79: ...r 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 17 3 2 To install the outdoor unit 1 T...

Page 80: ...its Knockout holes 92 18 2 4 To route the refrigerant piping 92 18 2 5 To connect the refrigerant piping to the outdoor unit 93 18 2 6 To connect the multi connection piping kit 94 18 2 7 To connect the refrigerant branching kit 94 18 2 8 To protect against contamination 95 18 2 9 To braze the pipe end 96 18 2 10 Using the stop valve and service port 96 18 2 11 To remove the pinched pipes 98 18 3 ...

Page 81: ...name plate larger piping thickness might be required 18 1 3 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 thickness 30 C 75 to 80 RH 15 mm 30 C 80 RH 20 mm 18 1 4 To select the piping size De...

Page 82: ...r unit total capacity type connected downstream Do not let the connection piping exceed the refrigerant piping size chosen by the general system model name Example Downstream capacity for C capacity index of unit a1 unit a2 unit a3 unit a4 unit a5 unit a6 unit a7 Downstream capacity for C capacity index of unit a3 unit a4 Indoor unit capacity index Piping outer diameter mm Liquid pipe Suction gas ...

Page 83: ...d upon field piping rules determined by the installation needs See technical data and installer user reference guide for more details about the required pipe size up for your installation 18 1 5 To select refrigerant branch kits Refrigerant refnets For piping example refer to 18 1 4 To select the piping size 481 When using refnet joints at the first branch counted from the outdoor unit side choose...

Page 84: ...07A for an outdoor multi connection piping kit for 2 outdoor units 18 1 6 Installation limitations The illustration and table below show the installation limitations g a f e b c g g d g g g g g g a b See table below c Maximum limit of 16 downstream ports of BS units in refrigerant flow through Unused ports must also be counted E g 16 ports BS12A BS4A or BS8A BS4A BS4A d At least one indoor unit mu...

Page 85: ... 16 Maximum number of indoor units connected to BS units in refrigerant flow through c 64 18 1 7 About the piping length Make sure the piping installation does not exceed the maximum allowable pipe length the allowable level difference and the allowable length after branching To illustrate the piping length requirements 2 cases are discussed in the chapters below They describe both standard and no...

Page 86: ...um of a 20 m b 10 m equivalent length of branch pipe 6 7 m and the equivalent length of BS1 depending on the total downstream Capacity Index as indicated in the table above CI 400 1 6 m 20 10 6 7 1 6 38 3 m 2 The equivalent length for an indoor unit connected to BS2 is the sum of a 20 m c 15 m d 10 m equivalent length of branch pipe 6 7 m the equivalent length of BS1 depending on total downstream ...

Page 87: ...r more information The outdoor unit is positioned lower than the indoor units Size up the liquid piping refer to 18 1 4 To select the piping size 481 for more information Activate the outdoor unit setting Refer to the service manual for more information No technical cooling b If single outdoor units or standard multi outdoor combinations 20 HP are connected to only VRV DX indoor units then the hei...

Page 88: ...ed to size up the liquid piping between the first branch kit or BS unit and the last branch kit or last BS unit It is also required to size up the liquid piping downstream of the BS unit if the last refrigerant branch kit is located downstream of the BS unit It is not required to size up the liquid piping between the BS unit and indoor units If the increased pipe size is larger than the pipe size ...

Page 89: ...o required to size up the liquid piping downstream of the BS unit if the last refrigerant branch kit is located downstream of the BS unit It is not required to size up the liquid piping between the BS unit and indoor units If the increased pipe size is larger than the pipe size of the main pipe also increase the size of the main pipe In case of size up of the liquid piping double its length in the...

Page 90: ...llects 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 suction gas line and the high pressure low pressure gas line within a length of 2 m from the kit If Then 2 m a b 2 m 2 m a 2 m 200 mm b 2 m a To indoor unit b Piping between outdoor units ...

Page 91: ...g 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 to the indoor units see the installation manual of the indoor units Connecting the multi connection piping kit Connecting the refrigerant branching kit Ke...

Page 92: ...ssing copper tubes through walls Unit Installation period Protection method Outdoor unit 1 month Pinch the pipe 1 month Pinch or tape the pipe Indoor unit Regardless of the period NOTICE Do NOT open the refrigerant stop valve before checking the refrigerant piping When you need to charge additional refrigerant it is recommended to open the refrigerant stop valve after charging NOTICE Bending radiu...

Page 93: ... knockout 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 ...

Page 94: ...ulti 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 connected...

Page 95: ...the piping Unit Installation 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 Seal up the opening area marked ...

Page 96: ...ve 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 cause ...

Page 97: ...d tighten until the correct tightening torque value is achieved see Tightening torques 498 NOTICE Stop valves need to be opened on torque specified in this manual It is not allowed to turn valve a quarter turn back when opening it 4 Install the dust cap Result The valve is now open NOTICE Reinstall dust cap to prevent aging of O ring and risk of leakage To handle the service port Always use a char...

Page 98: ...lt in property damage or personal injury which may be serious depending on the circumstances Use the following procedure to remove the pinched piping 1 Make sure that the stop valves are fully closed 2 Connect the vacuuming recovery unit through a manifold to the service port of all stop valves a a b b a Service port b Stop valve 3 Recover gas and oil from the pinched piping by using a recovery un...

Page 99: ... finished The indoor units BS units outdoor unit are already powered ON Use procedure Method 2 After power ON Finish piping work Use procedure Method 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 BS unit or indoor are powered on When the units are powered on the expansion valves will initialise This means that ...

Page 100: ...gerant piping for example water may have entered the piping first carry out the vacuum drying procedure below until all moisture has been removed All piping inside the unit has been factory 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 ...

Page 101: ...stop valve Close High pressure low pressure gas line stop valve Close NOTICE The connections to the indoor units and all indoor units should also be leak and vacuum tested Keep any possible field supplied 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 als...

Page 102: ...d valves to the indoor units open as well Leak test and vacuum drying should be done before the power supply is set to the unit If not see 18 3 1 About checking the refrigerant piping 4 99 for more information To remove all moisture from the system proceed as follows 1 Evacuate 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 pu...

Page 103: ...the insulation on the refrigerant piping according to the installation environment Ambient temperature Humidity Minimum thickness 30 C 75 to 80 RH 15 mm 30 C 80 RH 20 mm Between outdoor and indoor unit NOTICE It is recommended that the refrigerant piping between indoor and outdoor unit is installed in a ducting or the refrigerant piping is wrapped with finishing tape 1 Insulate and fix the refrige...

Page 104: ... protect it against sharp edges 8 If the outdoor unit is installed above the indoor unit cover the stop valves with sealing material to prevent condensed water on the stop valves from moving to the indoor unit NOTICE Any exposed piping might cause condensation 9 Reattach the service cover and the piping intake plate 10 Seal all gaps to prevent snow and small animals from entering the system WARNIN...

Page 105: ...eparation WARNING Only use R32 as refrigerant Other substances may cause explosions and accidents R32 contains fluorinated greenhouse gases Its global warming potential GWP value is 675 Do NOT vent these gases into the atmosphere When charging refrigerant ALWAYS use protective gloves and safety glasses NOTICE If the power of some units is turned off the charging procedure cannot be finished proper...

Page 106: ...possible to minimise the amount of refrigerant contained in them Cylinders shall be kept in an appropriate position according to the instructions Ensure that the refrigerating system is earthed prior to charging the system with refrigerant See 20 Electrical installation 4115 Label the system when charging is complete Extreme care shall be taken not to overfill the refrigerating system NOTICE Prior...

Page 107: ...aximum indoor capacity index which can be connected to a BS unit port is determined based on the smallest room served by that port In case the system serves the lowest underground floor of a building there is an extra limit to the maximum allowable total refrigerant amount This maximum refrigerant amount is determined based on the area of the smallest room on the lowest underground floor See 16 Sp...

Page 108: ...ndividual outdoor unit charge factors When using more than one multi BS unit add the sum of the individual BS unit charge factors 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 Outdoor unit charge factors Model Parameter B REMA5 0 kg REYA8 12 REYA14 1 2 kg REYA16 1 3 kg REYA18 4 3 kg REYA20 Parameter C I...

Page 109: ... units the connection ratio must comply with the following requirements For more information see the technical engineering data Other combinations than those mentioned in the table are not allowed Indoor units Maximum a Total CR b CR per type c Type CR VRV DX 64 50 130 VRV DX 50 130 a Maximum number allowed excluding BS units and EKEXV kits b Total CR Total indoor unit capacity connection ratio c ...

Page 110: ...o to test run Q R Q R Q R p p A B R32 d Step 4a Close valve B Step 5 Connect valve A to the refrigerant charge port d Open all outdoor unit stop valves Step 6 Activate field setting 2 20 1 Unit will start manual refrigerant charging operation Step 7 Open valve A Charge remaining amount of refrigerant P kg R Q P Step 8 Close valve A Push BS3 to stop manual charging Charging is finished Fill in the ...

Page 111: ... d a Weighing scales b Refrigerant R32 tank siphon system c Vacuum pump d Liquid line stop valve B Valve B 4 Do one of the following If Then a The determined additional refrigerant amount is not reached yet Close valve B and disconnect the manifold from the liquid line Continue with the Charging refrigerant procedure as described below b The determined additional refrigerant amount is reached Clos...

Page 112: ...ttings 4135 Result The unit will start operation 7 Open valve A and charge refrigerant until the remaining determined additional refrigerant amount is added and then close valve A 8 Close valve A and press BS3 to stop the manual additional refrigerant charge mode INFORMATION The manual refrigerant charge operation will automatically stop within 30 minutes If charging is not completed after 30 minu...

Page 113: ...g GWP XXX RXXX a f c d e a If a multilingual fluorinated greenhouse gases label is delivered with the unit see accessories peel off the applicable 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 equi...

Page 114: ...has a sensitivity of 5 grams refrigerant per year or better at a pressure of at least 0 25 times the maximum working pressure see PS High on the unit name plate In case a leak is detected recover the refrigerant and repair the joint s Then perform the leak tests see 18 3 4 To perform a leak test 4101 charge refrigerant check for refrigerant leaks after charging see above ...

Page 115: ...y 124 20 7 To connect the external outputs 126 20 8 To check the insulation resistance of the compressor 127 20 1 About connecting the electrical wiring Typical workflow Connecting 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 Co...

Page 116: ...tem They can cause overheating electrical shock or fire Do NOT install a phase advancing capacitor because this unit is equipped with an inverter A phase advancing capacitor will reduce performance and may cause accidents CAUTION Do NOT push or place redundant cable length into the unit NOTICE The distance between the high voltage and low voltage cables should be at least 50 mm NOTICE Do NOT opera...

Page 117: ...y not touch internal piping except the inverter PCB cooling pipe in order to avoid wire damage due to high temperature piping Firmly close the lid and arrange the electrical wires so as to prevent the lid or other parts from coming loose The transmission wiring outside the unit should be wrapped and routed together with the field piping Field piping can be routed from front or bottom of the unit g...

Page 118: ...ssion wiring NOTICE Sheathed and shielded cables are required for transmission wiring between outdoor unit and BS unit For the above wiring always use vinyl cords with 0 75 to 1 25 mm2 sheath or cables 2 core wires Example a b f c f e g d c B i i h h a Field power supply with earth leakage protector b Main switch c Earth connection d Outdoor unit e Indoor unit f User interface g Branch selector BS...

Page 119: ...ng the limits for voltage changes voltage fluctuations and flicker in public low voltage supply systems for equipment with rated current 75 A It is the responsibility of the installer or user of the equipment to ensure by consultation 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 6...

Page 120: ...irements 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 of the wiring should be done in accordance with the applicable legislation based on the information mentioned in the table below INFORMATION Multi uni...

Page 121: ...e above multiply the result by 1 1 and select the next higher recommended fuse capacity Example Combining the REYA24 by using the REYA10 and REYA14 Minimum circuit ampacity of the REYA10 22 0 A Minimum circuit ampacity of the REYA14 27 0 A Accordingly the minimum circuit ampacity of the REYA24 22 0 27 0 49 0 A Multiply the above result by 1 1 49 0 A 1 1 53 9 A so the recommended fuse capacity woul...

Page 122: ...all animals or dirt from entering X1A b 5 12 HP 14 20 HP e a e c d d d d d d a b e a Wiring between the units indoor outdoor F1 F2 left b Internal transmission wiring Q1 Q2 c Plastic bracket d Tie wrap field supply e P clamp for cable shield earthing Fix to the indicated plastic brackets using field supplied clamping material The wiring for F1 F2 indoor transmission must be shielded wire The shiel...

Page 123: ...nit B slave outdoor unit b1 BS unit 1 b2 BS unit 2 c Indoor unit d Outdoor unit other system transmission F1 F2 The interconnecting wiring between the outdoor units in the same piping system must be connected to the Q1 Q2 Out Multi terminals Connecting the wires to the F1 F2 terminals results in system malfunction The wiring for the other systems must be connected to the F1 F2 Out Out terminals of...

Page 124: ... of other units connected to the same earth The power supply wiring can be routed from the front and left side Fix it to the lower mounting hole c X1M a b a c d X1M b 5 12 HP 14 20 HP A A A d d d d a Power supply possibility 1 a b Power supply possibility 2 a c Power supply possibility 3 a Use conduit d Tie wrap a Knockout hole has to be removed Close the hole to avoid small animals or dirt from e...

Page 125: ...g the earth wire align the wire with the cut out section of the cup washer Incomplete earthing may cause electrical shock The power supply MUST be clamped to the bracket using field supplied clamp material to prevent external force being applied to the terminal The green and yellow striped wire MUST be used for earthing only 14 20 HP a b c d f g e i j h a Power supply 380 415 V 3N 50 Hz b Fuse c E...

Page 126: ...closes in case of occurrence of general errors See 10 1 Error codes Overview 441 and 25 3 1 Error codes Overview 4161 for errors that will trigger this output NOTICE The outputs have a limited capacity of 220 240 V AC 0 5 A Do NOT use the outputs as a power source Instead use each output to energize a relay that controls the external circuit WHT SVEO SVS BLK GRY PPL b a c X2M a SVEO output termina...

Page 127: ...ck the insulation resistance of the compressor NOTICE If after installation refrigerant accumulates in the compressor the insulation resistance over the poles can drop 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 Insulat...

Page 128: ...e Automatic mode during cooling 145 21 2 4 Example Automatic mode during heating 146 21 3 Using the leak detection function 147 21 3 1 About automatic leak detection 147 21 3 2 To manually perform a leak detection 148 21 1 Making field settings 21 1 1 About making field settings To continue the configuration of the VRV 5 heat recovery system it is required to give some input to the PCB of the unit...

Page 129: ...operation before normal operation can restart It will be indicated in below explanations See also 21 1 4 To access mode 1 or 2 4130 21 1 5 To use mode 1 4131 21 1 6 To use mode 2 4132 21 1 7 Mode 1 monitoring settings 4133 21 1 8 Mode 2 field settings 4135 21 1 2 Field setting components Location of the 7 segment displays buttons and DIP switches a b BS1 BS2 DS1 DS2 BS3 X27A BS1 MODE For changing ...

Page 130: ...side panels except for the service cover on the electrical component box are closed while working Close the lid of the electrical component box firmly before turning on the power 21 1 4 To access mode 1 or 2 Initialisation default situation NOTICE Turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor Turn on the power supply...

Page 131: ...the default situation INFORMATION If you get confused in the middle of the process push BS1 to return to the default situation no indication on 7 segment displays blank see 21 1 4 To access mode 1 or 2 4130 21 1 5 To use mode 1 Mode 1 is used to set basic settings and to monitor the status of the unit What How Changing and accessing the setting in mode 1 Once mode 1 is selected push BS1 one time y...

Page 132: ...s value is done by pushing BS3 one time To quit and return to the initial status Press BS1 Changing the value of the selected setting in mode 2 Once mode 2 is selected push BS1 for more than five seconds you can select the wanted setting It is done by pushing BS2 Accessing the selected setting s value is done by pushing BS3 one time Now BS2 is used to select the required value of the selected sett...

Page 133: ...aster unit should be used to input field settings in mode 2 1 0 Description No indication Undefined situation 0 Outdoor unit is master unit 1 Outdoor unit is slave 1 unit 1 1 Shows the status of low noise operation Low noise operation reduces the sound generated by the unit compared to nominal operating conditions 1 1 Description 0 Unit is currently not operating under low noise restrictions 1 Uni...

Page 134: ...h the total number of indoor units which are recognised by the system In case there is a mismatch it is recommended to check the communication wiring path between outdoor and indoor units F1 F2 communication line 1 13 Shows the total number of connected outdoor units in case of multiple outdoor system It can be convenient to check if the total number of outdoor units which are installed matches th...

Page 135: ... 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 40 1 41 Code Shows 1 40 The current cooling comfort setting 1 41 The current heating comfort setting See 21 2 Energy saving and optimum operation...

Page 136: ...on conditions when an external signal is sent to the unit this setting should be changed This setting will only be effective when the optional external control adaptor DTA104A61 62 is installed 2 12 Description 0 default Deactivated 1 Activated 2 14 Input additional refrigerant amount that was charged In case you want to use the automatic leak detection functionality it is required to input the to...

Page 137: ...rant charge activated To stop the manual additional refrigerant charge operation when the required additional refrigerant amount is charged push BS3 If this function was not aborted 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 Perform a BS ...

Page 138: ...ation level via the external control adaptor If the system needs to be running under low noise operation conditions when an external signal is sent to the unit this setting defines the level of low noise that will be applied This setting will only be effective when the optional external control adaptor DTA104A61 62 is installed and the setting 2 12 was activated 2 25 Description 1 Level 1 Level 5 ...

Page 139: ... 2 via the external control 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 2 The level is according to the table 2 31 Power consumption limitation approximately 1 default 40 2 50 3 55 2 32 Forced all time power c...

Page 140: ...ombinations 488 2 47 Te target temperature during heat recovery operation 2 47 Te target C 0 default Auto 2 6 3 7 4 8 5 9 6 10 7 11 2 49 Height difference setting 2 49 Description 0 default 1 In case the outdoor unit is installed in the highest 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 ex...

Page 141: ...isor remote controller connected to system 2 65 Automatic leak detection interval time This setting is used in conjunction with setting 2 88 2 65 Time between automatic leak detection executions days 0 default 365 1 180 2 90 3 60 4 30 5 7 6 1 2 81 Cooling comfort setting This setting is used in conjunction with setting 2 8 2 81 Cooling comfort setting 0 Eco 1 default Mild 2 Quick 3 Powerful For mo...

Page 142: ...ionality Depending on the priority emphasises can be put on energy saving or comfort level Several parameters can be selected resulting in the optimal balance between energy consumption and comfort for the particular application Several patterns are available and explained below Modify the parameters to the needs of your building and to realize the best balance between energy consumption and comfo...

Page 143: ...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 your...

Page 144: ...tion 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 temporar...

Page 145: ...werful 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 unless for protection control To activate this in Chan...

Page 146: ...ure 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 Powerful 21 2 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 valu...

Page 147: ... value the interval time or the time until the next automatic leak detection operation can be chosen The parameter 2 88 defines whether the leak detection operation is executed one time within 2 65 days or intermittent respecting an interval of 2 65 days Availability of the leak detection function feature requires input of the additional refrigerant charge amount immediately after finishing the ch...

Page 148: ...d Leak detected Information codes Code Description Unit is not prepared to execute leak detection operation refer to requirements to be able to execute leak detection operation Indoor unit is out of temperature range 20 32 C for leak detection operation Outdoor unit is out of temperature range 4 43 C for leak detection operation Too low pressure was noticed during leak detection operation Restart ...

Page 149: ...49 22 3 Checklist before commissioning 150 22 4 Checklist during commissioning 151 22 5 About the test run 152 22 6 To perform a test run 152 22 7 Correcting after abnormal completion of the test run 153 22 8 To perform a BS indoor unit connection check 153 22 9 Operating the unit 155 22 1 Overview Commissioning After installation and once the field settings are defined the installer is obliged to...

Page 150: ...er running to the crankcase heater and to protect the compressor During test operation the outdoor unit and the indoor units will start up Make sure that the preparations of all indoor units are finished field piping electrical wiring air purge See installation manual of the indoor units for details 22 3 Checklist before commissioning 1 After the installation of the unit check the items listed bel...

Page 151: ...e is a refrigerant leak try to repair the leak If the repair is unsuccessful call your local dealer Do not touch any refrigerant which has leaked out from refrigerant piping connections This may result in frostbite Oil leak Check the compressor for oil leakage If there is an oil leak try to repair the leak If the repairing is unsuccessful call your local dealer Air inlet outlet Check that the air ...

Page 152: ... 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 are not malfunctions 22 6 To perform a test run 1 Close all front panels in order to not let it be the cause of misjudgement except the electrical component box inspection opening service cover 2 Make sure all field setting...

Page 153: ...after 5 minutes 22 7 Correcting after abnormal completion of the test run The test operation is only completed 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 c...

Page 154: ...t possible to stop the unit operation from a user interface To abort the operation press BS3 The unit will stop after 30 seconds During the check if the following codes are on 7 segment display the check will not continue take actions for correcting Code Description Indoor unit is out of temperature range 20 27 C for leak detection operation Outdoor unit is out of temperature range 5 43 C for leak...

Page 155: ...2022 07 22 9 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 156: ...roperly 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 the u...

Page 157: ...de 158 24 3 2 To recover refrigerant 159 24 1 Maintenance safety precautions DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING WARNING Prior to start working on systems containing flammable refrigerant safety checks are necessary to ensure that the risk of ignition is minimised Therefore some instructions should be followed Please refer to the service manual for more information NOTICE ...

Page 158: ...rn off the main switch and to remove the fuses from the control circuit located in the outdoor unit 24 2 Checklist for yearly maintenance of the outdoor unit Check the following at least once a year Heat exchanger The heat exchanger of the outdoor unit can get blocked up due to dust dirt leaves etc It is recommended to clean the heat exchanger yearly A blocked heat exchanger can lead to too low pr...

Page 159: ...rant 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 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 co...

Page 160: ...ELECTROCUTION DANGER RISK OF BURNING SCALDING WARNING When carrying out an inspection on the switch box of the unit ALWAYS make sure that the unit is disconnected from the mains Turn off the respective circuit breaker When a safety device 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 oth...

Page 161: ...iew In case other error codes appear contact your dealer Main code Sub code Cause Solution SVEO a SVS b Master Slave 1 The R32 sensor in one of the indoor units has detected a refrigerant leak c Possible R32 leak The BS unit will close the shut off valves of the branch pipe port to which the corresponding indoor unit is connected Indoor units on this branch pipe port will be out of operation until...

Page 162: ...of the BS units One of the sensors is at the end of lifetime for CH 22 almost and must be replaced Refer to the service manual for more information R32 sensor end of lifetime in one of the BS units Earth leakage detector activated Restart the unit If the problem reoccurs contact your dealer Earth leakage detector malfunction open circuit A1P X101A Check connection on PCB or actuator High pressure ...

Page 163: ...as Y4E main PCB X25A Check connection on PCB or actuator Electronic expansion valve malfunction subcool heat exchanger Y2E main PCB X26A Check connection on PCB or actuator Electronic expansion valve malfunction liquid injection Y7E sub PCB X9A Check connection on PCB or actuator Discharge temperature too high R21T main PCB X33A Stop valve closed Refrigerant shortage Open stop valves Check refrige...

Page 164: ...on PCB or actuator Heat exchanger deicer temperature sensor R11T main PCB X35A Check connection on PCB or actuator Upper heat exchanger gas temperature sensor R8T main PCB X29A Check connection on PCB or actuator Lower heat exchanger gas temperature sensor R9T main PCB X29A Check connection on PCB or actuator Liquid main temperature sensor R3T main PCB X30A Check connection on PCB or actuator Subc...

Page 165: ...B X31A Check connection on PCB or actuator Transmission outdoor unit inverter INV1 transmission trouble main PCB X20A X28A X40A Check connection Transmission outdoor unit inverter FAN1 transmission trouble main PCB X20A X28A X40A Check connection Transmission outdoor unit inverter FAN2 transmission trouble main PCB X20A X28A X40A Check connection Transmission main PCB sub PCB main PCB X20A sub PCB...

Page 166: ...rning because there is an error on another unit indoor BS unit Check if other indoor units BS units have malfunction and confirm indoor unit mix is allowed Connection malfunction over indoor units or type mismatch Check if other indoor units have malfunction and confirm indoor unit mix is allowed Connection malfunction over indoor units or type mismatch Check if other indoor units have malfunction...

Page 167: ... 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 functionality is installed Use VRV R32 compatible indoor units see engineering databook for unit selection a The SVEO terminal provides an electrical contact that closes in case the indicated error occurs b The SVS termina...

Page 168: ...uipped of the BS unit to evacuate the leaking refrigerant After the operation the system will go in locked state and the remote controllers will display an error Service is needed to repair the leak and activate the system Refer to the service manual for more information Feedback of the remote controller after leak detection operation will depend on its mode WARNING The unit is equipped with a ref...

Page 169: ...eak is detected For exact model name see option list of the indoor unit For more information about this option refer to the installation manual of the optional output PCB Note iTM and WAGO module can also be connected to generate an output signal in case of leak detection E g it can be used at a supervised location Please refer to installation manual of the iTM for further details NOTICE The R32 r...

Page 170: ...ry 4P687640 1 2022 07 26 Disposal NOTICE Do NOT try to dismantle the system yourself dismantling of the system treatment of the refrigerant oil and other parts MUST comply with applicable legislation Units MUST be treated at a specialised treatment facility for reuse recycling and recovery ...

Page 171: ...diagram Outdoor unit 173 27 3 Wiring diagram Outdoor unit 176 27 1 Service space Outdoor unit Make sure the space around the unit is adequate for servicing and the minimum space for air inlet and air 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 1 2 3 4 5 Layout A B C D A B Possibility 1 Possibili...

Page 172: ...cles 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 ope...

Page 173: ...iagram Outdoor unit Piping diagram 5 12 HP a b d 3D138283 e c Y2E R16T Y1E R5T Y5S R8T R10T R12T R15T Y10S Y2S R7T Y4E R6T Y3E R11T R4T Y5E M1F R3T S1NPL Y3S R21T Y11S M1 S1NPH S1PH Y4S Y8S PHE R13T R9T R1T HPS M sv sv sv sv a Stop valve liquid b Service port c Stop valve high pressure low pressure d Stop valve gas e Charge port ...

Page 174: ...22 07 Piping diagram 14 20 HP a b d e c Y2E Y1E R5T Y5S R8T R10T R12T R15T Y10S Y2S R7T Y4E R6T Y3E R11T R4T Y5E M1F R3T S1NPL Y3S R21T Y11S S1NPH S1PH Y4S R13T R9T M2F Y7E R1T DT 3D138283 HPS M sv sv sv M a Stop valve liquid b Service port c Stop valve high pressure low pressure d Stop valve gas e Charge port ...

Page 175: ...ve Filter Check valve Pressure relief valve Thermistor Solenoid valve Heat sink PCB Capillary tube Expansion valve 4 way valve Propeller fan High pressure switch PL low pressure sensor PH high pressure sensor Oil separator Accumulator Heat exchanger Compressor PHE plate heat exchanger DT double tube heat exchanger Distributor Liquid receiver Muffler ...

Page 176: ...d DS1 DS2 switches 3 Do NOT operate the unit by short circuiting protection device S1PH 4 Refer to the installation manual for connection wiring to indoor outdoor transmission F1 F2 and outdoor multi transmission Q1 Q2 5 When using the central control system connect outdoor outdoor transmission F1 F2 6 The capacity of the contact is 220 240V AC 0 5 A rush current needs 3 A or less 7 Use dry contac...

Page 177: ... F1U A6P 14 20 HP only Fuse T 3 15 A 250 V F1U F2U Fuse T 1 A 250 V F3U Field fuse F101U A4P Fuse HAP A P Pilot lamp service monitor is green K R A P Relay on PCB L1R Reactor M1C Motor compressor M1F Motor fan M2F 14 20 HP only Motor fan Q1DI Earth leakage circuit breaker R1T Thermistor air R3T Thermistor liquid main R4T Thermistor heat exchanger liquid pipe upper R5T Thermistor heat exchanger liq...

Page 178: ...t 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 Y7E 14 20 HP only Electronic expansion valve liquid injection Y2S Solenoid valve liquid pipe Y3S Solenoid valve high pressure low pressure gas pipe Y4S Solenoid valve heat exchanger lo...

Page 179: ... 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 manuals...

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