Daikin VRV IV REYQ72TATJ Series, Installation Manual

Page 1: ...www daikinac com content resources manuals for the most current version of installation instructions In the event of conflicting information the online installation instruction is to be used Veuillez...

Page 2: ...nnel must carry out the installation work Installation must be done in accordance with this installation manual Improper installation could result in water leakage electric shock or fire When installi...

Page 3: ...units Outdoor units and DOAS units can be in stalled either outdoors or indoors This unit is for indoor use Do not install the air conditioner or heat pump in the fol lowing locations a Where a miner...

Page 4: ...ze 9 7 4 Selection of refrigerant branch kits 10 7 5 System piping length limitations 11 8 Precautions on refrigerant piping 14 8 1 Caution for brazing 14 8 2 Connecting the refrigerant piping 14 8 3...

Page 5: ...binations of DOAS and VRV Indoor units is prohibited 1 2 2 Outdoor units combinations Standard combinations for REYQ T units are as indicated in tables below and right where REYQ192 456 consists of mu...

Page 6: ...ng and connecting the VRV IV REYQ T series outdoor units This manual has been prepared to ensure adequate maintenance of the unit and it will provide help in case problems occur INFORMATION The instal...

Page 7: ...does not disturb anyone and the location is selected according the applicable legislation All piping lengths and distances have been taken into consideration refer to 7 5 System piping length limitat...

Page 8: ...al precautions 4 3 Selecting a location in cold climates NOTE When operating the unit in a low outdoor ambient temperature be sure to follow the instructions described below The following images are f...

Page 9: ...a 2 50 b 19 5 8 500 c 2 50 d 19 5 8 500 e 3 7 8 100 f 23 5 8 600 h2 a Front side Suction side b h2 2 or more Service space h1 2 or more h1 b a 59 in 1500 mm b 19 5 8 in 500 mm In case of an installat...

Page 10: ...er of death by suffocation 1 Remove the unit from its packing material Take care not to damage the unit when unpacking 2 Remove the 4 bolts fixing the unit to its pallet 3 Make sure that all accessori...

Page 11: ...sher 6 5 Method for removing shipping plates The shipping plates installed over the compressor legs for protecting the unit during transport must be removed Proceed as shown in the figure and procedur...

Page 12: ...outside and which do not accumulate harmful sulfur oxidants dirt cutting oils moisture or other contamination Foreign materials inside pipes including oils for fabrication must be 0 14 gr 10 ft 30 mg...

Page 13: ...example REFNET joint a see 7 3 Selection of piping size Outdoor unit capacity type Kit name REYQ 72 96T type KHRP25A33T9 KHRP25A33TA REYQ 120 216T type KHRP25M72TU9 KHRP25M72TUA REYQ 240 456T type KHR...

Page 14: ...lly paying attention to the installation restrictions indicated in 8 Precautions on refrigerant piping on page 14 Example of connection Outdoor unit side Indoor unit side Branch Selector unit 1 2 1 Pi...

Page 15: ...anch 5 Actual piping length Actual piping length from the first REFNET joint or REFNET header to indoor unit 130 ft 40 m 8 Example 4 d g i 130 ft 40 m 7 b c m o 130 ft 40 m 8 b c p 130 ft 40 m 4 In th...

Page 16: ...alculated by doubling the piping length as upsized in 1 above is 3280 ft 1000 m The main pipe and lines that are not upsized should not be doubled a b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p q r s 3280...

Page 17: ...vents the creation of large quantities of oxidized film on the inside of the piping An oxidized film ad versely affects valves and compressors in the refrigerating system and prevents proper operation...

Page 18: ...e burner flame Liquid pipe stop valve Suction gas pipe stop value Protective plate Stop valves mounting plate High low pressure gas pipe stop valve 5 Cut off the lower part of the smaller pinched pipi...

Page 19: ...of the installer field piping 8 2 4 Precautions when connecting piping between outdoor units multiple outdoor units system To connect the piping between outdoor units an optional multi con nection pip...

Page 20: ...ally or vertically Mount the REFNET header so that it branches horizontally 2 Installation of the multi connection piping kit A 1 B 1 C D 15 C 4 3 4 in 120 mm D 19 11 16 in 500 mm Install the joints h...

Page 21: ...wiring and components must be installed by a licensed elec trician and must comply with relevant local and national regulations Be sure to use a dedicated power circuit Never use a power supply shared...

Page 22: ...460V 460V 460V 460V 460V 460V 460V 460V 460V 460V 460V 460V 460V 460V 460V 460V 460V 30 2A 38 0A 43 0A 55 0A 61 9A 30 2A 43 0A 38 0A 43 0A 38 0A 55 0A 43 0A 55 0A 55 0A 55 0A 55 0A 61 9A 61 9A 61 9A...

Page 23: ...1 F2 F1 F2 F1 F2 14 14 TOOUT DUNIT TO BS UNIT TO BS UNIT TOOUT DUNIT F1 F2 F1 F2 F1 F2 F1 F2 1 Master unit 2 Sub unit 3 Outdoor unit A 4 Outdoor unit B 5 Control box 1 6 Only REYQ TAYD Control box 2 7...

Page 24: ...units in the same piping system must be connected to terminals Q1 and Q2 TO MULTI UNIT Connecting the wires to the F1 F2 TO OUT D UNIT terminals results in system malfunction 2 Wiring to other system...

Page 25: ...lso make sure the thinner wire is on top securing the 2 wires simultaneously to the resin hook using the included clamp 1 Crimp style terminal Wire narrow Terminal block Wire thick Resin hook 9 6 Proc...

Page 26: ...microns Take care the pump oil never flow backward into the refrigerant pipe during the pump stops The system for airtight test and vacuum drying Referring to the figure below connect a nitrogen tank...

Page 27: ...ndoor unit this must be prevented by caulking the connections Refer to the following figure 3 4 5 1 6 1 2 1 Insulation material 2 Caulking etc 3 Liquid pipe stop valve 4 Suction gas pipe stop valve 5...

Page 28: ...lished and normal the segment indication state will be as follows default situation when shipped from factory When turning on the power supply the display flashes on and off First checks of the power...

Page 29: ...setting confirm again by pushing BS3 To leave the monitoring function push BS1 two times you will return to the default situation when shipped from factory 13 2 2 Operating the DIP switches By operati...

Page 30: ...al outdoor unit capacity type REYQ72 144T REYQ168 288T REYQ312 456T 295 3 ft 90 m 85 0 0 85 The smaller of D or 5 51 lbs 2 5 kg The smaller of D or 6 61 lbs 3 0 kg The smaller of D or 7 50 lbs 3 4 kg...

Page 31: ...lve B R Q Step 5 Open all outdoor unit stop valves Step 6 Proceed with automatic or manual charge A Automatic charge Not applicable in DOAS system B Manual charge Step 6a Push BS2 once 888 Push BS2 fo...

Page 32: ...r temperature out of range and E 3 outdoor temperature out of range In this case perform automatic charging procedure again See figure location of valves next page for more information refer to the te...

Page 33: ...age 28 To speed up the process of pre charging refrigerant for large systems it is recommended to first charge a portion of the refrigerant before performing automatic or manual charging This step is...

Page 34: ...or E 3 the ambient conditions are NOT favorable to execute the test run Push BS1 to finish the automatic charging procedure INFORMATION In case a malfunction code occurred during this automatic chargi...

Page 35: ...of 9 2 C a If average subcooling is low add charge to raise subcooling to 9 0 5 C The maximum additional charge is 4 4 lbs unit 2kg unit b If average subcooling is high remove charge to lower the sub...

Page 36: ...ditions Low noise operation can be set in mode 2 There are two methods to activate low noise operation of the outdoor unit system The first method is to enable an automatic low noise opera tion during...

Page 37: ...adaptor DTA104A61 62 is installed Default value 0 To activate this function change 2 12 1 2 18 Fan high static pressure setting In order to increase the static pressure the outdoor unit fan is deliver...

Page 38: ...tion 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...

Page 39: ...ving and optimum operation 2 92 Te target temperature upper limit Default value 1 Value 2 92 Te target temperature upper limit 0 L 1 M 2 H If Auto Te then use this setting to address different load pr...

Page 40: ...th setting 2 8 and 2 47 To activate the powerful comfort setting under heating opera tion change field setting 2 82 3 This setting is used in conjunction with setting 2 9 Quick Overshoot during heatin...

Page 41: ...E F A Indoor unit set temperature B Operation start C Operating time D Mild E Quick F Powerful Example Automatic mode during cooling A B 100 70 E Tc C D 120 F 49 C F 115 F 46 C 36 F 2 C A Virtual loa...

Page 42: ...f tests stand by periods etc INFORMATION Note that during the first running period of the unit required power in put may be higher This phenomenon originates from the compressor that requires a 50 hou...

Page 43: ...the malfunction code and retry operation The malfunction code which is displayed on the outdoor unit will indi cate a main malfunction code and a sub code The sub code indicates more detailed informat...

Page 44: ...sensor malfunction R14T A1P X19A Check connection on printed circuit board or actuator J5 01 03 05 Temperature sensor malfunction R12T A8P X15A Check connection on printed circuit board or actuator 18...

Page 45: ...28 02 09 12 Reversed or open power supply phase Check if power supply is within the range Correct phase order 23 26 29 U3 03 System test run not yet executed system operation not possible Execute sys...

Page 46: ...orrect refer ring to the wiring diagram for Branch Selector units and correct if there are any errors Check that the DIP switches settings are correct referring to the installation manual enclosed in...

Page 47: ...OTE Play it safe For protection of the printed circuit board touch the con trol box casing by hand in order to eliminate static electricity from your body before performing service 17 3 Service mode o...

Page 48: ...ingle unit system amount of refrigerant with which the system is charged before leav ing the factory Additional charging amount amount of re frigerant added locally in accordance with the length or di...

Page 49: ...Daikin Texas Technology Park 19001 Kermier Road Waller TX 77484 U S A 3P362438 5N EM16A005B 1912 HT 00_CV_3P362438 5N indd 2 2019 09 12 11 23 37...