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Installation and operation manual

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HXY48TAVJU

VRV System indoor unit

3P616151-1A – 2021.12

2.2.

Scope of the manual

This manual does NOT include the selection procedure and the water
system design procedure. Only some precautions and tips and tricks
about the design of the water circuit are given in a separate chapter
of this manual.

Once  the  selection  is  done  and  the  water  system  is  designed,  this
manual  describes  the  procedures  for  handling,  installing  and
connecting the HXY48TAVJU unit. This manual has been prepared to
ensure adequate maintenance of the unit, and it will provide help if
problems occur.

2.3.

Documentation set

This  document  is  part  of  a  documentation  set.  The  complete  set
consists of:

Latest revisions of the supplied documentation may be available on
the regional Daikin website or via your dealer.

3.

About the box

At delivery, the unit must be checked for damage. Any damage
must be reported immediately to the carrier’s claims agent.

Bring the packed unit as close as possible to its final installation
position to prevent damage during transport.

3.1.

Indoor unit

3.1.1.

To unpack the indoor unit

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Installation/operation manual

3.1.2.

To remove the accessories from the indoor unit

The installation/operation manual indoor unit is located in the upper
part  of  the  box.  Follow  the  procedure  below  to  remove  the  other
accessories.

Unfix front panel.

Tilt the bottom side of the front panel upwards and remove it.

Document

Contains…

Format

Indoor unit 

installation/operation 

manual

Installation and 

operator instructions

Indoor unit 

installation/operation 

manual

Outdoor unit installation 

manual

See info delivered with 

outdoor unit.

INFORMATION

Do  NOT  throw  away  the  upper  cardboard  cover.  On  the
inside  of  the  cardboard  cover,  the  installation  pattern  is
printed.

WARNING

Tear apart and throw away plastic packaging bags so that
children  will  not  play  with  them.  Children  playing  with
plastic bags face danger of death by suffocation.

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01_EN_3P616151-1A.fm  4 ページ  2021年12月14日 火曜日 午後1時29分

Summary of Contents for VRV HXY48TAVJU

Page 1: ...English Fran ais Espa ol INSTALLATION AND OPERATION MANUAL HXY48TAVJU System indoor unit 00_CV_3P616151 1A fm 1...

Page 2: ...rk 14 7 3 2 System overview of field wiring 15 7 3 3 Requirements 15 7 3 4 To open the switch box cover 15 7 3 5 To connect the electrical wiring on the indoor unit 15 7 3 6 To connect the user interf...

Page 3: ...fied personnel must carry out the installation work Installation must be done in accordance with this installation manual Improper installation may result in water leakage electric shock or fire When...

Page 4: ...additional refrigerant must be charged in its liquid state If the refrigerant is charged in a state of gas its composition can change and the system will not work properly The indoor unit is for R410...

Page 5: ...mage must be reported immediately to the carrier s claims agent Bring the packed unit as close as possible to its final installation position to prevent damage during transport 3 1 Indoor unit 3 1 1 T...

Page 6: ...ntification 4 2 1 Identification label Indoor unit Location Model identification Modelname HXY48TAVJU 4 3 Possible combinations of unit and options 4 3 1 List of options for indoor unit User interface...

Page 7: ...eaving water temperature zone B One single room C One single room a Outdoor VRV b VRV Direct Expansion DX Indoor unit cassette c HXY48 d Optional EKRUAHTB user interface main e Refrigerant piping f Wa...

Page 8: ...kage 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 Do not climb sit or...

Page 9: ...e is 50 F 10 C cooling The maximum water pressure is 44 psi 3 bar Provide adequate safeguards in the water circuit to ensure that the maximum pressure is NOT exceeded All installed piping and piping a...

Page 10: ...r volume Check that the total water volume in the installation is minimum 5 3 gallon 20 liter the internal water volume of the indoor unit NOT included a Outdoor unit VRV b Indoor unit HXY48 c Heat ex...

Page 11: ...35 H 10 4 35 0 10 4 35 psi 0 3 bar The corresponding maximum water volume at 4 35 psi 0 3 bar is 108 3 gal 410 l See the graph in the chapter above Because 92 gal 350 l is lower than 108 3 gal 410 l...

Page 12: ...1 Indoor unit power supply 2 GND a a Refer to name plate on the indoor unit 2 Malfunction output 2 0 3 A b b Minimum cable section 0 75 mm AWG18 3 Operation ON OFF output 2 0 3 A b 4 Cooling heating...

Page 13: ...he water outlet Mind their position Orientation of the integrated drain valves is important for servicing 1 Install the shut off valves on the water pipes a Water inlet b Water outlet c Adaptors 2 Scr...

Page 14: ...w switch During filling it may not be possible to remove all the air from the circuit Remaining air will be removed through the automatic air purge valves during the initial operating hours of the sys...

Page 15: ...50 50 Total hardness mg CaCO3 l 200 70 70 Calcium hardness mg CaCO3 l 150 50 Ionic state silica mg SiO2 l 50 30 30 Reference items Iron mg Fe l 1 0 0 3 1 0 0 3 Copper mg Cu l 0 3 0 1 1 0 0 1 Sulfate i...

Page 16: ...nd sharp edges 7 3 6 To connect the user interface The unit is equipped with a user interface offering a user friendly way to set up use and maintain the unit Before operating the user interface follo...

Page 17: ...ape of the backside of the user interface by overtightening the mounting screws a b P1 P2 a Rear part of the user interface b Front part of the user interface 1 2 1 NOTE Be careful NOT to distort the...

Page 18: ...is properly installed to avoid abnormal noises and vibrations when starting up the unit 6 Damaged equipment Check the inside of the unit on damaged components or squeezed pipes 7 Refrigerant leak Chec...

Page 19: ...he select field setting 5 Save the new value by pressing the pr button 6 Repeat step 2 through 4 to change other field settings as required 7 When finished press the z button to exit FIELD SET MODE 8...

Page 20: ...room temperature During operation During schedule timer operation the operation LED is lit continuously When pushing the y button The schedule timer for space heating will stop and will not start agai...

Page 21: ...roller and the real set point E g a positive shift value means that the real temperature set point will be higher than the calculated set point It is advised to use the weather dependent set point bec...

Page 22: ...l be used for the logic Eg when the ambient temperature is high during cooling mode the logic will correct the measured value of the leaving water thermistor to a lower value to take into account infl...

Page 23: ...01 High ambient temperature Hi_A 59 15 50 68 10 20 1 8 1 F C 02 Set point at low ambient temperature Lo_Ti 104 40 77 176 25 80 1 8 1 F C 03 Set point at high ambient temperature Hi_Ti 77 25 77 176 25...

Page 24: ...03 Set point cooling leaving water minimum temperature 50 10 41 64 5 18 1 8 1 F C 04 Not applicable Do not change the default value 0 d Settings are not applicable E Service mode 00 Not applicable Do...

Page 25: ...ave this mode If no button is pressed the user interface leaves the display mode after 10 seconds Procedure for space heating cooling 1 Check the leaving water and entering water temperature through t...

Page 26: ...onent box are hot Make sure you do not touch a conductive section Do not rinse the unit This may cause electric shocks or fire Play it safe Touch a metal part by hand such as piping sheet metal in ord...

Page 27: ...ace cooling heating operation Tick when checked Q Explain to the user what sytem is installed on site Complete the fill in below for each unit The information may be useful for the user in future serv...

Page 28: ...PECTION REQUIRED k and l These icons indicate that inspection is required on the installation Consult your dealer 11 TEMPERATURE DISPLAY 9 The display shows the current temperature of the installation...

Page 29: ...ERATURE ADJUST BUTTONS bi and bj These buttons are used to adjust the leaving water temperature set point in normal operation mode or in schedule timer programming mode If the controller is set to per...

Page 30: ...int The operation LED 0 lights up 2 Use the bi and bj buttons to set the desired room temperature Temperature range for heating 61 90 F 16 32 C room temperature In order to avoid overheating space hea...

Page 31: ...is enabled 3 Press the ba button to deactivate weather dependent set point operation The bi and bj buttons are used to set the leaving water temperature Field settings define the parameters for the we...

Page 32: ...g schedule timer can be programmed in 2 different ways Based on the temperature set point leaving water temperature and room temperature Based on the ON OFF instruction The desired method is set throu...

Page 33: ...ation LED will stop working However the schedule timer icon will stay displayed When pushing the pr button The schedule timer for space heating will be stopped and will not start again The schedule ti...

Page 34: ...This form can help you define the required actions for each day Take your time to enter all data accurately Try to program the actions in a chronological way start with action 1 for the first action...

Page 35: ...g water temperature 9 Use the bi and bj buttons to set the room temperature 10 Use the ba button to select x to switch cooling and the user interface off 11 Repeat steps 6 to 10 to program the other a...

Page 36: ...out as follows 1 Press the button to enter the programming consulting mode 2 Select the operation mode you would like to consult by means of the pi and pj buttons The actual mode is blinking 3 Press t...

Page 37: ...e unit There are 2 inputs that allow Remote thermo on off Remote unit on off For more details about this option kit refer to the wiring diagram of the unit 10 3 12 Operating the optional user interfac...

Page 38: ...field settings as required 7 When finished press the z button to exit FIELD SET MODE NOTE Changes made to a specific field setting are only stored when the pr button is pressed Navigating to a new fi...

Page 39: ...e this procedure for resetting the safety is not successful contact your local dealer For other malfunction codes which may be displayed during the system test run or operation see the installation ma...

Page 40: ...0A 2 1 8 F1U SS1 4 2 X12A 1 4 1 1 F1U 6 1 2 NORM EMG R1T BRN 1 208 230V 60Hz 2 2 X1M 2 X27A 2 2 YLW 3 K6R WHT 2 X5A 2 1 C3 X15A K1R C2 S1L HAP 2 X1M X1A 5 X15A 1 1 X14A BLU BLU 2 2 X20A X18A MS A1P L2...

Page 41: ...refrigerant of oil and of other parts must be done in accordance with the applicable legislation Do not try to dismantle the system yourself the dismantling of the system treatment of the refrigerant...

Page 42: ...Daikin Texas Technology Park 19001 Kermier Road Waller TX 77484 U S A 3P616151 1A EM21A030 2021 12 00_CV_3P616151 1A fm 2...

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