Daikin VRV HXY48TAVJU Installation And Operation Manual Download Page 25

Installation and operation manual

24

HXY48TAVJU

VRV System indoor unit

3P616151-1A – 2021.12

8.5.

Final check and test run

8.5.1.

Final check

Before switching on the unit, read the following:

When the complete installation and all necessary settings have
been carried out, be sure that all panels of the unit are closed. If
this is not the case, inserting your hand through the remaining
openings can cause serious injury due to electrical and hot parts
inside the unit.

The service  panel  of the switch  box may  only  be opened by  a
licensed electrician for maintenance purposes.

In order to purge most of the air out of the system perform a pump
operation as described below:

1

Change field setting [E-04]
The default value is 0. 

When changing the setting to 1, the pump will operate at low
speed (pump only, the unit will not operate).

When changing the field setting to 2, the pump will operate at
high speed.

2

When air purging is finished, change the field setting back to 0.

It  is  the  responsibility  of  the  installer  to  make  sure  that  the  air  is
purged out of the unit and system.

Be  sure  that  all  stop  valves  are  open.  (Refer  to  vacuuming
procedure of the outdoor unit)

Be sure that all water valves are open.

8.5.2.

System test run

Before you can check test operation of each indoor unit separately,
you have to do the system test run. System test run is explained in
the installation manual of the outdoor unit. This is an automatic test
run which can take some time.

When the system test run is finished, it is possible to do an individual
test  run  as  described  in  "8.5.3. Indoor  unit  individual  test  run"  on
page 24.  During  this  test  run,  the  installer  should  check  indicated
items.

8.5.3.

Indoor unit individual test run

The  installer  is  obliged to  verify correct operation  of  the indoor  and
outdoor unit after installation. Therefor a test run must be performed
according  to  the  procedures  described  below.  At  any  time  it  is
possible to check correct operation of space heating/cooling.

Temperature read-out mode

On the user interface, the actual temperatures can be displayed.

1

Push and hold the 

ba

 button for 5 seconds.

The leaving water temperature is displayed (icons 

l

 and 

=

and 

é

 are blinking).

2

Use the 

pi

 and 

pj

 buttons to display:

The  entering  water  temperature  (icons 

l

  and 

=

  are

blinking and the 

é

 icon is flashing slowly).

The indoor temperature (icons 

l

 and 

=

 are blinking).

The outdoor temperature (icons 

l

 and 

u

 are blinking).

3

Push  the 

ba

  button  again  to  leave  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
the user interface read-out mode and write down the displayed
values. See "Temperature read-out mode" on page 24.

2

Push the 

z

 button 4 times so the 

t

 icon will be displayed.

3

Perform  the  test  as  follows  (when  no  action  is  performed,  the
user interface will return to normal mode after 10 seconds or by
pressing the 

z

 button once):

To test the space heating/cooling operation push the 

y

 button

to start the test run operation.

4

The test run operation will end automatically after 30 minutes or
when reaching the set temperature. The test run operation can
be stopped manually by pressing the 

z

 button once. If there are

misconnections  or  malfunctions,  an  malfunction  code  will  be
displayed  on  the  user  interface.  Otherwise,  the  user  interface
will return to normal operation.

5

To resolve the malfunction codes, see "8.6.2. Malfunction codes
list" on page 25.

6

Check the leaving water and entering water temperature through
the  user  interface  read-out  mode  and  compare  them  with  the
values  noted  with  step  1.  After  20  minutes  of  operation  an
increase/decrease  of  the  values  should  confirm  the  space
heating/cooling operation.

NOTE

When  using  thermostatic  radiator  valves,  make  sure  to
open all valves during air purging operation.

INFORMATION

When the indoor units and outdoor unit are powered on for
the  first  time,  an  initialisation  takes  place.  This  will  take
maximum 12 minutes.

When using the user interface during the initialisation, an
malfunction code (

UH

) can be displayed.

INFORMATION

During the first start up of the unit (the first 50 hours of
compressor  running),  it  might  happen  that  the  noise
level  of  the  unit  is  higher  than  mentioned  in  the
technical  specifications.  This  is  not  an  abnormal
event.

Start  up  of  the  unit  in  space  heating  mode  is  only
possible  when  the  outdoor  ambient  temperature  is
lower than 68°F (20°C).

INFORMATION

The operation mode can not be selected on the hydrobox.
The  hydrobox  follows  the  operation  mode  of  the  master
VRV  DX  Indoor  Unit.  Refer  to  outdoor  unit  manual  for
further information.

Make  sure  to  set  the  VRV  DX  indoor  unit  as  the
changeover master.

INFORMATION

To display the last resolved malfunction code, push the 

z

button 1 time. Push the 

z

 button again 4 times to return to

normal mode.

INFORMATION

It is not possible to perform a test run if a forced operation
from  the  outdoor  unit  is  in  progress.  Should  forced
operation be started during a test run, the test run will be
aborted.

01_EN_3P616151-1A.fm  24 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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