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19 Technical data

Installation and operation manual

37

RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452190-1D – 2020.10

After correcting the abnormality, press BS3 to reset the malfunction
code and retry operation.

The  malfunction  code  which  is  displayed  on  the  outdoor  unit  will
indicate  a  main  malfunction  code  and  a  sub  code.  The  sub  code
indicates more detailed information about the malfunction code. The
malfunction code will be displayed intermittent.

Example:

Code

Example

Main code

Sub code

With  an  interval  of  1  second,  the  display  will  switch  between  main
code and sub code.

19

Technical data

▪ A 

subset

  of  the  latest  technical  data  is  available  on  the  regional

Daikin website (publicly accessible).

▪ The 

full  set

  of  latest  technical  data  is  available  on  the  Daikin

Business Portal (authentication required).

19.1

Service space: Outdoor unit

Make  sure  the  space  around  the  unit  is  adequate  for  servicing  and
the  minimum  space  for  ventilation  is  available  (refer  to  the  figure
below).

(mm)

≥500

≥500

≥900

≥900

≥20

≥20

≥20

≥20

≥20

≥20

F

(mm)

≥300

F

Front side

INFORMATION

Further  specifications  can  be  found  in  the  technical
engineering data.

19.2

Piping diagram: Outdoor unit

A

C

D

B

B

B

SV

SV

SV

M

SV

SV

HPS

SV

SV

SENPH

SENPL

4D108945A

A

Charge port

B

Stop valve (with service port 

7.9 mm flare

connection)

C

Cooling water inlet

D

Cooling water outlet

Charge port / Service port

Filter

Check valve

Pressure relief valve

Solenoid valve

Capillary tube

Electronic expansion valve

4‑way valve

Propeller fan

Port (for sensor)

Low/high pressure sensor

High pressure switch

Oil separator

Accumulator

Summary of Contents for VRV IV RWEYQ-T9

Page 1: ...lation and operation manual VRV IV water cooled system air conditioner English Installation and operation manual VRV IV water cooled system air conditioner RWEYQ8T9Y1B RWEYQ10T9Y1B RWEYQ12T9Y1B RWEYQ1...

Page 2: ...8 19 20 21 22 23 24 25 Directivelor cu amendamentele respective Direktive z vsemi spremembami Direktiivid koos muudatustega Direktyvose su papildymais Direkt v s un to papildin jumos Smernice v platno...

Page 3: ...S vastaava kyll stysl mp tila M C Kylm aine N Varmuuspainelaitteen asetus P bar Valmistusnumero ja valmistusvuosi katso mallin nimikilpi Maxim ln p pustn tlak PS K bar Minim ln maxim ln p pustn teplot...

Page 4: ...s not spin 13 8 2 15 Symptom The display shows 88 13 8 2 16 Symptom The compressor in the outdoor unit does not stop after a short heating operation 13 8 2 17 Symptom The inside of an outdoor unit is...

Page 5: ...r reference guide Preparation of the installation reference data Detailed step by step instructions and background information for basic and advanced usage Format Digital files on http www daikineurop...

Page 6: ...carrying wires are tautened before the earth wire is in case the power supply is pulled loose from the stress relief CAUTION Do NOT perform the test operation while working on the indoor units When pe...

Page 7: ...ation CAUTION NEVER touch the internal parts of the controller Do NOT remove the front panel Some parts inside are dangerous to touch and appliance problems may happen For checking and adjusting the i...

Page 8: ...ices ventilate the room and contact the dealer where you purchased the unit Do not use the system until a service person confirms that the portion where the refrigerant leaks is repaired 4 About the s...

Page 9: ...ch 6 hours before operation 6 2 2 About cooling heating fan only and automatic operation Changeover cannot be made with a user interface whose display shows change over under centralised control refer...

Page 10: ...humidity in your room with minimal temperature decrease minimal room cooling The micro computer automatically determines temperature and fan speed cannot be set by the user interface The system does...

Page 11: ...ing for damage If damaged the unit may fall and result in injury NOTICE Do NOT wipe the controller operation panel with benzine thinner chemical dust cloth etc The panel may get discoloured or the coa...

Page 12: ...unit manual Malfunction Measure The system operates but cooling or heating is insufficient Check if air inlet or outlet of outdoor or indoor unit is not blocked by obstacles Remove any obstacles and m...

Page 13: ...stop Operation automatically restarts when the noise ceases 8 2 9 Symptom Noise of air conditioners Indoor unit A zeen sound is heard immediately after the power supply is turned on The electronic ex...

Page 14: ...b Installation manual and operation manual c Additional refrigerant charge label d Installation information sticker e Fluorinated greenhouse gases label f Multilingual fluorinated greenhouse gases la...

Page 15: ...ratures from 21 C DB to 32 C DB or 14 C WB to 25 C WB The ambient temperature around the unit should be above 0 C DB and below 40 C DB Relative humidity around the unit should be below 80 The water te...

Page 16: ...l the water piping and field wiring front plate B has to be removed 13 2 2 To open the electrical component box of the outdoor unit NOTICE Do NOT apply excessive force when opening the electronic comp...

Page 17: ...ery Determine the proper size using the following tables and reference figure only for indication In case of heat pump system A B B B C D F G E x y b a 3 1 2 4 5 1 2 VRV DX indoor unit 3 Branch select...

Page 18: ...ed on the total capacity of the connected indoor units only in case RA DX indoor units are connected Total capacity index of connected indoor units Piping outer diameter size mm Gas pipe Liquid pipe 2...

Page 19: ...ll the following restriction conditions A B C a c b A B C a To indoor units b Outdoor unit multi connecting piping kit first branch c Outdoor unit multi connecting piping kit second branch 14 2 Prepar...

Page 20: ...on the piping between this shut off valve and the outdoor unit for cleaning by chemicals For cleaning and water draining of the outdoor unit long period of non use or during non use in winter install...

Page 21: ...the design flow rate calculated by the hydronic engineer when designing the building system Correct valve selection is done when following conditions are met B C AND E A D For further selection requir...

Page 22: ...ay enter the machine 14 3 6 Using the stop valve and service port To handle the stop valve Take the following guidelines into account Make sure to keep the appropriate stop valves open during operatio...

Page 23: ...nect the vacuuming recovery unit through a manifold to the service port of all stop valves p p R410A N2 b c e a f g h d A C 1 D B a Pressure reducing valve b Nitrogen c Weighing scales d Refrigerant R...

Page 24: ...ant 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 le...

Page 25: ...for 1 hour the system may contain too much moisture In that case break the vacuum by pressurising with nitrogen gas to a gauge pressure of 0 05 MPa 0 5 bar and repeat steps 1 to 3 until all moisture h...

Page 26: ...additional 0 5 kg of refrigerant per outdoor unit In case of heat recovery system Formula R X1 22 2 0 37 X2 19 1 0 26 X3 15 9 0 18 X4 12 7 0 12 X5 9 5 0 059 X6 6 4 0 022 1 04 A C R Additional refriger...

Page 27: ...ks to each outdoor unit NOTICE The refrigerant charging port is connected to the piping inside the unit The unit s internal piping is already factory charged with refrigerant so be careful when connec...

Page 28: ...flow rate is correct If not stop the pump immediately and carry out troubleshooting 14 6 4 To insulate the water piping The outdoor water piping MUST be insulated to prevent condensation during heatin...

Page 29: ...g In case of heat recovery system B i a b f c f e g d c h j j i a Field power supply with earth leakage protector b Main switch c Earth connection d Outdoor unit e Indoor unit f User interface g BS un...

Page 30: ...es using finishing tape as shown in figure below b a f c d f e f a Liquid pipe b Gas pipe c Finishing tape d High pressure low pressure gas pipe e Transmission wiring F1 F2 f Insulator 15 6 To route a...

Page 31: ...e closed valve Select a flow switch contact of at least 15 V DC 1 mA Connect the flow switch to X2M terminals 5 and 6 In case of a multi outdoor unit system install one or more flow switches depending...

Page 32: ...ng the current field setting value is possible In general normal operation can be resumed without special intervention after changing field settings Some field settings are used for special operation...

Page 33: ...atus of the unit What How Changing and accessing the setting in mode 1 Once mode 1 is selected push BS1 one time you can select the wanted setting It is done by pushing BS2 Accessing the selected sett...

Page 34: ...m 3 Each unit has a pump valve pump is OFF when slave unit does not operate Minimum water flow rate limit control To change the minimum water flow rate limit of the variable flow system change the set...

Page 35: ...tion Check that the unit is properly installed to avoid abnormal noises and vibrations when starting up the unit Field wiring Be sure that the field wiring has been carried out according to the instru...

Page 36: ...s 17 4 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 set...

Page 37: ...site publicly accessible The full set of latest technical data is available on the Daikin Business Portal authentication required 19 1 Service space Outdoor unit Make sure the space around the unit is...

Page 38: ...pressor Double tube heat exchanger Liquid receiver Thermistor 20 Disposal NOTICE Do NOT try to dismantle the system yourself dismantling of the system treatment of the refrigerant oil and other parts...

Page 39: ......

Page 40: ...4P452190 1D 2020 10 Copyright 2017 Daikin 4P452190 1 D 0000000 Verantwortung f r Energie und Umwelt...

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