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6 Charging refrigerant

Installation manual

11

50A
R32 Split series
3P600450-5L – 2021.12

WARNING

Connect the refrigerant piping securely before running the
compressor. If the refrigerant piping is NOT connected and
the stop valve is open when the compressor is run, air will
be  sucked  in.  This  will  cause  abnormal  pressure  in  the
refrigeration cycle, which may result in equipment damage
and even injury.

1

Connect the liquid refrigerant connection from the indoor unit to
the liquid stop valve of the outdoor unit.

c

a

b

a

b

a

Liquid stop valve

b

Gas stop valve

c

Service port

2

Connect  the  gas  refrigerant  connection  from  the  indoor  unit  to
the gas stop valve of the outdoor 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.

5.3

Checking the refrigerant piping

5.3.1

To check for leaks

NOTICE

Do NOT exceed the unit's maximum working pressure (see
"PS High" on the unit name plate).

NOTICE

ALWAYS  use  a  recommended  bubble  test  solution  from
your wholesaler.

NEVER use soap water:

▪ Soap  water  may  cause  cracking  of  components,  such

as flare nuts or stop valve caps.

▪ Soap  water  may  contain  salt,  which  absorbs  moisture

that will freeze when the piping gets cold.

▪ Soap  water  contains  ammonia  which  may  lead  to

corrosion  of  flared  joints  (between  the  brass  flare  nut
and the copper flare).

1

Charge the system with nitrogen gas up to a gauge pressure of
at  least  200  kPa  (2  bar).  It  is  recommended  to  pressurize  to
3000 kPa (30 bar) in order to detect small leaks.

2

Check  for  leaks  by  applying  the  bubble  test  solution  to  all
connections.

3

Discharge all nitrogen gas.

5.3.2

To perform vacuum drying

DANGER: RISK OF EXPLOSION

Do NOT start the unit if it is vacuumed.

NOTICE

Connect the vacuum pump to 

both

 the service ports of the

gas stop valves.

1

Vacuum the system until the pressure on the manifold indicates
−0.1 MPa (−1 bar).

2

Leave as is for 4-5 minutes and check the pressure:

If the pressure…

Then…

Does not change

There is no moisture in the
system. This procedure is
finished.

Increases

There is moisture in the
system. Go to the next step.

3

Vacuum the system for at least 2 hours to a manifold pressure
of −0.1 MPa (−1 bar).

4

After  turning  the  pump  OFF,  check  the  pressure  for  at  least
1 hour.

5

If  you  do  NOT  reach  the  target  vacuum  or  CANNOT  maintain
the vacuum for 1 hour, do the following:

▪ Check for leaks again.
▪ Perform vacuum drying again.

NOTICE

Make  sure  to  open  the  stop  valves  after  installing  the
refrigerant  piping  and  performing  vacuum  drying.  Running
the  system  with  the  stop  valves  closed  may  break  the
compressor.

6

Charging refrigerant

6.1

About the refrigerant

This  product  contains  fluorinated  greenhouse  gases.  Do  NOT  vent
gases into the atmosphere.

Refrigerant type: R32

Global warming potential (GWP) value: 675

NOTICE

Applicable  legislation  on 

fluorinated  greenhouse  gases

requires  that  the  refrigerant  charge  of  the  unit  is  indicated
both in weight and CO

2

 equivalent.

Formula  to  calculate  the  quantity  in  CO

2

  equivalent

tonnes:

  GWP  value  of  the  refrigerant  ×  total  refrigerant

charge [in kg] / 1000

Please contact your installer for more information.

WARNING: MILDLY FLAMMABLE MATERIAL

The refrigerant inside this unit is mildly flammable.

WARNING

The appliance shall be stored so as to prevent mechanical
damage and in a well-ventilated room without continuously
operating  ignition  sources  (e.g.  open  flames,  an  operating
gas  appliance,  or  an  operating  electric  heater).  The  room
size shall be as specified in the General safety precaution.

Содержание 2MXM40A2V1B

Страница 1: ...Installation manual R32 Split series English Installation manual R32 Split series 2MXM40A2V1B 2MXM50A2V1B ...

Страница 2: ...uina v platném znění Smjernice kako je izmijenjeno irányelv ek és módosításaik rendelkezéseit z późniejszymi poprawkami 18 19 20 21 22 23 24 25 Directivelor cu amendamentele respective Direktive z vsemi spremembami Direktiivid koos muudatustega Директиви с техните изменения Direktyvose su papildymais Direktīvās un to papildinājumos Smernice v platnom znení Değiştirilmiş halleriyle Yönetmelikler 01...

Страница 3: ...n sallittu lämpötila TS TSmin Alhaisin matalapainepuolen lämpötila L C TSmax Suurinta sallittua painetta PS vastaava kyllästyslämpötila M C Kylmäaine N Varmuuspainelaitteen asetus P bar Valmistusnumero ja valmistusvuosi katso mallin nimikilpi Maximální přípustný tlak PS K bar Minimální maximální přípustná teplota TS TSmin Minimální teplota na nízkotlaké straně L C TSmax Saturovaná teplota odpovída...

Страница 4: ...iunile noastre skladni z naslednjimi standardi in drugimi normativi pod pogojem da se uporabljajo v skladu z našimi navodili on vastavuses järgmis t e standardi te ga või teiste normatiivsete dokumentidega kui neid kasutatakse vastavalt meie juhenditele съответстват на следните стандарти или други нормативни документи при условие че се използват съгласно нашите инструкции atitinka žemiau nurodytus...

Страница 5: ...commissioning 15 10 2 Checklist during commissioning 16 10 3 Trial operation and testing 16 10 3 1 To perform a test run 16 11 Maintenance and service 16 12 Disposal 16 13 Technical data 16 13 1 Wiring diagram 16 13 1 1 Unified wiring diagram legend 16 13 2 Piping diagram Outdoor unit 17 1 About the documentation 1 1 About this document INFORMATION Make sure that the user has the printed documenta...

Страница 6: ...un air will be sucked in This will cause abnormal pressure in the refrigeration cycle which may result in equipment damage and even injury CAUTION Do NOT open the valves before flaring is complete This would cause refrigerant gas leakage DANGER RISK OF EXPLOSION Do NOT start the unit if it is vacuumed Charging refrigerant see 6 Charging refrigerant 411 WARNING The refrigerant inside the unit is mi...

Страница 7: ...tes after the power supply is turned off because of high voltage risk Please note that some sections of the electric component box are hot Make sure you do NOT touch a conductive section Do NOT rinse the unit This may cause electric shocks or fire DANGER RISK OF ELECTROCUTION Use this compressor on a grounded system only Turn the power off before servicing the compressor Reattach the switch box co...

Страница 8: ...nal installation site requirements of the outdoor unit in cold climates Protect the outdoor unit against direct snowfall and take care that the outdoor unit is NEVER snowed up a b c c d a Snow cover or shed b Pedestal c Prevailing wind direction d Air outlet It is recommended to provide at least 150 mm of free space below the unit 300 mm for heavy snowfall areas Additionally make sure the unit is ...

Страница 9: ...ble for refrigerant Use phosphoric acid deoxidised seamless copper for refrigerant Foreign materials inside pipes including oils for fabrication must be 30 mg 10 m Refrigerant piping diameter Class 40 Liquid piping 2 Ø6 4 mm 1 4 Gas piping 2 Ø9 5 mm 3 8 Class 50 Liquid piping 2 Ø6 4 mm 1 4 Gas piping 1 Ø9 5 mm 3 8 1 Ø12 7 mm 1 2 INFORMATION Usage of reducers might be required based on the indoor u...

Страница 10: ...side occupied spaces non permanent joints are NOT allowed for R32 refrigerant except for site made joints directly connecting the indoor unit to piping Site made joints directly connecting piping to indoor units shall be of non permanent type CAUTION Do NOT connect the embedded branch piping and the outdoor unit when only carrying out piping work without connecting the indoor unit in order to add ...

Страница 11: ...gas 5 3 2 To perform vacuum drying DANGER RISK OF EXPLOSION Do NOT start the unit if it is vacuumed NOTICE Connect the vacuum pump to both the service ports of the gas stop valves 1 Vacuum the system until the pressure on the manifold indicates 0 1 MPa 1 bar 2 Leave as is for 4 5 minutes and check the pressure If the pressure Then Does not change There is no moisture in the system This procedure i...

Страница 12: ...refrigerant piping is connected and checked leak test and vacuum drying 1 Connect the refrigerant cylinder to the service port 2 Charge the additional refrigerant amount 3 Open the gas stop valve 6 5 To fix the fluorinated greenhouse gases label 1 Fill in the label as follows b Contains fluorinated greenhouse gases 2 1 1 1 2 2 kg tCO2 eq GWP kg 1000 kg kg GWP XXX RXXX a f c d e a If a multilingual...

Страница 13: ...or lead wire k S92 white gas thermistor lead wire l Multimeter DC voltage range 7 1 Specifications of standard wiring components Component Power supply cable Voltage 220 240 V Phase 1 Frequency 50 Hz Wire type 3 core cable 2 5 mm2 H05RN F 60245 IEC 57 H07RN F 60245 IEC 66 3 core cable 4 0 mm2 H07RN F 60245 IEC 66 Interconnection cable indoor outdoor 4 core cable 1 5 mm2 or 2 5 mm2 and applicable f...

Страница 14: ...setting Prerequisite The main power supply MUST be turned off 1 Remove the top plate of the outdoor unit 2 screws on sides 2 Remove the electric box cover by sliding it Be careful not to bend the electric box hook 3 Cut the jumper J23 J26 J24 J23 J6 J22 J8 a b e c d a Top plate b Electric box cover c PCB jumpers d PCB e Electric box 4 Reinstall the electric box cover and the top plate in reverse o...

Страница 15: ...klist Next to the commissioning instructions in this chapter a general commissioning checklist is also available on the Daikin Business Portal authentication required The general commissioning checklist is complementary to the instructions in this chapter and can be used as a guideline and reporting template during the commissioning and hand over to the user NOTICE ALWAYS operate the unit with the...

Страница 16: ...nutes During cooling operation frost may form on the gas stop valve or other parts This is normal INFORMATION Even if the unit is turned OFF it consumes electricity When the power turns back on after a power break the previously selected mode will be resumed 11 Maintenance and service NOTICE General maintenance inspection checklist Next to the maintenance instructions in this chapter a general mai...

Страница 17: ...tor M C Compressor motor M F Fan motor M P Drain pump motor Symbol Meaning M S Swing motor MR MRCW MRM MRN Magnetic relay N Neutral n N Number of passes through ferrite core PAM Pulse amplitude modulation PCB Printed circuit board PM Power module PS Switching power supply PTC PTC thermistor Q Insulated gate bipolar transistor IGBT Q C Circuit breaker Q DI KLM Earth leak circuit breaker Q L Overloa...

Страница 18: ... j A B A B k l l m n o o p q r s t n m i h g c c 2MXM50 A Room A k Field piping liquid B Room B l Liquid stop valve a 4 way valve ON heating m Thermistor liquid b High pressure switch with automatic reset n Filter c Muffler o Motor operated valve d Discharge pipe thermistor p Muffler e Compressor q Outdoor air temperature thermistor f Accumulator r Heat exchanger g Branch pipe M Fan motor h Thermi...

Страница 19: ......

Страница 20: ...3P600450 5L 2021 12 Copyright 2021 Daikin Verantwortung für Energie und Umwelt ...

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