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3 About the box

Installation manual

6

4MWXM-A9

R32 Split series

3P600450-7T – 2022.09

WARNING

If the supply cord is damaged, it MUST be replaced by the
manufacturer,  its  service  agent  or  similarly  qualified
persons in order to avoid a hazard.

WARNING

Do NOT connect the power supply to the indoor unit. This
could result in electrical shock or fire.

WARNING

▪ Do  NOT  use  locally  purchased  electrical  parts  inside

the product.

▪ Do  NOT  branch  the  power  supply  for  the  drain  pump,

etc.  from  the  terminal  block.  This  could  result  in
electrical shock or fire.

WARNING

Keep  the  interconnection  wiring  away  from  copper  pipes
without thermal insulation as such pipes will be very hot.

DANGER: RISK OF ELECTROCUTION

All  electrical  parts  (including  thermistors)  are  powered  by
the power supply. Do NOT touch them with bare hands.

DANGER: RISK OF ELECTROCUTION

Disconnect  the  power  supply  for  more  than  10  minutes,
and  measure  the  voltage  at  the  terminals  of  main  circuit
capacitors  or  electrical  components  before  servicing.  The
voltage MUST be less than 50 V DC before you can touch
electrical  components.  For  the  location  of  the  terminals,
see the wiring diagram.

Finishing the outdoor unit installation (see 

"8 Finishing the

outdoor unit installation"

 [

4

 13])

DANGER: RISK OF ELECTROCUTION

▪ Make sure that the system is earthed properly.

▪ Turn OFF the power supply before servicing.

▪ Install  the  switch  box  cover  before  turning  ON  the

power supply.

Maintenance and service (see 

"9 Maintenance and

service"

 [

4

 13])

DANGER: RISK OF ELECTROCUTION

DANGER: RISK OF BURNING/SCALDING

WARNING

▪ Before  carrying  out  any  maintenance  or  repair  activity,

ALWAYS  switch  off  the  circuit  breaker  on  the  supply
panel, remove the fuses or open the protection devices
of the unit.

▪ Do NOT touch live parts for 10 minutes 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  cover  and  service  lid  after

servicing.

CAUTION

ALWAYS wear safety glasses and protective gloves.

DANGER: RISK OF EXPLOSION

▪ Use a pipe cutter to remove the compressor.

▪ Do NOT use the brazing torch.

▪ Use approved refrigerants and lubricants only.

DANGER: RISK OF BURNING/SCALDING

Do NOT touch the compressor with bare hands.

3

About the box

Keep the following in mind:

▪ At  delivery,  the  unit  MUST  be  checked  for  damage  and

completeness.  Any  damage  or  missing  parts  MUST  be  reported
immediately to the claims agent of the carrier.

▪ Bring  the  packed  unit  as  close  as  possible  to  its  final  installation

position to prevent damage during transport.

▪ Prepare  in  advance  the  path  along  which  you  want  to  bring  the

unit to its final installation position.

3.1

Outdoor unit

3.1.1

To remove the accessories from the
outdoor unit

Make sure you have all following accessories delivered with the unit:

a

b

c

d

e

i

j

g

h

f

a

Outdoor unit installation manual

b

General safety precautions

c

Fluorinated greenhouse gases label

d

Multilingual fluorinated greenhouse gases label

e

Energy label

f

Screw bag. The screws will be used for fixing the
electrical wire anchor bands.

g

Drain cap (small)

h

Drain cap (large)

i

Reducer assembly

j

Drain socket

4

Unit installation

WARNING

Installation  shall  be  done  by  an  installer,  the  choice  of
materials  and  installation  shall  comply  with  the  applicable
legislation. In Europe, EN378 is the applicable standard.

Summary of Contents for 4MWXM52A2V1B9

Page 1: ...Installation manual R32 Split series English Installation manual R32 Split series 4MWXM52A2V1B9...

Page 2: ...a f r i henhold til bestemmelsene i noudattaen s nn ksi za dodr en ustanoven prema odredbama k veti a z zgodnie z postanowieniami urm nd prevederile 19 20 21 22 23 24 25 v skladu z dolo bami vastavalt...

Page 3: ...a TS TSmin Alhaisin matalapainepuolen l mp tila L C TSmax Suurinta sallittua painetta PS vastaava kyll stysl mp tila M C Kylm aine N Varmuuspainelaitteen asetus P bar Valmistusnumero ja valmistusvuosi...

Page 4: ...Commissioning 15 11 1 Checklist before commissioning 15 11 2 Checklist during commissioning 15 11 3 Trial operation and testing 15 11 3 1 About wiring error check 15 11 3 2 To perform a test run 16 1...

Page 5: ...he 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 abno...

Page 6: ...n devices of the unit Do NOT touch live parts for 10 minutes 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...

Page 7: ...ambient temperatures within the following ranges unless otherwise specified in the operation manual of the connected indoor unit DX operation range Cooling mode Heating mode 10 46 C DB 15 24 C DB DHW...

Page 8: ...ring refrigerant piping 5 1 1 Refrigerant piping requirements CAUTION Piping and joints of a split system shall be made with permanent joints when inside an occupied space except joints directly conne...

Page 9: ...ed taking into account the following requirements inside occupied spaces non permanent joints are NOT allowed for R32 refrigerant except for site made joints directly connecting the indoor unit to pip...

Page 10: ...est solution to all connections 3 Discharge all nitrogen gas 5 3 2 To perform vacuum drying DANGER RISK OF EXPLOSION Do NOT open the stop valves before the vacuum drying is finished NOTICE Connect the...

Page 11: ...vent these gases into the atmosphere When charging refrigerant ALWAYS use protective gloves and safety glasses Prerequisite Before charging refrigerant make sure the refrigerant piping is connected a...

Page 12: ...ctor d MR30_A MR30_B suspend lead wire connectors e S40 thermal overload relay lead wire and high pressure switch connector f Multimeter DC voltage range g S90 S92 S93 thermistor lead wire connector h...

Page 13: ...ox cover before turning ON the power supply 1 Insulate and fix the refrigerant piping and cables as follows g b a f e c d a Gas pipe b Gas pipe insulation c Interconnection cable d Field wiring if app...

Page 14: ...iority in the following cases Operation mode priority If the priority room function is set on an indoor unit all other indoor units enter the standby mode Priority during high power operation If the i...

Page 15: ...nsate water might drip The indoor unit receives the signals of the user interface The specified wires are used for the interconnection cable The fuses circuit breakers or locally installed protection...

Page 16: ...unit for about 20 minutes The difference should be more than 8 C cooling or 20 C heating 3 First check operation of each unit individually then check simultaneous operation of all indoor units Check b...

Page 17: ...ssor 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 Print...

Page 18: ...ler v Room A B C and Domestic hot water tank W c Heat exchanger thermistor m Discharge pipe thermistor w Field piping liquid d Refnet header n Compressor x Field piping gas e Fan motor o Accumulator y...

Page 19: ......

Page 20: ...3P600450 7T 2022 09 Copyright 2022 Daikin Verantwortung f r Energie und Umwelt...

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