Daikin RXJ42A2V1B, Installation Manual

Table of Contents

Installation manual

4

RXJ42+50A

R32 split series

3P512025-12X – 2021.12

Table of Contents

1 About the documentation

4

1.1

About this document..................................................................

4

2 Specific installer safety instructions

4

3 About the box

6

3.1

Outdoor unit...............................................................................

6

3.1.1

To remove the accessories from the outdoor unit.......

6

4 Unit installation

6

4.1

Preparing the installation site ....................................................

7

4.1.1

Installation site requirements of the outdoor unit ........

7

4.1.2

Additional installation site requirements of the
outdoor unit in cold climates .......................................

7

4.2

Mounting the outdoor unit..........................................................

7

4.2.1

To provide the installation structure ............................

7

4.2.2

To install the outdoor unit............................................

8

4.2.3

To provide drainage ....................................................

8

5 Piping installation

8

5.1

Preparing refrigerant piping .......................................................

8

5.1.1

Refrigerant piping requirements..................................

8

5.1.2

Refrigerant piping insulation .......................................

9

5.1.3

Refrigerant piping length and height difference ..........

9

5.2

Connecting the refrigerant piping ..............................................

9

5.2.1

To connect the refrigerant piping to the outdoor unit ..

9

5.3

Checking the refrigerant piping .................................................

9

5.3.1

To check for leaks.......................................................

9

5.3.2

To perform vacuum drying .......................................... 10

6 Charging refrigerant

10

6.1

About the refrigerant..................................................................

10

6.2

To determine the additional refrigerant amount ........................

10

6.3

To determine the complete recharge amount ...........................

10

6.4

To charge additional refrigerant ................................................

10

6.5

To fix the fluorinated greenhouse gases label...........................

10

7 Electrical installation

11

7.1

Specifications of standard wiring components ..........................

11

7.2

To connect the electrical wiring to the outdoor unit ...................

11

8 Finishing the outdoor unit installation

12

8.1

To finish the outdoor unit installation.........................................

12

9 Configuration

12

9.1

Facility setting............................................................................

12

9.1.1

To set the facility mode ............................................... 12

10 Commissioning

12

10.1

Checklist before commissioning ................................................

13

10.2

Checklist during commissioning ................................................

13

10.3

To perform a test run .................................................................

13

11 Maintenance and service

13

12 Troubleshooting

13

12.1

Fault diagnosis using LED on outdoor unit PCB .......................

13

13 Disposal

14

14 Technical data

14

14.1

Wiring diagram ..........................................................................

14

14.1.1

Unified wiring diagram legend..................................... 14

14.2

Piping diagram ..........................................................................

15

14.2.1

Piping diagram: Outdoor unit ...................................... 15

1

About the documentation

1.1

About this document

INFORMATION

Make sure that the user has the printed documentation and
ask him/her to keep it for future reference.

Target audience

Authorised installers

WARNING

Make  sure  installation,  servicing,  maintenance,  repair  and
applied materials follow the instructions from Daikin and, in
addition,  comply  with  applicable  legislation  and  are
performed  by  qualified  persons  only.  In  Europe  and  areas
where  IEC  standards  apply,  EN/IEC  60335-2-40  is  the
applicable standard.

INFORMATION

This  document  only  describes  installation  instructions
specific  to  the  outdoor  unit.  For  installation  of  the  indoor
unit  (mounting  the  indoor  unit,  connecting  the  refrigerant
piping to the indoor unit, connecting the electrical wiring to
the indoor unit …), see the installation manual of the indoor
unit.

Documentation set

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

▪

General safety precautions:

▪ Safety instructions that you MUST read before installing

▪ Format: Paper (in the box of the outdoor unit)

▪

Outdoor unit installation manual:

▪ Installation instructions

▪ Format: Paper (in the box of the outdoor unit)

▪

Installer reference guide:

▪ Preparation of the installation, reference data,…

▪ Format:  Digital  files  on 

http://www.daikineurope.com/support-

and-manuals/product-information/

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

The original documentation is written in English. All other languages
are translations.

Technical engineering 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).

2

Specific installer safety
instructions

Always observe the following safety instructions and regulations.

Unit installation (see 

"4 Unit installation"

 [

4

 6])

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.