Daikin LRLEQ4BY1 [2/44] Maintenance and service 33
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Daikin LRLEQ4BY1 [2/44] Maintenance and service 33

Daikin LRLEQ3BY1 [2/44] Maintenance and service 33
Table of contents
Installer and user reference guide
2
LRMEQ+LRLEQ3+4BY1
Air-cooled refrigeration condensing unit
4P500362-1A – 2018.09
Table of contents
1 General safety precautions 3
1.1 About the documentation .......................................................... 3
1.1.1 Meaning of warnings and symbols.............................. 3
1.2 For the user ............................................................................... 3
1.3 For the installer.......................................................................... 4
1.3.1 General ....................................................................... 4
1.3.2 Installation site ............................................................ 4
1.3.3 Refrigerant .................................................................. 4
1.3.4 Brine............................................................................ 5
1.3.5 Water .......................................................................... 5
1.3.6 Electrical ..................................................................... 5
2 About the documentation 6
2.1 About this document.................................................................. 6
For the installer 7
3 About the box 7
3.1 Overview: About the box ........................................................... 7
3.2 Outdoor unit............................................................................... 7
3.2.1 To unpack the outdoor unit ......................................... 7
3.2.2 To handle the outdoor unit.......................................... 7
3.2.3 To remove the accessories from the outdoor unit....... 7
3.2.4 To remove the transportation stay .............................. 7
4 About the units 8
4.1 Overview: About the units ......................................................... 8
4.2 Identification .............................................................................. 8
4.2.1 Identification label: Outdoor unit ................................. 8
4.3 About the outdoor unit ............................................................... 8
4.4 System layout............................................................................ 8
4.5 Combining units and options ..................................................... 8
4.5.1 Possible options for the outdoor unit........................... 8
4.5.2 About the indoor units................................................. 8
5 Preparation 9
5.1 Overview: Preparation............................................................... 9
5.2 Preparing the installation site .................................................... 9
5.2.1 Installation site requirements of the outdoor unit ........ 9
5.2.2 Additional installation site requirements of the
outdoor unit in cold climates ....................................... 10
5.2.3 Securing safety against refrigerant leaks.................... 11
5.3 Preparing refrigerant piping....................................................... 11
5.3.1 About reusing existing piping...................................... 11
5.3.2 Refrigerant piping requirements.................................. 12
5.3.3 Refrigerant piping material.......................................... 12
5.3.4 To select the piping size ............................................. 12
5.3.5 To select refrigerant branch kits.................................. 13
5.3.6 Refrigerant piping length and height difference .......... 13
5.3.7 To select the expansion valve..................................... 13
5.4 Preparing electrical wiring ......................................................... 13
5.4.1 Safety device requirements ........................................ 13
6 Installation 14
6.1 Overview: Installation ................................................................ 14
6.2 Opening the units ...................................................................... 14
6.2.1 About opening the units .............................................. 14
6.2.2 To open the outdoor unit............................................. 14
6.3 Mounting the outdoor unit.......................................................... 14
6.3.1 About mounting the outdoor unit................................. 14
6.3.2 Precautions when mounting the outdoor unit.............. 14
6.3.3 To provide the installation structure............................ 15
6.3.4 To install the outdoor unit............................................ 15
6.3.5 To prevent the outdoor unit from falling over .............. 15
6.4 Connecting the refrigerant piping .............................................. 15
6.4.1 About connecting the refrigerant piping ....................... 15
6.4.2 Precautions when connecting the refrigerant piping.... 15
6.4.3 Pipe bending guidelines............................................... 16
6.4.4 To braze the pipe end .................................................. 16
6.4.5 Using the stop valve and service port .......................... 16
6.4.6 To remove the pinched pipes....................................... 17
6.4.7 Guidelines when installing a sight glass ...................... 18
6.4.8 Guidelines when installing a dryer ............................... 18
6.4.9 To connect the refrigerant piping to the outdoor unit ... 18
6.4.10 Guidelines when connecting piping branching............. 19
6.5 Checking the refrigerant piping .................................................. 20
6.5.1 About checking the refrigerant piping .......................... 20
6.5.2 Checking refrigerant piping: General guidelines.......... 20
6.5.3 Checking refrigerant piping: Setup............................... 20
6.5.4 To perform a leak test .................................................. 20
6.5.5 To perform vacuum drying ........................................... 21
6.6 To insulate the refrigerant piping................................................ 21
6.7 Charging refrigerant ................................................................... 21
6.7.1 About charging refrigerant ........................................... 21
6.7.2 Precautions when charging refrigerant ........................ 21
6.7.3 To determine the additional refrigerant amount........... 22
6.7.4 To charge refrigerant ................................................... 22
6.7.5 Error codes when charging refrigerant......................... 24
6.7.6 To fix the fluorinated greenhouse gases label ............. 24
6.8 Connecting the electrical wiring.................................................. 24
6.8.1 About connecting the electrical wiring.......................... 24
6.8.2 Field wiring: Overview.................................................. 24
6.8.3 Precautions when connecting the electrical wiring ...... 25
6.8.4 Guidelines when knocking out knockout holes ............ 26
6.8.5 Guidelines when connecting the electrical wiring ........ 26
6.8.6 To connect the electrical wiring on the outdoor unit..... 26
6.9 Finishing the outdoor unit installation ......................................... 28
6.9.1 To close the outdoor unit ............................................. 28
7 Configuration 28
7.1 Overview: Configuration ............................................................. 28
7.2 Making field settings................................................................... 28
7.2.1 About making field settings .......................................... 28
7.2.2 To access the field setting components....................... 28
7.2.3 Field setting components ............................................. 28
7.2.4 To access mode 1 or 2 ................................................ 29
7.2.5 To use mode 1 ............................................................. 29
7.2.6 To use mode 2 ............................................................. 29
7.2.7 Mode 1 (and default situation): Monitoring settings ..... 30
7.2.8 Mode 2: Field settings.................................................. 30
7.2.9 To connect the PC configurator to the outdoor unit ..... 31
8 Commissioning 31
8.1 Overview: Commissioning.......................................................... 31
8.2 Precautions when commissioning .............................................. 31
8.3 Checklist before commissioning................................................. 31
8.4 Checklist during commissioning ................................................. 32
8.4.1 About the test run......................................................... 32
8.4.2 To perform a test run (7-LEDs display)........................ 32
8.4.3 Correcting after abnormal completion of the test run... 32
8.4.4 Operating the unit ........................................................ 32
9 Hand-over to the user 32
10 Maintenance and service 33
10.1 Overview: Maintenance and service .......................................... 33
10.2 Maintenance safety precautions................................................. 33
10.2.1 To prevent electrical hazards....................................... 33
10.3 Checklist for yearly maintenance of the outdoor unit ................. 33
11 Troubleshooting 33
11.1 Overview: Troubleshooting......................................................... 33
11.2 Precautions when troubleshooting ............................................. 33
11.3 Solving problems based on error codes ..................................... 34
11.3.1 To display the error codes of the latest malfunctions... 34
11.3.2 Error codes: Overview ................................................. 34

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