Table of Contents
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Table of Contents
Table of Contents
1.1
About the documentation ..........................................................
1.1.1
Meaning of warnings and symbols..............................
1.2
For the user ...............................................................................
1.3
For the installer..........................................................................
1.3.1
General .......................................................................
1.3.2
Installation site ............................................................
1.3.3
Refrigerant ..................................................................
1.3.4
Brine............................................................................
1.3.5
Water ..........................................................................
1.3.6
Electrical .....................................................................
2.1
About this document..................................................................
3.1
Overview: About the box ...........................................................
3.2
Outdoor unit...............................................................................
3.2.1
To unpack the outdoor unit .........................................
3.2.2
To handle the outdoor unit ..........................................
3.2.3
4.1
Overview: About the units .........................................................
4.2
Identification ..............................................................................
4.2.1
Identification label: Outdoor unit .................................
4.3
About the outdoor unit ...............................................................
4.4
System layout............................................................................
4.5
About the indoor units ...............................................................
4.5.1
5.1
Overview: Preparation...............................................................
5.2
Preparing installation site ..........................................................
5.2.1
5.2.2
outdoor unit in cold climates ....................................... 10
5.2.3
Securing safety against refrigerant leaks.................... 10
5.3
Preparing refrigerant piping....................................................... 11
5.3.1
About reusing existing piping ...................................... 11
5.3.2
Refrigerant piping requirements.................................. 11
5.3.3
Refrigerant piping material.......................................... 11
5.3.4
To select the piping size ............................................. 11
5.3.5
Refrigerant piping length and height difference .......... 12
5.4
Preparing electrical wiring ......................................................... 12
5.4.1
Safety device requirements ........................................ 12
6.1
Overview: Installation ................................................................ 13
6.2
Opening the units ...................................................................... 13
6.2.1
About opening the units .............................................. 13
6.2.2
To open the outdoor unit............................................. 13
6.3
Mounting the outdoor unit.......................................................... 13
6.3.1
About mounting the outdoor unit................................. 13
6.3.2
Precautions when mounting the outdoor unit.............. 13
6.3.3
To provide the installation structure ............................ 13
6.3.4
To install the outdoor unit............................................ 14
6.3.5
To prevent the outdoor unit from falling over .............. 14
6.4
Connecting the refrigerant piping .............................................. 14
6.4.1
About connecting the refrigerant piping ...................... 14
6.4.2
6.4.3
6.4.4
Pipe bending guidelines.............................................. 15
Installer and user reference guide
2
6.4.5
To flare the pipe end .................................................... 15
6.4.6
To braze the pipe end .................................................. 15
6.4.7
Using the stop valve and service port .......................... 15
6.4.8
Guidelines when installing a sight glass ...................... 16
6.4.9
Guidelines when installing a dryer ............................... 17
3
6.4.10
3
6.4.11
Guidelines when connecting piping branching............. 17
3
6.5
Checking the refrigerant piping .................................................. 18
3
6.5.1
About checking the refrigerant piping .......................... 18
4
6.5.2
Checking refrigerant piping: General guidelines .......... 18
4
6.5.3
Checking refrigerant piping: Setup............................... 18
4
6.5.4
To perform a leak test .................................................. 18
4
6.5.5
To perform vacuum drying ........................................... 19
5
6.6
To insulate the refrigerant piping................................................ 19
5
6.7
Charging refrigerant ................................................................... 19
5
6.7.1
About charging refrigerant ........................................... 19
6
6.7.2
Precautions when charging refrigerant ........................ 19
6.7.3
To determine the additional refrigerant amount ........... 20
6
6.7.4
To charge refrigerant ................................................... 20
6.7.5
Error codes when charging refrigerant......................... 21
6.7.6
To fix the fluorinated greenhouse gases label ............. 21
6
6.8
Connecting the electrical wiring.................................................. 22
6.8.1
About connecting the electrical wiring.......................... 22
6
6.8.2
Precautions when connecting electrical wiring ............ 22
6
6.8.3
Guidelines when knocking out knockout holes ............ 23
7
6.8.4
Guidelines when connecting the electrical wiring ........ 23
7
6.8.5
7
6.9
Finishing the outdoor unit installation ......................................... 24
7
6.9.1
To close the outdoor unit ............................................. 24
7
7
7.1
Overview: Configuration ............................................................. 25
7
7.2
Making field settings................................................................... 25
8
7.2.1
About making field settings .......................................... 25
8
7.2.2
To access the field setting components....................... 25
8
7.2.3
Field setting components ............................................. 25
8
7.2.4
To access mode 1 or 2 ................................................ 25
8
7.2.5
To use mode 1 ............................................................. 26
8
7.2.6
To use mode 2 ............................................................. 26
8
7.2.7
8
7.2.8
Mode 2: Field settings.................................................. 27
9
8.1
Overview: Commissioning.......................................................... 27
8.2
Precautions when commissioning .............................................. 27
8.3
Checklist before commissioning................................................. 28
8.4
Checklist during commissioning ................................................. 28
8.4.1
About test run............................................................... 28
8.4.2
To perform a test run (7-LEDs display)........................ 28
8.4.3
8.4.4
Operating the unit ........................................................ 29
13
10.1
Overview: Maintenance and service .......................................... 29
10.2
Maintenance safety precautions................................................. 29
10.2.1
To prevent electrical hazards....................................... 29
10.3
Checklist for yearly maintenance of the outdoor unit ................. 30
10.4
About service mode operation.................................................... 30
10.4.1
To use vacuum mode .................................................. 30
10.4.2
To recover refrigerant .................................................. 30
11.1
Overview: Troubleshooting......................................................... 30
11.2
Precautions when troubleshooting ............................................. 30
11.3
Solving problems based on error codes..................................... 30
11.3.1
11.3.2
Error codes: Overview ................................................. 31
25
27
29
29
30
32
LRMEQ3+4AY1
Air-cooled refrigeration condensing unit
4P442131-1 - 2016.03
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Troubleshooting
