Table of contents
Installation and operation manual
4
RWEYQ8~RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452190-1A – 2017.04
Table of contents
1 About the documentation
5
1.1
About this document..................................................................
5
For the installer
5
2 About the box
5
2.1
To remove the accessories from the outdoor unit .....................
5
2.2
Accessory pipes: Diameters ......................................................
5
2.3
To remove the transportation stay.............................................
6
3 About the units and options
6
3.1
About the outdoor unit ...............................................................
6
3.2
System layout ............................................................................
7
4 Preparation
7
4.1
Preparing installation site ..........................................................
7
4.1.1
Installation site requirements of the outdoor unit ........
7
4.2
Preparing refrigerant piping .......................................................
7
4.2.1
Refrigerant piping requirements..................................
7
4.2.2
To select the piping size .............................................
8
4.2.3
To select refrigerant branch kits..................................
9
4.2.4
Multiple outdoor units: Possible layouts...................... 10
4.3
Preparing water piping ..............................................................
10
4.3.1
Water circuit requirements .......................................... 10
4.3.2
Handling the brazed plate heat exchanger ................. 11
4.3.3
About the water flow rate ............................................ 11
4.4
Preparing electrical wiring .........................................................
12
4.4.1
Safety device requirements ........................................ 12
5 Installation
13
5.1
Opening the units ......................................................................
13
5.1.1
To open the outdoor unit............................................. 13
5.1.2
To open the electrical component box of the outdoor
unit .............................................................................. 13
5.2
Mounting the outdoor unit..........................................................
13
5.2.1
To provide the installation structure ............................ 13
5.3
Connecting the refrigerant piping ..............................................
13
5.3.1
To route the refrigerant piping..................................... 13
5.3.2
To connect the refrigerant piping to the outdoor unit .. 14
5.3.3
To connect the multi connection piping kit .................. 14
5.3.4
To connect the refrigerant branching kit ..................... 14
5.3.5
To protect against contamination................................ 14
5.3.6
Using the stop valve and service port ......................... 14
5.3.7
To remove the pinched pipes...................................... 15
5.4
Checking the refrigerant piping .................................................
16
5.4.1
About checking the refrigerant piping ......................... 16
5.4.2
Checking refrigerant piping: General guidelines ......... 16
5.4.3
Checking refrigerant piping: Setup.............................. 16
5.4.4
To perform a leak test ................................................. 17
5.4.5
To perform vacuum drying .......................................... 17
5.5
To insulate the refrigerant piping...............................................
17
5.6
Charging refrigerant ..................................................................
17
5.6.1
Precautions when charging refrigerant ....................... 17
5.6.2
About charging refrigerant .......................................... 18
5.6.3
To determine the additional refrigerant amount .......... 18
5.6.4
To charge refrigerant .................................................. 18
5.6.5
Checks after charging refrigerant................................ 19
5.6.6
To fix the fluorinated greenhouse gases label ............ 19
5.7
Connecting the water piping......................................................
20
5.7.1
About connecting the water piping.............................. 20
5.7.2
To connect the water piping........................................ 20
5.7.3
To fill the water circuit ................................................. 20
5.7.4
To insulate the water piping ........................................ 20
5.8
Connecting the electrical wiring.................................................
20
5.8.1
Field wiring: Overview................................................. 20
5.8.2
To route and fix the transmission wiring ...................... 20
5.8.3
To connect the transmission wiring.............................. 21
5.8.4
To finish the transmission wiring.................................. 21
5.8.5
To route and fix the power supply................................ 21
5.8.6
To connect the power supply ....................................... 22
5.8.7
To connect the optional wiring ..................................... 22
6 Configuration
23
6.1
Making field settings ................................................................... 23
6.1.1
About making field settings .......................................... 23
6.1.2
Field setting components ............................................. 23
6.1.3
To access the field setting components....................... 24
6.1.4
To access mode 1 or 2 ................................................ 24
6.1.5
To use mode 1 ............................................................. 24
6.1.6
To use mode 2 ............................................................. 24
6.1.7
Mode 1: Monitoring settings......................................... 25
6.1.8
Mode 2: Field settings.................................................. 25
6.1.9
To connect the PC configurator to the outdoor unit ..... 26
7 Commissioning
26
7.1
Precautions when commissioning .............................................. 26
7.2
Checklist before commissioning ................................................. 26
7.3
About test run ............................................................................. 27
7.4
To perform a test run .................................................................. 27
7.5
Correcting after abnormal completion of the test run ................. 28
8 Troubleshooting
28
8.1
Solving problems based on error codes ..................................... 28
9 Technical data
28
9.1
Service space: Outdoor unit ....................................................... 28
9.2
Piping diagram: Outdoor unit...................................................... 29
For the user
30
10 About the system
30
10.1
System layout ............................................................................. 30
11 User interface
30
12 Operation
31
12.1
Operation range ......................................................................... 31
12.2
Operating the system ................................................................. 31
12.2.1
About operating the system ......................................... 31
12.2.2
About cooling, heating, fan only, and automatic
operation ...................................................................... 31
12.2.3
About the heating operation......................................... 31
12.2.4
To operate the system (WITHOUT cool/heat
changeover remote control switch) .............................. 31
12.2.5
To operate the system (WITH cool/heat changeover
remote control switch).................................................. 31
12.3
Using the dry program ................................................................ 32
12.3.1
About the dry program ................................................. 32
12.3.2
To use the dry program (WITHOUT cool/heat
changeover remote control switch) .............................. 32
12.3.3
To use the dry program (WITH cool/heat changeover
remote control switch).................................................. 32
12.4
Adjusting the air flow direction.................................................... 32
12.4.1
About the air flow flap .................................................. 32
12.5
Setting the master user interface ............................................... 32
12.5.1
About setting the master user interface ....................... 32
13 Maintenance and service
32
13.1
About the refrigerant................................................................... 33
13.2
After-sales service and warranty ................................................ 33
13.2.1
Warranty period ........................................................... 33
13.2.2
Recommended maintenance and inspection............... 33
14 Troubleshooting
33
14.1
Error codes: Overview ................................................................ 34
14.2
Symptoms that are NOT system malfunctions ........................... 34
