Table of Contents
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Table of contents
1 About this document
2 Specific installer safety instructions
2.1
Instructions for equipment using R32 refrigerant ......................
3.1
General......................................................................................
3.2
Instructions for safe operation ...................................................
4.1
System layout............................................................................ 10
6.1
Operation range ........................................................................ 11
6.2
Operating the system ................................................................ 11
6.2.1
About operating the system ........................................ 11
6.2.2
operation ..................................................................... 11
6.2.3
About the heating operation........................................ 11
6.2.4
changeover remote control switch) ............................. 12
6.2.5
remote control switch)................................................. 12
6.3
Using the dry program............................................................... 12
6.3.1
About the dry program ................................................ 12
6.3.2
changeover remote control switch) ............................. 12
6.3.3
To use the dry program (WITH cool/heat changeover
remote control switch)................................................. 12
6.4
Adjusting the air flow direction................................................... 13
6.4.1
About the air flow flap ................................................. 13
6.5
Setting the master user interface .............................................. 13
6.5.1
About setting the master user interface ...................... 13
6.5.2
To designate the master user interface ...................... 13
7.1
Precautions for maintenance and service ................................. 14
7.2
About the refrigerant.................................................................. 14
7.3
After-sales service..................................................................... 14
7.3.1
Recommended maintenance and inspection.............. 14
8.1
Error codes: Overview............................................................... 15
8.2
Symptoms that are NOT system malfunctions .......................... 16
8.2.1
Symptom: The system does not operate .................... 16
8.2.2
Symptom: Cool/Heat cannot be changed over ........... 16
8.2.3
Symptom: Fan operation is possible, but cooling and
heating do not work..................................................... 16
8.2.4
Symptom: The fan speed does not correspond to the
setting ......................................................................... 16
8.2.5
Symptom: The fan direction does not correspond to
the setting ................................................................... 16
8.2.6
Symptom: White mist comes out of a unit (Indoor
unit) ............................................................................. 16
8.2.7
Symptom: White mist comes out of a unit (Indoor
unit, outdoor unit) ........................................................ 16
8.2.8
Symptom: The user interface reads "U4" or "U5" and
stops, but then restarts after a few minutes ................ 16
8.2.9
Symptom: Noise of air conditioners (Indoor unit)........ 16
8.2.10
Symptom: Noise of air conditioners (Indoor unit,
outdoor unit)................................................................ 16
8.2.11
8.2.12
Symptom: Dust comes out of the unit ......................... 17
8.2.13
Symptom: The units can give off odours..................... 17
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P739915-1 - 2023.12
8.2.14
Symptom: The outdoor unit fan does not spin ............. 17
8.2.15
8.2.16
not stop after a short heating operation ....................... 17
4
8.2.17
even when the unit has stopped .................................. 17
4
8.2.18
stopped ........................................................................ 17
7
7
7
7
8
10
11.1
To remove the accessories from the outdoor unit ...................... 17
11.2
Accessory pipes: Diameters....................................................... 17
11
11.3
To remove the transportation stay (only for 5~12 HP) ............... 18
11
12.1
About the outdoor unit ................................................................ 18
12.2
System layout............................................................................. 18
13.1
Installation space requirements.................................................. 19
13.2
System layout requirements....................................................... 19
13.3
To determine the required safety measures............................... 21
13.3.1
Overview: flowchart...................................................... 22
13.4
Safety measures ........................................................................ 22
13.4.1
No safety measure....................................................... 22
13.4.2
Alarm............................................................................ 22
13.4.3
Natural ventilation ........................................................ 23
13.4.4
Shut-off valves ............................................................. 24
13.4.5
Overview: flowchart...................................................... 26
13.5
Combinations of safety measures .............................................. 27
14.1
Preparing the installation site ..................................................... 27
14.1.1
Installation site requirements of the outdoor unit ......... 27
14.1.2
outdoor unit in cold climates ........................................ 27
14.2
Opening the unit ......................................................................... 28
14
14.2.1
To open the outdoor unit.............................................. 28
14.2.2
To open the switch box of the outdoor unit .................. 28
14.3
Mounting the outdoor unit........................................................... 28
14.3.1
To provide the installation structure ............................. 28
14.3.2
To install the outdoor unit............................................. 29
14
15.1
Preparing refrigerant piping........................................................ 29
15.1.1
Refrigerant piping requirements................................... 29
15.1.2
Refrigerant piping material........................................... 29
15.1.3
To select the piping size .............................................. 29
15.1.4
To select refrigerant branch kits................................... 30
15.1.5
Installation limitations................................................... 31
15.1.6
Multiple outdoor units: Possible layouts....................... 31
15.2
Connecting the refrigerant piping ............................................... 32
15.2.1
Using the stop valve and service port .......................... 32
15.2.2
To route the refrigerant piping...................................... 32
15.2.3
To protect against contamination................................. 33
15.2.4
To remove the pinched pipes....................................... 33
15.2.5
15.2.6
To connect the multi connection piping kit ................... 33
15.2.7
To connect the refrigerant branching kit ...................... 34
15.3
Checking the refrigerant piping .................................................. 34
15.3.1
About checking the refrigerant piping .......................... 34
15.3.2
Checking refrigerant piping: General guidelines .......... 34
15.3.3
Checking refrigerant piping: Setup............................... 35
15.3.4
To perform a leak test .................................................. 35
15.3.5
To perform vacuum drying ........................................... 35
Table of contents
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Installation and operation manual
3
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Troubleshooting
