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Table of contents
Installer and user reference guide
2
Table of contents
1.1
About this document ......................................................................................................................................................
1.2
Meaning of warnings and symbols.................................................................................................................................
2.1
For the installer ...............................................................................................................................................................
2.1.1
General ...........................................................................................................................................................
2.1.2
Installation site ...............................................................................................................................................
2.1.3
Refrigerant - in case of R410A or R32..........................................................................................................
2.1.4
Electrical ......................................................................................................................................................... 11
4.1
General............................................................................................................................................................................ 18
4.2
Instructions for safe operation ....................................................................................................................................... 19
5.1
System layout.................................................................................................................................................................. 22
7.1
Before operation............................................................................................................................................................. 24
7.2
Operation range.............................................................................................................................................................. 25
7.3
Operating the system ..................................................................................................................................................... 25
7.3.1
About operating the system........................................................................................................................... 25
7.3.2
About cooling, heating, fan only, and automatic operation ......................................................................... 25
7.3.3
About the heating operation.......................................................................................................................... 26
7.3.4
To operate the system (WITHOUT cool/heat changeover remote control switch)...................................... 26
7.3.5
To operate the system (WITH cool/heat changeover remote control switch)............................................. 27
7.4
Using the dry program.................................................................................................................................................... 27
7.4.1
About the dry program................................................................................................................................... 27
7.4.2
To use the dry program (WITHOUT cool/heat changeover remote control switch) .................................... 28
7.4.3
To use the dry program (WITH cool/heat changeover remote control switch) ........................................... 28
7.5
Adjusting the air flow direction ...................................................................................................................................... 29
7.5.1
About the air flow flap.................................................................................................................................... 29
7.6
Setting the master user interface................................................................................................................................... 30
7.6.1
About setting the master user interface........................................................................................................ 30
7.6.2
To designate the master user interface (VRV DX and Hydrobox) ................................................................. 30
7.7
About control systems .................................................................................................................................................... 30
8.1
Available main operation methods ................................................................................................................................ 31
8.2
Available comfort settings .............................................................................................................................................. 32
9.1
Maintenance after a long stop period............................................................................................................................ 33
9.2
Maintenance before a long stop period......................................................................................................................... 34
9.3
About the refrigerant...................................................................................................................................................... 34
9.4
After-sales service and warranty .................................................................................................................................... 34
9.4.1
Warranty period ............................................................................................................................................. 34
9.4.2
Recommended maintenance and inspection ................................................................................................ 35
9.4.3
Recommended maintenance and inspection cycles ..................................................................................... 35
9.4.4
Shortened maintenance and replacement cycles ......................................................................................... 36
10.1
Error codes: Overview .................................................................................................................................................... 38
10.2
Symptoms that are NOT system malfunctions............................................................................................................... 41
10.2.1
Symptom: The system does not operate....................................................................................................... 41
10.2.2
Symptom: Cool/Heat cannot be changed over ............................................................................................. 41
10.2.3
Symptom: Fan operation is possible, but cooling and heating do not work ................................................ 41
10.2.4
Symptom: The fan speed does not correspond to the setting...................................................................... 41
10.2.5
Symptom: The fan direction does not correspond to the setting................................................................. 41
VRV IV+ heat pump for high ambient temperatures
4P561157-1B - 2021.11
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RXYTQ
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