Daikin RXYTQ10U7YF [25/152] About operating the system

Daikin RXYTQ10U7YF [25/152] About operating the system
8 | Operation
Installer and user reference guide
25
RXYTQ8~16U7YF
VRV IV+ heat pump for high ambient temperatures
4P561157-1A – 2020.10
8 Operation
In this chapter
8.1 Operation range...................................................................................................................................................................... 25
8.2 Operating the system ............................................................................................................................................................. 25
8.2.1 About operating the system .................................................................................................................................. 25
8.2.2 About cooling, heating, fan only, and automatic operation ................................................................................. 26
8.2.3 About the heating operation ................................................................................................................................. 26
8.2.4 To operate the system (WITHOUT cool/heat changeover remote control switch) ............................................. 26
8.2.5 To operate the system (WITH cool/heat changeover remote control switch)..................................................... 27
8.3 Using the dry program............................................................................................................................................................ 28
8.3.1 About the dry program .......................................................................................................................................... 28
8.3.2 To use the dry program (WITHOUT cool/heat changeover remote control switch)............................................ 28
8.3.3 To use the dry program (WITH cool/heat changeover remote control switch) ................................................... 28
8.4 Adjusting the air flow direction.............................................................................................................................................. 29
8.4.1 About the air flow flap ........................................................................................................................................... 29
8.5 Setting the master user interface .......................................................................................................................................... 30
8.5.1 About setting the master user interface ............................................................................................................... 30
8.5.2 To designate the master user interface (VRV DX and Hydrobox) ......................................................................... 30
8.6 About control systems............................................................................................................................................................ 30
8.1 Operation range
Use the system in the following temperature and humidity ranges for safe and
effective operation.
Cooling Heating
Outdoor temperature –5~52°CDB –20~21°CDB
–20~15.5°C WB
Indoor temperature 21~32°CDB
14~25°C WB
15~27°CDB
Indoor humidity ≤80%
(a)
(a)
To avoid condensation and water dripping out of the unit. If the temperature or the
humidity is beyond these conditions, safety devices may be put in action and the air
conditioner may not operate.
Above operation range is only valid in case direct expansion indoor units are
connected to the VRV IV system.
Special operation ranges are valid in case of using AHU. They can be found in the
installation/operation manual of the dedicated unit. Latest information can be
found in the technical engineering data.
8.2 Operating the system
8.2.1 About operating the system
Operation procedure varies according to the combination of outdoor unit and
user interface.
To protect the unit, turn on the main power switch 6 hours before operation.
If the main power supply is turned off during operation, operation will restart
automatically after the power turns back on again.

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