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8
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Operation
Installer and user reference guide
25
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
8 Operation
In this chapter
8.1 Operation range
Use the system in the following temperature and humidity ranges for safe and
effective operation.
Cooling
Heating
Indoor temperature
21~32°C DB
14~25°C WB
15~27°C DB
Water temperature
10~45°C
Water temperature – extended range
(in case brine type setting [2-50] is set
for brine)
–10~45°C
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 Hydrobox units or 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.