Operation; Operation Range; Operating The System; About Operating The System - Daikin VRV IV+ Installer And User Reference Manual

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Operation

8 Operation
In this chapter

8.1 Operation range

8.2 Operating the system

8.2.1 About operating the system

Installer and user reference guide
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8.1 Operation range......................................................................................................................................................................
8.2 Operating the system .............................................................................................................................................................
8.2.1 About operating the system ..................................................................................................................................
8.2.2 About cooling, heating, fan only, and automatic operation .................................................................................
8.2.3 About the heating operation .................................................................................................................................
8.2.4 To operate the system (WITHOUT cool/heat changeover remote control switch) .............................................
8.2.5 To operate the system (WITH cool/heat changeover remote control switch).....................................................
8.3 Using the dry program............................................................................................................................................................
8.3.1 About the dry program ..........................................................................................................................................
8.3.2 To use the dry program (WITHOUT cool/heat changeover remote control switch)............................................
8.3.3 To use the dry program (WITH cool/heat changeover remote control switch) ...................................................
8.4 Adjusting the air flow direction..............................................................................................................................................
8.4.1 About the air flow flap ...........................................................................................................................................
8.5 Setting the master user interface ..........................................................................................................................................
8.5.1 About setting the master user interface ...............................................................................................................
8.5.2 To designate the master user interface (VRV DX and Hydrobox) .........................................................................
8.6 About control systems............................................................................................................................................................
Use the system in the following temperature and humidity ranges for safe and
effective operation.
Outdoor temperature
Indoor temperature
Indoor humidity
(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.
▪ 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.
Cooling
-5~43°C DB
21~32°C DB
14~25°C WB
(a)
≤80%
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Heating
-20~20°C DB
-20~15.5°C WB
15~27°C DB
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A - 2020.10