Daikin VRV IV RKXYQ5T8Y1B Series, Installer And User Reference Manual

Page: 26 / 156

8 | Operation
Installer and user reference guide
26
R R8T7V1B
VRV IV heat pump for indoor installation
4P499898-1A – 2020.10
8 Operation
In this chapter
8.1 Operation range...................................................................................................................................................................... 26
8.2 Operating the system ............................................................................................................................................................. 26
8.2.1 About operating the system .................................................................................................................................. 26
8.2.2 About cooling, heating, fan only, and automatic operation ................................................................................. 27
8.2.3 About the heating operation ................................................................................................................................. 27
8.2.4 To operate the system (WITHOUT cool/heat changeover remote control switch) ............................................. 28
8.2.5 To operate the system (WITH cool/heat changeover remote control switch)..................................................... 28
8.3 Using the dry program............................................................................................................................................................ 29
8.3.1 About the dry program .......................................................................................................................................... 29
8.3.2 To use the dry program (WITHOUT cool/heat changeover remote control switch)............................................ 29
8.3.3 To use the dry program (WITH cool/heat changeover remote control switch) ................................................... 30
8.4 Adjusting the air flow direction.............................................................................................................................................. 30
8.4.1 About the air flow flap ........................................................................................................................................... 30
8.5 Setting the master user interface .......................................................................................................................................... 31
8.5.1 About setting the master user interface ............................................................................................................... 31
8.5.2 To designate the master user interface (VRV DX) ................................................................................................. 32
8.5.3 About control systems ........................................................................................................................................... 32
8.1 Operation range
Use the system in the following temperature and humidity ranges for safe and
effective operation.
Specification 5 HP 8 HP
Maximum capacity Heating 16.0 kW 25.0 kW
Cooling 14.0 kW 22.4 kW
Outside ambient design
temperature Heating –20~15.5°C WB
Cooling –5~46°C DB
Ambient design temperature of compressor unit
and heat exchanger unit 5~35°C DB
Maximum relative
humidity around the
compressor unit and heat
exchanger unit Heating 50%
(a)
Cooling 80%
(a)
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 compressor unit,
heat exchanger 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.