Daikin VRV 5 RXYA8A7Y1B, Installer And User Manual

Page: 36 / 200

7 | Operation
Installer and user reference guide
36
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
7.6 Setting the master user interface
7.6.1 About setting the master user interface
a
b
c c c c c
d d d d
b e
d
a Outdoor unit
b SV unit
c VRV DX indoor unit
d User interface
e Direct connection to VRV DX indoor unit
When the system is installed as shown in the figure above, it is necessary to – for
each subsystem – designate one of the user interfaces as the master user
interface.
The displays of slave user interfaces show (changeover under centralised
control) and slave user interfaces automatically follow the operation mode
directed by the master user interface.
Only the master user interface can select heating or cooling mode (cooling/heating
masterhood).
7.6.2 To designate the master user interface
1 Press the operation mode selector button of the current master user interface
for 4 seconds. In case this procedure was not yet performed, the procedure
can be executed on the first user interface operated.
Result: The display showing (changeover under centralised control) of all
slave user interfaces connected to the same outdoor unit flashes.
2 Press the operation mode selector button of the controller that you wish to
designate as the master user interface.
Result: Designation is completed. This user interface is designated as the
master user interface and the display showing (changeover under
centralised control) vanishes. The displays of other user interfaces show
(changeover under centralised control).
Refer to the operation manual of the user interface.
7.7 About control systems
This system provides two other control systems beside individual control system
(one user interface controls one indoor unit). Confirm the following if your unit is
of the following control system type:
Type Description
Group control system One user interface controls up to 10 indoor
units. All indoor units are equally set.