20
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Configuration
Installer and user reference guide
126
RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543427-1A – 2020.10
[2‑83]
Master user interface allocation in case VRV DX indoor units and RA DX indoor
units are used at the same time.
By changing setting [2‑83], you can allow the VRV DX indoor unit to be the
operation mode selector (system power OFF/ON is required after applying this
setting).
[2‑83]
Description
0
VRV DX indoor unit has mode selection right.
1 (default)
RA DX indoor unit has mode selection right setting.
20.2.9 To connect the PC configurator to the outdoor unit
X27A
a
b
c
2
3
4
5
H J
ST
X27A
A1P
a
PC
b
Cable (EKPCCAB*)
c
Outdoor unit main PCB
20.3 Energy saving and optimum operation
This heat pump system is equipped with advanced energy saving functionality.
Depending on the priority, emphasises can be put on energy saving or comfort
level. Several parameters can be selected, resulting in the optimal balance
between energy consumption and comfort for the particular application.
Several patterns are available and explained below. Modify the parameters to the
needs of your building and to realize the best balance between energy
consumption and comfort.
No matter which control is selected, variations on the behaviour of the system are
still possible due to protection controls to keep the unit operating under reliable
conditions. The intentional target, however, is fixed and will be used to obtain the
best balance between energy consumption and comfort, depending on the
application type.
Care should be taken about selection procedures and system setups, especially
when using Hydrobox units. The requested leaving water temperature from the
Hydrobox has priority over this energy saving control, as it is related to the
required water temperature.
