Energy Saving And Optimum Operation; Available Main Operation Methods - Daikin VRV 5 RXYA8A7Y1B Installer And User Manual

21 | Configuration

21.2 Energy saving and optimum operation

21.2.1 Available main operation methods

Installer and user reference guide
156
This VRV 5 heat pump system is equipped with advanced energy saving
functionality. Depending on the priority, emphasis 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.
Basic
The refrigerant temperature is fixed independent from the situation. It
corresponds to the standard operation which is known and can be expected from/
under previous VRV systems.
To activate this in...
Cooling operation
Heating operation
Automatic
The refrigerant temperature is set depending on the outdoor ambient conditions.
As such adjusting the refrigerant temperature to match the required load (which is
also related to the outdoor ambient conditions).
E.g., when your system is operating in cooling, you do not need as much cooling
under low outdoor ambient temperatures (e.g., 25°C) as under high outdoor
ambient temperatures (e.g., 35°C). Using this idea, the system automatically starts
increasing its refrigerant temperature, automatically reducing the delivered
capacity and increasing the system's efficiency.
E.g., when your system is operating in heating, you do not need as much heating
under high outdoor ambient temperatures (e.g., 15°C) as under low outdoor
ambient temperatures (e.g., –5°C). Using this idea, the system automatically starts
decreasing its refrigerant temperature, automatically reducing the delivered
capacity and increasing the system's efficiency.
To activate this in...
Cooling operation
Heating operation
Hi-sensible/economic (cooling/heating)
The refrigerant temperature is set higher/lower (cooling/heating) compared to
basic operation. The focus under high sensible mode is comfort feeling for the
customer.
The selection method of indoor units is important and has to be considered as the
available capacity is not the same as under basic operation.
Change...
[2‑8]=2
[2‑9]=6
Change...
[2‑8]=0 (default)
[2‑9]=0 (default)
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12