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Configuration
Installer and user reference guide
142
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07
For more information and advice about the impact of these settings, see
"21.2 Energy saving and optimum operation"
[2‑88]
Automatic leak detection activation.
When you want to use the automatic leak detection function you have to activate
this setting. By activating setting [2‑88], the automatic leak detection will be
executed depending on the defined value setting. The timing for the next
automatic refrigerant leak detection is subject to setting [2‑65]. The automatic leak
detection will be executed in [2‑65] days.
Each time when the automatic leak detection function was executed the system
will stay idle until it is restarted by manual thermo ON request or by next
scheduled action.
[2‑88]
Description
0 (default)
No leak detection planned.
1
Leak detection planned once in [2‑65] days.
2
Leak detection planned every [2‑65] days.
21.2 Energy saving and optimum operation
This VRV 5 heat recovery 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.
21.2.1 Available main operation methods
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…
Change…
Cooling operation
[2‑8]=2
Heating operation
[2‑9]=6
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).
