14
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About the units and options
Installer and user reference guide
48
LRYELRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
14.4.2 Possible options for the outdoor unit
INFORMATION
Refer to the technical engineering data for the latest option names.
Refrigerant T-joints
Allowed
Not allowed
Refrigerant unit
T-joints
(a)
Refnet joints and headers
(branch kits)
Air conditioning unit
T-joints
(a)
Refnet joints and headers
(branch kits)
(a)
Field supply
Communication box (BRR9B1V1)
Install the modbus communication box to fully integrate your CO
2
Conveni-Pack
system with building control automation networks and other monitoring systems.
Pressure reduction kit (EKPRV1)
Install the pressure reduction kit when the design pressure of the installed
refrigerant cabinets is lower than 90 bar.
For more information, see the installation manual of the pressure reduction kit.
14.5 Indoor unit constraints
NOTICE
The design pressure of high pressure side of the connected refrigeration parts MUST
be 9 MPa (90 bar).
NOTICE
If the design pressure of the lower pressure side of refrigeration parts is different
from 90 bar (for example: 60 bar), a safety valve MUST be installed on the field
piping according to this design pressure. It is NOT possible to connect refrigeration
parts with design pressure below 60 bar.
NOTICE
The design pressure of the connected air conditioning parts MUST be 12 MPa
(120 bar). If this is not the case, please contact your dealer for assistance.
WARNING
Only the refrigeration parts that are also designed to work with CO
2
shall be
connected to the system.
14.5.1 Constraints for air conditioning
Individual control with a remote controller
In case of a system with several air conditioners that are controlled with the same
remote controller in the same space:
