Mutiple Dx-Interface Series 2 Installation - Hitachi EXV-2.0E2 Manuel D'installation Et De Fonctionnement

MUTIPLE DX-INTERFACE SERIES 2 INSTALLATION

9 MUTIPLE DX-INTERFACE SERIES 2 INSTALLATION
Up to 5 DX-Interface series 2 working with the same indoor unit or device with heat exchanger (HEX) can be installed. Such
installation setting is restricted to certain applications, and by the installation of the dedicated IVX Premium
RAS-XH(V)NP(1)E. This configuration is not allowed for other outdoor units.
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Installation considerations
• One unit of DX-Interface series 2 is to be set as a group controller, while all the other group members are slave (PCB2, DSW1,
pin 7).
• Air thermistors (THM1 and THM2) are only connected to the DX-Interface series 2 set as group controller. However, every DX-
Inteface needs to be connected to its own own pipe thermistors (THM3 and THM5).
• One remote controller PC-ARFPE has to be installed in the DX-Interface series 2 set as group controller and all DX-Interfaces
series 2 must be linked through the remote control transmission wiring.
• Outdoor units must be of the same capacity. It is recommended to split the heat exchanger in as many parts as DX-Interface s
series 2 are used in the air stream direction, ensuring that all the HEX sections have equivalent inlet air flow and temperature
conditions.
RC
Transmission
wiring
19 PMML0293A rev.2 - 08/2016
PC-ARFPE
THM3
THM5
THM1 THM1
THM2 THM2
THM3
THM5
THM3
THM5