Electrical Wiring; System Composition; Access To Internal Components - Hitachi PC-ARF Technical Catalogue

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8 Control support devices

8.2.3 Electrical wiring

C A U T I O N

Turn OFF the power supply of the room air-conditioner or the central control device when performing the wiring work.- DO NOT run all

the H-LINK cable or power supply cable along the other signal cable, or malfunction may occur due to the noise, etc. If it is required to

run along the other transmission cable, separate the cable more than 30cm, or run the cable through the metal tube and earth the tube.

Follow local codes and regulations when performing electrical wiring and earth wiring.

Transmission cable used in H-LINK shall be 2 cores cable (0.75mm² to 1.25mm²) (Model: VCTF, VCT, CVV, MVVS, CVVS, VVR, VVF)

or 2 cores twist pair cable (Model: KPEV, KPEV-Spec). Total length of cable shall be below 1000m.

Do not use wire with more than 3 cores

Open the cover by removing the

TCGB0106 rev.0 - 12/2014

Outdoor unit

Up to 128 units can be connected in case

that H-LINK is made up only by RAC adapter.

In case of combination use with H-LINK de-

vices like package air-conditioner, 16 refrig-

erant systems and up to 128 indoor units can

RAC adapter and room air-conditioner shall

be connected one by one. Only one RAC

adapter cannot control various room air-con-