Hitachi UTOPIA RAS-4 Series - Page 120

10 Electrical wiring
H-LINK II system
TCGB0136 rev.1 - 05/2021
112
2. Using the H-LINK II system for air conditioning systems with a central control device (Either
Centralised remote controls or Building air conditioning control)
• If the central control device is used when carrying out electrical wiring, it can be connected at any point of the H-LINK
II wiring.
A
B
CSNET Manager 2
A: Outdoor units.
B: Indoor units.
• If the central control device is not used when electrical wiring is carried out, you must connect the H-LINK II wiring to
all the systems. The easiest method is usually to connect the outdoor units.