Hitachi UTOPIA R32 Series - H-LINK II System; Features; Specifications

10 Electrical wiring
H-LINK II system
TCGB0136 rev.1 - 05/2021
107
10
10.5 H-LINK II system
The H-LINK II is the wiring connection system between units.
The H-LINK II wiring system only needs:
• Two transmission wires connecting each indoor and outdoor unit for a total of 64 refrigerant cycles.
• Connection wiring for all indoor and outdoor units in series.
! CAUTION
TheH-LINKIIsystemcannotbeappliedtothemodelswiththeoldcycle,nortounitswithanoldtransmission.
10.5.1 Features
• The total wiring length is considerably reduced compared to traditional connections.
• Only one connection is required for the wiring between the indoor and outdoor units.
• The wiring connection of the complementary central control devices is easy.
? NOTE
CSNETWEB/CSNETManageriscentralizedcontrolsystemwhichallowstheinstallationtobecontrolledremotely.Itcanbeconnected
atanypointofthelocalcorporatenetwork,orevenviatheInternet.
10.5.2 Specications
A: outdoor unit.
B: indoor unit.
C: refrigerant cycle.
D: transmission cables.
E: refrigerant piping.
• Transmission cable: 2-wire.
• Polarity of transmission cable: non-polar wire.
• The maximum number of units that can be connected is 64
outdoor units and 160 indoor units (including UTOPIA and/or
SET FREE models) per H-LINKII system.
• Maximum wiring length: total 1000 m (including CSNET
Manager 2).
• It is possible to increase the maximum wiring length up to
5000 m by using up to four PSC-5HR units.
• Recommended cable: shielded twisted pair cable, over
0.75 mm
2
(Equivalent to KPEV-S).
• Voltage: 5 V DC.
CSNET Manager 2
! CAUTION
FortheH-LINKIIsystemmustusetwistedshieldedpaircableorshieldedpaircable.