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Technical Information

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Features and benets
TCGB0079 rev.0 - 01/2013
25
2.4 Installation benets
2.4.1 Easy and exible electrical installation
Adopting transmission system H-LINK II
The  units  interconnect  via  a  bus  called  H-LINK  II,  consisting  of  2  non-polarity  cables  and  accepting  lengths  of  up  to 
1,000 m. Accessories are available if required to increase this length to 5,000 m.
Up to 160 indoor units connected to each circuit
Each H-LINK II bus can communicate up to 160 indoor units. Tak-
ing into account the absence of polarity and the length of line per-
mitted, the exibility of the interconnection between the machines 
is very high. This lets you, for example, connect the H-LINK II of a 
cooling system’s indoor unit to the H-LINK II of another system’s 
indoor unit.
Specications
Transmission cable 2-wire
Polarity of transmission cable Non-polar wire
Maximum refrigerant cycles 64 units per H-LINK II system
Maximum indoor units
160 units per H-LINK II system
64 units per refrigerant cycle.
Maximum number of equipment units 200
Maximum wiring length Total 1,000 m (including CS-NET WEB)
Recommended cable Shielded twisted pair cable or shielded pair cable, over 0.75 mm
2
 (equivalent to KPEV-S)
Voltage DC 5 V
No operating cable for the remote control (simultaneous operation setting)
In the case of multiple indoor unit systems, the indoor units with 
simultaneous operation setting can be controlled using a single
remote control switch without having to join them with an operating
cable for the remote control.
A. Operation wiring.
B. An operating cable is not required for using the remote control
switch.
N O T E
•  WhenusingtheH-LINKIIsystem,DIPswitcheshavetobeadjusted.IftheDIPswitchesarenotsetorthey
aresetincorrectly,analarmmayoccurduetotransmissionfailure.Totalwiringlengthfortheremotecontrol
switchcanbeextendedtoupto5,000m.Iftotalwiringlengthislessthan30m,itispossibletousethenormal
wiring(0.3mm²).
2
TCGB0079_rev0_11-2012.indb 25 29/01/2013 14:26:56