Examples Of The System Of Connection Between H-Link And H-Link Ii Units - Hitachi RAS-(3-6)HVNC1(E) Service Manual

4 Electrical wiring
Unit Name of DIP switch
Refrigerant cycle
Outdoor
Unit
Resistance of terminal
Refrigerant cycle
Indoor
Unit
Address of the indoor unit
4.5.4 Examples of the system of connection between H-LINK and H-LINK II units
In the case of mixed systems with H-LINK and H-LINK II, set the H-LINK units in the first 16 position of the system, as
in the following example where 42 systems are connected, 16 with indoor FSN1E units and 26 with indoor FSN2E units.
B
A
C
D
A: Refrigerant cycle.
B: Outdoor unit.
C: Indoor unit.
D: Indoor unit address.
E: Either the current remote control switch (H-LINK) or the new one (H-LINK II) can be used.
F: Only the new remote control switch (H-LINK II) can be used.
N O T E
• The maximum number of indoor units than an H-LINK II can control is 160.
• If you use PSC-5S and the CSNET WEB 2.0 (systems only compatible with H-LINK) bear in mind that it will only rec-
ognize 16 indoor and 16 outdoor units.
113
SMGB0087 rev.0 - 12/2013
Mark Setting before the Shipment
DSW4
RSW1
DSW5
DSW5
DSW5
RSW2
DSW6
DSW6
RSW1
A A
A
D
E
Function
For setting the refrigerant cycle address of
the outdoor unit. Set the DSW4 and RSW1 to
overlap the setting of other outdoor units in
the same H-LINK system.
To adapt the impedance of the transmission
circuit, adjust DSW5 according to the number
of outdoor units of the H-LINK system.
RSW2
For setting the refrigerant cycle address of
the indoor unit. Set the DSW5 and RSW2
corresponding to the address of outdoor unit
in the same refrigerant cycle.
Setting indoor unit address. Set the DSW6
RSW1
and RSW1 not to overlap the setting of other
indoor units in the same refrigerant cycle.
(If no set, the automatic address function is
performed.)
A A
A A
D D
F
4