Hitachi RAS-4-HNCE - Examples of the System of Connection between H-LINK and H-LINK II Units

4. Electrical wiring
103
SMGB0079 rev.0 - 01/2013
4
Unit Name of DIP switch Mark Setting before the Shipment Function
Outdoor Unit
Refrigerant cycle
DSW4
RSW1
For setting the refrigerant cycle
address of the outdoor unit. Set the
DSW4 and RSW1 to overlap the set-
ting of other outdoor units in the same
H-LINK system.
Resistance of terminal DSW5
To adapt the impedance of the trans-
mission circuit, adjust DSW5 according
to the number of outdoor units of the
H-LINK system.
Indoor Unit
Refrigerant cycle
DSW5
RSW2
DSW5
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.
Address of the indoor unit
DSW6
RSW1
DSW6
RSW1
Setting indoor unit address. Set the
DSW6 and RSW1 not to overlap the
setting of other indoor units in the
same refrigerant cycle. (If no set, the
automatic address function is perfor-
med.)
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 rst 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.
A A A A
A A A A
D
E F
C
B
D D 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
recognize16indoorand16outdoorunits.