Hitachi FSG1 Series Technical Catalogue page 342

ELECTRICAL WIRING
15
/12
- Line Connection for Each Floor
Outdoor Units
Indoor Units
- Connection with One Main Line and branch Lines for
Units
Outdoor Units
Indoor Units
§ Using H-LINK System For Air Conditioners With Central
Control Device
- In case that H-LINK is applied when electrical wiring is
performed
Outdoor Unit
Indoor Units
~Instrument Wiring
CS-NET
- In case that H-LINK is not applied when electrical wiring
is performed
Outdoor
Unit
~Instrument Wiring
CS-NET
?
NOTE:
The maximum quantity of units to be connected is 16
outdoor units and 128 indoor units.
Do not make a wiring in a loop.
In the case that H-LINK is not applied after the when
electrical wiring is performed as shown above, H-LINK
is applied after the instrument wiring is completed.
Therefore, the dip switches are required to be set
according to "Setting of Dip Switches on PCB".
4. Dip Switch Setting of Indoor PCB and Outdoor PCB
It is required to set dip switches of every indoor unit and
outdoor unit
§ Dip Switch Setting (example:)
Cycle No. 0 Cycle No. 1
Before
Cancelation
Shipment
Mar Description
k
É
DSW10 (End Terminal Resistance)
Ê
DSW1 (Refrigerant Cycle)
Ë
Outdoor Unit
Ì
Indoor Units
Í
DSW5 (Refrigerant Cycle)
Î
RSW (Indoor Unit Address)
Indoor Units
Cycle No. 2
Cancelation