Hitachi RAC-25FPA RAC25FPA User Manual
Product codes
RAC25FPA
15-9
iii) Install the electrical box cover paying
attention not to clamp the cable. Read the
installation manual of each room air-
conditioner for confirming how to connect and
how to assemble the cable of the RAC
adaptor.
installation manual of each room air-
conditioner for confirming how to connect and
how to assemble the cable of the RAC
adaptor.
CAUTION:
–
–
Disconnect the power plug before performing this work
–
Turn OFF the break power source in case the power is
supplied from the outdoor unit.
supplied from the outdoor unit.
•
Connection of Transmission Cable
H-LINK transmission cable connecting to RAC adaptor
shall be connected to H-LINK.
shall be connected to H-LINK.
CAUTION:
–
–
DO NOT connect incorrect wiring. It may cause the
failure of the RAC Adaptor. Especially pay attention
not to apply high voltage e.g. AC400/230V.
failure of the RAC Adaptor. Especially pay attention
not to apply high voltage e.g. AC400/230V.
–
DO NOT perform the wiring work while power to the
central station or the RAC Adaptor is still being
supplied.. It may cause malfunction. Turn OFF devices
when performing the wiring work.
central station or the RAC Adaptor is still being
supplied.. It may cause malfunction. Turn OFF devices
when performing the wiring work.
–
The RAC Adaptor side cable should not overload to
the connector.
the connector.
–
DO NOT clamp the cable when attaching the RAC
adaptor cover.
adaptor cover.
–
Band should not be loose and in fixed position.
15.3.4. DIP SWITCH SETTING
1) Switch OFF the power of room air conditioner before
setting the DIP switch. If the power is ON, the settings
are INVALID.
are INVALID.
2) The position of the DIP switch is shown below.
CAUTION:
–
–
DO NOT turn ON various pins of DSW1 and DSW2
3) Set the refrigerant cycle# by RSW1 and DSW1
DSW1 (Ten digit)
RSW1 (Last digit)
DSW1 and RSW1 are set “0” before shipment. Up to 15
cycles can be set.
cycles can be set.
E.g. Setting in Ref No. 5
4) Set the unit No. by RSW2 and DSW2
DSW2 (Ten digit)
RSW2 (Last digit)
DSW2 and RSW3 are set “0” before shipment. Up to 15
cycles can be set.
cycles can be set.
E.g. Setting in Unit No. 15
5) Slave unit.
In case of setting various RAC adaptors in the same
refrigerant cycle, set the RAC adaptor with smallest
Unit# as a master unit. In case of setting only one RAC
adaptor in a refrigerant system, this adaptor should be
a master unit. Set this procedure by DSW3.
refrigerant cycle, set the RAC adaptor with smallest
Unit# as a master unit. In case of setting only one RAC
adaptor in a refrigerant system, this adaptor should be
a master unit. Set this procedure by DSW3.
Master Unit setting
Setting before shipping
(slave unit setting)
: Master Unit setting
: Setting before Shipping (Slave Unit setting)
Use enclosed
connector
connector
Connector
(Accessory)
(Accessory)
RAC Adaptor
H-LINK wiring
H-LINK wiring
To other
connection
device of H-LINK
connection
device of H-LINK
Fixed position
Band
PCB
RSW1 (Refrigerant
cycle# setting
cycle# setting
RSW1
Unit# setting
DSW1 (Refrigerant
cycle# setting)
cycle# setting)
DSW2 (Unit#
setting)
setting)
LED
H-LINK
transmission
H-LINK
transmission
DSW3
Unit# setting
LED
LED
DSW4
(Fuse recovery
and terminal
resistance
setting
(Fuse recovery
and terminal
resistance
setting
ON
OFF
Position
Turn by using
a screw driver
a screw driver
ON
OFF
No. 1 pin is OFF
RSW1
The position is Set 5
ON
OFF
OFF
Position
Turn by using a
screw driver
screw driver
ON
OFF
No. 1 pin is OFF
RSW2
The position is Set 5
ON
ON