Dip Switch Setting - Hitachi MULTIZONE RAM-40NE2F Technical Catalogue

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.
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.
•
Connection of Transmission Cable
H-LINK transmission cable connecting to RAC adaptor shall
be connected to H-LINK.
Connector
(Accessory)
Use enclosed
connector
RAC Adaptor
H-LINK wiring
Fixed position
Band
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.
– 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.
– The RAC Adaptor side cable should not overload to the
connector.
– DO NOT clamp the cable when attaching the RAC
adaptor cover.
– Band should not be loose and in fixed position.

10.2.4 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.
2) The position of the DIP switch is shown below.
DSW1 (Refrigerant
cycle# setting)
DSW2 (Unit#
setting)
LED
H-LINK
transmission
DSW3
Unit# setting
LED
To other
connection
device of H-LINK
PCB
RSW1 (Refrigerant
cycle# setting
RSW1
Unit# setting
DSW4
(Fuse recovery
and terminal
resistance
setting
Error! Reference source not found.
CAUTION:
– DO NOT turn ON various pins of DSW1 and DSW2
3) Set the refrigerant cycle# by RSW1 and DSW1
DSW1 (Ten digit)
Position
ON
OFF
DSW1 and RSW1 are set "0" before shipment. Up to 15
cycles can be set.
E.g. Setting in Ref No. 5
ON
OFF
No. 1 pin is OFF
4) Set the unit No. by RSW2 and DSW2
DSW2 (Ten digit)
Position
ON
OFF
DSW2 and RSW3 are set "0" before shipment. Up to 15
cycles can be set.
E.g. Setting in Unit No. 15
ON
OFF
No. 1 pin is OFF
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.
Master Unit setting
ON
ON


: Master Unit setting
: Setting before Shipping (Slave Unit setting)
10-15
RSW1 (Last digit)
Turn by using
a screw driver
RSW1
The position is Set 5
RSW2 (Last digit)
Turn by using a
screw driver
RSW2
The position is Set 5
Setting before shipping
(slave unit setting)