Hitachi FS3 Series, Service Manual, Page: 221 / 240

4
OPTIONAL FUNCTION
21
a. Installation of Air Panel for Wireless Control
In case of simultaneous operation of plural (up to 16)
units by the wireless remote control switch, apply the air
panel for wireless control only to the unit to be
operated, and apply the standard panels (for wired
control) to other units. In case of applying plural air
panels for wireless control, up to 2 air panels for
wireless control can be used.
In case of applying two (2) air panels for wireless control,
the setting of main and sub receiver part is required. Refer
to the item 4.4.5 "Optional Function Setting" for the dip
switch setting procedures.
b. Perform wiring between indoor units as shown in the
figure below.
* The total length of the wire shall be 200m or shorter.
(for 0.75mm~ wire 500m or shorter)
* Use the following three cable wire in the system parts.
Model PRC-10E PRC-15E PRC-20E
Length 10m 15m 20m
c. Connected unit control wires should not be installed
parallel to 220-415V power cables. Fix them by utilizing
bands. It is recommended that cables be installed at
least 30cm away from power cables or be put into
grounded metal pipes.
d. Set the Rotary Switches (RSW) on the printed circuit
boards of respective units as shown in the next table.
Unit nº 0 Unit nº 1 Unit nº 2 Unit nº 3
Unit nº 4 Unit nº 5 Unit nº 6 Unit nº 7
Unit nº 8 Unit nº 9 Unit nº 10 Unit nº 11
Unit nº 12 Unit nº 13 Unit nº 14 Unit nº 15
&
CAUTION:
If the setting of the Rotary Switches (RSW) is not
performed correctly, the operation LED (Red) on
the panel flickers and the unit can not be operated
due to the abnormal setting of the indoor unit
number.
e. Identify the indoor units by attaching the nameplates of
unit number (field-supplied) to the indoor units when
setting the rotary switches (RSW) for each indoor unit.
Wireless
Controller
Wireless
Panel Standard
Panel Standard
Panel
Standard Panel or
Wireless Panel
Should be Standard Panel
Setting When Shipment
Rotary Switch (RSW)
Receiver
CN13(Blue)
"Remote Control"
CN13(Blue)
"Remote
Control"
CN13(Blue)
"Remote
Control"
CN12(Yellow)
"Multi" CN12(Yellow)
"Multi"
Use 3-core cable
of 0.3-0.75mm²
(SEE TABLE)
CN12(Yellow)
"Multi"
2-Cores(Red & Black) or 3-cores 2-Cores(Red & Black) or 3-cores 2-Cores(Red & Black) or 3-cores
PCB of Main Unit PCB of Branch Unit (No.1) PCB of Branch Unit (No.2)
Setting position
Set by inserting a
screwdriver into the
groove.
Nameplates of
Unit Number
Receiver Part