Special Installation Methods - Fujitsu RCF24LBL Installation Manual

9.4. Special installation methods

This possible only the wired remote control. (Option)
CAUTION
• When setting DIP switches, do not touch any other parts
on the circuit board directly with your bare hands.
• Be sure to turn off the main power.
9.4.1. Simultaneous multi-system operation
• By combining with an outdoor unit, 2 units for twin and 3 units
for triple indoor units, can be switched ON/OFF simultanne-
ously.
• When different indoor unit models are connected some func-
tions may no longer be available.
(1) Wiring method
• Refer to 6.ELECTRICAL WIRING for wiring procedure and
wiring method.
• The indoor unit is connected the outdoor unit using a trans-
mission cable is "master".
• Connect the remote controller wire to the master unit.
Twin type
Outdoor
Remote Indoor
controller unit ①
[master]
Triple type
Outdoor
unit
Remote Indoor
unit ①
controller
[master]
: Transmission cable, Power supply cable
: Remote controller cable
(2) DIP switch setting (Indoor unit)
Set the unit number of each indoor unit using the DIP
switches on the indoor unit circuit board. (See the follow-
ing table and fi gure.)
The DIP switches are normally set to make the unit
number 00.
Indoor unit Unit number
00
①
01
②
02
③
DIP switches
Circuit board in the control box of indoor unit.
NOTE
Be sure to set the unit numbers sequentially.
En-16
unit
Indoor
unit ②
[slave]
Indoor Indoor
unit ② unit ③
[slave] [slave]
: Power supply cable
: Bus wire
DIP SWITCH No.
1 2 3 4
OFF OFF OFF OFF
ON OFF OFF OFF
OFF ON OFF OFF
Example :
Unit number 02
ON
1 2 3 4
(3) Remote controller setting
1. Turn on all of the indoor units.
When the indoor units are turned on, error codes 01
and 31 will be displayed; however, these error codes
will be deleted by setting the remote controller.
Therefore, continue with the setting procedure.
2. Set the master and slave settings.
Set the indoor unit that is not connected to the outdoor
unit using a transmission cable as the "01" .
(The setting value is factory-set to "00".)
Indoor unit Unit number
00
①
01
②
02
③
(Only triple type)
3. After completing the function settings, turn off all of the
indoor units, and then turn them back on.
* If error code 01, 1F, 30, 31, or 32 is displayed, there
may be an incorrect setting. Perform the remote
controller setting again.
Twin type
Outdoor
unit
Remote Indoor
controller unit ①
(master)
DIP switch setting
(Indoor unit) 00
• Unit number
Remote controller
setting 00
• Unit number
• Setting value
00
(Master/Slave)
Triple type
Outdoor
unit
Remote Indoor
controller unit ①
(master)
DIP switch setting
(Indoor unit) 00
• Unit number
Remote controller
setting 00
• Unit number
• Setting value
00
(Master/Slave)
: Transmission cable, Power supply cable
: Remote controller cable
Function
Setting Value
Number
00(Master)
01(Slave)
51
01(Slave)
Indoor
unit ②
(slave)
01
01
01
Indoor Indoor
unit ② unit ③
(slave) (slave)
01 02
01 02
01 01
: Power supply cable
: Bus wire