8
GROUP SETTING
4.1.2. SYSTEM OF MORE THAN 17 INDOOR UNIT CONNECTED
In this case, the group setting by central station is required. Group setting is for master unit (directly
connected to remote control switch) and slave unit (connected by extension cable).
In case that the remote control switch is not connected, the group setting by remote control switch is
not available and only one master unit is controlled as one group.
In case of up to 16 indoor units connected, the group setting is automatically performed as described
in “4.2. System of less than 16 indoor units connected, Refrigerant system address and indoor unit
address”. In this case, correct the group setting by the next procedure.
4.2. SETTING OF MASTER UNIT
4.2.1. INDICATION OF MASTER UNIT SETTING MODE
When the central station is changed to the master unit setting mode, the LCD indication on the
central station is as shown below. The indication of the group to be set is flickered. The refrigerant
cycle Nº (hereafter called "Ref. Nº") and the indoor unit address (hereafter called "I.U. Add.")
indicates the address of the indoor unit which is set as the master unit of the group to be set.
The "°" indication of group flickers in case that the master unit of the group is set. When the "SET"
indication appears, the indoor unit indicated on LCD is set as the master unit.
In case that the master unit is not set, "- -" is indicated at Ref. Nº and I.U. Add., and the "SET"
indication does not appear.
*When there is one or more group with indoor unit set as master unit in the zone, the zone
indication "°" turns ON.
The above figure shows that the indoor unit of Ref. Nº. "00" and I.U. Add. "02" is set as the master
unit for Group 1 of Zone 1.
Central
Station
Master
Slave
Slave
Master
Master Master
Refrigerant No. Setting 1 1 2 2 3 3
Indoor Unit RSW Setting 0 1 0 1 0 1
Group Number 1 2 3 4
Without Remote
Control Switch
Ref. No. of Indoor Unit to be Set
(Can be changed by depressing the "
Æ" (TEMP) switch.)
"1" shows the master
unit setting mode.
Group Nº. to be Set
Zone Nº. to be Set
Condition of master unit setting for each zone:
(° is ON: There is any group with the master unit set./
° is OFF: There is no group with the master unit set.)
When the "SET" indication appears, the
indicated indoor unit is set as the
master unit. (When "SET" does not
a
Address of Indoor Unit to be set (can be
changed by depressing the "Å" (TEMP)
switch.)
When the "CHECK" indication appears,
the central station is in the check mode.
Condition of master unit setting for each group:
(° is ON: The master unit is set./
° is OFF: The master unit is not set.)
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