Hitachi PSC-6RAD - Page 393

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Group conguration
• The group setting consists of the master unit setting and the slave unit setting. The indoor unit, which is connected
directly to the remote control switch, is set as the master unit, and the indoor unit connected with the transmission line
is set as the slave unit.
• Without the remote control switch, the control by the remote control switch group is not available. Therefore, in this
case, one indoor unit is set as one group. (Only the master unit is set without the slave unit).
• When setting the remote control switch group without transmission line between indoor units, the indoor unit con-
nected with the remote control switch shall be set as master unit.
• When using the remote control switch (PC-ART), the half-sized remote control switch (PC-ARH) or receiver kit
(PC-ALH*), after the setting of master unit, the central station automatically set the slave unit. Check for the setting
state by the slave unit setting mode.
System of up to 16 indoor units connected, refrigerant system address and indoor unit address.
The group is automatically set as zone Nº 1 by the indoor unit address regardless of the refrigerant cycle address. Set
the indoor unit address without duplication of address.
Setting of
Indoor Unit RSW
Group Number
The setting “0” to “15” or “0”
to “F” of indoor unit RSW is
corresponding to the group
Nº. “1” to “16” of central
station.
(The setting can be changed
by the procedure of “4.3.
System of more than 17
indoor units connected”)
• When using the remote control switch (PC-ART) or the half-sized remote control switch (PC-ARH)
and the receiver kit (PC-ALH*), the indoor units are automatically recognized as the slave unit of
the indoor unit 2 and set to the group 3. (The setting of the slave unit is not required. However, the
contents of the setting should be checked.)
• When using other controllers than the described above, the indoor unit can not be recognized as
the slave unit automatically, and set as the master unit of group 5. In this case change the setting
to the slave unit of the group 3 according to the above “Group Setting Procedure”.
Central
Station
5 Centralised remote controls
PSC-A64S
TCGB0106 rev.0 - 12/2014
377
5