Hitachi PSC-A64S - Page 13

12
GROUP SETTING
b. Select the refrigerant system address and
indoor unit address to set. The refrigerant
system address is changed by depressing
"
∇" (TEMP) switch and the indoor unit
address is changed by depressing "Δ"
(TEMP) switch in order as shown below. In
this case, the switch is kept depressing, and
the indication of the refrigerant system
address or the indoor unit address is fast-
forwarded.
The above figure shows the case of
selecting Ref. Nº. "1" and I. U. Add. "2".
• ATTENTION:
A. Ref. Nº with no indoor unit connected and I.U. Add. not connected are not indicated.
B. When the selected unit is already set as slave unit, the zone and the group Nº
indication "°" of the unit and "SET" indication appear.
C. The indoor unit already set as the master unit is not indicated.
c. Select of Zone to be set.
Depress the "ZONE" switch, and the
flickering indication of zone Nº is changed in
order as shown below.
*
The zone, in which there is no group with the master
unit already set, is not indicated.
The above figure shows the case of
selecting Zone “2”.
d. Select of Group to be set
Depress the "GROUP"  switch, and the
flickering indication of group Nº is changed in
order as shown below.
*
The group, in which the master unit is not set, is not
indicated.
The above figure shows the case of
selecting Zone “2” and group “2”
e. Setting Procedure
Depress the "RUN/STOP" switch after
selecting zone and group, the slave unit is
set.
The "SET" indicator and the "°" indicator of
group turn ON.
f. Perform the slave unit setting procedure “b”
to “e” for each group and zone.
g. After completion of the slave unit setting,
change the mode to the standard state by
depressing "RESET" switch.
 CAUTION:
- Up to 15 slave units can be set in one group (Max. 16 units (including the master unit) in one
group).
- For changing the setting of slave unit to another group, cancel the present slave unit setting
and perform the setting for another group.
- In case that all the units are set as the master unit, the central station can not be changed to
the slave unit setting mode.
- When there is any group in operation (with "RUN" indicator ON), the "CHECK" mode is not
available.