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8
CONTROLS
Operation Switch Section
The above figure shows the central station with the cover opened.
When opening the cover, pull the cover toward the arrow direction.
6.
CONTROLS
- "INDVDL" is indicated at the display panel during this control. There
are two controls available. One is group registration (see the item
"Group Registration Procedure").The control enables each unit control.
The other is the simultaneous group control. By pressing the unit
switch, the units Nos. are changed. "AA" indicates all the units which
were registered.
Individual Control
- The contents which are different depending unit except RUN lamp are
not indicated during indicating unit No. "AA". (For example,
Operation/Heat Storage Mode, Setting Temperature, Local, etc.)
- Option setting is possible by selecting the following setting. (Refer to
option setting procedure.) ON/OFF Differential Setting ••• Option 1
- "MULTI" is indicated at the display panel during this control. The unit
which was set as group registration is automatically ON/OFF
controlled by detecting the set temperature and sensing temperature.
(If "UNIT SELECTION" switch is pressed during normal mode, "NO
FUNC." is indicated.)
- The control for the chillers up to 8 units are performed by sensing the
minimum water temperature during cooling and the maximum water
temperature during heating respectively.
- In case of inlet (outlet) water temperature control, the chiller units are
Multiple-unit
controlled by the minimum / maximum inlet (outlet) water temperature
Control
detected in the same group units.
- Option setting is possible by selecting the following setting.
(Refer to the option setting procedure on page 19)
ON/OFF Differential Setting ••• Option 1
Selecting Inlet or Outlet Water Temperature Control ••• Option 2
Selecting Availability of Capacity Control for the Unit which is Stopped
Finally ••• Option 3
Selecting Availability of Pump ON/OFF Control of the Unit which is
Stopped by Thermostat ••• Option 4
NOTE:
- This control function is selected by setting No.1 pin of the DSW2 switch at ON or OFF side.
This setting is necessary before the power is supplied. (This setting change is not available after
supplying the power.)
- If this setting change is required, contact your local installer.
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