Installation and operation manual
20
EWWD440~850AAYNNO**
Packaged water-cooled water chillers
4PW25558-1B
Remote operation “REMOTE”
Selection between remote operation (“REMOTE”) or local
operation (“LOCAL”) for the unit to run or to stop, is set on the
graphic panel display.
[“MENU”
➞
“OPERATION”]
1
Select "REMOTE" in advance
2
Input the run/stop signal remotely.
Confirming the ON/OFF condition
On the unit
Several operational conditions can be read from the state of the
lamps on the switch box door of the unit.
1
Push the start button (green)
If “REMOTE” is selected on the touch panel control screen,
this button is disabled.
2
Push the stop button (red)
This button always takes effect irrespective of the “LOCAL” or
“REMOTE” setting on the display panel.
The stop button on the switch box door always takes
effect irrespective of the “LOCAL” or “REMOTE”
setting on the display panel. However, if you stop the
unit with the stop button while “REMOTE” is selected,
the “REMOTE” selection shifts to “LOCAL”
automatically.
NOTE
■
This is the screen of models with 2-
temperature setting option.
In the screen for standard models, the field
for cooling mode selection does not appear.
■
Selection must be made while the unit is
stopped.
Switching between "REMOTE" and "LOCAL"
while the unit is operating (even when
thermostat is OFF) causes the unit to stop.
1
2
CAUTION
Do not apply voltage in case of the voltage free
configuration.
It may lead to damage of the PLC.
■
Refer to the wiring diagram delivered with the
unit.
■
In case of instantaneous contact input
specification, a pulse width of 200 msec or more
is required.
■
The stop button on the switch box door always
takes effect irrespective of the “LOCAL” or
“REMOTE” setting on the display panel.
However, if you stop the unit with the stop button
while “REMOTE” is selected, the “REMOTE”
selection shifts up to “LOCAL” automatically.
■
If you want to operate the unit remotely
continuously, you need to reselect the “REMOTE”
setting in the graphic panel display again before
operation.
Power
ON/OFF
Error
Remote
operation
Chiller ON Compressor 1
ON
Compressor 2
ON
Chiller OFF
502
71
72
501
50
Stop
Run
Normal voltage free
contact (standard)
Instantaneous contact
specification (Optional)
