Control Parameter; Figure 50 - Setting Screen - York YHAU-CW Manual

FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018

FIGURE 50 - SETTING SCREEN

This screen displays control parameters (setting
method and each setting parameter), valve operation
(control valve mode auto / manual and valve position
setting), operation switch (forced dilution, refrigerant
pump, purge mode, and manual purge), language (Jap-
anese, English, German, Chinese, and Deutsche) and
date and time parameters.
Press the SETTING button to access this screen.

Control Parameter

The Control Parameter section of the Setting screen
is used to enter parameters for the cooling operation,
such as target temperature, automatic stop temperature,
and differential to automatic restart.
Setting Method: The LOCAL and REMOTE but-
tons control whether the set point is being set using the
Control Panel or from a remote location. The button
that is lit indicates if the set point is being set using the
Control Panel or from a remote location
Setting Base Temp.: the base temperature for calculat-
ing the set point
Remote Set. Diff.: the setting range with external 4-20
mADC signal
JOHNSON CONTROLS
SETTING SCREEN
Set Point (Display): the set point of the chilled water
leaving temperature
Automatic Stop: the temperature at which the chiller
will automatically stop
Auto. Restart Diff.: temperature difference between
the temperature at which the chiller will automatically
stop and the temperature at which the chiller will auto-
matically restart.
If you press the LOCAL button, the entered base tem-
perature corresponds to the present target temperature.
This temperature is shown in the Set Point field.
Setting
Base
Temp.
+
Remote
Setting
Diff.
Setting
Base
Temp.
SECTION 6 – OPERATION
LD19933
LD19933_UL
Setting
Base
Temp.
+
Remote
Setting
Diff.
Setting
Base
Temp.
4 mADC
Remote Setpoint Setting Signal
(4~20 mADC)
4 mADC 20 mADC
Remote Setpoint Setting Signal
(4~20 mADC)
6
20 mADC
LD20038a
127