JOHNSON CONTROLS
64
FORM 160.10-O1
ISSUE DATE: 4/27/2018
SECTION 2 - OPTIVIEW OPERATION
Leaving Chilled Liquid Temperature Cycling –
Shutdown
Displays the leaving chilled liquid temperature at
which the chiller will shut down to avoid over-cooling
the building. This value is calculated by subtracting the
Leaving Chilled Liquid Temperature Cycling Offset
Shutdown from the Leaving Chilled Liquid Tempera-
ture Setpoint. If this value is programmed below the
absolute minimum allowed shutdown temperature, the
minimum allowed shutdown value is displayed.
Leaving Chilled Liquid Temperature Cycling –
Shutdown Offset
Displays the programmed number of degrees below the
leaving chilled liquid temperature setpoint the chilled
liquid is permitted to reach until the OptiView Con-
trol Center will perform a cycling shutdown to avoid
overcooling.
Leaving Chilled Liquid Temperature Cycling –
Restart
Displays the leaving chilled liquid temperature at
which the chiller will restart after being shut down
OVERVIEW
This screen provides a convenient location for pro-
gramming the most common setpoints involved in the
chiller control. This screen also serves as a gateway to
a sub-screen for defining the setup of general system
parameters.
DISPLAY ONLY
Leaving Chilled Liquid Temperature – Setpoint
Displays the present leaving chilled liquid tempera-
ture setpoint. This value could come from a 0-20 mA,
4-20 mA, 0-10VDC or 2-10VDC input in analog re-
mote mode, PWM signal in digital remote mode,
MicroGateway interface in ISN (Integrated Systems
Network) mode, or programmed locally at the control
center in local mode.
Leaving Chilled Liquid Temperature – Remote
Range
This displays the range the leaving chilled liquid tem-
perature setpoint can be remotely adjusted beyond the
temperature set locally at the OptiView.
SETPOINTS SCREEN
ID10004
FIGURE 24 - SETPOINTS SCREEN
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