Setpoints Screen; Figure 16 - Setpoints Screen - York YR Manual

Optiview Control Center
SECTION 2 - OPTIVIEW™ CONTROL CENTER

FIGURE 16 - SETPOINTS SCREEN

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 setpoint to which the chiller is
operating whether controlled remotely or locally. This
value could come from a 0 to 20mA, 4-20 mA, 0 to
10VDC or 2 to 10VDC input in Analog Remote mode,
PWM signal in Digital Remote mode, MicroGate-
way interface in ISN Remote mode, or a locally pro-
grammed value in Local mode.
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 Off-
set – Shutdown from the Leaving Chilled Liquid Tem-
perature – Setpoint. If this value is below the absolute
minimum allowed shutdown temperature the minimum
value is displayed.
48

SETPOINTS SCREEN

Leaving Chilled Liquid Temperature Cycling Restart
Displays the Leaving Chilled Liquid Temperature at
which the chiller will restart after it has shut down due
to over-cooling temperature. This value is calculated
by adding the Leaving Chilled Liquid Temperature Cy-
cling Offset – Restart to the Leaving Chilled Liquid
Temperature – Setpoint.
Current Limit Setpoint
Displays the present setpoint to which the chiller is
operating whether controlled remotely or locally. This
value could come from a 0 to 20mA, 4 to 20mA, 0 to
10VDC or 2 to 10VDC input in Analog Remote mode,
PWM signal in Digital Remote mode, MicroGateway
interface in ISN remote mode, or a locally programmed
value in Local mode.
Programmable
Leaving Chilled Liquid Temperature - Remote
Range
Access Level Required: OPERATOR
This is the range over which an analog signal (0 to
20mA, 4 to 20mA, 0 to 10VDC or 2 to 10VDC) in An-
alog Remote mode or a digital signal (PWM) in Digi-
tal Remote mode can reset the Leaving Chilled Liquid
FORM 160.81-O1 (1020)
ISSUE DATE 10/05/2020
LD12826
JOHNSON CONTROLS