Section 3 - Manual Overrides Of Chilled Water Reset - And Other Settings - Carrier OPN-OPT-OL Installation And Startup Manual

Chilled water system optimizer v2
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Point Name/Description
for __:__ (mm:ss)
Present output is False for __:__ (mm:ss). — Displays value.
CHDT LO (BALM) ___ — Displays status.
Alarm if (chilled water return - supply temperature) is > __ degrees
hysteresis of __
for __:__ (mm:ss)
Present output is False for __:__ (mm:ss). — Displays value.

Section 3 - Manual Overrides of Chilled Water Reset - and other Settings

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i-Vu®
The program outputs a reset signal in the range of 0 - 10 (deg). This reset signal is not the actual temperature reset,
because the 0-10 (deg) reset is ultimately converted to a signal used by the equipment.
NOTE The (deg) designation does not indicate actual degrees, but the 0-10 output range of the algorithm that is converted
into an actual temperature
EXAMPLE The 0 - 10 (deg) reset range might be converted to 42 - 50°F reset signal used for a chilled supply temperature
setpoint. Therefore, the 0 - 10 (deg) reset signal is converted to a range of 0 - 8°F. Each reset increment of 1 (deg) would
actually be a 0.8°F increment.
Reset settings such as First Reset, Full Load Drop, Quick Cool Down, and any other temperature reset settings, are always
based on 0 - 10 (deg) program output, not the final output.
Point Name/Description
Manual "Reinitialize" & "Pause & Hold" - Override of the Optimizer Reset & Pause at it
Current Reset Setpoint
Reinitialize CHWS reset algorithm (resets algorithm logic to zero):
To manually reinitialize and reset the chilled water optimization, turn on by
selecting REINITIALIZE. After a few moments, this returns the program back to its
initial zero state.
Turn the reinitialize switch to Off to allow the program to operate again from its zero
state.
CAUTION This setting drops the setpoint back to its default temperature and
restarts the program from state zero.
Chilled Water System Optimizer v2
Installation and Start-up Guide
Appendix B: The Chilled Water System Optimizer Commissioning view of the Properties page
Properties
Control Program
>
Section 3 - Manual Overrides of Chilled Water Reset - and other Settings
75
Range
D:
10:00 (mm:ss)
R:
2:00 to 20:00 (mm:ss)
D:
4°F
R:
3 to 8°F
D:
2°F
R:
0.5 to 3°F
D:
10:00 (mm:ss)
R:
2:00 to 20:00 (mm:ss)
Chilled Water Temperature Optimizer Reset
>
Range
D:
Off
R:
Off/REINITIALIZE
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