Appendix B: The Chilled Water System Optimizer Commissioning view of the Properties page
Chilled Water System Optimizer v2
CARRIER CORPORATION ©2019
Installation and Start-up Guide
75
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Point Name/Description
Range
for __:__ (mm:ss)
Present output is False for __:__ (mm:ss). — Displays value.
D:
R:
10:00 (mm:ss)
2:00 to 20:00 (mm:ss)
CHDT LO
(BALM)
___ —
Displays status.
Alarm if (chilled water return - supply temperature) is > __ degrees
D:
R:
4°F
3 to 8°F
hysteresis of __
D:
R:
2°F
0.5 to 3°F
for __:__ (mm:ss)
Present output is False for __:__ (mm:ss). — Displays value.
D:
R:
10:00 (mm:ss)
2:00 to 20:00 (mm:ss)
Section 3 - Manual Overrides of Chilled Water Reset - and other Settings
Navigation:
i-Vu®
Properties
>
Control Program
>
Chilled Water Temperature Optimizer Reset
>
Section 3 - Manual Overrides of Chilled Water Reset - and other Settings
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
Range
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.
D:
R:
Off
Off/REINITIALIZE