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Appendix B: The Chilled Water System Optimizer Commissioning view of the Properties page
Section 4 - Optimizer Setpoint Change Mode
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Optimizer Setpoint Change Mode determines if the optimizer resets the setpoints automatically or requires manual
intervention and entry. The default is AUTOMATIC mode. During each response period, the optimizer determines a new
setpoint that best lowers energy consumption.
Modes:
AUTOMATIC – The optimizer calculates the new setpoint and then automatically changes it. It repeats every response
period. No operator is required.
MANUAL – The optimizer calculates the new setpoint, and requires an operator to change it. It repeats every response
period. An operator must continually monitor and change the setpoint.
Each response period, when the optimizer finishes its calculation, the optimizer instructs the operator to change to the
new setpoint, which should be changed within 2 minutes after each new setpoint is determined. If the operator delays
changing the setpoint, then the optimizer begins losing effectiveness in saving energy.
The optimizer calculates the next setpoint only after the operator changes it. The process repeats itself each response
period.
Point Name/Description
Optimizer is in: ___ mode— Select desired mode.
Optimizer is in MANUAL mode
CHILLED WATER SETPOINT - OPTIMIZATION
Optimizer Status — Displays the following statuses:
PRE-START UP – Optimizer doing pre-start calculations when first initiated
○
FIRST RESET – Optimizer ready for first reset
○
CALCULATING – Optimizer calculating next setpoint
○
NEW SETPOINT – Optimizer has new setpoint and is ready for acceptance
○
WAITING TURN – Setpoint calculation in waiting when stagger is ON
○
PAUSE IS ON – Displays when pause is ON
○
COOL DOWN IS ON – Displays when cool down is ON
○
AUTOMATIC – Displays when in AUTOMATIC mode
○
Countdown until "New Setpoint" is determined: — Displays value.
Optimizer Instructions — Displays status.
Elapsed time since "New Setpoint" is determined: ___ — Displays value.
Chilled Water System Optimizer v2
Installation and Start-up Guide
Properties
Control Program
>
Optimizer Setpoint Change Mode
66
General Conditions & Status
>
Range
D:
AUTOMATIC
R:
AUTOMATIC
MANUAL
R:
OFF
PRE-START UP
FIRST RESET
CALCULATING
NEW SETPOINT
WAITING TURN
PAUSE IS ON
COOL DOWN IS ON
AUTOMATIC
R:
(minutes:seconds)
R:
NO ACTION NEEDED
WAIT FOR RESULT
SETPOINT AVAILABLE
R:
(minutes:seconds)
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