Start-up and Commissioning
Chilled Water System Optimizer v2
CARRIER CORPORATION ©2019
Installation and Start-up Guide
40
All rights reserved
Sequence
Expand
Condenser Water Temperature Optimizer Reset
for the following:
Section 1 - Condenser Water System Optimizer – Enable Conditions
(page 82)
Verify
CWS Optimizer ON Switch
is set to to
DISABLED.
Section 2 - Manual Overrides of Condenser Water Reset
(page 83)
Verify the following:
1
Manual
"
Reinitialize" & "Pause
& Hold"
are both
Off
.
2
Manual "Quick Warm Up"
conditions have been set appropriately to match the system’s operating
requirements. We recommend that you use the default values initially unless changes are required.
3
The quick warm up status displays
Quick Warm Up is: OFF
. If it is on, then determine which condition is
causing it to display ON and correct as necessary.
4
Configure the
First Reset
by initially using the default value of 6 (deg). Adjust after observing the response.
NOTE
This value should be between 4.0 and 8.0 (deg).
EXAMPLE
Your default
Resting
temperature (
Condenser Water Optimizer Operation Overview - Notes
>
Condenser Water Supply Setpoint Range - Based on OA Wet Bulb Temperature
(the condenser water supply
temperature setpoint when the optimizer is off) is set to 8 degrees above wet bulb. Your
First Reset
priming
temperature might be 7 degrees above wet bulb. This first reset would lower the condenser water supply
temperature by 1 degree (from 8 degrees to 7 degrees above wet bulb). This would result in the fans running
slightly faster (increasing energy use at the fans) and lowering the lift slightly at the chiller (reducing energy
demand at the chiller). This
First Reset
starts the optimization program in its search for lower energy use and
balancing lower energy demand at the chiller with higher energy demand at the tower fans (and any variable
flow pumps).
5
Initially start with a default Input Smoothing value of 50 and then fine tune it according to your system.
6
System Response Time in minutes:
is set to the initial response time.
NOTE
Start with 5 minutes for a facility where the cooling towers are near the chiller, and 8 to 10 minutes for
a facility where they are remote.
