Start-up and Commissioning
Chilled Water System Optimizer v2
CARRIER CORPORATION ©2019
Installation and Start-up Guide
36
All rights reserved
2
Quick Cool Down:
is
Off
.
3
Quick Cool Down incremental drop: __
(deg) is the value used for each interval when quick cool down is
required. Use the default value initially and adjust as required.
4
Initially use the default value 1.25 (deg) for the
First Reset
. Adjust after observing the response. This value
should be between 0.7 and 2.0 (deg).
5
Input Smoothing is reasonable
NOTE
You should start with the default of 50 and then fine tune it according to your system after it has been
running for a while.
6
System Response Time in minutes
is set to the default initial response time of 15 minutes.
NOTE
Start with 10 / 15 minute value for a small / medium commercial building.
7
Set
Minimum and Maximum Reset Increments & Algorithm Reset Gains
, starting with:
○
Minimum Reset = 1 (deg)
○
Maximum Reset = 2 (deg)
○
Reset Increment Coarse Gain = 5
○
Reset Increment Fine Gain = 0
NOTE
Adjust if required.
8
Bias for reset of CHWS temperature setpoint for warmer temperatures
are off at this time.
9
Reset Output
is setup for the actual setpoint range of the desired chilled water supply temperature. Use the
default range of 42 degrees to 52 degrees as a start, or fine tune to your system requirements.
10
Select
NO
for the
Current Setpoint Input
>
Use the chilled water supply temperature (CURR STPT IN) as the
optimizer starting setpoint?
.
Chilled water optimizer reset - Start-up
After you have completed the check out and verification of both the
General Conditions & Status
and the
Chilled
Water Temperature Optimizer Reset
, enable the optimizer.
To Start & Run the Optimizer
General Conditions & Status
>
Section 1 - Optimizer – Primary Enable Conditions
(page 60)
1
All the enable conditions must be
On
.
2
Set the
Main ON Switch
to
ENABLED
.
NOTE
This switch ONLY enables the program, but not the individual reset functions. Continue below to
enable the chilled water reset function.
