Condenser Water Optimizer Reset - Start-Up - Carrier OPN-OPT-OL Installation And Startup Manual

Set Minimum and Maximum Reset Increments & Program Reset Gains:, starting with:
7
Minimum Reset = 1 (deg)
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Maximum Reset = 2 (deg)
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Reset Increment Gain = 5
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Reset Increment Fine Gain = 0
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NOTE You may need to change these later.
Ensure your Bias for reset of CWS temperature setpoint for cooler temperatures are off at this time. You can
8
always turn them on later.
Section 3 - Condenser Water Setpoint Reset – Output & Limit Settings (page 83)
Configure the Condenser Water Supply Setpoint Range – Based on OA Wet Bulb Temperature, starting with:
1
Maximum: Wet Bulb Approach: 11 degrees — Setpoint at lowest reset (warmest condenser water
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temperature) when the tower fans run the slowest.
Resting: Wet Bulb Approach: 8 degrees — Setpoint when the optimizer is off.
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Minimum Wet Bulb Approach: 5 degrees — Setpoint at highest reset (coolest condenser water
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temperature) when the tower fans are running faster.
NOTE You may need to change these later.

Configure the Condenser Water Supply Temperature – High Limits appropriate for your chiller. You may need
to adjust the defaults .

Configure the Condenser Water Supply Temperature – Low Limits appropriate for your chiller. You may need
to adjust the defaults .

Condenser water optimizer reset - Start-up

After you have completed the check out and verification of both General Conditions and Status and Condenser
Water Temperature Optimizer Reset, enable the optimizer.
To start and run the Chilled Water System Optimizer
General Conditions & Status > Section 1 - Optimizer – Primary Enable Conditions (page 60)

All the enable conditions must be On.

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 condenser water reset function.
Chilled Water System Optimizer v2
Installation and Start-up Guide 41
Start-up and Commissioning
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