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

Chilled water system optimizer v2

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Table Of Contents

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Table of Contents

Reset Gain

Reset Gain and the Minimum and Maximum Reset Increments are interdependent and you might need to adjust

both more than once. The reset gain determines the reset increment and the chilled water supply temperature.

After the program has been running a while and if each increment is often at either the minimum or maximum,

then you can adjust the Reset Gain.

Each reset increment should fall between the minimum and maximum limits

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The reset increment frequently increases over a response period, which is normal

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If most often at the Minimum Reset Increment, then raise the reset gain

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If most often at the Maximum Reset Increment, then lower the reset gain

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Optional - Bias for warmer Chilled Water Supply Temperatures

After the program has been running a while, the chilled water temperature could be running cooler than expected.

This could be any one of the following reasons:



It is the best temperature for optimum energy use



The system power, flows, or tonnage inputs are turbulent and fluctuate irregularly



There is a piping or design issue



The program calculations could be misconfigured

NOTE Smoothing can help address the problem caused by turbulence or fluctuations in measurements.

If you are concerned about cooler temperatures:



Add smoothing and give a bias toward warmer supply temperatures and energy savings at the chiller(s) by

turning each Bias switch to On.



Fine tune the Bias, for lower energy savings at the chiller versus lower "system wide" energy savings.