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  1. RustyPipez

    Closed Loop Chilled Water flow issues

    Sorry I haven't replied to any of your follow-up questions. I've been offsite for a few days. I have some additional info, and if you think it's irrelevant, I'll go back and answer all the follow-ups. I checked into it a little more today, and I find a Bermad Model 730 valve in the bypass loop...
  2. RustyPipez

    Closed Loop Chilled Water flow issues

    Thanks for the replies. Hopefully, I have the answers to your questions. I also uploaded a quick drawing of the system. I have more FCUs than shown, but you’ll get the idea. The FCUs all have 2-way valves controlled by local controls/sensors, with setpoints under my control. The flow is...
  3. RustyPipez

    Closed Loop Chilled Water flow issues

    Hi all. I have a glycol system that includes 3 air-cooled chillers with 3 pumps on a loop. The pumps are controlled by VFD's controlling pump speed using differential pressure. Off the loop are various fan coil units. I run minimum one chiller and one pump around the clock, adding chillers and...

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