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  1. tscna88

    Chilled water system

    I have a building that I am getting ready to troubleshoot some issues. I have a Chiller with one loop pump and 2 Air Handler s with 3-way control valves. The pump is a constant speed pump and the piping loop from the chiller to the pumps is relatively short (80-100 feet of 4" total). The...
  2. tscna88

    Chilled water and heating piping

    Hi all, I have two separate systems one heating and one chilled water both are primary-secondary loop systems with VFD guided pumps on the secondary. Both have Differential pressure switches on the end of the loops controlling the speed of the pumps. I have no original engineering data on...

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