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2 Chiller - redundancy

Question asked by chiefns830 on Aug 12, 2019
Latest reply on Sep 9, 2019 by fourseng

I have two, large commercial chillers.  One will operate at any given time.  The designer is attempting to use an ATS to switch between which chiller will operate.  I'm told that there will be a "remote switch" inside the building that will activate the ATS to switch over to the other chiller.


I'm asking if this is a listing violation.  An ATS is designed to switch between two power sources and one load.  I don't believe it is listed to switch between two loads, from one power source.


Q1 - Do you agree that what I'm attempting to describe is a problem?

Q2 - Wouldn't they require a 3-pole, double-throw switch for this purpose?


Any comments would be appreciated.