We are working with (2) 48 year old Worthington chillers that I am trying to find any type of kw/ton or COP rating. Not sure if they even did NPLV back then.

Does anyone have a way of finding or recommending part load performance on these?

Model Serial Capacity (tons)
HJU100281-U 70K65B015 366
HJU100251-U 70K65H109 333