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It sounds like you are really looking to confirm that you are meeting the IPLV requirement in addition to the full load kW/ton. IPLV has more to do with the shape of the chiller curve since it deals with the efficiency of the chiller as it unloads. You could get the IPLV via several different combinations of part load chiller efficiencies since it is a weighted average. As far as I know there isn't a way to plug in an IPLV and get a chiller curve. The only way I can think of is to find a chiller that has that IPLV and full load kW/ton. Then use it's curve. When modeling the baseline, I typically just use one of the default curves based on chiller type and input the full load kW/ton, which just offsets the curve so the full load efficiency matches.