Yes/No. The biggest issue is flow rate. There is a little magnetic flow sensor. it used to come on at about .5gpm, but they recently changed that to 1gpm. If there is not enough flow it does not go into "high" mode.
What they have told us, is that on single lever faucets too much cold is getting mixed in, which lowers the flow of hot. So if you can choke down the cold supply on the riser below the fixture you're talking about you will increase the amount of hot flow for better balance.
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