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condensing dhw

On a mod-con boiler with indirect dhw is there any worthwile efficiency to be gained by setting the temps to condense on dhw production?
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Comments
Albert Einstein
trainer for Caleffi NA
The magic is in hydronics, and hydronics is in me
This gets me to thinking......if it's recovering slower and at a lower temp, then is the DHW priority providing any benefit? I'm assuming that the boiler would not be running at 100% on a DHW call with the lower temp settings.
Albert Einstein
Looks like condensate is flowing during the whole run now. Ran the shower for 30+ minutes and temp held steady so recovery seems reasonable. Boiler supply 140, boiler return 110 - 130. Modulation starts off at around 80% and ramps down slowly to low fire to finish off the last few minutes of the cycle.