On Friday, 11 January 2019 22:35:12 UTC, Tim+ wrote:
wrote:


I thought the advice was to heat DHW to 60 degrees to avoid the risk of
legionella, and that's not going to happen if the boiler's running at a
lower temp.


That may be true, but in practice I dont think Legionella has ever proved
to be a problem in domestic systems.


Oh yes it has. Plenty of people have died.
https://www.dailymail.co.uk/news/art...ish-homes.html