Skandhaless
Striker
Ah right . It's a new ideal and it's set just above "eco", fitter said to do that as eco is a bit low and can lead to bacteria.You mean TRV - settings on each rad? Those are just "limiters" for each room.
I'm talking about the setting on the boiler itself.
Rads are basically on or off. You're right that the TRV settings are basically individual thermostats.
As you can tell I know next to fuck all about plumbing and heating