The boiler I'm planning to get is a Vaillant ecoTEC system boiler, in
order for it to be in condensing mode most of the time I'm oversizing
radiators a little and using a quick recovery cylinder.
Will this make a difference?
One of my relatives has a Vaillant ecoMAX system boiler and on the
inside of the control flap it advises to set the boiler flow temp to
maximum if it is connected to a thermostat, I thought condensing
boilers should be set as low as possible.
Shall I tell him to ignore this advise?