i have had a Vaillant condensing eco tec plus 418 installed 2 days ago.
when i pull down the bottom lid,there is a knob to turn it up(-or+),and it will only go to 65C.
I live in a 2 bedroom bungalow unattached.
Had the water on for 1 hour,and the water is not very warm at all.it is an open...