100-w

I have a 2017 Viessmann Vitodens 100-W condensing gas boiler connected to a radiant floor heating manifold. No external pump. 120m2 floor area. Recently had the annual service. Boiler has been on for about a week now heating the underfloor heating cement slab. It is my impression that the...

Hello all! I've just got a new Combi boiler installed and would like to clarify two things (I have heating off atm and DHW set to 50ºC (which is default). - While using hot tap water, display shows it goes to around 64ºC. Shouldn't it be around 50 as per setting? - In DHW, does it matter if...