combi boiler conversion

https://wiki-fusion.win/index.php/What_to_Know_Before_Starting_a_Central_Heating_Installation

We converted our old combi boiler to a system boiler last spring, and the difference in hot water delivery is night and day. Instead of juggling heating and water demands from a single unit, we now have a dedicated tank that keeps water hot and ready. The boiler still handles the central heating, but without the constant cycling to maintain a small pre-heat. It freed up space and simplified maintenance, though the install took a full two days and required some pipe rerouting.