Sorry for the daft question but I'm a bit lost and need some advice.
Recently moved into a house and it has a Powermax 155x boiler. My understanding is that this is a combi boiler and I have had the water on continuos for the last 3 weeks. Looking now it appears I've had the stoarge tank heated for the last 3 weeks. I really only want the instant water part on all the time. Is their any way to do this without heating the tank?