Unvented system hot water

[evegar74]

Hi, new to this and am looking for someone to give me a little help understanding my new central heating system, as I'm only used to the simple workings of a combi. I've recently moved into a new build property which has a unvented system boiler with hot water cylinder in the bathroom airing cupboard. Since I've been in I regularly here the boiler firing every 10 minutes for 3/4 minutes at a time even though the hot water timer is off. Speaking to someone on site they tell me that the boiler fires to keep constant temperature of the hot water in the cylinder. Is this the correct/most efficient way to run it? As my plan was heat the water when the central heating was on thus killing 2 birds with one stone. If this is the case when I'm away from home for any length of time how do I stop the boiler heating the cylinder if the timer seems to be doing nothing?
Thanks in advance

 

[Dotty]

You've something wrong, you need to call a pro in.

Whereabouts are you, one of us may be nearby.

 

[evegar74]

Thanks croppie... I've only been in the house 2 week and estate still being built so everything is still under warranty etc. Just wanted some professional feedback before I highlight it with the site manager.... don't want to be fobbed off or look a fool before I ask!