Worcester 2000 Combi & Telford Tempest Unvented Cylinder

This is a system I designed and installed. Previously a Combi was in the airing cupboard below. Everything has now been moved to the loft. I have a Combi because the Cylinder has only just gone in, also will be having a Solar system installed. I can choose between Combi or Unvented Cylinder. In the video I showed the safety devices, I meant to explain that in a fault, if it is flowing fast, it generally is overheat related, if trickling, it is pressure or expansion related. New to putting up Videos so bare with me. An unvented cylinder gives better flow rates, and of course it can be heated by Solar, ideal to combat the Energy Crisis. . .