The storage cylinder I have is unvented, and I believe it to be of steel construction.
There is no external cladding on it to retain heat, is this normal, as I imagined it would be the same as a conventional immersion tank.
I would welcome you comment
A Platt
Thanks for your comment.
The only information I have about the cylinder is in the instruction manual I have now got hold of - Potterton Performer - Model 125-200.
It does show a shaded internal casing, perhaps indicating some sort of thermal barrier, why don't the manufacturers show this type of info more clearly.
Thanks again.
A P
A Platt
November 2009
You don't mention the make - I was looking at a brochure for some of these only yesterday - Stainless Steel super duper jobs - Range Tribune. The brochure shows a relatively narrow inner cylinder of Stainless Steel covered with an insulation coating and a painted mild steel outer cover. I'm pretty sure you have insulation on yours... A manufacturer would not get many sales of uninsulated cylinders in the current energy saving climate.
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