On Fri, 04 Apr 2008 18:44:25 +0100 someone who may be Richard Skeen wrote this:-
In a hard water area one with external plate heat exchangers (often called a heat bank rather then a thermal store) is advisable. That pushes up the cost, but does mean that the store itself does not get scaled up and the heat exchangers can be cleaned/replaced.
In a soft water area Navitron do basic thermal stores for less than half your quote.
Unfortunately I've reached the point of the tank starting to bend. Plusgas (well, different brand but still penetrating/dismantling spray) didn't help. The bend in the tank has now developed into a slight weep after my latest attempts too.
Good suggestion. I wish I'd tried that before I bent the tank. I'm tempted to use Copaslip on the threads of the replacement although I supposed PTFE tape might help with future dismantling.
Rich.
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