what is a indirect pumped cylinder

Postby peter8899 » Mon Sep 14, 2009 1:27 pm

i have been told i need a indirect pumped cylinder for the hot water.but on looking for one i can not find any refrence to pumped or non pumped cylinders, just direct and indirect.so can someone explain whether all indirect cylinders are by default pumped or what??
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Simply Build It

Postby plumbbob » Mon Sep 14, 2009 4:54 pm

The difference between fully pumped and gravity tanks is the internal heating coils are different diameters. Gravity coils were 28mm (1") now I think all tanks are 22mm which is ideal for fully pumped although 28mm can be used - you just need different couplings.
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