On Fri, 2 Jan 2004 13:07:20 -0000, "Christian McArdle"
wrote:

One final tip. Loosen (but don't remove!) the old immersion heater
*before* you drain the cylinder.

Yes, and be aware that failure is quite common. You should have a
contingency plan to replace the cylinder. If you could benefit from a
different system, such as a heat bank etc. then consider this now, so you
don't just replace like with like in a panic when an upgrade could be
beneficial.


Yep. Last one I had a hand in taking out, when it finally shifted the
thread insert in the cylinder cracked, and the replacement wouldn't
seal.

--
Niall