DIYbanter - View Single Post

On Thu, 1 Jan 2004 18:36:24 +0000,
wrote:

I need to fix a failed immersion heater in my hot water cylinder;
which seems in principle straightforward enough. The problem
is there seems to be no way of draining water out of the cylinder
without removing one of the elements! There are two heaters,
both side mounted one about a third of the way down, the other
at the bottom.

There is a "bolt" just below the top element, which might be where
a drain tap of similar should have been fitted, but I don't actually
know what it's for (if anything).

The hot water is drawn from the top of the cylinder, cold goes
in at the bottom; so shutting the inflow and opening the hot
taps has minimal effect on the amount of water in the cylinder.

Shut off the cold supply and open a tank fed cold tap below the level
of the cylinder if you have one.
Otherwise disconnect one of the top connections after draining as far
as possible, then insert a length of hose and syphon.

--
Niall