Hi All,

I have an interesting problem that has just started with my CH system. I'll
explain what I know about the system.

In the airing cupboard I have a copper tank which I assume feeds the system.
Beneaf this there is a big insulated tank. The only pipe linking these two
is an overflow from the insulated tank which enters at the top. The copper
tank has a cold water feed operated with a ball cock, again at the top. At
abou the same height there is an overflow pipe. There is also another pipe
which exits the tank at the bottow and leads to somewhere else.

I have a boiler in the kitchen (ideal elan 2) which has two pipe
enterting/exiting the top of the boiler. I assume that the pipe leading off
from the copper tank goes to the boiler but I may be wrong with this.

The problem I am experienceing is that the copper tank is filling and
overflowing. My initial thought was that the ball cock was faulty. I
replaced this but the problem has persisted, the ball cock is not at fault.
The water seems to enter the copper tank through the bottom pipe, and the
water is a dirty sandy color.

Has anyone any idea what could be causing this to happen. Has anyone got a
electronic copy of a manual or schematic for the boiler or CH diagrams that
I can use to try trouble shoot the problem.

Many thanks

Barry.