Leaking Pipe - need to drain water.(GCH pipe) need some advice.
"Qatar Airlines Passanger" wrote in message
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"Sparks" wrote in message
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"Joe Bloggs" wrote in message
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"Joe Bloggs" wrote in message
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It's seems I have a leaking pipe somewhere,
There are two main types of heating systems, sealed and vendted.
In a vented system, there is a small water tank, usually in the loft
(This will be higher than the highest radiator and higher than the hot
water cylinder) - this keeps central heating system topped up
automatically.
If you have one of these, you need to stop it from filling, otherwise, no
matter how much water you drain off, it will just keep filling :-)
There is definately a tank in the loft so its vented, I stopped it filling
buy turning the cold water off at the stopcock, but this means no
cold wather either but I can turn it on breifly and get some without any
leakage
apparent in the wall, maybe I woulus be better off doing it in the loft
but
its small and crammped up there.
Yes, if you just tie the ball cock up, so it can't drop and fill the tank,
this will be fine (assuming there isnt a stopcock just before the ball
ock) - You may need to bang a nail into a joist above to secure the
string/rope, or simply lay a piece of wood over the top of the tank and tie
it to this.
I has assumed it was set to off). Would that be a problem if the boiler
had fired
up with out any water in the pipe I assume I had probably drained?).
It can cuase daname if the boiler is dry, however there should be a
safety lock out, that trips if the boiler gets to hot - if it was only on
for a very short time, I am sure it will be fine.
(When you drained the system, I expect you didn't actually drain the
water in the boiler anyway)
But I think its the same pipe which goes through the radiators?
The hot watertaps are drained too but thats less of a prob.
I guess the worst thast I could do is that I melted that pipe but that
must
be unlikely as pots and pans dont melt on the stove do they?!
The pipe will simply connect to the heat exchanger (usually cast iron) so
you should be fine.
Thanks I need to lift some floorboards now, I am not sure if I have
a too suitable for raising then up but I maybe I can find something
other wise I will have to go to homebase of B&Q.
The last time I had to lift some boards, I used a large flathead screwdriver
and a hammer :-)
The problem arises when you have a board that goes under somthing - then you
need to cut the board in the middle of a joist. (The nails holding the board
down should mark the middle of the joist)
I expect that bards were lifted to install the heating, so hopfully you can
spot these and lift them.
I usually screw the boards back afterwards instead of nailing them - makes
removal later easier and makes it less likley you will damage the boards
when trying to get them back up.
Sparks...
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