hi, wish i had left the rad on now! I bled the radiators, topped up pressure again, but it still drops after a while? The rad i removed, the valves are fine, no leaks,
jeanette
jeanette
Help - removed radiator from combi system
- Thread starter jeanette63
- Start date
If the pressure's dropping there must be a leak somewhere, but it's obviously not from the radiator you removed or the valves would be dripping.
My guess is that there's a leak somewhere else and you didn't notice it until you started watching the pressure gauge. I don't think you've caused it by removing the rad.
If you leave it be, how far does the pressure drop - does it drop all the way to zero or stop at some point? Does it stay stable if the heating is left turned off? We'll be able to find out what's wrong if we approach this logically.
There should be a copper pipe (pressure relief pipe) that goes from the boiler and ends outside. Lots of people call this the 'overflow' pipe... are there any drips from there?
D
dextrous
Although nothing may be coming out of the valves themselves, have you checked the pipes that feed into them - sometimes undoing a radiator can disturb the seals and water may drip down the back of the pipe and through the hole in the floor, which you can't always see, but can feel or check with a bit of dry loo roll.
i checked the old radiator pipes, dried them and really no leaks, unless something under the floor! But i was careful taking it off, used to spanners the pipe wasnt disturbed.
But every time i top up the pressure in an hour or so it drops again, can i still use the heating, its not hot in here!
I know i do need to get to the bottom of this though
But every time i top up the pressure in an hour or so it drops again, can i still use the heating, its not hot in here!
I know i do need to get to the bottom of this though
i was told to turn the taps on until it reaches 1 bar cold, then i switch them back off and put on the heating again, it doesnt go up further, just gradually drops down to zero over time.
In that case there is a leak somewhere. It will be quite a bit of water if the gauge is going down that quickly - not just damp, and not bucketfuls, somewhere in between. A fair puddle.
You shouldn't use the heating while this is going on.
If you have pipes buried in a concrete floor these can leak without being noticed.
Also check the pressure relief pipe ('overflow') outside.
See if you can follow the pipes and find any wet patches. Have a particularly good look under the boiler.
Or if you can afford it and don't want the hassle of diy, call a plumber in.
You shouldn't use the heating while this is going on.
If you have pipes buried in a concrete floor these can leak without being noticed.
Also check the pressure relief pipe ('overflow') outside.
See if you can follow the pipes and find any wet patches. Have a particularly good look under the boiler.
Or if you can afford it and don't want the hassle of diy, call a plumber in.
can i use my gas fire meantime, if i have to turn off the heating?
D
dextrous
Yes
D
dextrous
If it is a leak, then it's worth trying to locate it if you can since a plumber will charge you for the time he spends trying to find it.
i dont know if it means anything but i used the taps to try again, it sat at one, then fell a 1/4 bar quite quickly, but when i ran the hot water it rose to 1 bar again. i will prob get a plumber out tomorrow!
hi i was wrong about the radiator valve the one on the right with the valve inside i turned off, hissed a bit when i checked it again, and it is leaking, seems a bit loose - do i tighten the bolt under it?
D
dextrous
Yep - but don't overtighten it, about a quarter to a half turn should do it. If you have two spanners, use one of them to hold the body of the valve to stop it turning while you tighten up the nut underneath.
Is the leak coming from the joint between pipe and valve - tighten it as described above.
Is the leak coming from a valve with numbers, flowing from the radiator connection, buy a blanking nut from a diy shop.
Any questions just ask!
dont want to make any more mistakes, its def clockwise to tighten, the body part above seems quite loose
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