Apologies if this is posted elsewhere - I had a search and read //wiki.diynot.com/plumbing but could not find the answer.
My heating system has been working fine. All the radiators hot. The other day I took one radiator off to decorate a room. Then put it back, opened up the valves, and warm water ran into it (heating was on at the time). I then bled the radiator until water began to peep out the valve. Then, after about 10 minutes, I noticed all the radiators went cool, and then I heard a noice coming from the boiler.
I have an unusual heating system. I have a cold water tank, a hot water tank, a boiler, a pump, and little red bowler-hat sized valve thingy with a pressure valve on it. Last time I had a problem with the boiler the plumber said to make sure the pressure valve sits between 500 - 1000 units.
Overall view of boiler :
Bowler-hat sized unit showing pressure valve :
Well, when I heard the noise, I looked at the valve and it read 0! So I tweaked the valve on the pipe that feeds the little bowler sized unit until the line on the valve started to climb. At around 1000 I turned it off, and there it has remained. The noise stopped. And the heating came on. But then, after a few minutes, it went off again and has not come back on since!
So, what I am hoping to learn is what is the problem likely to be so that when I ring the plumbers up I sound like I have at least some idea as to what the problem is.
Thanks a lot
Ted[/url]
[/img]
My heating system has been working fine. All the radiators hot. The other day I took one radiator off to decorate a room. Then put it back, opened up the valves, and warm water ran into it (heating was on at the time). I then bled the radiator until water began to peep out the valve. Then, after about 10 minutes, I noticed all the radiators went cool, and then I heard a noice coming from the boiler.
I have an unusual heating system. I have a cold water tank, a hot water tank, a boiler, a pump, and little red bowler-hat sized valve thingy with a pressure valve on it. Last time I had a problem with the boiler the plumber said to make sure the pressure valve sits between 500 - 1000 units.
Overall view of boiler :
![boiler1.jpg](http://www.f3.org.uk/temp_graphics/boiler1.jpg)
Bowler-hat sized unit showing pressure valve :
![boiler2.jpg](http://www.f3.org.uk/temp_graphics/boiler2.jpg)
Well, when I heard the noise, I looked at the valve and it read 0! So I tweaked the valve on the pipe that feeds the little bowler sized unit until the line on the valve started to climb. At around 1000 I turned it off, and there it has remained. The noise stopped. And the heating came on. But then, after a few minutes, it went off again and has not come back on since!
So, what I am hoping to learn is what is the problem likely to be so that when I ring the plumbers up I sound like I have at least some idea as to what the problem is.
Thanks a lot
Ted[/url]
[/img]